JP2562750Y2 - Push button switch device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push button switch device.

[0002]

2. Description of the Related Art As a conventional push-button switch device, for example, as shown in a perspective view of FIG. 7A and an exploded perspective view of FIG. A base 103, a cover 104 detachably fitted to the base 103, and a push button 105 supported on the cover 104 so as to be able to advance and retreat toward the base 103. The push button 104 is advanced by the elastic force of the movable electrode 102. Some are configured to bias in a direction.

Further, for example, a perspective view of FIG.
As shown in the exploded perspective view of (b), a pair of fixed electrodes 201 and 2
01, a cover 204 detachably fitted to the base 203, and a base 203
Push button 205 supported to be able to advance and retreat toward
And a contact spring 202 fixed to the inner surface of the push button 205. In this conventional example, the push button 205 is provided with a push button operation unit 205a and a plate-like portion 205b extending from the push button operation unit 205a along the inner surface of the cover 204, and the tip of the plate-like portion 205b is provided on the inner surface of the cover 204. The push button 205 is configured to be engaged with the formed projection 204a and to swing forward and backward about the engaged portion. On the inner surface of the cover 204, a support shaft 204b penetrating the base end of the plate-like portion 205b projects toward the base 203, and a stop washer 207 and a plate-like portion 205b fitted to the distal end of the support shaft 204b. A return spring 206 is arranged between the spring and the base end of the spring.

[0004]

In the prior art shown in FIG. 7, the resistance to the operating force of the push button 105 is determined by the movable electrode.
Since only the elastic force of 102 acts, the operational feeling is awkwardly felt, and the movable electrode 102 may be broken by fatigue, which is disadvantageous in increasing the durability. In the conventional example shown in FIG. 8, the elasticity of the return spring 206 becomes a resistance to the operating force of the push button 205. Therefore, by reducing the elastic coefficient of the return spring 206, a soft feeling of operation can be obtained, and there is no possibility that the contact point 202 is broken by fatigue.

However, the elasticity of the return spring 206 is limited to the plate-like portion 205b.
Therefore, in order to operate the main body 205a farther from the fulcrum of the push button 205, it is necessary to operate with a force stronger than the elasticity of the return spring 206. As a result, there is a certain limit in enhancing the operational feeling, and dissatisfaction remains. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a push button switch capable of enhancing the operational feeling.

[0006]

According to the present invention, there is provided a base for supporting a pair of fixed electrodes, a cover detachably fitted to the base, and a push button supported on the cover so as to advance and retreat toward the base. , A return spring for pushing and pushing the push button, and a push button switch device including a conductive piece fixed to the inner surface of the push button and in contact with the pair of fixed electrodes, wherein the push button is located at the cover upper wall opening, and A thin plate-shaped portion connected to the push button operation portion and extended into the cover along the inner surface of the cover upper wall is integrally formed, and the tip of the plate-shaped portion is fixed to the cover, and a return spring is provided. The push button operating portion located at the cover opening covers the cover peripheral wall, and the receiving seat protruding in the inner surface direction of the peripheral wall positioned at the cover opening and the inner surface of the push button operating portion cover the cover peripheral wall, and the cover and the push button The same as the operation unit Located on the surface to match the shape of the cover peripheral wall, a stop claw is provided on both sides of the button operation unit of the push button,
The push button switch device has a stopper claw protruding from an inner peripheral surface on both sides of a peripheral wall of a cover facing the stop claw.

[0007]

Since the plate-like portion is formed to be thin, when its tip is fixed to the cover, it acts as a leaf spring against the operating force of the push button. Therefore, even if the elastic coefficient of the return spring is reduced, the push button can be sufficiently advanced. In addition, by disposing the return spring inside the push button operation unit, the push button can be operated with a force equal to or less than the elasticity of the return spring and the plate-shaped portion.

Further, when the tip of a flathead screwdriver is inserted between the notch step portion of the cover and the tongue and the gap is pushed up by leverage, the engagement between the engaging portion and the engaging claw can be released. Wiring to terminal screws can be done freely from the table.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to a specific embodiment shown in the accompanying drawings. FIG. 1 is an exploded perspective view of a push-button switch device according to an embodiment of the present invention. The push-button switch device has terminal screws 1a and 1a for connecting lead wires.
Base 3 for supporting a pair of fixed electrodes 1 with 1a
A cover 4 detachably fitted to the base 3;
A push button 5 supported by the cover 4 so as to be able to advance and retreat toward the base 3; a return spring 6 for urging the push button 5 forward and backward; and being fixed to the inner surface of the push button 5 and in contact with the pair of fixed electrodes 1.1. And an angled conductive piece 2.

The base 3 has a surrounding wall 3a surrounding the fixed electrodes 1.1, a tongue 3b for disassembling operation protruding from one side of the cover 3 for removing the cover 4 from the base 3, and engaging claws 3c.3.
c, and is formed in a shape inscribed in the cover 4. The cover 4 includes a peripheral wall 4a surrounding the periphery of the rectangle,
And an upper wall 4b covering the upper surface thereof. A half of the upper wall 4b is provided with a cutout opening, and an operation unit of the push button 5 is located. As shown in FIG. 2, the engaging claw 3 is provided on the inner surface of the peripheral wall 4a.
Engagement pieces 4c and 4c that engage with c and 3c are formed.

As shown in FIG. 3, the push button 5 covers the opening 4d of the cover 4, and is located on the same plane as the upper wall 4b of the cover 4 and matches the outer peripheral shape of the opening 4d. A thin plate-like portion 5b extending from the portion 5a along the inner surface of the cover 4 is integrally formed. As shown in FIGS. 1 and 4, the tip of the plate-like portion 5b has a chevron shape. And is fixed to the inner surface of the upper wall 4b of the cover 4 at three points.

As shown in FIGS. 1 and 5, a receiving seat 4e extends in the direction of the inner surface of the peripheral wall 4a located at the opening 4d of the cover 4.
Are provided so as to receive the return spring 6 on the receiving seat 4e. A spring support shaft 4f for preventing buckling of the return spring 6 is provided upright on the receiving seat 4e. Then, the return spring 6 received by the receiving seat 4e receives the push button operation portion 5a of the push button 5 so as to urge forward.

As shown in FIG. 1 and FIG.
Are provided on both sides of the push button operating portion 5a to stop the push button 5 from moving forward. A stopper claw 4g for receiving the stop claw 5c from above is provided on the inner periphery of both sides of the peripheral wall 4a of the cover 4. Protruding from the surface. As a procedure for assembling the push button switch device, for example, the following procedure can be adopted.

First, the return spring 6 is supported on the receiving seat 4e of the cover 4 and the spring support shaft 4f, and the plate-like portion 5b of the push button 5 in which the conducting piece 2 is fixed to the inner surface of the push button operating portion 5a is covered.
Of the push button operating portion 5a into the cover 4 until the stop claw 5c is positioned below the stopper claw 4g. Thereafter, the protrusion on the inner side of the upper wall of the cover 4 is fitted into the hole provided in the plate-shaped portion 5b, and is fixed at a predetermined position.

As a result, the assembly of the cover 4 and the push button 5 is completed, the return spring 6 urges the push button operating portion 5a of the push button 5 to advance, and when the push button operating portion 5a is pushed in, the plate-like portion 5b Acts as a leaf spring, and the return spring 6
At the same time, the push button operation section 5a of the push button 5 is pushed forward. The base 3 is pushed into the cover 4 on which the push button 5 is assembled, and the engaging claws 3c are pushed over the engaging portions 4c.
Is pushed into the upper wall 4b side, the assembly of the cover 4 and the base 3 is completed.

The base 3 is provided on one side of the peripheral wall 4a of the cover 4.
Notch step 4 for disassembling operation into which tongue piece 3b for disassembling operation
h is formed. When a tip such as a flat-blade screwdriver is inserted between the notch step 4h and the tongue piece 3b and the gap is pushed up by leverage, the engagement between the engaging portion 4c and the engaging claw 3c is increased. Can be released, the cover 4 and the base 3 can be disassembled,
Terminal screw 1a of fixed electrode 1.1 supported on base 3
The wiring to 1a can be freely performed from the table.

The base 3 is provided with screw holes 18 for fixing to a wall or the like, and the base 3 can be fixed to a wall or the like with screws. In this push-button switch device, since the plate-shaped portion 5b is formed to be thin, when its tip is fixed to the cover 4, it acts as a leaf spring against the operating force of the push button 5. Therefore, the return spring 6
, The push button 5 can be sufficiently advanced.

Further, the return spring 6 is connected to the push button operating section 5 of the push button 5.
By arranging the push button 5 inside the push button 5, the push button 5 can be operated with a force equal to or less than the elasticity of the return spring 6 and the plate-shaped portion 5 b, and the operation feeling of the push button 5 is more softly and smoothly felt and enhanced. Will be. Further, in this embodiment,
The upper half of the upper wall 4b of the cover 4 is opened and this opening 4d is opened.
A push button operation unit 5a of the push button 5 covers the whole, and the cover 4
Since the upper wall 4b and the push button operation portion 5a of the push button 5 are located on the same plane and match the outer peripheral shape of the opening 4d, that is, are formed in a rectangular parallelepiped shape with rounded corners, the external shape is simple, It looks better.

[0019]

According to the present invention, as described above, the push button operation part and the thin plate-like part are integrally formed, and the thin plate-like part can act as a spring, and the elastic coefficient of the return spring is reduced. Since the return spring can be made smaller and the return spring is arranged inside the push button operation part of the push button, the push button operation part can be pushed in with a force equal to or less than the elasticity of the return spring and the plate-shaped part. Pushed back by the elasticity of the shape, a soft and smooth operation feeling is obtained, and the operation feeling is enhanced. Also,
In the present invention, stop claws are provided on both sides of the push button operation section of the push button, and stopper claws are protruded on the inner peripheral surfaces of both sides of the peripheral wall of the cover facing the stop claw, so that the advance direction of the push button is restricted. it can.

In particular, in the present invention, the upper wall of the cover is notched and opened, and the entire cutout is covered by the push button operating portion of the push button, and the cover and the push button operating portion of the push button are located on the same plane and opened. When it is configured to match the outer peripheral shape of the portion, the external shape is simplified, and excellent design is obtained. Further, in the present invention, a notch step provided below the seat provided on the inside of the peripheral wall of the cover and a tongue piece protruding on the outside of the peripheral wall of the base are provided, and an engaging piece is provided on the inside of the peripheral wall of the cover for engaging with the peripheral wall of the base. Since it is a push button switch device provided with a claw, if the gap between the engagement portion and the engagement claw can be released by inserting the tip of a flathead screwdriver and pushing the gap apart like a lever,
Wiring to terminal screws can be done freely from the table.

[Brief description of the drawings]

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

FIG. 2 is a central cross-sectional view of one embodiment of the present invention.

FIG. 3 is a perspective view of the cover and the push button according to the embodiment of the present invention as viewed from above.

FIG. 4 is a perspective view of the inside of the embodiment of the present invention in which a cover and a push button are assembled.

FIG. 5 is a central longitudinal sectional view of one embodiment of the present invention.

FIG. 6 is a longitudinal sectional side view in which the cover and the push button of the embodiment of the present invention are engaged.

FIG. 7 is a perspective view and an exploded perspective view of a conventional example.

FIG. 8 is a perspective view and an exploded perspective view of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Fixed electrode 2 ... Conducting piece 3 ... Base 4 ... Cover 4d ... Opening 5 ... Push button 5a ... Push button operation part 5b ... Plate-shaped part 6 ... Return spring

Claims (2)

(57) [Scope of request for utility model registration] 1. A base for supporting a pair of fixed electrodes, a cover detachably fitted to the base, a push button supported on the cover so as to be able to advance and retreat toward the base, and a return for urging the push button forward and backward. In a push button switch device including a spring and a conductive piece fixed to an inner surface of the push button and in contact with the pair of fixed electrodes, the push button is connected to the push button operation unit and the push button operation unit located at the cover upper wall opening. A thin plate-like portion extending into the cover along the inner surface of the cover upper wall, and integrally forming the plate-like portion, fixing a tip of the plate-like portion to the cover, and a return spring at an opening of the cover; The abutment seat protruding in the inner surface direction and the inner surface of the push button operation unit are brought into contact with each other, the push button operation unit located at the cover opening covers the cover peripheral wall, and the cover and the push button operation unit are integrated. The shape of the cover wall located on the same plane A push button switch device comprising: a stop button provided on both sides of a push button operation unit of a push button; and stopper protrusions protruding on inner surfaces of both sides of a peripheral wall of a cover facing the stop claw. 2. A notch step provided below a seat provided inside a peripheral wall of a cover and a tongue protruding outside a peripheral wall of a base are provided. The push button switch device according to claim 1, further comprising: