JP4851862B2 - Clock structure - Google Patents

Description

The present invention relates to a vehicle fitted to a pointer shaft having a feed dog for driving a display member for displaying date and time.

  In order to drive a display member for displaying date and time, a structure in which a convex feed dog is formed on a flat plate portion of a car fitted to a pointer shaft is used. The car fitted to the pointer shaft has a role of displaying a time by fitting a hand. A vehicle fitted to such a pointer shaft is tilted within the range of the backlash of the shaft by a load that drives another vehicle. In a thin watch structure in recent years, it is difficult to secure a sufficient length of the shaft for regulating the inclination of the car, the inclination of the car becomes large, and the swing of the needle fitted to the car tends to increase, As a result, the quality of the watch decreases.

  Therefore, conventionally, as shown in FIG. 2 of Patent Document 1, a structure that presses the vehicle in one direction with a member having a spring property called a needle seat is employed, but the conventional needle seat is thin and small. It was very difficult to assemble by automatic assembly. Or as shown in FIG. 4 of patent document 1, the part which has the spring property was integrally formed in the flat part of the vehicle, and the structure which presses a vehicle to one direction is taken. Such a configuration is effective as long as nothing is formed on the flat portion of the vehicle.

FIG. 8 and FIG. 9 show a calendar feeding mechanism in which a feed dog that drives the hour wheel to the hour wheel is formed. FIG. 8 is a plan view of the calendar feeding mechanism, and FIG. 9 is a main sectional view of the calendar feeding mechanism.
Reference numeral 1 denotes a member which is a base plate and serves as a watch substrate , and in this application, refers to a structure integrated with the central axis. Reference numeral 2 denotes a minute wheel, which has a gear portion 2a and a kana portion 2b. Reference numeral 13 denotes an hour wheel, which includes a flat plate portion 13a, a gear portion 13b formed on the flat plate portion 13a, a feed dog 13c formed in a convex shape on the flat plate portion 13a, and a shaft portion 13d on which an hour hand described later is fitted. Have. Reference numeral 4 denotes a date feeding wheel, which includes a tooth portion 4a that meshes with the feed dog 13c of the hour wheel 13 and a date feeding claw portion 4b that drives the date wheel described later. Reference numeral 5 denotes a date wheel, which is a member that displays a calendar such as a date. Reference numeral 7 denotes an hour hand, which is a member that is fitted to the shaft portion 13d of the hour wheel 13 and displays the time.

  The gear portion 2 a of the minute wheel 2 is driven by transmission of power from a rotor (not shown), and the hour wheel 2 b of the minute wheel 2 is engaged with the gear portion 13 b of the hour wheel 13 to drive the hour wheel 13. I am letting. The hour hand 7 is fitted in the shaft portion 13d of the hour wheel 13 and rotates in unison with the hour wheel 13 to indicate the hour. Further, the feed dog 13c of the hour wheel 13 meshes with the tooth portion 4a of the date feeding wheel 4 to drive the date feeding wheel 4, and the feed claw formed longer by one tooth in the tooth portion 4a of the date feeding wheel 4 Only the portion 4b meshes with the date indicator 5 to drive the date indicator 5 as a calendar display member. The date feeding wheel 4 is rotated once a day by decelerating the driving from the hour wheel 13 to 1/2, and the date indicator 5 which is a calendar display member is driven only once a day. Switching is in progress. In addition, the hour wheel 13, the date feeding wheel 4, and the date wheel 5 are each regulated to be loose in the height direction by the date wheel presser 6.

Japanese Utility Model Publication No. 55-94585 (Figs. 2, 4, 2-4)

As described above, in the conventional needle seat can not automated assembly for poor handling property, there is a problem in that time the assembly is applied even in the manual. Moreover, if nothing is formed on the flat plate portion of the car such as the above-described hour wheel, the configuration as shown in FIG. 4 of Patent Document 1 can be taken. When trying to devise, it becomes a big obstacle. Therefore, when the convex feed dog is formed on the flat plate portion of the vehicle as described above, the area cannot be secured in the flat plate portion, and there is a disadvantage that a spring-like shape cannot be added. .

  Further, in the case of the structure as shown in FIGS. 8 and 9, in the timepiece having the needle seat structure, the inclination of the hour wheel is regulated by an axis passing through the hour wheel. In the structure, the length of the shaft that regulates the inclination of the hour wheel cannot be taken sufficiently, the inclination of the hour wheel becomes larger, and the needle shake of the hour hand fitted to the hour wheel becomes larger.

SUMMARY OF THE INVENTION An object of the present invention is to reduce the vibration of a needle fitted to a wheel that is fitted to a wheel while being easy to assemble in a timepiece structure that displays a date or the like.

In order to achieve the above object, a timepiece structure according to claim 1 of the present invention includes a shaft portion fitted to a pointer shaft, a flat plate portion perpendicular to the shaft portion, and a gear portion around the flat plate portion. And a timepiece structure including a display member for displaying date and time, and a transmission wheel for transmitting the rotation of the vehicle to the display member, the feed dog for transmitting the drive to the transmission wheel. the flat plate portion of the car so as to form at convex shape, characterized by being formed integrally with the spring member for pressing the wheel in the axial direction of the shaft portion on the upper surface of the feed dog.

The timepiece structure according to claim 2 of the present invention includes a wheel having a shaft portion fitted to the pointer shaft, a flat plate portion perpendicular to the shaft portion, and a gear portion around the flat plate portion, a date and time, etc. In a timepiece structure comprising a display member for performing display and a transmission wheel for transmitting rotation of the vehicle to the display member, a feed dog for transmitting driving to the transmission vehicle has a tip portion of the flat plate of the vehicle And a spring member that integrally presses the wheel in the axial direction of the shaft portion is formed integrally with the flat plate portion between the feed dog and the shaft portion. .

Watch structure of claim 3 of the present invention, in the configuration of claim 1 or 2, wherein the spring portion
The material is formed at the same angle in at least three places .

A timepiece structure according to a fourth aspect of the present invention is characterized in that, in the configuration of the first or second aspect , the wheel is an hour wheel in which an hour hand is fitted to the shaft portion.

  The timepiece structure according to claim 5 of the present invention is the timepiece structure according to claim 1, wherein the feed dog on the lower surface side of the spring member is formed with a concave shape that creates a space, and the lower surface of the spring member and the The upper surface of the feed dog is formed at the same height.

According to the timepiece structure of the present invention, it is provided with a vehicle fitted to the pointer shaft and a transmission wheel for transmitting the rotation of the vehicle to the display member, and the feed dog for transmitting the drive to the transmission wheel is a flat plate portion of the vehicle. By forming the spring in a convex shape and providing a spring portion that presses the vehicle in the axial direction, the vehicle can reduce the shake of the needle that fits into the vehicle while being a part shape that is easy to assemble. I can do it.

A timepiece structure comprising a date wheel that is a display member for displaying the date, a date feeding wheel for driving the date wheel, a shaft wheel for fitting the hour hand, and a hour wheel having a flat plate portion perpendicular to the shaft portion, A spring member that is formed in a convex shape on the flat plate portion of the hour wheel, and that presses the hour wheel in the direction of the main plate or the date indicator press, in the upper surface of the feed dog for driving the date wheel. Formed integrally with the car.

In all of the following embodiments, as an example of a car having a shaft portion that fits the pointer shaft, an hour wheel that fits an hour hand will be described as an example. First, Embodiment 1 of the present invention will be described with reference to the drawings.
FIG. 1 is a component diagram of an hour wheel, (a) is a top view of the hour wheel, (b) is an AA sectional view of FIG. (A), (c) is a BB sectional view of FIG. (D) is the perspective view which looked at a part of hour wheel from the upper surface. 2 is a plan view for explaining the outline of the calendar feeding mechanism, and FIG. 3 is a cross-sectional view for explaining the main part thereof. Since the drive mechanism from the minute wheel to the date wheel excluding the hour wheel is the same as in the conventional example, the same reference numerals are used and detailed description thereof is omitted.

  In FIG. 1, reference numeral 3 denotes an hour wheel, a shaft portion 3d into which an hour hand is fitted, a flat plate portion 3a perpendicular to the shaft portion 3d, a gear portion 3b formed on the flat plate portion 3a, and a convex portion on the flat plate portion 3a. And a feed dog 3c formed in a shape. A spring portion 3e is formed on the upper surface 3f of the feed dog 3c, and a hemispherical convex spring sliding portion 3j is formed at the tip of the spring portion 3e.

  A concave shape 3k that creates a space is formed on the lower surface of the feed dog 3c forming the spring portion 3e, and the spring portion 3e is made elastic by reducing the thickness of the spring portion 3e. Further, by making the lower surface 3g of the spring portion 3e and the upper surface 3f of the feed dog 3c the same height, the lower mold for forming the concave shape 3k on the lower surface, and the spring portion 3e and the feed dog 3c are formed. The mold is made to hit at this height. As a result, it is not necessary to reduce the thickness of the mold of the portion for molding the slit 3h for separating the spring portion 3e from the feed dog 3c, and the width of the slit 3h can be reduced. Thus, it is possible to form the spring portion 3e that can sufficiently ensure the spring property in the limited space in the upper surface 3f of the feed dog 3c. Thus, since the spring part 3e which has spring property was able to be integrally formed in the hour wheel 3, the hour wheel 3 can be assembled easily.

2 and 3, the spring sliding portion 3j formed at the tip of the spring portion 3e formed in the hour wheel 3 has a height setting that slightly interferes with the date indicator holder 6 that is a pressing member of the hour wheel 3. The portion 3e is structured to be driven in a state where it is bent somewhat downward. The hour wheel 3 is driven in a state in which the spring portion 3e is bent by the date dial holder 6 and is always pressed downward. As a result, the hour wheel 3 is always pressed toward the main plate 1 as a watch substrate, and the shaft portion 3d of the hour wheel 3 always keeps vertical with respect to the main plate 1 to display the date feeding wheel 4 and date as a transmission wheel. Therefore, it is possible to prevent the hour wheel 3 from being tilted by a driving load of the date wheel 5 as a display member for the purpose, and to reduce the shake of the hour hand 7 fitted to the shaft portion 3d of the hour wheel 3.

Further, the spring portion 3e is arranged on the lower surface side of the flat plate portion 3a of the hour wheel 3, the spring sliding portion 3j is formed in a convex shape toward the lower surface of the tip, and the spring portion 3e is bent upward by the base plate 1, A similar effect can be obtained by a structure in which the hour wheel 3 is pressed in the direction of the date dial holder 6.

Next, a second embodiment of the present invention will be described with reference to the drawings. 4A and 4B are part drawings of the hour wheel, in which FIG. 4A is a top view of the hour wheel, FIG. 4B is a cross-sectional view taken along the line CC in FIG. FIG. 5 is a plan view for explaining the outline of the calendar feeding mechanism, and FIG. 6 is a cross-sectional view for explaining the main part thereof. Since the drive mechanism from the minute wheel to the date wheel excluding the hour wheel is the same as in the conventional example, the same reference numerals are used and detailed description thereof is omitted.

  In FIG. 4, 8 is an hour wheel, a shaft portion 8d into which an hour hand is fitted, a flat plate portion 8a perpendicular to the shaft portion 8d, a gear portion 8b formed on the flat plate portion 8a, and a convex portion on the flat plate portion 8a. And a feed dog 8c formed in a shape. The feed dog 8c is designed so that the portion necessary for driving the date feeding wheel 4 is only the tip of the feed dog, and is formed in a convex shape on the flat plate portion 8a. As a result, a flat portion is secured on the flat plate portion 8a between the feed dog 8c and the shaft portion 8d, so that the spring portion 8e can be formed. A spring sliding portion 8j is formed in a hemispherical shape on the lower surface of the tip of the spring portion 8e. Thus, since the spring part 8e which has spring property was able to be integrally formed in the hour wheel 8, the hour wheel 8 can be assembled easily.

  5 and 6, the spring sliding portion 8j formed at the tip of the spring portion 8e formed in the hour wheel 8 slightly interferes with the main plate 1 when the hour wheel 8 is pressed by the date indicator holder 6 which is a pressing member. The spring portion 8e is bent upward. The hour wheel 8 is driven in a state in which the hour wheel 8e is always pressed upward by the bending of the spring portion 8e. As a result, the hour wheel 8 is always pressed to the date indicator holder 6 side which is a pressing member, and the shaft portion 8d of the hour wheel 8 always keeps vertical with respect to the date indicator holder 6, and the date feeding wheel 4, the date indicator 5, etc. It is possible to prevent the hour wheel 8 from being inclined due to the driving load, and to reduce the shake of the hour hand 7 fitted to the shaft portion 8d of the hour wheel 8.

Further, the spring portion 8e is arranged on the upper surface side of the flat plate portion 8a of the hour wheel 8, the spring sliding portion 8j is formed in a convex shape toward the upper surface of the tip, and the spring portion 8e is moved downward by the date wheel presser 6. The same effect can be obtained by a structure in which the hour wheel 8 is bent and pressed against the main plate 1 side.

  Next, Embodiment 3 of the present invention will be described with reference to the drawings. FIG. 7 is a plan view for explaining the outline of the 24-hour indicator hand feeding mechanism.

  In FIG. 7, 9 is a cylindrical wheel, which is formed in a shaft 9d perpendicular to the flat plate portion, a feed dog 9c formed in a convex shape for driving the sub-needle intermediate wheel 10, and an upper surface of the feed dog 9c. Spring portion 9e. Reference numeral 10 denotes a sub-needle intermediate wheel, which has a gear portion 10 a that meshes with the feed dog 9 c of the hour wheel 9 and the gear 11 a of the sub-needle wheel 11. Reference numeral 11 denotes a sub-needle wheel, which has a gear portion 11a that meshes with the gear 10a of the sub-needle intermediate wheel 10 and a shaft 11b on which a 24-hour indicator hand described later is fitted. Reference numeral 12 denotes a 24-hour display hand, which is engaged with the shaft portion 11b of the sub-hand wheel 11 and rotates integrally to perform 24-hour display.

The feed dog 9c of the hour wheel 9 meshes with the gear portion 10a of the sub-needle intermediate wheel 10 which is a transmission wheel to drive the sub-needle intermediate wheel 10, and the gear portion 10a of the sub-needle intermediate wheel 10 is the gear portion of the sub-needle wheel 11. The sub-needle wheel 11 is driven by meshing with 11a. At this time, the auxiliary hand wheel 11 as a display member is rotated once every 24 hours by decelerating the driving from the hour wheel 9 to 1/2, and the 24-hour display hand 12 is attached to the shaft 11b of the auxiliary wheel 11. 24 hours display is performed by fitting.

Here, the spring portion 9e formed on the hour wheel 9 is configured to be driven in a state of being bent downward by a date indicator holder 6 which is a pressing member of the hour wheel 9. As a result, the hour wheel 9 is always pressed to the main plate 1 side which is a clock base, and the shaft portion 9d of the hour wheel 9 always keeps vertical with respect to the main plate 1 so that the hour wheel 9 can be prevented from being inclined. The swing of the hour hand 7 fitted to the shaft portion 9d of the vehicle 9 can be reduced.

The same effect can be obtained by arranging the spring portion 9e on the lower surface side of the flat plate portion of the hour wheel 9 so that the spring portion 9e bends upward by the main plate 1 and presses the hour wheel 9 in the direction of the date indicator holder 6. can get.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an hour wheel parts diagram for explaining an hour wheel structure according to a first embodiment of the present invention. It is a timepiece plan view for explaining a calendar feed mechanism of Embodiment 1 of the present invention. FIG. 3 is a cross-sectional view of the timepiece illustrating the calendar feeding mechanism according to the first embodiment of the present invention. FIG. 6 is an hour wheel part diagram for explaining an hour wheel structure according to a second embodiment of the present invention. It is a timepiece plan view for explaining a calendar feed mechanism of Embodiment 2 of the present invention. It is timepiece sectional drawing explaining the calendar feed mechanism of Example 2 of this invention. It is a timepiece plan view for explaining a 24-hour hand feeding mechanism of Embodiment 3 of the present invention. It is a timepiece plan view for explaining a conventional calendar feed mechanism. It is a timepiece sectional view explaining a calendar feed mechanism of the conventional structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ground plane 2 Sun reverse wheel 2a Sun reverse wheel gear 2b Sun reverse wheel kana 3 Hour wheel 3a of Example 1 Flat plate part 3b of hour wheel of Example 1 Wheel gear 3c of Example wheel 1c Feed tooth 3d of the hour wheel 3e of the hour wheel of the example 1 Spring portion 3f of the hour wheel of the example 1 Upper surface 3g of the feed dog of the hour wheel of the example 1 Lower surface 3h of the spring part of the hour wheel of the example 1 Example 1 Slit portion 3j of the cylindrical wheel Spring sliding portion 3k of the cylindrical wheel of Example 1 Lower concave side shape 4 of the cylindrical wheel of Example 1 Date feed wheel 4a Date feed wheel 4b Date feed claw 5 Car 6 Date indicator 7 Hour hand 8 Hour wheel 8a of the second embodiment Flat plate portion 8b of the hour wheel of the second embodiment Gear wheel 8c of the second wheel of the second embodiment Feed tooth 8d of the second wheel of the second embodiment Hour wheel of the second embodiment Shaft 8e Spring portion 8j of the hour wheel of Example 2 Spring sliding portion 9 of the hour wheel of Example 2 hour wheel 9c of Example 3 hour wheel 9d of hour wheel of Example 3 hour wheel of Example 3 Shaft 9e Spring portion 10 of hour wheel of Example 3 Secondary needle intermediate wheel 10a of Example 3 Gear 11 of secondary needle intermediate wheel of Example 3 Secondary needle wheel 11a of Example 3 Gear 11b of auxiliary needle wheel of Example 3 The shaft 12 of the auxiliary needle wheel of Example 3 The 24-hour indicator hand of Example 3

Claims (5)

A wheel having a shaft portion fitted to the pointer shaft, a flat plate portion perpendicular to the shaft portion, and a gear portion around the flat plate portion, a display member for displaying date and time, and rotation of the car A timepiece structure including a transmission wheel for transmitting the information to the display member,
A feed dog for transmitting drive to the transmission wheel is formed in a convex shape on the flat plate portion of the vehicle, and a spring member that presses the wheel in the axial direction of the shaft portion is integrally formed on the upper surface of the feed dog. A watch structure characterized by being formed. A wheel having a shaft portion fitted to the pointer shaft, a flat plate portion perpendicular to the shaft portion, and a gear portion around the flat plate portion, a display member for displaying date and time, and rotation of the car A timepiece structure including a transmission wheel for transmitting the information to the display member,
The feed dog for transmitting drive to the transmission wheel has a tip formed in a convex shape on the flat plate portion of the vehicle, and the wheel is mounted on the flat plate portion between the feed dog and the shaft portion. A timepiece structure in which a spring member that is pressed in the axial direction of the portion is integrally formed. Watch structure according to claim 1 or 2, wherein the spring member is characterized by being formed with the same angle in at least three places. The timepiece structure according to claim 1 or 2 , wherein the wheel is an hour wheel in which an hour hand is fitted to the shaft portion. Claim wherein the said feed dog of the lower surface side of the spring member is formed with a concave shape to make a space, the lower surface and the upper surface of the feed teeth of the spring member, characterized in that it is formed at the same height The timepiece structure according to 1 .

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