Retrograde display mechanism and timepiece comprising such a mechanism.

专利摘要:
The invention relates to a retrograde display mechanism (1) and a timepiece (7) comprising a time value drive wheel (70) which has a time value finger (72) and a first gear wheel. displaying (20) a time value, said time value being the date or the day. The first display wheel is driven once a day by said finger of the drive wheel, and also has a toothed portion and a portion forming a drive cam. The retrograde display mechanism includes an operating lever including a cam follower portion (61) and a toothed portion (64), said operating lever being engaged with said drive cam portion and a wheel fan-shaped member (40) having a toothed portion (41) and a display portion (42). The fan-shaped wheel rotates in response to tilting of the operating lever, and then quickly returns to its initial position each end of a month or a week. A jumper (50) immobilizes said fan-shaped wheel at each step and is released each end of the month by a release device.
公开号:CH705041B1
申请号:CH00350/12
申请日:2012-03-12
公开日:2017-07-31
发明作者:Hirano Kei
申请人:Seiko Instr Inc；
IPC主号:

专利说明:

Description The prior art of the invention 1. The technical field of the invention [0001] The present invention relates to a retrograde display mechanism and a timepiece having the same. 2. Description of the Prior Art [0002] In the timepiece, the retrograde display mechanism is used when the position of the tens (second digit) of a date is displayed by a display element of the type fan-shaped in a type in which a date is displayed by a large character (hereinafter type of "big date") or when a small hand (hereinafter "small day hand") in a fan-shaped or fan-shaped display area rotates along the range (JP-A-2007-218856 [atent reference 1] and JP-A-2006-170764 [atent reference 2] ).
In the retrograde display mechanism, once the fan-shaped element or fan-shaped is gradually rotated in one direction, when the end of the month is changed to the beginning of the month or when the end of the week is changed at the beginning of the week, the fan-shaped or fan-shaped element is quickly turned inversely to return to an initial position. Thus, when on the whole, the retrograde display mechanism includes a cam surface whose diameter increases along a direction of rotation as in a spiral, and is provided with a drive cam having a transition surface falling from a portion of maximum spiral diameter to a minimum diameter portion and an operating lever engaged with an engaged portion of the fan-shaped or fan-shaped member to be elastically supported against the drive cam through a cam follower on an end edge and progressively turns the fan-shaped or fan-shaped member in one direction across the engaging portion on the other side. In this case, the operating lever enlarges the position of the cam surface to transmit the position to the engaged portion of the fan-shaped or fan-shaped member.
However, because there is a limit for the accuracy of the cam surface because of the cost, the position of the fan-shaped or fan-shaped element is deflected in response to the deflection of the cam surface. a suitable position of the cam surface, the date positions and the small day hand in the type of big date are changed, there is a concern that the product may seem less attractive or that the high-level feeling or similar of the external appearance (pace) of the product may deteriorate. SUMMARY OF THE INVENTION [0005] According to the present invention, there is provided a retrograde display mechanism and a timepiece having the same which can minimize the display position deviation.
According to the present invention there is provided a retrograde display mechanism including: a retrograde display mechanism main body having a time value drive wheel which has a time value drive tooth portion and a time value finger that advance a time value including a date or a day and that turns once every day, a time value transmission wheel that has a time value transmission gear tooth portion and a drive cam portion which are rotated by a tooth each day by the value finger time of the time value drive wheel, a fan-shaped wheel operating lever which has a cam follower portion and a toothed portion of fan-shaped wheel operation which are resiliently biased against the drive cam portion of the time value transmission wheel to be engaged with the drive cam portion , and a fan-shaped wheel which has a fan-shaped toothed gear portion and a fan-shaped wheel display portion which meshes with the toothed wheel operation portion in a form of a fan. fan-shaped wheel operating lever to rotate in response to tilting of the fan-shaped wheel operating lever, wherein the fan-shaped wheel quickly rotates inversely to return to a position initial whenever the end of the month passes or the end of the week passes; a fan-shaped wheel-shaped jumper that jumps and stops the fan-shaped toothed portion of the fan-shaped wheel; and setting release means which releases an indexing position by the fan-shaped wheel jumper whenever the end of the month passes or the end of the week passes.
In the retrograde display mechanism, "the fan-shaped wheel jumper which jumps and stops the toothed portion of fan-shaped wheel fan-shaped wheel" is provided in addition to the body main retrograde display mechanism. Thus, since the fan-shaped wheel lug precisely adjusts the fan-shaped toothed portion of the fan-shaped wheel to be in a predetermined rotational position, even when there is a limit for the accuracy of the cam surface of the drive cam portion, the fan-shaped display portion may display a time value including a date or a day in a precise position in a state where the accuracy of display increases. Thus, there is no concern that the product appears less attractive and that the feeling of high level or similar external appearance (pace) of the product may deteriorate.
Here, typically, the cam surface of the drive cam portion moves the fan-shaped wheel operation lever to be in a temporary position, slightly before a final travel position. Movement of the temporary position to the final moving position is performed by the fan-shaped wheel jumper.
Yet, as far as the displacement of the temporary position to the final traveling position is effected by the fan-shaped wheel jumper, the cam surface of the drive cam portion, as desired, can move the lever of the cam. Fan-shaped wheel operation of the temporary position, slightly before the final moving position.
In addition, in the retrograde display mechanism, "the adjusting release means which releases an indexing position by the fan-shaped wheel jumper each time the end of the month or the end of the week pass "is provided in addition to the main body of retrograde display mechanism and the fan-shaped wheel jumper. Thus, even though the fan-shaped toothed portion of the fan-shaped wheel is adjusted by the fan-shaped wheel jumper, the indexing position by the fan-shaped wheel jumper is released by the setting release means whenever the end of the month or the end of the week passes. In this manner, the retrograde display operation "in which the fan-shaped wheel rotates rapidly inversely to return to the initial position each time the end of the month or the end of the week passes" does not interfere with the saltire.
[0010] That is, in the retrograde display mechanism, "the fan-shaped wheel-shaped jumper that jumps and stops the toothed portion of the fan-shaped wheel of the shaped wheel. fan and setting release means which releases an indexing position by the fan-shaped wheel jumper whenever the end of the month or the end of the week passes "are provided in addition to the main body of the rotary mechanism. retrograde display. Thus, the advantage of the retrograde display mechanism that the large display can be realized in a narrow area using the fan-shaped display and the resolution of the problem of the display position deviation inevitably accompanied with the mechanism Conventional retrograde display (demerit resolution of the retrograde display) can be performed at the same time.
In a typical retrograde display mechanism according to the invention, the time value includes a date, the time value drive wheel includes a date indicator drive wheel, the time value transmission wheel. includes a first date indicator that has a first date plate part showing the units (first digit) position of a date, the fan-shaped wheel operation lever includes a second indicator operation lever of date, the fan-shaped wheel includes a second date indicator displaying the position of tens of a date, the fan-shaped toothed tooth portion includes a second date display wheel, and the jumper of fan-shaped wheel includes a second date jumper. In this case, the retrograde display mechanism includes: a retrograde display mechanism main body having the date indicator drive wheel which has a date indicator drive wheel gear portion and a finger of date and turn once every day, the first date indicator which has a first date indicator tooth portion and a drive cam part that are turned by a tooth each day by the wheel date finger of date indicator drive, the second date indicator operating lever that has a cam follower portion and a second date indicator operating portion that are resiliently biased against the drive cam portion of the first date indicator to be engaged with the drive cam part, and the second date indicator which has a second date display wheel and a second da plate part te that meshing with the second date operation operation date indicator of the second date indicator operating lever to rotate in response to the tilting of the operating lever, in which the second date indicator turns quickly inversely for return to an initial position each time the end of the month passes; the second date jumper that jumps and stops the second date display wheel of the second date indicator; and setting release means which releases an indexing position by the second date jumper each time the end of the month passes.
In this case, the retrograde display mechanism displays the position of the tens (second digit) of a date in a large date type manner and performs the retrograde display where the display returns to the initial position when the end of the month is changed at the beginning of the month. In the big-date type retrograde display mechanism, the second date jumper like the fan-shaped wheel-shaped jumper sets the second date display wheel to be in a precise position and displays the position of the tens (second number) of a date in a specific position. Thus, it does not occur that, because of the position deviation, the product may appear less attractive and that the high-level or similar feeling of the external appearance (pace) of the product may deteriorate. Moreover, in the retrograde display mechanism, whenever the setting release means passes the end of the month (when the end of the month is changed at the beginning of the month), the indexing position by the second date jumper is released. In this way, one does not interfere with a predetermined retrograde operation where one returns to the initial position each time the end of the month passes.
In this type of retrograde display mechanism, typically, the setting release means releases the indexing position by the second date jumper each time the first date indicator rotates by a distance (an angle). corresponding to a day.
In this case, even if the first date indicator turns once to pass the end of the month (when the end of the month is changed at the beginning of the month), the first date indicator rotates a distance corresponding to a day. Thus, the indexing position by the second date jumper can be released reliably. However, as long as the indexing position by the second date jumper can be released by the setting release means when the end of the month is changed at the beginning of the month, the release may not be performed each day.
In addition, the retrograde display mechanism described above, for example, includes a first date jumper that jumps and stops the tooth portion of the first date indicator, wherein the first date jumper moves the second jumper of date for releasing the setting of the second date display wheel set by the second date jumper when the first date indicator rotates by a distance corresponding to a day to pass a tooth of the first date indicator tooth portion .
In this case, each time the first date indicator rotates by a distance corresponding to one day, the first date jumper jumps in response to the rotation of the first date indicator to pass a tooth of the toothed portion of first date indicator. In response to the rotation of the first date jumper during the jump, the first date jumper turns the second date jumper to release the setting of the second date indicator set by the second date jumper. In this manner, "the setting release means releases the indexing position by the second date jumper each time the first date indicator rotates by a distance corresponding to a day", which may cause a desired operation. That is, in this case, since the second date jumper is moved in response to the movement of the first date jumper, control of that date is easily and directly performed. In addition, in this case, even if the first date jumper is engaged directly with the second date jumper, a link element may be interposed between the first and second date jumpers, and the first and second date jumpers may be engaged with each other by the link element.
Instead, in the retrograde display mechanism described above, for example, the second date jumper may include a first date indicator engagement portion engaged with the tooth portion of the first date indicator. , and the second date jumper, when the first date indicator rotates a distance corresponding to a day, can be moved by the engagement portion of the first date indicator to release the setting of the second display wheel of dated.
In this case, when the first date indicator rotates by a distance corresponding to one day, the first date indicator engagement portion of the second date jumper is moved and the second date jumper releases the setting of the second date display wheel. In this manner, "the setting release means releases the indexing position by the second date jumper each time the first date indicator rotates by a distance corresponding to a day", which may cause a desired operation. In this case, the setting can be released by a single element (second date jumper including the first date indicator engagement portion). Therefore, the occupation space can be minimized.
In another retrograde display mechanism according to the invention, the time value includes a day, the time value drive wheel includes a date indicator drive wheel, the time value transmission wheel. includes a date indicator transmission wheel, the fan-shaped wheel operating lever takes the form of a hammer, the fan-shaped wheel that of an integral gear wheel and includes an indicator of In the day, the integral gear toothed portion includes a toothed day indicator portion, and the fan-shaped wheel shank includes a small day shank. In this case, the retrograde display mechanism includes: a retrograde display mechanism main body having the date indicator drive wheel which has a date indicator drive wheel gear portion and a finger of day and turns once every day, a day transmission wheel that has a toothed portion of a day transmission wheel and a drive cam portion that are turned by a tooth every day by the wheel's day finger date indicator drive, the hammer that has a cam follower portion and a day indicator operation tooth portion that is resiliently biased against the drive cam portion of the day transmission wheel to be engaged with the drive cam part, and the day indicator which has a toothed day indicator portion and a small day hand that mesh with the toothed portion hammer day indicator to rotate in response to tilting of the hammer, wherein the day indicator rapidly rotates inversely to return to an initial position whenever the end of the week passes; a small day jumper that jumps and stops the toothed day indicator portion of the day indicator; and setting release means which releases an indexing position by the second day jumper each time the end of the week passes.
In this case, in the retrograde display mechanism, a fan-shaped day display (for example, from Sunday to Saturday [however, other arrangements may be used, for example, from Saturday to Sunday ]), is done using the small day hand, and when the end of the week passes, that is, when the end of the week (for example, Saturday) is changed to the beginning of the week (by example, Sunday), the retrograde display in which the display returns to the initial position is performed. In the retrograde daylight type small-scale display mechanism, the daytime jumper as the integral gearwheel adjusts the day indicator toothed portion of the day indicator to be in a precise position and displays a day in a precise position. Thus, it does not occur that, because of the position deviation, the product may appear less attractive and that the high-level or similar feeling of the external appearance (pace) of the product may deteriorate. In addition, in the retrograde display mechanism, whenever the setting release means passes the end of the month, the indexing position by the daytime jumper is released. In this way, one does not interfere with a predetermined retrograde operation where one returns to the initial position each time the end of the week passes.
In this type of retrograde display mechanism, typically, the adjustment release means releases the indexing position by the daytime jumper each time the day transmission wheel rotates by a distance corresponding to a day.
In this case, even when the day transmission wheel rotates according to the distance corresponding to the seven days to change from the end of the week to the beginning of the week, the day transmission wheel rotates the distance corresponding to a day. Thus, the indexing position by the daytime jumper can be reliably released by the setting release means. Yet, as long as the indexing position by the daytime jumper can be released by the setting release means when the end of the week is changed at the beginning of the week, the release may not be performed each day.
In addition, the retrograde display mechanism described above, for example, includes a daytime jumper that jumps and stops the toothed portion of day transmission wheel, wherein the daytime jumper moves the small jumper of day to release the adjustment of the day indicator tooth portion set by the daytime running gear when the day transmission wheel rotates by the distance corresponding to a day to pass a tooth of the day transmission wheel tooth portion .
In this case, each time the day transmission wheel rotates by the distance corresponding to one day, the jumper jumps in response to the rotation of the day transmission wheel to pass a tooth of the toothed portion. day transmission wheel. In response to the rotation of the day jumper during the jump, the daytime jumper turns the daytime jumper to release the setting of the day indicator gear portion set by the daytime jumper. In this way, "the setting release means releases the indexing position by the daytime jumper whenever the day transmission wheel rotates by the distance corresponding to a day", which may cause a desired operation. That is to say, in this case, since the little jumper day is moved in response to the movement of the jumper day, the control of it is done easily and directly. In addition, in this case, even when the daytime jumper is engaged directly with the daytime jumper, a link element can be interposed between the daytime jumper and the daytime jumper, and the daytime jumper and the small one day jumper can be engaged with each other by the link element.
Instead, in the retrograde display mechanism described above, for example, the daytime jumper includes a day transmission wheel engaging portion engaged with the small day indicator tooth portion, and the daytime jumper, when the day transmission gear tooth portion rotates by the distance corresponding to a day, is moved by the day transmission wheel engaging portion to release the adjustment of the toothed portion of day indicator.
In this case, each time the toothed portion of the day transmission wheel rotates by the distance corresponding to one day, the day transmission wheel engagement portion of the daytime jumper is moved and the small jumper of day releases the adjustment of the day indicator tooth portion. "The setting release means releases the indexing position by the daytime jumper each time the day transmission wheel rotates by the distance corresponding to a day", which may cause a desired operation. In this case, the setting can be released by a single element (daytime jumper including the day transmission wheel engaging portion). Therefore, the occupation space can be minimized.
[0027] A timepiece according to the present invention includes the retrograde display mechanism described above. The timepiece can be a mechanical timepiece or a similar electronic timepiece.
Brief description of the drawings [0028]
Fig. 1 is a plan diagram illustrating a timepiece portion according to a preferred embodiment of the present invention having a retrograde large date display mechanism such as a retrograde display mechanism according to a preferred embodiment of the present invention. invention (in a state where a second date indicator is excluded).
Fig. 2 is a plan diagram of the timepiece illustrated in FIG. 1 illustrating a state where a second date indicator overlaps.
Fig. 3 is a plan diagram illustrating the external appearance of the timepiece illustrated in FIG. 1.
Fig. 4 is a plan diagram illustrating a modification of the retrograde large date display mechanism such as the retrograde display mechanism of the timepiece illustrated in FIG. 1.
Fig. 5 is a plan diagram illustrating a structure of a retrograde day display mechanism as another modification of the retrograde display mechanism of the timepiece illustrated in FIG. 1.
Fig. 6 is a plan diagram illustrating a timepiece portion having the retrograde day display mechanism illustrated in FIG. 5 as a retrograde display mechanism.
Fig. 7 is a plan diagram illustrating a modification of the retrograde day display mechanism such as the retrograde display mechanism illustrated in FIG. 5.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0029] Preferred embodiments of the present invention will be described with reference to the accompanying drawings illustrating preferred examples.
[Embodiment] [0030] Before specifically describing a retrograde display mechanism according to a preferred embodiment of the present invention, the exterior appearance of a timepiece 7 according to the preferred embodiment of the present invention. invention having a retrograde large date display mechanism 1 as the retrograde display mechanism will be described with reference to FIG. 3.
The timepiece 7 is a wristwatch and includes an hour hand 11, a minute hand 12, and a second hand 13 which rotate about a central axis line C and a crown 15 at the projecting end of a winding stem 14. The timepiece 7 also includes a date window 17 at a position at approximately 12 o'clock of a dial 16.
In the date window 17, a first date character BD1 ("1" in the same drawing) indicating the first digit or position of the units of a date and a second date character BD2 ("0" in the same drawing) indicating the second digit or position tens of a date are displayed.
In the timepiece 7, the retrograde large date display mechanism 1 has a structure illustrated in FIG. 1. In the Retrograde Large Date Display Mechanism 1, "a time value" is "a date". The retrograde display mechanism 1 includes a large date display mechanism in which the retrograde display of the tens position of a date is made, i.e., the large date display mechanism. retrograde.
The retrograde large date display mechanism 1 as the retrograde display mechanism includes a first date indicator 20 such as a time value transmission wheel associated with the first digit (unit position) of a date and a date. second date indicator 40 (see Figs. 1 and 2) as a fan-shaped wheel associated with the second digit (tens position).
As seen in FIG. 1, the first date indicator 20 includes a main body portion of first annular date indicator 22 that has a first annular date indicator display surface portion 21, a first date indicator tooth portion 24 that has 31 inner teeth 23 formed in the inner peripheral edge on the depth side (near the back side of box) of the first date indicator main body portion 22, and a drive cam portion 30 which is formed on the rear surface side of an annular plate portion 25 of the first date indicator main body portion 22 and the outer peripheral side of the first date indicator tooth portion 24.
As seen in FIG. 1, like the first date character BD1, nine dates from "1" to "9" corresponding to "01st" to "09th" dates, ten dates from "0" to "9" corresponding to "10th" to "19th" dates, ten dates from "0" to "9" corresponding to the "20th" to "29th" dates, and two dates of "0" and "1" corresponding to the "30th" to "31st" dates are attached to the first part of date display surface 21.
The drive cam portion 30 includes a first cam-type portion 31 forming a minimum arc diameter and setting the "01er" to "09e" dates, a second cam-like portion 32 forming a second minimum arc diameter and setting the "10th" to "19th" dates, a third cam-type portion 33 forming a third minimum arc diameter and setting the "20th" to "29th" dates, and a fourth cam-type portion 34 forming a maximum arc diameter and setting the "30th" to "31st" dates. The extensions of the second cam-like portion 32 and the third cam-shaped portion 33 in the circumferential direction (center angle when viewed from center line C) are the same in practice and five times extending the fourth cam-type portion 34 in the peripheral direction. The extension of the first type of cam (center angle when viewed from center line C) 31 is slightly smaller (approximately 1/10) than the extensions of the second cam-type part. 32 and the third cam-like portion 33 in the circumferential direction (center angle when viewed from centerline line C). The first and second cam-like portions 31 and 32 are connected to an inclined connecting surface 35 whose diameter increases progressively. The second and third cam-like portions 32 and 33 are connected to an inclined connecting surface 36 whose diameter increases progressively. The third and fourth cam-type portions 33 and 34 are connected to an inclined connection surface 37 whose diameter increases progressively. In contrast, to perform the retrograde display, the fourth cam-like portion 34 and the first cam-like portion 31 are connected to a transition surface 38 which extends approximately in the radial direction so that diameters of these fall abruptly from the maximum diameter to the minimum diameter to return to the initial position. However, as long as the transition in the radial direction is permitted, it may be that there is no surface in a partial transition surface or in the entire transition surface 38.
The timepiece 7 includes a date indicator drive wheel 70 such as a time value drive wheel, a first date jumper 26, and a first spring jumper spring of date 29. The wheel date indicator drive 70 includes a date indicator tooth portion 71 and a date finger 72. The date indicator tooth portion 71 meshes with an hour indicator (not shown) through a transmitting wheel 73 to rotate in a direction A1. The date finger 72 rotates once every day in a clockwise direction A1 in FIG. 1 in response to the rotation of the hour indicator (not shown) in a direction C1. During rotation in the A1 direction, the date finger 72 is engaged with the teeth 23 of the first date indicator tooth portion 24 to turn the first date indicator tooth portion 24 in the C1 direction by a tooth.
The first date jumper 26 at which the first spring jumper spring 29 applies the spring load in a direction D1 is mounted on a support substrate 19 such as a main plate to rotate about a line of center axis D in the directions D1 and D2, and includes a jumper main body 27 having a lever shape, a jump claw and stop portion 28 which skips and stops the first date indicator tooth portion 24, and a engagement protrusion 27a which is located on the rear surface side of the claw portion 28. The first date jumper 26 rotates in the direction D2 to perform the jumping operation when the date release through the clutch wheel. date indicator drive 70, i.e., the rotation operation of the first date indicator tooth portion 24 in the C1 direction advances. When the date release ends, the first date jumper 26 rotates in the direction D1 to set the first date indicator tooth portion 24 to an intermediate rotational position and adjusts the rotation of the first date indicator tooth portion 24 to the action of the first jump spring 29 until the next release.
The retrograde large date display mechanism 1 as the retrograde display mechanism includes a second date indicator operating lever 60 as a fan-shaped wheel operating lever which connects the first indicator of date 20 and the second date indicator 40. The second date indicator operating lever 60 is rotatable about an axis line of center E in the directions E1 and E2 and receives the load of a spring from operating lever 69 in the direction E1.
The second date indicator operating lever 60 approximately forms an L shape in the assembly and includes two arm portions 61 and 62 forming an "L" shape. An arm portion 61 of the second date indicator operating lever 60 functions as a cam follower that is resiliently biased against the drive cam portion 30 of the first date indicator 20 in a front end portion 63 under the action of the operating lever spring 69 to be engaged with the drive cam portion 30. The other arm portion 62 of the second date indicator operating lever 60 includes a rake 64 of the second indicator of operation. date as a fan-shaped wheel operation tooth portion in a front end portion.
On the "01st" to "09th" dates of each month, the front end portion 63 of the cam follower 61 of the second date indicator operating lever 60 is engaged in practice with the first type portion. cam arc 31 of the driving cam 30 of the first date indicator 20 under the action of the operating lever spring 69, the lever portion or arm portion 62 of the operating lever of the second date indicator 60 is in a rotational position rotating in the direction E1 in a maximum manner, and the rake 64 of the second date indicator at the front end of the arm portion 62, as illustrated in FIG. 1, is engaged with a toothed portion corresponding to the second date indicator 40 by a tooth 64a which is located on an end edge side in the direction E2.
On the "10th" to "19th" dates of each month, the front end portion 63 of the cam follower 61 of the second date indicator operating lever 60 is engaged in practice with the second type portion. cam arc 32 of the drive cam 30, the lever portion or arm portion 62 of the second date indicator operating lever 60 is in a rotational position rotating in the direction E2 by a step, and the second date indicator rake 64 at the forward end of the arm portion 62 further rotates in the direction E2 somewhat from a position shown in FIG. 1 to be engaged with a toothed portion corresponding to the second date indicator 40 by a tooth 64b which is located at an area near the end edge in the direction E2.
In addition, on the "20th" to "29th" dates of each month, the front end portion 63 of the cam follower 61 of the second date indicator operating lever 60 is engaged in practice with the third cam-type portion 33 of the drive cam 30, the lever portion or arm portion 62 of the second date indicator operating lever 60 is in a rotational position rotating further in the E2 direction , and the second date indicator rake 64 at the forward end of the arm portion 62 rotates further in the direction E2 to be engaged with a tooth portion corresponding to the second date indicator 40 by a tooth 64c which is located in a area close enough to the end edge in the E1 direction.
In addition, on the "30th" to "31st" dates of each month, the front end portion 63 of the cam follower 61 of the second date indicator operating lever 60 is engaged in practice with the fourth cam-like portion 34 of the drive cam 30, the lever portion or arm portion 62 of the second date indicator operating lever 60 is in a rotational position rotating in the direction E2 of maximally, and the rake 64 of the second date indicator at the front end of the arm portion 62 rotates in the direction E2 in a maximum manner to be engaged with a toothed portion corresponding to the second date indicator 40 by a tooth 64d which is located on the end edge side in the E1 direction.
The second date indicator 40, as a movable having the fan-shaped wheel, includes a second date indicator toothed portion 41 as a fan-shaped toothed portion, as illustrated in FIG. 1, and also includes a second date plate portion 42 as a display portion, as shown in FIG. 2. The second date plate portion 42 is attached to the second date indicator tooth portion 41 by caulking or the like. The range of the second date indicator 40 in which the toothed portion of the second date indicator 41 acts as a toothed portion is a fan-shaped range in which teeth are arranged in the form of an arc in FIG. 1. The second date indicator tooth portion 41 functions as a fan-shaped toothed portion in practice.
As illustrated in FIG. 2, the second date plate portion 42 includes a second date display surface portion 43. At the second date display surface portion 43, as the second date character BD2, a date character "0 Indicating the position of the tens (second digit) of a date between the "01st" to "09th" dates, a date character "1" indicating the position of the tens (second digit) of a date between the "10th" at "19th" dates, a date character "2" indicating the position of the tens (second digit) of a date between the "20th" to "29th" dates, and a date character "3" indicating the position of the tens (second digit) of a date between the "30th" and "31st" dates are attached. On the right side of each date character BD2, a window 44 through which the position of the units (first digit) of a date can be visually recognized is provided. A window window frame 44 is located outside the date window 17 of the dial 16 with the exception of the left frame (left edge).
In addition, in the example illustrated in FIG. 2, the second date plate portion 42 has a circular plate shape. However, in fig. 2, a portion of the practical second part of the date plate portion 42 is a fan-shaped area between imaginary lines 42a and 42b that extend radically. Thus, the second date plate portion 42 may be this type of fan type plate. For example, when the large date display is made in the other position (e.g., 6 o'clock position) instead of the 12 o'clock position, the left bottom area in FIG. 2 is an optional area that can be used to display the "O", "1", "2", and "3" characters of the tens position (second digit) in a direction corresponding to the display position.
Referring to FIG. 1 again, the second date jumper 50, to which the second jumper spring 59 applies the spring load, is attached to a main plate 19 to rotate about an axis line of center F in directions F1 and F2 , and includes a second date jumper main body 51 as a lever shape, a jump and stop claw portion 52 which is formed on one side of the front end of the second date jumper main body 51 and performs second date indicator claw wheel portion jump operation of the second date indicator tooth portion 41, and a lock arm portion 53 extending from the peripheral edge portion of the line of center axis F on a side approximately opposite the second main body of date jumper 51. The second date indicator claw wheel portion 45 includes a plurality of claw portions 46. The range of the second indicator wherein the second date indicator claw wheel portion 45 acts as the claw wheel portion is a fan-shaped area in which the claws 46 are arcuate-shaped in FIG. 1. The second date indicator claw wheel portion 45 functions as a fan-type claw wheel in practice. In the example, the teeth, which are arranged in an arc-like form, of the toothed portion of the second date indicator 41 as the fan-like toothed portion (fan-shaped toothed portion) and the claw portions 46, which are arranged in arc-like form, of the second date indicator claw wheel part 45 as the fan-shaped claw wheel (fan-shaped claw wheel) are approximately positioned on the same circle, but do not may not be on the same circle as long as they can move together.
The locking arm portion 53 includes an engagement protrusion 54 at an area opposite the engagement protrusion 27a of the first date jumper 26 in the vicinity of the leading end. When the first date jumper 26 rotates in the direction D2 to perform the jump operation, the engagement protrusion 54 of the second date jumper 50 is engaged with the engagement protrusion 27a of the first date jumper 26 to rotate into the direction F2 because of the engagement protrusion 27a, which releases the adjustment of the second date indicator tooth portion 41 (more specifically, the second date indicator claw wheel portion 45). That is, in the retrograde large date display mechanism 1 such as the retrograde display mechanism, it is permissible that, each time the first date jumper 26 releases the adjustment of the first toothed portion date indicator 24 in response to the release, the first date jumper 26 releases the setting of the second date indicator tooth portion 41 set by the second date jumper 50 during the release and thus the second date indicator tooth portion 41 turns freely.
In addition, the first date jumper 26 does not interfere with the operation of the second date jumper 50 when the first date jumper 26 is set in the toothed portion of the first date indicator 24. that is, the second date jumper 50 performs the jump and stop operation for the rotation of the second date indicator tooth portion 41 due to rake 64 of second date indicator of the second indicator operation lever. date 60 with the exception of the situation when the first date jumper 26 performs the jump operation of the first date indicator tooth portion 24.
In this example, a setting release means which releases the indexing position by the second date jumper 50 as the fan-shaped wheel jumper when the end of the month passes includes the first date jumper 26 That is, the first date jumper 26 as a engagement means is engaged with the engagement protrusion 54 of the second date jumper 50 by engagement protrusion 27a thereof. In this case, the setting release means releases the indexing position by the second date jumper 50 whenever the first date indicator 20 rotates by a distance corresponding to a day. Thus, even if the end of the month passes (when the end of the month is shifted at the beginning of the month), the indexing position by the second date jumper 50 is released each time the first date indicator 20 turns the distance. corresponding to a day.
The operation of the retrograde large date display mechanism 1 of the timepiece 7 configured as above will be described.
For example, as illustrated in FIG. 3, when the date window 17 of the dial 16 displays the "01st" date, the first date indicator 20 is approximately in a rotational position in the direction C1 as illustrated in FIG. 1, the right half box in the date window 17 (indicated by the imaginary line in Fig. 1) displays "1" at the position of the units (first digit) of a date.
In this state, the leading end portion 63 of the arm portion 61 forming the cam follower of the second date indicator operating lever 60 contacts the first cam-like portion 31 of the cam. Conveniently near the transition surface portion 38 of the drive cam portion 30. The ratchet 64 of the second date indicator at the front end of the arm portion 62 of the second indicator operation lever. Date 60 meshes with the tooth portion of second date indicator 41 of the second date indicator 40 by tooth 64a. Thus, in the second date display surface portion 43 of the second date plate portion 42 of the second date indicator 40, "0" among the date characters BD2 of the position of the tens in FIG. 2 is positioned in the left half area of the date window 17. Therefore, the right side window 44 displaying "O" is positioned in the date window 17, the left side frame of the window 44 extends in the center of the date window 17, and "1" as the date character BD1 of the first date indicator 20 is set in the window 44 of the date window 17.
In the retrograde large date display mechanism 1 of the timepiece 7, the date finger 72 of the date indicator drive wheel 70 is engaged with the teeth 23 of the toothed portion of first date indicator 24 of the first date indicator 20. In most time periods other than the relatively short period of time when turning the toothed portion 24, the jump and stop sign portion 28 of the first date jumper 26 is inserted between the teeth 23 and 23 adjacent to the first date indicator tooth portion 24 of the first date indicator 20 to set the first date indicator 20 completely. Thus, because the first date indicator 20 is held in the off state in a predetermined rotational position in the direction C1, the date character BD1 of the position of the units (first digit) in the first surface portion The date display 21 of the first date indicator 20 can be precisely positioned in a predetermined position of the right half area of the date window 17. Therefore, an appropriate display of the date character BD1 can be performed.
Especially, in the retrograde large date display mechanism 1 of the timepiece 7, in most periods of time in a day other than the relatively short period of time in which the date finger 72 of the date indicator drive wheel 70 is engaged with the teeth 23 of the first date indicator tooth portion 24 of the first date indicator 20 to rotate the toothed portion 24, the jump claw and stop portion 28 of the The first date jumper 26 is inserted between the teeth 23 and 23 adjacent to the first date indicator tooth portion 24 of the first date indicator 20 and the jump and stop claw portion 52 of the second date jumper 50 is also inserted between the claw portions 46 and 46 adjacent to the second date indicator claw wheel portion 45 of the second date indicator tooth portion 41 of the second date indicator 40 to adjust the second date indicator tell me 40 date indicator completely. Therefore, the second date indicator 40 in addition to the first date indicator 20 is held in the off state in a predetermined position in the direction C1. Thus, the date character BD2 of the position of the tens (second digit) of the second date display surface portion 43 of the second date indicator 40 can be precisely positioned in a predetermined position of the left half area in the date window 17 to properly display the date character BD2. In addition, the window 44 which is located on the right side of the date character BD2 indicating the position of the tens 10 (second digit) of the second date display surface portion 43 of the second date indicator 40 can be positioned precisely in a predetermined position of the right half-area in the date window 17, i.e., in a position including the first date character BD1 in the center, which allows an appropriate display of the date character BD1.
Here, the forced adjustment, which is set by the second date jumper 50, of the rotational position of the toothed portion of the second date indicator 41 in the direction C1 is stronger than the forced pressing of the end. before 63 of the arm portion 61, which forms the cam follower of the second date indicator operating lever 60, against the arc-like cam portion 31. For example, even when the positional accuracy of the peripheral surface arc type of the first cam-type portion 31 is low or when the positional accuracies of the arm portions 61 and 62 of the operating lever 60 or the like are somewhat low, the second date indicator 40 may be precisely positioned without any influence in practice.
More specifically, the respective cam portions of the drive cam portion 30, i.e., the arc-like cam portions 31, 32, 33, and 34 are formed slightly low (the distance from centerline line C is slightly smaller) so that when the leading end portion 63 of the arm portion 61 forming the cam follower of the second date indicator operating lever 60 between in contact with the arcuate cam portions 31, 32, 33, and 34, the rotational position in the direction C1 in which the toothed portion of the second date indicator 41 is positioned (i.e. rotational position in the direction C1 in which the second date indicator claw wheel part 45, which is integrally provided with the toothed portion of second date indicator 41, is positioned) is a temporal rotation position slightly before a position of rotation in laq the second date indicator claw wheel portion 45 should be positioned. Thus, when the jump and stop claw portion 52 of the second date jumper 50 is supported between adjacent claw portions 46 and 46 of the claw wheel portion 45 of the second date indicator tooth portion 41 under the second spring jumper spring 59 action to adjust the second date indicator claw wheel portion 45 completely, the second date indicator claw wheel portion 45 rotates slightly but more in the direction C1. In response thereto, the operating lever 60 rotates slightly in the direction E2 against the operating lever spring 69. In this manner, the leading end portion 63 of the arm portion 61 forming the cam follower of the operating lever 60 moves slightly away from the corresponding cam surfaces, i.e., the arc-like cam portions 31, 32, 33, and 34 form a small gap 65. Thus, in the mechanism of a large retrograde date display 1, even when the positional accuracies of the arcuate peripheral surfaces of the arc-type cam parts 31, 32, 33, and 34 are low or when the positional accuracies of the arm portions 61 and 62 operating lever 60 or the like are low somewhat, the second date indicator 40 can be accurately positioned without any influence in practice.
However, for example, in a case where the arm portion 61 is formed to turn clockwise from a reference position relative to the arm portion 62, the arm portion 61 is prevented. passing the reference position relative to the arm portion 62 and rotating relatively counterclockwise, and the relative rotation is performed clockwise against a relatively strong spring, the Arc-like cam portions 31, 32, 33, and 34 may be positioned slightly higher than the original position.
When the end of the day approaches, the date finger 72 of the date indicator drive wheel 70 is engaged with the teeth 23 adjacent to the tooth portion of the first date indicator 24 to turn the portion. toothed first date indicator 24 by a tooth in direction C1. In this manner, the first date jumper 26 performs the skipping and stopping operation of the teeth 23 of the first date indicator tooth portion 24 and is inserted between the next adjacent teeth 23 and 23 to set the first date indicator 20 in a position where it rotates by a tooth in the direction C1. When the first date jumper 26 performs the jump operation, the second date jumper 50 is engaged with the engagement protrusion 27a of the first date jumper 26 by the engagement protrusion 54 to be temporarily in a release position. setting and to return to a setting position immediately after that. Thus, the second date indicator 40 is maintained at the same position in practice. When the second date jumper 50 again begins adjusting the second date indicator claw wheel portion 45, the second date indicator 40 is re-positioned in the original accurate position.
The operation described above can continue until the "09th" date. When the "09th" date is changed to the "10th" date, the second date indicator operation lever 60 rotates in the direction E2 with the rotation of the first date indicator 20 in the direction C1 and the same operation is performed except that the second date indicator 40 rotates in the direction C1. After, until the end of the month, the operation described above is repeated.
When the end of the month is changed at the beginning of the month, the first date jumper 26 rotates in the direction D2 with the advancement of the date release of the first date indicator 20. In this way, the second jumper of date 50 is engaged with the engagement protrusion 27a of the first date jumper 26 by engagement protrusion 54 to be in the setting release position where rotation of the tooth portion of second date indicator 45 is enabled and for be in a state where free rotation of the second date indicator 40 is allowed. At this time, the front end portion 63 of the arm portion 61 of the second date indicator operating lever 60 reaches the surface portion. transition point 38 of the drive cam portion 30 with the rotation of the first date indicator 20 in the direction C1, falls to the first cam-like portion 24 under the action of the operating lever spring 69, and rapidly rotates the toothed portion of second date indicator 41 in a direction C2 through the rake 64 of the second date indicator of the operating lever 60. In this manner, the retrograde operation is performed, in which the second date indicator 40 rotates rapidly in the direction C2 (counterclockwise) opposite to the direction C1 and returns from the rotational position displaying the date character "3" of the position of the tens (second digit) in the date window 17 (rotational position illustrated in FIG. 2) to the rotational position displaying the date character "0" of the position of the tens (second digit) in the date window 17 (rotational position shown in Fig. 3).
That is to say, in the retrograde large date display mechanism 1 of the timepiece 7, on one side, the second date jumper 50 performs the jump and stop operation of the claw wheel portion 45 integrally provided with the tooth portion 41 of the second date indicator 40, which can display the date character BD2 in a precise position. On the other hand, when the end of the month is changed at the beginning of the month, the first date jumper 26 releases the setting, which is set by the second date jumper 50, from the tooth portion of the second date indicator 41 ( the second claw wheel portion 45) of the second date indicator 40 through the engagement or interference between the engagement protrusion 27a and 54. Thus, it is permissible for the second date indicator 40 to rotate rapidly in the C2 direction to return to the initial position, which allows a predetermined retrograde operation.
That is to say, in the retrograde large date display mechanism 1 of the timepiece 7, the first and second date jumpers 26 and 50 can be engaged with engagement protrusions 27a. and 54. Thus, the advantage of the retrograde display and the advantage of the adjustment (positioning) set by the jumpers are obtained at the same time.
[0066] Above, the example in which the setting of the second indicator 40 set by the second date jumper 50 is released by the first date jumper 26 has been described. Instead, for example, as shown in FIG. 4, the setting of the second date indicator 40 set by the second date jumper can be released directly not by the first date jumper, but by the first date indicator 20 (the setting release means can include the first indicator of date 20).
FIG. 4 illustrates a timepiece portion 7A having a retrograde large date display mechanism 1A as a retrograde display mechanism according to a modification of the present invention. The retrograde large date display mechanism 1A shown in FIG. 4 has the same structure as that of the retrograde large date display mechanism 1 shown in FIG. 1 except that the structures (forms, arrangement, and relationship) of a first date jumper 26A and a second date jumper 50A are different from the structures (shapes, arrangement, and link relationship) of the first jumper of date 26 and the second date jumper 50 of the retrograde large date display mechanism 1 shown in FIG. 1. In the retrograde large date display mechanism 1A shown in FIG. 4, the same reference signs are given practically to the same components as those of the retrograde large date display mechanism 1 shown in FIG. 1. Components that have different points but correspond to the components of the retrograde large date display mechanism 1 shown in fig. 1, A is added after the same reference sign.
The first date jumper 26A which is rotatable about a center line DA in the directions D1 and D2 includes a main body portion of a jumper 27A in the form of a lever and a jump claw portion and stopping 28A which performs the skipping and stopping operation of the first date indicator tooth portion 24 and receives the spring load of the first date jumper spring (not shown) in the direction D1.
In short, the first date jumper 26A is different from the first date jumper 26 shown in FIG. 1 and has approximately the same structure as that of the first date jumper 26 in FIG. 1 except that an engagement portion corresponding to engagement protrusion 27a is neglected.
[0070] The second 50A date jumper which can rotate around a center line of center FA in the F1 and F2 directions includes a jump and stop claw portion 52A on one side of the front end portion of the center line. an arm portion 51A forming the second date jumper main body and an engaged claw portion 55 which is engaged with the teeth 23 of the first date indicator tooth portion 24 of the first date indicator 20 to the portion of front end of the other arm portion 53A extending in a different direction from the arm portion 51 A. The second date jumper 50A is configured so that the engaged claw portion 55 of the arm portion 53A can be directly engaged with the teeth 23 of the tooth portion of the first date indicator 24 of the first date indicator 20. Thus, the arm portion 53A is in a position where it overlaps the main body of the jumper 27A of the first date jumper 26A in the thickness direction of the timepiece 7A (when viewed in the thickness direction, there is a gap therebetween) in the engaged claw portion 55 and in the vicinity thereof. Here, a center of rotation DA of the first date jumper 26A is preferably positioned in the vicinity of the circle adjacent to the tooth portion of the first date indicator 24. In addition, the first date jumper 26A and the second date jumper 50A can be in positions distant from each other when viewed in the peripheral direction of the timepiece 7A and, in this case, may not be in positions distant from each other in the direction of 'thickness. In the retrograde large date display mechanism 1A, the second date jumper 50A performs the skipping and stopping operation of the second date indicator claw wheel portion 45 which is integrally provided with the second toothed portion. date indicator 41 of the second date indicator 40 to set the second date indicator claw wheel part 45. Thus, the date character BD2 of the position of the tens (second digit) of the big date can also be displayed precisely in a predetermined position of the date window 17 regardless of errors in the shape of the drive cam portion (not shown), the shape of the cam follower portion (not shown) of the second operation lever date indicator (not shown), and the like.
In the retrograde large date display mechanism 1A having the first date jumper 26A and the second date jumper 50A, when the end of the day approaches, the date finger 72 of the training wheel d Date indicator 70 is engaged with the adjacent teeth 23 of the first date indicator tooth portion 24 to turn the first date indicator tooth portion 24 by a tooth in the direction C1. At this time, in response to the rotation of the first date indicator tooth portion 24 of the first date indicator 20 in the C1 direction, on one side, the first date jumper 26A performs the tooth jump operation 23 of the first date indicator tooth portion 24. On the other side, the second date jumper 50A receives the rotational force in the C1 direction due to the adjacent teeth 23 of the first date indicator tooth portion 24 (of the first indicator of date 20 as the setting release means) in the engaged claw portion 55 to rotate in the direction F2. In this manner, the jump and stop claw part 52A of the second date jumper 50A releases the adjustment (of the claw wheel portion 45) from the second date indicator tooth portion 41 of the second date indicator 40. this case, when the first date jumper 26A completes the readjustment of the first date indicator 20 after the jump operation, the jump and stop claw portion 52A of the second date jumper 50A also returns to the adjustment position of the second index indicator shoe part 45. The engaged claw part 55 of the second date jumper 50A is in a position where it does not substantially interfere with teeth 23 of the first date indicator tooth portion 24 ( typically, before the completion of the adjustment of the first date indicator tooth portion 24 set by the first date jumper 26A, the readjustment of the second date indicator 40 set by the second jumper r of date 50A is completed).
After, similar to a case of the retrograde large date display mechanism 1 illustrated in FIG. 1, the operation described above is repeated. Even in the retrograde large date display mechanism 1A shown in FIG. 4, similar to the retrograde large date display mechanism 1 shown in FIG. 1, the date characters BD1 and BD2 of the big date can be precisely positioned in predetermined positions of the date window 17.
[0073] Above, the example of the retrograde large date display mechanism has been described, in which, when the end of the month is changed at the beginning of the month, the date character BD2 of the position of the tens (second digit) returns to "0" using the retrograde display mechanism. Instead, for example, the features of the retrograde display mechanism according to the present invention can be realized even in a retrograde day display mechanism in which the day display, when the end of the week is changed at the beginning. of the week, returns from "Saturday" to "Sunday", for example.
FIG. 6 shows an example of a timepiece 7B having a retrograde day display mechanism 1B as a retrograde display mechanism which includes a retrograde day display portion 8 performing the retrograde display for the day.
As illustrated in FIG. 6, the timepiece 7B includes the retrograde day display portion 8 using a day hand or day display needle 10 in addition to a 9H minute and hour display portion using the hour hand 11 and the minute hand 12 similar to the timepiece 7 illustrated in FIG. 3. The timepiece 7B further includes a small display portion of the 9S seconds using a small seconds hand 13B, 24-hour display portion 9T using a 24-hour hand 18, and a display portion of 9M date using a date hand 17B. However, the display portions 9M and 9T may not be provided. As seen in fig. 6, the day display pointer 10 can rotate about a center line axis G located in the nine o'clock position in directions G1 and G2, the small seconds hand 13B can rotate around a centerline line H located in the six o'clock position, the 24-hour hand 18 can rotate about a center line of center J in the twelve o'clock position, and the date hand 17B can rotate around a central axis line K located in the three o'clock position. In addition, the day display pointer 10 rotates intermittently by one step in the direction G1 whenever the day changes from Sunday to Saturday and, when the end of the week is changed at the beginning of the week, returns quickly in the G2 direction from Saturday's position at the end in the G1 direction to the Sunday position at the end in the G2 direction, that is, perform the retrograde operation.
As seen in FIG. 5, the retrograde day display mechanism 1B as the retrograde display mechanism includes a date indicator drive wheel 70B as a time value drive wheel, a day transmission wheel 20B as a wheel of time transmission, a hammer 60B as a wheel operation lever now no longer fan-shaped, but toothed on its entire periphery, a day indicator 40B as a moving wheel comprising an integrally toothed wheel, a 50B daytime jumper, like a fully serrated wheel, and a day jumper 26B.
In the retrograde day display mechanism 1B shown in FIG. 5, the components having the same functions as those of the retrograde large date display mechanism 1 illustrated in FIG. 1 add B after the same reference sign.
The date indicator drive wheel 70B, which rotates about a central axis line L in a direction L1 due to a wheel of a needle handling gear wheel such as hour wheel (hour indicator), includes a date indicator drive wheel cogged portion 71B as a time value drive wheel cogged portion and a 72B day finger as a valuable finger time.
The day transmission wheel 20B includes a toothed portion of the day transmission wheel 24B as a toothed portion of a time value transmission wheel which rotates about a center line M of the center by a tooth each day. due to the day finger 72B of the date indicator drive wheel 70B in a direction M1 and a day transmission wheel cam portion 30B as a drive cam portion. The day transmission wheel cam portion 30B includes a main surface cam portion 39 in which the distance from a center M (radial position) increases progressively in a direction M2 (direction opposite to the direction M1) as in a Archimedean spiral and a transition portion or transition surface portion 38B connecting a portion of maximum diameter 39a and a minimum diameter portion 39b of the main surface cam portion 39.
The hammer 60B can rotate about an axis line of center N in the directions N1 and N2 and includes arm portions 61B and 62B on both sides of the axis line of center N. The part hammer arm 61B is resiliently biased against the cam portion 30B of the day transmission wheel 20B by a hammer return spring 69B and acts as a cam follower portion which is engaged with the wheel cam portion. day transmission 30B. The arm portion 62B of the hammer 60B includes a day indicator rake 64B as the integral gear operation tooth portion at a front end 63B.
The small day indicator 40B as a moving member comprising an integrally toothed wheel meshes with a rake 64B of the hammer 60B and includes a tooth portion of the small day indicator 41B which rotates about the center line G in the directions G1 and G2 in response to the rotation of the hammer 60B in the directions N1 and N2 and a day indicator claw wheel portion 45B. In the example, the day indicator tooth portion 41B and the day indicator claw wheel portion 45B that extend arc-shaped are located on the different circle in the different plane. A small day hand 10 is arranged as a display part of the mobile being attached to the small day indicator 40B to rotate about the center line G in directions G1 and G2.
The small daybuddle 50B which is rotatable about a central axis line P in the directions P1 and P2 includes a jump and stop claw portion 52B on one side of the front end portion. an arm portion 51B forming the jumper main body portion and performs the skipping and stopping operation of the 40B small day indicator claw wheel portion of the 40B mobile using the jump and stop claw portion 52B under the action of a spring 59B. The front end portion of the other arm portion 53B of the day jumper 50B is a engaged portion 54B.
The day jumper 26B which is rotatable about a center line Q in the directions Q1 and Q2 includes a jump and stop claw portion 28B on one side of the front end portion of a arm portion 27B forming the jumper main body portion and performs the skipping and stopping operation of the toothed portion 24B of the day transmission wheel 20B using the jump and stop claw portion 28B under the action of a daytime jumper supporting a spring portion 29B extending from a setting wheel plate (not shown), for example. In the forward end portion of the other arm portion of the jumper 26B which also acts as the adjustment release means, a lever-shaped engagement protuberance 27aB is formed.
When the day jumper 26B as the setting release means rotates in the direction Q2 due to the toothed portion 24B of the day transmission wheel 20B during the jump and stop operation (performs the operation of jump), the engagement protrusion 27aB of the day jumper 26B presses in a direction T the engaged portion 54B of the small day jumper 50B opposite it in the direction Q2. Thus, the daytime jumper 50B rotates about the center axis line P in the direction P2 to release the setting of the small day indicator claw wheel portion 45B.
As a result, when the day is changed each day, the daytime jumper 26B releases the adjustment, which is set by the daytime jumper 50B, from the 40B claw wheel portion 40B of the day indicator 40B through the engagement between the engagement part 27aB and the engaged part 54B of the daytime jumper 50B. Thus, even when the end of the week passes (when the day is changed on the basis of a seven-day week), the daytime jumper 26B releases the daylight jumper setting 50B for the day indicator 40B to through the engagement between the engagement portion 27aB and the engaged portion 54B of the daytime jumper 50B.
In the retrograde display mechanism 1 B, when the front end portion of the arm portion 61B forming the cam follower of the hammer 60B is positioned in the minimum diameter portion 39b or in the vicinity of the portion transition point 38B of the day transmission wheel cam portion 30B, the hammer 60B is in a position where it rotates in the direction N2 in a maximum manner, the small day indicator 40B rotates in the direction G2 in a maximum manner, and the small day hand 10 that is attached to the small 40B day hand is in a position where it displays Sunday at the end of the G2 direction.
Whenever the date indicator drive wheel 70B rotates once in the direction L1 with the advancement of time, the day transmission wheel 20b rotates in the direction M1 by a tooth of the toothed portion 24B day transmission wheel. In this way, the hammer 60B which is in contact with the main surface cam portion 39 of the day transmission wheel cam portion 30B rotates intermittently in the N1 direction because of the arm portion 61B forming the cam follower and the small day indicator 40B and the small day hand 10 rotates intermittently in the direction G1 of the distance corresponding to a day.
Here, the rotational position of the small day hand 10 in the direction G1 is provisionally set by the day transmission wheel cam portion 30B and the hammer 60B. Yet, the final rotational position of the small day hand in the direction G1 is determined by the claw wheel portion 45B of the small day indicator 40B and the small day jumper 50B adjusting the claw wheel portion 45B. That is, typically, the main surface cam portion 39 of the cam surface 30B is formed in advance so that the provisional rotational positions, which are determined by the cam portion 30B and the hammer 60B, the small day indicator 40B and the small day hand 10 in the direction G1 are deflected slightly in the direction G2 (are positioned in front when seen in the direction G1) of the rotational position in the direction G1 which should be positioned at the end. In this case, when the jumper claw part and stop 52B of the day jumper 50B performs the setting operation for the small day indicator claw wheel portion 45B of the small day indicator 40B located in the position of provisional rotation under the action of the daytime jumper spring 59B to be inserted into the adjacent claw portions of the day indicator claw wheel portion 45B, the day indicator 40B having the claw wheel portion day indicator 45B rotates further in the direction G1. That is, the daytime jumper 50B daytime jumper spring 59B overcomes the torque caused by the spring force of the hammer spring 69B to turn the hammer 60B in the N1 direction through the small indicator 40B day. That is, the hammer arm portion 60B, i.e., the leading end portion of the cam follower portion 61B is slightly separated from the main cam surface 39 of the cam part 30.
In addition, in a case where the day transmission wheel 20B can rotate in the direction M2 by applying a force to the cam portion 30B through the hammer 60B, the rotational position in the direction G1 can be adjusted by the cam portion 30B as precisely as possible.
The intermittent rotation operation of the day indicator 40B and the small day hand 10 in the direction G1 with the rotation described above of the date indicator drive wheel 70B is repeated until 'to Saturday night. In addition, as described above, when the day is changed daily, the daytime jumper 26B releases the adjustment, which is set by the daytime jumper 50B, from the claw wheel portion 45B of the indicator. 40B day through the engagement between the engaging portion 27aB and the engaged portion 54B of the day jumper 50B.
When Saturday is changed to Sunday at the end of the week, the daytime jumper 50B releases the rotation setting of the day indicator claw wheel portion 45B so that the small day indicator 40B rotates. freely, the daylight 50B rotating in the direction P2 by receiving a force T through the engaged portion 54B due to the protrusion engagement 27aB of the jumper 26B which rotates in the direction Q2 with the rotation of the wheel of day transmission 20B in the direction M1 to perform the jump operation. Thus, when Saturday is changed to Sunday at the end of the week, the front end portion of the arm portion 61B forming the cam follower of the hammer 60B reaches the maximum diameter portion 39a of the cam portion 30B of the day transmission wheel 20B with the rotation of the day transmission wheel 20B in the direction M1. When the leading end portion passes the maximum diameter portion 39a, the hammer 60B falls into the minimum diameter portion 39b under the action of the hammer return spring 69B. That is, the hammer 60B rotates about the centreline line N in the direction N2 under the action of the hammer return spring 69B, the small day indicator 40B rotates in the direction G2 to through the gear between the tooth portions 64B and 41B, and the small day hand 10 returns from the end in the direction G1 indicating Saturday at the end in the direction G2 indicating Sunday, that is, performs the retrograde operation.
[0092] Above, an example in which the setting of the day indicator 40B set by the daytime jumper 50B is released by the day jumper 26B has been described. Instead, as shown in FIG. 7, the setting of the small day indicator 40B set by the day jumper can be released directly not by the day jumper, but by the day transmission wheel 20B.
FIG. 7 shows a part of a timepiece 7E having a retrograde day display mechanism 1E as a retrograde display mechanism according to another modification of the present invention. The retrograde day display mechanism 1E shown in FIG. 7 is approximately the same structure as that of the retrograde day display mechanism 1B shown in FIG. 5 except that the structures (forms, arrangement, and linkage) of a daytime jumper 26E and a small daytime jumper 50E are different from the structures (shapes, arrangement and linkage) of the jumper 26B day and daylong 50B of the retrograde day display mechanism 1B shown in FIG. 5. To be exact, a shape or the like of the 59E daytime jumper spring is also changed according to the change of shape or similar of the 50E day jumper. In addition, more specifically, the relative positions in the peripheral direction of the (fan-shaped) toothed portion 41B and the (fan-shaped) 40B claw wheel portion 40B of the day indicator are also changed as wanted according to the change of shape and arrangement of the daytime jumper 50E. Yet here, to simplify the description, the same reference sign is given assuming that they are the same in practice. In the retrograde day display mechanism 1E shown in FIG. 7, the same reference signs are given practically to the same components as those of the retrograde day display mechanism 1B shown in FIG. 5. Components having different points, but corresponding to the components of the retrograde day display mechanism 1B shown in FIG. 4, E is added at the end instead of B. To the components that have different points, but correspond to the components of the retrograde large date display mechanism 1A as the retrograde display mechanism illustrated in FIG. 3, E is added at the end instead of A.
In short, the jumper day 26E is different from the jumper day 26B shown in FIG. 5 and has approximately the same structure as that of the day jumper 26B shown in FIG. Except that an engagement portion corresponding to the protrusion engagement 27aB is neglected. The day jumper 26E includes a main body of a jumper 27E in the form of a lever and a catch and stop claw part 28E which performs the jump and stop operation of the toothed portion of the day transmission wheel 24B, can turn around. the center line axis Q in the directions Q1 and Q2, and receives a force in the direction Q1 through the day jumper supporting the spring portion 29B.
The 50E daylong that is rotatable about a center axis line PE in the directions P1 and P2 includes a jump and stop claw portion 52E on one side of the front end portion of the an arm portion 51E forming the main body of the daytime jumper and an engaged claw portion 55E which is engaged with teeth 23B of the day transmission gear tooth portion 24B of the day transmission wheel 20B at the front end portion of the other arm portion 53E extending in a different direction from the arm portion 51 E. In this retrograde large date display mechanism 1E, the daylight jumper 50E performs the skipping and stopping operation of the day indicator claw wheel portion 45B which is integrally provided with the day indicator 41B toothed portion of the day indicator 40B for adjusting the indicator claw wheel portion of day 45B. Thus, the small day hand 10 can be precisely positioned in a predetermined position of the fan-shaped display portion 8 (also see Fig. 6) to effect the appropriate day display, regardless of errors in the display. the shape of the day transmission wheel cam portion 30B of the day transmission wheel 20B, in the shape of the arm portion 61B forming the cam follower of the hammer 60B, and the like.
In the retrograde day display mechanism 1E having the daytime jumper 26E and the daytime jumper 50E, when the end of each day (a day) approaches, the day finger 72B of the wheel 70B Date Indicator Drive

权利要求:
Claims (9)
[1]
is engaged with the adjacent teeth 23B of the day transmission gear tooth portion 24B to rotate the day transmission gear tooth portion 24B by a tooth in the direction M1. At this time, in response to the rotation of the day transmission gear tooth portion 24B of the day transmission wheel 20B in the direction M1, on one side, the day jumper 26E performs the jump operation of teeth 23B of the toothed portion of the day transmission wheel 24B. On the other hand, the daylight jumper 50E receives the rotational force in the direction M1 because of the adjacent teeth 23B of the day transmission gear tooth portion 24B in the engaged claw portion 55E to rotate in the P2 direction . In this manner, the jumper claw and stop portion 52E of the day jumper 50E releases the adjustment (of the claw wheel portion 45B) from the small day indicator tooth portion 41B of the small day indicator 40B. In this case, when the day jumper 26E completes the release of the day transmission wheel 20B after the jump operation, the jump and stop claw part 52E of the day jumper 50E also returns to the adjustment position of the 45B day indicator claw wheel part. The engaged claw portion 55E of the day-length jumper 50E is in a position where it practically does not interfere with the teeth 23B of the toothed portion of the day-transmission wheel 24B (typically, before the completion of the adjustment of the toothed portion 24B day transmission wheel set by day jumper 26E, readjustment of 40B day indicator set by 50E day jumper is completed). After, similar to a case of the retrograde day display mechanism 1B shown in FIG. 5, the operation described above is repeated. Even in the retrograde day display mechanism 1E shown in FIG. 7, similar to the retrograde day display mechanism 1B shown in FIG. 5, the small day hand 10 can be accurately positioned in a predetermined position of the fan-shaped display portion 8 of a dial 16B to perform an appropriate day display. When Saturday is changed to Sunday at the end of the week, the small jumper of day 50E receives the rotational force in the direction P2 of the toothed portion 23B of the toothed portion of 24B day transmission wheel of the wheel day transmission means 20B as the setting release means in the engaged portion 54E with the rotation of the day transmission wheel 20B in the direction M1. The jumper claw part and stop 52E of the day jumper 50E rotates in the direction P2 to release the rotation setting of the small day indicator claw wheel part 45B so that the small day indicator 40B freely rotates . Thus, when Saturday is changed to Sunday at the end of the week, the front end portion of the arm portion 61B forming the cam follower of the hammer 60B reaches the maximum diameter portion 39a of the cam portion 30B of the day transmission wheel 20B with the rotation of the day transmission wheel 20B in the direction M1. When the leading end portion passes the maximum diameter portion 39a, the hammer 60B falls into the minimum diameter portion 39b under the action of the hammer return spring 69B. That is, the hammer 60B rotates about the centreline line N in the direction N2 under the action of the hammer return spring 69B, the small day indicator 40B rotates in the direction G2 to through the gear between the tooth portions 64B and 41B, and the small day hand 10 returns from the end in the direction G1 indicating Saturday at the end in the direction G2 indicating Sunday, that is, performs the retrograde operation. claims
A retrograde display mechanism (1, 1A) comprising: a retrograde display mechanism main body including a time value drive wheel (70) which includes a time value driving tooth portion (71) and a time value finger (72) which is arranged to advance a time value including a date and which turns once every day, a time value transmission wheel (20) which has a toothed portion (24) and a portion drive cams (30) which are arranged to be rotated by a tooth each day by the time value finger (72) of the time value drive wheel (70), an operating lever ( 60) having a cam follower portion (61) and a rake (64) which are resiliently biased against the drive cam portion (30) of the time value transmission wheel ( 20) to be engaged with the drive cam portion (30), and a an eye (40) comprising a fan-shaped wheel, which has a toothed portion (41), and a display portion, said toothed portion (41) of fan-shaped wheel meshing with the rake (64) ) of the fan-shaped wheel operating lever (60) to rotate in response to tilting of the fan-shaped wheel operating lever (60), wherein the wheel (40) comprising the wheel-shaped fan is arranged to perform a retrograde rotation movement to return to an initial position at the end of each month; a fan shaped impeller (50, 50A) arranged to blow and stop the toothed portion (41) of the fan-shaped wheel of the mobile (40); and setting release means which releases an indexing position by the fan-shaped wheel jumper (50, 50A) at each end of the month, and wherein the time value is a date, the drive wheel time value (70) is a date indicator drive wheel, the time value finger (72) is a date finger, the time value transmission wheel (20) is a first date indicator which has a date display surface (21) displaying the position of the units of a date, the fan-shaped wheel operating lever (60) is a second date indicator operating lever, the mobile ( 40) comprising the fan-shaped wheel is a second date indicator displaying the position of tens of a date, the toothed portion (41) of fan-shaped wheel is formed on the second date indicator, the portion display is a date plate (42), and the jumper (50, 50A) wheel-shaped fan is a second date jumper.
[2]
The retrograde display mechanism (1, 1 A) according to claim 1, wherein the setting release means is arranged to release the indexing position by the second date jumper (50, 50A) whenever the first date indicator (20) rotates at a distance corresponding to a day.
[3]
A retrograde display mechanism (1) according to claim 2 comprising a first date jumper (26) which jumps and stops the tooth portion of the first date indicator (24), wherein the first date jumper (26) moves the second date jumper (50) for releasing the indexing position of the second date display wheel set by the second date jumper (50) when the first date indicator (20) rotates according to the corresponding distance to a day to pass a tooth of the tooth portion of first date indicator (24).
[4]
The retrograde display mechanism (1A) according to claim 2, wherein the second date jumper (50A) includes a first date indicator engaging portion (55) engaged with the first indicator tooth portion date (24), and the second date jumper (50A), when the first date indicator (20) rotates by the distance corresponding to a day, is arranged to be moved by the first date indicator engagement portion (55) to release the indexing position of the second date display wheel.
[5]
A retrograde display mechanism (1B, 1E) comprising a retrograde display mechanism main body including a time value drive wheel (70B) which includes a time value driving tooth portion (71 B) and a time value finger (72B) which is arranged to advance a time value including a day and which turns once daily, a time value transmission wheel (20B) which has a toothed portion (24B) and a portion of driving cam (30) which are arranged to be rotated by a tooth each day by the time value finger (72B) of the time value drive wheel (70B), an operating lever (60B) ) integrally toothed wheel which has a cam follower portion (61) and a rake (64B) which are resiliently biased against the drive cam portion (30B) of the time value transmission wheel (20) to be engaged with the drive cam portion (30B ), and a mobile (40B) comprising an integrally toothed wheel, which has an integral toothing (41 B), and a display portion, said integral toothing (41 B) meshing with the ratchet (64B) of the lever of integral gear operation (60B) for rotating in response to tilting of the integral gear wheel operating lever (60B), wherein the movable wheel (40B) comprising the integrally toothed wheel is arranged to perform a retrograde rotational movement for return to an initial position each weekend; a jumper (50B, 50E) integrally toothed wheel arranged to blow and stop the integral toothing (41 B) of the integral gear wheel (40B); and setting release means which releases an indexing position by the serrated wheel jumper (50B, 50E) at each weekend, wherein the time value is one day, the time value drive wheel ( 70B) is a day indicator drive wheel, the time value finger (72B) is a day finger, the time value transmission wheel (20B) is a day indicator transmission wheel, the operation lever (60B) integrally toothed wheel takes the form of a hammer, the movable (40B) comprising the integrally toothed wheel is a small day indicator, the integral toothing (41 B) of the integrally toothed wheel is a small day indicator tooth portion, the display portion is formed by a small day hand (10), and the integrally toothed wheel lug (50B, 50E) is a small day duster.
[6]
The retrograde display mechanism (1B, 1E) according to claim 5, wherein the setting release means releases the indexing position by the daytime jumper (50B, 50E) whenever the day transmission wheel (20B) rotates at a distance corresponding to a day.
[7]
A retrograde display mechanism (1B) according to claim 6 comprising a daytime jumper (26B) which is arranged for jumping and stopping the toothed gear wheel portion (24B), wherein the day jumper (26B) ) moves the small daytime jumper (50B) to release the indexed position of the small day indicator tooth portion (41B) determined by the daytime jumper (50B) when the day transmission wheel (20B) performs a rotation according to a distance corresponding to one day to pass a tooth of the toothed portion (24B) of the day transmission wheel.
[8]
A retrograde display mechanism (1E) according to claim 6, wherein the daytime jumper (50E) comprises a day transmission wheel engaging portion (55E) engaged with the wheel gear portion (24B). day transmission (50E), when the day transmission gear tooth portion (24B) rotates the distance corresponding to a day, is displaced by the wheel engaging portion day transmission (55E) to release the adjustment of the small day indicator tooth portion (41 B).
[9]
9. Timepiece (7) comprising the retrograde display mechanism (1) according to any one of claims 1 to 8.

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同族专利:

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公开号 | 公开日

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CN102681423B|2016-12-14|

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US8724430B2|2014-05-13|

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US20120236691A1|2012-09-20|

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JP5715453B2|2015-05-07|

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CN102681423A|2012-09-19|

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JP2012189518A|2012-10-04|

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CH705041A2|2012-11-15|

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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JP2011054884A|JP5715453B2|2011-03-13|2011-03-13|Retrograde display mechanism and watch equipped with the same|

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