Calendar mechanism and timepiece including such mechanism.

专利摘要:
The invention relates to a calendar mechanism of a simple design for minimizing friction, as well as a timepiece including such a mechanism. In this timepiece timing mechanism, an operating lever (70) includes a cam follower portion (75) for detecting any short month. It is supported so as to be tilting on a timepiece support base plate. A date finger (33) is able to cause a date advancement by engaging with the teeth (47) of a date indicator (40). The operating lever (70) supports it so that the center of rotation (B) of the date finger is moved by means of a tilting of the operating lever (70). The calendar mechanism further includes a cam (66) that the cam follower portion (75) of the operation lever (70) tracks to detect any short period of time so as to change the position of the operating lever ( 70) so that the date finger (33) causes an additional date advance equal to one day between the last day of the short month and the first day of a long month.
公开号:CH705901B1
申请号:CH02785/12
申请日:2012-12-13
公开日:2017-06-15
发明作者:Mori Yiuchi；Watanabe Mamoru
申请人:Seiko Instr Inc；
IPC主号:

专利说明:

Field of the Invention [0001] The present invention relates to a calendar mechanism and a timepiece including the calendar mechanism. 2. Description of the Prior Art [0002] As a technology in the form of a mechanism called an automatic calendar mechanism, in which a long month (a 31-day month) and a short month (a 30-day month) or less) are differentiated, and a month advance is made, as a calendar mechanism, various technologies are known.
In an automatic calendar mechanism, various mechanisms have been proposed for additional date advancement in which an extra day is added to advance the two-day date in the interval between the last day (30) of a short month except February, and the first day of a long month. To achieve this additional date advancement between the last day of a short month and the first day of a long month, it is even known to move the position of a date finger engagement part (Japanese Patent No. 2,651,150 (Patent Document 1)).
[0004] However, in the calendar mechanism of the patent reference 1, in general (in days other than the last day of the short month), an elastic arm portion of the date finger is deformed by forcing it so that only one To be advanced in a day, a structurally common load (load related to the rotation of a wheel train) is easily increased, and a loss of energy is easily increased.
In addition, to obtain the additional advancement of date between the last day of a short month and the first day of a month long, a rotation mechanism of a date indicator being further provided the finger of The date has been suggested in various ways (for example, JP-A-2005-326,420 (patent document 2) and JP-A-2009-128,119 (patent document 3)).
However, for example, in the calendar mechanism of patent document 2, since a planetary gear mechanism, in which the number of teeth is defined, is used to obtain a predetermined operation, it is difficult to avoid an important complication of the structure. In addition, for example, in the calendar mechanism of patent document 3, to turn the date indicator into the desired increase, it is necessary to provide a lever advancing on the last day of the short month which is operated by a cam of month. SUMMARY OF THE INVENTION [0007] The present invention is made with regard to the problems described above, and an object of this invention is to provide a calendar mechanism having a new structure capable of avoiding excessive friction load while avoiding excessive complication of the structure, and a timepiece including the calendar mechanism.
[0008] To achieve this purpose, a calendar mechanism according to the present invention includes: a date indicator; operating lever means which includes a cam follower portion for detecting a short month and which is pivotally supported on a timepiece support base plate; a date finger which is able to cause a date advancement by engaging with the teeth of the date indicator and that supports the operating lever means so that the center of rotation of the date finger is moved by means of a tilting operation lever means; and a month cam that the cam follower portion of the operation lever means tracks to detect the short month so as to change the operating lever means so that the date finger causes further advancement of date equal to one day between the last day of the short month and the first day of a long month.
In the calendar mechanism of the present invention, since there are provided operating lever means which include a cam follower portion for detecting the short month and which are supported so as to be tilting on the base plate of the timepiece holder and the month cam which is engaged with the cam follower portion of the operating lever structure to detect the short month to change the position of the operating lever means between the last day of the short month and the first day of the month long, the position of the operating lever means can be changed under the commitment of the month cam between the last day of the short month and the first day of the long month. In addition, in the timing mechanism of the present invention, since the date finger is provided which carries the date advancement by engaging with the date indicator teeth and which is supported on the lever structure of operation for the center of rotation of the date finger to be moved by tilting the operating lever means, if the position of the operating lever means is changed between the last day of the short month and the first day of the long month, according to this, the rotation center of the date finger which is supported on the operating lever means is moved, the date finger can perform the additional date advancement equal to one day between the last day of the month short and the first day of the month long. That is, in the calendar mechanism of the present invention, the additional date advancement can be made by changing the position of the center of rotation of the date finger between the last day of the short month and the first day. of the month long. In this way, since not only an excessively complicated mechanism like a planetary gear mechanism is not required for the additional date advancement but also the rotation center itself of the date finger is moved, it is not no need to elastically deform the date finger, and therefore, excessive friction load can be avoided.
In a calendar mechanism according to a possible embodiment of the invention, a date indicator driving wheel is rotatably supported on the timepiece support base plate, and the center of rotation. the date finger is supported by the operating lever means so as to be movable by tilting relative to the center of rotation of the date indicator driving wheel.
In this case, only the center of rotation of the date finger can be changed without affecting engagement between the gear (typically, a 24 hour gear such as a date indicator gear) of the date indicator driving wheel and the gear (typically, for example, a cylindrical gear) of the manual control wheel train of the timepiece. However, if desired, when the center of rotation of the date finger is moved, the center of rotation of the date indicator driving wheel is moved to a position where the center of rotation of the date finger coincides with the center of the date finger. rotation of the leading date indicator wheel, and the center of rotation of the date finger can be moved.
In a calendar mechanism according to a possible embodiment of the invention, (1) at the short month level, the month cam has a concave portion for the cam follower portion, or (2) at the of the short month, the month cam has a convex portion protruding for the cam follower portion.
In addition, in a calendar mechanism according to a possible embodiment of the invention, (1) the month cam can be evenly divided into 12, or (2) the month cam can be divided by equally in 24.
In addition, the month cam may be divided evenly into 36 or more by providing that the number is a multiple of 12.
For example, in the case where the month cam is evenly divided into 24, typically, not the entire short month, compared to the second half of each short month or the first half and the second half of the long month. the second half of each month runs (the last day of the month) is formed of the concave portion for the cam follower portion or the convex portion protruding for the cam follower portion. In this case, the month detection portion runs operating lever means also serves as a detection portion of the last day of the month.
On the other hand, when the month cam is equally divided at 12, the operation lever means includes the portion for detecting the last day of the month in addition to the short month detection portion, and the date indicator includes a groove portion of the last day of the month. In this case, the part for detecting the last day of the month of the operating lever is inserted in the groove portion of the last day of the month of the date indicator in the last day of the short month, and the position of the center of rotation of a date finger is changed.
In a calendar mechanism according to a possible embodiment of the invention, between the last day of the short month and the first day of the long month, (1) the operation lever means and the month cam may be configured for the date finger to cause a normal date advance of the date indicator then the additional date advance of that date indicator, or (2) the operation lever means and the month cam can be configured for the date finger to cause the date indicator's additional date advancement then a normal date progress of that date indicator.
According to the configuration, the arrangement of the operating lever means is changed.
In a calendar mechanism according to a possible embodiment of the invention, the operating lever means consist of a single rigid lever or have the constitution of a link mechanism which includes a plurality of levers rigid.
In addition, when the month cam is divided equally at 12 and that, at the month short, the month cam has the projecting convex portion, the operating lever means have the constitution of the mechanism link that includes the plurality of rigid levers. However, also in other cases, if desired, the operating lever means may have the constitution of the link mechanism that includes the plurality of rigid levers.
To achieve the object, typically, a timepiece of the present invention includes the configuration described above.
Brief description of the drawings [0022]
Fig. 1 is an explanatory plan view showing the appearance when a timepiece of a preferred embodiment of the present invention, which includes a timing mechanism of a preferred embodiment of the present invention, is seen from in front of.
Fig. 2 is an explanatory plan view showing a state (approximately 22:44, August 30) where a month-long date advance begins in the timepiece of a first preferred embodiment of the present invention which includes a timing mechanism of a first preferred embodiment of the present invention.
Fig. 3 represents a cross-secant view of a part of the timepiece of FIG. 2, (a) is an explanatory cross-sectional view taken along the line NIA-NIA of FIG. 2, and (b) is an explanatory cross-sectional view taken along the line INB-INB of FIG. 2.
Fig. 4 is an explanatory plan view showing a state (approximately 0:00, Aug. 31) where the top of a jump jump clip portion of a date jumper presses against the top of a gear of a date indicator near the last day of the long month in the timepiece of the first embodiment.
Fig. 5 is an explanatory plan view showing a state (approximately 0:00, August 31) where the date advancement is completed immediately after the state of FIG. 4 near the last day of the long month in the timepiece of the first embodiment.
Fig. 6 is an explanatory plan view showing a state (approximately 22:44, August 31) where the last date advancement begins on the last day of the long month in the timepiece of the first embodiment.
Fig. Fig. 7 is an explanatory plan view showing a state (approximately 0:00, Sept. 1) where the top of the jump jumper clip portion of the date jumper presses against the top of the gear of the date indicator. and the top of the jump restriction clip portion of a month jumper presses against the top of the star gear one month to the last day of the long month in the timepiece of the first embodiment.
Fig. 8 is an explanatory plan view showing a state (approximately 0:00, September 1) where the date advancement and month advancement are completed immediately after the state of FIG. 7 at the last day of the long month in the timepiece of the first embodiment.
Fig. 9 is an explanatory plan view showing a state (approximately 22:47, September 30th) where the month-month short date advance begins almost (between the last day of the short month and the first day of the long month) the last day of the month in the timepiece of the first embodiment.
Fig. 10 is an explanatory plan view showing a state (approximately 0:05, Oct. 1) where the top of the date jump jumper clamp portion presses against the top of the date indicator gear near the last day of the short month in the timepiece of the first embodiment.
Fig. 11 is an explanatory plan view showing a state (approximately 0:05, October 1) where the date advancement is completed immediately after the state of FIG. 10 near the last day of the short month in the timepiece of the first embodiment.
Fig. 12 is an explanatory plan view representing a state (approximately 2:04, October 30) where an additional date advance begins after the normal date advancement from the short month to the last day of the month (between the last day of the short month) and the first day of the long month) in the timepiece of the first embodiment.
Fig. 13 is an explanatory plan view showing a state (approximately 3:18, Oct. 1) where the top of the jump jumper clip portion of the date jumper presses against the top of the date indicator gear and the top of the month jumper jump restriction clip portion presses against the top of the star gear of the months at the last day of the short month in the timepiece of the first embodiment.
Fig. 14 is an explanatory plan view showing a state (approximately 3:18, October 1) where the date advancement and month advancement are completed immediately after the state of FIG. 13 at the last day of the month runs in the timepiece of the first embodiment.
Fig. 15 is an explanatory plan view showing a state (approximately 22:44, August 31) where the date advance of the long month begins in a timepiece of a second preferred embodiment of the present invention which includes a timing mechanism of a second preferred embodiment of the present invention.
Fig. 16 is an explanatory plan view showing a state (approximately 0:00, Sept. 1) where the date advancement and month advancement of the long month are completed in the timepiece of the second embodiment.
Fig. 17 is an explanatory plan view showing a state (approximately 22:47, September 29th) where the date advance of the short month begins in the timepiece of the second embodiment.
Fig. 18 is an explanatory plan view showing a state (approximately 0:05, September 30th) where the date advance of the short month is completed in the timepiece of the second embodiment.
Fig. 19 is an explanatory plan view representing a state (approximately 20:41, September 30) where a first date advancement begins as an additional date advance that is performed earlier than usual on the last day of the month runs in the room watchmaking apparatus of the second embodiment.
Fig. 20 is an explanatory plan view showing a state (approximately 21:36, September 30) where the first date advancement is completed in the last day of the short month in the timepiece of the second embodiment.
Fig. 21 is an explanatory plan view showing a state (approximately 22:34, September 30) where a second date advancement begins as a normal date advancement in the last day of the short month in the timepiece of the second mode of production.
Fig. 22 is an explanatory plan view representing a state (approximately 23:39, September 30) where the second date advancement and month advancement are completed in the last day of the short month in the timepiece of the second mode of realization.
Fig. 23 is an explanatory plan view showing a state (approximately 22:44, August 31) where the date advance of the long month begins in a timepiece of a third preferred embodiment of the present invention which includes a timing mechanism of a third preferred embodiment of the present invention.
Fig. 24 is an explanatory plan view showing a state (approximately 0:00, Sept. 1) where the date advancement and month advancement of the long month are completed in the timepiece of the third embodiment.
Fig. 25 is an explanatory plan view showing a state (approximately 22:47, September 29) where the date advance of the short month begins in the timepiece of the third embodiment.
Fig. 26 is an explanatory plan view showing a state (approximately 0:00, September 30) where the date advance of the short month is completed in the timepiece of the third embodiment.
Fig. 27 is an explanatory plan view representing a state (approximately 20:41, September 30) where a first date advancement begins as an additional date advance that is carried out earlier than usual in the last day of the month runs in the timepiece of the third embodiment.
Fig. 28 is an explanatory plan view showing a state (approximately 21:36, September 30) where the first date advancement is completed in the last day of the short month in the timepiece of the third embodiment.
Fig. 29 is an explanatory plan view showing a state (approximately 22:34, September 30) where a second date advancement begins as a normal date advancement in the last day of the short month in the timepiece of the third mode of production.
Fig. 30 is an explanatory plan view showing a state (approximately 23:39, September 30) where the second date advancement and month advancement are completed in the last day of the short month in the third mode timepiece of realization.
Fig. 31 is an explanatory plan view showing a state (approximately 22:44, August 30) where the date advance of the long month begins in a timepiece of a fourth preferred embodiment of the present invention which includes a timing mechanism of a fourth preferred embodiment of the present invention.
Fig. 32 is an explanatory plan view showing a state (approximately 22:44, August 31) where the date advance of the long month begins in a timepiece of a fifth preferred embodiment of the present invention which includes a timing mechanism of a fifth preferred embodiment of the present invention.
Fig. 33 is an explanatory plan view showing a state (approximately 0:00, Sept. 1) where the date advancement and month advancement of the long month are completed in the timepiece of the fifth embodiment.
Fig. 34 is an explanatory plan view showing a state (approximately 22:44, September 30) where a first date advancement begins as a normal date advancement in the last day of the month runs into the timepiece of the fifth mode of production.
Fig. 35 is an explanatory plan view showing a state (approximately 0:00, October 1) where the first date advancement is completed in the last day of the short month in the timepiece of the fifth embodiment.
Fig. 36 is an explanatory plan view showing a state (approximately 2:04, October 1) where a second date advancement begins as the additional date advancement in the last day of the short month (between the last day of the short month and the first day of the long month) in the timepiece of the fifth embodiment.
Fig. 37 is an explanatory plan view representing a state (approximately 3:18, October 1) where the second date advancement and month advancement are completed in the last day of the short month in the fifth mode timepiece of realization.
Fig. 38 is an explanatory plan view showing a state (approximately 22:44, August 30) where the date advance of the long month begins in a timepiece of a sixth preferred embodiment of the present invention which includes a timing mechanism of a sixth preferred embodiment of the present invention.
Fig. 39 is an explanatory plan view showing a state (approximately 22:44, August 30) where the date advance of the long month begins in a timepiece of a seventh preferred embodiment of the present invention which includes a timing mechanism of a seventh preferred embodiment of the present invention.
Fig. 40 is an explanatory plan view showing a state (approximately 22:44, August 30) where the date advance of the long month begins in a timepiece of an eighth preferred embodiment of the present invention which includes a timing mechanism of an eighth preferred embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0023] Some preferred embodiments of the present invention will be described based on the preferred embodiments shown in the accompanying drawings.
Embodiment [0024] In FIGS. 1 to 14, a timepiece, which includes an automatic calendar mechanism 1 such as a calendar mechanism of a preferred embodiment of the present invention, i.e., a timepiece 2 with a calendar mechanism, is illustrated.
The timepiece 2 with the calendar mechanism has an appearance 3 as shown in FIG. 1. That is, the timepiece 2 with the calendar mechanism has a time display hand 11 which includes an hour hand 11a, a minute hand 11b, and a hand second (second hand) 11c to be rotated clockwise C1 about a central axis line C. A dial 12 of the timepiece 2 includes a composition 12a which indicates a position on the time, and a day and a month display window 13 which includes a month display area 13a and a day display area 13b. A reference numeral 14 indicates a timepiece case and a reference numeral 15 indicates a crown which is mounted on a winding stem 15a.
In an example shown in the cross-secant views of (a) and (b) of FIG. 3, an hour wheel or a cylindrical wheel 16a in which the hour hand 11a is mounted on the tip, a minute wheel 16b in which the minute hand 11b is mounted on the tip, and a second wheel or a second wheel and pinion 16c in which the seconds hand 11c is mounted on the tip are rotatably supported about the central axis line C by a central tube 7b which is supported by a main plate 6 or a wheel bridge center 7a, and are rotated by a needle drive wheel train which includes other wheel sets connected to a driving source (pars shown) such as a barrel drum which mutually connects the gear portion of the cylindrical wheel 16a or a cylindrical gear, the minute wheel gear of the minute wheel 16b or a center wheel, and the gear part of the second wheel and pinion 16c or a second wheel and includes a gear wheel. main essence for timepiece.
As shown in FIGS. 2 and (a) of FIG. 3, a date indicator driving wheel 30, which is engaged with a cylindrical gear 17a of the cylindrical wheel 16a directly or via an intermediate date wheel by a date indicator gearing portion 31, is rotated around of the center line H in a direction H1 at a speed of one rotation / day. A date pin 32 is constructed in a portion which is separated in the radial direction from the center line H in the date indicator driving gear portion 31.
As defined from figs. 2 and (a) and (b) of FIG. 3, a date indicator 40 includes a plate shaped annular date display wheel portion 41 having a large diameter, a large diameter cylindrical portion 42a which extends to be parallel in the axis line direction. from the inner circumference of the date display wheel portion 41, a thick neck portion 42b having a small width extending in the direction of the inner side in the radial direction from the lower end of the cylindrical portion of large diameter 42a, a thick cylindrical portion 42c having a small diameter which extends to be parallel in the axis line direction from the inner circumference of the flange portion 42b, a date gear portion 45 which is formed on the inner circumferential wedge of the low end side of the thick cylindrical portion 42c having a small diameter, a portion of a month finger or a portion of a feed gear of 46 is formed on the inner circumferential corner of the large diameter cylindrical portion 42a, and a groove portion 48 of the last day of the month which is formed on the upper corner on the thick neck portion 42b. In addition, a part mentioned in (a) and (b) of FIG. 3 in the description, an "upper portion" means that the side on which the time display hand 11 is positioned unless otherwise indicated.
The letters LD which indicate 31 dates from 1 to 31 are displayed at regular intervals on a dial side surface 41a of the date display wheel portion 41. The date gear portion 45 includes 31 of the gear parts 47 at regular intervals. The rotation in a direction C2 of the date indicator 40 is set by a date jumper 22 which includes a date jump restriction clip portion 22a and a date jump restriction spring portion 22b. As defined by (a) and (b) of FIG. 3, the position aberration in the thickness direction of the date indicator 40 is set by a date indicator holding a plate 21 which is mounted on the main plate 6 to cover the date gear portion 45.
The month finger portion or the month 46 forward gear portion of the date indicator 40 rotates a month indicator 60 about the central axis line C in the C1 direction by a wheel month indicator driver or a transmission wheel of 50 months.
As defined by FIG. 2, the month indicator driving wheel 50 includes a gear 51 that is rotatable about a central axis line J, and when the teeth 52 of the gear 51 are engaged with the month finger portion or the the month 46 forward gear portion of the date indicator 40, the gear 51 is rotated in a direction J1 by a tooth portion through the gear portion 46. In this example, since the part of the month gear 46 includes a gear portion 46, the month gear wheel 50 is rotated in the J1 direction by a gear portion for one month.
As defined by the explanatory cross-cutting views as (a) and (b) of FIG. 3 and the explanatory plan view as FIG. 2, the month indicator or the month display wheel 60 includes a month display wheel guide tube 61 with which a cylindrical portion 16a1 of the cylindrical wheel 16a is loosely engaged and which is attached to the plate maintaining a date indicator 21, a star of the month or a month gear 64 which is rotatably inserted into the guide tube 61 by a hub portion 62 and wherein the gear parts 63 are provided on the outer circumference, a month cam 66 which is inserted into a star of the months 64 and wherein a cam surface 65 is formed on the outer circumference, and a month dial or part of a month display plate 67 which is attached to the gear of 64 months.
The cam surface 65 of the month cam 66 includes a long month cam surface portion 65a which has an arc-shaped cam surface portion having a large diameter or the shape of a convex portion. corresponding to a long month in which a month has 31 days and a short month cam surface portion 65b that has an arcuate cam surface having a small diameter or the shape of a concave portion corresponding to a month short in which one month has 30 days or less.
The month gear 64 is engaged with the month indicator driving wheel 50, is rotated by a tooth portion when the month indicator driving wheel 50 is rotated by a tooth portion for a month, and is rotated around the central axis line C in the direction C1 once a year.
The letters LM which indicate the months from January to December are displayed on a dial side surface 67a of the month display plate portion 67 one by one (12 in total) at regular intervals. As defined by (a) and (b) of FIG. 3, the month display plate portion 67 includes the outer circumferential wedge which has the diameter slightly smaller than the inner circumferential corner of the date display wheel portion 41 of the date indicator 40. Accordingly, , the letters LM which are positioned on the dial side surface 67a of the month display plate portion 67 and indicate the months are positioned at the side slightly closer to the central axis line C than the letters LD which are positioned on the dial side surface 41a of the date display wheel portion 41 and indicate dates, and the months and dates are displayed in the predetermined areas 13a and 13b in the day display window and month 13 of the dial 12 (Fig. 1).
The rotation in the C1 direction of the month indicator 60 is set by a month jumper 24 which includes a month jump restriction clip portion 24a and a 24b month jump restriction spring portion. As defined by (a) and (b) of FIG. 3, the position aberration in the thickness direction of the month indicator 60 is set by a month indicator bracket 23 which is mounted on the month display wheel guide tube 61 to adjust the moving the star of the months 64 to the side of the dial.
The automatic calendar mechanism 1 includes an operating lever 70 in addition to the month cam 66.
In the example shown in (b) of FIG. 3, the operating lever 70 is formed of a body formed of a flat plate 73 having a desired flat shape and is supported on the plate holding the date indicator 21 to rotate about the central axis line A in the directions A1 and A2 by a center of rotation axis 25. The center of rotation axis 25 is inserted into a hole 21a of the plate holding the date indicator 21 in the lower end having a small diameter, and is inserted to rotate relative to a hole 70a of the base portion of the operating lever 70 in the intermediate portion having a large diameter. Instead, even when the center of rotation axis 25 is inserted into the hole 70a of the operating lever 70 and is inserted to turn in the hole 21a of the plate holding the date indicator 21, the axis of center of rotation can be inserted to turn the hole 70a of the operating lever 70 and the plate hole 21a holding the date indicator 21, and can be supported to rotate around the central axis line A by d other stationary base plates such as the main plate or various positions in place of the plate holding the date indicator 21.
The operating lever 70, which has the shape of the body formed of a flat plate 73 which receives a prestressing force in the direction A1 through a spring receiving portion 72 by an operating lever spring 71, includes a date finger holder portion 74 in the tip side which is positioned in the opposite side to the base portion on which the hole 70a is positioned, and includes a short month detection protrusion 75 configuring a portion of the short month detection and protrusion 76 to detect the last day of the month configuring a detection portion the last day of the month in both sides.
[0040] An approximately circular central opening portion 73a and a long hole portion 73b are formed on the flat plate portion 73 of the operating lever 70, and the flat plate portion 73 is loosely engaged with the month cam 66 through the central opening portion 73a and is loosely engaged with a rotation pin portion 24c of the month jumper 24 through the long hole portion 73b. In this way, as defined in an explanatory plan view of FIG. 2, the rotation in the directions A1 and A2 of the operating lever 70 which spreads over a large area including the central axis line C of the timepiece is allowed.
In this example, a date finger structure 33 includes a date finger main body portion formed of a flat plate 35 including a date finger portion 34 and a rotational axis portion 36 which is constructed on the main date finger body portion 35, and is supported on the date finger supporting a portion 74 of the operating lever 70 to rotate about the central axis line B by the rotational axis portion. 36. In this example, although the rotational axis portion 36 is inserted to rotate relative to a support hole portion 74a, the rotational axis portion 36 can be inserted to the hole in the main portion of the housing. date finger body 35 to rotate about the central axis line B. In all cases, if the operation lever 70 is rotated in the directions A1 and A2, the center of rotation B of the axis portion of rotation 36 of the date finger structure 33 is rotated relative in the directions A1 and A2 with respect to the center of rotation H of the date indicator driving wheel 30.
The operating lever 70 which receives the prestressing force in the direction A1 due to the spring of the operating lever 71 is rotated about the central axis line A in the directions A1 and A2 between a rotational position P1 (Fig. 4 to 10 or 14 at the bottom in addition to Fig. 2), which is off-center in the A2 direction, and a change position on the last day of a short month or position P2 (Fig. 11 to 13 below) correction of the last day of a short month, which is off-center in direction A1.
More specifically, in this example, the operating lever 70 adopts the reference rotational position P1 which is off-center in the direction A2 (1) when the short month detection protrusion 75 presses against the cam surface by arc shape 65a having a large diameter corresponding to the least length in the cam surface 65 of the month cam 66, or (2) when the detection protrusion 76 of the last day of the month bears against an inner circumferential surface 42d of the part of the thick collar 42b of the date indicator 40, and the operating lever 70 presses against the correction position P2 correction of the last day of a short month which is off-center to turn in the direction A1 under the operation operating lever spring 71 (3a) when the short month detection protrusion 75 presses against the arcuate cam surface 65b having a small diameter corresponding at least short in the cam surface 65 of the of the month 66, and (3b) when the detection protrusion 76 of the last day of the month is inserted in the groove portion 48 of the last day of the month which is formed on the thick neck portion 42b of the date indicator 40 .
In other words, in this example, the operating lever 70 adopts the correction position P2 correction of the last day of the short month which is off-center in the direction A1 under the operation of the lever spring of operation 71 only in the case where the short month detection protrusion 75 presses against the arcuate cam surface 65b having a small diameter corresponding at least short in the cam surface 65 of the month cam 66 and the protrusion The last day of the month is inserted into the groove portion 48 of the last day of the month which is formed on the thick neck portion 42b of the date indicator 40, and otherwise the operating lever adopts the position. reference rotation P1 which is off-center in the direction A2.
When the operating lever 70 adopts the reference rotational position P1, the central axis of rotation B of the date finger structure 33 adopts a position Bh which coincides with the central axis line of FIG. rotation 30 of the date indicator driving wheel 30, and when the operating lever 70 adopts the correction rotation position P2 on the last day of the short month, the central axis of rotation B of the finger structure of date 33 adopts a correction date advancing position Br which is deflected in the direction A2 relative to the central axis of rotation H of the date indicator driving wheel 30. When the operating lever 70 is positioned in the reference rotational position P1 and the central axis of rotation B of the structure of the date finger 33 is positioned in the reference position Bh, as usual, the date finger structure 33 who is pressed by the pin of date 32 rotated according to the rotation of the date indicator driving wheel 30 and turned, advance the date indicator 40 by one tooth portion for one day. On the other hand, the operating lever 70 is positioned in the correction position of rotation P2 on the last day of the short month and the central axis of rotation B of the date finger structure 33 is positioned in the Br correction date advancement position, the date finger structure 33, which is pressed by the date pin 32 rotated according to the rotation of the date indicator driving wheel 30 and turned, is engaged with the gear 47 of the 40 date indicator twice in a day and advance the date indicator 40 by two parts of teeth in one day.
Next, a calendar operation of the timepiece 2 which includes the automatic calendar mechanism 1 configured as described above is described in more detail on the basis of FIGS. 4 to 14 in addition to figs. 1 to 3.
FIG. 2 shows a state where the date advancement is done in the long month. In the state shown in FIG. 2, since the state is not the short month, the short month detecting portion 75 of the operating lever 70 presses against the long month cam surface portion 65a having the shape of the cam surface portion In addition, the state is not the last day of the month, the detection portion 76 on the last day of the month of the operating lever 70 presses against the inner circumferential surface 42d of the thick neck portion 42b of the date indicator 40. Therefore, the operating lever 70 is positioned in the reference position P1 and the center of rotation B of the date finger structure 33 is positioned in the position Bh which coincides with the center of rotation H of the date indicator driving wheel 30. More specifically, in FIG. 2, it is approximately 22:44, August 30, and fig. 2 shows a state where the date indicator driving wheel 30 which is a 24-hour wheel rotated according to the rotation of the cylindrical wheel 16a is rotated about the central axis line H in a direction H1, and in accordance therewith , the date finger portion 34 of the date finger structure 33 which is positioned in the reference position Bh in which the center of rotation B coincides with the center H is engaged exactly with the gear portion 47 of the date indicator 40 and the date advancement in the direction C2 of the date indicator 40 begins.
FIG. 4 represents a state where some time passes and it becomes approximately midnight (0:00 am), August 31st. In this case, the positional ratio between the short month detecting portion 75 of the operating lever 70 and the month cam 66 and the positional ratio between the detecting portion on the last day of the month 76 of the operating lever 70 and the thick neck portion 42b of the date indicator 40 is approximately similar to the case of FIG. 2, the top of the jump jump clamp portion 22a of the date jumper 22 exactly reaches the top of the gear portion 47 of the date indicator 40, and if the jump restriction clip portion 22a passes through the top of the gear portion 47, the date advancement is completed, and as shown in FIG. 5, the date display is changed to the thirty-first day of the month. The time at this time is approximately midnight (0:00 am), August 31st.
If time passes and becomes approximately 22:44, August 31, as shown in FIG. 6, the date finger portion 34 of the date finger structure 33 is engaged with the gear portion 47 of the date indicator 40 and the date advancement begins. The state shown in FIG. 6 is substantially the same as the state of FIG. 2 except that day-date advancements and date-indicator 40 are one day ahead. The operating lever 70 being positioned in the reference position P1 is not changed.
If the time passes, since the date is close to the last day of the month, the finger portion of month 46 is engaged with the month indicator wheel 50, the rotation of the driving wheel begins. In addition, if the time becomes 24:00, August 31, that is, approximately midnight (0:00 am), September 1, as shown in FIG. 7, the top of the jump jump clip portion 22a of the date jumper 22 exactly reaches the top of the gear portion 47 of the date indicator 40, and the top of the jump restriction clip portion. 24a of the jumper of month 24 reaches exactly a vertex 64b of a gear portion 64a of the star of the months 64.
If the jump restriction clip portion 22a of the date jumper 22 passes through the top of the gear portion 47 and the jump restriction clip portion 24a of the month jumper 24 passes through the top 64b of the portion gear 64a, the date advancement and the month advancement are completed, and as shown in FIG. 8, the date display is changed to the first day of the month and the month display is changed from "August (AUG)" to "September (SEP)".
The state shown in FIG. 8 is substantially the same as the state of FIG. Except that the short month detecting portion 75 of the operating lever 70 is positioned in the position facing the short month cam surface portion 65b having the shape of the small diameter cam surface portion in the cam surface 65 of the month cam 66 after entry in September (short month), the detection portion 76 of the last day of the month of the operating lever 70 passes through the groove portion 48 of the last day of the month of the thick neck portion 42b of the date indicator 40 and pressing against the first day of the month area of the inner circumferential surface 42d of the thick neck portion 42b. The operating lever 70, which is positioned in the reference position P1, is not changed.
If the date progress continues and it is close to the last day of September and it is approximately 22:47, September 30, the state becomes the state shown in FIG. In this state, the date finger portion 34 of the date finger structure 33 is engaged with the gear portion 47 of the date indicator 40, and the date advancement begins. The state shown in FIG. 9 is substantially the same as the state of FIG. Except that the date advancements of approximately one month, the short month detecting portion 75 of the operating lever 70 is positioned in the position which faces the short month cam surface portion 65b having the form of the small diameter cam surface portion in the cam surface 65 and the month cam 66, the detection portion 76 of the last day of the month of the operating lever 70 presses against the area near the last day of the month of the month of the inner circumferential surface 42d of the thick neck portion 42b which is close to the groove portion 48 of the last day of the month of the thick neck portion 42b of the date indicator 40. The operating lever 70, which is positioned in the reference position P1, is not changed.
If the time passes slightly and becomes 0:04 am, on October 1, as shown in FIG. 10, the top of the jump gap clamp portion 22a of the date jumper 22 exactly reaches the top of the gear portion 47 of the date indicator 40, and the date display is changed from the "thirtieth day of the month "to" the thirty-first day of the month ".
Then, if the jump restriction clip portion 22a of the date jumper 22 passes through the top of the gear portion 47, as shown in FIG. 11, the date advancement of one day is completed, the date indicator 40 is rotated in the C2 direction faster than that, and the gear portion 47 also advances in the C2 direction. This time is approximately 0:05 am, October 1st. In addition, as shown in FIG. 11, the display at this time becomes a virtual display when the date is transferred from the short month which is "September 31" at least long. At this time, since the date is the virtual day that is September (short month) 31, the short month detection portion 75 of the operation lever 70 remains in the position that faces the month cam surface portion short 65b having the shape of the small diameter cam surface portion in the cam surface 65 of the month cam 66. Meanwhile, since the thirty-first day of the month is virtual and is the last day of the month, the detection portion 76 on the last day of the month of the operating lever 70 reaches the position that faces the groove portion 48 of the last day of the month of the thick neck portion 42b of the date indicator 40. Accordingly, since the short month detecting portion 75 of the operating lever 70 is inserted into the small diameter cam surface portion 65b in the cam surface 65 of the month cam 66 and the detecting portion 76 of the last day of the month the operation lever 70 is inserted in the groove portion 48 of the last day of the month of the thick neck part 42b of the date indicator 40, the correction position of rotation P2 on the last day of the short month is adopted in which the operating lever 70 is turned around the center line A in the direction A1. As a result, the center of rotation B of the date finger structure 33 is also moved in the direction A1, and the correction date advancement position Br of the last day of the short month is adopted in which the finger portion of date 34 is close to the rear of the gear portion 47 of the date indicator 40.
Subsequently, if the date indicator driving wheel 30 is rotated according to the rotation of the cylindrical wheel 16a and the date pin 32 is rotated, at approximately 2:04 am, October 1, as shown in fig. 12, the date pin 32 presses the gripper portion 34 of the date finger structure 33 which is positioned in the Br position, and a second date advancement (additional date advancement of the last day of the month in the short month) begins in which the gear portion 47 of the date indicator 40 is pressed by the gripper portion 34. In this state, the operating lever 70 is positioned in the position P2 and the center of rotation B of the structure of date finger 33 is positioned in position Br.
With the progression of the hour, the date indicator 40 is rotated in the direction C2, the rotation of the star of the months 64 by the indicator wheel of month 50 because of the finger part of month 46 begins, and if it is approximately 3:18 of the morning, the 1 of October as represented in fig. 13, the top of the jumping restriction clip portion 24a of the 24-hole jumper reaches the top of tooth 64a of the star of the month 64, and the top of the jump restriction clip portion 22a of the jumper of date 22 reaches the top of the gear portion 47 of the date indicator 40. At this time, in the month and date display part, the change of month from "September (SEP)" to "October ( OCT) "and the change of the date from the" thirty-first day of the month "to the" first day of the following month "are generated.
At approximately 3:18 in the morning, October 1 is immediately after that and is substantially the same time, as shown in FIG. 14, the jump operation of the jumping restriction clamp portion 24a of the jumper of month 24 is completed, the star of the months 64 is adjusted between the next adjacent teeth 64a and 64a, the jumping operation of the game 22 jump restriction clip 22a of the date jumper 22 is completed, and the date indicator 40 is set between the following adjacent gear parts 47 and 47 of the date indicator 40. In this manner, the display of month in the area 13a of the window portion 13 through the month dial 67 of the month indicator 60 is completely transferred to "October (OCT)", the date display in the area 13b of the part of window 13 through the date display part of the date indicator 40 is completely transferred to the "first day of the month", and "October 1" is moved. Further, in this state, the short month detecting portion 75 of the operating lever 70 abuts against the long month cam surface portion 65a having the shape of the large diameter cam surface portion in the cam 65 of the month cam 66, and the detection portion 76 on the last day of the month of the operating lever 70 bears against the portion which passes through the groove portion 48 of the last day of the month only in the circumferential direction C1 in the inner circumferential surface 42d of the thick neck portion 42b of the date indicator 40.
As a result, the time is the night of October 30 near the last day of the month long, an intermittent rotation (date advancement) of the date indicator 40 is repeated according to the rotation of the driving indicator wheel. of date 30 which has a 24-hour wheel due to the rotation of the cylindrical wheel 16a until the state becomes substantially similar to the state of FIG. 4 (state at approximately 22:44, Aug. 30), and subsequently, operations similar to those described in Figs. 4 to 14 are repeated depending on whether the month is the long month or the short month.
As described above, in the automatic calendar mechanism 1 of the timepiece 2, according to the commitment between the short month detection portion 75 of the operating lever 70 and the month cam 66 and the engagement between the detection portion 76 of the last day of the month of the operating lever 70 and the thick neck portion 42b of the date indicator 40, more specifically, according to the commitment between the short month detection protrusion 75 and the short month cam surface portion 65b having the shape of the small diameter arc portion of the month cam 66 and the engagement between the protrusion 76 of the last day of the month detection of the operating lever 70 and the groove portion 48 of the last day of the month of the thick neck portion 42b of the date indicator 40, when the date is transferred from the last day of the short month to the first day of the long month, the operating lever 70 is shot under the operation of the ress Operation lever 71, the center of rotation of the date finger structure 33 supported on the rotating portion of the operating lever 70 is rotated, and the additional date advancement is performed. Therefore, even when the date is transferred from the short month to the long month, the change of the calendar display of the month and date can be done appropriately.
In addition, when the LM and LD displays of the calendar mechanism 1 are correct, the winding stem 15a is closed, and the winding stem 15a is rotated in one direction or the other direction. More specifically, when the date LD that is moved on the date display window 13b is correct, for example, the winding stem 15a is rotated in a direction in the state where the winding stem is closed, a wheel of calendar correction 80 shown in FIGS. 2 and (b) of FIG. 3 is swung in one direction, the calendar correction wheel 80 is engaged with the date gear portion 45 of the date indicator 40, and the date indicator 40 is rotated in the C2 direction by the calendar correction 80 due to the rotation of the winding stem 15a. In addition, when the date LD which is displayed on the month display window 13a is correct, for example, the winding stem 15a is turned in the other direction in the state where the winding stem is closed, the calendar correction wheel 80 shown in FIGS. 2 and (b) of FIG. 3 is swung in the other direction, the calendar correction wheel 80 is engaged with a month correction pinion 82 of a month correction wheel 81, a month correction gear 83 of the month correction wheel 81 is rotated by the 82 month correction gear, the 64 month star is rotated due to the 83 month correction gear, and the 67 month month 67 dial is rotated in the direction C1. Mechanisms to correct the timing may be different.
Then, an example in which the additional date advance is made before the normal date advancement not after the normal date advancement will be described on the basis of Figs. 15 to 22 as a second preferred embodiment of the present invention. In a timepiece 2A which includes an automatic calendar mechanism 1A as the calendar mechanism of the second embodiment shown in FIGS. 15 to 22, the same elements as the elements of the timepiece 2 which includes the calendar mechanism 1 of the first embodiment shown in FIGS. 2 to 14 are indicated by the same reference numerals, and with respect to elements which correspond approximately but have certain different materials, a suffix A is added after the same reference numbers as the reference numbers of the elements of the calendar mechanism 1 of the corresponding timepiece 2.
Since the additional date advance is made in advance in the calendar mechanism 1A of the second embodiment, an operating lever 70A receives an elastic prestressing force in the direction A2 about the central axis line. A from an operating lever spring 71A. The operating lever 70A includes a date finger supporting a portion 74A in the opposite portion in the diameter direction of the timepiece 2A relative to the central axis line rotation A, adjacent the cam surface 65 of the month cam 66 by a short month detection portion 75A in the upstream side in the rotational influence direction, and including a detection portion 76A of the last day of the month in the opposite side to the detection portion The short month 75A is approximately similar to the operating lever housing 70. In this example, a groove portion 48A of the last day of the month formed in the inner circumferential surface 42d of the thick neck portion 42b of a date indicator. 40A is formed to be approximately similar to the groove portion 48 of the last day of the month except that the groove portion 48A is longer in the circumferential direction than the groove portion 48 of the last day of the month of the inner circumferential surface 42d of the thick neck portion 42b of the date indicator 40.
In the long month, as in FIG. Which represents the state of Aug. 31, since the short month detecting portion 75A of the operating lever 70A bears against the long month cam surface portion 65a having the shape of the large diameter cam surface portion. of the month cam 66 and the detection portion 76A of the last day of the month of the operating lever 70A is positioned in the radial direction close to the inner circumferential surface 42d of the thick neck portion 42b of the date indicator 40A the portion 76A is not inserted into the groove portion 48A in the vicinity of the opening of the groove portion 48A of the last day of the month. In the state where the operating lever 70A adopts a reference position P1A, the finger structure 33 is positioned in the position Bh in which the center of rotation B coincides with the center of rotation H of the drive wheel date indicator 30, substantially, according to the rotation of the date pin 32 of the date indicator driving wheel 30, the finger structure is engaged with the gear portion 47 which is positioned in the nearest position of the date indicator 40 at approximately 22:44 once a day as shown, and the date advancement of the date indicator 40 is performed by a tooth part. A state at approximately midnight (0:00 am), September 1 in which the date advancement for a day ends is shown in fig. 16.
In addition, when it enters the state of FIG. 16 after the state of FIG. 15, since the date indicator 40 is rotated in the C2 direction by a tooth portion (by a day) when the jump restriction clip portion 22a of the date jumper 22 performs a jump restriction operation in which the part of the clip passes through the top of the gear portion 47 of the date indicator 40 and bends between the following gear portions 47 and 47, on one side the next tooth 47 reaches the rearward approaching position of the structure of the date finger 33 and the date display is changed from "thirty-first month" to "the first day of the following month", on the other hand, the gripping part of the driving wheel of month indicator 50 of the month 46 finger portion reaching the rear of the gear portion 52 is engaged with the gear portion 52, the month indicator driving wheel 50 is turned, the star of the months 64 is turned by the 50 month indicator leading wheel, and the affic month month of the month indicator 60 is changed from "August (AUG)" to "September (SEP)".
As shown in FIGS. 17 to 18, the advancement of the date of the short month is also carried out similarly to the advancement of the date of the long month excepting the last day of the month. Moreover, in the short month, as defined by fig. 17, since the detection portion 76A of the last day of the month of the operating lever 70A bears against the inner circumferential surface 42d of the thick neck portion 42b of the date indicator 40 except for the last day of the month, although the 75A short month detection portion of the operation lever 70A faces the concave portion of the month cam 66 or the short month cam surface portion 65b having the shape of the small diameter cam surface portion, the short month detection portion does not fall at the cam surface concave portion 65b of the month cam 66, the date finger 74A holding portion is also held at the B position which coincides with the H position, as Usually, the date advancement for a tooth part is done in one day, and it becomes the state shown in fig. 18. In addition, in fig. 18, since it becomes September 30 and last day of the short month, it becomes approximately 0:05 more or less later than usual, it is transferred to a P2A position in which the short month detection portion 75A of the 70A operation lever down to the 65b short month cam surface portion having the small diameter concave shape and the last day of the operation lever 70A detection portion 76A drops to the groove portion 48A of the last day of the month of the thick neck portion 42b of the date indicator 40A. In this state P2A, the position of the center of rotation B of the date finger 33 which is supported on the part supporting a date finger 74A of the operating lever 70A adopts a position BrA which is deflected in the direction A2 from the position of the center of rotation H of the date indicator driving wheel 30.
September 30 which is the last day of the month runs, as shown in FIG. 19, the date finger structure 33, in which the center of rotation is positioned in the BrA position further deflected in the A2 direction than usual, is engaged with the tooth 47 of the date indicator 40A to approximately 20: 41, and the date advancement begins.
In a state of FIG. 20 in which the jump restriction operation is completed by the date jumper 22, the date indicator 40A advances in a direction C2 by a tooth portion, the date display is changed from the "thirtieth day of the month" at the "thirty-first day of the month", some advanced teeth due to the date finger structure 33 in the state of fig. 19 reach the position that is more or less separated in front in the direction C2 (in this example, the teeth are positioned more towards the equivalence of approximately one hour). In fig. 19, the moment the last added date advancement of the last day of the short month is completed is approximately 21:36. In this state, the month finger portion 46 of the date indicator 40A reaches immediately before the gear portion 52 of the month indicator driving wheel 50.
If approximately one hour passes, as shown in FIG. 21, at approximately 22:34, September 30, according to the rotation of the date indicator driving wheel 30, the date pin 32 presses the date finger structure 33 in which the center of rotation is positioned in the position BrA, the additional date advancement starts at the second date advancement of the last day of the short month using the 33 finger structure.
When the date advancement is performed using the date indicator driving wheel 30, the date jumper 22 performs the jump restriction operation while the state of FIG. 21 is transferred to the state of FIG. 22, the date indicator 40A is rotated by a tooth portion in the direction C2, the date display is changed from the "thirty-first day of the month" to the "first day of the following month", the portion of month finger 46 advances the gear portion 52 of the month indicator driving wheel 50 according to the rotation in the direction C2 of the date indicator 40A. At this time, the month star 64 is rotated by a tooth part due to the jump jumping restriction operation of month 24 relative to the star of the month 64, and the month display is changed from "September (SEP)" to "October (OCT)" because of the month 67 dial of the month 60 indicator. Moreover, substantially, since it is changed from the short month to the least long in FIG. 22, the short month detection portion 75A of the operating lever 70A bears against the long month cam surface portion, 65a having the shape of the large diameter cam surface portion in the cam surface 65 of the month cam 66, and the last day of the month detecting portion 76A exits the groove portion 48 of the last day of the month of the thick neck portion 42b of the date indicator 40A and presses against the inner circumferential surface 42d the thick neck portion 42b. As a result, the date finger holder portion 74A of the operating lever 70A is also returned to the original position, and the center of rotation B of the date finger structure 33 coincides with the center of rotation H of the wheel leading date indicator 30.
Instead of the cam surface 65 of the month cam 66 including the long month cam surface portion 65a having the shape of a convex portion (an arc-shaped cam surface portion having a large diameter) and the short month cam surface portion 65b having the shape of a concave portion (an arc-shaped cam surface portion having a small diameter), as shown in a third embodiment of FIGS. fig. 23 to 30, a cam surface 65B of a month cam 66B may include a long month cam surface portion 65aB in the form of a concave portion (an arcuate cam surface portion having a small diameter) and a short month cam surface portion 65bB having the shape of a convex portion (an arc-shaped cam surface portion having a large diameter). In a timepiece 2B which includes a calendar mechanism 1B of FIGS. 23 to 30, the same elements as the elements of the timepiece 2 which includes the calendar mechanism 1 of FIGS. 2 to 14 or the elements of the timepiece 2A which includes the calendar mechanism 1A of FIGS. 15 to 22 are indicated by the same reference numbers as those of the elements, and with respect to the elements which approximately correspond to the elements of the timepiece 2 including the calendar mechanism 1 of FIGS. 2 to 14 but have certain different materials or elements which approximately correspond to the elements of the timepiece 2A including the calendar mechanism 1A of FIGS. 15 to 22 but have some different materials, the reference number B is added after the same reference numbers (a reference number in which A is deleted when the reference number A is included in the last).
In a calendar mechanism 1B, operating lever means 70B take the form of a link mechanism that includes a first operating lever 77 and a second operating lever 78. The first lever of operation operation 77 is rotatably supported on the date indicator holding plate 21 in directions A1 and A2 about the central axis line A by an axis of rotation 25B in a base end 77a and includes a portion detecting short month 75B in a side of a tip portion 77b. That is, in the third embodiment of FIG. 23 and the like, in place of the operating lever means 70B including the short month detection portion 75A in a side A1 of the month cam 66 which has the short month cam surface portion 65b having the a concave portion, and the operating lever means 70B includes the short month detection portion 75B in a side A2 (the side in which the groove portion 48A of the last day of the month of the date indicator 40A is positioned in the last day of the month) of the month cam 66B which includes the short month cam surface portion 65bB having the shape of a convex portion. The first operating lever 77 receives the biasing force in the A1 direction due to a first operating lever spring 77c, and the short month detecting portion 75B pressing the cam surface 65B of the month cam 66B.
The second operating lever 78 is rotatably connected to a pin 77e, which is constructed on an intermediate portion 77d of the first operating lever 77, in the directions D1 and D2 about the central axis line. D by a connecting portion 78a positioned in the vicinity of the base end. The second operating lever 78 rotatably supports the date finger structure 33 about the central axis line B using a date finger holder portion 74B of the tip portion of an arm portion 78b , includes a detection portion 76B of the last day of the month which bears against the inner circumferential surface 42d of the thick neck portion 42b of the date indicator 40 in the tip of an arm portion 78c, and is configured to a side edge 78e of a base end 78d presses against the axis of rotation 25B and rotation or tilting in the direction D1 is set. The second operating lever 78 receives a small tilting and prestressing force in the direction D2 by a second operating lever spring 78f through the detection portion 76B on the last day of the month.
In the calendar mechanism 1B which includes the operating lever means 70B having the form of the link mechanism including the first and second operation levers 77 and 78 configured as described above, in the long month, like fig. 23 which represents the state of August 31, since the short month detection portion 75B of the first operating lever 77 bears against the concave portion of the month cam 66B or the long month cam surface portion 65aB having the in the form of a small diameter cam surface portion under the operation of the first operating lever spring 77c, the operating lever means 70B assume a position P1B which is entirely rotated in the direction A1. In the state P1 B, in the second operating lever 78, the rotational position in the direction D2 is set and positioned by the axis of rotation 25B in the side edge 78e of the base portion 78d, the center rotation B of the date finger structure 33 supported on the second operating lever 78 takes the position Bh which coincides with the center of rotation H of the date indicator driving wheel 30, and the detection portion 76B of the last day of the month pressing against the inner circumferential surface 42d of the thick neck portion 42b of the date indicator 40A adopts the position by approaching with more or less intervals (is not inserted into the groove portion 48A of the last day of the month). In this state, according to the rotation of the date pin 32 of the date indicator driving wheel 30, substantially, as shown, the date finger structure 33 is engaged with the gear portion 47 positioned in the position closer to the 40A date indicator at approximately 22:44 once in a day, and the date advancement is done by a 40-date indicator tooth. The state at approximately midnight (0 am), the 1 of September in which the advancement of date for a day ends is represented in fig. 24.
In addition, when it enters the state of FIG. 24 after the state of FIG. 23, since the date indicator 40A is rotated in the C2 direction by a tooth portion (by a day) when the jump restriction clip portion 22a of the date jumper 22 performs the jump restriction operation in which the gripper portion passes through the top of the gear portion 47 of the date indicator 40A and bends between the following gear portions 47 and 47, on one side the next gear 47 reaches the approaching position back of the date finger structure 33 and the date display is changed from "the thirty-first day of the month" to "the first day of the following month", on the other hand, the month finger part 46 reaching the rear of the gear portion 52 of the month indicator driving wheel 50 is engaged with the gear portion 52, the month indicator driving wheel 50 is rotated, the star of the months 64 is turned by the 50 month indicator leading wheel, and the month display of the 60 months flag is changed from "August (AUG)" to "September (September)."
As shown in FIGS. 25 and 26, the advancement of the date of the short month is also carried out similarly to the advancement of the date of the long month excepting the last day of the month. Moreover, in the short month, as defined in fig. 25, since the short month detection portion 75B of the first operating lever 77 bears against the convex portion of the month cam 66B or the short month cam surface portion 65bB having the shape of a surface portion of large diameter cam under the operation of the first operating lever spring 77c, the first operating lever 77 adopts the position which is rotated in the direction A2. Therefore, the second operating lever 78 is also balanced in the direction A2. The tilting in the direction A2 of the second operating lever 78 which is rotatably connected to the first operating lever 77 by the connecting pin 77e stops at the position, in which the detection portion 76B of the last day of the month of second operating lever 78 presses on the inner circumferential surface 42d of the thick neck portion 42b of the date indicator 40, in another than the last day of the month. In this state other than the last day of the month, the center of rotation B of the date finger structure 33 which is supported on the second operating lever 78 adopts the position Bh which coincides with the center of rotation H of the wheel Therefore, as usual, the date advancement of a tooth part in a day is performed, and it reaches a state shown in FIG. 26.
In addition, in FIG. 26, since it becomes September 30 and last day of the short month, at approximately midnight (0:00 am), it is transferred to a P2B position in which the detection portion 76B of the last day of the month of the second lever of operation 78 of the operating lever means 70B decreases in the groove portion 48A of the last day of the month of the thick neck portion 42b of the date indicator 40A in a state where the short month detection portion 75B of the first operating lever 77 operating lever means 70B presses against a short month cam surface portion 65bA having the shape of a large diameter arc-shaped portion. In this state P2B, the center of rotation B of the date finger 33 which is supported on the date finger support portion 74B of the second operating lever 78 adopts a position BrB which is deflected in the direction D2 from the position of the center of rotation H of the date indicator driving wheel 30.
September 30 is the last day of the short month, as shown in FIG. 27, the date finger 33, in which the center of rotation is positioned in the BrB position further deflected in a direction D2 than usual, is engaged with the tooth 47 of the date indicator 40A from approximately 20:41, and the date advancement begins.
In a state of FIG. 28 in which the jump restriction operation is completed by the date jumper 22, the date indicator 40A advances in the direction C2 by a tooth portion, the date display is changed from the "thirtieth day of the month" at the "thirty-first day of the month", some advanced tooth 47 due to the date finger structure 33 in the state of FIG. 27 reaches the position which is more or less separated in the front part in the direction C2 (in this example, the tooth is positioned farther forward by the equivalence of approximately one hour). In fig. 28, the moment the additional advancement of the previous date of the last day of the short month is completed is approximately 21:36. In this state, the month finger portion 46 of the date indicator 40A reaches immediately before the gear portion 52 of the month indicator driving wheel 50.
[0080] If approximately one hour passes, as shown in FIG. 29, at approximately 22:34, September 30, according to the rotation of the date indicator driving wheel 30, the date pin 32 presses the date finger structure 33 in which the center of rotation is positioned in the position BrB, the normal date advancement starts as the second date advancement of the last day of the short month using the 33 finger structure.
When the date advancement is performed using the date indicator driving wheel 30, the date jumper 22 performs the jump restriction operation while the state of FIG. 29 is transferred to the state of FIG. 30, the date indicator 40A is rotated by a tooth portion in the direction C2, the date display is changed from the "thirty-first day of the month" to the "first day of the following month", the portion of month finger 46 advances the gear portion 52 of the month indicator driving wheel 50 according to the rotation in the direction C2 of the date indicator 40A. At this time, the month star 64 is rotated by a tooth part due to the jump jumping restriction operation of month 24 relative to the star of the month 64, and the month display is changed from "September (SEP)" to "October (OCT)" due to the month 67 dial of the 60B month indicator. In addition, substantially, since it is changed from the short month to the least in fig. 30, the short month detection portion 75B of the first operating lever 77 of the operating lever means 70B bears against the long month cam surface portion 65aB having the shape of the small diameter cam surface portion in the cam surface 65B of the month cam 66B, and the detection portion 76B on the last day of the month of the second operating lever 78 exits the groove portion 48A of the last day of the month of the thick neck portion 42b of the date indicator 40A and presses against the inner circumferential surface 42d of the thick neck portion 42b. As a result, the date finger holder portion 74B of the second operating lever 78 is also returned to the original position and adopts the position Bh in which the center of rotation B of the date finger structure 33 coincides with the center H rotation of the date indicator wheel 30.
In a timepiece 2C which includes a calendar mechanism 1C of FIG. 31, the same elements as the elements of the timepiece 2 which includes the calendar mechanism 1 of FIGS. 2 to 14 or the elements of the timepiece 2B which includes the calendar mechanism 1B of FIGS. 23 to 30 are indicated by the same reference numbers as those of the elements, and with respect to elements which correspond approximately to the elements but have certain different materials, the reference number C is added to the last of the same reference numbers (a reference in which B is deleted when reference number B is included in the last reference number). The timepiece 2C which includes the calendar mechanism 1C of FIG. 31 is similar to timepiece 2B which includes calendar mechanism 1B in that the cam surface 65B of the month cam 66B includes the short month cam surface portion 65aB having the shape of the concave portion ( an arcuate cam surface portion having a small diameter) and the short month cam surface portion 65bB having the shape of the convex portion (arc-shaped cam surface portion having a large diameter). However, the timepiece 2C is different from the timepiece 2B which includes the calendar mechanism 1B and is similar to the timepiece 2 which includes the calendar mechanism 1 in that the additional date advancement on the last day of the short month is done to be similar to the normal date advancement.
In the calendar mechanism 1C, operating lever means 70C take the form of a link mechanism that includes a first operating lever 77C and a second operating lever 78C. The first operating lever 11C is rotatably supported on the date indicator holding plate 21 in the directions A1 and A2 about the central axis line A by an axis of rotation 25C in a base end 77aC and includes a short month detection portion 75C in a side of a tip portion 77bC. That is, in the example of FIG. 31, the operating lever means 70C includes the short month detection portion 75C in the A1 side (the side in which the groove portion 48 of the last day of the month of the date indicator 40 is positioned in the last day of the month) of a month cam 66B which includes the short month cam surface portion 65bB having the shape of a convex portion. The first operating lever 77C receives the biasing force in the A2 direction due to a first operating lever spring 77cC, and the short month detecting portion 75C pressing the cam surface 65B of the month cam 66B.
The second operating lever 78C is rotatably connected to a pin 77eC, which is constructed on an intermediate portion 77dC of the first operating lever 77C, in the directions D1 and D2 about the central axis line. D by a connection portion 78aC positioned in the vicinity of the base end. The second operating lever 78C rotatably supports the date finger structure 33 about the central axis line B using a date finger holder portion 74C positioned in the tip portion of an arm portion 78bC , includes a detection portion 76C of the last day of the month which bears against the inner circumferential surface 42d of the thick neck portion 42b of the date indicator 40 in the tip of an arm portion 78cC, and is configured to a side edge 78eC of a base end 78dC bears against an axis of rotation 25C and the rotation or tilting in the direction D1 is set. The second operating lever 78C receives a small tilting and prestressing force in the direction D1 by a second operating lever spring 78fC through the detection portion 76C on the last day of the month.
In operation lever means 70C having the form of the link mechanism including the first and second operation levers 77C and 78C configured as described below, in the long month, since the month detection portion 75C of the first operating lever 77C presses against the long month cam surface portion 65aB of the month cam 66B formed in a concave portion under the operation of the first operating lever spring 77cC, the lever means operating 70C adopt the position P1C which is entirely turned in the direction A2. In the state P1C, in the second operating lever 78C, the rotational position in the direction D1 is set and positioned by the axis of rotation 25C in the side edge 78eC of the base portion 78dC, the center of rotation B of the date finger structure 33 supported on the second operating lever 78C adopts the position Bh which coincides with the center of rotation H of the date indicator driving wheel 30, and the detection portion 76C of the last day of the month adjoining the inner circumferential surface 42d of the thick neck portion 42b of the date indicator 40 adopts the approaching position with more or less interval (is not inserted in the groove portion 48 of the last day of the month).
On the other hand, in the short month, since the short month detection portion 75C of the first operating lever 11C presses against the large diameter cam surface portion 65bB of the month cam 66B formed in a concave portion under the operation of the first operating lever spring 77cC, the first operating lever 77C adopts the position which is rotated in the direction A1. Therefore, the second operating lever 78C is also balanced in the direction A1. The tilting in the direction A1 of the second operating lever 78 which is rotatably connected to the first operating lever 77C by the connecting pin 77eC stops at the position, in which the detection portion 76C of the last day of the The month of the second operating lever 78 presses against the inner circumferential surface 42d of the thick neck portion 42b of the date indicator 40, in another than the last day of the month. In this state other than the last day of the month, the center of rotation B of the date finger structure 33 which is supported on the second operating lever 78C adopts the position Bh which coincides with the center of rotation H of the wheel leading date indicator 30.
If it becomes the last day of the short month, since the detection portion 76C on the last day of the month is inserted into the groove portion 48 of the last day of the month which is positioned in the inner circumferential surface 42d of the part of the month. the thickened collar 42b of the date indicator 40, the second operating lever 78C is rotated around the central axis line D in the direction D relative to the first operating lever 77C, the center of rotation B of the date finger structure 33 supported on the second operating lever 78C is moved to rotate in the direction D1 with respect to the center of rotation H of the date indicator driving wheel 30 and adopts the position similar to the position Br, and the additional date advancement is made once the month change is made from the last day of the month runs to the first day of the long month.
That is to say, the timepiece 2C which includes the calendar mechanism 1C of a fourth embodiment shown in FIG. 31 substantially has the configuration similar to that of the timepiece 2 which includes the calendar mechanism 1 of FIG. Except that the operating lever means 70C including the short month cam surface portion 65bB in which the cam surface 65B of the month cam 66B has the shape which is not a concave portion but a convex portion include first and second operation levers 77C and 78C which mutually form the link mechanism according to the materials described above and the short month detection portion 75C is positioned in the A1 side of the month cam 66B, and it is obvious that the timing mechanism 1C of the timepiece 2C of FIG. 31 is operated to be substantially similar to the timing mechanism 1 of the timepiece 2, the timing mechanism 1B of the timepiece 1B, or the like, the detailed descriptions are omitted.
The number of teeth of the star of the months may be increased, in a 2D timepiece which includes a 1D calendar mechanism of a fifth embodiment shown in FIGS. 32 to 37, a 64D month star of the 1D timing mechanism has the 63D teeth which are 24 in number and are rotated by two teeth for one month.
Since the 1D calendar mechanism of the 2D timepiece shown in FIGS. 32 to 37 is similar to the initial embodiment (first embodiment) shown in FIGS. 2 to 14 in that a month cam 66D includes long month cam surface portions 65aD1 and 65aD2 having the shape of a large diameter or a convex portion and a short month cam surface portion 65bD2 having the shape of a small diameter or a concave portion and the second date advancement is performed as the additional date advancement after the normal date advancement, the same elements similar to the elements of the first embodiment are indicated by the same numbers. reference, and with respect to elements that have approximately similar functions but have some different materials, a suffix D is added to the last of the same reference numbers as the elements of the first embodiment.
In the 1D timing mechanism of the fifth embodiment, a 50D month indicator driving wheel coaxially and integrally includes a month indicator gear 53 having a large diameter and a month indicator leading gear. 54 having a small diameter. The month indicator 53 month driving gear of the 50D month indicator wheel is engaged with the month 46 finger part of a 40D date indicator and is rotated by two teeth for one month by the indicator of date 40D. The month indicator leading gear 54 of a 50D month indicator wheel is engaged with the 64D month star, is rotated according to the rotation of the month indicator gear 53, and turns the 64D month star of two teeth for one month. The 67D month dial is evenly divided into 24, and similar to "JAN (January), JAN (January), FEB (February), FEB (February), ..., August (AUG), Aug (AUG), September (SEP), September (SEP), ... "the same month is repeated twice.
More specifically, according to the rotation in the direction C2 of the date indicator 40D, approximately at the end of the thirtieth day of each month, for example, between approximately 22:44 and approximately 24 on the thirtieth, the first progress of month of each month (month 46 progress finger part in the C2 direction due to the 40D date indicator) is performed, and thereafter, the second month advancement of each month is performed. When the first month advance of each month is performed, a 75D short operation detection portion of the operation lever 70D presses a short month cam surface portion 65bD1 having the shape of a large diameter portion of the month cam 66D, and 75D short month detection portion of the operating lever is inserted into a short month cam surface portion 65bD2 having the shape of a small diameter concave portion of the 66D month cam only at the time of the second month advancement in the last day of the short month. Accordingly, the short month detection portion 75D also operates as a detection portion 76D on the last day of the short month (the short month detection portion and the detection portion on the last day of the month are also indicated by the reference 79D), the short month cam surface portion 65bD2 having the shape of a small diameter concave portion operates not only the cam surface portion which indicates the short month but also the concave portion of the last day of the month which indicates the last day of the short month. Therefore, in the calendar mechanism 1D, the operation lever 70D includes an arm portion that has a date finger holder portion 74D, and an arm portion that includes the detection portion 75D that operates as the portion short month detection and detection part on the last day of the month, i.e., the detection of the short month and the detection part on the last day of the month 79D, in which two parts of arms can turn around of the central axis line A, and the detection part on the last day of the month is not provided independently.
Then, the operation of the calendar mechanism 1D is sequentially described in more detail on the basis of FIGS. 32 to 37.
For example, FIG. 32 is approximately at the end of the long month and represents the state of the 1D timing mechanism of the 2D timepiece at approximately 22:44 on August 31st. In this state, the 64D month star is rotated by half a month (one tooth part among two tooth parts), the detection part 75D the short month and the last day of the month of the operating lever 70D configuring a cam follower presses against the last day side area 65aD2 of the month in the long month cam surface portion 65a having the shape of a large diameter that indicates August which is a month long of the month cam 66D evenly divided into 24, and the 67D month dial displays the second August (AUG). The operation lever 70D is positioned in the normal position P1D, and the center of rotation B of the date finger structure 33 adopts the position Bh which coincides with the center of rotation H of the date indicator driving wheel. According to the rotation of the date indicator driving wheel 30, the advancement of the gear portion 47 of the date indicator 40D starts from that moment due to the date finger structure 33, the indicator 40D is rotated in the C2 direction. As a result, the month 46 finger portion turns the month indicator gearing 53 and turns the 64D month star through the month indicator gear 54. At approximately 0:00, on September 1 in which the date jumper 22 and the month jumper 24 are lowered and the jump restriction operation is completed, as shown in FIG. 33, the display is changed from "August (AUG)" to "September (SEP)", and the date is changed from "the thirty-first day of the month" to "the first day of the following month". A 24bD reference number indicates a month jumper spring.
Then, if it becomes approximately 22:44, September 30 after only the similar date advancement is repeated, it becomes the state shown in FIG. 34. In this state, since the detection portion 75D or 79D of the month runs and the last day of the month of operation lever 70D is engaged to press against the first half of September which is a short month of the 66D month cam , i.e., the short month cam surface portion 65bD1 having a large diameter portion and that state is held, the finger portion 33 is engaged with the gear portion 47 of the date 40D by the rotation of the date finger portion 33 according to the rotation of the date indicator driving wheel 30 into a state where the center of rotation B of the date finger structure 33 adopts the position Bh coinciding with the center of rotation H of the date indicator driving wheel 30, the date indicator 40D is pressed in the direction C2, and the first date advancement is performed. At this time, the month finger portion 46 turns the 64D month star through a tooth portion by the month indicator gearing 53. At approximately 0:00, on October 1 in which the date jumper 22 and the month jumper 24 is lowered and the jump restriction operation is completed, as shown in FIG. 35, the display is changed from the first half of "September (SEP)" to the second half of "September (SEP)" (however, appearances are the same), and the date is changed from "Thirtieth day of the month" At the "thirty-first day of the month". In addition, at the moment when the jump restriction operation is completed, as shown in FIG. 35, the detection portion 75D or 79D of the short month and the last day of the month of the operation lever 70D decreases in the second half of September which is the short month of the month cam 66D, i.e. say, at the short month cam surface portion 65bD2 having the shape of a small diameter portion, and the center of rotation B of the date finger structure 33 which is supported by the support portion 74D of the lever operation 70D takes the position BrD which is deflected from the center of rotation H of the date indicator driving wheel 30. In this way, in the state where the operating lever 70D adopts the correction rotation position P2D on the last day of the short month, the date finger structure 33 is again positioned at the back of the tooth 47 in which the date advancement just ends.
Accordingly, as shown in FIG. 36, if approximately two hours pass and it becomes approximately 2:04, on October 1, the date finger 33 which is pressed by the date pin 32 is engaged with the tooth 40 of the date indicator 40D again and turn the date indicator 40D in the direction C2, and according to the rotation of the date indicator 40D, the month finger portion 46 turns the 64D month star by a tooth portion again by the driving wheel month indicator 50D including the month indicator lead gear 53 similar to the last day of the month of the long month (the change from Fig. 32 in Fig. 33). At approximately 3:18, on October 1 in which the date jumper 22 and the month jumper 24 are lowered and the jump restriction operation is completed, as shown in FIG. 37, the posting is changed from the second half of "September (SEP)" to the first half of "October (OCT)", and the date is changed from "the thirty-first day of the month" to "the first day next month ". Moreover, in the moment when the jump restriction operation is completed, as shown in FIG. 37, the detection part 75D the short month and the last day of the month of operation lever 70D rises the first half of October which is the month along the 66D month cam, that is, the a long month cam surface portion 65aD1 having the shape of a large diameter portion, and the center of rotation B of the date finger structure 33 which is supported by the support portion 74D of the operation lever 70D is returned to the normal position Bh which coincides with the center of rotation H of the date indicator driving wheel 30.
In place of the cam surface 65D of the month cam 66D including the long month cam surface portions 65aD1 and 65aD2 and the forward step of the short month cam surface portion 65bD1 having the shape of a cam. a convex portion (a bow-shaped cam surface portion having a large diameter), and reversing (last day of the month) a short month cam surface portion 65bD2 having the shape of a concave portion (an arc-shaped cam surface portion having a small diameter) in the fifth embodiment is shown in FIGS. 32 to 37, as shown in a sixth embodiment of FIG. 38, a cam surface 65E of a month cam 66E may include long month cam surface portions 65aE1 and 65aE2 and a forward step of a short month cam surface portion 65bE1 having the shape of a concave portion (an arcuate cam surface portion having a small diameter), and a reverse (last day of the month) of a short month cam surface portion 65bE2 having the shape of a convex portion (An arc-shaped cam surface portion having a large diameter). In a timepiece 2E which includes a calendar mechanism 1E of FIG. 38, the same elements as the elements of the timepiece 2 which includes the calendar mechanism 1 of FIGS. 2 to 14 or the elements of the 2D timepiece which includes the calendar mechanism 1D of FIGS. 32 to 37 are indicated by the same reference numbers as those of the elements, and with respect to elements that correspond approximately to the elements but have certain different materials, the reference number E is added after the same reference numbers (a reference number where D is deleted when reference number D is included in the last reference number).
In the calendar mechanism 1E, the cam surface of the part of the last day of the short month portion becomes the short month cam surface portion 65bE2 having the shape of a convex portion (a cam surface). in the form of a bow having a large diameter), and in this way an operating lever 70E is different from the operating lever 70D in that a short month detection portion and a detection portion on the last day of the 75E or 79E of the operating lever 70E are positioned in the side (the A1 side not the A2 side in the 66E month cam) approximately opposite the short month detection part and the detection part the last day of the month 75D or 79D operating lever 70D. However, otherwise, the operating lever 70E is configured to be approximately similar to the operating lever 70D. Moreover, in the calendar mechanism 1 E, since the short month detection portion 75E of the operation lever 70E also serves as the detection portion on the last day of the month and the short month cam surface portion 65bE2 having the The shape of a convex portion of the month cam 66E also serves as a detection part on the last day of the month, contrary to the case of the fourth embodiment shown in FIG. 31 in which the date indicator 40D includes the groove portion 48 of the last day of the month, the date indicator 40D does not need to include the groove portion of the last day of the month. Therefore, unlike the operating lever means 70C, the operating lever means 70E need not be in the form of a link mechanism and are similar to the lever 70D of the fifth embodiment in that the means for lever 70E are configured from the lever by having a form of a single integrated structure.
FIG. 38 shows a state of the timing mechanism 1E of the timepiece 2E at approximately 22:44 on August 30 which is near the end of the long month. Since the last day of the month runs from the month cam is configured from the convex portion 65bE2 instead of the concave portion 65bD2 in the calendar mechanism 1E, and according to this, the operation lever includes the detection portion of month short and the part to detect the last day of the month 75E in the other side, it is obvious that the 1E calendar mechanism operates to be substantially similar to the 1D calendar mechanism, and therefore the detailed descriptions are omitted.
In place of the additional date advancement being performed as the second date advancement in the type in which the month dial 67D is divided into 24 as shown in the fifth embodiment of Figs. 32 to 37, a 2F timepiece that includes a 1F calendar mechanism, in which the additional date advancement is performed (as the first date advancement in two times a date advancement) before similar date advancement in the case of the second embodiment of FIGS. 15 to 22, is shown in FIG. 39 as a seventh embodiment.
In the calendar mechanism 1F, the seventh embodiment is similar to the fifth embodiment in that in the cam surface 65D of the month cam 66D, the long month cam surface portions 65aD1 and 65aD2 configuring the forward march of the long month and the reverse (last day of the month) and the short month cam surface portion 65bD1 configuring the short month forward march adopt the shape of a convex portion (a cam surface portion arc shape having a large diameter) and the short month camming surface portion 65bD2 configuring the reverse (the last day of the month) of the short month adopts the shape of a concave portion (a cam surface portion) arc-shaped having a small diameter). Accordingly, the seventh embodiment is substantially

权利要求:
Claims (10)
[1]
similar to the fifth embodiment also in that an operation lever 70F includes the arm portion having a support portion 74F that supports the date finger structure 33 and a 75F or 79F engaging protrusion portion that operates of the short month detection portion and the detection portion on the last day of the month, and the disposition of the operation lever 70F is approximately similar to the operation lever 70A of the second embodiment shown in Figs. 15 to 22 except for the non-presence of the independent detection part on the last day of the month. In addition, in the seventh embodiment shown in FIG. 39, the diameters and the number of teeth of a month indicator gearing 53F and a month indicator drive gear 54F of a month indicator driving wheel 50F are configured to be smaller than those of the month 53 indicator leading gear and the month indicator leading gear 54 of the fifth month driving indicator wheel 50D of the fifth embodiment, and the teeth 55F of the indicator driving gear 53F months are engaged with a 46F month finger of a 40F indicator only once. In this way, the calendar mechanism 1F is configured to be similar to the calendar mechanisms 1D except for including a first month finger portion 46F1 which is operated when the display of the date indicator 40F is changed from the twenty-ninth day of the month to the thirtieth day of the month and a second month finger part 46F2 which is operated when the display is changed from the thirty-first day of the month to the first day of the following month. Since it is obvious that the calendar mechanism 1F is operated to be substantially similar to the 1D calendar mechanism, the detailed descriptions are omitted. In the type in which the month dial 67D is divided into 24 as shown in the fifth embodiment of FIGS. 32 to 37, a timepiece 2G which includes a calendar mechanism 1G adopting the following materials is shown in FIG. 40 as an eighth embodiment. That is, instead of the additional date advancement being performed as the second date advancement after normal date advancement, similar to the case of the second embodiment of Figs. 15 to 22, the additional date advancement is performed before the normal date advancement (as the first date advancement of two times a date advancement), and similar to the case of the cam surface 65E of the month cam 66E of the sixth embodiment shown in FIG. 38, the short month camming surface portion 65bE2 of the reverse (the last day of the month) of the short month takes the form of a convex portion (a bow-shaped cam surface portion having a large diameter ), another (forward and reverse (the last day of the month) of the long month and the forward of the short month) cam surface part, that is, the cam surface parts of the long month 65aE1 and 65aE2 and the short month cam surface portion 65bE1 adopts the shape of a concave surface (a small diameter cam surface portion). An operating lever 70G of the eighth embodiment is substantially similar to the sixth embodiment also in that the operating lever 70G includes the arm portion having a support portion 74G that supports the finger structure of the date 33 and a commitment protrusion portion 75G or 79G that operates from the short month detection portion and the detection portion on the last day of the month, and the disposition of the operation lever 70G is approximately similar to the lever of operation 70B of the third embodiment shown in FIGS. 23 to 30 except for the non-presence of the independent detection part on the last day of the month. In addition, the month indicator driving wheel 50F and the date indicator 40F of the eighth embodiment shown in FIG. 40 are configured to be similar to the month indicator driving wheel 50F and the date indicator 40F of the seventh embodiment shown in FIG. 39. [0107] Since it is evident that the calendar mechanism 1G is operated to be substantially similar to the calendar mechanism 1D, the calendar mechanism 1E, or the like, the detailed descriptions are omitted. claims
1. Calendar mechanism comprising: a date indicator (40); operating lever means (70) which includes a cam follower portion (75) for detecting a short month and which is pivotably supported on a timepiece support base plate; a date finger (33) which is able to cause a date advancement by engaging with the teeth (47) of the date indicator (40) and which supports the operating lever means (70) so that the center of rotation (B) of the date finger is moved by tilting the operating lever means (70); and a month cam (66) that the cam follower portion (75) of the operation lever means (70) tracks to detect the short month so as to change the position of the operating lever means (70). ) so that the date finger (33) causes an additional date advance equal to one day between the last day of the short month and the first day of a long month.
[2]
A calendar mechanism according to claim 1, wherein a date indicator driving wheel (30) is rotatably supported on the timepiece support base plate, and the center of rotation (B) of the date finger (33) is supported by the operating lever means (70) so as to be movable by tilting relative to the center of rotation (F1) of the date indicator driving wheel (30).
[3]
The calendar mechanism of claim 1 or 2, wherein, at the short month, the month cam (66) has a concave portion for the cam follower portion (75).
[4]
The calendar mechanism of claim 1 or 2, wherein, at the short month, the month cam (66) has a convex portion protruding for the cam follower portion (75).
[5]
5. Calendar mechanism according to one of claims 1 to 4, wherein the month cam (66) is divided equally at 12.
[6]
6. Calendar mechanism according to one of claims 1 to 4, wherein the month cam (66) is divided equally at 24.
[7]
The calendar mechanism according to one of claims 1 to 6, wherein the operation lever means (70) and the month cam (66) are configured so that the date finger (33) causes normal advancement. the date indicator (40) then the additional date advance of this date indicator (40), between the last day of the short month and the first day of the long month.
[8]
8. Calendar mechanism according to one of claims 1 to 6, wherein the operation lever means (70) and the month cam (66) are configured so that the date finger (33) causes the advancement additional date of the date indicator then a normal date progress of this date indicator (40), between the last day of the short month and the first day of the long month.
[9]
The calendar mechanism according to one of claims 1 to 8, wherein the operating lever means (70) consists of a single rigid lever or has the constitution of a link mechanism which includes a plurality of rigid levers.
[10]
Timepiece comprising the calendar mechanism according to one of claims 1 to 9.

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同族专利:

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公开号 | 公开日

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CN103176394A|2013-06-26|

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JP5819180B2|2015-11-18|

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CH705901A2|2013-06-28|

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CN103176394B|2016-12-28|

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JP2013134130A|2013-07-08|

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JP6636815B2|2016-02-09|2020-01-29|セイコーインスツル株式会社|Calendar mechanism, movement and clock|

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JP6837353B2|2017-03-01|2021-03-03|セイコーインスツル株式会社|Movement and watches|

法律状态:
2017-02-15| AZW| Rejection (application)|

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2020-05-29| AEN| Modification of the scope of the patent|Free format text: :LA DEMANDE DE BREVET A ETE REACTIVEE SELON LA DEMANDE DE POURSUITE DE LA PROCEDURE DU 17.02.2017 |

优先权:

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申请号 | 申请日 | 专利标题

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JP2011284158A|JP5819180B2|2011-12-26|2011-12-26|Calendar mechanism and watch having the same|

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