JPS6327400Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a push button device, and its purpose is to provide a push button device that has a simple configuration, is easy to assemble, and can significantly reduce costs.

An embodiment of the present invention will be described below with reference to drawings of a tape running operation button device for a tape deck.
In the figure, 1 is a printed circuit board, and this board 1
Eight keyboard switches 2, two slide switches 3, and a remote control jack 4 are installed on the top. Of the eight keyboard switches 2 mentioned above, the switch in the right corner is the reset switch for the digital counter, and the remaining seven switches are used to command tape running operations such as record, play, pause, fast forward, rewind, stop, and record/mute. It's a switch. The printed circuit board 1 is connected to a tape running mechanism control printed circuit board (not shown) via a flat cable 5 and a flexible printed circuit board 6.

The printed circuit board 1 is covered with a cover 7 which is an integrally molded product of synthetic resin. That is, the elastic locking piece 8 integrated with the cover 7 is inserted and locked into the recess 1a of the printed circuit board 1, and the screw 9 is screwed into the case of the switch 3 and the case of the jack 4 through the hole 10 of the cover 7. The printed circuit board 1 and the cover 7 are integrated with each other.

The cover 7 is provided with holes 11 and 12 into which the operating portion 3a of the slide switch 3 and the jack 4 are inserted, as well as a plurality of holes 13. This hole 13
A pressing part 14 for operating the keyboard switch 2 is arranged inside, and this pressing part 14 is integrally molded with the cover 7 via hinge parts (thin parts) 15 at two places on both ends of one side edge. . The above pressing part 1
A push button 16 is attached to the upper surface of the button 4. Further, on the back surface of the pressing part 14, as shown in FIG.
14c and second regulating ribs 14d and 14e are integrally provided.

As shown in FIG. 3, the operating rib 14a comes into contact with the keyboard switch 2 to operate it when the pressing part 14 is pressed.On the other hand, the lower height of the four regulating ribs Second regulating rib 1
4d and 14e are for preventing overstroke of the pressing portion 14 against forces in the AB direction, as shown in FIG. That is, when a force is applied in the A direction, the rib 14d hits the cover 7, and when a force is applied in the B direction, the rib 14e hits the cover 7 to prevent overstroke. Also, the tallest one
As shown in FIG. 4, the regulating ribs 14b and 14c are designed to have an appropriate gap between them and the printed circuit board 1 during normal operation of the pressing part 14, but when operated with a large force, the printed circuit board It's starting to hit number 1. Note that the return force of the pressing portion 14 after being pressed is based on the elastic return force of the hinge portion 15.

By the way, as mentioned above, the pressing part 14 is covered with the cover 7.
Although forming the hinge part 15 integrally with the hinge part 15 is very advantageous in terms of cost and work, the molded hinge part 15 becomes weak in strength. Conventionally, there are materials that are advantageous in terms of strength as molding materials for hinges, such as polypropylene, but these are highly brittle at low temperatures, the hinge properties change depending on the orientation of the crystals, and they are not very strong in terms of strength. It has drawbacks such as poor dimensional stability during molding. In this embodiment described above, the cover 7 is formed using a normal molding material (ABS resin);
The pressing portion 14 is controlled by the second regulating ribs 14d and 14e.
The structure is such that the load applied to the hinge part 15 during overstroke is reduced, and the first regulating ribs 14b, 14c contact the printed circuit board 1 to protect the hinge part 15 when the pressing part 14 is abnormally operated. In addition, in the case of ABS resin, it is possible to process plating and sputtering, so the push button 1 can be attached to the pressing part 14.
Even without attaching the push button 6, the push button device can be completed by integrally molding the pressing portion 14 and the push button 16 and using the dough as is or by performing secondary processing.

As explained above, the push button device of the present invention has a small number of parts, so it is easy to assemble and can be manufactured at low cost.In addition, the push button device of the present invention can be easily assembled and manufactured at low cost, and overstroke is achieved by the function of the regulating ribs of two different heights provided on the pressing part. Therefore, damage to the hinge portion due to abnormal loads can be prevented, and an inexpensive and highly reliable push button device can be provided.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a push button device according to one embodiment of the present invention, and FIG. 2 is a rear perspective view of the push part of the push button device.
3 and 4 are side sectional views for explaining the operation. 1: printed circuit board, 2: keyboard switch, 7: cover, 14: pressing portion, 14b-1
4e...regulating rib, 15...hinge portion.

Claims (1)

[Scope of utility model registration request] A cover made of synthetic resin is attached to the printed circuit board on which the switch is attached so as to cover the printed circuit board, and a pressing section for operating the switch, which is rotatable by a hinge section, is integrally provided on this cover, The push button device further includes first and second regulating ribs having different heights that regulate the movement of the pressing portion.