JPH0731187Y2 - Click mechanism of standard device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a click mechanism of a reference device.

[0002]

2. Description of the Related Art FIG. 3 is a longitudinal sectional view of a conventional guide device, and FIG.
FIG. 6 is a plan view of a conventional click mechanism. In the figure,
In the conventional guide device, a protruding shaft 2 is formed on the lower plate 1 so as to project toward the upper plate 3 side, and a reference matching wheel 4 is rotatably fitted to the protruding shaft 2 and the reference matching wheel 4 is transmitted as a reference. A structure in which the index wheel 5 is meshed with the wheel 5, the index wheel 5 is further meshed with the index wheel 6, and the index sword 7 fixed to the index wheel 6 is rotated on the surface of the dial 8 by the rotation of the index wheel 4. Yes. In addition, the guide wheel 5 above, the leg 1 of the guide cam 10 at the set time
A hole 9 into which 0a drops is formed. That is, the reference set wheel 11 is engaged with the hour hand wheel 12, and the reference set wheel 11 restrains the reference cam 10 so that the reference cam 10 can be rotated together, and the reference cam 10 has a contact (not shown). When the hour wheel 12 is rotated by the set time, the leg portion 10a of the reference cam 10 falls into the hole 9 and the age spring 13 is moved to the lower plate 1. The alarm switch (not shown) is turned on to turn on. Reference numeral 14 is an external tooth of the reference transmission wheel 5 that meshes with the reference setting wheel 4. Reference numeral 15 is a click spring integrally formed with the lower plate 1, and the click spring 15 is conventionally engaged with a knurled portion 16 formed on the lower plate 1 side of the external teeth 14 (see FIG. 4). ). That is, both the outer teeth 14 and the knurled portion 16 are provided with steps formed on the outer circumference of the reference transmission wheel 5.

[0003]

In the above conventional click mechanism, the knurled portion 16 is provided on the outer circumference of the reference transmission wheel 5,
The pair of click springs 15 must be symmetrically arranged on the knurled portion 16 from the outside, and setting of other gears is largely restricted.

In recent years, it has been desired to make the clock thinner, but if a click mechanism is provided on the outer circumference of the guide wheel 5, the knurled portion 16 and the outer teeth 14 must be provided in two stages. It is difficult to reduce the thickness. On the other hand, when it is made thinner, in the meshing of the indicator set wheel 11 and the hour hand wheel 12 and the indicator transmission wheel 5 and the indicator wheel 6, the inclination of the gear due to the clearance between the support column and each gear, and the axial clearance will occur. Occurs, and disengagement easily occurs.

Under the above circumstances, the present invention has been made for the purpose of providing a click mechanism of a reference device which can be made thin and at the same time solve the problems caused by the thinning.

[0006]

[Means for Solving the Problems] That is, the present invention provides a guide transmission wheel that is engaged with a reference alignment wheel and transmits the amount of rotation to the reference vehicle, and a reference set vehicle that is rotated when engaged with an hour hand wheel. A click mechanism of a reference device provided between the reference transmission wheel and an age spring, the reference cam being rotated together with the reference set vehicle, the mechanism being inside the reference transmission vehicle and inside the reference transmission vehicle. A knurled part is formed at the same height as the external teeth, a click spring integrally formed on the lower plate is engaged with the knurled part, and the index transmission wheel is pressed with a force greater than that of the age spring at the top of the click spring. It was done.

[0007]

In the above invention, since the outer teeth and the knurled portion have the same height, the reference transmission wheel can be made thin.
Also, since the click spring is located inside the car,
There is a margin in the setting space of other gears. Furthermore, since the indicator transmission wheel is pressed by the click spring, the indicator set wheel is pressed against the upper plate via the indicator transmission wheel, and the meshing state of each gear is stabilized.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to FIGS. Since the configuration other than the click mechanism is the same as the configuration in FIGS. 3 and 4, the same reference numerals as those in the above-mentioned conventional example are given and the description thereof is omitted.

The knurled portion 21 of the present invention is a guide wheel 5
Is provided at the same height as the outer teeth 14 inside. Therefore, the conventional one has two knurled parts 16 and external teeth.
Since the present invention requires only one step, while it is formed in steps,
The guide wheel 5 itself can be made thin. Also, the click spring 22 formed integrally with the lower plate 1 is
It is arranged inside the reference transmission wheel 5 in correspondence with 1.
Further, the click spring 22 is largely projected to the upper plate side, and the index transmission wheel 5 is pressed to the upper plate 3 side by the head of the click spring 22. In this way, the meaning of pressing the guide wheel 5 is
The guide set wheel 11 is pressed against the upper plate 3 via the guide transmission wheel 5 to prevent inclination due to clearance with the support column, and further to eliminate axial again to stabilize gear meshing. Therefore, the pressing force is
It is said to be larger than the biasing force of Agebane.

In the click mechanism of the present invention, the index transmission wheel 5 is rotated as the index adjustment wheel 4 rotates, and when the knurl portion 21 formed inside the index transmission wheel 5 rotates, the knurl portion. The click spring 22 engaged with 21 is elastically deformed to give a click feeling. Further, the reference set wheel 11, which is rotated as the hour wheel 12 rotates, has its top portion pressed against the upper plate 3 by the click spring 22 and thus performs stable (blurring) rotation.

[0011]

[Effect of the Invention] As described above, according to the present invention, it is possible to make the guide transmission vehicle as thin as possible.
Even if it is made thinner, the guide set wheel is pressed against the upper plate by the click spring, so the gears will not disengage. In addition, since the click spring is located inside the reference wheel, there is an advantage that a space for installing other gears can be provided.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a reference device showing an embodiment of the present invention.

FIG. 2 is a plan view of the click mechanism of the present invention.

FIG. 3 is a vertical cross-sectional view of a reference device showing a conventional example.

FIG. 4 is a plan view of a conventional click mechanism.

[Explanation of symbols]

 1 Lower plate 3 Upper plate 4 Standard matching vehicle 5 Standard transmission vehicle 6 Standard vehicle 10 Standard cam 11 Standard set vehicle 12 Hour hand wheel 13 Age spring 14 External teeth 21 Knurled part 22 Click spring

Claims (1)

[Scope of utility model registration request] 1. A guide transmission wheel that is engaged with the reference engagement wheel and transmits the rotation amount to the reference vehicle, a reference set vehicle that is rotated by engagement with an hour hand wheel, and between the reference transmission wheel and an age spring. A click mechanism of a reference device having a reference cam which is arranged at the same time and is rotated together with the reference set vehicle, wherein the knurled portion is inside the reference transmission wheel and at the same height as the external teeth of the reference transmission wheel. And a click spring integrally formed on the lower plate is engaged with the knurled portion, and the reference transmission wheel is pressed with a force larger than that of the age spring at the top of the click spring. mechanism.