JP2011150871A - Composite operation switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite operation switch which is easily manufactured and with assured operation regarding the composite operation switch used mainly for operation of various electronic equipment in a vehicle. <P>SOLUTION: Flux 9 is prevented from flowing out from the switch 6 and flowing into fixed contacts 5 by frame sections 15 and 16 when the switch 6 is soldered to a wiring substrate 14 by forming the surrounding frame sections 15 and 16 on outer peripheries of the fixed contacts 5 and the switch 6 on a top surface of the wiring substrate 14 and attachment of the flux 9 to the top surface of the fixed contacts 5 can be prevented. Thus, manufacturing can be easily carried out without time and effort as well as obtaining the composite operation switch with assured contact between a movable contact piece 7 and the fixed contacts 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a composite operation switch mainly used for operation of various electronic devices in an automobile.

  In recent years, various switches have been installed near the front panel of the vehicle interior and the steering wheel to operate various electronic devices such as audio and air conditioners in the vehicle interior. It has been demanded.

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

  FIG. 5 is a cross-sectional view of a conventional composite operation switch, and FIG. 6 is an exploded perspective view thereof. In FIG. 5, 1 is an insulating resin case, 2 is a substantially cylindrical operating body made of insulating resin, 2 is rotatably housed and mounted in the case 1, and the upper portion of the operation body 2 protrudes from the opening on the upper surface of the case 1.

  Reference numeral 3 denotes a push button made of an insulating resin. A plurality of push buttons 3 are mounted in the operating body 2 so as to be movable up and down, and their upper portions protrude to a position slightly lower than the upper surface of the operating body 2.

  Reference numeral 4 denotes a wiring board having a plurality of wiring patterns (not shown) formed on the upper and lower surfaces, and a plurality of fixed contacts 5 made of carbon or the like are formed on the upper surface and project upward. A plurality of push-type switches 6 having the bottom surface of the push button 3 in contact with the shaft portion 6A are mounted.

  Further, 7 is a movable contact piece made of a conductive metal thin plate. One end of the movable contact piece 7 is fixed to the lower surface of the operating body 2 and the other end is elastically contacted to the fixed contact 5 in a slightly bent state, and the upper surface of the wiring board 4 Is covered with a case 1 to constitute a composite operation switch.

  The composite operation switch configured as described above is mounted on the front panel portion of the vehicle interior with the operating body 2 and the push button 3 protruding forward, and the plurality of fixed contacts 5 and switches 6 are connected to the wiring board 4. Are electrically connected to an electronic circuit (not shown) of an automobile via a wiring pattern, a connector, a lead wire (not shown), or the like.

  In the above configuration, when the operating body 2 is rotated with a finger, the movable contact piece 7 on the lower surface elastically slides on the upper surface of the wiring board 4 or the fixed contact 5, and a plurality of fixed contacts 5 are interposed via the movable contact piece 7. The electrical signal is output to the electronic circuit of the vehicle, and for example, operations such as audio volume and air temperature increase / decrease are performed.

  Further, when a plurality of pushbuttons 3 at the center of the operating body 2 are pressed with a finger, the bottom surface of the pushbutton 3 presses the shaft portion 6A, and the switch 6 is electrically connected / disconnected, which is detected by an electronic circuit, For example, the audio mode and the air volume of the air conditioner are switched.

  That is, it is configured such that various devices in the vehicle can be easily operated by rotating the operation body 2 of the composite operation switch mounted on the inside of the passenger compartment or pressing the plurality of push buttons 3. ing.

  When manufacturing such a composite operation switch, a plurality of switches 6 are soldered to lands or the like and mounted on the upper surface of the wiring board 4, but normally solder contains flux, As shown in the partial plan view of FIG. 7, the melted flux 9 may flow from the switch 6 to the upper surface of the wiring board 4 and adhere to the upper surface of the fixed contact 5 during soldering.

  When the flux 9 adheres to the upper surface of the fixed contact 5 and solidifies as described above, the contact of the movable contact piece 7 with the fixed contact 5 becomes unstable, and the reliable electrical contact / separation of the plurality of fixed contacts 5 is prevented. It becomes impossible to do.

  For this reason, when the flux 9 adheres to the upper surface of the fixed contact 5, it is wiped off with a cleaning solution or the like, or the switch 6 is soldered in a state where the upper surface of the fixed contact 5 is previously covered with resin or the like. The work which peels off this resin later was needed.

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

JP 2008-186755 A

  However, in the above-described conventional composite operation switch, when the plurality of switches 6 are soldered to the wiring board 4, the flux 9 may adhere to the upper surface of the fixed contact 5. An operation of covering the upper surface with a resin or the like and peeling it off after soldering is required, and there is a problem that it takes time and effort to manufacture.

  An object of the present invention is to solve such a conventional problem, and to provide a composite operation switch that is easy to manufacture and that can be reliably operated.

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

  According to the first aspect of the present invention, a composite operation switch is configured by forming a frame surrounding the fixed contact and the switch outer periphery on the upper surface of the wiring board, and soldering the switch to the wiring board. The flux can be prevented from flowing out from the switch and into the fixed contact by the frame, and the flux can be prevented from adhering to the upper surface of the fixed contact. It has the effect that a composite operation switch can be obtained in which the contact of the fixed contact is reliable.

  The invention according to claim 2 is the invention according to claim 1, wherein a groove or a hole is provided in the frame, and the flux or the hole in the frame prevents the flux from adhering to the upper surface of the fixed contact. Since it can prevent reliably, it has the effect | action that it becomes possible to perform more reliable operation.

  As described above, according to the present invention, it is possible to obtain an advantageous effect that a composite operation switch that can be easily manufactured and can be reliably operated can be realized.

Sectional drawing of the composite operation switch by one embodiment of this invention Exploded perspective view Partial sectional view of the same Partial plan view Cross section of a conventional composite operation switch Exploded perspective view Partial plan 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 sectional view of a composite operation switch according to an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, in which 1 is a case made of an insulating resin such as ABS, and 2 is a substantially cylindrical shape. The operating body 2 is an operating body made of insulating resin and is rotatably housed and mounted in the case 1, and the upper portion of the operating body 2 protrudes from an opening on the upper surface of the case 1.

  Reference numeral 3 denotes a push button made of an insulating resin such as polycarbonate. A plurality of push buttons 3 are mounted in the operation body 2 so as to be movable up and down, and their upper portions protrude to a position slightly lower than the upper surface of the operation body 2.

  Reference numeral 14 denotes a wiring board such as paper phenol or glass-filled epoxy, and a plurality of wiring patterns (not shown) are formed on the upper and lower surfaces by copper foil or the like. A plurality of fixed contacts 5 are provided.

  Further, reference numeral 6 denotes a push-type switch. A plurality of switches 6 are mounted on the upper surface of the wiring board 14, and the lower surface of the push button 3 is in contact with the shaft portion 6A protruding upward from the switch 6.

  As shown in the partial sectional view of FIG. 3 and the partial plan view of FIG. 4, the outer periphery of the fixed contact 5 and the outer periphery of the switch 6 on the upper surface of the wiring board 14 are surrounded by heights such as epoxy and polyester. Frame portions 15 and 16 having a width of about 10 to 15 μm and a width of about 0.2 to 0.3 mm are formed, and a groove portion 17 and a hole portion 18 are provided in the frame portions 15 and 16.

  Reference numeral 7 denotes a movable contact piece made of a conductive metal thin plate. One end of the movable contact piece 7 is fixed to the lower surface of the operating body 2 and the other end is elastically contacted to the fixed contact 5 in a slightly bent state. Is covered with a case 1 to constitute a composite operation switch.

  When manufacturing such a composite operation switch, the plurality of switches 6 are soldered to lands or the like and mounted on the upper surface of the wiring board 14, but normally solder contains flux, As shown in FIG. 4, the melted flux 9 may flow on the upper surface of the wiring board 14 during soldering.

  However, in the present invention, since the frame portion 16 is formed on the outer periphery of the switch 6 and the hole portion 18 is provided in the frame portion 16, the flux 9 first passes from the hole portion 18 to the lower surface of the wiring board 14. And then dammed by the frame portion 16.

  Even if the amount of the flux 9 is large and flows out from the frame portion 16, the frame portion 15 is also provided on the outer periphery of the fixed contact 5, so that the flux 9 is dammed and fixed by the frame portion 15. It is formed so as not to flow into the contact 5.

  Further, since the groove portion 17 is formed on the switch 6 side in the frame portion 15, even if the flux 9 should flow into the frame portion 15, the groove portion 17 causes the flux 9 to move to the upper surface of the fixed contact 5. It is designed to prevent adhesion.

  That is, the frame portions 15 and 16 are provided on the outer periphery of the fixed contact 5 and the switch 6, and the groove portion 17 and the hole portion 18 are formed in the frame portions 15 and 16 to solder the switch 6 to the wiring board 14. At this time, even when the flux 9 flows out, it can be prevented from adhering to the upper surface of the fixed contact 5.

  Therefore, it is not necessary to remove the flux 9 with a cleaning solution during the production, or to cover the upper surface of the fixed contact 5 with a resin and then peel it off after soldering, so that the production can be easily performed. ing.

  The composite operation switch configured as described above is mounted on the front panel portion of the vehicle interior with the operation body 2 and the push button 3 protruding forward, and the plurality of fixed contacts 5 and the switch 6 are connected to the wiring board 14. Are electrically connected to an electronic circuit (not shown) of an automobile via a wiring pattern, a connector, a lead wire (not shown), or the like.

  In the above configuration, when the operating body 2 is rotated with a finger, the movable contact piece 7 on the lower surface elastically slides on the upper surface of the wiring board 14 or the fixed contact 5, and a plurality of fixed contacts 5 are interposed via the movable contact piece 7. The electrical signal is output to the electronic circuit of the vehicle, and for example, operations such as audio volume and air temperature increase / decrease are performed.

  Further, when a plurality of pushbuttons 3 at the center of the operating body 2 are pressed with a finger, the bottom surface of the pushbutton 3 presses the shaft portion 6A, and the switch 6 is electrically connected / disconnected, which is detected by an electronic circuit, For example, the audio mode and the air volume of the air conditioner are switched.

  That is, it is configured such that various devices in the vehicle can be easily operated by rotating the operation body 2 of the composite operation switch mounted on the inside of the passenger compartment or pressing the plurality of push buttons 3. ing.

  At this time, as described above, the frame portions 15 and 16 are formed on the outer periphery of the fixed contact 5 and the switch 6, and the groove portion 17 and the hole portion 18 are formed in the frame portions 15 and 16, respectively. When soldering to the substrate 14, it is possible to prevent the flux 9 from adhering to the upper surface of the fixed contact 5, so that stable contact of the movable contact piece 7 with the fixed contact 5 is obtained, and the plurality of fixed contacts 5 It is possible to perform reliable electrical contact and separation.

  In the above description, the configuration in which the groove portion 17 is provided in the frame portion 15 and the hole portion 18 is provided in the frame portion 16 has been described. On the contrary, the hole portion 18 is provided in the frame portion 15. A configuration in which the groove portion 17 is provided in the portion 16, or a configuration in which the groove portion 17 is provided in both the frame portions 15 and 16 in the case where inconvenience occurs when the flux 9 flows out to the lower surface of the wiring substrate 14. Implementation of the present invention is possible.

  As described above, according to the present embodiment, when the switch 6 is soldered to the wiring substrate 14 by forming the frame portions 15 and 16 surrounding the fixed contact 5 and the switch 6 on the upper surface of the wiring substrate 14. The flux 9 can be prevented from flowing out from the switch 6 and into the fixed contact 5 by the frame portions 15 and 16, and the flux 9 can be prevented from adhering to the upper surface of the fixed contact 5. It is possible to obtain a composite operation switch that can be performed and that the contact between the movable contact piece 7 and the fixed contact 5 is reliable.

  Further, by providing the groove portion 17 or the hole portion 18 in the frame portions 15 and 16, it is possible to more reliably prevent the flux 9 from adhering to the upper surface of the fixed contact 5, so that a more reliable operation can be performed. It can be a composite operation switch.

  The composite operation switch according to the present invention is easy to manufacture and can realize a reliable operation, and is useful mainly for operation of various electronic devices of automobiles.

DESCRIPTION OF SYMBOLS 1 Case 2 Operation body 3 Push button 5 Fixed contact 6 Switch 6A Shaft part 7 Movable contact piece 9 Flux 14 Wiring board 15, 16 Frame part 17 Groove part 18 Hole part

Claims (2)

An operating body rotatably mounted on the case, a push button mounted on the operating body so as to move up and down, a fixed contact with which a movable contact piece mounted on the operating body elastically contacts, and a switch pressed by the push button A composite operation switch comprising a wiring board provided on an upper surface, and a frame portion surrounding the fixed contact and the switch on the upper surface of the wiring board. The composite operation switch according to claim 1, wherein a groove or a hole is provided in the frame.

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