JP2006269146A - Push-button switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a push-button switch mainly for turning on/off a room lamp, a hazard lamp, etc. of a vehicle with a simple structure and a low profile. <P>SOLUTION: A concave holding part 10C is formed in an operation part 10A of an operating body 10 and a mounting part 15A projected from an undersurface of the push button 15 is housed in the holding part 10C. Thereby, the dimension for the mounting part 15 A becomes unnecessary as the whole switch, and the push-button switch with the simple structure and the low profile can be obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a pushbutton switch mainly used for a turn-off operation such as a room lamp or a hazard lamp of an automobile.

  In recent years, for operation of turning off and turning on automobile room lamps, hazard lamps, etc., unlike other operation switches such as instrument panels, the operation position has a long operation stroke so that the operation position at ON / OFF can be easily understood. The use of stroke pushbutton switches is increasing.

  Such a conventional push button switch will be described with reference to FIGS.

  FIG. 7 is a partial cross-sectional view of a conventional pushbutton switch. In FIG. 7, reference numeral 1 denotes a substantially box-like case with an opening on the upper surface, and a plurality of fixed contacts 2 are implanted in the case 1. The terminal portion extends outward from the side surface of the case 1.

  An operating body 3 made of an insulating resin is housed in the case 1 so as to be movable up and down. A movable contact piece (not shown) fixed to the operating body 3 as the operating body 3 moves up and down. However, the switch contact is configured so as to be electrically connected to and separated from the fixed contact 2 in the case 1.

  Reference numeral 4 denotes a cover that covers the opening on the upper surface of the case 1, and the operation portion 3 </ b> A of the operation body 3 protrudes upward from a through hole (not shown) in the substantially center of the upper surface of the cover 4. Is provided with a front end 3B and a smaller engaging groove 3C.

  Further, reference numeral 5 denotes a push button made of insulating resin, and a mounting portion 5A having a length dimension A facing the U-shape is formed in a substantially central portion on the lower surface so as to protrude downward. 3B and the outer periphery of the engagement groove 3C are covered, and the protrusion 5B on the inner periphery of the attachment portion 5A is engaged with the engagement groove 3C so that the push button 5 is attached to the operating body 3.

  Note that a gap corresponding to a stroke L corresponding to the vertical movement of the operating body 3 is provided between the lower end of the mounting portion 5A and the upper surface of the cover 4.

  Therefore, the dimension from the upper surface of the cover 4 to the upper surface of the push button 5 is a height obtained by adding the length dimension A of the mounting portion 5A on the lower surface of the push button 5 and the thickness of the push button 5 to the gap corresponding to the stroke L.

  A coil spring (not shown) that biases the operating body 3 upward is housed in the case 1, and a locking mechanism is provided by a cam portion (not shown) or a stopper (not shown) of the operating body 3. Is formed to constitute a push button switch.

  Such a push button switch is mounted on, for example, a wiring board in a room light device attached to the ceiling of the vehicle interior, and the push button 5 is disposed so as to protrude from an opening of an operation panel (not shown) of the device. Is done.

  In the above configuration, when the push button 5 is pressed downward, the operating body 3 moves downward while bending the coil spring in the case 1, and as shown in the partial sectional view of FIG. The lower end of the mounting portion 5A of the push button 5 comes into contact with the upper surface of the cover 4, and the switch contact in the case 1 is electrically connected / separated. For example, the switch contact is turned on and the room light is turned on.

  Further, when the pressing force to the push button 5 is released from this state, the operating body 3 biased by the coil spring moves slightly upward, and the stopper in the case 1 is engaged with a predetermined portion of the cam portion of the operating body 3. The operation body 3 is locked and stopped.

  Further, after that, when the push button 5 is pressed again, the stopper and the cam portion are disengaged, the locked state is released, the operating body 3 moves upward, returns to the state of FIG. Is configured to be off and the room light is turned off.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP-A-63-72011

  However, in the above conventional push button switch, the mounting portion 5A covers the distal end portion 3B of the operating body 3 and the outer periphery of the engaging groove 3C, and the push button 5 is mounted on the operating body 3, so the height of the push button switch is While the height of the case 1 is increased by adding the thickness of the push button 5 and the stroke L in which the operating body 3 moves up and down, and the length A of the mounting portion 5A, the overall device is becoming thinner and smaller. There is a problem that it is difficult to reduce the height of the switch.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a push button switch that has a simple configuration and is reduced in height.

  In order to achieve the above object, the present invention has the following configuration.

  According to the first aspect of the present invention, a concave holding portion is formed in the operating portion of the operating body protruding from the upper surface of the case, and the mounting portion protruding from the lower surface of the push button is housed in the holding portion to operate the push button. Since the push button mounting part is housed in the holding part of the operation part, the size of the mounting part is not required for the entire switch, and the height is reduced with a simple configuration. The push button switch can be obtained.

  The invention according to claim 2 is the invention according to claim 1, wherein the push button mounting portion is press-fitted into the holding portion of the operating body, and the push button is attached to the operating body. It has an effect that it can be securely attached and can be easily assembled.

  As described above, according to the present invention, it is possible to obtain an advantageous effect that it is possible to realize a pushbutton switch with a simple configuration and a low profile.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  In addition, the same code | symbol is attached | subjected to the part of the same structure as the structure demonstrated in the term of background art, and detailed description is simplified.

(Embodiment)
FIG. 1 is a partial cross-sectional view of a pushbutton switch according to an embodiment of the present invention, FIG. 2 is an exploded cross-sectional view thereof, in which 1 is a substantially box-like case having an upper surface opening and made of an insulating resin. A plurality of fixed contacts 2 are implanted inside, and terminal portions thereof extend outward from the side surface of the case 1.

  An operation body 10 made of an insulating resin such as polyamide (PA) or polyoxymethylene (POM) is accommodated in the case 1 so as to be movable up and down. As the operation body 10 moves up and down, the operation body 10 is operated. The switch contact is configured such that the substantially V-shaped movable contact piece 12 fixed to both sides of the body 10 is electrically connected to and separated from the fixed contact 2 in the case 1.

  Reference numeral 11 denotes a cover made of a metal plate or an insulating resin that covers the opening on the upper surface of the case 1. The cover 11 is inserted through a through hole 11 </ b> A substantially at the center of the upper surface of the cover 11, and the operation portion 10 </ b> A on the operation body 10 projects upward. ing.

  Further, 13 is a coil spring made of metal wire, 14 is a substantially U-shaped stopper made of metal wire, and the coil spring 13 is mounted in a slightly bent state between the lower surface of the operating body 10 and the inner bottom surface of the case 1. The operating body 10 is biased upward, and the upper end of the stopper 14 whose lower end is held on the inner bottom surface of the case 1 is in contact with the substantially heart-shaped cam portion 10B formed on the front surface of the operating body 10, A locking mechanism is formed.

  Reference numeral 15 denotes a push button made of an insulating resin such as acrylonitrile-butadiene-styrene (ABS) having a substantially dished upper surface, and a bifurcated mounting portion 15A projecting downward is formed at the center of the lower surface. The entirety is accommodated in a concave holding portion 10C provided at the upper end of the operation portion 10A.

  As shown in the partial perspective view of FIG. 3, when the mounting portion 15A is housed in the holding portion 10C, the bifurcated mounting portion 15A is slightly elastically deformed on the inner side, and the protruding portion 15B on the lower end outer side is A push button switch is configured by elastically contacting with a depression below the concave holding portion 10C provided on both sides of the upper end of the operation portion 10A and press-fitting and engaging from above.

  As shown in FIG. 1, a gap corresponding to a stroke L that moves the operating body 10 up and down is provided between the lower surface of the push button 15 and the upper surface of the cover 11.

  That is, the entire attachment portion 15A protruding downward from the lower surface of the push button 15 is accommodated in the concave holding portion 10C at the upper end of the operation portion 10A, and the dimensions of the attachment portion 15A are included in the holding portion 10C. The dimension from the upper surface to the upper surface of the push button 15 is the height of only the gap corresponding to the stroke L and the thickness of the push button 15.

  Such a push button switch is mounted on, for example, a wiring board in a room light device mounted on the ceiling of the vehicle interior, and the push button 15 is disposed so as to protrude from an opening of an operation panel (not shown) of the device. Is done.

  In the above configuration, when the push button 15 is pressed downward, the operating body 10 moves downward while bending the coil spring 13 in the case 1, and as shown in the partial sectional view of FIG. The lower surface of the push button 15 comes into contact with the upper surface of the cover 11, and the switch contact is electrically connected / disconnected by the movable contact piece 12 and the fixed contact 2 in the case 1. For example, the switch contact is turned on and the room light is turned on. To do.

  Accordingly, the dimension from the upper surface of the cover 11 to the upper surface of the push button 15 at this time is such that there is no gap corresponding to the stroke L, and the height is only the thickness of the push button 15.

  Further, when the pressing force to the push button 15 is released from this state, the operating body 10 urged by the coil spring 13 moves slightly upward, and the stopper 14 in the case 1 is fixed to the predetermined cam portion 10B of the operating body 10. The operating body 10 is locked by being locked at the location.

  Further, after that, when the push button 15 is pressed again, the stopper 14 and the cam portion 10B are unlocked, the locked state is released, the operating body 10 moves upward, and returns to the state of FIG. The switch contact is turned off and the room light is turned off.

  As described above, according to the present embodiment, the concave holding portion 10C is formed in the operating portion 10A of the operating body 10, and the mounting portion 15A protruding from the lower surface of the push button 15 is accommodated in the holding portion 10C. As a whole switch, the size of the mounting portion 15A is not necessary, and a push button switch with a simple configuration and a low profile can be obtained.

  In addition, by pressingly engaging the mounting portion 15A of the push button 15 into the holding portion 10C of the operating body 10 and mounting the push button 15 to the operating body 10, the push button 15 can be securely mounted on the operating body 10 and Can be easily assembled by simply inserting the mounting portion 15A into the holding portion 10C.

  As shown in the partial perspective view of FIG. 5, the operating portion 20A is provided with a substantially square hole-shaped holding portion 20C in which the operating portion 10A is stored in the holding portion 10C. The present invention can also be implemented by attaching the push button and the operating body by press-fitting the attachment portion 25A having a substantially hook-like tip and having elasticity into the engagement hole 20D formed in the inner wall.

  Further, as shown in the partial perspective view of FIG. 6, a substantially spherical engagement convex portion 30D is provided at the approximate center of the adjacent concave holding portion 30C of the operation portion 30A, and is engaged with the inner surface of the mounting portion 35A. If an engagement recess 35D corresponding to the protrusion 30D is provided, the engagement recess 35D is press-fitted into the engagement protrusion 30D, and the push button and the operating body are mounted, the substantially spherical engagement protrusion Since the engaging recess 35D is rotatably engaged within a predetermined range with respect to 30D, even if the push button is pressed from an oblique direction, a load in the oblique direction is not directly applied to the operating body, Since it is difficult for twisting or the like to occur during operation, the operation can be improved.

  The push button switch according to the present invention has a simple structure and can be reduced in height, and is mainly useful for turning off a room lamp or a hazard lamp of an automobile.

The fragmentary sectional view of the pushbutton switch by one embodiment of the present invention Exploded sectional view Partial perspective view Partial sectional view during the same operation Partial perspective view according to another embodiment Partial perspective view according to another embodiment Partial sectional view of a conventional pushbutton switch Partial sectional view during the same operation

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Fixed contact 10 Operation body 10A, 20A, 30A Operation part 10B Cam part 10C, 20C, 30C Holding part 11 Cover 11A Through-hole 12 Movable contact piece 13 Coil spring 14 Stopper 15 Push button 15A, 25A, 35A Mounting part 15B Protrusion Part 20D Engagement hole 30D Engagement convex part 35D Engagement concave part

Claims (2)

A substantially box-shaped case with an opening on the top surface, an operating body housed in the case so as to be movable up and down, a switch contact that makes electrical contact and separation as the operating body moves up and down, and protrudes from the top surface of the case A pushbutton switch comprising a pushbutton mounted on the operation portion of the operation body, wherein a concave holding portion is formed in the operation portion, and an attachment portion protruding from the lower surface of the pushbutton is accommodated in the holding portion. The pushbutton switch according to claim 1, wherein the pushbutton mounting portion is press-fitted into the holding portion of the operating body.

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