JP2580390Y2 - Button switch structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a button switch structure, and more particularly to a button switch structure such as a push-lock interlock switch used for operating various devices.

[0002]

2. Description of the Related Art FIGS. 8 to 10 show the structure of a button switch attached to an operation section of various devices, which is used as a heater control switch in a vehicle or the like. In FIG. 8, a plurality of push button units 12 each showing a picture indicating each operation state are provided on the front surface of a housing 10 which is a case of the operation unit.

FIG. 9 is a sectional view taken along the line IX-IX of FIG. 8, and FIG. 10 is a view of the sliding member viewed from the back. In the drawing, a partition plate 13 is provided on the housing 10.
A sliding body 14 is slidably disposed in the opening formed by (FIG. 10), and the push button 12 is attached to the tip of the sliding body 14. An engagement protrusion 18 guided by the guide rail 16 is provided. That is, the guide rails 16 serving as guide members are provided at three positions on the left, right, and upper sides of the opening for accommodating the individual button switches, and the engagement protrusions 1 are provided.
8 are provided at three places on the left, right, and upper sides of the sliding body 14,
The engaging projection 18 slides into the groove formed by the guide rail 16.

On the inner surface of the housing 10, a frame-shaped stopper (which also functions as a rib) protruding toward the center.
On the other hand, the stopper 20 is provided on the sliding body 14.
Frame-shaped engaging projection that abuts the surface (also functions as a rib)
22 are provided. Note that the tip of the engaging projection piece 18 also comes into contact with the stopper 20 to perform a locking action.

Further, a switch section 26 having a shaft 24 is disposed on the rear end side in the opening of the housing 10, and a driving piece 28 for driving the shaft 24 is connected to the sliding member 14.
Formed in the middle part of

According to such a configuration, the push button unit 1
2, the sliding body 14 moves the housing 10 while the engaging projection 18 is guided by the guide rail 16.
Move back and forth in Then, the driving piece 28 pushes the shaft 24 in conjunction with the movement of the sliding portion 14, whereby the on / off operation of the switch portion 26 is executed. When the button switch returns from the off state, the sliding member 14 is pushed back by the urging force of the spring applied to the shaft 24 from the switch portion 26. At this time, the engagement protrusion 18 and the frame-shaped engagement Protrusion 2
2 comes into contact with the stopper 20 and is locked, whereby the push button portion 12 returns to the original position.

[0007]

However, in the structure of the button switch as described above, as shown in FIG. 11, at the time of return (at the time of collision), the engagement projection piece 18 and the frame-shaped engagement projection 22 are not connected. When the stopper 20 comes into contact with the surface,
There is a problem that a loud and high hitting sound is generated. Generally, it is considered that a clear and low sound is good as a tapping sound generated by the switch operation, but the locking operation by the surface contact described above results in a loud sound.

Therefore, conventionally, the frame-shaped engaging projection 22
The clearance between the engaging projection piece 18 and the stopper 20 (at the time of return) is increased to reduce the force applied to the surface. In this case, the hitting sound is reduced but the sound becomes muddy, and the solution is taken. As insufficient. In addition, grease may be applied to the inside of the groove of the guide rail 16 or the outer periphery of the engagement projection piece 18 to increase the sliding resistance and reduce the above-mentioned surface contact force. In this case, the amount of grease is controlled. Cumbersome and difficult. Furthermore, a cushioning material such as rubber is attached between the frame-shaped engagement protrusion 22 (and the engagement protrusion piece 18) and the stopper 20, but in this case, the number of parts increases, and the cost increases. There is a disadvantage that leads to up.

The present invention has been made in view of the above problems, and has as its object to provide a button switch capable of reducing the tapping sound upon returning to a clear and clear sound without complicated management and cost increase. It is to provide a structure.

[0010]

In order to achieve the above object, according to the present invention, there is provided a housing provided with a guide portion having a stopper and a guide groove projecting toward the center of the opening, and the housing. A sliding member which is guided by a guide engaging portion which engages with the guide portion inside the opening portion and is slidable, and which has an engaging portion which engages with the stopper when the switch returns. A tapered surface is formed on either the stopper of the housing or the engaging portion of the sliding body. When the switch returns, the tapered surface and the other corner come into contact with each other, and the engaging portion is locked by the stopper . is, the guide engaging portion moves the slide along the tapered surface, characterized in that as press even be attached to the guide portion.

Further, the invention of claim 2, claim 1
Button in the switch structure, the projection piece engaging portion of the sliding body side, which is guided by the guide portion formed on the housings side according to
And a tapered surface is formed on the projection piece .

[0012]

[Action] As described above, the field of forming a tapered surface on the distal end surface of the projecting piece is engageable portion, for example arranged above the sliding body
If the corner portion of the stopper is a line per the tapered surface of the upper Ki突 Okoshihen (line contact). Therefore, the collision area is reduced and the collision energy is dispersed. At the same time, slide the presence of the tapered surface will be slightly moved downward at the time of a collision, for example, projections of the sliding body side in a horizontal plane of the guide groove when the guide portion is provided on the housing side part Since the piece is pressed, the vibration due to the collision is easily converged, and the sound is cut off well. As a result,
The tapping sound generated at the time of return is a small and clear sound.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a cross-sectional structure of a button switch according to an embodiment. This is a cross-sectional view taken along the line II of the button switch shown in FIG. 2, and the configuration of this embodiment is the same as the conventional one. That is, as shown in FIG. 3, which is a perspective view of a state before the button switch is assembled, the housing 1
A plurality of openings 0 are formed by the partition plate 13, and after inserting the sliding body 14 from the back side into this opening, the push button 12 is attached to the step 15 at the tip of the sliding body 14 from the front side. The button switch is assembled.
In addition, guide rails 16 are provided at three places on the upper surface and both side surfaces in the opening of the housing 10, and
A stopper (also functioning as a rib) 20 is formed connected to the guide rail 16. On the other hand, the sliding body 14 is provided with engaging projections 18 that are guided by the guide grooves of the guide rails 16 on the upper portion (18A) and both side surfaces (18B), and is provided with ribs 30 as shown. .

As shown in FIG. 1, a switch section 26 having a shaft 24 at a rear end in the housing 10 is provided.
Is provided, and a driving piece 28 for driving the shaft 24 is formed at an intermediate portion of the sliding body 14.

In such a button switch, in the embodiment, the engaging projection 18 provided on the upper part of the sliding body 14 is used.
The contact surface of A with the stopper 20 is a tapered surface 100.
That is, FIG. 4 is an enlarged view of a portion E in FIG. 1, and as shown, the tapered surface 100 is formed as a surface inclined at an angle of θ from a vertical line. Therefore, the engaging projection 18
The tapered surface 100 of A comes into line contact with the corner 200 of the stopper 20, and the collision area is reduced. In addition, the energy of the collision at this time (when considered on the corner 200 side of the stopper 20) is dispersed into the forces e1 and e2 in the directions indicated by the arrows, so that the generated sound itself can be reduced.

In the embodiment, the tapered surface 100 is formed on the front side of the rib 30. As shown in FIG. 1, when the tapered surface 100 comes into contact with the stopper 20, the rib 30 comes into contact with the stopper 20. An interval t is secured between the two to prevent collision.

FIGS. 5 and 6 show the guide rail 16.
The relationship between the engagement projections 18A and 18B is shown, and the engagement projections 18 are formed in the guide grooves formed by the guide rails 16 in consideration of component accuracy and thermal contraction as shown in FIG.
A clearance a is set between the first and second walls. Therefore, the engaging projection piece 18B arranged on the side surface portion corresponds to FIG.
As shown in (A) or (B), it moves in the guide groove of the guide rail 16 on the side surface while tilting.

In the embodiment shown in FIG. 1, for example, when the push button 12 is pressed during the operation of the heater in FIG.
Is pressed, the switch section 26 is turned on. On the other hand, when the switch portion 26 is turned off by the operation release operation, the driving piece 28 is pushed back by the urging force of the spring applied to the shaft 24.

When the sliding body 14 moves to the original position, the tapered surface 100 of the engaging projection 18A of the sliding body 14 is moved to the corner 200 of the stopper 20, as shown in FIG.
To return to the original state. The hitting sound at this time becomes smaller and clearer than the case of hitting the surface due to the hitting of the line and the dispersion of the energy of the collision as shown in FIG. In addition, at the time of the collision, the inclination of the tapered surface 100 causes the sliding member 1 to move.
4 itself is moved slightly downward, and the engaging projection 18B disposed on the side surface is pressed against the horizontal plane 300 of the guide groove of the guide rail 16, as shown in FIG.
Therefore, the engagement protrusion 18B on the side surface and the guide rail 16
The contact energy also absorbs the energy of the collision, facilitates the convergence of the vibration at the time of the collision, and improves the sound cutoff.

Further, since the engaging projection 18 is firmly pressed against the horizontal plane 300 of the guide rail 16 as described above, the rattle of the button switch is eliminated, and the vibration noise generated when the vehicle vibrates can be reduced. There are advantages.

In the above embodiment, the tapered surface 100 is formed on the engaging projection 18A disposed on the upper portion of the sliding member 14. However, this tapered surface is formed on another engaging projection disposed on the side surface. An engagement portion having a tapered surface may be provided on a part of the rib 30 of the sliding member 14 instead of the guide member so as to have the same positional relationship as described above. Further, instead of the sliding body 14 side, the housing 10
The stopper 20 may be provided with a tapered surface. Considering the above embodiment, for example, the engaging projection piece (18A) disposed on the upper portion is slightly extended from the rib 30 to the front side. Instead of forming the taper surface at the portion of the stopper 20 that comes into contact with the engaging projection piece, the same effect as in the above embodiment can be obtained.

[0022]

[Effects of the Invention] As described above, according to the present invention,
A taper surface is formed on one of the stopper of the housing and the engaging portion of the sliding body, for example , a projection piece which is an engaging portion on the sliding body side arranged as a guide member, and when the switch returns, the tapered surface is formed on the other side. And the engaging portion is locked by the stopper , so that the collision area is reduced and the collision energy is dispersed. Accordingly, the tapping sound at the time of return is small and clear, and it is possible to eliminate the complicated management of grease and the increase in cost due to a cushioning material and the like.

[0023] Moreover, at the time of the line per the tapered surface and the corner portion, will be sliding body is slightly moved in the direction of the sliding direction and the vertical, for example, disposed on the side surface collision Okoshihen within guide rails horizontal plane Since the pressing is performed, the hitting sound is also reduced, and further, the rattling feeling of the button switch is improved, and there is an advantage that the vibration sound generated when the vehicle vibrates can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view (II cross section in FIG. 2) illustrating a configuration of a button switch structure according to an embodiment of the present invention.

FIG. 2 is a front view of the button switch of the embodiment.

FIG. 3 is an exploded perspective view of the button switch of the embodiment before assembling.

FIG. 4 is an enlarged view of a portion E in FIG. 1;

FIG. 5 is a diagram illustrating a relationship between a guide rail and an engagement protrusion according to the embodiment.

FIG. 6 is a diagram illustrating a state in which an engagement protrusion arranged on a side surface portion slides.

FIG. 7 is a diagram showing a state at the time of switch recovery in the embodiment.

FIG. 8 is a front view of a conventional button switch.

FIG. 9 is a sectional view taken along line IX-IX of FIG. 8;

FIG. 10 is a rear view of a conventional button switch.

FIG. 11 is a diagram showing a state of a conventional button switch when the switch is restored.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Housing 12 Push button part 14 Sliding body 16 Guide rail 18 Engagement protrusion piece 20 Stopper 22 Frame-shaped engagement protrusion 30 Rib 100 Tapered surface 200 Corner part 300 Horizontal plane

Claims (2)

(57) [Scope of request for utility model registration] 1. A housing having a guide portion having a stopper and a guide groove projecting toward the center of an opening, and a guide guided by a guide engaging portion which engages with the guide in the opening of the housing. And a sliding body formed with an engaging portion that engages with the stopper when the switch returns, wherein a tapered surface is formed on one of the stopper of the housing and the engaging portion of the sliding body. When the switch returns, the tapered surface and the other corner come into contact with each other, and the engaging portion stops.
Locked to the path, button switch structure, characterized in that the guide engaging portion moves the slide along the tapered surface has to press even be attached to the guide portion. Wherein the engaging portion of the sliding body side, which is guided by the guide portion formed on the housings side and protruding pieces, to characterized in that the formation of the Te <br/> over tapered surface on the projecting Okoshihen button switch structure of 請 Motomeko 1, wherein that.