JPH051124U - Push button switch device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a push-button switch device, take measures against static electricity at a low cost. [Structure] A push button (2) is fitted into a holding hole (1a) provided in a cabinet (1) of an electronic device, and a switch element (3) is incorporated into a printed circuit board (4).
To install. In such a push button switch device, a jumper wire (5) leading to the ground is wired on the printed board (4) near the lead terminal (3a) of the switch element (3).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a push button switch device provided in a cabinet or the like of electronic equipment.

[0002]

[Prior Art]

 Conventionally, in a remote control device, a TV electronic device of a CATV home terminal, or other electronic device, a push button switch device is configured as follows.

FIG. 3 is an exploded perspective view showing a conventional example, and FIG. 4 is a sectional view taken along line XX of FIG.

In a conventional push button switch device, a cabinet 1 is provided with a push button holding hole 1a, and a push button 2 is fitted into the hole 1a. On the other hand, the switch element 3 is installed on the printed circuit board 4 built in the electronic device, and the lead terminals 3a of the switch element 3 are soldered to the pattern of the printed circuit board 4 by 3b for electrical connection.

The printed circuit board 4 is attached to the cabinet 1, and when the push button 2 is pushed, the switch element 3 is pushed to operate.

The cabinet 1 and the push button 2 are often made of resin.

[0007]

[Problems to be solved by the device]

 Since the conventional push-button switch device has the structure shown in FIGS. 3 and 4, when a person touches the push-button 2, the static electricity (indicated by the symbol A) charged on the human body is indicated by the cabinet 1. It penetrates into the electronic equipment through the gap with the push button 2, jumps into the lead terminal 3a of the switch element 3 located at the shortest distance, and malfunctions the electronic circuit connected to the lead terminal 3a. Lead to destruction.

The present invention was devised to eliminate the above-mentioned conventional drawbacks.

[0009]

[Means for Solving the Problems]

 The present invention is a pushbutton in which a pushbutton is fitted into a holding hole provided in a cabinet of an electronic device, and a switch element that operates in response to the operation of the pushbutton is installed on a printed circuit board built in the electronic device. The switch device is characterized in that a jumper wire leading to the ground is wired on the printed circuit board near the lead terminal of the switch element.

[0010]

[Action]

 As described above, the present invention provides a jumper wire grounded at a position on the printed circuit board that is more susceptible to static electricity than other electronic circuits to be protected. Is guided by a jumper wire located at a position closer than the switching element and moves to, for example, a soldered ground pattern on a printed circuit board. This movement to the earth pattern prevents the switch element and especially the electronic circuit connected to the switch element from being malfunctioned or destroyed by static electricity.

[0011]

【Example】

 1 is an exploded perspective view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along line XX of FIG.

Those having the same functions as those in FIGS. 3 and 4 are denoted by the same reference numerals. Compared with the conventional example of FIGS. 3 and 4, jumper wires 5 and 5 are added. These jumper wires 5 and 5 are located at a position shorter than the distance between the gap between the cabinet 1 and the push button 2 and the lead 3a of the switch element 3, that is, in the vicinity of the lead 3a of the switch element 3 than the lead 3a of the switch element 3. It is installed at a position where static electricity can easily fly. The jumper wires 5 and 5 are more preferably soldered to the ground pattern 5a, 5a separated from the circuit ground of the printed circuit board 4.

Conventionally, as shown in FIG. 4, static electricity A that has entered through the gap between the cabinet 1 and the push button 2 jumps to the lead terminal 3a of the switch element 3, which is the metal portion having the shortest spatial distance, The electronic circuit connected to the lead terminal 3a may malfunction or be destroyed. However, in this example, as shown in FIG. 2, the static electricity A jumps to the jumper wire 5, which is the metal portion having the shortest spatial distance, and is guided to the ground pattern of the printed circuit board 4. In addition, when the ground pattern is separated from the circuit ground as in the embodiment, the electronic circuit can be less affected.

Of course, even if it is connected to the circuit ground, a desired prevention effect can be expected, and separation is not always necessary. And, especially when the cabinet 1 and the like are molded with resin, this countermeasure against static electricity is very effective.

[0015]

[Effect of the device]

 As described above, according to the present invention, (1) A measure against static electricity can be implemented even when a spatial distance cannot be mechanically secured.

(2) Since the jumper wire is only attached to the printed circuit board, the cost required for the countermeasure is low.

(3) Constraints such as thinning of electronic devices, button arrangement, and size are alleviated, and designability is improved.

It is possible to provide a useful push button switch device having high practical value.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is an exploded perspective view showing a conventional example.

4 is a sectional view taken along line XX of FIG.

[Explanation of symbols]

 1 Cabinet 1a Holding hole 2 Push button 3 Switch element 3a Lead terminal 5 Jumper wire

Claims (1)

[Claims for utility model registration] 1. A print in which a push button is fitted into a holding hole provided in a cabinet of an electronic device and a switch element which operates in response to the operation of the push button is built in the electronic device. In the push button switch device installed on the board,
A push-button switch device characterized in that a jumper wire leading to a ground is wired on a printed board near the lead terminal of the switch element.