JP2593514Y2 - Push button switch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alternate type push button switch which can be used for various electronic devices and the like.

[0002]

2. Description of the Related Art An alternate type push button switch generally called a push-push switch includes a box 1 formed of an insulating material and a common terminal 2 planted on the bottom of the box 1 as shown in FIG. , Fixed terminals 3 and 4, a movable contact piece 5 supported so as to be able to perform a seesaw movement with the common terminal 2 as a fulcrum, and a movable contact piece support that supports the movable contact piece 5 so as to be able to perform a seesaw movement without displacement. Body 6 and push rod 7 for converting movable contact piece support 6
A rod receiver 8 that supports the push rod 7 and performs a switching operation, a spring 9 that presses the push rod 7 toward the movable contact piece support 6,
The inclined surfaces 8A formed on the upper surface of the rod receiver 8 and opposite to each other,
8B, the pin 11 is engaged with the free play end of the rod receiver 8, and the pin 11 is used to change the rod receiver 8. The push button storage unit 1 for supporting the spring 13 and the push button 12 so as to be freely movable.
4.

[0003]

In the conventional alternate type push button switch, the box body 1 and the push button storage section 14 are separately formed , and the movable contact piece support 6 is turned in the direction of change.
Bar 8, push bar 7, and spring
In this respect, there are disadvantages in that the number of parts is large, the number of assembly steps is large, and the cost is high.

For this reason, the rod holder 8, the push rod 7 and the spring 9 are omitted.
In short, the lower end of the repulsion spring 13 is directly engaged with the movable contact support 6.
And the reaction force of the repulsion spring 13 is directly applied to the movable contact support 6.
It is conceivable to use a structure that gives
At this time, the direction of the inclination of the movable contact piece support 6 is
Generates a reaction force that attempts to return to the opposite direction, and is movable
The contact support 6 is returned to the horizontal position,
There are inconveniences that cannot be maintained. For this reason, conventionally,
8, a push rod 7, a spring 9, etc.
Thus, the movable contact piece support 6 is maintained in the converted state.

The purpose of this invention is to reduce the number of parts,
It is an object of the present invention to provide an alternate-type push button switch whose structure can be simplified and assembly can be easily performed.

[0006]

In the present invention, the box and the push button housing are integrally formed of a resin material, and the step of combining the box and the push button housing is omitted, and the rod support and the movable contact piece support are omitted. The body is integrated, and the push rod, the spring for pressing the push rod, and either the movable contact piece support or the rod receiver are omitted by the integration.

According to the structure of the present invention, the number of parts is reduced, the assembling is facilitated, and there is obtained an advantage that it can be manufactured at low cost.

[0008]

1 to 7 show an embodiment of the present invention.
1 shows a steady state, FIG. 2 shows a state in which the push button 12 is pressed halfway, and FIG. 3 shows a state in which the switching is completed by the push button 12 being pressed. As shown in the drawing, in the present invention, the rod support and the movable contact support are integrated, the reaction force of the repulsion spring 13 is used as the return force of the push button 12, and the rod support and the movable support are supported. The present invention is characterized in that the integrated object 16 (hereinafter, referred to as a rod support and a movable contact piece support) is used as a force for pressing the support against a fulcrum.

For this purpose, a spring receiving plate 17 is provided at the lower end of the repulsion spring 13. The spring receiving plate 17 is, as shown in FIG.
The planar shape long in the long side direction is formed by a rectangular insulating plate. A slit 17A is formed from the top surface to the bottom surface, and the pin 11 is freely penetrated from the top surface to the bottom surface through the slit 17A. Triangular protrusions 17B are formed on both sides of the slit 17A on the bottom side of the spring receiving plate 17. The tip of the triangular projection 17B is supported by a rod support and movable contact piece support 1.
6 are formed in the recesses 16A provided in the spring receiving plate 17, and projecting surfaces 17C extending downward are formed at both ends of the spring receiving plate 17.
Abuts against the inner wall surface of the box 1 so that the spring receiving plate 17
Has a structure that restricts excessive rotation.

As shown in FIG. 6, the rod receiving / moving contact piece support 16 has inclined surfaces 8A and 8B which are inclined in opposite directions to each other between the portions where the concave portions 16A are formed. A groove 16 </ b> B for supporting the movable contact piece 5 is formed on the bottom surface side of the rod receiving / movable contact support 16. This example shows a case where two concave grooves 16B are formed to support two movable contact pieces 5.

The movable contact piece 5 is formed by bending a conductive spring material into a U-shape. A common terminal contact portion 5 that contacts the common terminal 2 at the center of the free end side bent in the U-shape.
A is formed, and contact portions 5 with the fixed terminals 3 and 4 are formed at both ends.
B and 5C are formed. These common terminal contact portions 5A and contact portions 5B and 5C are connected to the common terminal 2 as shown in FIG.
And the fixed terminals 3 and 4 are sandwiched therebetween to maintain electrical contact.

A pair of shafts 16C protrude from the side surface of the rod receiving / movable contact piece support 16. The shaft 16C is engaged with and positioned by a concave portion 18B formed by a projection 18A formed on a bottom plate 18 covering the opening surface of the box 1. Shaft 16C
A projection 16D is formed on the lower side, and the rod receiving and movable contact piece support 16 moves in a seesaw motion using the projection 16D as a fulcrum. According to the structure described above, a return force is applied to the push button 12 by the reaction force of one repulsion spring 13 and a pressure contact force toward the bottom plate 18 can be applied to the rod receiving / movable contact piece support 16. The movable contact piece 5 can be brought into contact with and separated from the fixed terminals 3 and 4 by this pressure contact force.

[0013]

As described above, according to the present invention, the push button storage portion 14 and the box 1 can be integrally formed of a resin material. The bottom of the box 1 is open,
Assembly can be performed by inserting components in the order of the push button 13, the pin 11, the repulsion spring 13, the spring receiving plate 17, the rod receiving / movable contact piece support 16, and the bottom plate 18 from the opening on the bottom side. Therefore, assembly can be easily performed.

In addition, since the push button storage section 14 and the box 1 are integrated, and the rod support and the movable contact piece support are integrated, the process of assembling the push button storage section 14 to the box 1 and the conventional method are used. The push rod 7 and the spring 9 are unnecessary, and the number of components can be reduced. Also in this respect, the assembly can be simplified and cost reduction can be expected. In addition, there is an advantage that the shape can be reduced because the number of parts is reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a state in which the push button of the push button switch according to the present invention is slightly pressed;

FIG. 3 is a cross-sectional view showing a state where the push button switch according to the present invention has completed the reversing operation.

FIG. 4 shows a push-button switch according to the present invention shown in FIG.
Sectional drawing on the -A line.

FIG. 5 is a perspective view for explaining the structure of a spring receiving plate used in the embodiment of the present invention.

FIG. 6 is a perspective view for explaining a structure of a rod receiving and movable contact piece support used in the embodiment of the present invention.

FIG. 7 is a perspective view for explaining the structure of the movable contact piece used in the embodiment of the present invention.

FIG. 8 is a cross-sectional view for explaining a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box body 2 Common terminal 3, 4 Fixed terminal 5 Movable contact piece 11 Pin 12 Push button 13 Rebound spring 14 Push button storage part 16 Rod support / movable contact piece support 17 Spring receiving plate 18 Bottom plate

Claims (1)

(57) [Scope of request for utility model registration] 1. A. First Embodiment B. an insulating case in which a box housing the switch unit and a push button storage unit supporting the push button movably are integrally formed; B. a bottom plate that closes a bottom opening of the insulating case and leads terminals from the bottom of the insulating case; D. a movable contact piece that moves in a seesaw motion around the position of the common terminal protruding inside the bottom plate; A rod support and a movable contact piece support that straddles the movable contact piece, supports the movable contact piece, has inclined surfaces opposite to each other on the upper surface, and is formed of an insulator that moves in a seesaw motion with the movable contact piece. And E. One end is pressed against and supported by a hole formed on the back side of the push button housed in the push button housing portion of the insulating case, and the other end is formed on the rod receiving / movable contact piece support body with opposite inclined surfaces. either to one and opposite, by depressing operating the push button, to seesaw motion the rod受兼movable contact piece support engages the end portion of the Bo受and movable contact piece support, the movable B. a pin for changing the contact state of the contact piece; A slit for passing the pin, provided with a projection and protruding downwardly on both sides of the slit, the projection engages the recess formed on the upper surface of the Bo受and movable contact piece support, the rod Linked to the seesaw movement of the receiving and movable contact support
Pressure on the rod support and movable contact support
G. a spring receiving plate for applying a contact force ; A repulsion spring interposed between the spring receiving plate and the push button, giving a restoring force to the push button for the pushing operation, and applying a pressure contact force in the switching direction to the rod receiving / movable contact support. A push button switch characterized by the following.