• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    It will specify a mechanism for large display of a date as well as a timer incorporating a mechanism. The size of the date disc in the case of a timepiece is reduced, and the structure is less complicated. A mechanism (1) for large-scale display of a date (50) with teeth (52) is described in which there is a shift tooth (53a) and the one-digit of the date is displayed. A first drive wheel (40) of the first date indicator (50) drives it gradually when in the working position. A second date indicator (60) with a serration (62) indicates the tens digit of the date. A drive wheel (45) for the second date indicator (60) continues to incrementally move it when in the working position. An intermediate unlock wheel (70) is driven by the shift tooth (53a) and by the toothing (62) of the second date hand when these parts are in the operative position. A switching mechanism (30) carries the drive wheels of the two date indicators such that they can move between a first release position - in which the first drive wheel in working position and the second drive wheel in non-working position - and a second release position, in which the second Drive wheel in working position and the first drive wheel are in non-working position.
    公开号:CH704532B1
    申请号:CH00224/12
    申请日:2012-02-22
    公开日:2016-02-15
    发明作者:Shigeo Suzuki；Mamoru Watanabe
    申请人:Seiko Instr Inc；
    IPC主号:
    专利说明:

    Background of the invention
    1. Field of the invention
    The present invention relates to a mechanism for large display of a date and a timer, in which this mechanism is installed.
    2. Description of the Related Art
    In order to easily recognize the display of a date, one already knows a mechanism for large display of a date in which the individual digits have a special size.
    In a large-display date mechanism, generally, the one-digit of a date and also the tens of the date are displayed on discrete date slices, thereby reducing the number of date numbers from a single date slice, and increasing the surface area that one Date digit can show. Such large-scale display mechanisms have already been disclosed in the following publications: JP-A 2005-214836 (Patent Literature 1), Japanese Patent No. 3,390,021 (Patent Document 2) and Japanese Patent Publication No. 4,307,613 (Patent Document 3) and Japanese Patent Publication No. Hei others too.
    If the unit digit of a date on a date disc from date 1 to date 31 is displayed, then this date disc contains the following numbers, which are visible in a known mechanism for gross display of a date: 1, 2, 3, 4, 5 , 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 and 1. Since the large date disc appears inevitable to ensure the largest possible display per digit, the size of the date disc must be increased to an inner edge of a timepiece. In this type of large date display mechanism, the display of the tens digit of a date has been examined in a number of ways, however, the display of the one digit of a date requires a very large annular date disc. When attempting to exploit an area on a dial of the timepiece for a different type of display, a variety of limitations are inevitable.
    In addition, the technique has become known in which cover a plurality of date slices a concentric area, and a date disc, which is located above the other, is provided with a window to make a date on the underlying date disc visible, and therefore For example, Japanese Patent Publication JP-A-2010-44072 (Patent Document 4) and JP-A-2010-101 896 (Patent Document 5) can reduce the number of data per data disc.
    In these mechanisms, however, the same display mechanism as in the usual large displays of the date, since the date disc makes the two digits of the date display visible and the size increases to the adjacent inner peripheral edge of the housing of the timer. In addition, it is inevitable that the timepiece must be made thicker, because the large date discs must be superimposed. Finally, a special and very complicated structure is also unavoidable, because their space can not be exploited for other purposes.
    In addition, in the case where the one-digit of a date is displayed on a date disc, a display method using ten digits of 1, 2, 3, 4, 5, 6, 7, 8, 9 and 0 is proposed, but in In this case, one program wheel is used to control both rotations of a date disc indicating the one digit and another date disc to display the tens digit of the date. In this solution, a complicated structure due to the program wheel is inevitable.
    Summary of the invention
    An aspect of the present invention is to provide a mechanism for large-scale display of a date and a timer, in which this mechanism is installed, and it becomes possible to display a date relatively large, while reducing the size of a date disc in the case of a timepiece can be, and also a complicated structure can be avoided.
    The inventive mechanism for large display of a date is characterized by the following features: a first date indicator, which has a first toothing with a plurality of teeth, one of which is a switching tooth with switching function, and a first date disc, on which the unit digit of the date is shown; a first date wheel drive wheel which has a first date finger and performs a full turn once a day and, when brought into the first date handler operating position where it can be engaged with the first date hand toothing, also through the first date finger is brought into this procedure and the first date indicator switches once a day by a tooth of the teeth on the first date indicator; an intermediate date unlocking wheel which is indexed by the toggle by a tooth when it is in engagement with the switching tooth of the teeth of the first date indicator; a second date indicator having a second teeth with a quadruple number of teeth and rotated by a tooth on a rotation of the intermediate date Entsperrrads around a tooth, and which has a second date disc on which the tens digit of the date is displayed; a second second wheel indicator drive wheel provided with a second date window that makes a full turn once a day and when brought into the second date handler operating position where it can be engaged with the teeth on the second date handler is also brought into the procedure by the second date finger and advances the second date indicator once a day by one tooth of the teeth on the second date indicator; a shift mechanism to which the drive wheels of the first date indicator and the second date indicator are arranged so as to be brought into a non-operation position between a first release position in which the drive wheel of the first date indicator is brought into operating position and the drive wheel of the second date indicator is placed in a non-operating position the second date finger on the drive wheel of the second date indicator and the teeth of the second date hand on a mutual engagement can move and move a second release position in which the second date finger is brought on the drive wheel of the second date indicator in the operating position of the drive wheel of the second date indicator, in he combs with the teeth on the second date indicator and the drive wheel of the first date indicator is brought into a non-operating position in which the first date finger on the drive wheel of the first date indicator at a Eingrif f is prevented with the teeth on the first date indicator.
    The mechanism for large display of a date according to the present invention, a switching mechanism is provided, which the drive wheels of the first and second date indicator between a first non-operating position, wherein the drive wheel of the first date indicator is brought into the working position of the drive wheel of the first date indicator, the drive wheel is brought to a non-working position of the second date indicator and in which the second date finger of the second drive wheel and the teeth on the second date indicator are locked by an engagement, and a second release position, movably supported, in which the second date finger of the second drive wheel is brought into a working position and engaging with the gearing on the second date indicator. The first date indicator drive wheel is placed in a non-working position in which the first date finger on the first drive wheel of the date indicator and the teeth on the first date indicator are interlockingly locked. When the shift mechanism is brought into the first non-working position, the first date finger rotates once a day on the first drive wheel of the date indicator. The rotation of the first date handler is translated to the second date hand over the date-release toothing during each ten date displays, while ten date displays each. As a result, the second date indicator is rotated to execute the full-size date display. Now, when the switching mechanism is brought into the first non-working position, the engagement with the drive wheel of the second date indicator is locked. Therefore, there is no fear that rotation of the second date hand will affect the rotation of the first date hand. In the mechanism for large-display of a date according to the present invention, a program wheel having a complicated structure has now become unnecessary because this program wheel is replaced by the above-described switching mechanism.
    In the mechanism for large display of a date according to the present invention, the switching mechanism is provided which is configured as described above. Therefore, when the shift mechanism is brought into the second non-working position, the second date finger on the second drive wheel of the date indicator rotates this second date indicator to return to its home position. At this time, the intermediate date unlock wheel rotates along with the rotation of the second date hand. However, since the shift tooth is in a position remote from the date unlocking tooth of the date 31, the first date indicator can not rotate when the date unlock wheel rotates. In this way the large display is brought from a 31 to the 01, which means that a return to the original display state takes place (first date).
    In this mechanism for large display of a date according to the present invention, the teeth of the first date indicator usually has ten teeth.
    In this case, when the first date disc indicating the one-digit of a date can be made relatively small, in contrast to a conventional mechanism for large display, it is not necessary that the date 31 is displayed as a composite number. Therefore, a sufficient space per digit is sufficiently secured, and a large-area date can be displayed.
    In the mechanism for large display of a date according to the present invention, the switching tooth of the teeth on the first date indicator is thicker than the other teeth which form the teeth on the first date indicator. The intermediate date unlock wheel has a first date unlock tooth with a plurality of first unlock teeth and a second intermediate date unlock tooth with the same pitch as that on the first date unlock gear and lies completely over the date unlock gear on the first date hand. The gearing has a plurality of second date release teeth in which the width of the valley of the gearing is smaller and the thickness is less than that of the first date-Entsalzzähne; the teeth on the second date indicator mesh with the second date release teeth, and the index tooth on the first date indicator meshes with the first date release teeth.
    In this case, the teeth on the first date indicator and the teeth on the second date indicator can directly engage with the intermediate date unlock wheel, the claimed space can be minimized and the complexity of the structure minimized. In addition, for example, instead of a configuration in which the switching tooth on the teeth of the first date indicator has been made thicker than the other teeth of this toothing on the first date indicator, this tooth can also be made longer than the other teeth forming the toothing on the first date indicator.
    The mechanism for large display a date according to the present invention typically has a first pawl, which causes the teeth on the first date indicator to release a tooth for indexing and stop the next tooth, and a second date ratchet, which the teeth on second date indicator to accomplish the process of enabling the indexing and pausing.
    In this case, the first date indicator and the second date indicator can be reliably set in the predetermined rotational positions. Since the first date disc and the second date disc are reliably held in the predetermined positions, the date display in the date window can also be reliably and suitably realized.
    In the mechanism for large display of a date according to the present invention, the switching mechanism typically has the following parts: a lever on the drive wheel of the date indicator, which has a main body which rotatably receives the drive wheel of the first date indicator and the drive wheel of the second date indicator with a first date Cam follower and a second date cam follower is provided, which are integrally formed on the main body of the lever; a first date cam which is part of the toothing on the first date indicator and in contact with the first date cam follower; and a second date cam, which is part of the toothing on the second date indicator and is acted upon by the second date cam follower.
    Under these circumstances, the rotational position of the main body of the lever can be adjusted by the engagement between the first date cam and the first date cam follower and the engagement between the second date cam and the second date cam follower. Therefore, the main body of the lever rotates, and the rotation centers of the drive wheels of the first and second date indicators, which are rotatably mounted on the main body of the lever, are indexed. As a result, the positions of the first and second date fingers are indexed. It follows that the switching mechanism can be switched between a first non-working position and a second non-working position.
    In the mechanism for large display of a date according to the present invention, the lever on the drive wheel of the date indicator is switched on day 31 such that the first date cam follower at the concave portion of the first date cam and the second date cam follower at the concave portion of the second Control cam is applied; the switching mechanism is then in the second non-working position. The toothing on the second date indicator is indexed by the drive wheel of the second date indicator by one tooth and thereby reaches its starting position.
    Under these circumstances, the switching mechanism is on date 31 in its second non-working position, the drive wheel on the second date indicator is brought into the working position of the drive wheel on the second date indicator and transferred into engagement with the teeth of the second date indicator, with the aid of the second Date finger, and the second date indicator is indexed by a tooth in its teeth, where it returns to its original position (the position at which the tens digit is 0). At this time, without advancing, the first date indicator is held at the state where a 1 appears at the one digit of a date, and the display is advanced from a 31 to a 01.
    There are two reasons why the first date indicator is held in place without being switched. These are the following:(1) When the shift mechanism is at the second non-working position, the first date indicator drive wheel is in a non-working position that is out of engagement with the first date indicator toothing. Even if the drive wheel of the first date indicator is rotated further, no rotation occurs at the teeth of the first date indicator, and therefore, the first date plate is not indexed.(2) When the date indicator 31 changes to 01, namely, when the second date indicator is returned to a reference position, the intermediate date unlocking wheel also rotates one tooth on the teeth of the first date indicator, starting from the position at which it rests Date unlock wheel at the display 31 is engaged, continue. Therefore, the teeth on the first date indicator are not indexed by the rotation of the intermediate date unlock wheel, and the first date disc is held in the state where a 1 is displayed. In this large date display mechanism, 1 on date 31 and 1 on date 01 will still be indicated by the same number on the first date slice. Therefore, typically, the first date disc has ten digits including 1 through 9 and 0. However, if it is required to use more than ten-digit numbers, there may be twenty or more digits.
    In this mechanism for large display of a date according to the present invention preferably elastic means are provided which allow their spring force to act on the main body of the lever in a direction away from a first lever position where the main body of the lever is located, when the switching mechanism is in the first non-working position. The spring force also acts against a second position of the lever in which the main body of the lever is located when the switching mechanism is at the second non-working position.
    In this case, the lever on the drive wheel of the date indicator is rotated such that the first date cam follower is in contact with a concave portion of the first cam and the second date cam follower in abutment with a concave portion of the second date cam , The position of the lever on the drive wheel of the date indicator may be determined by the spring means which apply its resilient biasing force to the main body of the lever in a direction in which the switching mechanism is at the second displacement position. As in an embodiment to be described below with reference to the drawing, for example, the rotational biasing force on the lever on the drive wheel of the date indicator by engagement between the teeth of the intermediate date wheel and the teeth of the drive wheels of the first and second date indicator be exercised. Then can be dispensed with the spring means.
    In the mechanism for large display of a date according to the present invention typically coincides the rotation center axis of the lever on the drive wheel of the date indicator with a central axis of rotation of the intermediate date wheel, which causes the rotation of an hour indication on the drive wheels of the first and second date indicator.
    In this case, the first and second non-working position can be easily adjusted by rotating the main body of the lever on the drive wheel of the date indicator.
    In the date large display mechanism according to the present invention, the teeth of the first date handler typically include ten teeth, and the second date handler preferably includes eight teeth in its toothing.
    In this case, a digit at the one-digit of a date can be displayed large, since the first date disc has only a minimum number of date digits. In addition, as digits at the tens place eight numbers are displayed one after the other. As a result, when four digits are displayed from 0 to 3, the date may be displayed twice each time in a state where the first date and second date slices may be about the same size of the display with approximately the same digit size.
    A timepiece according to the present invention incorporates the above-described mechanism for large display of a date as an installation.
    Brief description of the drawings
    [0030]<Tb> FIG. 1 <SEP> basically shows the appearance of a timepiece according to a preferred embodiment of the present invention, with a date large display mechanism according to a preferred example of the present invention;<Tb> FIG. Fig. 2 <SEP> represents in plan view the essence of the mechanism for large display of the date of the timepiece according to Fig. 1;<Tb> FIG. 3A and 3B <SEP> show a cross-sectional area of a timepiece from the figure, from which the large date display according to FIG. 2 of the timepiece according to FIG. 1 can be seen; Fig. 3A is a cross-sectional view taken along the line IIIA-IIIA in Fig. 2; Fig. 3B is a cross-sectional view taken along the line IIIB-IIIB in Fig. 2;<Tb> FIG. 4A and 4B <SEP> schematically show a first date indicator of the date large display mechanism of Fig. 2; 4A is a plan view and FIG. 4B is a cross-sectional view taken along line IVB-IVB in FIG. 4A;<Tb> FIG. 5A and 5B <SEP> are simplified views of a second date indicator of the date large display mechanism of FIG. 2. 5A is a plan view and FIG. 5B is a cross-sectional view taken along line VB-VB in FIG. 5A;<Tb> FIG. Figs. 6A, 6B and 6C <SEP> are simplified views of an unlocking idler in the large date display mechanism of Fig. 2; Fig. 6A is a plan view and Fig. 6B is a cross-sectional view taken along the line VIB-6VIB in Fig. 6A;<Tb> FIG. FIGS. 7A and 7B show enlarged views of a date release arrangement in the cross-sectional views of FIGS. 3A and 3B; FIGS. 7A is an enlarged cross-sectional view showing the engagement of the first and second date indicators and the idle release wheel in a condition that a gear shift tooth on the first date handler performs shifting via a date intermediate wheel. 7B is an enlarged cross sectional view showing the engagement conditions of the first and second date indicators and the unlocking unlocking wheel in a state where a shift tooth of the first date indicator can not advance a date intermediate wheel (including a state in which the second date indicator is made ready for switching);<Tb> FIG. Fig. 8 <SEP> is a plan view similar to that of Fig. 2, showing the mechanism for large display of the date which is in the state of the fifth day, in a normal unlocked state in which a month switch (date initialization) is performed. or the handover is not executed;<Tb> FIG. 9A and 9B <SEP> show views of a process in which the switching takes place from day 9 to day 10. Fig. 9A is a plan view similar to that of Fig. 2, showing a state in which the switching (release-stop-stop) operation starts from the 9th to the 10th day. Fig. 9B is a plan view similar to that of Fig. 2, showing a state in which the switching operation (enabling - switching - stopping) is in progress, starting from the state of Fig. 9A;<Tb> FIG. 10A and 10B <SEP> show the progress of switching from day 9 to day 10. FIG. 10A is a plan view similar to that of FIG. 2, showing a state in which the switching operation has progressed from the state of FIG 9B. Fig. 10B is a plan view similar to that of Fig. 2, showing a state in which the switching operation from that of Fig. 10A is further advanced and the switching is practically completed;<Tb> FIG. Figs. 11A and 11B <SEP> schematically show a process of unlocking the last date, namely, when switching from day 30 to day 31. Fig. 11A is a plan view similar to that of Fig. 2, showing a state in which the operation of Figs Unlocking the last date from day 30 to day 31 begins. Fig. 11B is a plan view similar to that of Fig. 2, indicating the time at which partial unlocking starts from the state of Fig. 11A;<Tb> FIG. 12A and 12B <SEP> are views of a process of unlocking the latest date from day 30 to day 31. FIG. 12A is a plan view similar to that of FIG. 2, showing a state in which the process of unlocking the last one Date from the state of FIG. 11B has already advanced. Fig. 12B is a plan view similar to that of Fig. 2, showing a state in which the last-date unlocking operation has proceeded from the conditions shown in Fig. 11A, with the last-date unlocking being practical is finished;<Tb> FIG. Figs. 13A and 13B <SEP> schematically show a process of month switching (initialization of the date) from day 31 to day 01 of the next month. Here, Fig. 13A is a plan view similar to that of Fig. 2, showing a state in which the process of switching the month (initialization of the date) from day 31 to day 01 is in progress. Fig. 13B is a plan view similar to Fig. 2, showing a state in which the month switching (initialization of the date) as the process has already progressed a little from the state shown in Fig. 13A; and<Tb> FIG. 14 <SEP> shows schematically the process of monthly switching (initialization of the date) from day 31 of a month to day 01 of the next month. Fig. 14 is a plan view similar to that of Fig. 2, showing a state in which the month switching (initialization of the date) as the operation from the state of Fig. 13B is further advanced and the month switching is practically completed.
    Detailed Description of the Preferred Embodiments
    Preferred embodiments of the present invention will now be presented with reference to the accompanying drawings.
    1st embodiment
    A timer 2 with a mechanism 1 for large display of the date according to a first preferred embodiment has the external appearance, which is shown simplified for example in Fig. 1. The timer 2 shows the tens digit of a date D1 and the one-digit of the date D2 in a date window 14 of a dial 13, which is located in a visible region of an opening 12 in the housing 11 of the timepiece. In the example shown in the drawing, one sees in the window D1 a 2 and in D2 a 0, i.e., one is on the 20th day and this is indicated. FIG. 1 also shows an hour hand 15, a minute hand 16 and a second hand 17, these hands rotating about a common central axis C. There is still an elevator shaft 18, which can be pressed in and out, along a central axis line A, and which is rotatable about this central axis line A, provided in a conventional manner.
    For example, as shown in FIG. 3B, the hour hand 15 is attached to the front end of a large-diameter hollow tube 23b, and a gear 23a of an hour wheel or hour hand 23 is seated on the side of the dial 13 of a motherboard 20 on this hollow shaft. The minute hand 16 is attached to the front end of a middle diameter hollow tube 24b which extends through the motherboard 20 from a predetermined location of a gearing 24a of a minute hand 24 located on the side of the back panel (not shown) of the motherboard 20. The second hand 17 is fixed to the front end of a small-diameter shaft 25b of a gear 25a of a second hand 25. The hour wheel 23, the minute hand 24 and the second hand 25 are interconnected via intermediate gear wheels, and these wheels are not shown in the drawing.
    As can be seen from the plan view of Fig. 2 and the cross-sectional views of Figs. 3A and 3B, the date large scale display mechanism 1 includes a date intermediate wheel 27, a date indicator drive lever 30, a drive wheel 40, and a drive wheel 45 for driving the date indicator, a first and a second date indicator 50 or 60, an intermediate wheel 70 for unlocking and a date switching structure 80 with a first pawl 81 and a second pawl 86 on.
    The intermediate date wheel 27 has a toothing 28, which is integrally formed on the hour wheel 23. The intermediate date wheel 27 rotates clockwise C1 about the central axis C, once every 12 hours, driven by the rotation of the hour wheel 23.
    The first and the second drive wheel 40 and 45 of the date indicator respectively has a first and a second drive toothing 41 and 46, which with the teeth 28 of the intermediate date wheel and with the first and the second drive wheel 43 and 48, respectively the date indicator is combing, and each date indicator is provided with a date finger or unlock finger 42, 47, respectively.
    The Dateanzeigerrrad drive lever 30 consists of a main body 31 and cam followers 32 and 33 which extend away from the main body 31 of the lever. The main body 31 has the shape of a long and thin plate, and is supported at both end portions 31a and 31b so that the first and second drive wheels 40 and 45 for the date indicators are rotatable about the center axes E and F, respectively. The first cam follower support lever 32 is that portion of the lever 32 which extends in a direction which intersects the main body 31 of the lever at an intermediate portion 31c of the main body 31 of the lever. A first cam follower 35 extending in a direction intersecting the carrier lever 32 is located at the front end 32a of the lever portion 32. The second carrier 33 for the cam follower 35 is the lever portion 33 extending from a front end portion 31b of the main body 31 of the lever extends away. A second cam follower 36 extends in a direction intersecting the lever carrier 33 and is located in a front end portion 33 a of the lever 33.
    The main body 31 of the lever of the drive lever 30 of the date indicator is rotatably inserted into a small diameter end portion 37a of a large diameter support member 37a which is cylindrically shaped, and this support member is fixed to an auxiliary plate 21 on the dial side 13 of the timer is protected by a lever holder 38 for the drive wheel of the date indicator against losing weight.
    It can be seen that the lever for the drive wheel of the date indicator can rotate about the central axis C1 in the direction of C1 and C2, and it rotates in these two directions C1 and C2 between a reference position of the rotation P1 (see, for example 2) as the first rotational position and a rotational position P2 for the date initialization (monthly switching), see, for example, FIGS. 12A and 12B as the second rotational position respectively depending on the engaged state of a first date cam and a second date cam together with the first cam follower 35 and the second cam follower 36th
    The drive wheel 40 of the first date indicator has a main body 43 and a shaft portion 44, and this shaft portion is in a hole 31 d of the lever 30 on the side 31 a of the main body 31 of the lever in a small diameter portion 44 a of the shaft 44th is inserted at the side of the dial 13, and may rotate in a bore 43a of the main body 43 of the drive wheel of the first date indicator in a small-diameter region 44b in the shaft 44 on the side of the motherboard 20.
    In the drive wheel 40 of the first date indicator, which performs a full rotation in direction E1 once a day, driven by the teeth 28 on the idler gear and the teeth 41 for driving the first date indicator, when the lever 30 for driving the date indicator in his first rotational position (ie, the reference rotational position), the date finger 42 of the first date indicator 50 rotates one tooth. However, when the date display drive lever 30 is in the second rotational position P2 (date initialization, month changeover), the first date wheel drive wheel 40 rotates without engagement with the first date indicator 50.
    Similarly, the drive wheel 45 of the second date indicator has a main body 48 and a shaft 49, which is inserted on the one hand in a bore 31e in the lever 30 of the drive wheel for the date indicator on the side 31b of the end portion of the main body 31 of the lever, and Although inserted into a small diameter portion 49 a of the shaft 49 on the side of the dial 13, and on the other hand rotatably in a bore 48 a of the main body 48 of the drive wheel for the date indicator in a small diameter portion 49 b of the shaft 49 on the side of the motherboard 20 is.
    When the lever 30 for driving the date indicator in the first rotational position, i. the reference position, and the drive wheel 45 of the second date indicator, which performs once a full turn in the direction of F1, driven by the teeth 28 of the Datumumsrads on the drive teeth 46 of the second date indicator, then the drive wheel 45 of the second date indicator rotates without intervention However, if the lever 30 of the drive wheel of the date indicator is in the second rotational position P2 (date initialization, monthly changeover), the second date finger 47 advances the second date indicator 60 by one tooth.
    As is apparent from Figs. 4A and 4B, which illustrate the enlarged first date indicator 50, and additionally from Figs. 2, 3A and 3B, the first date indicator 50 has a first hub 51, a first toothing 52 of the date indicator , a first date cam 55, and a first date wheel 58.
    The first date indicator serration 52 is inserted into a small diameter portion 51a at one end of the hub 51 of the first date indicator. The first date disk 58 is fixed to a portion 51b at the outer end of the disk, for example by caulking. The hub 51 of the first date indicator has a central bore 51c into which the shaft is inserted so as to allow mutual rotation. The first date cam 55 is molded in one piece on the outer periphery of the hub 51 of the first date indicator. The gearing 52 of the first date indicator has a drive wheel which has a thickness T1 and is located on the first date indicator 50 in the direction of the housing bottom, not shown. The first date cam 55 is located at a distance G1, which corresponds to a thickness T2 of the first date cam 55, between the teeth 52 of the first date indicator and the first date plate 58th
    The teeth 52 of the first date indicator have ten teeth 53. A tooth 53a among these ten teeth 53 is thicker than the nine teeth 53b in the teeth 53 and is provided as a switching tooth. The switching tooth 53a has the same configuration as the other teeth 53b, except that the thickness T1 in the axial direction is greater than the thickness T3 of the other teeth 53b. In other words, in the case of the normal teeth 53b of the teeth 52 of the first date indicator, there is provided a gap G2 between the teeth 52 on the first date indicator and the first date plate 58, with respect to these distances satisfying the following relationship: T4 = T2 + (T1-T3 ).
    The first date wheel 58 is circular in shape and has ten digits on it, namely 1, 2, 3, 4, 5, 6, 7, 8, 9, and 0, which is the unit digit of a date D2, and they are arranged at equal intervals in a display area 58b of the display area 58a.
    The first date cam 55 has an arcuate cam surface 56 along a circle of constant diameter and a concave cam surface 57 defined by a concave portion with an arcuate base and having a small diameter; it is directed radially inwards. The concave cam surface 57 is disposed between the numerals 0 and 1 in the position D2.
    The first date indicator 50 is fixed to the auxiliary plate 21 by means of a pin 22a so that it can rotate about a central axis J. The pin 22 a is attached to the auxiliary plate 21 by means of a retaining screw 22 b. The pin 22a goes into a mounting hole 21a in the auxiliary plate 21 and the central bore 51c in the hub 51 of the first date indicator, and it carries the hub 51 of the first date indicator, so that a rotation about the central axis J is possible.
    As shown in FIGS. 5A and 5B, which show the enlarged second date indicator 60, and also from FIGS. 2 and 3A and 3B, the second date indicator 60 has a hub 61, a cam profile 65, a Gearing 62 and a second date disc 68 on.
    The serration 62 on the second date indicator is inserted into a small diameter portion 61a at one end of the hub 61 of the second date indicator. The second date disc 68 is fixed with its outer end to an attachment area 61b, for example by caulking. The toothing 61 of the second date indicator has a central bore 61 c, in which the shaft is inserted in such a way that a mutual rotation is possible. The second date cam 65 is integrally formed on the outer periphery of the hub 61 of the second date indicator. The gearing 62 of the second date indicator has a spur gear which has a thickness T5 and is located on the second date indicator 60 on the side of the housing bottom, not shown. The second datum cam 65 is disposed at a distance G3 corresponding to a thickness T6 of the second datum cam 65, between the serration 62 of the second date indicator and the second date disc 68.
    The gearing 62 of the second date indicator has eight teeth 63.
    On the second date disc 68 are four digits 0,1,2 and 3 representing the tens digit of a date D1, and these four digits are duplicated, i. E. in the following form: 0, 1, 2, 3, 0, 1, 2, 3. They are located at the same distance on a display area 68b of the display area 68a. In this case, the second date disk 68 is octagonal. It can be seen from FIGS. 2 and 3A that even if a rotation central axis K of the second date disk 68 comes to rest in the vicinity of the rotation center axis J of the first date disk 58, it is possible to prevent the second disk 68, which is closer to the dial 13 than the first date dial 58, the digits of the unit D2 on the first date disc 58 covers.
    The second cam 65 has two arcuate cam surfaces 66a and 66b (which are referred to as reference 66 when it is not necessary to distinguish the two cam pieces) along a circle of constant diameter and with concave cam surfaces 67a and 67b (which as reference numeral 67 when both curved pieces need not be distinguished from each other, ie, as a common reference numeral) and defined by two concave portions with arcuate bases and a small diameter, these curved pieces being directed radially inwards. The concave cam surfaces 67a and 67b are located between the numbers 0 and 1 on the display.
    In a manner similar to the first date indicator 50, the second date indicator 60 is attached to the auxiliary plate 21 by means of a pin 22a so as to be able to rotate about the central axis K. The pin 22 a is fixed to the auxiliary plate 21 by means of the retaining screw 22 b. The pin 22a goes into a mounting hole 21b in the auxiliary plate 21 and the central bore 61c on the hub 61 of the second date indicator, and bears the hub 61 of the second date indicator, such that rotation about the central axis K is possible.
    As described above, the lever 30 on the drive wheel of the date indicator receives the rotational force in direction C1 due to the rotational driving force applied to the gears 41 and 46 of the drive wheels 40 and 45 on the first and second date indicators, respectively. to the minimum of one of the first and second cam followers 35 and 36 comes into contact with the first and second switching cam 55 and 65 on the first and second date indicator 50 and 60. In addition a return spring 39 is provided, if necessary, to bring at least one of these cam followers 35 and 36 into intimate contact with the corresponding cam surfaces 55 and 65 on the first and second date indicators 50 and 60, and this return spring may apply its resilient biasing force to the lever 30 of the drive wheel of the date indicator. The spring may for example be attached to the auxiliary plate 21 or to another part, as indicated by the dashed line in FIG. 2. In this case, the lever 30 of the drive wheel of the date indicator is part of a switching mechanism that still contains the two cams 55 and 65. When the first cam follower 35 of the lever 30 on the drive wheel of the date hand comes in contact with the arcuate cam surface 56 of the first cam 55 of the first date indicator 50, or if the second cam follower 36 on the lever 30 of the drive wheel of the date hand in contact with the arcuate cam 66 of second cam 65 comes on the second date indicator 60, the lever 30 is located on the drive wheel in the reference position of rotation P1 as the first rotational position. The shift mechanism, of which the lever 30 is integral with the drive wheel, is in the operative position of the first drive wheel 40, and the first unlock finger 42 on the first drive wheel 40 of the date indicator engages the teeth 53 of the gear 52 on the first date indicator 50 and rotates the teeth 52 on the first date indicator every day in the direction of J1 by one tooth on.
    In this case, when the lever (30) on the drive wheel of the date indicator is in reference position P1, the drive wheel 45 of the second date indicator is in a non-working position, and the second date Entsperrfinger 47 on the drive wheel 45 of the second date indicator rotates without engagement with the gearing 62 on the second date indicator 60. Therefore, the second date indicator 60 is also not affected by the second drive wheel 45.
    When the first cam follower 35 on the lever 30 of the drive wheel of the date indicator enters the concave portion 57 of the first cam 55 on the first date indicator 50 and the second cam follower 36 on the lever 30 of the drive wheel in the concave portion 67 of the second cam 65 on the second When the date indicator 60 enters, the lever 30 on the drive wheel is in the position P2 for initializing the date (monthly changeover) as the second rotational position (the changeover mechanism containing the lever 30 on the date wheel drive wheel is in a second release position), the drive wheel 45 of the second date hand is in the operative position and the second date unlock finger 47 on the second drive wheel 45 engages the teeth 63 of the tooth 62 on the second date hand 60 and rotates the tooth 62 of the second date hand in the direction of K1 one tooth each day. When the lever 30 on the drive wheel is in the rotational position P2 (Date Initialization, Month Changeover), the first drive wheel 40 is in a first non-operating position, and the first date unlock finger 42 on the drive wheel 40 of the first date indicator rotates without engagement with the teeth 52 on the first date indicator 50. Therefore, the first date indicator 50 is also not affected by the first drive wheel 40.
    The following results from FIGS. 2, 3A and 6A, 6B and 6C. The intermediate date Entsperrrad 70 has a disc-shaped main body (hub) 72 with a central bore 71 and a first unlocking toothing 73 and a second unlocking toothing 74. In addition, similarly to the first date indicator 50 and the second date indicator 60, the intermediate date unlocking wheel 70 is fixed to the auxiliary plate 21 so as to rotate thereon about a central axis M, and attachment is by the pin 22a which is in the center Bore 71 is inserted so that a mutual rotation can take place, and by the retaining screw 22b.
    The first intermediate date unlocking toothing 73 includes a narrow and thick tooth 75 as the first unlocking tooth engageable with the switching tooth 53a on the first date indicator 50 and a wide concave portion 76 spaced circumferentially between the teeth 75 can intervene. The second unlocking toothing 74 includes a wide and thin tooth 77 as the second unlocking tooth that can engage the teeth 63 on the second date indicator 60 without engagement with the teeth 53 of the first date indicator 50 and a narrow concave portion 78 , which can be seen at a small distance, seen in the circumferential direction, between the teeth 77. In addition, the first intermediate date unlocking toothing 73 and the second intermediate date unlocking toothing are arranged such that the rear edges of the teeth 75 and 77 coincide with each other when viewed in a rotational direction M1 of the date unlocking wheel 70, that is, the front ones Edges of the concave portions 76 and 78 coincide with each other. However, when viewed from the center of rotation M of Entsperrrades 70, the relative position of the teeth 75 and 77 of the two gears 73 and 74 depending on the mutual position of the rotation center axes J and K of the first and second date indicator 50 and 60 and the relative position relative to the teeth 52 of the teeth 51 on the first date indicator 50 and the teeth 62 of the teeth 61 on the second date indicator 60.
    From Fig. 7A, which shows an enlarged part of the Entsperrverzahnung 73, and from the Fig. 3A shows the following: The first date unlocking toothing 73 can engage with the switching tooth 53 a of the teeth 52 on the first date indicator 50 engages but not with the other teeth 53b of the teeth on the first date indicator. The second unlocking gear 74 does not engage with the serration 52 on the first date indicator. Both the first date unlocking toothing 73 and the second date unlocking toothing 74 are in mesh with the toothing 62 on the second date indicator.
    In this example, the first date unlocking gear 73 and the second intermediate unlocking gear 74 each have eight teeth 75 and 77, respectively. However, the number of teeth 75 and 77 may be greater or less than eight.
    The rotational position of the first date indicator 50 is stepwise determined by the first date pawl 81, which engages the gearing 52 of the first date indicator and performs a shift and stop operation. The rotational position of the second date indicator 60 is incrementally determined by the second date pawl 86, which engages the gearing 62 of the second date indicator and performs a shift and pause operation. In addition, the date ratchet structure 80, which includes the first pawl 81 and the second pawl 86, is fastened to the auxiliary plate 21 with screws by means of a rear anchor structure 88 and a holder 89 of the date ratchets.
    Let us now discuss the operation of the large date display mechanism 1 on the timer 2 according to a preferred embodiment of the present invention, which is configured as above.
    In the normal state in which neither forwarding nor initialization (month switching) takes place in the positions D1 and D2, the date large-display mechanism 1 is in a state S1 shown in FIG. In this figure, the state on day 05 is shown as an example.
    As shown in Fig. 8, in the normal state S1 in which the positions D2 and D1 of the date slices 58 and 68 of the first and second date indicators 50 and 60 in the date window 14 of the dial 13 are 5 and 0, respectively, occurs the first cam follower 35 and the second cam follower 36 on the drive wheel lever 30 are in contact with the arcuate cam surfaces 56 and 66 on the first date indicator 50 and the second date indicator 60, respectively, and the mechanism is in its first rotational position P1 (reference position of rotation). in that the lever 30 of the drive wheel can move about the central axis C in the direction C2. Therefore, at the state S1, the intermediate date wheel 27 rotates clockwise about the central axis C, that is, in the clockwise direction. in direction C1, the first date indicator drive wheel 40, which meshes with the intermediate teeth 28 on the first timing indicator toothing 52, rotates once a day in the direction E1, and the first date finger or date unlock finger 42 on the drive wheel 40 of the first one The date indicator meshes with the teeth 53 of the serration 52 on the first date indicator in the direction J1 so that the first date indicator 50 is indexed once a day by one tooth of the serration 52 on the first date indicator.
    In the state S1, which is shown in Fig. 8, the switching tooth 53a is located on the teeth 52 of the first date indicator in a position which is remote from the unlocking teeth 73 of the Entsperrrads 70, even if the teeth 52 on first date indicator is indexed by a tooth in the direction of J1. The rotation is not transferred to the intermediate unlock wheel 70 (the first unlock gear 73), the intermediate date unlock wheel 70 is held in the hold position, and the intermediate date unlock wheel 70 stops the second date indicator 60, as described above. That is, since the teeth 53b except for the switching tooth 53a of the teeth 53 of the teeth 52 on the first date indicator are thin and their position is switched in the thickness direction. The teeth 53b therefore do not intermesh with the gears 73 and 74 of the intermediate date unlocking wheel 73. Moreover, the lever 30 on the date wheel drive wheel is in the S1 state in the rotational position P1, and the second date finger 47 (the second date unlock finger) on the Drive wheel 45 of the second date indicator is disengaged from serration 62 on the second date indicator on the second date wheel 68 even when drive wheel 45 of the second date indicator rotates once a day in direction F1, driven by the rotation of intermediate date wheel 27, and the second Date indicator 60 is not rotated by the drive wheel 45 on the second date indicator. Therefore, the second date indicator 60 is held in its holding position. Even if the position D2 displayed on the first date dial 58 of the first date indicator 50 advances upon release of the date, the position D1 displayed on the second date dial 68 by the second date indicator 60 remains unchanged. In the present example, position D1, which remains unchanged, is a 0.
    While the date release is repeated until the day 9, the large date display mechanism 1 is kept in the state S1. This also applies to the date display from day 1 to day 9, the date display from day 10 to day 19, and the date display from day 20 to day 29.
    Reference is now made to Fig. 9A, which shows the state on day 9. In this case, the parts which are in the mechanism 1 for large display of the date are also in the state S1, as already described above, but the mechanism here starts the indexing in a rotational position Q1, in which the switching tooth 53a of the teeth 53 in the Teeth 52 engages the first date indicator 50 in the teeth 75 of the intermediate release teeth 73 of the intermediate release wheel 70.
    From FIG. 9B, in addition to the process of FIG. 9A, namely, when the day 9 has almost expired, the serration 52 on the first date indicator is indexed by the first date finger 42 in the direction of J1 by one tooth, namely, caused by the rotation the drive wheel 40 of the first date indicator in the direction of E1 simultaneously with the rotation of the intermediate date wheel 27 in the direction of C1. As a result of the rotation in the direction of J1, the first date indicator 50 rotates the toothing 73 on the intermediate date-release wheel 70 in the direction M1, caused by the toothed tooth 53a of the teeth 52 of the first date indicator. Due to the rotation of the date-release toothing 74 in the direction M1 simultaneously with the rotation of the intermediate date-release wheel 70 in direction M1, the toothing 62 rotates on the second date indicator, which meshes with the date-release toothing 74, in direction K1 and thus the second date disc 68 of the second date indicator 60 in the direction K1, wherein the switching release and the handover are performed.
    As shown in Fig. 10A, the data release is continued by activating the drive wheel 40 of the first date indicator until the shift dogs 82 and 87 of the first and second date ratchets 81 and 86 respectively over the tips of the teeth 53 and 63, respectively the corresponding teeth 52 and 62 have run on the first and second date indicator.
    When the leading ends, i. the tips of the shift dogs 82 and 87 of the first and second date ratchets 81 and 86, respectively, pass over the tips of the teeth 53 and 63 of the respective first and second gears 52 and 62, respectively, the rotation of the gear 52 on the first date indicator in the direction of J1 due to the date release finger 42 on the drive wheel 40 of the first date indicator stopped. Therefore, even if the rotation in the direction M1 of the release gear 73 at the intermediate date release wheel 70 is stopped due to the shift tooth 53a, the shift pawl portions 82 and 87 fall on the first and second date pawls 81 and 86, respectively, as shown in Fig. 10B between adjacent teeth 53 and 53 and adjacent teeth 63 and 63 of the gears 52 and 62, respectively, on the first and second date indicators simultaneously with the shifting of the first and second date ratchets 81 and 86, respectively prompted to complete the date release process. In this way, when the date-releasing operation is completed, the positions D1 and D2 indicating 1 and 0 in the date window 14 are completed, and now the date 10 is displayed.
    The date release described above is repeated, and then the date 30 is displayed. If the displayed date in D2 is a 1, i. On the day 01, day 11 or day 21, the first cam follower 35 can not rest against the arcuate cam surface 56 of the first date indicator 50 but against the concave cam surface 57. However, since the second cam follower 36 is in abutment with the arcuate control surface 66 on the second date indicator 60, the lever 30 is retained on the drive wheel of the date indicator in the relational position P1.
    Further, when the day 29 is switched to the day 30, the second date indicator 60 rotates in the direction of K1, which is shown in Fig. 11A, for example. Therefore, a leading edge 67b at the end of a base portion 67a of the concave cam 67 of the second cam 65 on the second date hand 60 reaches a position opposite the second cam cam 36 on the lever 30 of the date wheel drive wheel.
    The situation where the above-described date release is repeated and the state is switched to the state of the date 31 on the day 30 will be described, referring to Figs. 11A, 11B, 12A and 12B.
    When the day 30 is advanced to the day 31, the teeth 52 on the second date indicator 60, as shown in Figs. 11A and 11B, rotated by the first date finger 42 in the direction of J1, caused by the rotation of the drive wheel 40 on first date indicator 50 in the direction of E1, simultaneously with the rotation of the intermediate date wheel 27 in the direction of C1. Due to this, the first cam 55 rotates in the direction J1.
    Referring to Fig. 11B, when the shift claw 82 of the first date pawl 81 of the shift pattern 80 reaches and passes by the tips of the teeth 53 of the rack 52 on the first date hand, the shift dog 82 is at the first date Switch pawl 81, as shown in Fig. 12A, between the adjacent teeth 53 and 53 of the gearing 52 on the first date indicator to control the gearing 52 of the first date indicator. Therefore, the date indications D1 and D2 in the date window 14 of the dial 13 are switched from 30 to 31, and the display of the date display is completed from 30 to 31.
    At this time (see Fig. 12A) reaches a front control edge 57 b at the end of the base portion 57 a of the concave control surface 57 on the first cam 55 of the first date indicator 50 a position in which this edge is opposite to the first cam follower 35. Therefore, both the first cam follower 35 and the second cam follower 36 of the lever 30 on the drive wheel of the date indicator face the end portions 57b and 67b respectively at the leading edge of the base portions 57a and 67a of the concave cam surfaces 57 and 67 of the corresponding first and second cam plates 55 and 55, respectively 65 opposite. Therefore, as shown in FIG. 12B, the lever 30 on the date wheel drive wheel rotates in the direction C1 from the reference position P1 to the position P2 where rotation advances, and the front end portions of the first and second cam followers 35 and 35, respectively. 36 fall to the front end edge 57b and 67b in the base portion 57a and 67a of the concave cam surfaces 57 and 67, respectively. Therefore, the first date finger 42 of the drive wheel 40 of the first date indicator is separated from the serration 52 on the first date indicator 50 and is released. The first date finger 42 approaches the toothing 62 on the second date finger 47 of the second date indicator drive wheel 45 and engages with this toothing.
    Then, the date display changes from the date 31 to the date 01, i. E. by enabling during the month switchover, simultaneously with the date initialization. This will now be described in detail with reference to Figs. 13A, 13B, 14A and 14B.
    In the display 31, as described above and shown in Fig. 12B, the numeral 3 on the second date disc 68 of the second date indicator 60 in the date window 14 at the tens (second digit of the date) D1 and a numeral 1 on the first date wheel 58 of the first date indicator 50 in the date window 14 as the one-digit (first digit) of the date D2 visible. In addition, the 1 is in the starting rotational position P2 for advancement, in which the lever 30 is further rotated in the direction of C1 on the drive wheel of the date indicator. The first date finger 42 of the first drive wheel 40 of the date indicator separates from the gearing 52 on the first date indicator 50 and can not engage the gearing 52. The second date finger 47 on the drive wheel 45 of the second date indicator can now engage the toothing 62 on the second date indicator 60.
    Fig. 13A shows this state. As the time progresses, the drive wheel 45 of the second date indicator rotates in the direction F1, caused by the rotation of the intermediate date wheel 27 in the direction of C1. The second date finger 47 is engaged with the teeth 63 of the serration 62 of the second date indicator 60. As shown in Figs. 13A and 13B, the second date finger 47 rotates the serration 62 of the second date indicator in the direction K1. In addition, the serration 62 on the second date indicator rotates the second unlocking gear 74 of the intermediate date unlocking wheel 70 in the direction M1 simultaneously with the rotation in the direction K1.
    When the shift range 87 of the second pawl 86 reaches and crosses the tips of the teeth 63 of the teeth 62 on the second date indicator, as shown in FIG. 13B, the shift range 87 of the second shift pawl 86 drops as shown in FIG is between two adjacent teeth 63 and 63 of the gearing 62 on the second date indicator when the second pawl 86 performs the indexing and stopping operation and rotates the rotation of the gearing 62 on the second date indicator to the holding position. At this time, the second cam follower 36 on the lever 30 of the drive wheel of the date handler reaches the arcuate cam surface 66 with the side surface 67d at the trailing edge from the base 67a of the concave cam surface 67 on the second cam 65, since the second date indicator 60 is in the direction K1 starting from the state shown in Fig. 13B, in the state shown in FIG. 14 can move. At this time, the lever 30 rotates on the drive wheel of the date indicator about its central axis C in the direction C2 and then comes back to the first rotational position (rotational reference position) P1.
    In addition, the following occurs: Simultaneously with the rotation of the second date indicator 60 in the direction of K1, when the switching and holding portion 87 of the second pawl 86 between adjacent teeth 63 and 63 of the teeth 62 on the second date indicator falls, the rotation of the teeth 62nd on the second date handler, and the second date hand 68 on the second date hand 60 is also rotated in the direction of K1, and a display change takes place, starting from the state in which a 3 appears in the date window 14 (state of Figure 13A). and the tens digit (second digit) of a data D1 indicates the state where a 0 appears in the date window 14 (state of FIG. 14) in which the state shown in FIG. 13B is exceeded. That is, the tens digit (second digit) of a date D1 changes from 3 to 0, and the positions D1 and D2 in the date window 14 of the date large display mechanism 1 change from 3 and 1, respectively, to 0 and 1, i. from day 31 to day 01. In mechanism 1 for large display of the date, a 1 is accordingly displayed at the one-digit (first digit) of a date D2 without change. The month switch or date initialization (change from 31 to 01) is completed while the first date slice 58 of the first date indicator 50 does not undergo any change.
    Until the second date indicator 60 has been indexed and thus returns to the initial position, the intermediate Date Entsperrrad 70, which meshes with the teeth 62 on the second date indicator 60 rotates in the second date Entsetzverzahnnung 74 in the direction M1. In a state where the display in the date window 14 is 01, the rotational position of the first and second date indicators 50 and 60 in the direction of J1 and K1, respectively, is determined by the first and second date switching pawls 81 and 86, respectively 50 and 60 influenced. The rotational position of the intermediate date unlocking wheel 70 in direction M1 is determined by the unlocking toothing 74 which meshes with the toothing 62 on the second date indicator 60. Therefore, the first and second date indicators 50 and 60, respectively, and the intermediate date unlock wheel 70 return to their home positions. According to the subsequent operation of the drive wheels 40 and 45 on the first and second date indicators, which are mounted on the lever 30 of the drive wheel of the date indicator, in a similar manner back to its initial position (reference position) P1, and the display operation in which the mechanism 1 for Large display of the date is used is repeated.
    权利要求:
    Claims (10)
    [1]
    1. Mechanism (1) for large display of a date, comprising:a first date indicator (50) having a first toothing (52) with a plurality of teeth (53), one of which is a shift tooth (53a) with a switching function, and a first date disc (58) on which the one digit of the date is displayed ;a first drive indicator (40) for the first date indicator (50) having a first date finger (42) and executing a full revolution once a day, and when brought into the operative position for the first date indicator (50) where it coincides the gearing (53) on the first date indicator (50) meshes with the first date finger (42) and the first date indicator (50) meshes one tooth (53) of the gearing (52) on the first once a day Date indicator (50) advances;an intermediate date unlocking wheel (70) which is indexed by the switching tooth (53a) by a tooth when it is in engagement with the switching tooth (53a) of the toothing (52) of the first date indicator (50);a second date indicator (60) having a second toothing (62) with a plurality of teeth (63) and rotated about a tooth (63) upon rotation of the intermediate date unlocking wheel (70), and a second date disc (68) possesses, on which the tens digit of the date is indicated;a second drive indicator (45) for the second date handler (60) provided with a second date finger (47) performs a full turn once a day, and when brought into the operative position for the second date handler (60) where it can be engaged with the serration (62) on the second date indicator (60), is also brought into engagement by the second date finger (47), and the second date indicator (60) is brought around a tooth (63) once a day (62) advances on the second date indicator (60);a shift mechanism (30) on which the drive wheels (40; 45) of the first date indicator (50) and the second date indicator (60) are arranged to a) between a first release position in which the drive wheel (40) of the first date indicator (50) is brought into operating position and the drive wheel (45) of the second date indicator (60) is brought into a non-operating position, in which the second date finger (47) on the drive wheel (45) of the second date indicator (60) and the toothing ( 62) of the second date indicator (60) are prevented from engaging each other, and b) a second release position in which the second date finger (47) on the drive wheel (45) of the second date indicator (60) is moved to the operating position of the drive wheel (45 ) of the second date indicator (60) in which it meshes with the serration (62) on the second date indicator (60) and the drive wheel (40) of the first date indicator (50) into a not operating position is brought in which the first date finger (42) on the drive wheel (40) of the first date indicator (50) is prevented from engaging with the toothing (52) on the first date indicator (50).
    [2]
    2. Large date display mechanism according to claim 1, wherein the toothing (52) on the first date indicator (50) is provided with ten teeth (53).
    [3]
    3. mechanism for large display of a date according to claim 1 or 2,wherein the switching tooth (53a) on the toothing (52) of the first date indicator (50) is thicker than the other teeth (53) located in the toothing (52) of the first date indicator (50);wherein said intermediate date unlocking wheel (70) has a first date unlocking toothing (73) having a plurality of first unlocking teeth (75) and a second date unlocking toothing (74) having the same pitch as that of said first date unlocking toothing (73), which completely covers the first date unlocking toothing (73) and has a plurality of second date unlocking teeth (77) in which the width of a base portion of the second date unlocking teeth (77) is smaller and the thickness of the second date unlocking teeth (77) is also smaller smaller than that of the first date unlocking teeth (75);the toothing (62) on the second date indicator (60) meshes with the second date unlocking teeth (77); andthe switching tooth (53a) in the toothing (52) of the first date indicator (50) meshes with the first intermediate date unlocking teeth (75).
    [4]
    The date large display mechanism of any one of claims 1 to 3, further comprising: a first date pawl (81) that causes the gearing (52) on the first date indicator (50) to perform the shifting and stopping operation ; and wherein a second date pawl (86) causes the gearing (62) on the second date indicator (60) to perform the act of switching and stopping.
    [5]
    5. mechanism for large display of a date according to one of claims 1 to 4in which the switching mechanism further comprises the following components:a lever (30) on the first drive wheel (40) of the first date indicator (50) having a main body (31) comprising the first drive wheel (40) of the date hand (50) and the drive wheel (45) of the second date hand (60) rotatably supported, and having a first cam follower (35) and a second cam follower (36), which are integrally mounted on the main body (31) of the lever (30); a first date cam (55) integral with the toothing (52) of the first date indicator (50) and against which the first cam follower (35) abuts; anda second date cam (65) integral with the toothing (62) of the second date indicator (60) and abutting the second cam follower (36).
    [6]
    6. mechanism for large display of a date according to claim 5,in which the lever (30) on the first drive wheel (40) of the first date indicator (50) is rotated in such a way that the first cam follower (35) enters a concave area of the first date cam (55) and the second cam follower (36 ) engages a concave portion of the second date cam (65);wherein the switching mechanism is in the second release position; andin which the toothing (62) on the second date indicator (60) advances the drive wheel (45) of the second date indicator (60) by one tooth (63), so that the mechanism is returned to an initial position.
    [7]
    The date large display mechanism of claim 5 or 6, further comprising:Spring means (39) which applies its spring force to the main body (31) of the lever (30) in a direction from a first rotational position in which the main body (31) of the lever (30) is located when the switching mechanism is in the first release position is after a second rotational position in which the main body (31) of the lever (30) is when the switching mechanism assumes its second release position exert.
    [8]
    8. Large date display mechanism according to any one of claims 5 to 7,wherein a rotation center axis of the lever (30) on the first drive wheel (40) of the first date indicator (50) having a rotation center axis of the intermediate date wheel, the rotation of a hour indicator on the drive wheels (40; 45) of the first and second date indicator (50; 60) transmits, coincides.
    [9]
    The mechanism for large display of a date according to any one of claims 1 to 8,wherein the toothing (52) of the first date indicator (50) has 10 teeth; andthe toothing (62) of the second date indicator (60) is provided with 8 teeth.
    [10]
    10. Timepiece (2), in which the mechanism for large display of a date according to one of claims 1 to 9 is installed.
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    同族专利:
    公开号 | 公开日
    CN102650849A|2012-08-29|
    JP2012173160A|2012-09-10|
    CH704532A2|2012-08-31|
    JP5615733B2|2014-10-29|
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    JPS5146049Y2|1971-08-19|1976-11-08|
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    CN201289584Y|2008-11-12|2009-08-12|天津海鸥表业集团有限公司|Calendar indication mechanism for watch|JP6661379B2|2016-01-13|2020-03-11|セイコーインスツル株式会社|Jumper mechanism, movement and clock|
    法律状态:
    2017-09-29| PL| Patent ceased|
    优先权:
    申请号 | 申请日 | 专利标题
    JP2011035998A|JP5615733B2|2011-02-22|2011-02-22|Big date display mechanism and timepiece having the mechanism|
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