JP2013191350A - Switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch device which is used in operation of various electronic apparatuses mainly in a motor vehicle, and ensures good and reliable operation with a simple configuration.SOLUTION: A support rib 22D projecting upward is provided on the upper surface of the support part 22B of a case 22, and a holding part 21C close to the outside of the support rib 22D is provided on the lower surface of an operation body 21. Since the outside of the support part 22B is held by the holding part 21C of the operation body 21, and the inside is supported by the shaft hole part 21B of the operation body 21, the shaft hole part 21B is less likely to be displaced and removed from the support part 22B, resulting in a switch device ensuring good and reliable operation.

Description

  The present invention relates to a switch device used mainly for operating various electronic devices in an automobile.

  In recent years, a so-called steering switch is installed in the vicinity of a steering wheel in an automobile, and this switch is operated with a finger while holding a handle to operate an electronic device such as an audio device or an air conditioner. Is required and the switch operation is reliable.

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

  FIG. 5 is a cross-sectional view of a conventional switch device, and FIG. 6 is an exploded perspective view thereof. In FIG. 5, 1 is an operation body made of an insulating resin having a substantially cylindrical operation portion 1A formed thereon, and 2 is an approximate view. In a box-shaped case, a pair of shaft hole portions 1B project from the lower surface so as to face the vicinity of the inside of the outer periphery of the operation portion 1A, and the pair of shaft hole portions 1B are disposed to face the lower case 2 The operating body 1 is swingably held by the case 2 by being pivotally supported by a shaft support portion 2B protruding inward of the support portion 2A.

  Reference numeral 3 denotes a wiring board having a plurality of wiring patterns (not shown) formed on the upper and lower surfaces, and a plurality of switch contacts 4 such as push switches are mounted on the upper surface.

  Reference numeral 5 denotes a pressing body, which is inserted through guide holes 2C provided in the direction orthogonal to the two support portions 2A of the case 2 so as to be movable up and down, and has an upper end extending downward from the lower surface of the operating body 1. The lower end of the pressed part 1C is in contact with the button part of the switch contact 4.

  Further, reference numeral 6 denotes a cover having an opening 6A formed on the upper surface. The operation unit 1A of the operating body 1 protrudes upward from the opening 6A, and is fixed to the case 2 with screws (not shown) or the like. 10 is configured.

  As shown in the plan view of the steering shown in FIG. 4, the switch device 10 configured as described above is a pad that incorporates a steering wheel 11 and a central airbag, etc., with the operation portion 1A of the operation body 1 facing forward. 11A, for example, attached to the right-side spoke 11B and attached to the automobile, and the switch contact 4 and the like are connected to a vehicle electronic circuit (not shown) via a connector or a lead wire (not shown). Is electrically connected.

  In the above configuration, when the thumb is extended while grasping the steering wheel 11 and the front “∧” display portion or the rear “∨” display portion of the operation portion 1A is pressed, the operation body 1 moves back and forth around the shaft support portion 2B. The pressing portion 1C presses the lower switch contacts 4 facing each other via the pressing body 5 to electrically connect and disconnect the switch contacts 4, and in response to this, the electronic circuit of the vehicle For example, the volume of the audio device can be increased or decreased.

  Here, as shown in FIG. 4, the operation unit 1 </ b> A of the switch device 10 operates the switch device that is mounted on the left-side spoke 11 </ b> B of the steering wheel 11 and can swing in, for example, four directions. Similar to the section 12, the outer shape is a substantially large circular shape so that it can be easily operated.

  Therefore, when the center right end or the center left end of the operation portion 1A is accidentally pressed, the pressing force is concentrated on one shaft hole portion 1B and the shaft hole portion 1B or the shaft support portion 2B is elastically deformed, so that the shaft hole When the portion 1B is displaced inward from the shaft support portion 2B and once removed, and the pressing force is removed, the shaft hole portion 1B is returned to the original position so that it is supported by the shaft support portion 2B by the elasticity of the synthetic resin. Abnormal noise was likely to occur between the hole 1B and the support 2A.

  That is, normally, in such a switch device for swing operation, the distance between the shaft hole portions of the operation portion and the shaft support portion of the case, that is, the interval between the swing support points is relatively narrow, and the length in the operation position direction is long. In the case of a substantially rectangular or substantially circular operating portion, it is difficult to accidentally press the vicinity of the swing fulcrum, and even if the vicinity of the swing fulcrum is pressed, the pressing force is distributed to the fulcrums on both sides. In contrast, it is difficult to concentrate on one side, but when operating the relatively wide and substantially circular operation portion 1A with the thumb, the vicinity of one fulcrum of the swing fulcrum is easily pressed with a large force. The operating body 1 may be detached from the support portion 2A of the case 2 and an abnormal noise is likely to be generated, which may hinder the swinging operation.

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

JP 2011-129339 A

  In the above-described conventional switch device 10, when the vicinity of the swing fulcrum of the substantially circular operation portion 1 </ b> A is accidentally pressed with a relatively large force during the swing operation, the shaft hole portion 1 </ b> B of the operating body 1 is located inside. There has been a problem that the swinging operation may be hindered, for example, an abnormal noise may be generated due to slippage and removal from the shaft support portion 2B of the case 2.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a switch device capable of reliable and good operation with a simple configuration.

  In order to achieve the above object, according to the present invention, a support rib protruding upward is provided on the upper surface of the support portion of the case, and a holding portion adjacent to the outside of the support rib is provided on the lower surface of the operation body, Thus, the switch device is configured such that the inner sides are respectively held by the shaft hole portions.

  According to the present invention, the support portion of the case is held on the outside by the holding portion of the operation body with the support rib interposed therebetween, and the upper operation portion is compared by holding the inside on the shaft hole portion of the operation body. Even if it is pressed with an excessively large force, the shaft hole portion is difficult to be displaced with respect to the shaft support portion of the support portion.Therefore, there is an advantageous effect that a switch device capable of reliable and good operation can be realized with a simple configuration. can get.

Sectional drawing of the switch apparatus by one embodiment of this invention Exploded perspective view Perspective view of the main part of the operating body Steering plan view Sectional view of a conventional switch device Exploded perspective view

  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 structure same as the structure demonstrated in the term of background art, and detailed description is simplified.

(Embodiment)
FIG. 1 is a cross-sectional view of a switch device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, in which 21 is a polycarbonate or acrylonitrile butadiene having a substantially cylindrical operation portion 21A formed thereon. An operation body made of an insulating resin such as a styrene copolymer, as shown in a perspective view of a main part in a bottom view of the operation body 21 in FIG. A shaft hole portion 21B that is flat and has a through hole formed in the center protrudes downward from the lower surface, and has a substantially wall shape between the inner wall surface of the operating body 21 with a predetermined space outside the shaft hole portion 21B. A holding portion 21C is formed.

  Reference numeral 22 denotes a substantially box-shaped case made of an insulating resin such as polyoxymethylene or polybutylene terephthalate, which is opposed to the shaft hole 21B of the operating body 21 in a substantially circular recess 22A, and is a pair of top views. A U-shaped and substantially wall-shaped support portion 22B is erected.

  Further, a substantially cylindrical shaft support portion 22C protrudes inwardly of each support portion 22B, and a substantially semicircular plate-like support rib 22D protrudes upward adjacent to the shaft support portion 22C, so that a shaft hole portion is formed. 21B is pivotally supported by the shaft support portion 22C, and the holding portion 21C of the operating body 21 is close to the outside of the support rib 22D, and the operating body 21 is swingably held by the support portion 22B of the case 22.

  In this manner, the shaft hole 21B of the operating body 21 is pivotally supported by the shaft support 22C inside the support 22B, the inner side is the shaft hole 21B and the outside is the holding part across the support rib 22D above the support 22B. 21C, even if a relatively large force is applied to the operation portion 21A above the shaft hole portion 21B and the shaft support portion 22C and the shaft hole portion 21B are somewhat elastically deformed, the shaft hole portion is supported with respect to the shaft support portion 22C. The shaft 21B is securely supported so that it is difficult to come off and shift.

  Reference numeral 3 denotes a wiring board made of an insulating resin such as paper phenol or glass epoxy having a plurality of wiring patterns (not shown) formed on the upper and lower surfaces, and a plurality of switch contacts 4 such as push switches are mounted on the upper surface. Has been.

  Reference numeral 5 denotes a pressing body, which is inserted through a pair of guide holes 22E provided to face each other in a direction orthogonal to both support portions 22B of the case 22 so as to be movable up and down, and the upper end is downward from the lower surface of the operating body 21. The lower end is in contact with the button portion of the switch contact 4 on the pressing portion 21 </ b> D extending to the side.

  Further, reference numeral 6 denotes a cover having an opening 6A formed on the upper surface, and an operating portion 21A of the operating body 21 protrudes upward from the opening 6A and is fixed to the case 22 with a screw (not shown) or the like. 30 is configured.

  As shown in the plan view of the steering in FIG. 4, the switch device 30 configured in this way has a pad that incorporates the steering wheel 11, the central airbag, etc. with the operation portion 21 </ b> A of the operation body 21 facing forward. 11A, for example, attached to the right-side spoke 11B and attached to the automobile, and the switch contact 4 and the like are connected to a vehicle electronic circuit (not shown) via a connector or a lead wire (not shown). Is electrically connected.

  In the above configuration, when the thumb is extended while grasping the steering wheel 11 and the rear “∧” display portion or the front “∨” display portion is pressed, the operation body 21 moves back and forth around the shaft support portion 22C. And the pressing part 21D presses the lower switch contacts 4 facing each other through the pressing body 5 to electrically connect and disconnect the switch contacts 4, and in response to this, the electronic circuit of the vehicle For example, the volume of the audio device increases or decreases.

  At this time, for example, if the center right end of the operation portion 21A is accidentally pressed with the thumb, the shaft hole portion 21B on the right side of the operation body 21 and the support portion 22B of the case 22 are slightly elastically deformed inward or outward. Since the holding portion 21C is close to the outside of the support rib 22D and the shaft hole portion 21B is close to the inside and the support portion 22B is held by the shaft hole portion 21B and the holding portion 21C, the shaft support portion of the support portion 22B The shaft hole 21 </ b> B is unlikely to come off from 22 </ b> C, and the operating body 21 is securely held by the case 22 so as to be swingable.

  As described above, according to the present embodiment, the support rib 22D protruding upward is provided on the upper surface of the support portion 22B of the case 22, and the holding portion 21C close to the outside of the support rib 22D is provided on the lower surface of the operation body 21, By holding the outer side of the support portion 22B of the support portion 22B of the case 22 with the holding portion 21C of the operating body 21 and the inner side with the shaft hole portion 21B of the operating body 21, the upper operating portion 21A can be pivoted. Even if the vicinity is pressed with a relatively large force, the shaft hole 21B is difficult to be displaced and disengaged from the support 22B, so that a switch device capable of reliable and good operation can be realized.

  The switch contact 4 has been described as a configuration using a single push switch. However, a fixed contact is formed on the upper surface of the wiring board 3 with carbon or the like, and a movable contact made of a conductive metal thin plate is mounted above the fixed contact. Various switch contacts may be used, such as a mounted one, or a substantially dome-shaped flexible rubber contact having a movable contact formed on the lower surface.

  The switch device according to the present invention can have a simple configuration and can be reliably and favorably operated, and is useful mainly for operation of various electronic devices of automobiles.

DESCRIPTION OF SYMBOLS 3 Wiring board 4 Switch contact 5 Press body 6 Cover 6A Opening part 11 Steering wheel 11A Pad 11B Spoke 21 Operation body 21A Operation part 21B Shaft hole part 21C Holding part 21D Press part 22 Case 22A Depression part 22B Support part 22C Support part 22D Support Rib 22E Guide hole 30 Switch device

Claims (1)

An operating body having a substantially circular shape with a pair of shaft hole portions extending on the lower surface and a support portion formed inwardly and projecting inwardly to support the shaft hole portion are provided. The case includes a case for holding the operating body so as to be swingable, and a switch contact that is electrically connected to and separated from the operating body when the operating body is swung, and a support rib protruding upward is provided on the upper surface of the support portion of the case In addition, a switch device is provided in which a holding portion close to the outside of the support rib is provided on the lower surface of the operating body, and the outside of the support portion is held by the holding portion and the inside is held by the shaft hole portion.

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