JP2604618Y2 - 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 a push-button switch which is rotatably mounted on an operation panel and which operates an electric ON / OFF operation by the rotation.

[0002]

2. Description of the Related Art Conventionally, pushbutton switches as shown in FIGS. 5 to 8 have been known for use in electric equipment such as various acoustic devices.

A push button switch 1 shown in FIGS. 5A, 5B and 5C has an elastic mounting member 3 on the back surface of an operation panel 2 having an opening 2a.
After inserting the projections 1a, 1a.
The projections 1 a are melted to hold the push button switch 1 on the mounting member 3.

As shown in FIGS. 5B and 5C, the mounting member 3 allows the push button switch 1 to rotate inwardly of the operation panel 2 by the pressing operation of the push button switch 1, and releases the pressing. As a result, the push switch 1 is returned by the elastic return force.

In the push button switch 4 shown in FIGS. 6A, 6B and 6C, a holding frame 5b located in an opening 5a is integrally provided on an operation panel 5 through elastic tongues 5c. The engaging portion 4a is engaged with a pair of left and right lances 5d (only one is shown) projecting from the holding frame 5b and held by the holding frame 5b.

The elastic tongues 5c, 5c are shown in FIG.
As shown in (C), the push-button switch 4 is allowed to rotate toward the inside of the operation panel 5 by the pushing operation of the push-button switch 4, and the push-button switch 4 is returned by the elastic restoring force with the release of the pushing.

The push-button switch 6 shown in FIGS. 7A, 7B and 7C forms an elastic tongue 7b located in an opening 7a of the operation panel 7, and has a function of the operation panel 7 near the opening 7a. A pair of left and right holding portions 7c (only one is shown) are formed on the back surface, and the rotating shaft portions 6a, 6a are engaged with the holding portion 7c to be rotatably held by the holding portion 7c.

As shown in FIGS. 7B and 7C, the elastic tongue 7b is rotated by a pressing operation of the push button switch 6.
The rotation of the push button switch 6 toward the inside of the operation panel 7 is allowed around the axes a and 6a, and the push button switch 6 is returned by the elastic return force with the release of the press.

The push button switch 8 shown in FIGS. 8A, 8B and 8C has a positioning opening 9b formed above the opening 9a of the operation panel 9, and is formed above the positioning opening 9b. An elastic engaging piece 9c protrudes from the back surface of the operation panel 9 and the engaging tongue piece 8b having an engaging hole 8a is fixed to the positioning opening 9b.
And the operation panel 9 is held by engaging the elastic engagement piece 9c with the engagement hole 8a.

As shown in FIGS. 8B and 8C, the elastic tongue 9c allows the push button switch 8 to rotate inwardly of the operation panel 9 by the pressing operation of the push button switch 8, and releases the pressing. As a result, the push button switch 8 is returned to the elastic return force.

[0011]

In the push button switch 1 constructed as described above, a component for restoring the push button switch 1 in response to release of the press is required separately from the operation panel 2. Scores are high and costs rise,
In addition, there is a problem that not only time is required for the assembling work, but also the reliability of the fixing structure is low.

In the push button switch 4, although the number of parts is small and the assembling work is easy, not only the component molding die becomes complicated but the molding time becomes long, but also the opening 5a is formed by the holding frame 5b. There is a problem that the area becomes small, and when it is used as an illuminated push button switch, the illuminable character range becomes narrow.

Further, in the push button switch 6, the number of parts is small and the assembling work is easy as in the case of the push button switch 4, and also the simplification of the part forming die can be realized and the molding time can be shortened. However, since the fulcrum of the rotational movement of the push button switch 6 also serves as positioning, there is a problem that play is likely to occur.

Further, in the push button switch 8, since the direction of movement of the push button switch 8 in the direction of rotation and the direction of its bending are substantially parallel and the long elastic engaging piece 9c is used as the return means, Not only is it necessary to set the hardness of the tongue piece 8b and the elastic engagement piece 9c, but there is also a problem that a loss with respect to the pressing force of the push button switch 8 is likely to occur, and a heavy operation feeling is required.

In view of the above situation, the present invention not only reduces the number of parts but also facilitates the assembling work, and also achieves the effect of simplifying the part forming die and shortening the forming time. It is an object of the present invention to provide a push button switch that can be operated with a light operation feeling without sacrificing the opening area.

[0016]

Since the present invention SUMMARY OF THE INVENTION The To achieve its purpose, the opening formed in the operation panel, and Positioning aperture formed in the operation panel is located on the left and right upper portion of the opening, push button and wherein the positioning protruded from the left and right on the end of the back surface
A pair of left and right guide projections slidably supported by the opening, a leaf spring portion connecting the pair of guide projections, and projecting from substantially the center of the leaf spring portion and inserted from the front of the panel.
And a engaging projection for engaging the opening by which, as a fulcrum top of the push button causes twist the end portions of the plate spring portion with the pressing rotation of the push button lower, thereby returning the body The gist of the above is as follows.

[0017]

In such a configuration, an opening and a positioning opening adjacent to the opening are formed in the operation panel, and a pair of left and right guide projections slidably supported by the positioning opening are provided on the left and right ends of the back surface of the push button. And a pair of guide projections are connected by a leaf spring portion, and an engagement projection that engages with the opening projects from substantially the center of the leaf spring portion. The push button is twisted, and the push button is restored by the returning force of the twist.

[0018]

FIG. 1 shows an embodiment of a push button switch according to the present invention.
This will be described with reference to FIG.

In FIG. 1A, reference numeral 10 denotes a push-button switch integrally formed of an elastic material such as resin.
Reference numeral 0 denotes an operation panel.

The push button switch 10 includes a pair of left and right guide projections 1 protruding rearward from the upper portion of the back surface of the push button 11.
2, 12, a substantially horizontal leaf spring portion 13 connecting the guide projections 12, 12, an engagement projection 14 protruding rearward from a substantially center of a rear edge of the leaf spring portion 13, and a guide projection 12, 12.
And an operation protrusion 1 having a regulating piece 16 protruding rearward from the lower center of the back surface of the push button 11 and protruding downward at the tip thereof.
7 is provided.

The leaf spring 13 has a space 18 between its front edge and the back surface of the push button 11. FIG. 2A shows a portion of the leaf spring portion 13 where the engagement protrusion 14 protrudes.
As shown in (1), concave portions 19, 19 are formed so that the engaging projections are easily bent so as to sandwich the engaging projections 14.

The operation panel 20, as shown in FIG.
Three levels of surfaces 21a, 21b, 21c are formed so that the thickness increases stepwise as it goes upward. The operation panel 20 has an opening 22 extending over the front surfaces 21a and 21b.
And the positioning opening 2 adjacent to the upper right and left of the opening 22
3 and 23 are formed in a state where they are communicated with each other through communication openings 24 and 24. Further, the operation panel 20 includes an engaged projection 25 which is located at the upper center of the opening 22 and protrudes downward, and a support projection which is interposed between the opening 22 and the positioning opening 23 and protrudes upward. 26, 26 are formed. Moreover, the operation panel 20 has a tapered surface 27 formed on the surface 21c.

The upper surface 14 a of the engagement protrusion 14 is guided by the tapered surface 27 while the lower surface 25 a
Is inserted into the opening 22 so as to engage with the engaged projection 25 which forms a part of the opening 22 while being in elastic contact with the opening 22. Also,
The rotation fulcrum protrusions 15, 15 abut on the surface 21b.

Therefore, the operation panel 2 of the push button switch 10
Positioning and holding with respect to 0 are shown in FIGS.
As shown in FIG.
The left and right positioning is performed by contacting the opening side surfaces 23a, 23a with the opening side surfaces 23a, 23a, and the bottom surface 13a of the leaf spring portion 13 contacts the upper surfaces 26a, 26a of the support protrusions 26, 26 and the upper surface 14a of the engagement protrusion 14 and Lower end surface 2 of engagement projection 25
The upper and lower positioning and holding are performed by the elastic contact with 5a, and the front and rear positioning is performed by the contact of the rotation fulcrum projections 15 and 15 with the front surface 21b and the contact of the regulating piece 16 with the rear surface 21d.

On the other hand, as shown in FIG. 1B, when the push button 11 of the push button switch 10 is pressed in the direction of the arrow A from the surface, as shown in FIG.
The push button switch 10 is rotated about a contact portion of the rear surface 21b with the front surface 21b.
The operation projection 17 abuts on a not-shown operated switch while moving away from d, and the operated switch is turned on electrically.

At this time, a pressing force for rotating the push button switch 10 causes a leaf spring portion 13 as a holding portion thereof to be held.
And the end face on the side away from the push button 11 rises upward.

However, the central portion P of the leaf spring portion 13
1 is maintained in a substantially horizontal state in the same manner as during insertion because lifting is restricted by elastic contact between the upper surface 14a of the engaging projection 14 and the lower end surface 25a of the engaged projection 25.

On the other hand, the left and right ends P of the leaf spring 13
2 and P2, there is no restriction on the floating due to the space generated above the openings 22, 23 and 24 corresponding to the amount of projection of the engagement projection 14, and FIGS. 1 (C) and 2
As shown in (B), a twist occurs in which the amount of lifting increases from the regulated central portion P1 toward the end.
The recesses 19, 19 are for facilitating the twisting.

Accordingly, when the pressing of the push button 11 is released, the push button switch 10 rotates in the opposite direction to the pressing when the pressing of the push button 11 is released due to the elastic restoring force of the leaf spring portion 13 which tries to restore the twist.
The return of the push button switch 10 is completed at the same time as the rotation in the reverse direction is stopped by the contact of the regulating piece 16 with the back surface 21d.

The operation projection 17 separates from the operated switch with this return, and the operated switch is electrically turned off by the separation.

As described above, in the push button switch of the present invention, since the push button is restored by twisting the leaf spring portion, the number of parts is small and the assembling work is easy. Rather than maintaining the effect of shortening the molding time by realizing the simplification of the part molding die,
Moreover, the operation can be performed with a light operation feeling without sacrificing the opening area.

[Brief description of the drawings]

FIGS. 1A and 1B show a push button switch of the present invention, wherein FIG. 1A is an exploded perspective view of a main part viewed from the back, and FIG.
(B) is a longitudinal sectional view along the line AA of the push button switch mounted state, and (C) is a longitudinal sectional view of the push button switch rotational operation state similarly.

FIG. 2A is a rear view of a main part of a leaf spring,
(B) is a rear view of the leaf spring portion in a twisted state.

FIG. 3 is an exploded perspective view of a main part as viewed from the front.

4A is a rear view of the operation panel before the push button switch is mounted, and FIG. 4B is a rear view of the operation panel after the push button switch is mounted.

FIG. 5 shows a first example of a conventional push button switch.
(A) is an exploded perspective view of a main part viewed from the front direction, (B) is a vertical cross-sectional view of a main part in a state where the push-button switch is mounted, and (C) is a vertical cross-sectional view of a main part in a state where the push-button switch is rotated. is there.

FIG. 6 shows a second example of a conventional push button switch.
(A) is an exploded perspective view of a main part viewed from the front direction, (B) is a vertical cross-sectional view of a main part in a state where the push-button switch is mounted, and (C) is a vertical cross-sectional view of a main part in a state where the push-button switch is rotated. is there.

FIG. 7 shows a third example of a conventional push button switch.
(A) is an exploded perspective view of a main part viewed from the front direction, (B) is a vertical cross-sectional view of a main part in a state where the push-button switch is mounted, and (C) is a vertical cross-sectional view of a main part in a state where the push-button switch is rotated. is there.

FIG. 8 shows a fourth example of a conventional push button switch.
(A) is an exploded perspective view of a main part viewed from the front direction, (B) is a vertical cross-sectional view of a main part in a state where the push-button switch is mounted, and (C) is a vertical cross-sectional view of a main part in a state where the push-button switch is rotated. is there.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Push button switch 11 ... Push button 12 ... Guide protrusion 13 ... Leaf spring part 14 ... Engagement protrusion P2 ... Both ends 20 ... Operation panel 22 ... Opening 23 ... Positioning opening

Claims (1)

(57) [Scope of request for utility model registration] An opening 1. A formed on the operation panel, and Positioning <br/> opening formed on the operation panel is located on the left and right upper portion of the opening, and protrudes from the left and right on the end of the push button rear face a pair of right and left guide projections being slidably supported in said position <br/>-decided Me opening, a plate spring portion connecting said pair of guide protrusions, and protrudes substantially from the middle of the plate spring portion and the Insert from the front of the panel
An engagement projection that engages with the opening by being inserted ,
Push button switch, characterized in that as a fulcrum top of the push button causes twist the end portions of the plate spring portion with the pressing rotation of the push button lower, and so as to return the body.