JPH0447676Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a timepiece mechanical body with a sound generation function.

(Prior Art) Alarm clocks, time signal clocks, and the like are known as clocks with a sound generation function. As is well known, these clocks operate a sounding body to produce a sound when the set time arrives, and the time is generally set by turning an operating knob such as a guide adjustment knob or a hand setting knob. .

FIG. 3 is a longitudinal cross-sectional view illustrating a conventional watch mechanical body, in which numeral 1 indicates a top plate, 2 a middle plate, 3 a base plate, 4 a wheel train, and 5 an operation knob for setting the time. As shown in the figure, in the conventional sound generator, a sounding body 6 is provided separately from the operation knob 5, a resonance box 7 in which a sound emitting hole 8 is formed is fitted in the upper part of the sounding body 6, and further, A sound emitting hole 9 to the outside of the timepiece machine body is formed in a portion of the upper plate 1 facing the sound emitting hole 8.

(Problems to be Solved by the Invention) Therefore, in the conventional watch mechanical body, the sounding body 6 is provided at a location different from the operating knob 5, so the space for arranging the sounding body 6 is It was necessary to secure a space separate from the space for storing other built-in parts, which was an obstacle in reducing the size of the watch machine. In addition, it is necessary to prepare a resonance box 7 in addition to the sounding body 6, and a sound emission hole 8,
It was necessary to form 9 each, which required a lot of work to manufacture.

(Means for solving the problem) This invention was made in view of the above circumstances.
In a watch equipped with an operating knob for time setting and a sounding device, the operating knob is formed in a hollow shape, and a sounding body is provided inside the operating knob,
This provides a watch mechanical body in which the operating knob also functions as a resonance box.

Note that the operation knob may be either a guideline correction knob or a needle setting knob.

(Function) Therefore, in the present invention, the sound emitted from the sounding body is resonated and amplified within the operation knob that serves as a resonance chamber, and since this operation knob also serves as a resonance box, the resonance that was conventionally installed separately is amplified. The box itself is no longer needed.

(Example) Hereinafter, the present invention will be described in detail based on FIGS. 1 and 2.

FIG. 1 is an enlarged vertical sectional view of a timepiece mechanism showing an embodiment of the present invention, and FIG. 2 is a rear view of the timepiece mechanism. Note that in these figures, the same symbols as those used in FIG. 3 indicate the same or applicable items.

In the figure, the clock of the present invention is a well-known analogue electronic clock that receives a drive signal from a time reference source such as a crystal, drives a motor, and appropriately decelerates its rotation through a clock wheel train 4 to display the time. It is based on a clock, and to briefly describe it, the driving force of the rotor 40 of the illustrated motor is transmitted to a fifth wheel 41, a second wheel 42, a third wheel 43, and a minute wheel 44.
Minutes are indicated by a minute hand (not shown) fixed to the tip of the dial. Furthermore, the rotation of the minute wheel 44 is transmitted to the hour wheel 46 via the hour wheel 45, and the hour hand (not shown) fixed to the tip of the hour wheel 46 displays the hour.

Reference numeral 11 is an operating knob, and its pinion 111 is engaged with the Hi-no-ura wheel 45. Furthermore, in the present invention, a sounding body 12 is built into the operating knob 11 to constitute a sounding device.

Specifically, the operating knob 11 is enlarged in diameter and a hollow portion 20 is provided inside the operating knob 11, and the hollow portion 20 is
The remaining hollow part 20 with the sounding body 12 arranged in the lower part of the
is used as a resonance chamber 13, and furthermore, a sound emitting hole 14 is formed on the upper surface of the operating knob 11. 15 indicates a protruding edge of the base plate 3, and the lower edge of the operation knob 11 is
It is configured to be able to rotate independently while slidingly contacting the edge 15.

Therefore, the operating knob 11 is rotated regardless of the existence of the sounding body 12, and the needles are aligned.
3, it is enlarged and exits from the sound emitting hole 14.

In the embodiment, the operating knob 11 is used as a needle setting knob, but as shown in FIG. 2, in addition to this needle setting knob 11, it may also be used as a guideline correction knob 11a.

(Effects of the invention) As explained above, the present invention improves a clock equipped with an operating knob for time setting and a sound generator, forms a hollow part in the operating knob to serve as a resonance chamber, and A sounding body is provided inside the unit, and the operating knob also serves as a resonance box, eliminating the need for a resonance box when assembling the watch mechanical body, reducing two parts to one without requiring a separate location for the sounding device. Therefore, it becomes possible to make the watch itself smaller and cheaper. In addition, since the operating knob is equipped with a sound generator with a sound emitting hole, there is no need to separately provide a new sound emitting hole on the exterior, making it possible to plan for labor saving in the manufacturing process. It is possible to realize cost reduction.

[Brief explanation of the drawing]

Fig. 1 is an enlarged vertical cross-sectional view of a watch mechanism showing an embodiment of the present invention, Fig. 2 is a rear view of the watch mechanism, and Fig. 3 is a part of the area around the operating knob of the watch mechanism showing a conventional example. FIG. 11...Operation knob, 12...Sounding body, 13...
...Resonance chamber, 14...Sound emission hole, 20...Hollow part.

Claims (1)

[Scope of utility model registration request] In a watch equipped with an operating knob for time setting and a sounding device, a hollow part is formed in the operating knob to serve as a resonance chamber, and a sounding body is provided inside the hollow part, so that the operating knob also functions as a resonance box. A watch mechanical body characterized by: