JP5880965B2 - Wire harness system - Google Patents

Description

  The present invention relates to a wire harness system including a plurality of electric wires.

  Conventionally, a plurality of electrical components are mounted on a vehicle, and these electrical components are connected to a power source via a wire harness. The thing of patent document 1 is known as an example of this wire harness. The electrical component is configured to be energized or disconnected by a switching element mounted on the vehicle.

JP 2007-186082 A

  In recent years, the number of electrical components tends to increase as the performance of vehicles increases. Then, the number of switching elements that perform energization or disconnection of the electrical components also increases. In addition, the wire harness connected to the electrical component is also enlarged. For this reason, the space for accommodating a switching element and a wire harness needed to be ensured in the vehicle.

  However, with an increase in the size of the living space, it has become difficult to secure a space for mounting a switching element and a wire harness in the vehicle. For this reason, size reduction of the wire harness system containing a switching element and a wire harness was calculated | required.

  This invention is completed based on the above situations, Comprising: It aims at providing the wire harness system reduced in size.

The present invention is a wire harness system that is electrically connected to a wire harness that is mounted on a vehicle and includes an electric wire bundle in which a plurality of electric wires are bundled, and a first electric wire branched from the wire harness. A first electrical component and a semiconductor switching element that is electrically connected to the wire harness and performs energization or disconnection on the first electrical component and is directly or indirectly attached to the wire bundle The switching unit is attached in the vicinity of a branch portion where the first electric wire branches from the wire harness, and the wire harness has a second different from the first electrical component. An electrical junction box having a switching element for performing energization or disconnection of the electrical component is connected, and the first electrical component is in the same vehicle type. A discrete electrical component to be used only have the second electrical component is a common electrical equipment is also used in other models.

According to the present invention, since the semiconductor switching element that performs energization or disconnection of the first electrical component can be attached to the wire bundle of the wire harness, the wire harness system can be miniaturized.
Moreover, since the electric wire extended from a branch part to an electric junction box and the electric wire extended from an electric junction box to a branch part can be omitted compared with a prior art, a wire harness system can be reduced in size.
Further, since the second electrical component can be energized or disconnected by the switching element provided in the electrical junction box, the wire harness system can be multi-functionalized.
In addition, the electrical junction box in which the switching element is accommodated may be formed to such an extent that the switching element for energizing or disconnecting the common electrical component can be accommodated. Thereby, since it is not necessary to provide a space for housing a semiconductor switching element for energizing or disconnecting individual electrical components used only in the same vehicle type, the electrical junction box can be reduced in size.
Moreover, since the switching unit provided with the semiconductor switching element for energizing or cutting off the individual electrical components is attached to the wire bundle, it is not necessary to provide a space for accommodating the semiconductor switching element. As a result, the wire harness system can be downsized as a whole.

  As embodiments of the present invention, the following embodiments are preferable.

  It is preferable that the electric wire is connected to the switching unit, and the switching unit is indirectly attached to the electric wire bundle via the electric wire.

  According to said aspect, a switching unit can be attached to an electric wire bundle using the electric wire connected to the switching unit. Thereby, since the special structure for attaching a switching unit to an electric wire bundle becomes unnecessary, a wire harness system can be reduced in size as a whole.

  The switching unit is preferably bound to the wire bundle by a binding member that bundles the plurality of wires.

  According to the above aspect, since the switching unit is bound to the wire bundle, it does not protrude to the outside of the wire harness. Thereby, a wire harness can be reduced in size.

  It is preferable to have a protector surrounding the outer periphery of the wire harness, and the switching unit is fixed to the protector.

  According to the above aspect, the switching unit can be protected by the protector.

  The switching unit is preferably fixed to the vehicle.

  According to said aspect, even if a vibration generate | occur | produces during driving | running | working of a vehicle, it can suppress that a switching unit produces a malfunction by a vibration.

  It is preferable that the vehicle is provided with a passenger compartment in which a passenger is boarded, and the switching unit is provided in the passenger compartment.

  According to the present invention, since no noise is generated when energization or disconnection is performed, the semiconductor switching element can be disposed in the passenger compartment in which the passenger is boarded. Thereby, since the accommodation space in a vehicle can be used effectively, a wire harness system can be reduced in size as a whole.

  All the switching units may be attached to the wire bundle.

  According to said aspect, since the electrical junction box which accommodates a switching unit can be abbreviate | omitted, a wire harness system can be reduced in size as a whole.

  The switching unit preferably has an overcurrent protection function. The semiconductor switching element preferably has an overcurrent protection function.

  According to said aspect, since the fuse block in which a fuse is attached so that attachment or detachment is possible can be abbreviate | omitted, a wire harness system can be reduced in size as a whole.

  The first electrical component preferably includes both individual electrical components that are used only in the same vehicle type and common electrical components that are also used in other vehicle types.

  According to said aspect, since the semiconductor switching element which performs electricity supply or a power failure with respect to an individual electrical equipment and a common electrical equipment can be attached to the wire bundle of a wire harness, a wire harness system can be reduced in size.

  According to the present invention, the wire harness system can be miniaturized.

FIG. 1 is a schematic view showing a state in which the wire harness system according to Embodiment 1 of the present invention is mounted on a vehicle. FIG. 2 is a schematic diagram showing a state in which the switching unit is attached to the wire harness. FIG. 3 is a perspective view showing the switching unit. FIG. 4 is an exploded perspective view showing the switching unit. FIG. 5 is a side view showing the connector housing and the circuit board. FIG. 6 is a bottom view showing the connector housing and the circuit board. FIG. 7 is a block diagram showing a wire harness system. FIG. 8 is a schematic diagram showing a state in which the switching unit is attached to the wire harness. FIG. 9 is a schematic view showing a state in which the switching unit is attached to the wire harness. FIG. 10 is a schematic view showing a state in which the switching unit is attached to the wire harness. FIG. 11 is a block diagram showing the wire harness system of Reference Example 1 . FIG. 12 is a block diagram showing the wire harness system of Reference Example 2 .

<Embodiment 1>
A first embodiment in which the present invention is applied to a wire harness system 11 mounted on a vehicle 10 will be described with reference to FIGS. 1 to 10.

  As shown in FIG. 1, a power source 12 and a first electrical component 14 and a second electrical component 15 electrically connected to the power source 12 via a wire harness 13 are mounted on the vehicle 10. . An electrical connection box 16 is disposed between the power supply 12 and the second electrical component 15.

(Wire harness 13)
As shown in FIG. 2, the wire harness 13 includes an electric wire bundle 18 in which a plurality of electric wires 17 are bundled. The wire bundle 18 is formed by winding a tape 19 (an example of a binding member) coated with an adhesive on one surface in a state where a plurality of wires 17 are bundled. The electric wire 17 is formed by coating the outer periphery of a core wire (not shown) with a synthetic resin insulating layer. The core wire is made of a conductive material such as metal or carbon nanotube. In the present embodiment, a stranded wire formed by twisting metal thin wires is used. As the metal used for the stranded wire, any metal such as copper, copper alloy, aluminum, aluminum alloy, iron, iron alloy, etc. can be appropriately selected as necessary. In this embodiment, copper or a copper alloy is used.

(Electric junction box 16)
As shown in FIG. 1, an electrical connection box 16 is electrically connected to the wire harness 13. The electrical junction box 16 accommodates a switching element 20 that performs energization or disconnection on the second electrical component 15. The switching element 20 may be either or both of a semiconductor relay and a mechanical relay.

  In the present embodiment, the second electrical component 15 is a common electrical component that is also used in other vehicle types. Here, “vehicle type” includes a difference in vehicle name, a difference in displacement, a difference in specifications, and a difference in destination. More specifically, for example, when the car name is different, the car name is the same but the displacement is different, the car name and the displacement are the same, but the specifications are different, but the car name is also the exhaust. The amount and specifications are the same, but include cases where the destination is different. That is, the “other vehicle type” refers to a vehicle 10 in which at least one of the vehicle name, the displacement, the specification, and the destination is different.

  The common electrical equipment includes, for example, a wiper motor, a headlight, a room light, a taillight 36, a cell motor, a washer pump, a rear window defroster, and the like. The common electrical components are not limited to these, and can be appropriately selected as necessary.

(Switching unit 21)
Further, as shown in FIG. 1, a switching unit 21 is electrically connected to the wire harness 13. The switching unit 21 is provided with a semiconductor switching element 22 for energizing or disconnecting the first electrical component 14.

  In the present embodiment, the first electrical component 14 is an individual electrical component that is used only in the same vehicle type. For individual electrical components, electrical components used only for models with different vehicle names, electrical components used only for models with different displacements, electrical components used only for models with different specifications, and models with different destinations Includes electrical components used only in

  The individual electrical components include, for example, a seat heater 31, a diisa, a DRL system, a fog lamp, a horn, a PTC heater, a rear seat room light 32, and the like. In addition, an individual electrical component is not limited to these, It can select suitably as needed.

  As shown in FIGS. 3 and 4, the switching unit 21 includes a case 23, a circuit board 24 accommodated in the case 23, and a connector housing 25 electrically connected to the circuit board 24.

  The case 23 is made of a synthetic resin and has a bottomed cylindrical shape. In this embodiment, it has a substantially rectangular tube shape.

  The circuit board 24 is formed by forming a conductive path (not shown) on an insulating substrate by a printed wiring technique. The circuit board 24 includes a first surface 26 on which the connector housing 25 is attached, and a second surface 27 on which the semiconductor switching element 22 is mounted.

  The connector housing 25 is made of synthetic resin and includes a hood portion 28 that opens to the outside of the case 23. A plurality of metal terminals 29 having a rod shape are penetrated through the back wall of the hood portion 28. A terminal (not shown) attached to the end of the electric wire 17 is inserted into the hood portion 28. Thereby, the electric wire 17 is connected to the switching unit 21. One end portion of the terminal 29 is disposed inside the hood portion 28, and the other end portion of the terminal 29 penetrates the back wall and protrudes outside the connector housing 25, and then substantially toward the circuit board 24. It is bent at a right angle. The other end of the terminal 29 penetrates the circuit board 24 and is electrically connected to a conductive path formed on the circuit board 24 by a known method such as soldering (see FIG. 5).

  As shown in FIGS. 5 and 6, the semiconductor switching element 22 is electrically connected to a conductive path formed on the circuit board 24 by a known method such as soldering on the second surface 27 of the circuit board 24. Yes. In the present embodiment, two semiconductor switching elements 22 are arranged side by side on the second surface 27 of the circuit board 24. In addition, the semiconductor switching element 22 with which the switching unit 21 is provided may be one, and may be three or more.

(Wire harness system 11)
In FIG. 1, an example of the wire harness system 11 which concerns on this embodiment is shown typically. A power supply 12 is mounted in the engine room 30 of the vehicle 10. In the engine room 30, an electrical connection box 16 connected to the power source 12 via the electric wire 17 is mounted. A wire harness 13 is connected to the electrical junction box 16. The wire harness 13 is routed at an arbitrary position as necessary, such as under the floor of the vehicle 10 or in the pillar. In this embodiment, the wire harness 13 routed under the floor of the vehicle 10 will be described as an example in FIG. An electric wire 17 is branched from the wire harness 13. A first electrical component 14 (individual electrical component) and a second electrical component 15 (common electrical component) are electrically connected to the end of the electric wire 17 branched from the wire harness 13.

  FIG. 1 shows a seat heater 31 and a rear seat room light 32 as examples of the first electrical component 14. The seat heater 31 is disposed on a seat 34 attached to the inside of a passenger compartment 33 on which the passenger is boarded. The rear seat room light 32 is disposed at a position near the ceiling of the rear seat in the passenger compartment 33.

  The switching unit 21 including the semiconductor switching element 22 for energizing or disconnecting the seat heater 31 is disposed in the vicinity of the branch portion 35 where the electric wire 17 branches from the wire harness 13 to the seat heater 31. . Similarly, the switching unit 21 including the semiconductor switching element 22 for energizing or disconnecting the rear seat room light 32 is in the vicinity of the branch portion 35 where the electric wire 17 is branched from the wire harness 13 to the seat heater 31. It is arranged.

  In FIG. 1, a taillight 36 is shown as an example of the second electrical component 15. The switching element 20 that energizes or disconnects the taillight 36 is accommodated in the electrical junction box 16.

  An instrument panel 37 is disposed in the passenger compartment 33. The instrument panel 37 is provided with a manual switch 38 for instructing energization or disconnection of at least one of the first electrical component 14 and the second electrical component 15. The manual switch 38 is electrically connected to the semiconductor switching element 22 via the signal line 50. FIG. 1 illustrates a configuration in which a manual switch 38 that instructs energization or disconnection of the seat heater 31 is disposed on the instrument panel 37. In the present embodiment, the signal line 50 is routed from the instrument panel 37 under the floor and is bundled together with the plurality of electric wires 17 into the electric wire bundle 18. The signal line 50 may be configured to be routed to the vehicle 10 through a route different from the wire bundle 18 in which the wires 17 connected to the first electrical component 14 and the second electrical component 15 are bundled.

  FIG. 7 is a block diagram showing an outline of the wire harness system 11. The power supply 12 in this embodiment is a battery and an alternator. The power supply 12 and the semiconductor switching element 22 are electrically connected via a fuse 39. The fuse 39 may be a fuse 39 formed of a metal conductor, or may be based on an overcurrent protection function realized by an electric circuit formed in the semiconductor switching element 22, or the semiconductor switching element 22. An overcurrent protection function realized by a program for controlling A part of the semiconductor switching element 22 is instructed to be energized or disconnected by a manual switch 38 disposed on the instrument panel 37.

  Further, the power supply 12 and the switching element 20 are also electrically connected via a fuse 39. The switching element 20 is arranged inside the electrical junction box 16.

(Mounting structure of the switching unit 21)
The vehicle 10 is provided with a plurality of switching units 21. Below, the example of the attachment structure of the switching unit 21 to the vehicle 10 is shown. The mounting structure of the switching unit 21 is not limited to the following configuration.

  As shown in FIG. 2, the switching unit 21 is configured to be bundled together with the wire bundle 18 by a tape 19 that binds the wire bundle 18. In other words, the switching unit 21 is directly fixed to the wire bundle 18 by winding the tape 19 around the wire bundle 18. The switching unit 21 may be configured to be exposed from the tape 19, or may be configured to be integrally bundled with the wire bundle 18 by the tape 19 and embedded in the wound tape 19.

  The switching unit 21 according to FIG. 2 is attached in the vicinity of the branch portion 35 where the wire bundle 18 including the first electric wire 17A connected to the first electrical component 14 from the wire harness 13 branches.

  Further, as shown in FIG. 8, the electric wires 17 led out from the switching unit 21 are bound to the electric wire bundle 18 by the tape 19, and the switching unit 21 is indirectly attached to the electric wire bundle 18 through the electric wires 17. It has been configured. In this way, when attaching to a portion where vibration is relatively small, the bundling work with the tape 19 is not required, so that the work efficiency is improved.

  As shown in FIG. 9, the switching unit 21 may be indirectly attached to the wire bundle 18 via the electric wire 17 and may be further fixed to the vehicle 10 with a bolt 41. The switching unit 21 may be directly attached to the vehicle body of the vehicle 10. Moreover, it is good also as a structure by which an attachment member is arrange | positioned in the vehicle 10 and the switching unit 21 is attached to this attachment member.

  Further, as shown in FIG. 10, a protector 40 surrounding the outer periphery of the wire harness 13 may be provided, and the switching unit 21 may be fixed to the protector 40 by a known method such as bolting or adhesive. . For the protector 40, any material such as a synthetic resin or a metal can be appropriately selected as necessary.

  Moreover, as shown in FIG. 1, it is good also as a structure which arrange | positions the switching unit 21 inside the compartment 33. FIG. In the present embodiment, a switching unit 21 having a semiconductor switching element 22 for energizing or disconnecting the seat heater 31 is attached below a seat 34 disposed in a passenger compartment 33. The switching unit 21 can be disposed at any position in the passenger compartment 33.

(Operation and effect of this embodiment)
Then, the effect | action and effect of this embodiment are demonstrated. The wire harness system 11 according to the present embodiment includes a wire harness 13 that is mounted on the vehicle 10 and includes an electric wire bundle 18 in which a plurality of electric wires 17 are bundled, and a first electric device that is electrically connected to the wire harness 13. A switching unit 21 that is electrically connected to the wire harness 13 and includes a semiconductor switching element 22 that performs energization or disconnection on the first electrical component 14 and is attached to the wire bundle 18. Prepare.

  According to the present embodiment, since the semiconductor switching element 22 that performs energization or disconnection of the first electrical component 14 can be attached to the wire bundle 18 of the wire harness 13, the wire harness system 11 can be reduced in size.

  Further, according to the present embodiment, the switching unit 21 is bound to the wire bundle 18 by the tape 19 that bundles the plurality of wires 17. Thereby, since the switching unit 21 is bound to the wire bundle 18, the switching unit 21 does not protrude to the outside of the wire harness 13. As a result, the wire harness 13 can be reduced in size.

  Further, according to the present embodiment, the electric wire 17 is connected to the switching unit 21, and the switching unit 21 is indirectly attached to the electric wire bundle 18 through the electric wire 17. Thereby, the switching unit 21 can be attached to the wire bundle 18 using the electric wire 17 connected to the switching unit 21. As a result, a special configuration for attaching the switching unit 21 to the wire bundle 18 becomes unnecessary, and thus the wire harness system 11 can be downsized as a whole.

  Moreover, according to this embodiment, the protector 40 surrounding the outer periphery of the wire harness 13 is arranged, and the switching unit 21 is fixed to the protector 40. Thereby, the switching unit 21 can be protected by the protector 40.

  Further, according to the present embodiment, the switching unit 21 is fixed to the vehicle 10. Thereby, even if a vibration generate | occur | produces during driving | running | working of the vehicle 10, it can suppress that the switching unit 21 produces a malfunction by a vibration.

  Further, according to the present embodiment, the vehicle 10 is provided with the passenger compartment 33 on which the passenger is boarded, and the switching unit 21 is disposed in the passenger compartment 33. Since the semiconductor switching element 22 according to the present embodiment does not generate an operating sound when energization or power interruption is performed, the semiconductor switching element 22 can be disposed in the passenger compartment 33 on which the passenger is boarded. Thereby, since the accommodation space in the vehicle 10 can be used effectively, the wire harness system 11 can be reduced in size as a whole.

  Conventionally, a technique has been known in which an electrical junction box 16 is connected to the wire harness 13 and all the switching elements 20 are accommodated in the electrical junction box 16. According to this structure, the electric wire 17 extended from the branch part 35 to the electric junction box 16 and the electric wire 17 connected to the switching element 20 inside the electric connection and returning from the electric junction box 16 to the branch part 35 are required. For this reason, there existed a problem that the wire harness 13 enlarged. In view of the above problem, in the present embodiment, the first electric wire 17 </ b> A connected to the first electrical component 14 is branched from the wire harness 13, and the switching unit 21 includes the first electric wire 17 </ b> A from the wire harness 13. It is attached in the vicinity of the branch part 35 that branches. Thereby, compared with a prior art, the electric wire 17 extended from the branch part 35 to the electrical junction box 16 is omissible. As a result, the wire harness system 11 can be reduced in size.

  Further, according to the present embodiment, the manual switch 38 that instructs the semiconductor switching element 22 to energize or disconnect the first electrical component 14 is disposed on the instrument panel 37 provided in the vehicle 10. ing. Thereby, the passenger of the vehicle 10 can cause the semiconductor switching element 22 to execute energization or disconnection of the first electrical component 14 by operating the manual switch 38 disposed on the instrument panel 37. it can.

  Moreover, according to this embodiment, the electrical connection box 16 provided with the switching element 20 which performs energization | conduction of the 2nd electrical component 15 different from the 1st electrical component 14 or an electrical disconnection is connected to the wire harness system 11. Yes. Thereby, since the 2nd electrical equipment 15 can be energized or disconnected by the switching element 20 provided in the electrical connection box 16, the wire harness system 11 can be multi-functionalized.

  Further, according to this embodiment, the first electrical component 14 is an individual electrical component that is used only in the same vehicle type, and the second electrical component 15 is a common electrical component that is also used in other vehicle types. Thereby, the electrical connection box 16 in which the switching element 20 is accommodated may be formed to the extent that the switching element 20 that performs energization or disconnection of the common electrical component can be accommodated. As a result, it is not necessary to provide a space for housing the semiconductor switching element 22 that performs energization or disconnection of individual electrical components used only in the same vehicle type, so that the electrical connection box 16 can be reduced in size.

  In addition, since the switching unit 21 including the semiconductor switching element 22 that performs energization or disconnection of the individual electrical components is attached to the wire bundle 18, it is not necessary to provide a space for accommodating the semiconductor switching element 22. As a result, the wire harness system 11 can be downsized as a whole.

< Reference Example 1 >
Next, Reference Example 1 will be described with reference to FIG. In this reference example , only the first electrical components 84A and 84B are mounted on the vehicle 10. Thereby, only the switching unit 21 provided with the semiconductor switching element 22 is mounted on the vehicle 10. All the switching units 21 are attached to the wire bundle 18.

In the present reference example , the first electrical components 84A and 84B include both individual electrical components 84A and common electrical components 84B.

  A fuse block 60 to which a plurality of fuses 39 are attached is disposed between the power supply 12 and the switching unit 21. A plurality of fuses 39 are detachably attached to the fuse block 60.

Since the configuration other than the above is substantially the same as that of the first embodiment, the same members are denoted by the same reference numerals, and redundant description is omitted.

According to this reference example , since all the switching units 21 including the semiconductor switching elements 22 are attached to the wire bundle 18, the electrical connection box 16 for accommodating the switching elements 20 can be omitted. Thereby, the wire harness system 11 can be reduced in size as a whole.

Furthermore, according to this reference example , since the semiconductor switching element 22 that performs energization or disconnection on the individual electrical component 84A and the common electrical component 84B can be attached to the wire bundle 18 of the wire harness 13, the wire harness The system 11 can be reduced in size.

< Reference Example 2 >
Subsequently, Reference Example 2 will be described with reference to FIG. In this reference example , one fuse 39 is connected between two power supplies 12 and 12 connected in parallel. The fuse 39 is attached to the fuse attachment portion 70. For example, the fuse mounting portion 70 may be formed integrally with the power supply 12. Since one fuse 39 is attached to the fuse attachment portion 70, the wire harness system 11 can be downsized as a whole, compared to a case where a fuse block to which a plurality of fuses 39 are attached is provided.

In this reference example , only the first electrical components 84A and 84B are mounted on the vehicle 10. Thereby, only the switching unit 21 provided with the semiconductor switching element 22 is mounted on the vehicle 10. All the switching units 21 are attached to the wire bundle 18.

In the present reference example , the first electrical components 84A and 84B include both individual electrical components 84A and common electrical components 84B.

  The semiconductor switching element 22 has an overcurrent protection function that stops energization of the first electrical component 14 when an overcurrent flows. The overcurrent protection function may be realized by an electric circuit formed in the semiconductor switching element 22 or an electric circuit formed in the switching unit 21, and the semiconductor switching element 22 may be energized or disconnected. It may be realized by a program to be controlled.

  Since the configuration other than the above is substantially the same as that of the first embodiment, the same members are denoted by the same reference numerals, and redundant description is omitted.

According to this reference example , since all the switching units 21 are attached to the wire bundle 18, the electrical junction box 16 can be omitted. Thereby, the wire harness system 11 can be reduced in size as a whole.

Moreover, according to this reference example , since the switching unit 21 has an overcurrent protection function, the fuse block 60 in which the plurality of fuses 39 are mounted can be omitted. Thereby, the wire harness system 11 can be reduced in size as a whole.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) It suffices that at least one switching unit 21 is attached to the wire bundle 18, and the switching unit 21 attached at a position different from the wire bundle 18 may exist.

  (2) The binding member may be a binding band. The binding band may be made of synthetic resin or metal.

(3) As a reference example, the second electrical component 15 may be an individual electrical component that is used only in the same vehicle type, and the first electrical component 14 may be a common electrical component that is also used in other vehicle types. According to said aspect, since the switching unit 21 provided with the semiconductor switching element 22 which performs electricity supply or electric disconnection of a common electrical component is attached to the wire bundle 18, the space for accommodating the semiconductor switching element 22 is provided. There is no need to provide it. As a result, the wire harness system 11 can be downsized as a whole.
On the other hand, as a reference example, the electrical junction box 16 does not need to be provided when the switching element 20 that performs energization or disconnection of individual electrical components is unnecessary. Further, when the switching element 20 is required, the wire harness system 11 can be downsized as a whole because the switching element 20 may be formed to a size that can accommodate the switching element 20.

  (4) The manual switch 38 is configured to be disposed on the instrument panel 37, but is not limited thereto, and may be disposed on the armrest of the door, and can be disposed at any position as necessary. . Moreover, it is good also as a structure which replaces with the manual switch 38 and controls the switching unit 21 from electronic control units, such as body ECU.

  (5) The switching unit 21 may contain the semiconductor switching element 22 and a mechanical relay.

  (6) The switching unit 21 may have a mechanical fuse.

DESCRIPTION OF SYMBOLS 10 ... Vehicle 11 ... Wire harness system 13 ... Wire harness 14, 84A, 84B ... 1st electrical component 15 ... 2nd electrical component 16 ... Electrical junction box 17 ... Electric wire 18 ... Wire bundle 19 ... Tape (binding member)
20 ... Switching element 21 ... Switching unit 22 ... Semiconductor switching element 33 ... Car compartment 35 ... Branch part 38 ... Manual switch 40 ... Protector

Claims (10)

A wire harness having a bundle of wires mounted on a vehicle and bundled with a plurality of wires; and
A first electrical component electrically connected to the first electric wire branched from the wire harness;
A switching unit that is electrically connected to the wire harness and includes a semiconductor switching element that performs energization or disconnection on the first electrical component, and is directly or indirectly attached to the wire bundle;
Equipped with a,
The switching unit is attached in the vicinity of a branch portion where the first electric wire branches from the wire harness,
The wire harness is connected to an electrical connection box including a switching element for performing energization or disconnection of a second electrical component different from the first electrical component,
The wire harness system in which the first electrical component is an individual electrical component that is used only in the same vehicle type, and the second electrical component is a common electrical component that is also used in other vehicle types .   The wire harness system according to claim 1, wherein the electric wire is connected to the switching unit, and the switching unit is indirectly attached to the electric wire bundle via the electric wire. Before Kiss switch ing units, wire harness system according to claim 1 or claim 2 which is bundled in the wire bundle by bundling member for bundling the plurality of wires.   The wire harness system according to claim 1, further comprising a protector surrounding an outer periphery of the wire harness, wherein the switching unit is fixed to the protector.   The wire harness system according to claim 1 or 2, wherein the switching unit is fixed to the vehicle.   The wire harness system according to any one of claims 1 to 5, wherein the vehicle is provided with a passenger compartment on which a passenger is boarded, and the switching unit is disposed in the passenger compartment. The wire harness system according to any one of claims 1 to 6 , wherein all the switching units are attached to the wire bundle . The wire harness system according to any one of claims 1 to 7, wherein the switching unit has an overcurrent protection function . The wire harness system according to any one of claims 1 to 8, wherein the semiconductor switching element has an overcurrent protection function . The wire harness according to any one of claims 1 to 9, wherein the first electrical component includes both an individual electrical component used only in the same vehicle type and a common electrical component used also in another vehicle type. system.

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