JPH0116063Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a push button device.

There have been various pushbutton devices in the past, but all of them require a return spring for the pushbutton, mounting screws, etc., have many parts, and are time-consuming to install.

This invention provides a push button device that has a small number of parts, is easy to assemble, and has good workability.

An embodiment of this invention will be described with reference to the drawings. A small battery cover 3 covering a battery storage chamber 2 is provided on the back side of a frame 1 of a watch or the like. A mounting portion 4 extending slightly from the frame toward the battery storage chamber 2 is provided inside the small battery lid 3, and a push button member 5 is provided inside the small battery lid 3.
is held in this mounting part. Push button member 5
The back surface of the watch mechanism body cover 6 faces the inner surface of the watch mechanism body cover 6.

A guide hole 7 and a positioning hole 8 are transparently provided in the mounting portion 4 of the frame 1. A holding groove 10 is provided inside the positioning hole 8 by a holding piece 9 extending in an L-shape from the frame.

As shown in FIGS. 2 to 5, the push button 5 is integrally formed of, for example, plastic, and is provided with a spring portion 11 bent inward in a U-shape at its intermediate portion. A holding part 12 that is inserted into the holding groove 10 is provided at one end, and a positioning hole 8 is provided on the outer surface of the holding part.
A positioning claw 13 for preventing escape is provided in a protruding manner. An operating projection 14 extending outward and projecting through the guide hole 7 is provided at the other end. Also, a pressing protrusion 15 extending inwardly back to back with the operating protrusion
is installed protrudingly. Along the pressing projection 15, a guide pin 16, which is slightly longer than the pressing projection 15, is protruded to prevent excessive pressing.

A mechanical body (not shown) is built in the mechanical body cover 6 as usual, but as shown in the first and fourth figures, the lever 1 is moved toward the second hand wheel 17 in the gear train.
The tip of 8 extends so that it can be touched. Lever 18
As shown in the fourth and fifth figures, a pin 19 as a pressed member is provided to penetrate through the machine body cover 6 and protrude opposite to the tip surface of the pressing projection 15 at the other end of the push button member 5. . 20 is a pointer correction knob.

Therefore, in order to assemble this device, push button member 5
First, the operating protrusion 14 of the push button member 5 is passed through the guide hole 7, and when the push button member is swung clockwise in FIG. Then, the positioning claw 13 locks into the positioning hole 8, thereby holding the position. When removing the push button member 5, press the positioning pawl 13 from the positioning hole 8 to release the lock, and the holding part 12 will easily escape from the holding groove 10 and guide the operating protrusion 14. All you have to do is take it out through hole 7.

To operate this device, by pressing the operation protrusion 14 protruding from the guide hole 7, the push button member 5 is bent by the spring part 11, and the press protrusion 1
5 retreat inward. As a result, the pin 19 is pushed in, the lever 18 moves, and its tip contacts the second hand wheel 17 to stop the second hand. When the pressure on the operating projection 14 is released, the tip of the lever 18 separates from the second hand wheel 17, and the second hand wheel immediately begins to rotate. When the pin 19 is pushed in, the guide pin 16
When the tip surface of the machine body cover 6 comes into contact with the back surface of the machine body cover 6,
Since the pressing protrusion 15 cannot retreat any further, it is possible to prevent the pin 19 from being pushed in too much, thereby preventing damage to the internal mechanism.

Although the present embodiment is a push button device for temporarily stopping the second hand wheel of a watch or the like, the present invention is not limited to this embodiment.

As described above, according to this invention, since the push button member is integrally formed, the number of parts is small and the configuration is simple, and the push button member is attached to the frame by inserting it into the holding groove. Since only
It has great practical effects, such as extremely easy assembly and good workability.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, in which Fig. 1 is a partially cutaway front view showing the main parts, Fig. 2 is an enlarged front view of the push button member, Fig. 3 is a right side view of the same, and Fig. 4. 1 is an enlarged sectional view taken along lines in FIG. 1, and FIG. 5 is an enlarged sectional view taken along lines taken in FIG. 1. DESCRIPTION OF SYMBOLS 1...Frame body, 5...Push button member, 6...Machine body cover, 7...Guide hole, 10...Retaining groove, 1
DESCRIPTION OF SYMBOLS 1... Spring part, 12... Holding part, 14... Operating projection, 19... Pressed member.

Claims (1)

[Claim for Utility Model Registration] A frame body having a transparent guide hole and a retaining groove formed on the inner surface at a predetermined distance from the guide hole, and a spring bent in a U-shape in the middle part. a push button member having a holding portion inserted into the holding groove at one end, and an operating protrusion extending outward and penetrating the guide hole at the other end; A push button device comprising: a pressed member protruding from a mechanical cover built into the frame body opposite to the other end of the push button member.