JPH0351865Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a switch switching device for switching a push switch, and in particular, the area of the operating part of the push button for operating the push switch is the same as that of the push switch that is moved when switching. The present invention relates to a switch switching device suitable for use in a device having a large area.

(b) Conventional technology In electrical equipment, for example,
A push switch as shown in the above publication is used to change various operations, and as a switch switching device for switching such a push switch, a switch as shown in FIG. 3 has conventionally been used. The switch switching device shown in FIG. 3 has a movable part 1 that is supported so as to be able to return to the pressing force, and a push switch 2 that is switched by pressing the movable part 1, and a push switch 2 that operates the push switch 2 . The operating section 3 for the purpose and the operating section 3
As shown in FIG. 4A, the push switch 2 has a terminal 6 attached to a printed circuit board 7 by soldering. , the push button 5 is formed on both sides of the operating section 3 by having the tip of the pressing pin 4 contact and support the movable section 1 of the push switch 2 , and being urged upward by the return force of the movable section 1. The operation part 3 protrudes from the through hole 9 of the front panel 8 of the electrical device with the collar piece 3a in contact with a rib 10 formed at the edge of the through hole 9 of the front panel 8, and the push button 5 is supported by points. By the way, push switch 2
Since it is said that pressing the movable part 1 with a small area gives a better operating feeling, this switch switching device has a better operating feeling.

(c) Problems to be solved by the invention However, in devices where the push button 5 is supported at a point, such as the above-mentioned switch changeover device, a strong pressing force is applied to the push button 5 , causing the push button to There is a risk that an excessive load will be applied to the movable part 1 of the push switch 2 and the push switch 2 will be destroyed. In addition, if the push button 5 is one in which the area of the operating part 3 is large and the end of the operating part 3 is located far away from directly above the movable part 1 of the push switch 2 , the end of the operating part 3 may be When the push button 5 is pressed in the direction of arrow A, the push button 5 tilts significantly as shown in FIG.
If the push pin 4 falls off from the movable part 1 of the push switch 2 , making it impossible to switch the push switch 2 , or if a strong pushing force is applied with the push button 5 tilted, the push pin 4 may fall off. Since a force deviating from the planting direction is applied to the pressing pin 4, in the worst case, the pressing pin 4 may break.

On the other hand, Utility Model Application No. 57-29024 and Utility Model Application No. 57-29024
As shown in Japanese Patent No. 115129, a switch switching device is known in which a recess is formed in the end surface of the pressing part of a push button, and the end of the movable part of the push switch is inserted into the recess.

However, the switch switching devices disclosed in the above-mentioned publication all have a function to restrict the tilt of the push button when the push button is tilted and displaced, or to control the tilt of the push button when a strong pressing force is applied to the push button. There is no idea of regulating unreasonable pressure displacement.

The present invention provides a switch changeover device that has been made in view of the above points.

(d) Means for solving the problem The switch switching device according to the present invention includes a push switch that is switched by pressing a movable part that is supported so as to be able to return to the pressure force, and a push switch for operating the push switch. The pusher comprises an operating section and a pressing section that is erected from the back side of the operating section and has a recess formed in the center of the distal end surface facing the movable section of the push switch so that the movable section is placed in contact with the push switch. The push button is provided with a push button, and the distance from the end of the tip surface of the pressing part to the shoulder of the push switch body is made to be slightly larger than the stroke of the movable part required to switch the push switch. shall be.

(e) Effect This invention makes the end of the tip surface of the pushing part that faces the movable part of the push switch contact the main body of the push switch when the amount of movement of the push button reaches a predetermined amount, thereby preventing the push button from moving more than necessary. We are trying to regulate the

(F) Embodiment FIG. 1 is a developed perspective view showing an embodiment of the present invention, in which reference numeral 11 has a movable part 12 supported so as to be able to return to a pressing force, and the movable part 12 is pressed. A push switch 13 is operated by the push switch 11 .
4 and the pressing part 1 planted from the back surface of the operating part 14
5, 16 is a printed circuit board to which the push switch 11 is attached, and 17 is a through hole 18 through which the operating portion 14 of the push button 13 is passed.
The front panel has a

The operating portion 14 of the push button 13 has a collar piece 14a formed on both sides, and a protrusion 14c with a positioning hole 14b formed on the front surface. A recess 15a is formed in the center of the front end surface of the push switch 11 facing the movable part 12. The front panel 17 is made of a synthetic resin material, and has a through hole 18 on the back side, which is the surface facing the flange piece 14a.
A rib 17a is integrally molded on the edge of the protrusion 14c, and a positioning pin 17b is integrally molded on the surface of the protrusion 14c facing the positioning hole 14b.

The switch changeover device constructed in this way is first constructed by inserting the positioning pin 1 of the front panel 17 into the positioning hole 14b of the protrusion 14c of the operating portion 14 of the push button 13 .
7b is inserted and positioned, and the push button 13 is placed from the back surface of the front panel 17 so that the operation surface of the operation part 14 protrudes from the through hole 18. In this state, the push button 11 is used to solder the terminal 11a. Assembly is completed by placing the printed circuit board 16 attached to the predetermined position. In this case, as shown in FIG .
The recess 15a is the movable part 1 of the push switch 11 .
2, the movable part 12 is supported by the pressing part 1.
It is surrounded by the end of the tip surface of 5. Further, the push button 13 is urged upward by the return force of the movable part 12, so that the collar piece 14a of the operating part 14 is supported in contact with the rib 17a of the front panel 17, and the tip surface of the pressing part 15 The distance l from the end of the push switch 11 to the shoulder of the main body of the push switch 11 is the distance l between the movable part 12 necessary to switch the push switch 11 .
It is designed so that the stroke is slightly larger than that of the previous stroke.

In this switch switching device, when the vicinity of the center of the operating section 14 of the push button 13 is pressed, the push button 13 is moved vertically, so that the end of the tip surface of the pushing section 15 touches the shoulder of the main body of the push switch 11 . The movable part 12 is moved by a predetermined amount immediately before it is brought into contact with the movable part 12,
The push switch 11 is switched. Furthermore, when the longitudinal end of the operating section 14 is pressed in the direction of arrow B, the positioning pin 17b is bent due to the elasticity of the synthetic resin material, so the push button 13 moves at an angle; As shown in FIG. 2, the tip end of the pressing portion 15 comes into contact with the shoulder of the main body of the push switch 11 , and the push switch 11 is switched at the same time as it no longer tilts. Furthermore, even if the operating portion 14 is pressed with excessive force, the tip end of the pressing portion 15 comes into contact with the shoulder of the main body of the push switch 11 , so that the push switch 11 is protected from destruction.

FIG. 5 is a sectional view showing another embodiment of the present invention.
A small protrusion 19b is provided in the center of the recess 19a of the pressing part 19 of the push button 18 , and the small protrusion 19b is supported in contact with the movable part 21 of the push switch 20 , as in the conventional example shown in FIG. , so that an operating feeling similar to that supported by points can be obtained.

(g) Effects of the invention As described above, according to the invention, the distance from the end of the tip surface of the pressing part of the push button to the shoulder of the push switch body can be adjusted by the stroke of the movable part required to switch the push switch. Since the push button is designed to have a smaller tolerance, when the push button is tilted and displaced, the end of the tip surface of the pressing part comes into contact with the shoulder of the push switch body, thereby regulating the tilt of the push button. Moreover, even when a strong pressing force is applied to the push button, the end of the tip surface of the pressing part comes into contact with the shoulder of the push switch main body, thereby preventing unreasonable pressing displacement of the push button.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention;
Figures 2A and 2B are cross-sectional views for explaining the present invention, Figure 3 is an exploded perspective view showing a conventional switch switching device, and Figures 4A and 4B are for explaining a conventional switch switching device. FIG. 5 is a sectional view showing another embodiment of the present invention. Explanation of main drawing numbers, 11 ...
12...Movable part, 13 ...Push button, 14...Operation part, 15...Pushing part, 15a...Recessed part, 16...
Printed circuit board, 17...Front panel.

Claims (1)

[Scope of utility model registration request] A push switch that is switched by pressing a movable part that is supported so as to be able to return to a pressing force, an operating part for operating the push switch, and a movable part of the push switch that is erected from the back side of the operating part. a push button comprising a pressing part having a recess formed in the central part of the distal end surface facing the movable part in contact with the movable part;
A switch switching device characterized in that the distance from the end of the tip surface of the pressing part to the shoulder of the push switch body is slightly larger than the stroke of the movable part required to switch the push switch.