JPH11258361A - Structure of clock with rotary display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To thin a clock and at the same time obtain the clock with improved cosmetic design by providing a shading plate at a gap that is retained by a dial and a minute circular plate flatly and at the same time providing the dial and the minute circular plate on nearly the same section. SOLUTION: A shading plate 17 is provided between a dial 8 and a minute plate 9 and between an hour plate 10 and a drive wheel train, thus shading those related to clock movement and obtaining a clock having one of a variety of designs exploiting the color tone of the shading plate 17. The hours circular plate 10 where hour numbers from 1 to 12 are printed is arranged at the same height as that of an hour circular plate drive wheel train for reading time from a dial opening 8a, and the minute plate 9 is arranged at nearly the same sectional height as that of the dial plate 8, thus thinning the clock and hence obtaining a fashionable clock by exploiting the tone color of the screening plate 17, transferring the rotation of an intermediate wheel 14 secured to a center wheel 13 to an intermittent wheel 15, rotating the hour circular plate 10 of the rotary display panel by rotating an electronic clock hand shaft that differs from a normal mounting position electronic clock hand shaft, and hence thinning the clock.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a time display of a timepiece, and more particularly to a structure of a timepiece with a rotation display plate for displaying time on the rotation display plate.

[0002]

2. Description of the Related Art Conventionally, an hour hand, a minute hand,
Timepieces with a rotating display plate in which respective rotating plates of an hour plate, a minute plate, and a second plate are attached to respective pointer shafts instead of the respective hands such as the second hand are well known. Such a timepiece with a rotating display plate is mainly used for a timepiece aiming for fashionability from the novelty of movement, unlike a time display timepiece based on a conventional hand, and various products are produced.

FIG. 4 is a completed external view of a conventional timepiece with a rotating display plate, and FIG. 5 is a sectional view of a main part thereof. The conventional timepiece with a rotating display plate is configured such that, instead of the hour hand, minute hand and second hand hands for time, respective rotating display plates of hour plate 1, minute plate 2 and second plate 3 are used.
It is attached to each of the pointer shafts of the second pinion 4, the center wheel 5, and the hour wheel 6.

The dial 7 has a part of the hour plate 1 for displaying time, a part of the minute plate 2 for displaying minutes, and a second plate 3 for displaying seconds. Opening 7 to make
a is provided. As shown in FIG. 4, the hour plate 1 has graduations for hour display such as 1, 2, 3,..., 12:00, and the hour plate 1 has minute scales such as 10, 20, 30,. A scale is printed, and an arrow is printed on the second plate 3.

The display times printed on the hour plate 1, the minute plate 2 and the second plate 3 are transmitted to the second pinion 4, the center wheel 5 and the hour wheel 6 by transmission of a wheel train from a motor (not shown). The display panel is rotated.

[0006]

By the way, each of the above-mentioned rotary display plates is attached to each of the pointer shafts in the same manner as the rotation of the hour hand, minute hand and the like indicated by the conventional hands, and is transmitted by an ordinary wheel train. The drive display is rotated, and the mounting position of each rotary display plate is the same as the conventional pointer position. Therefore, since the thickness of the timepiece is not different from the thickness of the conventional pointer display timepiece, the timepiece has a disadvantage that it is difficult to reduce the thickness.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to change the mounting position of the center of rotation between the time display plate of the rotary display plate and the rotary display plate of the minute plate and the second plate. As a result, the timepiece can be made thinner, and the division plate and the dial are arranged in substantially the same cross-section, and a shielding plate that covers the gap between the division plate and the dial is provided, so that the watch has a rich design. The purpose is to provide.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a timepiece having a minute disk, a second disk and a dial, wherein the dial and the minute disk are spaced apart in a plane. A shield plate is provided in a gap, and a dial and a dividing disk are provided on substantially the same cross section.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIGS. 1 and 2 show an embodiment of the present invention. FIG.
FIG. 2 is a sectional view of a main part of the timepiece movement of FIG. 1. FIG.
FIG. 2 is a plan view of FIG. 1 with the dial and each disk removed.

The timepiece shown in FIG. 1 has an hour disk 10 on which hour numbers 1 to 12 are printed, a minute plate 9 on which arrows indicating minutes and seconds are printed, and a second plate 11 on which arrows are similarly printed. But the dial 8
It is arranged below. The dial 8 is provided with an opening 8a through which a part of the hour disk 10 can be seen, and an opening 8b through which the minute plate 9 and the second plate 11 can be seen.

Hereinafter, the movement will be described in detail with reference to FIGS. The second plate 11 is attached to the second pinion 12 and the center plate 9 is attached to the center wheel 13 as usual. On the other hand, in the hour display structure, a donut-shaped hour disk 10 is arranged on the outer peripheral side of the timepiece instead of the hour wheel 6 and the hour plate 1 for hour display.

Then, as shown in FIG.
The wheel train configuration for driving the center wheel 13
, A gear wheel 15a and a feed pawl tooth portion 15b (1-3 to 3-3) engaged with the intermediate wheel 14
Intermittent feed wheel 15 having teeth), and a tooth disc 16 comprising a tooth portion 16a engaging with the feed pawl tooth portion 15b of the intermittent feed wheel 15 and a tooth portion 16b engaging with the tooth portion 10a of the hour disc 10. It is formed of an intermittent wheel 16 for intermittently rotating 10 and an hour disc 10 for intermittently rotating on the intermittent wheel 16 to indicate the hour.

In the present invention, a shield plate 17 is provided between the dial 8 and the center plate 9 and between the hour disk 10 and the drive train so that the watch movement-related parts are not visible. The color tones have the effect of providing watches with a variety of designs. Needless to say, this shielding plate 17 avoids the dial opening 8a. In the present embodiment, the tooth portion 16a and the tooth portion 16 of the intermittent wheel 16 are used.
b has the same number of six teeth each, and each is formed in a state shifted by 30 °.

In the above configuration, the hour disk 10 on which hour numbers 1 to 12 are printed is arranged at the same height as the hour disk drive train, and the time is read from the dial opening 8a.
Since the dividing plate 9 could be arranged at substantially the same cross-sectional height as the dial 8, the watch could be made thinner.

Next, the operation will be described. The rotation of the second pinion 12 and the center wheel 13 by decelerating rotation from a motor (not shown) is the same as in the related art, and the description is omitted. The intermediate wheel 14 press-fitted and fixed to the center wheel 13 rotates clockwise at a speed of one rotation per hour. The gear portion 15a of the intermittent feed wheel 15 engaged with the intermediate member 14 is set to have the same number of teeth as the intermediate wheel 14, and rotates counterclockwise at a speed of one rotation per hour.

The intermittent feed wheel 15 has three feed claw teeth 15b coaxial with the gear 15a and a circumferential portion 15c following the same.
Is provided. This circumferential portion is in contact with two adjacent tooth tips of the tooth portion 16a of the intermittent wheel 16, and when the hour disk 10 is not fed, that is, the intermittent wheel 16 is fixed without rotating during normal rotation. And the positioning of the hour disk 10 is performed.

Next, when the intermittent feed wheel 15 rotates counterclockwise and the one tooth 15b1 of the feed pawl tooth portion 15b comes to a position where it meshes with the tooth portion 16a of the intermittent wheel 16, the intermittent wheel 16 rotates clockwise. Start. The feed claw tooth portion 15b is provided with three teeth, ie, a tooth portion 15b1, a tooth portion 15b2, and a tooth portion 15b3. When the meshing of the three teeth is completed, the disc 10 takes one hour (for example, 12:00 to 12:00). To the time) time has advanced.

When the teeth 16a of the intermittent wheel 16 are engaged with the feed teeth 15b1 and 15b2 of the intermittent wheel 15 and are fed one by one, two teeth 10a of the hour disk are also fed. Finally, the third tooth 15b3 of the feed claw tooth portion 15b has no fourth tooth, so that one or more teeth (about 1.5 teeth) are fed, and the feed claw tooth portion 15b feeds about 3.5 teeth. The intermittent feed wheel 15 further rotates and rises 15 of the circumferential portion 15c.
c1 meshes with the tooth portion 16a, and the meshing causes the tooth portion 16a of the intermittent wheel 16 to be fed by a total of four teeth.

The tooth portion 10a of the hour disk is the tooth portion 16 of the intermittent wheel.
In synchronization with the number of feed dogs of a, four teeth are also fed. In the present embodiment, since the tooth portion 10a has 48 teeth, the angle at which the four teeth of the hour disk 10 rotate is 4/48 × 360 ° =
The disc is rotated by 30 ° and intermittently rotated by one hour. Thereafter, the intermittent feed wheel 15 further rotates, and FIG.
The two teeth of the tooth portion 16a of the intermittent wheel contact the circumferential portion 15c of the intermittent feed wheel 15 as shown in FIG.

Here, in the present embodiment, the intermittent feeder 15
Although the feed pawl tooth portion 15b is composed of three teeth, an intermittent feed mechanism is possible even with one tooth. However, in the case of one tooth, the tooth portion 16a of the intermittent wheel is fed by two teeth, and
In order to perform intermittent rotation every time (ie, 30 °), the number of teeth of the tooth portion 10a is 2 × 360 ° / 30 ° = 24, and 2
Need to have 4 teeth.

When the number of teeth is changed from 48 to 24, the size (module) of the teeth is doubled, and accordingly, the tooth portions 16b and 16a of the intermittent wheel 16 are also doubled.
Further, the feed pawl tooth portion 15b of the intermittent feed wheel 15 is also doubled, the plane size is increased, and the entire timepiece is enlarged, and it is difficult to reduce the size and thickness, but it is possible depending on the specifications.

As described above, by using a plurality of teeth of the intermittent feed wheel, the number of teeth of the hour disk and the size of the teeth can be appropriately set, and a compact structure can be realized. You can do it. Further, by press-fitting and fixing the intermediate wheel to the center wheel, it is possible to directly transmit the rotation of the center wheel one revolution per hour to the intermittent wheel, and a disk intermittent feeding mechanism can be provided when the number of parts is small. By the way, in this embodiment, only the hour disk is intermittently driven. However, by using a similar configuration between the second pinion and the center wheel, it is also possible to intermittently drive the minute plate and the hour plate. .

[0023]

As described above, according to the present invention,
By placing a shielding plate between the hour disk and the dial, a part of the watch movement that can be seen from the gap between the center plate and the dial is hidden, and the color tone of the shielding plate makes the watch rich in fashion By transmitting the rotation of the intermediate wheel fixed to the center wheel to the intermittent wheel, and rotating the hour disk of the rotation display plate, a pointer shaft different from the normal mounting position pointer shaft, It is a thin watch.

[Brief description of the drawings]

FIG. 1 is a plan view of a completed external appearance of a timepiece with a rotating display plate according to the present invention.

FIG. 2 is a sectional view of a main part of the timepiece with a rotating display plate according to the present invention shown in FIG.

FIG. 3 is a plan view of a main part of the timepiece with a rotating display plate according to the present invention shown in FIG. 1;

FIG. 4 is a plan view showing a completed appearance of a conventional timepiece with a rotating display plate.

FIG. 5 is a sectional view of a main part of the conventional timepiece with a rotating display plate shown in FIG.

[Explanation of symbols]

 1 hour plate 2 minute plate 3 second plate 4 second kana 5 center wheel 6 hour wheel 7 dial 8 dial 9 minute plate 10 hour disk 11 second plate 12 second kana 13 center wheel 14 intermediate wheel 15 intermittent feeder 16 intermittent wheel 17 Shield plate

Claims (2)

[Claims] 1. A timepiece having a minute disk, a second disk, and a dial, wherein a shield plate is disposed in a gap which is maintained in a planar manner between the dial and the minute disk. The structure of a clock with a plate. 2. The structure of the timepiece with a rotary display board according to claim 1, wherein the dial and the dividing disc are arranged on substantially the same cross section.