JP5895140B2 - Wire harness and switch device using the same - Google Patents

Description

  The present invention relates to a wire harness mainly used for operating various electronic devices in a vehicle cabin and a switch device using the same.

  In recent years, a switch device of various operation methods is mounted on a steering wheel, an instrument panel, etc. in an automobile, and this is connected to an electronic circuit of a vehicle via a wire harness. An increasing number of devices operate various electronic devices such as devices.

  Such a conventional wire harness and a switch device using the same will be described with reference to FIGS.

  FIG. 6 is a cross-sectional view of a conventional switch device. In FIG. 6, reference numeral 1 denotes a substantially box-like upper opening made of an insulating resin, and a substantially rectangular opening cylindrical portion 1A is formed on the upper face. .

  Reference numeral 2 denotes an operation body made of an insulating resin. The upper surface is provided with a display portion 2A formed in a shape such as a character or a symbol, and the lower surface is provided with a pressing boss 2B projecting downward. The case 1 is attached to the opening cylinder 1A so as to be movable up and down.

  3 is a wiring board having a plurality of wiring patterns (not shown) formed on the upper and lower surfaces, 4 is a push switch, and the push switch 4 is mounted on the upper surface of the wiring board 3 to form a switch contact. The lower end of the pressing boss 2B protruding from the lower surface of the operating body 2 is in contact with the upper end of the operating shaft 4A protruding upward from the upper surface of the push switch 4.

  Further, 5 is a light emitting element such as a light emitting diode, 6 is a lower case made of insulating resin, 7 is also a cover, and the light emitting element 5 is mounted and mounted on the upper surface of the wiring board 3 near the push switch 4 with the light emitting surface facing upward. At the same time, the lower case 6 covers the lower surface of the wiring board 3 and the cover 7 covers the upper surface of the upper case 1, and these are fixed by screws (not shown) or the like.

  Reference numeral 10 denotes a wire harness, in which a plurality of lead wires 12 are inserted into a substantially cylindrical tube 11 made of an insulating resin, and a connector 13 fixed to one end of the lead wire 12 is connected to a push switch via a wiring pattern. A connector 14 connected to the light emitting element 4 and the light emitting element 5 and fixed to the other end extends outward.

  Further, reference numeral 15 denotes a binding band made of an insulating resin such as polyamide. As shown in the exploded perspective view of FIG. 7A, a substantially rectangular fastening portion 15B in which an engagement hole 15A is formed, and this fastening portion 15B. It is formed from a band portion 15 </ b> C that extends from the surface and has a plurality of concave and convex portions that are substantially serrated on the surface.

  The tube 11 is inserted into the substantially U-shaped engaging portion 6A at the lower end of the lower case 6, and the tube 11 is tightened by the binding band 15 wound around the outer periphery of the tube 11 and the engaging portion 6A. The switch device is configured by being fixed to the joint portion 6A.

  When the tube 11 is fixed to the engaging portion 6A by the binding band 15 as described above, first, as shown in FIG. 7B, the lead wire 12 is inserted and the connectors 13 and 14 are fixed. 11 is inserted into the engaging portion 6A of the lower case 6, the band portion 15C of the binding band 15 is wound around the outer periphery of the tube 11 and the engaging portion 6A, and then the tip of the band portion 15C is engaged with the engaging hole of the fastening portion 15B. Insert into 15A.

  Further, the front end of the band portion 15C is pulled forward with a jig or the like, the band portion 15C is press-fitted into the engagement hole 15A by the substantially serrated irregularities on the surface, and the tube 11 is fastened to the engagement portion 6A. As shown in (c), the excess band portion 15C protruding from the engagement hole 15A is cut, and the binding band 15 fixes the wire harness 10 to the engagement portion 6A.

  The switch device configured as described above is attached to, for example, a spoke (not shown) of a steering wheel, for example, in the vehicle interior with the upper surface of the operation body 2 facing forward, and is attached to the automobile, and the connector 14 is Connected to an electronic circuit (not shown) of the vehicle, the push switch 4 and the light emitting element 5 are electrically connected to the electronic circuit via the wire harness 10.

  In the above configuration, when the upper surface of the operating body 2 is pressed with a finger, the operating body 2 moves downward, the lower end of the pressing boss 2B presses the operating shaft 4A, and the push switch 4 is electrically connected / disconnected. This electric signal is output to an electronic circuit of the vehicle, and for example, operations such as increasing / decreasing the volume of audio or switching the temperature and air volume of an air conditioner are performed.

  In addition, when the surroundings are dark, such as at night or in a tunnel, when the combination switch (not shown) mounted near the steering wheel is operated, the electrical circuit of the vehicle detects this electrical contact / separation, The light emitting element 5 is caused to emit light.

  And the light of this light emitting element 5 advances upward, and the display part 2A of the upper surface of the operation body 2 is illuminated from below, so that the operation body 2 can be easily identified and operated.

  In other words, by connecting the switch device mounted on the spoke or the like to the vehicle's electronic circuit via the wire harness 10 and pressing the operating body 2 of the switch device, various devices in the vehicle can be operated. Even when the surroundings are dark, the plurality of light emitting elements 5 emit light and the display unit 2A of the operation body 2 is illuminated so that the operation body 2 can be easily operated.

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

JP 2007-257799 A

  However, in the above conventional wire harness and switch device, when fixing the wire harness 10 to the engaging portion 6A of the lower case 6, it is necessary to tighten and cut the binding band 15 using a jig or the like, There is a problem that assembling work takes time, and if an external force such as pulling is applied to the wire harness 10 by mistake, the position of the wire harness 10 may be displaced.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a wire harness that can be easily assembled with a simple configuration and can be reliably held, and a switch device using the wire harness.

To accomplish the above object, the outer circumference of the substantially cylindrical tubing having a plurality of lead wires are inserted, a Waiyahane scan for mounting a shaped or substantially cylindrical holder substantially U, retainer and an upper surface having an opening, on both sides of the substantially orthogonal direction to this upper surface, disposed opposite the substantially V-shaped pair of pressing portions which are bent inwardly at an intermediate portion of the holder, the pressing portion is pressed against the tube outer periphery, an external force is applied in the lateral direction of the one end in the direction in which the lead wire is inserted in the holder, so that the pressing portion is bent inward, the retainer is elastically deformed in the left right direction A wire harness is constructed, and both ends of the holder in the left-right direction are locked to the case engaging portion to constitute a switch device. When locking the wire harness to the case engaging portion, especially a jig Can be installed easily without using It is possible to obtain a wire harness that can be securely held without misalignment and a switch device using the wire harness even when a slight force is applied to the wire harness. .

  As described above, according to the present invention, it is possible to obtain an advantageous effect that a wire harness that can be easily assembled and can be reliably held, and a switch device using the wire harness can be realized.

Sectional drawing of the switch apparatus by one embodiment of this invention Exploded perspective view of the wire harness Exploded perspective view Plan view Exploded perspective view according to another embodiment Sectional view of a conventional switch device Exploded perspective view

  Embodiments of the present invention will be described below 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. In FIG. A substantially rectangular opening cylinder 1A is formed.

  An operation body 2 made of an insulating resin such as polycarbonate or ABS is provided with a display portion 2A formed in a shape such as a character or a symbol on the upper surface, and a pressing boss 2B protruding downward on the lower surface. The operating body 2 is attached to the opening cylinder 1A of the upper case 1 so as to be movable up and down.

  Reference numeral 3 denotes a wiring board such as paper phenol or glass-filled epoxy, 4 denotes a push switch, and a plurality of wiring patterns (not shown) are formed on the upper and lower surfaces of the wiring board 3 by copper foil or the like. 3. A push switch 4 is mounted on the top surface to form a switch contact, and a lower end of the pressing boss 2B projecting from the lower surface of the operating body 2 is in contact with an upper end of the operating shaft 4A projecting upward from the upper surface of the push switch 4. .

  Further, 5 is a light emitting element such as a light emitting diode, 16 is a lower case made of insulating resin, 7 is also a cover, and the light emitting element 5 is mounted on the upper surface of the wiring board 3 near the push switch 4 with the light emitting surface facing upward. At the same time, the lower case 16 covers the lower surface of the wiring board 3 and the cover 7 covers the upper surface of the upper case 1, and these are fixed by screws (not shown) or the like.

  Reference numeral 20 denotes a wire harness in which a plurality of lead wires 12 are inserted into a substantially cylindrical tube 11 made of insulating resin, and a connector 13 fixed to one end of the lead wire 12 is connected to a push switch via a wiring pattern. A connector 14 connected to the light emitting element 4 and the light emitting element 5 and fixed to the other end extends outward.

  Furthermore, 21 is a substantially U-shaped holder made of polyamide, polyoxymethylene, or the like, and as shown in the exploded perspective view of FIG. A pair of substantially V-shaped pressing portions 21B bent inward are provided around the middle portion in the direction orthogonal to 21A.

  Then, the pressing portion 21B of the holder 21 is pressed against the outer periphery of the tube 11, and both ends of the holder 21 are engaged with the substantially claw-shaped engaging portion 16A at the lower end of the lower case 16, and the tube 11 is tightened. The switch device is configured by being fixed to the joint portion 16A.

  When the tube 11 is fixed to the engaging portion 16A by the holder 21 as described above, first, as shown in FIG. 2B, the lead wire 12 is inserted and the tubes 13 and 14 are fixed. 11, the pressing portion 21 </ b> B is pressed against the outer periphery of the tube 11 from above, and the holder 21 is mounted on the outer periphery of the tube 11.

  Next, as shown in the exploded perspective view of FIG. 3A, the holder 21 attached to the outer periphery of the tube 11 is inserted into the engaging portion 16A of the lower case 16 from above. As shown in b), the lower end of the holding tool 21 is inclined, and its width is slightly larger than the upper end of the engaging portion 16A. Therefore, the lower end of the holding tool 21 is inserted into the upper end of the engaging portion 16A. In the state, the holder 21 is elastically deformed in the left-right direction, and the pressing portion 21B further bites into the outer periphery of the tube 11 and comes into pressure contact therewith.

  As shown in FIG. 3C, when the holder 21 is pushed into the engaging portion 16A, the lower end of the holder 21 comes into contact with the lower end of the engaging portion 16A having substantially the same width, and the tube 11 is held. It is fixed to the engaging portion 16A by the tool 21.

  At this time, the width of the lower end of the holder 21 is slightly larger than the width of the lower end of the engaging portion 16A, the holding member 21 is held in the engaging portion 16A in a slightly bent state, and the pressing portion 21B is held in the tube 11. If the outer periphery of the tube 11 is made to bite greatly, the tube 11 can be held more firmly.

  That is, the wire harness 20 can be easily attached to the engaging portion 16A without using a jig or the like by simply inserting the holder 21 mounted on the outer periphery of the tube 11 into the engaging portion 16A of the lower case 16 from above. It can be installed.

  The switch device configured as described above is attached to, for example, a spoke (not shown) of a steering wheel, for example, in the vehicle interior with the upper surface of the operation body 2 facing forward, and is attached to the automobile, and the connector 14 is It is connected to an electronic circuit (not shown) of the vehicle, and the push switch 4 and the light emitting element 5 are electrically connected to the electronic circuit via the wire harness 20.

  In the above configuration, when the upper surface of the operating body 2 is pressed with a finger, the operating body 2 moves downward, the lower end of the pressing boss 2B presses the operating shaft 4A, and the push switch 4 is electrically connected / disconnected. This electric signal is output to an electronic circuit of the vehicle, and for example, operations such as increasing / decreasing the volume of audio or switching the temperature and air volume of an air conditioner are performed.

  In addition, when the surroundings are dark, such as at night or in a tunnel, when the combination switch (not shown) mounted near the steering wheel is operated, the electrical circuit of the vehicle detects this electrical contact / separation, The light emitting element 5 is caused to emit light.

  And the light of this light emitting element 5 advances upward, and the display part 2A of the upper surface of the operation body 2 is illuminated from below, so that the operation body 2 can be easily identified and operated.

  In other words, by connecting the switch device mounted on the spoke or the like to the electronic circuit of the vehicle via the wire harness 20 and pressing the operation body 2 of the switch device, various devices in the vehicle can be operated. Even when the surroundings are dark, the plurality of light emitting elements 5 are caused to emit light and the display unit 2A of the operation body 2 is illuminated so that the operation body 2 can be easily operated.

  In the present invention, as described above, the holding member 21 in which the pressing portion 21B bent inward of the intermediate portion is pressed against the outer periphery of the tube 11 is simply attached to the engaging portion 16A of the lower case 16 from above. Therefore, since the wire harness 20 can be locked to the engaging portion 16A without using a jig or the like, the assembly work can be performed in a short time.

  That is, a pair of substantially V-shaped pressing portions 21 </ b> B bent inward of the intermediate portion of the holder 21 are pressed against the outer periphery of the tube 11 through which the plurality of lead wires 12 are inserted to form the wire harness 20. The holder 21 is engaged with the engaging portion 16A of the lower case 16 and the switch device is assembled so that the wire harness 20 can be easily fixed to the engaging portion 16A.

  Furthermore, the pressing portion 21B of the holding tool 21 is brought into pressure contact with the outer periphery of the tube 11, and the wire harness 20 is locked to the engaging portion 16A. The wire harness 20 can be held.

  That is, as shown in the plan view of FIG. 4A, the pressing portion 21B is pressed against the outer periphery of the tube 11 and the holder 21 is locked to the engaging portion 16A as shown in FIG. For example, when an external force is applied to pull the tube 11 to the right, for example, the right end of the holder 21 comes into contact with the engaging portion 16A, and the holder 21 is elastically deformed in the left-right direction.

  And since the press part 21B largely bends inward, it bites into the outer periphery of the tube 11 more strongly, and the tube 11 does not move rightward by the holding force of this press part 21B.

  When such an external force is lost, the holder 21 is elastically restored to the original state as shown in FIG. 4A, the pressing portion 21B is also restored to the original state, and the tube 11 is held. Done.

  That is, when an external force in the pulling direction is applied to the tube 11 or the like, the holder 21 is elastically deformed, and the pressing portion 21B is more strongly pressed against the outer periphery of the tube 11 to prevent the position of the wire harness 20 from being misaligned. It is configured so that it can be easily held.

  In the above description, the configuration in which the wire harness 20 is locked to the engaging portion 16A using the holder 21 having a substantially U-shape and a pair of pressing portions 21B formed in the intermediate portion has been described. As shown in the exploded perspective view of FIG. 5 (a), an opening 21C is formed on the upper and lower surfaces of the intermediate part, and is substantially bent inward before and after the intermediate part perpendicular to the opening 21C. The present invention can also be implemented as a configuration using a substantially cylindrical holder 21E provided with a pair of V-shaped pressing portions 21D.

  When such a substantially cylindrical holder 21E is used, as shown in FIG. 5B, first, the lead wire 12 is inserted into the outer periphery of the tube 11 to which the connectors 13 and 14 are fixed, The pressing portion 21D is brought into pressure contact with the holder 21E and then inserted into the engaging portion 16A of the lower case 16 from above as shown in FIG. 5 (c).

  Further, as shown in FIG. 5 (d), the tube 11 in which the holding tool 21E is pushed into the engaging portion 16A, both ends of the holding tool 21E are locked to the engaging portion 16A, and the pressing portion 21D is in pressure contact is provided with the holding tool. It is fixed to the engaging portion 16A by 21E.

  In the above description, the push switch 4 is mounted and mounted on the upper surface of the wiring board 3 to form a switch contact. However, a fixed contact is formed on the upper surface of the wiring board 3 with carbon or the like, and the switch contact is formed on the upper surface. Various switches, such as a dome-shaped configuration with movable contact made of a thin conductive metal plate, or a substantially dome-shaped flexible rubber sheet with a movable contact formed on the bottom of a fixed contact The present invention can be implemented even with a configuration using contacts.

  As described above, according to the present embodiment, a pair of substantially V-shaped pressing portions 21B bent inward of the intermediate portion of the holder 21 are pressed against the outer periphery of the tube 11 through which the plurality of lead wires 12 are inserted. When the wire harness 20 is locked to the engaging portion 16A by forming the wire harness 20 and locking both ends of the holder 21 to the engaging portion 16A of the lower case 16, a jig or the like is used. Since the wire harness 20 can be easily mounted without being displaced, the assembly work can be performed in a short time, and even when a slight force is applied to the wire harness 20, a wire harness that can be securely held without misalignment, and the same A switch device can be obtained.

  The wire harness according to the present invention and the switch device using the wire harness have an advantageous effect that an assembly that is easy to assemble and can be reliably held is obtained, and is useful mainly for operation of various electronic devices of automobiles. is there.

DESCRIPTION OF SYMBOLS 1 Upper case 1A Opening cylinder part 2 Operation body 2A Display part 2B Press boss 3 Wiring board 4 Push switch 4A Operation shaft 5 Light emitting element 7 Cover 11 Tube 12 Lead wire 13, 14 Connector 16 Lower case 16A Engagement part 20 Wire harness 21 , 21E Clamp 21A, 21C Opening 21B, 21D Pressing part

Claims (2)

A wire harness for attaching a substantially U-shaped or substantially cylindrical holder to the outer periphery of a substantially cylindrical tube through which a plurality of lead wires are inserted , wherein the holder has an upper surface having an opening, and the upper surface to both sides of the substantially orthogonal direction, opposed substantially V-shaped pair of pressing portions which are bent inwardly at an intermediate portion of the retainer, and is pressed against the pressing portion to the tube periphery, A wire harness in which, when an external force is applied to one end in the left-right direction in the direction in which the lead wire of the holder is inserted, the pressing portion bends inward, and the holder is elastically deformed in the left-right direction . A substantially box-shaped case, a switch contact that makes electrical contact / separation in response to an operation of an operating body mounted on the case, and a wire harness connected to the switch contact and extending outwardly becomes, the switch device provided with a engaging portion for engaging said left and right opposite ends of the retainer mounted to the wire harness to the case.

Images