JP5825529B2 - Electronic component unit and wire harness system - Google Patents

Description

  The present invention relates to an electronic component unit mounted on a vehicle and a wire harness system to which the electronic component unit is attached.

  An electronic component unit that houses electronic components such as resistors and switching elements is mounted on the vehicle. The electronic component unit includes a connector housing that fits with the mating member. Terminals are passed through the back wall of the connector housing. One end of the terminal is disposed in the connector housing and is electrically connected to the counterpart member. The other end of the terminal is electrically connected to the conductive path of the circuit board. The thing of patent document 1 is known as such an electronic component unit.

JP 2006-31714 A

  Recently, as the performance of vehicles increases, the number of electronic components mounted on the vehicle tends to increase. For this reason, the number of electronic component units that accommodate electronic components also increases. Then, a larger space is required to arrange the electronic component unit.

  On the other hand, since the vehicle is required to be comfortable, the passenger compartment tends to increase in size. As a result, the space for arranging the electronic component units tends to be limited.

  For this reason, downsizing of the electronic component unit has been demanded. Also, a wire harness system including an electronic component unit and a wire harness to which the electronic component unit is connected has been required to be downsized as a whole because the installation space is restricted.

  This invention is completed based on the above situations, Comprising: It aims at providing the electronic component unit and wire harness system which were reduced in size.

The present invention is an electronic component unit, comprising a circuit board, a connector housing at least partially overlapping the circuit board, and of the circuit boards, the connector housing overlaps the circuit board. The connector housing has a cavity, and a terminal is disposed through the inner wall of the cavity, and one end of the terminal is in the cavity. And the other end of the terminal is electrically connected to the circuit board, and the terminal protrudes rearward of the connector housing in a state of passing through the back wall on the circuit board side. and bent down, the the connector housing is formed board latching section for engaging an end portion of the circuit board, one end of the terminal is the back wall A direction that is through, the direction in which the end portion of the circuit board is engaged with the substrate engaging portions are substantially parallel.

According to the present invention, an area of the circuit board where the connector housing and the circuit board overlap can be effectively used as a space for arranging electronic components. As a result, the space can be used more effectively than in the case where the electronic component is not disposed in the region where the connector housing and the circuit board overlap, and the electronic component unit can be downsized.
Further, by passing the terminal through the back wall of the connector housing, the end portion of the circuit board can be locked to the board locking portion. Thereby, the assembly process of a connector housing and a circuit board can be simplified compared with the case where a connector housing and a circuit board are screwed, for example. The term “substantially parallel” includes the case where the direction in which one end of the terminal penetrates the back wall is parallel to the direction in which the end of the circuit board is locked to the board locking portion. In addition, even if it is not parallel, the case where it can be considered substantially parallel is also included.

  As embodiments of the present invention, the following embodiments are preferable. The circuit board has a first surface and a second surface located on the opposite side of the first surface, the connector housing is disposed on the first surface, and the electronic surface is disposed on the second surface. It is preferable that the parts are arranged.

  According to the above aspect, in the region where the connector housing and the circuit board overlap, the connector housing is disposed on the first surface of the circuit board, and the electronic component is disposed on the second surface of the circuit board. It has become. Thereby, for example, compared with the case where both the connector housing and the electronic component are arranged on the first surface of the circuit board, the electronic component unit can be downsized in the direction intersecting the plate surface of the circuit board.

Inside the front Symbol cavity being adapted to mating terminal to be electrically connected to the terminal is accommodated, the interior of the cavity is formed with a lance elastically deformed together with inwardly projecting The counterpart terminal is preferably held inside the cavity by engaging with the lance.

  According to said aspect, the other party terminal and a terminal can be electrically connected by accommodating the other party terminal in the inside of a cavity. Thereby, compared with the case where the other party connector housing is accommodated in the inside of a cavity, an electronic component unit can be reduced in size, for example.

  It is preferable that the circuit board is accommodated in a case in which an opening is formed, and a substrate holding groove for holding an edge portion of the circuit board is formed on an inner wall of the case.

  According to said aspect, a circuit board can be hold | maintained in a case by the simple method of hold | maintaining the edge of a circuit board in a board | substrate holding groove. Thereby, an electronic component unit can be reduced in size.

  The case is configured to be attached to an electric wire bundle in which a plurality of electric wires are bundled by a binding member, and the case is preferably provided with a wound portion that is wound together with the electric wire bundle by the binding member. .

  According to the above aspect, since the wound portion is attached to the wire harness by winding the wound portion together with the wire harness with the binding member, the electronic component unit can be converted into the wire harness with a simple configuration. Can be attached. Further, for example, even when the wire harness has a large diameter, the electronic component unit can be attached by lengthening the binding member. Therefore, it becomes possible to provide versatility while simplifying the configuration of the electronic component unit.

  It is preferable that the case includes a locking portion that locks the temporary electric wire bundle in which the plurality of electric wires are temporarily wound by the temporary binding member.

  According to said aspect, a binding member is wound from this temporary winding state, and a wire harness is comprised by locking the latching | locking part of an electronic component unit to the 1 or several electric wire in the temporary wire bundle of a temporary winding state. Workability can be improved

  It is preferable that the said latching | locking part consists of a pair of latching piece which pinches | interposes one or several electric wire among these electric wires.

  According to said aspect, it becomes possible to comprise the latching | locking part of an electronic component unit with a simple structure.

  It is preferable that the case has a concave surface that comes into contact with an outer surface of a temporary electric wire bundle in which a plurality of electric wires are temporarily wound by a temporary binding member.

  According to said aspect, since an electronic component unit has a concave surface contact | abutted on the outer surface of a wire harness, it is protruding from the wire harness of an electronic component unit by inserting at least one part of the outer peripheral surface of a wire harness in a concave surface. Can be suppressed.

It is preferable that the wire bundle is formed in a state where the binding member is wound around the temporary wire bundle, and the case is embedded in the binding member in a state where the binding member is wound.

  According to the above aspect, since the electronic component unit is protected by the binding member, it is possible to suppress a collision with a foreign object.

  The case is preferably formed with a portion to be attached to the vehicle.

  According to said aspect, it becomes possible to suppress that an electronic component unit receives the influence by the heat and vibration of an electric wire by attaching an electronic component unit to a vehicle.

  It is preferable that the electronic component is a switching element that performs energization or disconnection on a load.

  According to the above aspect, the electronic component unit can execute energization or disconnection on the load.

  Moreover, it is a wire harness system mounted in a vehicle, Comprising: It is preferable to provide the wire harness which has an electric wire bundle which consists of several electric wires, and the electronic component unit attached to the said wire harness directly or indirectly. .

  According to said aspect, since a wire harness system is equipped with the electronic component unit reduced in size, a wire harness system can be reduced in size as a whole.

  ADVANTAGE OF THE INVENTION According to this invention, while reducing an electronic component unit, a wire harness system can be reduced in size as a whole.

FIG. 1 is a schematic diagram showing a state in which the wire harness according to the first embodiment of the present invention is mounted on a vehicle. FIG. 2 is a schematic view showing a state in which the electronic component unit is attached to the wire harness. FIG. 3 is a schematic view showing an electronic component unit. FIG. 4 is an exploded perspective view showing the electronic component unit. FIG. 5 is a side view showing the connector housing and the circuit board. FIG. 6 is a plan view showing the connector housing and the circuit board. FIG. 7 is a cross-sectional view showing the electronic component unit. FIG. 8 is a cross-sectional view showing the electronic component unit. FIG. 9 is a block diagram showing a wire harness system. FIG. 10 is a schematic view showing a state in which the electronic component unit is attached to the wire harness. FIG. 11 is a schematic view showing a state where the electronic component unit is attached to the wire harness. FIG. 12 is a schematic view showing a state in which the electronic component unit is attached to the wire harness. FIG. 13 is a rear view showing an electronic component unit according to Embodiment 2 of the present invention. FIG. 14 is a front view showing the electronic component unit. FIG. 15 is a schematic view showing a state in which the electronic component unit is locked to the temporarily wound temporary electric wire bundle. FIG. 16 is a schematic diagram showing a state in which the electronic component unit is attached to the wire harness. FIG. 17 is a front view showing an electronic component unit according to Embodiment 3 of the present invention. FIG. 18 is a schematic diagram showing a state in which the electronic component unit is locked to the temporarily wound temporary electric wire bundle. FIG. 19 is a schematic view showing a state in which the electronic component unit is attached to the wire harness. FIG. 20 is a side view showing an electronic component unit according to Embodiment 4 of the present invention. FIG. 21 is a plan view showing the electronic component unit. FIG. 22 is a schematic diagram showing a state in which the electronic component unit is attached to the wire harness. FIG. 23 is a plan view showing an electronic component unit according to Embodiment 5 of the present invention. FIG. 24 is a view showing a state where the electronic component unit is attached to the vehicle in the BB cross section of FIG. FIG. 25 is a rear view showing the receiving portion of the vehicle. 26 is a cross-sectional view taken along line AA in FIG. FIG. 27 is a schematic diagram showing a state in which the electronic component unit is attached to the vehicle. FIG. 28 is a plan view showing an electronic component unit according to Embodiment 6 of the present invention. FIG. 29 is a side view showing the electronic component unit. FIG. 30 is a front view showing the electronic component unit. FIG. 31 is a partially cutaway rear view showing a state where the electronic component unit is attached to the vehicle.

<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 12. In the following description, the left side in FIG. 7 is the front side, and the right side is the rear side. Moreover, let the upper side in FIG. 7 be a front side, and let the lower side be a back side.

  As shown in FIG. 1, a vehicle 10 is equipped with a power supply 12 and a wire harness 13 electrically connected to the power supply 12. An electronic component unit 21 and an electrical junction box 16 are electrically connected to the wire harness 13. The electronic component unit 21 is electrically connected to the unit side load 14 (an example of a load) via the wire harness 13. The electrical junction box 16 is electrically connected to the box side load 15 via the wire harness 13.

(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 box-side load 15. The switching element 20 may be either or both of a semiconductor relay and a mechanical relay.

  In the present embodiment, the box-side load 15 is a common load used also 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 load 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 load is not limited to these, and can be appropriately selected as necessary.

(Electronic component unit 21)
As shown in FIG. 1, an electronic component unit 21 is electrically connected to the wire harness 13. The electronic component unit 21 is provided with a semiconductor switching element 22 (an example of an electronic component) that performs energization or disconnection on the unit-side load 14.

  In the present embodiment, the unit side load 14 is an individual load used only in the same vehicle type. Individual loads are used only for models with different vehicle names, loads used only for models with different displacements, loads used only for models with different specifications, and only for models with different destinations. Load.

  The individual loads 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. The individual loads are not limited to these, and can be appropriately selected as necessary.

  As shown in FIGS. 3 to 8, the electronic component unit 21 includes a case 23, a circuit board 24 accommodated in the case 23, and a connector housing 25 arranged so as to at least partially overlap the circuit board 24. And comprising.

(Circuit board 24)
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 to which the connector housing 25 is attached, and a second surface 27 that is located on the opposite side of the first surface 26 and on which the semiconductor switching element 22 is mounted. In other words, the front surface of the circuit board 24 is the first surface 26, and the back surface is the second surface 27.

(Connector housing 25)
As shown in FIG. 7, the connector housing 25 is made of a synthetic resin and includes a plurality of cavities 28 that open to the front of the case 23. In the present embodiment, a plurality of (two in the present embodiment) cavities 28 formed side by side are formed to overlap each other in a plurality of stages (two stages in the present embodiment).

  A plurality of metal terminals 29 having a rod shape are penetrated through the back wall 44 of the cavity 28. A female terminal 42 (an example of a mating terminal) attached to the end of the electric wire 17 is inserted into the cavity 28. The female terminal 42 is held in the cavity 28 by being engaged with a lance 43 formed to protrude inward from the inner wall of the cavity 28. By holding the female terminal 42 in the cavity 28, the electric wire 17 is electrically connected to the electronic component unit 21 through the female terminal 42.

  As shown in FIG. 8, one end of the terminal 29 is arranged inside the cavity 28, and the other end of the terminal 29 penetrates the back wall 44 and protrudes rearward of the connector housing 25. It is bent toward the circuit board 24 at a substantially right angle. The other end of the terminal 29 is connected to the circuit board 24 while penetrating the circuit board 24.

  One end of the terminal 29 is press-fitted from behind into a through hole 45 formed in the back wall 44 of the cavity 28. Of the one end of the terminal 29, a portion located inside the cavity 28 is electrically connected to the female terminal 42. A locking projection 46 projects from one end of the terminal 29. When the locking projection 46 is locked to the back wall 44 from the rear side, the front end of one end of the terminal 29 is made.

  The other end of the terminal 29 is formed to be narrower than the other part, and is inserted into a through hole 47 formed in the circuit board 24 so as to be soldered to a conductive path of the circuit board 24. It is electrically connected by a technique.

  The connector housing 25 is formed with a board locking portion 48 that locks to the front end of the circuit board 24. By inserting the front end portion of the circuit board 24 into the board engaging portion 48 from the rear, the end portion of the circuit board 24 is engaged with the substrate engaging portion 48. The insertion direction of the circuit board 24 to the board engaging portion 48 is set substantially parallel to the press-fitting direction of the terminal 29 into the through hole 45 described above. Note that substantially parallel means that the direction in which one end of the terminal 29 is press-fitted into the back wall 44 is parallel to the direction in which the front end of the circuit board 24 is locked to the board locking portion 48. In addition to cases, it includes cases where even if not parallel, it can be considered substantially parallel.

(Case 23)
The case 23 is made of synthetic resin and has a bottomed cylindrical shape having an opening 52 that opens forward. In this embodiment, it has a substantially rectangular tube shape. A front end portion of the case 23 comes into contact with a flange portion 49 formed to protrude from the front end portion of the connector housing 25 from the rear.

  A substrate holding groove 50 into which the side edge of the circuit board 24 is inserted is formed on the inner wall of the case 23 so as to extend in the front-rear direction. The circuit board 24 is held by the case 23 by inserting the side edge of the circuit board 24 into the board holding groove 50 from behind. The circuit board 24 is disposed in the case 23 in a posture in which the plate surface of the circuit board 24 is substantially parallel to the opening direction of the opening 52.

(Arrangement of electronic parts)
As shown in FIGS. 5 and 6, the semiconductor switching element 22 is electrically connected to the conductive path formed in the circuit board 24 on the second surface 27 of the circuit board 24 by a known technique such as soldering. Has been. In the present embodiment, two semiconductor switching elements 22 are arranged side by side on the second surface 27 of the circuit board 24. The number of semiconductor switching elements 22 provided in the electronic component unit 21 may be one, or may be three or more.

  At least a portion of the connector housing 25 is disposed so as to overlap the first surface 26 of the circuit board 24. More specifically, the connector housing 25 is over the first surface 26 of the circuit board 24 by a length of about three quarters from the rear end in the opening direction of the cavity 28 with respect to the length dimension of the cavity 28 in the opening direction. Wrapping. The connector housing 25 is disposed so as to overlap the first surface 26 of the circuit board 24.

  The semiconductor switching element 22 is arranged in a region of the second surface 27 of the circuit board 24 where the connector housing 25 overlaps the circuit board 24. In other words, the semiconductor switching element 22 is disposed inside a region where the connector housing 25 is projected onto the circuit board 24.

(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 unit side load 14 (individual load) and a box side load 15 (common load) are electrically connected to the terminal 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 an example of the unit-side load 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 electronic component 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 is branched from the wire harness 13 to the seat heater 31. Yes. Similarly, the electronic component unit 21 including the semiconductor switching element 22 that performs energization or disconnection on the rear seat room light 32 has a branch portion 35 where the electric wire 17 is branched from the wire harness 13 to the seat heater 31. It is arranged in the vicinity.

  FIG. 1 shows a taillight 36 as an example of the box-side load 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. On the instrument panel 37, a manual switch 38 for instructing at least one of the unit side load 14 and the box side load 15 to be energized or disconnected is disposed. The manual switch 38 is electrically connected to the semiconductor switching element 22 via the signal line 40. 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 40 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 40 may be configured to be routed to the vehicle 10 through a route different from the wire bundle 18 in which the electric wires 17 connected to the unit side load 14 and the box side load 15 are bundled.

  FIG. 9 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 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 electronic component unit 21)
The vehicle 10 is provided with a plurality of electronic component units 21. Below, the example of the attachment structure of the electronic component unit 21 to the vehicle 10 is shown. The mounting structure of the electronic component unit 21 is not limited to the following configuration.

  As shown in FIG. 2, the electronic component 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 electronic component unit 21 is directly fixed to the wire bundle 18 by winding the tape 19 around the wire bundle 18. The electronic component unit 21 may be configured to be exposed from the tape 19, or may be configured to be bundled together with the wire bundle 18 by the tape 19 and embedded in the wound tape 19.

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

  Further, as shown in FIG. 10, the electric wires 17 led out from the electronic component unit 21 are bound to the electric wire bundle 18 by the tape 19, and the electronic component unit 21 is indirectly connected to the electric wire bundle 18 through the electric wires 17. It is an installed configuration. 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. 11, the electronic component unit 21 may be indirectly attached to the electric wire bundle 18 via the electric wires 17 and may be further fixed to the vehicle 10 with bolts 41.

  In addition, as shown in FIG. 12, the electronic component unit 21 may be attached to the vehicle 10 with an adhesive tape 51.

  As shown in FIG. 11 and FIG. 12, the heat generated from the electronic component unit 21 can be transmitted to the vehicle 10 by attaching the electronic component unit 21 in contact with the vehicle 10. Thereby, it can suppress that the electronic component unit 21 becomes high temperature.

  Further, as shown in FIG. 1, the electronic component unit 21 may be arranged inside the passenger compartment 33. In the present embodiment, an electronic component 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 electronic component 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 electronic component unit 21 according to the present embodiment includes a circuit board 24, a connector housing 25 arranged at least partially overlapping the circuit board 24, and of the circuit boards 24, the connector housing 25 is connected to the circuit board 24. And a semiconductor switching element 22 mounted in the overlapping region. According to the present embodiment, a region of the circuit board 24 where the connector housing 25 and the circuit board 24 overlap can be effectively used as a space for disposing the semiconductor switching element 22. Thereby, since the space can be used more effectively than the case where the semiconductor switching element 22 is not disposed in the region where the connector housing 25 and the circuit board 24 overlap, the electronic component unit 21 can be reduced in size.

  Furthermore, according to the present embodiment, the circuit board 24 has the first surface 26 and the second surface 27 located on the opposite side of the first surface 26, and the connector housing 25 is disposed on the first surface 26. The semiconductor switching element 22 is disposed on the second surface 27. Thus, in the region where the connector housing 25 and the circuit board 24 overlap, the connector housing 25 is disposed on the first surface 26 of the circuit board 24, and the semiconductor switching element 22 is disposed on the second surface 27 of the circuit board 24. Is arranged. As a result, for example, the electronic component unit 21 is made smaller in the direction intersecting the plate surface of the circuit board 24 than when both the connector housing 25 and the semiconductor switching element 22 are arranged on the first surface 26 of the circuit board 24. Can be

  Further, according to the present embodiment, the connector housing 25 includes the cavity 28, and the terminal 29 is disposed through the back wall 44 of the cavity 28, and one end of the terminal 29 is disposed in the cavity 28. In addition, the other end of the terminal 29 is electrically connected to the circuit board 24, and a female terminal 42 electrically connected to the terminal 29 is accommodated in the cavity 28. A lance 43 that protrudes inward and elastically deforms is formed inside the cavity 28, and the mating terminal is held inside the cavity 28 by engaging with the lance 43. Thereby, by accommodating the female terminal 42 inside the cavity 28, the female terminal 42 and the terminal 29 can be electrically connected. As a result, for example, the electronic component unit 21 can be reduced in size as compared with the case where the mating connector housing is accommodated in the cavity 28.

  In addition, according to the present embodiment, the circuit board 24 is accommodated in the case 23 in which the opening 52 is formed, and the edge of the circuit board 24 is held on the inner wall of the case 23. A groove 50 is formed. Thereby, the circuit board 24 can be held in the case 23 by a simple method of holding the edge of the circuit board 24 in the board holding groove 50. As a result, the electronic component unit 21 can be reduced in size.

  In addition, according to the present embodiment, the terminal 29 is bent to the circuit board 24 side after passing through the back wall 44, and the connector housing 25 has a board locking portion for locking the end of the circuit board 24. 48 is formed, and the direction in which one end portion of the terminal 29 penetrates the back wall 44 and the direction in which the end portion of the circuit board 24 is locked to the board locking portion 48 are substantially parallel to each other. It has become. Thus, the end of the circuit board 24 can be locked to the board locking portion 48 by passing the terminal 29 through the back wall 44 of the connector housing 25. As a result, for example, the assembly process of the connector housing 25 and the circuit board 24 can be simplified as compared with the case where the connector housing 25 and the circuit board 24 are screwed.

  In addition, according to the present embodiment, the electronic component disposed in the electronic component unit 21 is the semiconductor switching element 22 that performs energization or disconnection on the unit-side load 14. As a result, the unit side load 14 can be energized or disconnected.

  The wire harness system 11 according to the present embodiment is mounted on the vehicle 10, and is directly or indirectly connected to the wire harness 13 having the wire bundle 18 including the plurality of wires 17 and the wire harness 13. And an electronic component unit 21 to be attached. Thereby, the semiconductor switching element 22 that performs energization or disconnection of the unit side load 14 can be attached to the wire bundle 18 of the wire harness 13. As described above, since the electronic component unit 21 according to the present embodiment is miniaturized, the wire harness system 11 to which the electronic component unit 21 is connected can be miniaturized as a whole.

  Further, according to the present embodiment, the electronic component unit 21 is bound to the wire bundle 18 by the tape 19 that bundles the plurality of wires 17. Thereby, since the electronic component unit 21 is bound to the wire bundle 18, it 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 electronic component unit 21, and the electronic component unit 21 is indirectly attached to the electric wire bundle 18 via the electric wire 17. Thereby, the electronic component unit 21 can be attached to the wire bundle 18 by using the electric wire 17 connected to the electronic component unit 21. As a result, a special configuration for attaching the electronic component unit 21 to the electric wire bundle 18 becomes unnecessary, so that the wire harness system 11 can be downsized as a whole.

  Further, according to the present embodiment, the vehicle 10 is provided with the passenger compartment 33 on which the passenger is boarded, and the electronic component unit 21 is provided 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.

  Moreover, according to this embodiment, the unit side load 14 is an individual load used only in the same vehicle type, and the box side load 15 is a common load used also in other vehicle types. Thereby, the electrical junction 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 load can be accommodated. As a result, since it is not necessary to provide a space for housing the semiconductor switching element 22 that performs energization or disconnection of individual loads used only in the same vehicle type, the electrical connection box 16 can be reduced in size.

  In addition, since the electronic component unit 21 including the semiconductor switching element 22 that performs energization or disconnection of the unit side load 14 is attached to the wire bundle 18, it is necessary to provide a space for accommodating the semiconductor switching element 22. Absent. As a result, the wire harness system 11 can be downsized as a whole.

  Moreover, according to this embodiment, since the electronic component unit 21 is attached in the state which contacted the vehicle 10 with the adhesive tape 51, the heat which generate | occur | produced in the electronic component unit 21 can be efficiently transmitted to the vehicle 10. . Thereby, it can suppress that the temperature of the electronic component unit 21 becomes high temperature.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 13 and 14, the case 61 of the electronic component unit 60 according to the present embodiment constitutes a temporary wire bundle 66 in which a plurality of wires 17 are temporarily wound by a tape 65 (an example of a temporary binding member). An engaging portion 62 that engages with one or more electric wires 17 is formed. The locking part 62 protrudes outward from the outer surface of the side wall of the case 61 that faces the first surface 26 of the circuit board 24, and has a pair of locking pieces 63 and 63. In other words, the locking portion 62 is formed on the side wall disposed at a position away from the circuit board 24.

  The pair of locking pieces 63, 63 is formed of a plate-like member that is curved in an arc shape so as to swell outward. The inner surfaces of the pair of locking pieces 63 and 63 are concave surfaces 64 and 64 into which one or a plurality of electric wires 17 are fitted. The shape of the pair of locking pieces 63, 63 (the curvature of the concave surface 64) and the dimension between the pair of locking pieces 63, 63 are determined according to the diameter and number of the electric wires 17 held inside the pair. .

  Specifically, for example, the pair of locking pieces 63, 63 has a shape and size that can lock one electric wire 17 between the pair of locking pieces 63, 63, or a plurality of electric wires 17 It can be set as the shape and dimension which can be latched between the locking pieces 63,63. When three or more electric wires 17 are fitted inside the pair of locking pieces 63, 63, the shape and dimensions are such that the three or more electric wires 17 can be fitted in a bundled state.

  The pair of locking pieces 63, 63 extend in the direction along the front-rear direction, and are provided over substantially the entire length of the side surface of the case 61 excluding the ends in the front-rear direction. In the present embodiment, the pair of locking pieces 63 is a set, but a plurality of sets may be provided for one electronic component unit 60. For example, a plurality of pairs of locking pieces 63, 63 having the same extending direction of the pair of locking pieces 63, 63 may be provided.

(Attaching method of electronic component unit 60)
As shown in FIG. 15, a plurality of electric wires 17 are bundled, and a tape 65 (an example of a temporary binding member) is wound a plurality of times at predetermined intervals in the extending direction to form a temporary electric wire bundle 66 in a temporarily wound state. The method of temporarily winding the tape 65 is not limited to this. For example, the temporary wire bundle 66 in a temporarily wound state may be formed by winding the tape 65 spirally (without dividing) so that the electric wire 17 is exposed.

  Next, the electronic component unit 60 attached to the end of the electric wire 17 is engaged with the electric wire 17 so that the pair of engaging pieces 63 and 63 sandwich one or more electric wires 17.

  Next, as shown in FIG. 16, a tape 67 (an example of a binding member) is further wound around the temporarily wound temporary wire bundle 66 to form a fully wound wire bundle 68. At this time, the tape 67 is wound so that the internal electric wire 17 is not exposed. During the main winding, since is locked to one or a plurality of electric wires 17 in the temporary electric wire bundle 66 in the temporary winding state, the tape winding can be easily performed while positioning the electronic component unit 60. The tape 67 used for the main winding may be the same as or different from the tape 65 used for the temporary winding.

  In the present embodiment, during the main winding, the electronic component unit 60 is wound so as to be hidden by the tape 65 (embedded in the tape 65). Tape may be wound so that a part or all of the component unit 60 is exposed.

  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.

(Operation and effect of this embodiment)
According to the present embodiment, the locking portion 62 of the electronic component unit 60 is locked to one or a plurality of electric wires 17 in the temporarily wound temporary wire bundle 66, so that the tape 67 is wound from this temporarily wound state to wire. It becomes possible to improve workability at the time of constructing the harness 13.

  Moreover, according to this embodiment, the latching | locking part 62 consists of a pair of latching pieces 63 and 63 which distribute | arrange and latch the 1 or several electric wire 17 in between. If it does in this way, it will become possible to comprise the latching | locking part 62 of the electronic component unit 60 with a simple structure.

  Further, according to the present embodiment, the pair of locking pieces 63, 63 are formed so that the distance between the pair of locking pieces 63, 63 at the tip portion is narrowed. If it does in this way, it will become easy to hold one or a plurality of electric wires 17 inside a pair of locking pieces 63 and 63.

  Further, according to the present embodiment, the case 61 of the electronic component unit 60 is embedded in the tape 67. Thereby, since the electronic component unit 60 is protected by the tape 67, collision with a foreign object is suppressed.

<Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIGS. As shown in FIG. 17, on the outer surface of the case 71 of the electronic component unit 70 according to the present embodiment, on the outer surface of the temporary electric wire bundle 66 in which a plurality of electric wires 17 are temporarily wound by a tape 65 (an example of a temporary binding member). A concave surface 72 that abuts is formed. The concave surface 72 is formed on the outer surface of the side wall facing the first surface 26 of the circuit board 24 among the four side walls of the case 71. In other words, the concave surface 72 is formed on the side wall disposed at a position away from the circuit board 24.

  The concave surface 72 is formed in an arc shape. The curvature of the concave surface 72 can be appropriately set according to the outer shape of the temporary electric wire bundle 66 to be fitted. For example, when the diameter of the temporary electric wire bundle 66 is increased when the number of the electric wires 17 is increased and the diameter of the electric wire 17 is increased, the concave surface 72 is made the outer surface of the temporary electric wire bundle 66 by reducing the curvature of the concave surface 72. Thus, the outer surface of the temporary electric wire bundle 66 can be easily fitted inside the concave surface 72. On the other hand, for example, when the diameter of the temporary wire bundle 66 is reduced by decreasing the number of the wires 17 and reducing the diameter of the wires 17, the curvature of the concave surface 72 may be increased.

(Attaching method of electronic component unit 70)
As shown in FIG. 18, a plurality of electric wires 17 are bundled, and a tape 65 (an example of a temporary bundling member) is wound a plurality of times at predetermined intervals in the extending direction to form a temporary electric wire bundle 66 in a temporarily wound state. The method of temporarily winding the tape 65 is not limited to this. For example, the temporary wire bundle 66 in a temporarily wound state may be formed by winding the tape 65 spirally (without dividing) so that the electric wire 17 is exposed.

  Next, as shown in FIG. 19, the concave surface 72 of the electronic component unit 70 attached to the terminal portion of the electric wire 17 is brought into contact with the outer peripheral surface of the temporary electric wire bundle 66 in the temporarily wound state (the outer peripheral surface where the electric wire 17 is exposed). Then, the electronic component unit 70 is wound with the tape 67 (an example of a binding member) together with the temporary electric wire bundle 66 to form the wire bundle 68 in the main winding state. Thereby, the electronic component unit 70 is fixed to the wire harness 13.

  In the above configuration, the tape 67 is directly wound around the electronic component unit 70 and fixed to the wire harness 13. However, the present invention is not limited thereto, and the electric wire 17 (terminal portion thereof) connected to the electronic component unit 70 is connected. The electronic component unit 70 may be indirectly fixed to the wire harness 13 via the electric wire 17 instead of being directly wound around the tape 67 and the electronic component unit 70 being fixed.

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

(Operation and effect of the embodiment)
In general, the outer peripheral surface of the wire harness 13 often has a convex portion. According to the present embodiment, by protruding at least a part of the outer peripheral surface of the wire harness 13 into the concave surface 72, the overhang of the electronic component unit 70 from the wire harness 13 can be suppressed. Thereby, the wire harness system 11 can be reduced in size as a whole.

<Embodiment 4>
Next, a fourth embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 20 and 21, a case 81 of the electronic component unit 80 according to the present embodiment is formed with a portion 82 to be wound around the wire bundle 18 by the tape 19. The wound portion 82 is formed to extend from one side wall of the case 81 in the direction opposite to the opening direction of the case 81 (backward). The wound portion 82 has a rectangular plate shape, and includes a plate-like portion 83, a holding protrusion 84 that is provided at the tip of the plate-like portion 83, protrudes on the opposite side of the wire bundle 18, and holds the tape 19. Is provided.

  The holding projection 84 is formed over the entire width of the tip of the wound portion 82, and the protruding dimension is equal to or greater than the thickness dimension of the tape 19. When a plurality of tapes 19 are stacked and wound, the protruding dimension of the holding protrusion 84 may be equal to or greater than the thickness of the stacked tapes 19. The tape 19 has an adhesive applied on one surface, and various known tapes can be used.

(Attaching method of electronic component unit 80)
As shown in FIG. 22, the extending direction of the wound portion 82 of the electronic component unit 80 is a direction along the extending direction of the wire bundle 18, and the wound portion 82 is brought into contact with the outer surface of the wire bundle 18. The unit 80 is placed on the wire bundle 18. Then, the wound portion 82 is wound with the tape 19 together with the wire bundle 18. This winding may be performed once or multiple times.

  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.

(Operation and effect of this embodiment)
Since the wound portion 82 is attached to the wire harness 13 by winding the wound portion 82 together with the wire bundle 18 with the tape 19, the electronic component unit 80 is attached to the wire harness 13 with a simple configuration. Can be installed. For example, even when the wire harness 13 has a large diameter, if the tape 19 is lengthened, the electronic component unit 80 can be attached. Therefore, it becomes possible to provide versatility while simplifying the configuration of the electronic component unit 80.

  Further, according to the present embodiment, the wound portion 82 is plate-shaped and extends in a direction along the extending direction of the wire bundle 18. In this way, the electronic component unit 80 can be disposed along the wire harness 13 while simplifying the configuration of the wound portion 82.

  Further, according to the present embodiment, the wound portion 82 includes the holding protrusion 84 that protrudes toward the side opposite to the wire bundle 18 and holds the tape 19. In this way, it is possible to prevent the tape 19 from being detached from the wound portion 82 with a simple configuration.

<Embodiment 5>
Next, Embodiment 5 of the present invention will be described with reference to FIGS. As shown in FIG. 23, an attachment portion 92 attached to the vehicle 10 is formed integrally with the case 91 on the side wall of the case 91 of the electronic component unit 90 according to the present embodiment.

  As shown in FIG. 24, a receiving portion 93 is formed in the vehicle 10 at a position where the electronic component unit 90 is attached. The receiving portion 93 is plate-shaped and protrudes in a bowl shape on the inner wall of the vehicle 10 (for example, under the floor of the vehicle 10) to which the electronic component unit 90 is attached. As shown in FIG. 25, the receiving portion 93 includes a pair of left and right base portions 94 protruding in a direction orthogonal to the surface of the inner wall of the vehicle 10, and rearward from the distal end portion of each base portion 94 (right side in FIG. 25). And extending portions 95 connected to each other in a U-shape. The extending portion 95 is plate-shaped and extends parallel to the surface of the inner wall of the vehicle 10.

  As shown in FIG. 26, the fitting portion 92 is formed with a fitting portion 96 into which the receiving portion 93 is fitted. The insertion portion 96 has a recessed insertion hole 97 into which the extension portion 95 can be inserted. As shown in FIG. 23, a pair of side walls 98 and 98 for guiding the extension portion 95 inward, An outer wall 99 that connects the pair of side walls 98, 98 is provided on the outer surface side of the extending portion 95. The pair of side walls 98, 98 extend along the side wall of the case 91 in the front-rear direction (left-right direction in FIG. 23).

  The outer wall 99 is plate-shaped and has a T-shape, and includes a connecting portion 100 that connects the pair of side walls 98 and 98, and a locking portion that extends forward from the connecting portion 100 and locks to the receiving portion 93. 101. The locking part 101 is locked to the extension part 95.

  Between the rear end portions of the pair of side walls 98, 98 (opening portion on the rear side of the insertion hole 97), the insertion position of the receiving portion 93 is positioned by abutting against the receiving portion 93 fitted in the attached portion 92. A front stop 103 is provided in a protruding manner. The front stop 103 is provided in a pair of left and right, and has a rectangular shape that is long in the left-right direction.

(Attaching method of electronic component unit 90)
A wire bundle 18 is formed by winding a tape 19 a plurality of times at predetermined intervals in the extending direction of a wire bundle 18 configured by bundling a plurality of wires 17. At this time, the electronic component unit 90 at the end of the electric wire 17 constituting the electric wire bundle 18 is branched from the wire harness 13 without winding the tape 19.

  Next, the electronic component unit 90 is grasped, and the fitting portion 96 of the attached portion 92 is fitted into the receiving portion 93 of the vehicle 10. When the receiving portion 93 is fitted to a depth where the receiving portion 93 comes into contact with the front stop portion 103, the locking portion 101 is locked to the extension portion 95, so that the holding portion 93 is held in the normal position in a locking state. Thereby, the electronic component unit 90 is attached to the vehicle 10.

  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.

(Operation and effect of this embodiment)
According to the present embodiment, it is possible to suppress the electronic component unit 90 from being affected by the heat and vibration of the electric wire 17 by attaching the electronic component unit 90 to the vehicle 10.

  Further, according to the present embodiment, the electronic component unit 90 includes the attached portion 92 that is attached to the vehicle 10 in a locked state. In this way, it is not necessary to use a separate member for mounting the electronic component unit 90, so that the mounting operation of the electronic component unit 90 to the vehicle 10 can be facilitated.

  Moreover, according to this embodiment, the vehicle 10 is provided with the plate-shaped receiving part 93, and the to-be-attached part 92 is provided with the insertion part 96 in which the receiving part 93 is inserted. In this way, the electronic component unit 90 can be reliably attached to a predetermined position of the vehicle 10.

<Embodiment 6>
Next, a sixth embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 28 to 30, the electronic component unit 110 according to the present embodiment is configured to be attached to the attachment portion 113 of the vehicle 10 by providing an attachment portion 112 that can be elastically deformed on the side wall of the case 111. is there.

  The vehicle 10 includes an attachment portion 113 to which the attachment portion 112 is attached on a route on which the wire harness 13 is routed. An attachment hole 114 is formed in the attachment portion 113. The shape of the attachment hole 114 is a perfect circle shape, but is not limited thereto, and may be, for example, an oval shape or a rectangular shape.

  The mounted portion 112 includes a shaft portion 115 protruding from the side wall of the case 111 and a pair of elastic locking portions 116 that are elastically deformed and locked to the mounting portion 113.

  The shaft portion 115 has a slightly thick plate shape, extends in a direction orthogonal to (intersects) the pair of elastic locking portions 116, and an end surface 117 in a direction orthogonal to the pair of elastic locking portions 116. Is slightly rounded. A rib 118 projects from the end surface 117 of the shaft portion 115 in a direction along the circumferential direction of the attached portion 112.

  The pair of elastic locking portions 116 are symmetrical with respect to the shaft portion 115, are folded back from the tip portion of the shaft portion 115, and extend from the tip portion of the shaft portion 115 in a direction away from each other in an inclined manner. ing. The pair of elastic locking portions 116 includes an elastic portion 119 that extends in an inclined manner, and an abutting portion 120 that is provided at the distal end portion of the elastic portion 119 and abuts on the inner periphery of the mounting hole 114. The distal end portion of the elastic portion 119 and the contact portion 120 are locked near the hole edge of the attachment hole 114.

  The elastic part 119 is slightly rounded on the outer surface side, and has a plate shape having a thickness that can be bent and deformed. When the pair of elastic locking portions 116 are inserted into the mounting holes 114, they are deformed by bending in a direction in which the diameter between the pair of elastic locking portions 116 abuts against the inner wall of the mounting holes 114 and passes through the mounting holes 114. Elastic recovery is performed in the direction in which the diameter between the pair of elastic locking portions 116 increases.

  When attaching the electronic component unit 110 to the vehicle 10, the electronic component unit 110 is grasped and the attached portion 112 is inserted through the attachment hole 114. When the elastic locking portion 116 passes through the mounting hole 114 and is restored and deformed, the elastic locking portion 116 is locked to the surface of the mounting portion 113 opposite to the case 111 side. As a result, the electronic component unit 110 is attached to the attachment portion 113 of the vehicle 10.

  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.

(Operation and effect of this embodiment)
According to this embodiment, the electronic component unit 110 can be reliably attached to a predetermined position of the vehicle 10.

  Further, the vehicle 10 includes an attachment portion 113 having an attachment hole 114, and the attached portion 112 abuts against the hole wall of the attachment hole 114 when the electronic component unit 110 is attached, and is elastically deformed. Since the elastic locking portion 116 that is elastically restored and locked to the mounting portion 113 is provided, the mounting operation of the electronic component unit 110 can be facilitated.

<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) In this embodiment, the semiconductor switching element 22 is used as an electronic component. However, the present invention is not limited to this, and the electronic component may be a resistor, a capacitor, a coil, a mechanical relay, a board-mounted fuse, or the like. Any electronic component can be used accordingly.

  (2) In the present embodiment, the conductive path is formed on the circuit board 24 by the printed wiring technique. However, the present invention is not limited to this, and the conductive path is formed by a bus bar formed by pressing a metal plate material into a predetermined shape. May be.

  (3) In the present embodiment, the circuit board 24 is accommodated in the case 23, but the present invention is not limited to this, and the case 23 may be omitted. A cover that covers at least the semiconductor switching element 22 may be attached to the circuit board 24. Further, a synthetic resin may be applied to the circuit board 24. Further, the circuit board 24 on which the semiconductor switching element 22 is mounted may be molded with a synthetic resin.

  (4) The connector housing 25 and the case 23 may be assembled with a known lock structure that is elastically engaged with each other.

(5) In the present embodiment, the terminal 29 is bent at a substantially right angle. However, the present invention is not limited to this, and the terminal 29 may not be bent as a reference example . That is, the terminal 29 may protrude rearward from the back wall 44 of the connector housing 25 and be electrically connected to the through hole 47 of the circuit board 24. In other words, the plate surface of the circuit board 24 may be arranged so as to intersect the opening direction of the opening 52 of the connector housing 25.

  (6) The circuit board 24 and the connector housing 25 may be screwed. Moreover, it is good also as a structure attached by arbitrary attachment means as needed.

  (7) The mating connector may be fitted into the cavity 28 of the connector housing 25. Moreover, it is good also as a structure by which a fuse is fitted. Moreover, it is good also as a structure by which a plug-in relay is fitted. Thus, any member can be appropriately selected as the counterpart member as required.

  (8) The female terminal 42 is not limited to being connected to the electric wire 17 and may be connected to the bus bar.

  (9) The electronic component unit 21 is configured to be attached to the wire bundle 18, but is not limited thereto, and may be configured to be disposed in a junction box, a relay box, or an ECU.

  (10) The case 23 has a rectangular tube shape, but is not limited thereto, and may have a flat shape, a cylindrical shape, or a polygonal shape such as a triangular shape, a pentagonal shape, or a hexagonal shape in cross section. A cylindrical shape may be sufficient.

  (11) In the present embodiment, the connector housing 25 has a structure in which a plurality of cavities 28 are formed. However, the present invention is not limited thereto, and the cavity 28 may be formed in a horizontal line.

  (12) The manual switch 38 is configured to be disposed on the instrument panel 37. However, the manual switch 38 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 electronic component unit 21 from electronic control units, such as body ECU.

  (13) In the present embodiment, a plurality of electronic component units 21 are arranged in the wire harness 13. However, the present invention is not limited to this, and one electronic component unit 21 is included in the wire bundle 18 in the wire harness 13. It may be attached.

  (14) The binding member may be a binding band. The binding band may be made of synthetic resin or metal. As the binding band, a band having a known shape used for bundling the plurality of electric wires 17 can be used.

  (15) In this embodiment, the unit side load 14 is an individual load and the box side load 15 is a common load. However, the present invention is not limited to this, and the unit side load 14 is a common load and the box side load 15 is an individual load. It is good. Further, the unit side load 14 may be a high calorific value load having a relatively large calorific value, and the box side load 15 may be a low calorific value load having a relatively small calorific value. The unit side load 14 and the box side load 15 can be appropriately selected from arbitrary loads.

  (16) The board locking portion 48 may be configured to be locked to the side end portion of the circuit board 24, or may be configured to be locked to both the front end portion and the side end portion of the circuit board 24.

  (17) A synthetic resin or metal rod-shaped member (branch) may be provided along the wire harness 13 and the electronic component unit 21 may be attached to the rod-shaped member.

  (18) The wire harness 13 may include a protective member such as a rubber tube or a synthetic resin corrugated tube. For example, a temporarily wound temporary electric wire bundle may be inserted into a protective member such as a corrugated tube and a binding member such as a tape may be wound around the permanently wound state.

  (19) The electronic component unit 21 can be disposed at any location in the vehicle 10 such as the engine room 30, the trunk room, or the inside of the instrument panel 37.

  (20) In the present embodiment, the locking portion 62 is a pair of locking pieces 63, 63, but is not limited to this, and may have any shape as necessary. For example, the locking portion 62 may protrude from the case 61 and be formed in a C shape so as to be fitted around the temporary wire bundle 66.

  (21) In the present embodiment, the concave surface 72 is formed on one side wall of the case 71. However, the present invention is not limited to this, and the concave surface 72 has two, three, or four side walls of the case 71. It is good also as a structure formed in.

  (22) In the present embodiment, the shape of the wound portion 82 is a flat plate shape, but is not limited thereto. For example, the surface of the wound portion 82 on the side of the wire bundle 18 may be curved so as to follow the shape of the outer surface of the wire bundle 18. Further, not only the surface of the wound portion 82 on the side of the electric wire bundle 18 but also the whole wound portion 82 may have a curved plate shape.

10: Vehicle 11: Wire harness system 13: Wire harness 14: Unit side load (load)
17: Electric wire 18, 68: Electric wire bundle 19, 67: Tape (binding member)
21, 60, 70, 80, 90, 110: Electronic component unit 22: Semiconductor switching element (electronic component)
23, 61, 71, 81, 91, 111: Case 24: Circuit board 25: Connector housing 26: First surface 27: Second surface 28: Cavity 29: Terminal 42: Female terminal (mating terminal)
43: Lance 44: Back wall 48: Substrate locking part 50: Substrate holding groove 52: Opening part 62: Locking part 63: Locking piece 65: Tape (temporary binding member)
66: Temporary wire bundle 72: Concave surface 82: Wound portion 92, 112: Attached portion

Claims (12)

A circuit board;
A connector housing at least partially overlapping the circuit board;
Of the circuit board, the connector housing is mounted in an area where the connector housing overlaps the circuit board, and,
The connector housing includes a cavity, and a terminal passes through the back wall of the cavity, and one end of the terminal is disposed in the cavity and the other end of the terminal is the Is electrically connected to the circuit board,
The terminal is bent down on the protruding portion behind said circuit board side of the connector housing in a state of penetrating the back wall, the said connector housing substrate latching for engaging an end portion of the circuit board And the direction in which one end of the terminal is penetrated by the back wall and the direction in which the end of the circuit board is locked to the board locking portion are substantially parallel to each other. An electronic component unit. The circuit board has a first surface and a second surface located on the opposite side of the first surface;
The electronic component unit according to claim 1, wherein the connector housing is disposed on the first surface, and the electronic component is disposed on the second surface. A counterpart terminal that is electrically connected to the terminal is accommodated inside the cavity, and a lance that protrudes inward and elastically deforms is formed inside the cavity, The electronic component unit according to claim 1, wherein the counterpart terminal is held inside the cavity by engaging with the lance. The circuit board is accommodated in a case in which an opening is formed, and a substrate holding groove for holding an edge of the circuit board is formed on an inner wall of the case. Item 4. The electronic component unit according to any one of Items 3 to 3. The case is adapted to be attached to an electric wire bundle in which a plurality of electric wires are bundled by a binding member,
The electronic component unit according to claim 4, wherein a wound portion that is wound together with the wire bundle by the binding member is formed in the case. 5. The electronic component unit according to claim 4, wherein the case includes an engaging portion that engages with a temporary electric wire bundle in which a plurality of electric wires are temporarily wound by a temporary binding member. The electronic component unit according to claim 6, wherein the locking portion includes a pair of locking pieces that sandwich one or more of the plurality of electric wires. 5. The electronic component unit according to claim 4, wherein the case includes a concave surface that comes into contact with an outer surface of a temporary electric wire bundle in which a plurality of electric wires are temporarily wound by a temporary binding member. The wire bundle is formed in a state where the binding member is wound around the temporary wire bundle, and the case is embedded in the binding member in a state where the binding member is wound. The electronic component unit according to claim 8. The electronic component unit according to claim 4, wherein a mounting portion to be attached to the vehicle is formed in the case. The electronic component unit according to any one of claims 1 to 10, wherein the electronic component is a switching element that performs energization or disconnection on a load. A wire harness system mounted on a vehicle,
A wire harness having an electric wire bundle composed of a plurality of electric wires;
The wire harness system provided with the electronic component unit as described in any one of Claims 1 thru | or 11 attached to the said wire harness directly or indirectly.

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