JP5135934B2 - Vehicle switch - Google Patents

Description

  The present invention relates to a vehicular switch used mainly for operation of 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 it is widely used to operate an electronic device such as an audio device or an air conditioner by operating this switch with a finger while holding a handle. There is a need for a device that is easy to operate.

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

  7 is a cross-sectional view of a conventional vehicle switch, and FIG. 8 is an exploded perspective view. In FIG. 7, 1 is a substantially box-shaped case made of insulating resin, 2 is an operating body made of insulating resin, and case 1 A plurality of opening holes 1A are formed on the upper surface, and a plurality of operating bodies 2 are mounted in the opening holes 1A so as to be movable up and down.

  Reference numeral 3 denotes a wiring board having a plurality of wiring patterns (not shown) formed on the upper and lower surfaces. A plurality of switch contacts 4 such as push switches are mounted on the upper surface of the wiring board and protruded from the upper surface of the switch contact 4. The lower surface of the operating body 2 is in contact with the push button.

  Reference numeral 5 denotes a cover made of an insulating resin. The upper surface is provided with a plurality of holding bosses 5A projecting upward in a substantially cylindrical shape, and the lower surface is provided with a plurality of mounting bosses 5B projecting downward in a substantially cylindrical shape. Yes.

  Further, the upper surface of the holding boss 5A on the upper surface of the cover 5 abuts on the holding projection 1B which protrudes downward in a substantially cylindrical shape on the lower surface of the case 1, and a plurality of screws 6 inserted through the holding boss 5A are fastened to the holding projection 1B. The vehicle switch 10 is configured such that the cover 5 covers the opening on the lower surface of the case 1 in which the operating body 2, the switch contact 4, and the wiring board 3 are accommodated.

  And, as shown in the front view of FIG. 6, the vehicular switch 10 configured as described above is located between the steering wheel 7 and a pad 7 </ b> A containing a central air bag and the like with the upper surface of the case 1 facing forward. Attached to the left and right spokes 7B and attached to the automobile, a plurality of switch contacts 4 are electrically connected to an electronic circuit (not shown) of the vehicle via a connector, a lead wire (not shown) or the like. The

  Further, as shown in the cross-sectional view of FIG. 9, the metal mounting plate 8 of the spoke 7B abuts the mounting boss 5B on the lower surface of the cover 5, and the screws 6 inserted through the mounting plate 8 include a plurality of mounting bosses 5B. The vehicle switch 10 is fixed to the steering wheel 7.

  In the above configuration, when the thumb is extended while holding the steering wheel 7 and the operating body 2 is pressed, the switch contact 4 on the back surface is electrically connected and separated, and the electronic circuit of the vehicle is applied to the automobile accordingly. Various mounted devices are controlled, and for example, the volume of the audio device and the temperature of the air conditioner are increased or decreased.

  That is, the vehicle switch 10 is attached to the steering wheel 7 and, for example, only the thumb is extended without operating the steering wheel 7, and any one of the plurality of operating bodies 2 is operated to control the devices in the vehicle. In particular, the apparatus is configured so that it can be operated easily during operation.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2006-324080 A

  However, in the above conventional vehicle switch, the case 1 and the cover 5 are fixed by the holding projection 1B and the holding boss 5A, and the cover 5 is fixed to the mounting plate 8 by the mounting boss 5B. However, there was a problem that the case 1 was broken.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a vehicle switch that prevents breakage of the case and is easy to operate.

In order to achieve the above object, the present invention provides a holding projection penetrating the wiring board on the lower surface of the case, and is fixed to the holding projection on the upper surface of the cover and abuts on the lower surface of the wiring substrate at a fixing step between the holding projection. A holding boss that holds the wiring board at a step with the outer periphery of the holding protrusion is provided and a thin switch is formed at the base of the holding boss to constitute a vehicle switch, and when an impact is applied to the upper surface of the case, When the thin portion of the cover is broken, the impact on the case is alleviated, the case is prevented from being broken, and a vehicle switch that can be easily operated can be obtained.

  As described above, according to the present invention, it is possible to obtain an advantageous effect that it is possible to realize a vehicle switch that is easy to operate and prevents breakage of the case.

  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 vehicle switch according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, in which 1 is a substantially box-like case made of an insulating resin such as ABS or polyacetal, 2 Is an operation body made of an insulating resin such as polycarbonate, acrylic, ABS, etc. A plurality of opening holes 1A are formed on the upper surface of the case 1, and a plurality of operation bodies 2 are mounted in the opening holes 1A so as to be movable up and down. ing.

  Reference numeral 3 denotes a wiring board such as paper phenol or glass-filled epoxy. A plurality of wiring patterns (not shown) are formed on the upper and lower surfaces by copper foil or the like, and a plurality of switches such as push switches are formed on the upper surface. The contact 4 is mounted, and the lower surface of the operation body 2 is in contact with the push button protruding from the upper surface of the switch contact 4.

  Reference numeral 15 denotes a cover made of an insulating resin. The upper surface is provided with a plurality of holding bosses 15A protruding upward in a substantially cylindrical shape, and the lower surface is provided with a plurality of mounting bosses 15B protruding substantially downward in a cylindrical shape. A thin-walled portion 15C that is recessed in a groove shape is formed at the base of the holding boss 15A on the upper surface of the cover 15, and a thin-walled portion 15D that is also recessed in a groove shape is formed at the base of the mounting boss 15B.

  Further, the upper surface of the holding boss 15A on the upper surface of the cover 15 abuts on the holding projection 1B that protrudes downward in a substantially cylindrical shape on the lower surface of the case 1, and a plurality of screws 6 inserted through the holding boss 15A are fastened to the holding projection 1B. Thus, the cover 15 covers the opening of the lower surface of the case 1 in which the operating body 2, the switch contact 4, and the wiring board 3 are housed, so that the vehicle switch 20 is configured.

  And, as shown in the front view of FIG. 6, the vehicular switch 20 configured as described above is located between the steering wheel 7 and a pad 7 </ b> A containing a central air bag or the like with the upper surface of the case 1 facing forward. Attached to the left and right spokes 7B and attached to the automobile, a plurality of switch contacts 4 are electrically connected to an electronic circuit (not shown) of the vehicle via a connector, a lead wire (not shown) or the like. The

  Further, as shown in the cross-sectional view of FIG. 3, the metal mounting plate 8 of the spoke 7B abuts the mounting boss 15B on the lower surface of the cover 15, and the screws 6 inserted through the mounting plate 8 include a plurality of mounting bosses 15B. The vehicle switch 20 is fixed to the steering wheel 7.

  In the above configuration, when the thumb is extended while holding the steering wheel 7 and the operating body 2 is pressed, the switch contact 4 on the back surface is electrically connected and separated, and the electronic circuit of the vehicle is applied to the automobile accordingly. Various mounted devices are controlled, and for example, the volume of the audio device and the temperature of the air conditioner are increased or decreased.

  That is, the vehicle switch 20 is mounted on the steering wheel 7 and, for example, only the thumb is extended without operating the steering wheel 7 and any one of the plurality of operation bodies 2 is operated to control the devices in the vehicle. In particular, the apparatus can be easily operated during operation.

  In addition, when an impact is applied to the upper surface of the case 1, as shown in FIG. 1, the base of the holding boss 15A on the upper surface of the cover 15 fixed to the holding protrusion 1B on the lower surface of the case 1 is recessed in a groove shape. Since the thin wall portion 15C is formed, and the thin wall portion 15C at the base of the holding boss 15A is thinner than the thickness of the upper surface of the case 1, as shown in the cross-sectional view of FIG. 15C is broken, and the case 1 containing the operation body 2, the switch contact 4, and the wiring board 3 moves downward.

  Alternatively, as shown in FIG. 3, a thin-walled portion 15D that is recessed in a groove shape is formed at the base of the mounting boss 15B on the upper surface of the cover 15 that is in contact with and fixed to the mounting plate 8, and the thin-walled portion of the base of the mounting boss 15B is formed. Since the portion 15D is also thin, as shown in the cross-sectional view of FIG. 5, the thin portion 15D of the cover 15 is broken by an impact, and the operation body 2, the switch contact 4, and the wiring board 3 are accommodated. 1 moves downward.

  That is, when an impact is applied to the upper surface of the case 1, one or both of the thin portions 15 </ b> C and 15 </ b> D on the upper surface of the cover 15 are broken and the case 1 moves downward, so that the impact on the case 1 is reduced. The case 1 is configured to be relaxed so that the case 1 is not broken.

  In the above description, the structure in which the thin-walled portions 15C and 15D that are recessed in the groove shape are formed on both the holding boss 15A root and the mounting boss 15B root on the upper surface of the cover 15 is described. However, the same effect can be obtained.

  Further, the configuration in which the thin wall portions 15C and 15D are formed on the holding boss 15A root and the mounting boss 15B root on the upper surface of the cover 15 has been described. However, even if a thin wall portion recessed in a groove shape is provided on each boss root on the lower surface of the cover 15. Implementation of the present invention is possible.

As described above, according to the present embodiment, the holding protrusion 1B penetrating the wiring board 3 is provided on the lower surface of the case 1, and the upper surface of the cover 15 is fixed to the holding protrusion 1B by the step 15E at the fixing position of the holding protrusion 1B. A holding boss 15A that contacts the lower surface of the wiring board 3 and holds the wiring board 3 at a step 15E along with the outer periphery of the holding projection 1B is provided, and a thin portion 15C is formed at the base of the holding boss 15A, thereby forming the upper surface of the case 1 When an impact is applied, the thin-walled portion 15C of the cover 15 is broken and the impact on the case 1 is mitigated, so that the case 1 can be prevented from being broken and an easy-to-operate vehicle switch can be obtained. is there.

  In the above description, a configuration using a single push switch as the switch contact 4 has been described. However, a fixed contact is formed on the upper surface of the wiring board 3 with carbon or the like, and a substantially dome-shaped conductive metal thin plate is formed above this. It is possible to implement the present invention using various switch contacts, such as those having a movable contact mounted thereon, or using a substantially dome-shaped flexible rubber contact having a movable contact formed on the lower surface. It is.

  The vehicle switch according to the present invention can prevent the case from being broken and can be easily operated, and is useful mainly for controlling various electronic devices of automobiles.

Sectional drawing of the switch for vehicles by one embodiment of this invention Exploded perspective view Sectional view when the vehicle is installed Sectional view when the same thin-walled portion is broken Sectional view when the same thin-walled portion is broken Front view of steering wheel Sectional view of a conventional vehicle switch Exploded perspective view Sectional view when the vehicle is installed

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 1A Opening hole 1B Holding protrusion 2 Operation body 3 Wiring board 4 Switch contact 6 Screw 7 Steering wheel 7A Pad 7B Spoke 8 Mounting plate 15 Cover 15A Holding boss 15B Mounting boss 15C, 15D Thin part
15E Step 20 Vehicle switch

Claims (1)

A substantially box-shaped case having a plurality of opening holes formed on the upper surface, an operating body mounted in the opening hole of the case so as to be movable up and down, and an electrical connection made by operating the operating body housed in the case. A switch contact for separating, a wiring board on which the switch contact is disposed on the upper surface, and a cover for covering the lower surface opening of the case, and a holding projection penetrating the wiring board is provided on the lower surface of the case, On the upper surface of the cover, a holding boss is provided that is fixed to the holding protrusion and is in contact with the lower surface of the wiring board at a fixing step between the holding protrusion and holds the wiring board at the step together with the outer periphery of the holding protrusion. A switch for a vehicle in which a thin portion is formed at the base of the holding boss.

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