JP2019175932A - Wiring harness - Google Patents

Abstract

To provide a wiring harness capable of preventing misalignment between an individual shield member and a collective shield member from occurring.SOLUTION: A wiring harness includes: a plurality of cylindrical members 50 through which a plurality of electric wires 10 are inserted and which are interposed between the outer peripheral surfaces of the electric wires 10 and the inner peripheral surface of an individual shield member 31; and a tightening member 60 that tightens a connection portion 32c connected by covering each individual shield member 31 of the collective shield member 32 against the outer peripheral surface of a cylindrical member 50. The outer peripheral surface of the cylindrical member 50 is provided with a groove 51 extending along the circumferential direction of the cylindrical member 50 over the whole circumference. The tightening member 60 tightens the individual shield member 31 and the collective shield member 32 against an undersurface 52 of the groove 51.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a wire harness.

  2. Description of the Related Art Conventionally, in a wire harness for a vehicle, for example, an electric wire is covered with a shield member in order to shield electromagnetic noise generated with energization of the electric wire. The shield member is formed of a braided wire in which conductive strands such as an aluminum alloy are knitted into a cylindrical shape, and has flexibility. As such a shield member, an individual shield member that individually covers the outer periphery of the insulation coating of the electric wire with the shield member is known (see, for example, Patent Document 1). Further, a collective shield member that covers a plurality of electric wires together with a single shield member is known (see, for example, Patent Document 2). Note that the end portions of the individual shield member and the collective shield member are electrically connected to the connector of the wire harness. Then, the individual shield member and the collective shield member are grounded by connecting the connector to the housing of the vehicle equipment.

JP 2010-165512 A JP 2010-1113910 A

  By the way, when the individual shield member and the collective shield member are provided at different positions in the length direction of the wire harness, it is necessary to electrically connect the individual shield member and the collective shield member.

  Therefore, the inventors of the present application have studied the following connection structure for connecting the individual shield member and the collective shield member. That is, as shown in FIG. 5, in the above connection structure, a metal cylindrical member 520 is provided between the insulating coating 512 of the electric wire 510 and the individual shield member 530. Note that the insulating coating 512 covers the outer periphery of the core wire 511 of the electric wire 510. A portion of the individual shield member 530 located on the outer periphery of the cylindrical member 520 is covered with the collective shield member 540. The collective shield member 540 and the individual shield member 530 are fastened to the cylindrical member 520 by the band member 550 from the outer peripheral side. Thereby, the individual shield member 530 and the collective shield member 540 are electrically connected.

  However, in such a connection structure, there is a gap 560 where the collective shield member 540 and the individual shield member 530 do not contact each other. Therefore, the tightening force by the band member 550 is likely to be insufficient, and there is a possibility that a positional deviation in the length direction between the individual shield member 530 and the collective shield member 540 may occur.

  The objective of this invention is providing the wire harness which can suppress generation | occurrence | production of position shift with an individual shield member and a package shield member.

  A wire harness for achieving the above object comprises a plurality of individual shields comprising a plurality of electric wires and a braided wire in which conductive strands are knitted into a cylindrical shape, and electromagnetically shielding the plurality of the electric wires individually by covering them A member, a braided wire in which conductive strands are knitted into a cylindrical shape, and a plurality of the wires are inserted through the collective shield member that electromagnetically shields by covering the plurality of wires together, and the wires A plurality of cylindrical members interposed between the outer peripheral surface of the individual shield member and the inner peripheral surface of the individual shield member, and a portion of the collective shield member that covers each of the individual shield members is defined with respect to the outer peripheral surface of the cylindrical member. A tightening member that is tightened in a step, and a stepped portion that extends along a circumferential direction of the tubular member is provided on an outer peripheral surface of the tubular member, and the tightening member includes the individual shield. Parts and the batch Tightening the shield member with respect to the bottom surface of the stepped portion.

  According to this configuration, a portion of the collective shield member that covers each individual shield member is fastened to the outer peripheral surface of each cylindrical member by the fastening member. At this time, the individual shield members and the collective shield member are tightened against the bottom surface of the stepped portion, so that they bite into the stepped portion of each cylindrical member. For this reason, generation | occurrence | production of the position shift in the length direction of the wire harness of each individual shield member and a package shield member can be suppressed.

Moreover, since the cylindrical member is interposed between the electric wire and the individual shield member, the electric wire can be prevented from being deformed when being tightened by the tightening member.
The said wire harness WHEREIN: It is preferable that the groove part which has the said level | step-difference part is extended along the circumferential direction of the said cylindrical member in the outer peripheral surface of the said cylindrical member.

  According to this configuration, since the step portions are formed on both sides in the width direction of the groove portion, it is possible to suppress the positional deviation between each individual shield member and the collective shield member in both directions in the length direction of the wire harness.

The said wire harness WHEREIN: It is preferable that the said groove part is provided over the perimeter of the outer peripheral surface of the said cylindrical member.
When the groove portion is provided in a part of the circumferential direction of the cylindrical member, the circumferential direction of the cylindrical member with respect to the individual shield member and the collective shield member in order to bite the individual shield member and the collective shield member into the groove portion. It is necessary to perform positioning in

  In this respect, according to the above configuration, since the groove portion is provided over the entire circumference of the outer peripheral surface of the cylindrical member, positioning in the circumferential direction of the cylindrical member as described above becomes unnecessary. Moreover, a cylindrical member can be formed easily. Therefore, the wire harness can be easily manufactured.

In the wire harness, it is preferable that a protrusion is provided on at least one of the bottom surface of the groove and the inner peripheral surface of the fastening member.
According to the same configuration, when the protrusion is provided on the bottom surface of the groove, the protrusion can bite into the individual shield member or the collective shield member, thereby suppressing the positional deviation of the individual shield member or the collective shield member with respect to the cylindrical member. . Moreover, when the protrusion is provided on the inner peripheral surface of the fastening member, the protrusion can bite into the collective shield member or the individual shield member, thereby suppressing the positional deviation of the individual shield member or the collective shield member with respect to the fastening member. Therefore, it is possible to further suppress the occurrence of displacement in the length direction of the wire harness between each individual shield member and the collective shield member.

  According to this invention, generation | occurrence | production of position shift with an individual shield member and a package shield member can be suppressed.

The top view which shows the whole wire harness about one Embodiment of a wire harness. The expanded sectional view which expands and shows the A section of FIG. The expanded sectional view which expands and shows the center part of FIG. The expanded sectional view which shows the part corresponding to FIG. 3 about the example of a change of a wire harness. Sectional drawing which shows the structure of the wire harness of a reference example.

Hereinafter, an embodiment will be described with reference to FIGS.
The wire harness of the present embodiment is routed on a route including the under floor of a vehicle such as a hybrid vehicle or an electric vehicle, and electrically connects a plurality of devices.

  As shown in FIG.1 and FIG.2, a wire harness is provided in the some electric wire 10 and the one end side (left end side of FIG. 1) of each electric wire 10, and several electric wires for attaching each electric wire 10 to an apparatus separately. An individual connector 21 and a single collective connector 22 provided on the other end side (the right end side in FIG. 1) of each electric wire 10 for attaching the electric wires 10 to a device collectively are provided.

  As shown on the right side of FIG. 2, the electric wire 10 includes a core wire 11 and a cylindrical insulating coating 12 that covers the outer periphery of the core wire 11. The core wire 11 is a stranded wire formed by twisting together a plurality of metal strands made of, for example, a copper alloy. The insulating coating 12 is formed by extruding an insulating material such as polyvinyl chloride (PVC), for example.

<Individual shield member 31>
As shown in FIG. 2, the wire harness is provided with a plurality of individual shield members 31 that electromagnetically shield by individually covering the plurality of electric wires 10. The individual shield member 31 is formed of a braided wire in which conductive strands made of, for example, an aluminum alloy are knitted into a cylindrical shape, and has flexibility. One end of the individual shield member 31 is electrically connected to the individual connector 21. The other end 31 b of the individual shield member 31 extends to a middle portion in the length direction of the electric wire 10.

  Each electric wire 10 is provided with a sheath 13 that individually covers the individual shield member 31. The sheath 13 is made of an insulating material such as polyvinyl chloride (PVC). One end of the sheath 13 is connected to the individual connector 21. The other end 13 b of the sheath 13 extends to a middle portion in the length direction of the electric wire 10.

The sheath 13 is covered with a cylindrical first exterior member 41 having flexibility. The first exterior member 41 of the present embodiment is a corrugated tubular corrugated tube.
The other end 31 b of the individual shield member 31 is exposed from the other end 13 b of the sheath 13 and the end of the first exterior member 41.

<Batch shield member 32>
As shown in FIGS. 1 and 2, the wire harness is provided with one collective shield member 32 that electromagnetically shields the plurality of electric wires 10 by covering them together. The collective shield member 32 is made of, for example, a braided wire in which conductive strands made of an aluminum alloy or the like are knitted into a cylindrical shape, and has flexibility. One end 32a of the collective shield member 32 is electrically connected to the collective connector 22 (see FIG. 1). Further, the other end portion 32 b of the collective shield member 32 extends to an intermediate portion in the length direction of the electric wire 10.

  The collective shield member 32 is covered with a cylindrical second exterior member 42 having flexibility. The second exterior member 42 of the present embodiment is a corrugated tubular corrugated tube. However, the outer diameter and inner diameter of the second exterior member 42 are smaller than the outer diameter and inner diameter of the first exterior member 41, respectively.

The other end 32 b of the collective shield member 32 is exposed from the end of the second exterior member 42.
As shown in FIGS. 2 and 3, the portion of the collective shield member 32 exposed from the second exterior member 42 covers the portion of each individual shield member 31 exposed from the sheath 13. Hereinafter, a portion of the collective shield member 32 that is electrically connected to each individual shield member 31 by covering each individual shield member 31 is referred to as a connection portion 32c.

  Here, the other end 31 b of each individual shield member 31 is located inside the second exterior member 42. The other end 32 b of the collective shield member 32 is located inside the first exterior member 41.

<Cylindrical member 50>
Between the outer peripheral surface of each electric wire 10 and the inner peripheral surface of each individual shield member 31, a cylindrical tubular member 50 through which each electric wire 10 is inserted is interposed. Each cylindrical member 50 is provided at a position corresponding to the connection portion 32 c of the collective shield member 32 in the length direction of the electric wires 10. In addition, it is preferable that the cylindrical member 50 of this embodiment is a metal material which has rigidity, for example, is formed with the brass. In the following description, the circumferential direction of the tubular member 50 is simply referred to as the circumferential direction.

  As shown in FIG. 3, a groove portion 51 extending along the circumferential direction is provided on the outer peripheral surface of each cylindrical member 50 over the entire circumference. That is, on the outer peripheral surface of the cylindrical member 50, a pair of stepped portions 53 extending along the circumferential direction is provided between both end portions of the outer peripheral surface and the bottom surface 52 of the groove portion 51.

<Tightening member 60>
The connection portion 32 c of the collective shield member 32 is provided with a fastening member 60 that tightens the connection portion 32 c against the bottom surface 52 of the groove portion 51 of each cylindrical member 50. The fastening member 60 is, for example, a known binding band made of a resin material.

Here, the width W1 of each groove part 51 is made larger than the width W2 of the fastening member 60 (W1> W2).
The operation and effect of this embodiment will be described.

  (1) Among the plurality of cylindrical members 50 and the collective shield member 32, the wire harness is inserted between the outer peripheral surface of the electric wire 10 and the inner peripheral surface of the individual shield member 31. A fastening member 60 is provided for fastening the connection portion 32 c connected by covering each individual shield member 31 to the outer peripheral surface of the tubular member 50. On the outer peripheral surface of the cylindrical member 50, a groove portion 51 extending along the circumferential direction of the cylindrical member 50 is provided over the entire circumference. The tightening member 60 tightens the individual shield member 31 and the collective shield member 32 against the bottom surface 52 of the groove 51.

  According to such a configuration, the connection portion 32 c is fastened to the outer peripheral surface of each tubular member 50 by the fastening member 60. At this time, each individual shield member 31 and the collective shield member 32 bend, and thus bite into the groove portion 51 (stepped portion 53) of each cylindrical member 50. Here, since the step part 53 is formed in the both sides of the width direction of the groove part 51, position shift with each individual shield member 31 and the collective shield member 32 can be suppressed in both directions of the length direction of a wire harness.

  By the way, when the groove part 51 is provided in a part of the circumferential direction of the cylindrical member 50, the individual shield member 31 and the collective shield member 32 are used to bite the individual shield member 31 and the collective shield member 32 into the groove part 51. However, it is necessary to position the cylindrical member 50 in the circumferential direction.

  In this regard, according to the above configuration, since the groove portion 51 is provided over the entire circumference of the outer peripheral surface of the cylindrical member 50, the positioning of the cylindrical member 50 in the circumferential direction as described above becomes unnecessary. Therefore, the assembly workability of the wire harness can be improved. Moreover, since the cylindrical member 50 can be formed easily, the manufacturing cost of the cylindrical member 50 can be reduced. Therefore, the wire harness can be manufactured at low cost.

Moreover, since the cylindrical member 50 is interposed between the electric wire 10 and the individual shield member 31, it is possible to suppress the electric wire 10 from being deformed when being tightened by the tightening member 60.
(2) The other end 31 b of each individual shield member 31 is located inside the second exterior member 42. The other end 32 b of the collective shield member 32 is located inside the first exterior member 41.

  According to such a structure, the part which covers each individual shield member 31 among the collective shield members 32 can be enlarged. Thereby, the part which the collective shield member 32 and each individual shield member 31 contact can be ensured, and the reliability of the electrical connection between the collective shield member 32 and each individual shield member 31 can be improved. .

(3) The width W <b> 1 of the groove 51 is made larger than the width W <b> 2 of the fastening member 60.
According to such a configuration, each individual shield member 31 and the collective shield member 32 can easily bite into the groove portion 51. Thereby, the fastening force by the fastening member 60 can be increased. Therefore, it is possible to appropriately suppress the occurrence of misalignment between the individual shield members 31 and the collective shield member 32 in the length direction of the wire harness.

This embodiment can be implemented with the following modifications. The present embodiment and the following modifications can be implemented in combination with each other within a technically consistent range.
As shown in FIG. 4, a protrusion 154 extending along the circumferential direction can be provided on the bottom surface 152 of the groove portion 151 (stepped portion 153) of the cylindrical member 150. In this case, as shown in the figure, a plurality of protrusions 154 may be provided at intervals in the axial direction, or one protrusion 154 may be provided. As a result, the protrusion 154 bites into each individual shield member 31. Further, instead of the protrusions 154, a plurality of protrusions may be provided at intervals in the circumferential direction.

  In addition, or instead of this, a protrusion (not shown) extending along the circumferential direction on the inner peripheral surface of the tightening member 60 may be provided. In this case, a plurality of protrusions may be provided at intervals in the axial direction, or one protrusion may be provided. Thereby, the ridge bites into the collective shield member 32. Further, instead of such protrusions, a plurality of protrusions may be provided at intervals in the circumferential direction.

According to these structures, generation | occurrence | production of the position shift in the length direction of the wire harness of each individual shield member 31 and the collective shield member 32 can be suppressed further.
The other end 31 b of each individual shield member 31 may be located outside the second exterior member 42.

The other end 32 b of the collective shield member 32 may be located outside the first exterior member 41.
The space from the end portion of the first exterior member 41 to the end portion of the second exterior member 42 may be covered with a grommet or the like.

A plurality of groove portions 51 can be provided on the outer peripheral surface of the cylindrical member 50 at intervals in the axial direction.
A plurality of groove portions 51 may be provided at intervals in the circumferential direction of the cylindrical member 50.

-You may make it provide the groove part 51 in a part of circumferential direction of the cylindrical member 50. As shown in FIG.
-The groove part 51 is not limited to the groove shape extended along the circumferential direction. In addition, for example, a recess corresponding to the shape of the fastening member 60 may be used.

-Two protrusion parts can be provided on the outer peripheral surface of the cylindrical member 50 at an interval in the axial direction, and a portion between the protrusion parts can be a groove part.
-The cylindrical member 50 is not limited to a cylindrical thing, A polygonal cylindrical thing may be sufficient.

-The cylindrical member 50 is not limited to what consists of brass, may consist of other metal materials, such as an aluminum alloy, and may consist of a resin material.
A guide surface may be provided on the outer peripheral surface of both ends of the cylindrical member 50 so as to be positioned closer to the inner peripheral side toward the distal end side. The guide surface may be, for example, an inclined surface or a curved surface. According to this configuration, the cylindrical member 50 can be easily disposed between the individual shield member 31 and the electric wire 10.

-The clamping member 60 is not limited to what consists of resin materials, You may consist of other metal materials, such as an aluminum alloy.
The exterior members 41 and 42 are not limited to the bellows-shaped corrugated tube, and may be pipes.

  DESCRIPTION OF SYMBOLS 10 ... Electric wire, 11 ... Core wire, 12 ... Insulation coating, 13 ... Sheath, 13b ... Other end part, 21 ... Individual connector, 22 ... Collective connector, 31 ... Individual shield member, 31b ... Other end part, 32 ... Collective shield member 32a ... one end part, 32b ... the other end part, 32c ... connection part, 41 ... first exterior member, 42 ... second exterior member, 50 ... cylindrical member, 51 ... groove part, 52 ... bottom face, 53 ... step part, 60 ... clamping member, 150 ... cylindrical member, 151 ... groove, 152 ... bottom surface, 153 ... step, 154 ... projection, 510 ... electric wire, 511 ... core wire, 512 ... insulation coating, 520 ... cylindrical member, 530 ... individual shield member, 540 ... general shield member, 550 ... band member, 560 ... gap.

Claims (4)

Multiple wires,
A plurality of individual shield members that are electromagnetically shielded by individually covering a plurality of the electric wires, comprising a braided wire in which conductive strands are knitted into a cylindrical shape,
A batch shield member made of a braided wire in which conductive strands are knitted into a cylindrical shape, and electromagnetically shielded by covering a plurality of the wires together,
A plurality of tubular members that are respectively inserted through the plurality of electric wires and interposed between an outer peripheral surface of the electric wires and an inner peripheral surface of the individual shield member;
A tightening member that tightens a portion covering each of the individual shield members of the collective shield member with respect to an outer peripheral surface of the cylindrical member; and
On the outer peripheral surface of the cylindrical member, a step portion extending along the circumferential direction of the cylindrical member is provided,
The tightening member tightens the individual shield member and the collective shield member against the bottom surface of the stepped portion.
Wire harness. On the outer peripheral surface of the cylindrical member, a groove having the stepped portion extends along the circumferential direction of the cylindrical member.
The wire harness according to claim 1. The groove is provided over the entire circumference of the outer peripheral surface of the cylindrical member.
The wire harness according to claim 2. Protrusions are provided on at least one of the bottom surface of the groove and the inner peripheral surface of the fastening member.
The wire harness according to claim 2 or claim 3.