JP2018120745A - Wiring harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiring harness capable of improving workability.SOLUTION: A wiring harness includes: a braided member 22; and a housing terminal part 31 having an opening 31a through which at least a part of the braided member 22 is inserted and also having conductivity housing a part of the braided member 22. The housing terminal part 31 has a bolt insertion hole 31d through which a bolt B attached to a metal piece 41 to be an attachment piece while electrically connecting the braided member 22 and the housing terminal part 31 in a state of housing the braided member 22.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a wire harness.

  Conventionally, a wire harness mounted on a vehicle is known in which an electric wire is covered with an electromagnetic shielding component as a countermeasure against electromagnetic noise (see, for example, Patent Document 1). The electromagnetic shielding component is formed by connecting ends of a metal pipe and a cylindrical braided member with a connecting member, and electromagnetically shields an electric wire inserted into a series of cylindrical bodies composed of the metal pipe and the braided member. It is like that. The metal pipe of the electromagnetic shielding component physically protects the electric wire and further maintains the electric wire in a shape along a predetermined wiring path. On the other hand, since the braided member is a flexible member formed in a cylindrical shape by braiding metal strands, it can cope with, for example, bending deformation of a portion near the end of the electric wire.

  In the wire harness of Patent Document 1, a terminal fitting is crimped to at least a part of a braided member, and the terminal fitting is fastened to a vehicle-side member with a bolt to perform grounding.

JP-A-2006-219232

  By the way, in the wire harness as described above, it is necessary to press the terminal fitting to the conductive wire such as a braided member by the barrel portion of the terminal fitting, and to fasten the terminal fitting to the vehicle side member by the bolt, which is improved in terms of workability. There is room for it.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a wire harness capable of improving workability.

  A wire harness that solves the above problems includes a conductive wire and a conductive receiving terminal portion that has an opening through which at least a portion of the conductive wire can be inserted and has a conductive property to receive a portion of the conductive wire. The accommodation terminal portion has a bolt insertion hole for inserting a bolt for attaching to the attachment object in a state where the conductive wire and the accommodation terminal portion are electrically connected in a state where the conductive wire is accommodated.

  According to this configuration, the receiving terminal portion has the bolt insertion hole through which the bolt for attaching to the mounting target in a state where the conductive wire and the receiving terminal portion are electrically connected in a state where the conductive wire is received. For this reason, in a state where the conductive wire is accommodated in the accommodating terminal portion, the conductive wire is electrically connected to the attachment object via the accommodating terminal portion by inserting the bolt into the bolt insertion hole and tightening together. it can. That is, since the connection process between the conductive wire and the storage terminal part and the connection process between the storage terminal part and the attachment target can be performed substantially simultaneously, workability can be improved.

The said wire harness WHEREIN: It is preferable that the said accommodation terminal part has a bottom part which can contact | abut the said conductive wire on the opposite side of the opening part which can penetrate the said conductive wire.
According to this structure, it can suppress that the conductive wire penetrated from an opening part is exposed from a bottom part side by providing a bottom part in an accommodation terminal part. For this reason, the ground fault by the conductive wire being exposed is suppressed.

The said wire harness WHEREIN: It is preferable that the said accommodating terminal part is provided with the extension piece extended from the edge part by the side of the said opening part.
According to this configuration, since the extension piece is provided at the end of the accommodation terminal portion on the opening side, the conductive wire can be temporarily fixed to the extension piece by tape winding or the like. It can suppress that a conductive wire falls.

In the wire harness, it is preferable that the conductive wire is a braided member obtained by braiding metal strands.
According to this configuration, since the conductive wire is a braided member obtained by braiding a metal strand, the braided member can be electrically connected by connecting the receiving terminal portion to the attachment target.

  According to the wire harness of the present invention, workability can be improved.

The schematic block diagram of the wire harness of embodiment. The perspective view which shows the state which assembled | attached the braiding member and accommodation terminal part of the wire harness of the same form. Sectional drawing which shows the state which assembled | attached the braiding member and accommodation terminal part of the wire harness of the same form. Sectional drawing for demonstrating the assembly | attachment process of the braided member and accommodation terminal part of the wire harness of the same form. Sectional drawing for demonstrating the assembly | attachment process of the braided member and accommodation terminal part of the wire harness of the same form. Sectional drawing for demonstrating the assembly | attachment process of the braided member and accommodation terminal part of the wire harness of a modification. Sectional drawing which shows the assembly | attachment state of the braiding member and accommodation terminal part of the wire harness of a modification.

  Hereinafter, an embodiment of a wire harness will be described with reference to FIGS. In each drawing, a part of the configuration may be exaggerated or simplified for convenience of explanation. Further, the dimensional ratio of each part may be different from the actual one.

  As shown in FIG. 1, the wire harness 10 of this embodiment is used to connect, for example, a high voltage battery 11 installed at the rear of the vehicle and an inverter 12 installed at the front of the vehicle in a hybrid vehicle, an electric vehicle, or the like. It is routed to pass under the floor of the vehicle. The inverter 12 is connected to a wheel driving motor (not shown) serving as a power source for vehicle travel, generates AC power from DC power of the high voltage battery 11, and supplies the AC power to the motor. The high voltage battery 11 is a battery capable of supplying a voltage of several hundred volts.

  The wire harness 10 includes two high-voltage wires 13a and 13b connected to the plus terminal and the minus terminal of the high-voltage battery 11, respectively, and a cylindrical electromagnetic shield portion 14 that collectively surrounds the high-voltage wires 13a and 13b. ing.

  Each of the high-voltage electric wires 13a and 13b is a covered electric wire in which a core wire made of a conductor is covered with an insulating coating made of an insulating material. Each of the high-voltage electric wires 13a and 13b is a non-shielded electric wire that does not have its own shield structure, and is an electric wire that can handle high voltage and large current. Each high-voltage electric wire 13a, 13b is inserted into the electromagnetic shield part 14, and one end of each high-voltage electric wire 13a, 13b is connected to the high-voltage battery 11 via the connector C1, and the other end is connected via the connector C2. The inverter 12 is connected.

  The electromagnetic shield part 14 has a long cylindrical shape as a whole. The electromagnetic shield portion 14 includes a metal pipe 21 located in the middle portion in the length direction, and a braided member 22 located in a range including both ends in the length direction other than the portion constituted by the metal pipe 21. Have.

  The metal pipe 21 is made of, for example, an aluminum-based metal material. The metal pipe 21 is routed through the underfloor of the vehicle, and is bent into a predetermined shape according to the configuration of the underfloor. The metal pipe 21 collectively shields the high-voltage electric wires 13a and 13b inserted therein, and protects the high-voltage electric wires 13a and 13b from stepping stones and the like.

  The braided member 22 is a cylindrical member configured by braiding a plurality of metal strands. The braided member 22 is connected to both ends in the length direction of the metal pipe 21 by a connecting member (not shown) such as a caulking ring, whereby the braided member 22 and the metal pipe 21 are electrically connected to each other. Has been.

  The outer periphery of each braided member 22 is surrounded by an exterior material 23 such as a corrugated tube, for example. A rubber grommet 24 that covers the outer periphery of the connection portion and prevents water from entering is attached to the connection portion between the metal pipe 21 and the braided member 22.

  Each braided member 22 collectively surrounds the outer periphery of a portion (pipe external position X) derived from the end of the metal pipe 21 in each of the high-voltage electric wires 13a and 13b. Thereby, the pipe external position X of each high voltage electric wire 13a, 13b is electromagnetically shielded by each braided member 22.

As shown in FIGS. 2 and 3, a part of the braided member 22 is pulled out from the exterior member 23, and the accommodation terminal portion 31 is attached to the end of the braided member 22 that is pulled out.
As shown in FIGS. 2 and 3, the receiving terminal portion 31 has a bottomed cylindrical shape having an opening portion 31a on one side and a bottom portion 31b on the other side, and two bolt insertion holes at radially opposing positions on the outer peripheral surface 31c. 31d is formed. The housing terminal portion 31 has a bolt insertion hole 31d through which the shaft portion B1 of the bolt B is inserted, and the bolt B is inserted through the insertion hole 41a of the metal piece 41 provided in the vehicle to be attached. The bolt B is fastened to be attached to the metal piece 41. At this time, the braided member 22, the accommodating terminal portion 31, and the metal piece 41 are electrically connected by fastening the braided member 22 accommodated in the accommodating terminal portion 31 together with the accommodating terminal portion 31 with the bolt B. It becomes. For this reason, electromagnetic shielding by the braided member 22 and the metal pipe 21 as described above is performed. Further, when the bolt B and the nut N are fastened, when the screw B is tightened so that the head B2 of the bolt B and the nut N are close to each other, the bolt insertion holes 31d of the receiving terminal portion 31 are gradually approached accordingly. In this way, the vicinity of the bolt insertion hole 31d is deformed so as to be crushed. 2 and 3 show a state after deformation.

Next, a method for assembling the braided member 22 and the accommodating terminal portion 31 of the wire harness 10 of the present embodiment will be described.
As shown in FIG. 4, the accommodation terminal part 31 before a deformation | transformation is prepared.

Next, as shown in FIG. 5, the end portion of the braided member 22 drawn into the accommodation terminal portion 31 is accommodated.
And the axial part B1 of the volt | bolt B is penetrated to each bolt penetration hole 31d of the accommodation terminal part 31 so that the accommodation terminal part 31 may be penetrated. At this time, the braided member 22 accommodated in the accommodating terminal portion 31 is penetrated by the bolt B (shaft portion B1). In this state, the nut N is screwed to the tip of the shaft portion B1 in a state where the shaft portion B1 of the bolt B is inserted into the insertion hole 41a of the metal piece 41. Then, by screwing so that the head B2 of the bolt B and the nut N are close to each other, the vicinity of the bolt insertion hole 31d is crushed so that the bolt insertion holes 31d gradually approach each other by the head B2 of the bolt B. It deforms as follows. Thereby, the assembly of the receiving terminal portion 31 and the braided member 22 as shown in FIGS. 2 and 3 is completed, and the receiving terminal portion 31, the braided member 22, and the metal piece 41 can be electrically connected.

Next, the effect of this embodiment will be described.
(1) The accommodation terminal portion 31 is a bolt for attaching to the metal piece 41 to be attached in a state where the braided member 22 and the accommodation terminal portion 31 are electrically connected in a state where the braided member 22 as a conductive wire is accommodated. A bolt insertion hole 31d for inserting B is provided. For this reason, the braided member 22 is electrically connected to the metal piece 41 via the accommodating terminal portion 31 by inserting the bolt B into the bolt insertion hole 31d and fastening together with the braided member 22 accommodated in the accommodating terminal portion 31. It can be in a connected state. That is, since the connection process between the braided member 22 and the accommodation terminal portion 31 and the connection process between the accommodation terminal portion 31 and the metal piece 41 can be performed substantially simultaneously, workability can be improved.

  (2) By providing the bottom part 31b in the accommodation terminal part 31, it can suppress that the braiding member 22 penetrated from the opening part 31a is exposed from the bottom part 31b side. For this reason, the ground fault by the braiding member 22 being exposed is suppressed.

(3) Since the braided member 22 is a braided metal wire as a conductive wire, the braided member 22 can be electrically connected by connecting the receiving terminal portion 31 to the metal piece 41.
In addition, you may change the said embodiment as follows.

  -As shown in FIG.6 and FIG.7, you may employ | adopt the structure which provides the extension piece 31e in the edge part by the side of the opening part 31a of the accommodating terminal part 31. FIG. The extending piece 31e is configured to extend in the direction opposite to the bottom 31b from the end on the opening 31a side. With such a configuration, the braided member 22 can be temporarily fixed to the extending piece 31e by tape winding or the like. That is, by temporarily fixing the braided member 22 to the extension piece 31e before fastening with the bolt B and the nut N, it is possible to prevent the braided member 22 from dropping from the accommodating terminal portion 31.

-Although the braided member was employ | adopted as a conductive wire in the said embodiment, it is not restricted to this. For example, you may employ | adopt the electric wire for supplying electric power as a conductive wire.
In the above embodiment, a configuration in which the receiving terminal portion 31 is provided with the bottom portion 31b is adopted. However, the bottom portion 31b may be omitted, and the receiving terminal portion 31 may be configured to have a cylindrical shape having openings on both sides. By setting it as such a structure, it becomes possible to insert the braiding member 22 from either of the opening parts provided in the both sides of the accommodation terminal part 31. FIG.

  In the above embodiment, the metal pipe 21 is used, but the present invention is not limited to this. For example, a configuration using a shield pipe having a structure in which a conductive shield layer is laminated or embedded in a non-metallic (for example, resin) pipe body may be adopted.

  -In the said embodiment, although applied to the wire harness 10 which connects the high voltage battery 11 and the inverter 12, you may apply to the wire harness which connects an inverter and a drive motor besides this, for example. In the case of a wire harness connecting an inverter and a drive motor, for example, since it is a three-phase AC power supply, it may be applied to all or part of the three conductive paths.

  -You may combine the said embodiment and each modification suitably.

10: Wire harness 22 ... Braided member (conductive wire)
31 ... Accommodating terminal part 31a ... Opening part 31d ... Bolt insertion hole 31e ... Extension piece 41 ... Metal piece (attachment object)
B ... Bolt

Claims (4)

A conductive wire, and an accommodating terminal portion having conductivity that has an opening through which at least a part of the conductive wire can be inserted and accommodates a part of the conductive wire;
The accommodation terminal portion has a bolt insertion hole through which a bolt for attaching to an attachment target in a state where the conductive wire and the accommodation terminal portion are electrically connected in a state where the conductive wire is accommodated. Wire harness to be used. The wire harness according to claim 1,
The said accommodation terminal part has a bottom part which can contact | abut the said conductive wire on the opposite side of the opening part which can penetrate the said conductive wire. In the wire harness according to claim 1 or 2,
The wire harness according to claim 1, wherein the accommodating terminal portion is provided with an extending piece extending from an end portion on the opening side. In the wire harness as described in any one of Claims 1-3,
The wire harness, wherein the conductive wire is a braided member obtained by braiding a metal strand.

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