• 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:
    The present invention relates to a jumper mechanism, a movement, and a timepiece contributing to suppress excessive rotation of a wheel due to an external force, while eliminating any reduction in its life. In order to solve this problem, there is provided a jump restriction member (54) that oscillates about a pivot axis (O3) and is made to engage and disengage from a rotating day (34). around a center axis (O1) to release the rotation of the day star (34) by jumps; and a pawl (55) configured to oscillate integrally with the jump restriction member (54) about the pivot axis (O3) and able to contact the day star (34). When the jump restriction member (54) or pawl (55) approaches the star of days (34), the other of these elements moves away from the star of days (34).
    公开号:CH712030A2
    申请号:CH00037/17
    申请日:2017-01-12
    公开日:2017-07-14
    发明作者:Arakawa Yasuhiro
    申请人:Seiko Instr Inc；
    IPC主号:
    专利说明:

    Description
    BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a jumper mechanism, a movement, and a timepiece. 2. Description of the Prior Art [0002] Conventionally, there are known timepieces equipped with calendar mechanisms indicating schedule information relating to the calendar (for example, the month, the day, or the day of the week). by means of an indicator (such as a calendar hand), such as those described, for example, in JP-UM-B-63-187 089 or JP-UM-B-63 -10,483. A calendar mechanism of this type is equipped, for example, with a day star with a daytime day hand, a date indicator driving wheel rotating the star of days, and a jumper of date releasing the rotation of the star of days by jumps.
    The date jumper is able to swing towards the star of days, and in the opposite direction. The date jumper is applied against the star of days by a jumping spring.
    In this architecture, when the star of days rotates through the rotation of the date indicator driving wheel, the date jumper is pushed back by the teeth of the star of days, by which the The date jumper pivots against the spring force of the jumper spring. Therefore, the commitment between the date jumper and the star of days is released. Then, when it overcomes the teeth of the star of days, the date jumper pivots towards the star of days because of the force of stress of the jumping spring. As a result, the date jumper is again engaged with the star of days. As a result, the star of days only rotates by one tooth, thanks to which the day's needle turns a day.
    According to the state-of-the-art solution known from the prior art described above, when an external force is applied to the timepiece because of a shock, a fall or the like it may be feared that the star of days may accidentally turn. More specifically, when the moment around the center of rotation of the star of days exceeds the urging force of the jumping spring, the engagement between the date jumper and the star of days is released. In particular, in a system called central date system, in which the day hand is arranged coaxially with the hour hand indicating hourly information (hour hand, minute hand, second hand, etc.). we adopt a thick day needle. Thus, due to the inertia of the day hand, the star of the day is likely to turn excessively (for example, two or more teeth). Therefore, one can fear the generation of a needle jump, in which the day's needle rotates two days or more. In this case, the user experiences inconvenience to use, and the date correction operation is rather difficult.
    In order to solve the problem above, it is possible to increase the biasing force of the jumper spring; however, in this case, a large load is applied to the date jumper, the star of days, etc., and one can therefore fear a substantial reduction in the life of the parts, etc.
    SUMMARY OF THE INVENTION
    The present invention has been designed to solve the problem above; an object of the present invention is to provide a jumper mechanism, a movement, and a timepiece helping to suppress an excessive rotation of a wheel due to an external force while at the same time eliminating any reduction in the duration of rotation. life.
    To achieve the object above, according to one aspect of the present invention, there is provided a jumper mechanism including: a jump restriction element which oscillates about a first axis and which is brought to s' engage and disengage a wheel rotating about a second axis to release the rotation of the wheel by jumps; and a pawl configured to oscillate integrally with the jump restriction member about the first axis and capable of contacting the wheel, and wherein, when an element selected from the jump restriction element and the ratchet approaches the wheel, the other of these elements moves away from the wheel.
    According to one aspect of the present invention, as the wheel rotates, the jump restriction member is pushed back from the wheel by a tooth of the wheel. Therefore, the jump restriction member oscillates from an indexing position where it is engaged with the wheel to adjust the rotation of the wheel to a release position where engagement with the wheel is released to allow rotation of the wheel. wheel. By repeating the operation described above, the jump restriction element restricts the rotational movement of the wheel.
    When the wheel rotates accidentally and involuntarily due to the influence of an external force, it is feared that the jump restriction element is pushed violently out of the wheel; in this case, before the jump restriction member is reestablished in its indexing position from the release position, the wheel tends to rotate excessively (e.g., of one or more teeth).
    However, in view of the risk mentioned above, according to the present aspect of the invention, when one element selected from the jump restriction element and the ratchet approaches the wheel, the other s away from the wheel, so that the pawl approaches the wheel by the same distance as that by which the jump restriction member withdraws from the wheel. Thus, when the wheel accidentally turns due to the influence of an external force, and the jump restriction member is pushed violently out of the wheel, it is possible to bring the pawl into contact with the wheel. Therefore, it is possible to suppress excessive rotation (for example, by two or more teeth) of the wheel.
    In addition, it is possible to eliminate any increase in load applied to the jumper mechanism and the wheel relative to the architecture in which the biasing force, for example, the jumper spring is increased so that the jump restriction element can no longer be greatly removed from the wheel due to an external force. Therefore, it is possible to suppress excessive rotation of the wheel while maintaining the required service life of the parts.
    According to the above aspect, the pawl may be brought into contact with the wheel when the jump restriction element moves in the radial direction orthogonal to the second axis and radially outwardly of the peripheral portion. the outermost of the wheel.
    According to this aspect, it is possible to prevent the ratchet and the tooth from coming into contact with each other at the time of a normal calendar advancement operation. Therefore, it is possible to prevent the application of any load between the ratchet and the wheel during the operation of advancing the calendar. Therefore, it is possible to rotate the wheel smoothly, and to eliminate any reduction in the life of the pawl and the wheel.
    According to the aspect above, the pawl can take a shape that makes it able to be inserted between adjacent teeth of the wheel.
    According to the present aspect, the pawl has a shape that allows it to be inserted between adjacent teeth (gutter / rib) of the wheel, so that it is possible that the pawl and the tooth are in contact with each other. with each other in the direction of rotation of the wheel. Therefore, it is possible to reliably regulate any excessive rotation of the wheel.
    According to the aspect above, the pawl may have a slot capable of housing the tooth of the wheel.
    According to this aspect, the tooth is housed in the slot of the pawl, thanks to which it is easier to stop the rotation of the wheel in a predetermined position when the wheel turns accidentally. Therefore, when the jump restriction member is repositioned in an indexed position, it is possible to reliably cause the insertion of the jump restriction member into the hollow portions (ribs) of the wheel.
    According to the above aspect, the pawl can be tapered towards its distal end in a plan view taken from the axial direction of the first axis.
    According to this aspect, the pawl is tapered towards its distal end portion, so that the pawl can easily enter the ribs of the wheel. Therefore, when the wheel tends to rotate excessively, it is possible to reliably engage the ratchet and the tooth of the wheel with each other.
    In addition, the tooth can be easily brought into sliding contact with the inclined surface of the pawl, so that, by the rotation of the wheel, it is possible to get the pawl out of the wheel. Therefore, it is possible to quickly return the jump restriction element in its indexing part.
    According to the above aspect, it is possible to provide a jumper spring applying the jump restriction element against the wheel.
    According to this aspect, the jump restriction member is applied against the wheel by the jumper spring, so that, even if the jump restriction member is pulled out of the wheel release position, he can quickly be restored to position in his indexing position. Therefore, it is possible to eliminate any excessive rotation of the wheel.
    Furthermore, a movement according to one aspect of the present invention may be equipped with the jumper mechanism as described above.
    Furthermore, a timepiece according to one aspect of the present invention may be equipped with the movement described above.
    With this architecture, it is possible to provide a movement and a timepiece whose operational qualities and reliability are improved.
    According to one aspect of the present invention, it is possible to eliminate any excessive rotation of the wheel while at the same time eliminating any reduction in the service life of the parts.
    BRIEF DESCRIPTION OF THE DRAWINGS
    [0028]
    Fig. 1 is a view from outside a timepiece according to one embodiment.
    Fig. 2 is a plan view of a movement according to this embodiment.
    Fig. 3 is a plan view of a calendar mechanism according to this embodiment.
    Fig. 4 is an operational explanatory view for illustrating the advancing operation of the date of the calendar mechanism according to this embodiment.
    Fig. 5 is an operational explanatory view for illustrating the date advance operation of the calendar mechanism according to this embodiment.
    Fig. 6 is an operational explanatory view for illustrating the manual jump operation of the calendar mechanism according to this embodiment.
    Fig. 7 is an operational explanatory view for illustrating the manual jump operation of the calendar mechanism according to this embodiment.
    Fig. 8 is a plan view of a calendar mechanism according to another alternative embodiment.
    Fig. 9 is a plan view of a calendar mechanism according to yet another alternative embodiment.
    DESCRIPTION OF THE EMBODIMENTS
    In the following, an embodiment of the present invention will be described with reference to the drawings.
    [Timepiece] [0030] FIG. 1 is an external view of a timepiece 1. In the following drawings, so that the latter are more legible, the components of the timepiece are partially omitted, and the components of the timepiece are represented in a simplified way.
    As shown in FIG. 1, in the timepiece 1 of the present embodiment, a movement 10 (see Fig. 2), a dial 2, different indicator hands 3 to 6, etc. are inserted in a timepiece case 7.
    Are added to the dial 2 a display portion of the hour 8 indicating time information, and a date display part 9 indicating daily information. In the present embodiment, the date display portion 9 is formed by imparting the numbers "1" to "31" on the outer peripheral side of the display portion of the hour 8 of the dial 2. The portion date display 9 is not restricted to numbers; he can also use graduations or similar.
    The various indicator hands 3 to 6 consist of hour hands (an hour hand 3, a minute hand 4, and a second hand 5) indicating the display portion of the hour 8, and a hand days 6 indicating the display part of the date 9. These indicator hands 3 to 6 are rotatably mounted around a center axis 01 (second axis) of the movement 10. In other words, the timepiece 1 of the This embodiment is of a type referred to as a "central date" in which the various indicator hands 3 to 6 rotate coaxially.
    The timepiece case 7 is equipped with a casing main body 11, a casing cover (not shown), and a cover glass 12. A ring 15 is provided at the level of the casing 11. a side surface portion of the housing main body 11 located at 3 o'clock (on the right side of Fig. 1). The ring 15 is used to operate the movement 10 from the outside of the casing main body 11. The ring 15 is integrated with a winding stem 16 inserted into the casing main body 11.
    [Movement] FIG. 2 is a plan view of the movement 10. In the following description, reference will be made to the "back face" of the movement 10 to designate the side of the cover glass 12 (dial side 2) of the workpiece housing. timepiece 7 relative to the plate 21 constituting the support of the movement 10, and reference is made to the "front face" of the movement 10 to designate the bottom side (that is to say the opposite side to the dial 2 ).
    As shown in FIG. 2, the movement 10 has the plate 21. The winding rod 16 mentioned above shown in FIG. 1 is inserted into a winding stem guide hole (not shown) of the plate 21. The winding stem 16 is used for date and time correction. The winding stem 16 is rotated about its axis and is movable in the axial direction. The distal end portion (the end portion of the side opposite the crown 15) of the winding stem 16 is connected to the movement 10.
    Are inserted at the front side of the plate 21 a front wheel 22, an exhaust-regulator (not shown) controlling the rotation of the front train 22, etc.. The front wheel 22 includes a movement barrel 23, a center wheel comprising a wheel and a pinion, a third wheel comprising a wheel and a pinion, and a second wheel also comprising a wheel and a pinion (none of these elements). however, is shown).
    The second needle mentioned above 3 is mounted to the second mobile of the gear train 22. The minute hand 4 is mounted on the center mobile. In addition, the aforementioned hour hand 5 is mounted to an hour wheel rotating with the rotation of the center wheel. The second mobile, the center mobile, and the hour wheel 25 are arranged coaxially with the center axis 01 of the movement 10. <calendar mechanism> [0039] A calendar mechanism 31 is inserted on the rear face The calendar mechanism 31 includes an intermediate date wheel 32, a date indicator driving wheel 33, a day star 34, a date jumper 35, a date jumper spring 36, and so on. In the calendar mechanism 31, the date jumper 35 and the date jumper spring 36 constitute a jumper mechanism according to the present embodiment. In fig. 2, reference numeral 41 indicates a calendar corrector work wheel for date correction, and reference numeral 42 indicates a day corrector wheel for the correction of the day of the week.
    The intermediate date wheel 32 is attached to the hour wheel 25 by pressing or the like. In other words, the intermediate date wheel 32 is rotatable in a clockwise direction (hereinafter referred to as the "CW" direction - acronym for "clockwise") around the axis center 01, solidarily to the hour wheel 25, In this case, the intermediate date wheel 32 rotates every 12 hours.
    The date indicator driving wheel 33 is counter-clockwise (to which reference is hereinafter referred to as the "CCW" direction - acronym for "counterclockwise") around an axis of rotation 02 parallel to the center axis 01. More specifically, the date indicator driving wheel 33 has a date wheel portion 44 and a date advancing finger 45.
    The date wheel portion 44 is meshing with the aforementioned intermediate date wheel 32. The number of teeth of the date wheel portion 44 is determined so that the date indicator driving wheel 33 performs a rotation every 24 hours.
    The date advancement finger 45 may engage with a tooth 51 of the star of day 34. The date advancement finger 45 rotates the star of days 34 once a day (at a time). hour point of 0 hours am) of an additional day (respectively of a tooth).
    FIG. 3 is a plan view of the calendar mechanism 31.
    As shown in FIG. 3, the day star 34 is arranged coaxially with the center axis axis 01. The day star 34 is capable of relative rotation with respect to the hour wheel 25 and the date intermediate wheel 32 in the "CW" direction about the center axis 01. The aforementioned day hand 6 (see Fig. 1) is mounted to the portion of the day star 34 located on the back side of the dial 2.
    The star of days 34 has 31 teeth 51. The teeth 51 can be engaged with the advancement finger of date 45 mentioned above. As described above, the day star 34 is advanced one tooth per day by the date advancement finger 45 of the date indicator driving wheel 33. Therefore, the day star 34 is a rotation in 31 days.
    The date jumper 35 can pivot about a pivot axis 03 arranged parallel to the center axis 01. The date jumper 35 has a jumper shaft 50 extending along the pivot axis 03, as well as a lever 53 fixed to the jumper pin 50, a jump restriction member 54 formed on the lever 53, and a pawl 55. In the description which follows, reference will be made, to designate the direction along the center axis 01, simply to the axial direction, as well as to the peripheral direction to designate the direction about the center axis 01, and finally to the radial direction to designate the direction orthogonal to the center axis 01.
    The lever 53 is formed in a V-shaped configuration extending from the center axis 01 according to a plan view taken from the axial direction. The lever 53 is equipped with a base 61 fixed to the jumper shaft 50, and a first arm 62 and a second arm 63 extending like a fork from the base element 61. The arms 62 and 63 are move away from each other as one moves toward their distal end portions in a plan view. In the example of FIG. 3, the width of the first arm 62 is greater than that of the second arm 63. In addition, although in the example of FIG. 3 arms 62 and 63 are of the same length, this should not be interpreted restrictively. In addition, the lever 53 can pivot with respect to the jumper axis 50.
    The jump restriction member 54 projects in the direction of the center axis 01 from the distal end portion of the first arm 62. In a plan view, the jump restriction member 54 is formed. in a triangular configuration (tapered configuration), i.e., gradually reduced in width as one approaches the center axis 01. In other words, the restriction element jump 54 has a rearward inclined surface 54a located in the direction of depth in the "CW" direction of the day star 34 from the vertex, and a forwardly inclined surface 54b in the CW direction from the star of days 34 from the top. The distal end portion of the jump restriction member 54 may be inserted between adjacent teeth 51 (rib 52) of the day star 34.
    With the pivoting of the date jumper 35, the jump restriction element 54 engages and respectively disengages the tooth 51 of the aforementioned star 34 to release the rotation by jumping the star 34. More specifically, when the date jumper 35 rotates in the CW direction about the pivot axis 03, the jump restriction member 54 enters the rib 52 (rib) of the star of the day 34 and engages tooth 51 in the circumferential direction (the rotational direction of the star of days 34). Therefore, the jump restriction element 54 regulates the rotation of the day star 34 (in the indexed position). On the other hand, when the date jumper 35 pivots in the CCW direction about the pivot axis 03, the jump restriction member 54 retracts from the rib 52 of the star of days 34, and the engagement between the jump restriction member 54 and the tooth 51 is released. Therefore, the jump restriction element 54 allows rotation of the star of the days 34 (in the unlocking position).
    The pawl 55 protrudes towards the center axis 01 from the distal end portion of the second arm 63. In a plan view, the pawl 55 is formed in a triangular configuration (tapered configuration) of which the width is gradually reduced as one moves towards the center axis 01. The distal end portion of the pawl 55 can penetrate the rib 52 of the star of days 34. In other words, the pawl 55 has a downwardly inclined surface 55a in the depth direction, in the CW direction of the day star 34 with respect to the apex, and a forward inclined surface 55b oriented in the CW direction of the star of days 34 from the top.
    With the pivoting of the date jumper 35, the pawl 55 can engage with the tooth 51 of the star of days 34. More specifically, when the date jumper 35 pivots in the CCW direction about the axis pivoting 03, it penetrates inside the rib 52 of the day star 34, and engages the tooth 51 in the peripheral direction. Therefore, the pawl 55 regulates the rotation of the day star 34. On the other hand, when the date jumper 35 pivots in the CW direction about the pivot axis 03, the pawl 55 retracts from the rib 52 of the day star 34, and the engagement between the pawl 55 and the tooth 51 is released. Therefore, the pawl 55 allows the rotation of the star of days 34.
    Thus, in the date jumper 35 of the present embodiment, the jump restriction element 54 and the pawl 55 are integrally formed with respect to the portion of the lever 53 located on either side of the Thus, the jump restriction element 54 and the pawl 55 oscillate integrally so that when one of the jump restriction element 54 and the pawl 55 approaching the center axis 01, the other moves away from the center axis 01. In this case, when the jump restriction element 54 is in the indexing position, the ratchet 55 is located externally, in the radial direction, of the outermost peripheral portion of the star of the days 34, and the engagement between the pawl 55 and the tooth 51 is released. On the other hand, the adjustment is made so that the pawl 55 is brought into contact with the tooth 51 when the top of the jump restriction element 54 moves outward in the radial direction of the tooth. outermost peripheral part of the star of days 34 (the outer side of the unlocking position) in the CCW direction around the pivot axis 03 of the date jumper 35. The outermost peripheral part of the star days 34 is the radial position at the top of the tooth 51 (represented by a dashed circle for example in Figures 3 to 9).
    As shown in FIG. 2, the spring jumper spring 36 is capable of elastically deforming in a plane direction orthogonal to the pivot axis 03. More specifically, the proximal end portion of the date jumper spring 36 is attached to the platen. 21. On the other hand, the distal end portion of the date jumper spring 36 is a free end. The distal end portion of the date jumper spring 36 abuts the first arm 62 from the side opposite the center axis 01, the date jumper 35 being interposed therebetween. The date jumper spring 36 pushes the date jumper 35 in the CW direction about the pivot axis 03. The position in which the date jumper spring 36 contacts the date jumper 35 can be changed according to the case as long as the date jumper 35 is pushed in the direction CW around the pivot axis 03. In this case, the second arm 63 may, for example, be away from the center axis 01.
    [Method of operation of the calendar mechanism] [0055] In the following, a method of operation for the calendar mechanism 31 described above will be described.
    First, we will describe the normal progress of date operation. In the following description, the initial state is the state in which the jump restriction element 54 is in the indexed position. In other words, in the initial state, the jump restriction element 54 enters the rib 52 of the day star 34, and the inclined surfaces 54a and 54b engage the teeth 51, whereby the day star rotation 34 is regulated. In the drawings, a chain line L indicates the reference position in the peripheral direction corresponding to the initial state.
    As shown in FIG. 2, in the timepiece 1 of the present embodiment, the rotational force of the motion cylinder 23 is transmitted to the hour wheel 25 through the front wheel 22. The rotational force transmitted to the hour wheel 25 is transmitted to the date indicator driving wheel 33 (the date wheel part 44) by the intermediate date wheel 32. Therefore, the date indicator driving wheel 33 rotates in 24 hours in the direction CCW around the axis of rotation 02.
    When the date indicator driving wheel 33 rotates, the date advancing finger 45 of the date indicator driving wheel 33 approaches the tooth 51 of the day star 34. After that at midnight ("0 am"), the date advancing finger 45 engages the tooth 51 of the date star wheel 34, rotating the star of the days 34 of a tooth in the CW direction around the center axis 01.
    Figs. 4 and 5 are operative explanatory views for illustrating the date advance operation of the calendar mechanism 31.
    As shown in FIGS. 3 and 4, as the day star 34 begins to rotate in the CW direction, the day star tooth 51 makes sliding contact with the forwardly inclined surface 54b of the jump restriction member 54. Therefore, the jump restriction element 54 moves to the outer side in the radial direction (i.e. away from the center axis 01). In other words, the jump restriction element 54 is pushed by the tooth 51 of the day star 34 upwards against the return force of the spring jumper spring 36, and the date jumper 35 is thus brought to rotate in the CCW direction. Therefore, as shown in FIG. 4, the jump restriction member 54 moves to the unlocking position where the engagement between the jump restriction member 54 and the tooth 51 is released. In the present embodiment, in the unlocking position, the vertices of the jump restriction member 54 and the tooth 51 are in contact with each other. On the other hand, in the unlocked state, although the pawl 55 has penetrated the rib 52 of the day star 34, there remains a gap between the pawl 55 and the tooth 51. In other words, in the unlocked state, the pawl 55 is not in contact with the tooth 51.
    As shown in FIG. 5, when the day star 34 turns a little further in the CW direction, the top of the jump restriction member 54 overcomes and protrudes the top of the tooth 51. Next, the date jumper 54 pivots in the CW direction due to the restoring force applied by the jumper spring 36. More specifically, the jump jumper 54 of the jumper 35 moves inward in the radial direction (i.e. in the direction of the center axis 01), with the rearward inclined surface 54a always in sliding contact with the tooth 51. Therefore, the jump restriction element 54 is restored to the indexed position again, while pushing the star of days 34 in the CW direction. In addition, the day star 34 rotates with one tooth, while the day hand 6 rotates parallel by one day. In this way, the date advance operation is completed.
    In what follows, we will describe the operation of needle jump suppression when an external force such as the shock due to a fall is exerted on the timepiece 1. FIG. 6 is a functional explanatory view for illustrating the needle-jump suppression operation for the calendar mechanism 31.
    As shown in FIGS. 3 and 6, when an external force is exerted on the timepiece 1, the star of the days 34 can rotate in the direction CW because, for example, of the inertia of the day hand 6. In In this case, as in the date advance operation described above, the date jumper 35 pivots in the CCW direction, whereby the jump restriction element 54 moves to the unlocking position. In this state, the day star 34 tends to rotate further in the CW direction (e.g., of one tooth or more) before the date jumper 35 is reestablished in the indexed position. Therefore, as shown in FIG. 6, the top of the jump restriction element 54 is separated from the top of the tooth 51.
    Here, in this present embodiment, the pawl 55 enters the rib 52 of the star of the days 34 being in the unlocking position. Thus, as the day star 34 attempts to rotate in the CW direction before the date jumper 35 is reestablished in the indexing position, the tooth 51 is brought into contact with the forward sloping surface. 55b in the peripheral direction. Therefore, any additional rotation (for example, of one tooth or more) of the star of days 34 in the CW direction is regulated. Then, the date jumper 35 pivots in the CW direction due to the restoring force exerted by the spring jumper spring 36. Therefore, as in the case of the operation of the date advancement described above, the pawl 55 retracts from the rib 52 of the day star 34. In addition, the jump restriction member 54 enters the rib 52 of the day star 34, and is engaged with the tooth 51. Therefore, the jump restriction element 54 reaches the aforementioned indexing position.
    FIG. 7 is an operational explanatory view for illustrating the needle-jump suppression operation of the calendar mechanism 31.
    As illustrated in FIG. 7, even in the case where the day star 34 is attempting to rotate in the CCW direction due to an external force, excessive rotation of the day star 34 is suppressed by operation similar to aforementioned needle jump removal operation. Indeed, as the day star 34 rotates in the CCW direction, the tooth 51 of the day star 34 slidably engages the rearwardly inclined surface 54a of the jump restriction member 54, so that that in parallel, the jump restriction element 54 of the date jumper 35 moves to the unlocking position. In this state, the pawl 55 has penetrated inside the rib 52 of the day star 34. Thus, when the day star 34 is striving to turn further in the CCW direction, the side inclined surface rearwards 55a of the pawl 55 is brought into contact with the tooth 51. Consequently, any additional rotation of the star of the days 34 is regulated. After that, the date jumper 35 pivots in the CW direction due to the restoring force exerted by the spring jumper spring 36, whereby the pawl 55 retracts from the rib 52 of the star of the day 34 , and the jump restriction element 54 reaches the aforementioned indexing position.
    In this way, in the present embodiment described above, there is provided a pawl 55 which oscillates integrally with the jump restriction element 54 around the pivot axis 03 and which can be brought into contact with one another. with the day star 34, and when one of the jump restriction element 54 and the pawl 55 approaches the center axis 01, the other of these elements pivots away from the center axis 01.
    According to this architecture, the pawl 55 approaches the center axis 01 of the same distance as the one of which the jump restriction element 54 moves from the center axis 01. day star 34 accidentally rotates due to the influence of an external force, and the jump restriction element 54 is pushed violently outwardly from the star of day 34, it is possible to bring the pawl 55 in contact with the day star 34. Therefore, it is possible to prevent the day star 34 from turning excessively (for example, from two or more teeth), and to prevent any jump. of the needle of the day 6 days of a day.
    In addition, compared to the configuration in which the restoring force applied by the spring jumper spring 36 is increased to prevent the jump restriction member 54 from moving to the unlocking position due to an external force, it is possible to prevent any increase of load applied to the date jumper 35 and to the star of the days 34. Therefore, it is possible to suppress any excessive rotation of the star of the days 34, while maintaining the life required for the parts involved in this jumper mechanism.
    In the present embodiment, when the top of the jump restriction element 54 moves outwardly, in the radial direction, from the outermost peripheral portion of the star of the days 34 into the CCW direction of the date jumper 35, the pawl 55 and the tooth 51 are brought into contact with each other.
    According to this architecture, it is possible to prevent the pawl 55 and the tooth 51 from coming into contact with each other at the time of normal advance operation of the date. Therefore, it is possible to prevent a load from being applied between the pawl 55 and the day star 34 at the time of normal date advance operation. Therefore, it is possible to rotate the star 34 days smoothly, and remove any reduction in the life of the pawl 55 and the star of days 34.
    According to the present embodiment, the pawl 55 has a shape allowing it to penetrate inside the rib 52 of the star of the days 34, so that it is possible to put the pawl 55 and the tooth 51 in mutual contact in the direction of rotation of the star of days 34 (peripheral direction). Therefore, it is possible to reliably control an excessive rotation of the day star 34.
    In the present embodiment, the pawl 55 is formed in a tapered configuration, the thickness gradually decreasing as one moves towards the distal end portion, so that that the pawl 55 can easily fit into the rib 52 of the day star 34. Therefore, when the day star 34 tries to turn excessively, it is possible to bring the pawl 55 and the tooth 51 of the star of the days 34 in contact with each other reliably.
    In addition, the tooth 51 can be easily brought into sliding contact with the inclined surfaces 55a and 55b of the pawl 55, so that it is possible to push the pawl 55 outward in the radial direction by By means of the rotation of the day star 34. Therefore, it is possible to restore the position of the jump restriction element 54 quickly in the indexing position.
    In the present embodiment, the jump restriction element 54 is applied against the day star 34 (the center axis 01) via the date jumper spring 36, so that , even if the jump restriction element 54 is moved to the unlocking position by the day star 34, it can easily be returned to the indexing position. Therefore, it is possible to suppress excessive rotation of the day star 34.
    In addition, the movement 10 and the timepiece 1 of the present embodiment are equipped with jumper mechanisms having the architecture described above, so that it is possible to perform a movement 10 and a timepiece 1 with better operational qualities and more reliable. (Variants) [0077] In the following, we will describe a variant of the present embodiment. Although in the embodiment described above, the pawl 55 is formed in a triangular architecture, this should not be interpreted restrictively; the configuration of the ratchet can be modified according to the case. In the following description, the components that are the same as those of the embodiment described above are indicated by the same reference numerals, and their description will be omitted.
    FIG. 8 is a plan view of the calendar mechanism 31 according to the proposed variant.
    For example, as in the case of the date jumper 101 shown in FIG. 8, the pawl 110 may be formed according to a trapezoidal architecture according to a plan view. More specifically, the pawl 110 has a depth-inclined surface 110a, a forwardly inclined surface 110b, and a connecting surface 110c connecting these inclined surfaces 110a and 110b to each other. The ratchet 110 has a size allowing it to penetrate, as a whole, into the rib 52 of the star of days 34.
    According to this architecture, the entire pawl 110 enters the rib 52, so that it is possible to reduce the space between the pawl 110 and the adjacent tooth 51. Therefore, when the star of the day 34 rotates accidentally, the rotation of the day star 34 can be easily stopped in a predetermined position. Therefore, when the jump restriction element 54 is repositioned in its indexing position, it is possible to cause the jump restriction element 54 to penetrate into the rib 52 of the day star 34 so as to reliable.
    权利要求:
    Claims (8)
    [1]
    FIG. 9 is a plan view of the calendar mechanism 31 according to another variant. The pawl 121 of the date jumper 120 shown in FIG. 9 has a slot 121a capable of housing the tooth 51 of the day star 34. Latent 121a consists of an outwardly oriented notch in the radial direction, and extends from the distal end surface of the pawl 121. The inner shape of the slot 121a according to the plan view corresponds to that of the external shape of the tooth 51. According to this architecture, the tooth 51 is housed in the slot 121a of the pawl 121, thanks to which, when the day star 34 accidentally rotates, the rotation of the day star 34 can be easily stopped in a predetermined position. Therefore, when the jump restriction element 54 is repositioned in an indexing position, it is possible to reliably induce the jump restriction element 54 to penetrate the rib 52 of the star of days. 34. [0084] The technical scope of the present invention is not restricted to that of the embodiments described above, but allows various other alternative variants without departing from the scope of the spirit of the present invention. For example, although in the embodiment as well as the variants described above, the present invention applies to a mechanical timepiece 1, this should not be interpreted restrictively; the present invention may also be applied to an analog quartz timepiece. Although in the embodiment described above the present invention is applied to a jumper mechanism in charge of performing the date advancement operations, and more particularly the date, this should not be interpreted in a manner that restrictive either; the present invention can also be applied to a jumper mechanism performing other advancement operations for a calendar mechanism, such as for the day of the week, the month, etc. Although in the embodiment described above the jumper mechanism of the present invention is applied to a timepiece 1 of central date type, this should not be interpreted restrictively. For example, the day hand 6 could also be arranged in a position offset from the center axis 01. Although in the embodiment described above the jump restriction element 54 and the pawl 55 are integrally formed via the lever 53, the jump restriction member 54 and the pawl 55 may be formed separately from each other as long as the jump restriction member 54 and the ratchet 55 oscillate in solidarity with one another. Although in the embodiment described above the pawl 55 is brought into contact with the tooth 51 of the star of the days 34 in the peripheral direction, this should not be interpreted restrictively. For example, the pawl 55 and the star of the days 34 may come into contact with each other in the radial direction. Although in the embodiment described above the pawl 55 and the tooth 51 come into contact with each other when the top of the jump restriction element 54 moves in the opposite direction. in the radial direction, relative to the outermost peripheral part of the star of days 34, this should not be interpreted restrictively either. For example, the pawl 55 and the tooth 51 may come into contact with each other as the jump restriction member 54 reaches the unlocking position. Except for the foregoing, the components of the embodiment described above may be replaced by well-known components as appropriate without departing from the scope of the spirit of the present invention, and the variants described above can be combined with each other if needed. claims
    A jumper mechanism comprising: a jump restriction member (54) which oscillates about a first axis (03) and which is made to engage and disengage from a wheel rotating about a second axis ( 01) to release the rotation of the wheel by jumps; and a pawl (55, 110, 121) configured to oscillate integrally with the jump restriction member (54) about the first axis (03) and contacting the wheel, wherein when an element selected from jump restriction member (54) and ratchet (55, 110, 121) approaches the wheel, the other moves away from the wheel.
    [2]
    A jumper mechanism according to claim 1, wherein the pawl is brought into contact with the wheel when the jump restriction member (55, 110, 121) moves in a radial direction orthogonal to the second axis (01) and radially outwardly of the outermost peripheral portion of the wheel.
    [3]
    The jumper mechanism according to claim 1 or 2, wherein the pawl (55, 110) is configured such that it can fit between adjacent teeth (51) of the wheel.
    [4]
    4. A jumper mechanism according to claim 1 or 2, wherein the pawl (121) has a notch (121a) capable of housing a tooth (51) of the wheel.
    [5]
    5. jumper mechanism according to one of claims 1 to 4, wherein the pawl (55) is tapered towards its distal end in a plan view taken from the axial direction of the first axis (03).
    [6]
    The jumper mechanism according to one of claims 1 to 5, wherein a jumper spring (36) is provided for applying the jump restriction member (55, 110, 121) against the wheel.
    [7]
    7. A movement (10) equipped with a jumper mechanism as claimed in one of claims 1 to 6.
    [8]
    8. Timepiece (1) equipped with a movement (10) as claimed in claim 7.
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    同族专利:
    公开号 | 公开日
    JP6661379B2|2020-03-11|
    CN106970514A|2017-07-21|
    JP2017125745A|2017-07-20|
    CH712030B1|2021-06-15|
    CN106970514B|2021-01-29|
    引用文献:
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    JPS5149971Y2|1971-02-17|1976-12-02|
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    CN201654479U|2010-04-13|2010-11-24|福建上润精密仪器有限公司|Cooperating structure for date calendar gear or week calendar gear of watch and positioning lever thereof|
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    JP5615733B2|2011-02-22|2014-10-29|セイコーインスツル株式会社|Big date display mechanism and timepiece having the mechanism|
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    JP6372815B2|2014-02-12|2018-08-15|セイコーインスツル株式会社|Display mechanism, watch movement and watch|
    CN204807931U|2015-06-19|2015-11-25|林英|Wrist -watch zhou li, calendar point gear|DE102019120272B3|2019-07-26|2020-06-18|Lange Uhren Gmbh|Watch with a first display and a second display|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2016004673A|JP6661379B2|2016-01-13|2016-01-13|Jumper mechanism, movement and clock|
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