JP2005228574A - Push button switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a push button switch capable of preventing a play of a slider in a projected condition without needing so much the dimensional accuracy of the clearance of a protruding part and a rail for guide. <P>SOLUTION: This push button switch having the slider 1 displaceable between a protruding condition and a sinking condition by a pressing operation, a button 3 engaged with an upper part of the slider 1, a switch case 2, a rail 2a for guide formed in the switch case 2 and the protruding part 1a formed in the slider 1, and turning on/off a prescribed electrical component by the pressing operation to the slider 3, is provided with a rail side top 2aa in a horn shape formed in an upper end face of the rail 2a for guide and a protruding part side top 1aa in a horn shape formed in an upper end face of the protruding part 1a. When the slider 1 in the projected condition, the horn shape of the protruding part side top 1aa is pressure-contacted on the horn shape of the rail side top 2aa. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a push button switch that turns on or off a predetermined electrical component by a pressing operation on a slider.

  Generally, a push button switch applied to a panel switch or the like of an automobile has a slider that can be displaced between a protruding state and an immersive state with respect to the panel by a pressing operation. That is, the slider is housed in a predetermined switch case so as to be displaceable, and a tact switch, for example, is disposed on the base end side thereof, and is brought into a protruding state by the elasticity of an elastic member provided in the tact switch. Always biased in the direction.

  Then, when the operator presses the slider, it is displaced to the immersive state against elasticity and the tact switch is turned on to selectively turn on or off predetermined electrical components provided in the vehicle. Yes. Here, conventionally, a convex protrusion is formed on the side surface of the slider, and a guide rail for sliding the protrusion while guiding the protrusion is formed on the switch case side to guide the displacement of the slider. It was. In addition, since this prior art does not relate to the literature known invention, there is no prior art document information to be described.

  However, in the above conventional push button type switch, a minute clearance is set between the protrusion and the guide rail in order to make the displacement of the slider satisfactorily. However, there is a problem that looseness occurs due to the clearance when the switch protrudes from the switch case. Such a problem is considered to be solved if the clearance can be set so that the sliding property at the time of displacement can be maintained satisfactorily while suppressing the backlash of the slider in the protruding state, but depending on the temperature environment to be used, Since it is conceivable that the dimensions of the rail may change, it is difficult to form the protrusion and the guide rail in such an ideal clearance because of the dimensional accuracy.

  The present invention has been made in view of such circumstances and does not require much dimensional accuracy of the clearance between the protrusion and the guide rail, and can prevent the slider from rattling in the protruding state. It is to provide a button type switch.

  According to the first aspect of the present invention, there is provided a slider that is displaceable between a protruding state and an immersive state by a pressing operation, and that is urged in a direction that is always in a protruding state; A case, a guide rail formed in the switch case and extending in a displacement direction of the slider, and formed in the slider, and slides in the guide rail to guide the slider when it is displaced. A push-button switch that turns on or off a predetermined electrical component by a pressing operation on the slider, and a rectangular rail-side top formed on an end surface of the guide rail; and A protrusion-side top formed on the end surface and having a shape that can match the angular shape of the rail-side top, and when the slider is in a protruding state, the rail side Angular shape of the projection-side top in the corner shape of the parts is characterized in that it is pressed.

  According to a second aspect of the present invention, in the push button type switch according to the first aspect, the square shape of the rail side top and the protrusion side top is formed substantially at the center of the guide rail and the protrusion, and is approximately 90. It is formed at an angle of degrees.

  According to the first aspect of the present invention, the rail-side top and the projection-side top that can be matched are formed on the end surfaces of the guide rail and the projection, and when the slider is in the protruding state, Since the angular shape of the top portion on the protrusion side is pressed against the rectangular shape, it is possible to prevent the backlash of the slider in the protruding state without requiring much dimensional accuracy of the clearance between the protruding portion and the guide rail.

  According to the invention of claim 2, since the square shape of the rail-side top portion and the protrusion-side top portion is formed at substantially the center of the guide rail and the protrusion and is formed at an angle of approximately 90 degrees, Therefore, it is easy to manufacture a mold and the like, and the moldability of the guide rail and the protrusion can be improved.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The push button switch according to the present embodiment is composed of, for example, a panel switch formed on a dashboard of an automobile, etc., and is capable of switching on / off of electrical components included in the vehicle by a pressing operation. As shown in FIG. 1, all are mainly composed of a slider 1, a switch case 2 and a button 3 made of a resin molded product.

  The slider 1 can be displaced in the vertical direction in the figure by an operator's pressing operation, and as shown in FIG. 2, a protrusion 1a of a ridge extending in the displacement direction is extended on the side surface thereof. It is. As shown in the enlarged view in the figure, the upper end surface of the protrusion 1a is formed with a protrusion-side top 1aa having a convex convex shape, and the protrusion-side top 1aa has a rectangular shape. It is formed at substantially the center of the portion 1a and its angle is approximately 90 degrees (right angle). The button 3 is provided with a design, and is engaged with the upper portion of the slider 1 so as to be pressed by the operator.

  The switch case 2 accommodates the slider 1 so as to be displaceable in the vertical direction, and is configured to be attached to a predetermined position of the vehicle via a bracket portion B (see FIG. 1). As shown in FIG. 3, the switch case 2 is formed with an accommodation hole 2b for accommodating the slider 1, and the protrusion 1a of the slider 1 assembled on the inner peripheral wall surface of the accommodation hole 2b. The guide rail 2a for sliding the is formed. The guide rail 2a and the protrusion 1a function as a guide when the slider 1 is displaced in the vertical direction.

  The upper end surface of the guide rail 2a is formed with a rail-side top 2aa having a shape that can match the square shape of the protrusion-side top 1aa of the protrusion 1a, as shown in the enlarged view in FIG. The angular shape of the side top 2aa is formed at the approximate center of the guide rail 2a, and the angle is approximately 90 degrees (right angle). When the slider 1 is in a projecting state with respect to the switch case 2, the angular shape of the projection-side top portion 1aa is brought into contact with the square shape of the rail-side top portion 2aa.

  The push button switch according to the present embodiment is assembled by inserting the slider 1 from below the accommodation hole 2 b of the switch case 2 and then engaging the button 3 from above the slider 1. In the assembled state, a tact switch (not shown) is disposed below the slider 1, and the protruding state of the slider 1 (see FIG. 4) is maintained by the elasticity of the elastic member provided in the tact switch. In this way, when the slider 1 is in the projecting state, the tact switch is turned off, and the predetermined electrical component provided in the vehicle is turned off.

  Then, when the upper surface of the button 3 is pressed, the slider 1 is displaced downward against the elasticity of the tact switch, and is brought into an immersive state shown in FIG. Since the slider slides downward along the rail 2a, the displacement of the slider 1 is guided. As shown in FIG. 4, the protruding state of the slider 1 here means a state in which the slider 1 protrudes from the upper surface of the switch case 2 by the dimension t1 and can be pressed. As shown in FIG. 5, the slider 1 protrudes from the upper surface of the switch case 2 by a dimension t2 and cannot be lowered further.

  However, when the slider 1 reaches the lower end, the tact switch disposed at the lower portion is turned on, and predetermined electrical components included in the vehicle are turned on. When the slider 1 (that is, the button 3) in the immersive state is released, the slider 1 is displaced upward by the elasticity of the tact switch and returns to the protruding state.

  Here, since the slider 1 is biased upward when the slider 1 is in the projecting state, as shown in FIG. 6, the angular shape of the projecting portion side top portion 1 aa in the projecting portion 1 a is the corner of the rail side top portion 2 aa. Since it is pressed against the shape and the movement of the protrusion 1a in the left-right direction is restricted, the backlash of the slider 1 in the same direction is prevented. In other words, a clearance CL for allowing the protrusion 1a to slide is formed between the protrusion 1a and the guide rail 2a. In this case, the presence of the contact point P between the angular shape of the rail-side apex 2aa and the angular shape of the projecting-side apex 1aa prevents the play based on the clearance CL from occurring.

  According to the push button type switch of the present embodiment, the square rail-side top 2aa and the projection-side top 1aa that can be matched are formed on the upper end surfaces of the guide rail 2a and the projection 1a, respectively, and the slider 1 Is in the protruding state, the square shape of the protrusion side top portion 1aa is pressed against the square shape of the rail side top portion 2aa, so that the dimensional accuracy of the clearance CL between the protrusion 1a and the guide rail 2a is not so required. The backlash of the slider 1 when in the protruding state can be prevented.

  Furthermore, the square shape of the rail side top 2aa and the projection side top 1aa is formed at the approximate center of the guide rail 2a and the projection 1a and at an angle of about 90 degrees. It is easy to get the accuracy of the mold.

  Although the present embodiment has been described above, the present invention is not limited to this. For example, the slider is biased by another elastic member instead of being biased by the elasticity of the tact switch. It is good. In addition, each of the square shapes of the rail side top portion and the protrusion side top portion in the present embodiment is formed at substantially the center of each and has an angle of approximately 90 degrees, but each corner shape is at a position offset from the center. Alternatively, a square shape may be formed at an angle different from 90 degrees. Furthermore, in this embodiment, the present invention is applied to a panel switch of an automobile, but is not limited to this, and may be applied to other vehicles, and further, a push button disposed other than the vehicle. It may be applied to a switch.

  If the slider is in the protruding state, the push button type switch that presses the square shape of the projection side top to the square shape of the rail side top will also have a different appearance or other functions added. Can be applied.

The top view which shows the pushbutton type switch which concerns on embodiment of this invention The perspective view which shows the slider in the same pushbutton type switch Sectional view taken along the line III-III in FIG. 1 (state before attaching the slider and button) Schematic diagram showing the state where the slider shown in FIG. 3 is assembled to the switch case (protruding state) Schematic diagram showing the state where the slider shown in FIG. 3 is assembled to the switch case (immersion state) The schematic diagram which shows the state in which the square shape of the guide rail and the square shape of a protrusion are press-contacted in the same pushbutton switch

Explanation of symbols

1 Slider 1a Projection 1aa Projection Side Top 2 Switch Case 2a Guide Rail 2aa Rail Side Top 3 Button

Claims (2)

A slider that is displaceable between a protruding state and an immersive state by a pressing operation, and is always biased in a direction that is in a protruding state;
A switch case for accommodating the slider in a displaceable manner;
A guide rail formed on the switch case and extending in a displacement direction of the slider;
A protrusion that is formed on the slider and that slides within the guide rail to guide the slider when it is displaced;
In a push button type switch that turns on or off a predetermined electrical component by a pressing operation on the slider,
An angular rail side top formed on the end face of the guide rail;
Formed on the end surface of the protrusion, and the protrusion-side top having a shape that can match the angular shape of the rail-side top;
The push button switch is characterized in that when the slider is in a projecting state, the angular shape of the protrusion side apex is pressed against the angular shape of the rail side apex.   2. The push button according to claim 1, wherein the rail-side top portion and the projection-side top portion are formed at substantially the center of the guide rail and the protrusion and at an angle of approximately 90 degrees. Type switch.

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