JP6835025B2 - Wire harness - Google Patents

Description

The present invention relates to a wire harness.

Conventionally, for example, in a wire harness for a vehicle, the electric wire is covered with a shield member in order to shield electromagnetic noise generated by energizing the electric wire. The shield member is made of a braided wire in which a conductive wire such as an aluminum alloy is woven into a tubular shape, and has flexibility. As such a shield member, an individual shield member that individually covers the outer periphery of the insulating coating of the electric wire with the shield member is known (see, for example, Patent Document 1). The outer circumference of the individual shield member described in Document 1 is covered with a sheath. Further, there is known a collective shield member that collectively covers a plurality of electric wires with one shield member (see, for example, Patent Document 2). The ends of the individual shield members and the collective shield members are electrically connected to the connectors provided at the ends of the electric wires.

JP-A-2010-165512 JP-A-2010-113910

By the way, the individual shield member and the collective shield member may be provided at different positions in the length direction of the wire harness. In this case, it is necessary to electrically connect the individual shield member and the collective shield member.

In such a connection structure, a structure is conceivable in which the exposed portion of the individual shield member exposed from the end portion of the sheath and the exposed portion of the collective shield member exposed from the end portion of the exterior member are connected. However, in this case, if rain, water, or the like adheres to the connecting portion where the exposed portions are connected to each other, the connecting portion may be corroded.

An object of the present invention is to provide a wire harness capable of suppressing corrosion of a connection portion between an individual shield member and a collective shield member.

A wire harness for achieving the above object is composed of a plurality of electric wires and a braided wire in which conductive wires are woven into a tubular shape, and a plurality of individual shields that electromagnetically shield the plurality of electric wires by individually covering them. It consists of a member, a plurality of sheaths that individually cover each of the individual shield members, and a braided wire in which conductive wires are woven into a tubular shape, and electromagnetically shields the plurality of electric wires by collectively covering them. A connecting portion in which the collective shield member, the portion of each of the individual shield members exposed from the end of the sheath, and the separation portion of the collective shield member that extends separately from each of the electric wires are electrically connected. A tubular protective member made of an elastic member that protects the connection portion by surrounding the protective member, and a first seal member provided at one end of the protective member and sealing between each of the one end and the sheath. And a second sealing member provided at the other end of the protective member and sealing between the other end, each of the insulating coatings of the plurality of electric wires, and the separating portion.

According to the same configuration, a connecting portion in which each individual shield member and a separating portion of the collective shield member are electrically connected is surrounded by a tubular protective member. Further, one end of the protective member and each sheath are sealed by the first seal member, and the other end of the protective member and the separation portion of each insulating coating and the collective shield member are sealed by the second seal member. It will be sealed. Therefore, it is possible to suppress the adhesion of water or the like to the connection portion, and it is possible to suppress the corrosion of the connection portion.

In the wire harness, the first seal member is a first plug body made of an elastic member and having a plurality of sheath insertion holes for closing the opening of the one end portion of the protective member and inserting each of the sheaths. The one end of the protective member is fastened to the first plug by the first tightening member, the second seal member is made of an elastic member, and the other end of the protective member. A second plug having a plurality of insulation coating insertion holes through which each of the insulation coatings is inserted and a separation portion insertion hole through which the separation portion is inserted, and the other end portion of the protection member. Is preferably tightened to the second plug by the second tightening member.

According to the same configuration, by tightening the protective member with respect to the first plug body by the first tightening member, the protective member and the first plug body are elastically deformed, respectively. As a result, one end of the protective member and the first plug body are sealed, and the inner peripheral surface of each sheath insertion hole of the first plug body and the outer peripheral surface of each sheath are sealed. Therefore, it is possible to seal between one end of the protective member and each sheath while using the first plug body that is separate from the protective member.

Further, according to the above configuration, by tightening the protective member with respect to the second plug body by the second tightening member, the protective member and the second plug body are elastically deformed, respectively. As a result, the other end of the protective member and the second plug body are sealed, and between the inner peripheral surface of each insulation coating insertion hole of the second plug body and the outer peripheral surface of each insulation coating, and the second. A seal is formed between the insertion hole of the separation portion of the plug body and the outer peripheral surface of the separation portion. Therefore, while using a second plug body that is separate from the protective member, it is possible to seal between the other end of the protective member and each insulating coating and separation portion.

In addition, when applying to other types of wire harnesses with different numbers of electric wires, change to the first plug body and the second plug body having the number of sheath insertion holes and insulation coating insertion holes corresponding to the number of wires. It is possible to do. Therefore, a common protective member can be used in different types of wire harnesses.

In the wire harness, the first plug body and the second plug body are provided with opening / closing portions that extend along the axial direction of the sheath insertion hole and the insulation coating insertion hole and are opened and closed with each other. It is preferable to have.

According to the same configuration, the first plug can be assembled from the outer peripheral side to the sheath of each electric wire by opening the opening / closing portion of the first plug. Further, by opening the opening / closing portion of the second plug body, the second plug body can be assembled from the outer peripheral side to the insulating coating of each electric wire and the separated portion of the collective shield member. Therefore, the wire harness can be easily manufactured.

The wire harness includes a tubular exterior member that covers the separation portion, the exterior member is inserted through the separation portion insertion hole, and the outer end portion of the protection member in the exterior member is formed. It is preferable that a third sealing member is provided which collectively surrounds each of the exterior member and the insulating coating and seals between the exterior member and the end portion.

According to the same configuration, it is possible to prevent water from entering the inside of the protective member through the gap of the separation portion of the collective shield member.

According to the present invention, it is possible to suppress corrosion of the connection portion between the individual shield member and the collective shield member.

The plan view which shows the whole wire harness about one Embodiment of a wire harness. The side view of the wire harness of the same embodiment centering on the connection part. A plan view of the wire harness of the same embodiment centered on the connection portion. FIG. 3 is a cross-sectional view taken along the line 4-4 of FIG.

Hereinafter, one embodiment will be described with reference to FIGS. 1 to 4.
The wire harness of the present embodiment is laid out on a route including under the floor of a vehicle such as a hybrid vehicle or an electric vehicle, and a plurality of devices are electrically connected to each other.

As shown in FIGS. 1 and 2, the wire harness is provided on a plurality of electric wires 10 and one end side (left end side in FIG. 1) of each electric wire 10, and a plurality of wire harnesses for individually attaching each electric wire 10 to an apparatus. It is provided with an individual connector 21 and one collective connector 22 provided on the other end side (right end side in FIG. 1) of each electric wire 10 for collectively attaching each electric wire 10 to an apparatus.

The electric wire 10 has a core wire (not shown) and a tubular insulating coating 10a that covers the outer periphery of the core wire. The core wire is, for example, a stranded wire formed by twisting a plurality of metal strands made of a copper alloy. The insulating coating 10a is formed by extrusion molding an insulating material such as polyvinyl chloride (PVC).

<Individual shield member 31>
As shown in FIGS. 2 and 3, the wire harness is provided with a plurality of individual shield members 31 that are electromagnetically shielded by individually covering the plurality of electric wires 10. The individual shield member 31 is made of a braided wire in which a conductive wire made of an aluminum alloy or the like is woven into a tubular shape, and has flexibility. One end of the individual shield member 31 is electrically connected to the individual connector 21. The other end 31b of the individual shield member 31 extends to an intermediate portion in the length direction of the electric wire 10.

Further, 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 13b of the sheath 13 extends to an intermediate portion in the length direction of the electric wire 10.

<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 wire harness by collectively covering the plurality of electric wires 10. The collective shield member 32 is made of a braided wire in which a conductive wire made of an aluminum alloy or the like is woven into a tubular shape, and has flexibility. One end 32a of the collective shield member 32 is electrically connected to the collective connector 22 (see FIG. 1).

As shown in FIGS. 2 and 3, the other end of the collective shield member 32 opposite to one end 32a is separated from each electric wire 10 by each electric wire 10 penetrating the side portion of the collective shield member 32. It is said that the separation portion 33 extends.

<First exterior member 40>
As shown in FIGS. 2 and 3, a portion of the collective shield member 32 in the length direction of the separating portion 33 is covered with a flexible first exterior member 40. The first exterior member 40 is a bellows tubular corrugated tube. A plurality of concave grooves 41 are provided on the outer peripheral surface of the first exterior member 40 at intervals along the axial direction of the first exterior member 40.

As shown in FIG. 3, the portion of the separated portion 33 of the collective shield member 32 exposed from the first exterior member 40 is overlapped with the portion of each individual shield member 31 exposed from the other end portion 13b of the sheath 13. There is. Hereinafter, the portion of each individual shield member 31 exposed from the other end 13b of the sheath 13 and the portion of the separation portion 33 of the collective shield member 32 exposed from the end of the first exterior member 40 are electrically connected. The portion is referred to as a connecting portion 34.

<Cylindrical member 50>
As shown in FIG. 3, a cylindrical tubular member 50 through which each electric wire 10 is inserted is interposed between the outer peripheral surface of each electric wire 10 and the inner peripheral surface of each individual shield member 31. Each tubular member 50 is provided at a position corresponding to the connection portion 34 of the collective shield member 32 in the length direction of the electric wire 10. The tubular member 50 of the present embodiment is made of, for example, brass.

The outer circumference of each tubular member 50 is tightened by a tightening member 59. The tightening member 59 is, for example, a well-known binding band made of a resin material.
<Protective member 60>
As shown in FIGS. 1 to 3, the connecting portion 34 is surrounded by a protective member 60 having a cylindrical shape.

As shown in FIG. 4, the protective member 60 is a substantially rectangular sheet made of an elastic member, and the edges of the short sides are thin-walled portions 61 and 62. The outer peripheral side of the thin-walled portion 61 is thinned, and the inner peripheral side of the thin-walled portion 62 is thinned. The thin-walled portion 61 and the thin-walled portion 62 are in close contact with each other, so that the thin-walled portion 61 and the thin-walled portion 62 are sealed.

As shown in FIG. 3, on the inner peripheral surfaces of one end 60a and the other end 60b of the protective member 60, a protrusion 63 extending along the circumferential direction of the protective member 60 is provided over the entire circumference. Further, recesses 64 extending along the circumferential direction of the protective member 60 are provided on the outer peripheral surfaces of the one end 60a and the other end 60b over the entire circumference.

<1st plug 71>
As shown in FIG. 3, one end 60a of the protective member 60 is provided with a first plug 71 as a first seal member that closes the opening 65 of the one end 60a.

The first plug 71 is made of an elastic member and has a sheath insertion hole 72 into which each sheath 13 of each electric wire 10 is inserted. On the inner peripheral surface of each sheath insertion hole 72, a plurality of (three in this embodiment) annular lip portions 72a that adhere to and seal the outer peripheral surface of the sheath 13 are provided at intervals in the axial direction. There is.

A groove 73 corresponding to a protrusion 63 on the one end 60a side of the protective member 60 is provided on the outer peripheral surface of the first plug 71.
As shown in FIG. 4, the first plug 71 is provided with an opening / closing portion 74 extending along the axial direction of the sheath insertion hole 72 and opening / closing each other. The first plug 71 is opened and closed with the portion 75 on the side opposite to the opening / closing portion 74 across the sheath insertion hole 72 as a fulcrum.

<First tightening member 79>
As shown in FIG. 3, a first tightening member 79 that tightens one end 60a of the protective member 60 to the first plug 71 is externally fitted in the recess 64 on the one end 60a side of the protective member 60. .. The first tightening member 79 is, for example, a well-known binding band made of a resin material. The width of the recess 64 is slightly larger than the width of the first tightening member 79.

<Second plug 81>
As shown in FIG. 3, the other end 60b of the protective member 60 is provided with a second plug 81 as a second seal member that closes the opening 66 of the other end 60b.

The second plug 81 is made of an elastic member, and the insulation coating insertion hole 82 through which each insulation coating 10a of each electric wire 10 is inserted and the separation portion insertion through which the separation portion 33 covered by the first exterior member 40 is inserted. It has a hole 86. On the inner peripheral surface of each insulation coating insertion hole 82, a plurality of (three in this embodiment) annular lip portions 82a that adhere to and seal the outer peripheral surface of the insulation coating 10a are provided at intervals in the axial direction. Has been done. Further, on the inner peripheral surface of the separation portion insertion hole 86, a plurality of (three in this embodiment) ridges 86a fitted in the concave groove 41 of the first exterior member 40 are all spaced apart from each other in the axial direction. It is provided over the circumference.

A groove 83 corresponding to a protrusion 63 on the other end 60b side of the protective member 60 is provided on the outer peripheral surface of the second plug 81.
Hereinafter, for convenience, the same portion of the structure of the second plug 81 as that of the first plug 71 will be described with reference to FIG. 4, which is a cross-sectional view of the first plug 71.

As shown in FIG. 4, the second plug 81 is provided with an opening / closing portion 84 extending along the axial direction of the insulating coating insertion hole 82 and opening and closing each other, similarly to the first plug 71. There is. The second plug 81 is opened and closed with the portion 85 on the side opposite to the opening / closing portion 84 of the insulating coating insertion hole 82 as a fulcrum.

<Second tightening member 89>
As shown in FIG. 3, a second tightening member 89 that tightens the other end 60b of the protective member 60 to the second plug 81 is externally fitted in the recess 64 on the other end 60b side of the protective member 60. ing. The second tightening member 89 is, for example, a well-known binding band made of a resin material. The width of the recess 64 is slightly larger than the width of the second tightening member 89.

<Second exterior member 90>
As shown in FIG. 1, one end 32a of the collective shield member 32 is covered with a tubular second exterior member 90. The second exterior member 90 is made of, for example, a resin tube or a metal pipe. One end 90a of the second exterior member 90 covers the end of the collective connector 22. Further, as shown in FIG. 2, the other end 90b of the second exterior member 90 extends to an intermediate portion in the length direction of the collective shield member 32.

<Third seal member 100>
As shown in FIGS. 2 and 3, a portion of the collective shield member 32 between one end 40a of the first exterior member 40 and the other end 90b of the second exterior member 90 is covered with the third seal member 100. It is sealed by being broken. The third seal member 100 is, for example, a heat shrink tube. One end 100a of the third seal member 100 covers one end 40a of the first exterior member 40 and each electric wire 10 collectively, and the other end 100b covers the other end 90b of the second exterior member 90. ..

The operation and effect of this embodiment will be described.
(1) In the wire harness, the portion of each individual shield member 31 exposed from the other end 13b of the sheath 13 and the separation portion 33 of the collective shield member 32 separated from each electric wire 10 are electrically connected. A tubular protective member 60 made of an elastic member that protects the connection portion 34 by surrounding the connection portion 34 is provided. In addition, a first seal member that closes the opening 65 of one end 60a of the protective member 60 and has a plurality of sheath insertion holes 72 through which each sheath 13 is inserted, and seals between one end 60a and each sheath 13. The first plug body 71 is provided. One end 60a of the protective member 60 is fastened to the first plug 71 by the first tightening member 79. Further, it has a plurality of insulation coating insertion holes 82 through which the insulation coatings 10a are inserted while closing the opening 66 of the other end 60b of the protective member 60, and a separation portion insertion hole 86 through which the separation portion 33 is inserted. A second plug 81 is provided as a second sealing member that seals between the end portion 60b, each insulating coating 10a, and the separating portion 33. The other end 60b of the protective member 60 is tightened to the second plug 81 by the second tightening member 89.

According to such a configuration, the connecting portion 34 in which each individual shield member 31 and the separating portion 33 of the collective shield member 32 are electrically connected is surrounded by the cylindrical protective member 60. Further, one end 60a of the protective member 60 and each sheath 13 are sealed by the first plug 71, and the other end 60b of the protective member 60, each insulating coating 10a, and the separation portion 33 of the collective shield member 32 are separated. Is sealed by the second plug 81. Therefore, it is possible to suppress the adhesion of water or the like to the connecting portion 34, and it is possible to suppress the corrosion of the connecting portion 34.

Further, according to the above configuration, by tightening the protective member 60 against the first plug 71 by the first tightening member 79, the protective member 60 and the first plug 71 are elastically deformed, respectively. As a result, the space between one end 60a of the protective member 60 and the first plug 71 is sealed, and between the inner peripheral surface of each sheath insertion hole 72 of the first plug 71 and the outer peripheral surface of each sheath 13. Is sealed. Therefore, it is possible to seal between one end 60a of the protective member 60 and each sheath 13 while using the first plug 71 that is separate from the protective member 60.

Further, according to the above configuration, by tightening the protective member 60 against the second plug 81 by the second tightening member 89, the protective member 60 and the second plug 81 are elastically deformed, respectively. As a result, the other end 60b of the protective member 60 and the second plug 81 are sealed, and the inner peripheral surface of each insulating coating insertion hole 82 of the second plug 81 and the outer peripheral surface of each insulating coating 10a are sealed. And between the separation portion insertion hole 86 of the second plug 81 and the outer peripheral surface of the separation portion 33 are sealed. Therefore, while using the second plug 81 that is separate from the protective member 60, it is possible to seal between the other end 60b of the protective member 60 and each of the insulating coatings 10a and the separating portion 33.

Further, when applied to other types of wire harnesses having different numbers of electric wires 10, the first plug body and the second plug having the number of sheath insertion holes 72 and the insulating coating insertion holes 82 corresponding to the number of electric wires 10. It is possible to change to a body. Therefore, a common protective member 60 can be used in different types of wire harnesses.

(2) The first plug 71 and the second plug 81 are provided with opening / closing portions 74, 84 extending along the axial direction of the sheath insertion hole 72 and the insulating coating insertion hole 82, respectively, and opening and closing each other. ing.

According to such a configuration, the first plug 71 can be assembled from the outer peripheral side to the sheath 13 of each electric wire 10 by opening the opening / closing portion 74 of the first plug 71. Further, by opening the opening / closing portion 84 of the second plug 81, the second plug 81 can be assembled from the outer peripheral side to the insulating coating 10a of each electric wire 10 and the separating portion 33 of the collective shield member 32. Therefore, the wire harness can be easily manufactured.

(3) A tubular first exterior member 40 that covers the separation portion 33 is provided, the first exterior member 40 is inserted through the separation portion insertion hole 86, and one end portion 40a of the first exterior member 40 is inserted. A third sealing member 100 is provided that collectively surrounds the first exterior member 40 and each insulating coating 10a and seals between the first exterior member 40 and one end portion 40a.

According to the same configuration, it is possible to prevent water from entering the inside of the protective member 60 through the gap of the separating portion 33 of the collective shield member 32.
This embodiment can be modified and implemented as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

The separation unit 33 may be in a form in which the collective shield member 32 is separated from each electric wire 10 by drawing out each electric wire 10 from a slit provided on the side portion of the collective shield member 32.
In the present embodiment, the connecting portion 34 is configured by superimposing the tip portion of the separating portion 33 on each individual shield member 31, but each individual shield is provided by providing a slit at the tip portion of the separating portion 33 and opening the slit. The connecting portion 34 may be formed by covering the member 31 with the separating portion 33.

-Each sheath 13 can be covered with an exterior member such as a corrugated tube.
-The second exterior member 90 may be omitted. In this case, for example, the collective shield member 32 is covered, and an exterior member whose one end is pulled into the inside of the vehicle is provided, and the other end of the exterior member is covered with the other end 100b of the third seal member 100 to seal the vehicle. do it.

-A tape or the like may be wrapped around the connection portion 34.
The number and shape of the protrusions 63 and the recesses 64 of the protective member 60 can be appropriately changed according to the thickness of the first plug 71 and the second plug 81.

-The first exterior member 40 may be omitted. In this case, the separation portion insertion hole 86 may be filled with a sealing material.
-The number and shape of the sheath insertion holes 72 and the insulating coating insertion holes 82 of the first plug 71 and the second plug 81 can be appropriately changed.

10 ... Electric wire, 10a ... Insulation coating, 13 ... Sheath, 13b ... The other end, 21 ... Individual connector, 22 ... Batch connector, 31 ... Individual shield member, 31b ... The other end, 32 ... Batch shield member, 32a ... One end Part, 33 ... Separation part, 34 ... Connection part, 40 ... First exterior member, 40a ... One end part, 41 ... Recessed groove, 50 ... Cylindrical member, 59 ... Tightening member, 60 ... Protective member, 60a ... One end part , 60b ... other end, 61 ... thin wall, 62 ... thin wall, 63 ... protrusion, 64 ... recess, 65 ... opening, 66 ... opening, 71 ... first plug, 72 ... sheath insertion hole, 72a ... lip Part, 73 ... Groove part, 74 ... Opening and closing part, 75 ... Part, 79 ... First tightening member, 81 ... Second plug body, 82 ... Insulation coating insertion hole, 82a ... Lip part, 83 ... Groove part, 84 ... Opening and closing part , 85 ... Part, 86 ... Separation part insertion hole, 86a ... Protrusion, 89 ... Second tightening member, 90 ... Second exterior member, 90a ... One end, 90b ... Other end, 100 ... Third seal member, 100a ... one end, 100b ... the other end.

Claims (4)

With multiple wires,
A plurality of individual shield members, which consist of a braided wire in which a conductive wire is woven into a tubular shape and electromagnetically shield the plurality of the electric wires individually.
A plurality of sheaths that individually cover each of the individual shield members,
A collective shield member consisting of a braided wire in which a conductive wire is woven into a tubular shape and electromagnetically shielded by covering a plurality of the electric wires at once,
By surrounding the connection portion in which the portion of each of the individual shield members exposed from the end of the sheath and the separation portion of the collective shield member that extends separately from each of the electric wires are electrically connected. A tubular protective member made of an elastic member that protects the connection portion, and
A first sealing member provided at one end of the protective member and sealing between each of the one end and the sheath,
A second sealing member provided at the other end of the protective member and sealing between the other end, each of the insulating coatings of the plurality of electric wires, and the separating portion is provided.
Wire harness. The first seal member is a first plug body made of an elastic member, which closes an opening at one end of the protective member and has a plurality of sheath insertion holes through which each of the sheaths is inserted, and is the protective member. The one end portion of the above is tightened to the first plug body by the first tightening member.
The second seal member is made of an elastic member, and a plurality of insulation coating insertion holes through which each of the insulation coatings is inserted while closing the opening at the other end of the protection member and separation through which the separation portion is inserted. It is a second plug body having a partial insertion hole, and the other end portion of the protective member is fastened to the second plug body by the second tightening member.
The wire harness according to claim 1. The first plug body and the second plug body are provided with opening / closing portions that extend along the axial direction of the sheath insertion hole and the insulation coating insertion hole and are opened and closed with each other.
The wire harness according to claim 2. A tubular exterior member that covers the separation portion is provided.
The exterior member is inserted through the separation portion insertion hole.
At the outer end of the protective member in the exterior member, a third sealing member is provided that collectively surrounds each of the exterior member and the insulating coating and seals between the exterior member and the end.
The wire harness according to claim 2 or 3.