JPH054182Y2 - - Google Patents

Description

[Detailed explanation of the idea] <Industrial application field> The present invention relates to a push button switch.

<Prior art> A conventional push button switch has a push button and an illumination device in the front half of the main body case, a switch part in the rear half, and the operating force of the push button is transmitted through a link member provided in the center of the case. The structure was such that the signal was transmitted to the actuator of the switch section.

<Problems to be solved by the invention> The invention aims to further reduce the size of the pushbutton switch, and to improve the structure of the pushbutton switch, which can be applied to both illuminated and non-illuminated types. We propose a link mechanism that transmits information to the

<Means for Solving the Problems> The push button switch of the present invention has a rectangular main body case with four side walls, a push button provided on the front surface of the main body case, and a push button on the inner surface of two opposing side walls of the main body case. a central holder held between the centers and having a guide surface parallel to the other two side walls; two microswitches held between both sides of the central holder and the inner surfaces of the other two side walls of the main body case; A central shaft portion is supported by the guide of the central holder so as to be freely displaceable in the front and back direction, and link portions extending forward from both ends of the shaft portion and engaging with the push button are integrally formed, and one end of the central shaft portion is connected to the two ends of the central shaft portion. It is characterized by having a link member that engages with the actuator of each microswitch.

<Operation> When the push button is pressed, the two link parts are displaced, and one end of the central shaft part integrally formed with the link parts applies operating force to the actuators of the two microswitches. The central holder and two micro switches are arranged in parallel, so the length in the front and back direction is shortened, and the two links extend along the side wall of the main case, so the illumination part can be placed between them. A space is formed.

<Example> Fig. 1 shows a vertical cross-sectional view (A-A' cross-section in Fig. 2) of an embodiment of the present invention, and Fig. 2 shows a vertical cross-sectional view (A-A' cross-section in Fig. 1) of the embodiment of the present invention. -B' cross section), and FIG. 3 is a partially cutaway perspective view of the central holder and the link member.

The main body case 1 has a rectangular front shape, and has four side walls 2A, 2B, 3A, and 3B extending rearward from its four sides.
It has a partition wall 4 that partitions the front and rear parts. A push button 5 is housed in the front part of the main body case 1, and a central holder 6 and two push buttons on both sides thereof are housed in the rear part of the main body case 1.
micro switches 7 and 8 are housed.

The central holder 6 has a flat rectangular parallelepiped shape as a whole, and both ends of the central holder 6 in the longitudinal direction are connected to the two side walls 2 of the main body case.
A guide groove that is held between the centers of the inner surfaces of A and 2B and has opposing guide surfaces 9A and 9B that are parallel to the other two side walls 3A and 3B of the main body case so as to further divide the flat shape in the thickness direction. is formed,
The central shaft portion 12 of the link member 10 is inserted into the guide groove.
is supported so as to be freely displaceable in the front and rear directions. This link member 10 is integrally formed with two link parts 11A, 11B extending forward from both upper and lower ends of the central shaft part 12, and operating parts 13A, 13B for applying operating force to the two micro switches 7, 8. has been done. Furthermore, a heart-shaped cam 15 constituting a push button locking mechanism is integrally formed between the operating parts 13A and 13B. In addition, the central holder 6
One compression spring 14 is provided at the rear of the central portion of the central shaft portion 12 of the micro-switches 7 and 8, and applies the restoring force of the spring built into the micro-switches 7 and 8.

<Effects of the invention> According to the invention, the central holder is held between the centers of the inner surfaces of two opposing side walls of the main body case and has a guide surface parallel to the other two side walls, and the central shaft portion is supported by the guide. A link member is provided that is supported so as to be freely changeable in the front and back direction, extends forward from both ends of the shaft portion, has two link portions integrally formed, and has one end of the central shaft portion engaged with the actuator of the two microswitches. The number of parts is small, the push button is compact, and a space is created behind the push button to house the illumination device, so it can be used for both illuminated and non-illuminated types. be.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of an embodiment of the present invention;
Figure 2 is a vertical cross-sectional view of the embodiment in the left and right direction;
The figure shows the central holder 6 and link member 1 of the upper and lower embodiments.
FIG. 1... Main body case, 2A, 2B... Two side walls, 3
A, 3B...Other two side walls, 5...Push button, 6...Central holder, 7, 8...Micro switch, 9A,
9B...Guide surface, 10...Link member, 11
A, 11B... Link portion, 12... Central shaft portion.

Claims (1)

[Scope of utility model registration request] A rectangular main case having four side walls, a push button provided on the front of the main case, and a push button held between the centers of the inner surfaces of the two opposing side walls of the main case,
a central holder having guide surfaces parallel to the other two side walls, two microswitches held between both side surfaces of the central holder and the inner surfaces of the other two side walls of the main body case, and a central shaft supported by the guides of the central holder so as to be freely displaceable in the forward and backward directions, link portions extending forward from both ends of the shaft and engaging with the push buttons are integrally formed, and one end of the central shaft engages with the actuators of the two microswitches.