JPH0254913B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a decorative timepiece in which only the hands appear to move without a transmission mechanism.

[Prior Art] Various decorative clocks are used as table clocks or mainly wall clocks, and are widely used not only to simply indicate the time but also as a type of interior decoration. There are various types of decorative clocks of this kind, but decorative clocks of the type that enhance the visual beauty and give a sense of wonder to the viewer have been proposed in the past, such as the hour hand that is the time support part, Clocks that make it appear as if the minute hand is moving independently without any moving parts have become very popular due to their visual sense of mystery.

The conventional decorative clock is constructed as shown in FIGS. 1 and 2. That is, an hour hand 11 is printed on the surface of the transparent display plate 9, a minute hand 15 is printed on the other display plate 13, and gear parts 9a,
13a is formed. And display boards 9, 13
are housed in transparent cases 17 and 19 in which the gear parts 9a and 13a are not visible from the outside,
The display plates 9 and 13 are each rotated by a transmission gear train 21 built into a pedestal 23 at the bottom of the watch.

However, in conventional decorative watches, the structure for preventing the gear parts 9a and 13a formed on each display plate 9 and 13 from being seen from the outside is complicated, and the pedestal 23 for hiding the transmission gear train is required. The drawback was that the clock was thick due to this necessity, making it difficult to design it as a wall clock.

Also, since there is a pedestal, there is a minute hand inside it.
Because it was easily imagined to have a transmission mechanism that moved a clock, it lacked the novelty of an interior clock because it did not give the impression that only the hands were moving, which is expected of this type of clock. .

[Object of the Invention] The present invention has been made in view of the above-mentioned drawbacks of the conventional art.The purpose of the present invention is to provide a novel decorative clock that is thin and suitable for wall clocks, and realistically gives the mysterious feeling of only the hands moving. It is about providing.

[Structure of the Invention] In order to achieve this object, the present invention includes a front plate and a rear plate, at least one of which is formed of a transparent member, and a minute hand gear that is fixed to the front plate and the rear plate and rotatably supports a minute hand gear. a minute hand shaft, a date mounting plate coupled to the minute hand shaft, a train gear meshing with the minute hand gear, and a drive unit that rotationally drives the train gear, and is rotatable on the minute hand shaft. a movement case that is pivotally supported on the movement case, a minute hand pinion that is integrally fixed to the movement case, a date back gear that is pivotally supported on the date back mounting plate and meshes with the minute hand pinion, and the date back mounting plate. The hour hand wheel includes a date back pinion supported coaxially with the date back gear on a plate, and an hour hand wheel that is pivotally supported on the minute hand shaft and meshes with the date back pinion, and has an hour hand. Features.

[Embodiments of the Invention] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

3 and 4, a minute hand shaft 14 is fixed between a transparent front plate 10 and a rear plate 12 through which the hour and minute hands of the clock can be seen from the outside, and a minute hand gear 16 is integrally formed on the minute hand shaft 14. has been done. A thin disc-shaped movement case 18 is rotatably supported on the minute hand shaft 14, and the minute hand gear 16 is inserted into the movement case 18. And inside this movement case 18 is the third wheel 2.
A train gear 2 consisting of 0, 4th wheel 22, and 5th wheel 24
6 are internally installed, and the third wheel 20 is the minute hand gear 1.
6, each gear shaft 20 of the train gear 26
a, 22a, and 24a are each pivotally supported by the movement case 18. On the other hand, a gear 28a fixed to a rotor 28 meshes with the fifth wheel 24 located outside the train gear 26. A stator 30 is fixed to the inner surface of the movement case 18, and the stator 30 is driven by the rotor 28. The motor 32
is configured.

Also, a train gear 26, a motor 32, and a motor 32 housed inside the movement case 18
The batteries 36 for driving the movement are arranged in a well-balanced manner around the minute hand shaft 14, and as a result, the movement case 18 can be rotated around the minute hand shaft 14 with a small driving force.

A minute hand 3 is provided on the outer surface of the movement case 18.
4 is fixed, and when the motor 32 is driven by the battery 36, the minute hand 34 rotates together with the movement case 18.

In addition, the movement case 18 has a minute hand (kana) 3.
8 are fixed together, and the movement case 18
A Hino back mounting plate 40 is fixed to the portion of the minute hand shaft 14 that protrudes from the Hino back mounting plate 40, and a Hino back stem 42 is fitted into the Hino back mounting plate 40. A day back gear 44 that meshes with the minute hand pinion 38 is attached to one side of the day back stem 42, and a day back pinion 46 is attached to the other side of the day back stem 42. An hour hand wheel 48 that meshes with the hour hand wheel 46 is fitted onto the minute hand shaft 14, and an hour hand 50 is attached to the hour hand wheel 48.

As a result, the rotation of the movement case 18 is transmitted to the timepiece 50 via the minute hand pinion 38, the date back gear 44, the date back pinion 46, and the hour hand wheel 48.

As described above, by arranging the train gear 26 and the motor 32 in the movement case 18 and configuring the movement case 18 to rotate together with the minute hand 34 around the minute hand shaft 14, it is possible to intentionally house the movement case. There is no need for a pedestal for the movement, and the entire watch can be made thin, making it easy to design as a wall clock.In addition, the minute hand 34 rotates together with the movement case 18, making it appear as if the minute hand were used without a driving part. The only thing that appears to be moving.

In this embodiment, a small battery is built into the movement case 18, but a solar cell may be attached to the outer surface of the movement case 18.

Further, in this embodiment, the minute hand 34 is configured to rotate integrally with the movement case 18, but the present invention is not limited to this, and the hour hand is rotated with the movement case by changing the train gear in the case with the rotation center axis of the movement case as the hour hand axis. It may be configured to rotate integrally, and even with such a configuration, the same effects as in this embodiment can be achieved.

[Effects of the Invention] As explained above, according to the present invention, it is possible to provide a decorative timepiece that is thin and suitable for use as a wall clock, and that realistically gives a sense of mystery as if only the minute hand or hour hand is moving without a driving part.

[Brief explanation of drawings]

1 and 2 are explanatory diagrams showing a conventional decorative clock, FIG. 3 is an explanatory diagram showing an embodiment of the decorative clock of the present invention, and FIG. 4 is an enlarged view of the main part of FIG. 3. 10... Front plate, 12... Rear plate, 14... Minute hand shaft, 16... Minute hand gear, 18... Movement case, 26... Gear train gear, 36... Motor, 34
...Minute hand, 50...Hour hand.

Claims (1)

[Scope of Claims] 1. A front plate and a rear plate, at least one of which is formed of a transparent member; a minute hand shaft that is fixed to the front plate and the rear plate and rotatably supports a minute hand gear; and on the minute hand shaft. a movement case that accommodates a train gear that meshes with the minute hand gear and a drive unit that rotationally drives the train gear, and is rotatably supported on the minute hand shaft; a minute hand pinion integrally fixed to the movement case; a date back gear pivotally supported on the date back mounting plate and meshing with the minute hand pinion; and a date back gear mounted on the date back mounting plate. 1. A decorative timepiece comprising: a coaxially-supported date pinna; and an hour hand wheel that is pivotally supported on the minute hand shaft, meshes with the date pinna, and has an hour hand.