JP2023171090A - wire harness - Google Patents

Abstract

To provide a wire harness capable of improving heat dissipation.SOLUTION: A wire harness 10 includes: an electric wire bundle 11 having a plurality of electric wires 21; a metal electromagnetic shielding member 12 that covers the entire outer periphery of the wire bundle 11 in a length direction X1; and a plurality of tubular exterior members 13 through which the wire bundle 11 and the electromagnetic shielding member 12 pass. The plurality of exterior members 13 are spaced apart from each other in the length direction of the wire bundle 11. The wire bundle 11 includes first portions 25a and 25b that are covered by the exterior member 13 and second portions 26a, 26b, and 26c that are not covered by the exterior member 13.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a wire harness.

Conventionally, as described in Patent Document 1, for example, there is a wire harness that includes a plurality of electric wires and one tubular exterior member through which the plurality of electric wires pass. The exterior member continuously covers the plurality of electric wires from the vicinity of one end to the vicinity of the other end in the length direction of the electric wires. The wire harness is attached to the vehicle body using a clamp attached to the exterior member.

Japanese Patent Application Publication No. 2020-107399

By the way, when an electric wire generates heat due to electricity being applied to the electric wire, heat tends to accumulate between adjacent electric wires inside the exterior member. Further, generally, a tubular exterior member is used that has an inner diameter larger than the outer diameter of a plurality of electric wires arranged inside the exterior member. Therefore, a layer of air exists between the inner circumferential surface of the exterior member and the outer circumferential surface of the electric wire. Further, the exterior member continuously covers the plurality of electric wires from the vicinity of one end to the vicinity of the other end in the length direction of the electric wires. As a result, heat tends to accumulate inside the exterior member.

An object of the present disclosure is to provide a wire harness that can improve heat dissipation.

The wire harness of the present disclosure includes an electric wire bundle including a plurality of electric wires, a metal electromagnetic shielding member that covers the entire outer periphery of the electric wire bundle in the length direction of the electric wire bundle, and the electric wire bundle and the electromagnetic shielding member. a tubular sheathing member configured to penetrate through the wire bundle, the sheathing member being one of a plurality of sheathing members, and the plurality of sheathing members being separated from each other in the length direction of the electric wire bundle. The wire bundle is a wire harness having a first portion covered with the exterior member and a second portion not covered with the exterior member.

According to the wire harness of the present disclosure, heat dissipation can be improved.

FIG. 1 is a schematic front view of the wire harness in the first embodiment. FIG. 2 is a schematic longitudinal sectional view of the wire harness shown in FIG. 1. FIG. 3 is a schematic cross-sectional view of the wire harness taken along line 3-3 in FIG. FIG. 4 is a schematic cross-sectional view of the wire harness taken along line 4-4 in FIG. FIG. 5 is a schematic front view of the wire harness in the second embodiment. FIG. 6 is a schematic cross-sectional view of the wire harness taken along line 6-6 in FIG.

[Description of embodiments of the present disclosure]
First, embodiments of the present disclosure will be listed and described.
The wire harness of the present disclosure includes:
[1] An electric wire bundle having a plurality of electric wires, a metal electromagnetic shielding member that covers the entire outer periphery of the electric wire bundle in the length direction of the electric wire bundle, and a metal electromagnetic shielding member that extends through the electric wire bundle and the electromagnetic shielding member. a tubular sheathing member configured, the sheathing member being one of a plurality of sheathing members, the plurality of sheathing members being spaced apart from each other in the length direction of the electric wire bundle, and the The wire bundle is a wire harness having a first portion covered with the exterior member and a second portion not covered with the exterior member.

According to this configuration, since the electromagnetic shielding member is made of metal, it has excellent thermal conductivity. Furthermore, the portion of the electromagnetic shielding member that covers the second portion is not covered by the exterior member and is therefore exposed to the outside of the wire harness. Therefore, when the electric wire generates heat when the electric wire is energized, the heat of the electric wire is easily dissipated to the outside of the wire harness from the portion of the electromagnetic shielding member that covers the second portion. Therefore, it is possible to suppress heat from being accumulated between adjacent electric wires in the second portion. Further, the heat generated in the first portion is transferred to a portion of the electromagnetic shielding member that covers the first portion, and then can be radiated to the outside of the wire harness from a portion of the electromagnetic shielding member that covers the second portion. Therefore, it is possible to suppress heat from accumulating inside the exterior member covering the first portion. For these reasons, the heat dissipation of the wire harness can be improved.

[2] The above [1] may further include a tape-shaped or sheet-shaped tightening member that covers the second portion from the outside of the electromagnetic shielding member and brings the electromagnetic shielding member into close contact with the second portion. .

According to this configuration, the electromagnetic shielding member is brought into close contact with the second portion covered by the tightening member. Therefore, the air layer between the second portion and the electromagnetic shielding member is reduced. Therefore, the heat of the electric wire is more easily transmitted from the second portion to the electromagnetic shielding member. Therefore, the heat of the electric wire can be easily dissipated from the portion of the electromagnetic shielding member that covers the second portion to the outside of the wire harness. As a result, the heat dissipation of the wire harness can be further improved.

[3] In the above [2], the tightening member may be an adhesive tape spirally wound around the second portion from the outside of the electromagnetic shielding member.
According to this configuration, the electromagnetic shielding member can be easily brought into close contact with the second portion by spirally wrapping the adhesive tape around the second portion from the outside of the electromagnetic shielding member.

[4] In the above [3], the adhesive tape may be spirally wound around the second portion from the outside of the electromagnetic shielding member so that a portion of the adhesive tape in the width direction overlaps.

According to this configuration, the electromagnetic shielding member can be brought into close contact with the entire second portion of the electromagnetic shielding member around which the adhesive tape is wound from the outside in the length direction of the wire bundle. Therefore, the air layer between the second portion and the electromagnetic shielding member can be reduced overall. Therefore, the heat of the electric wire is further easily transferred from the second portion to the electromagnetic shielding member. Therefore, the heat of the electric wire can be further easily dissipated from the portion of the electromagnetic shielding member that covers the second portion to the outside of the wire harness. As a result, the heat dissipation of the wire harness can be further improved.

[5] In any one of [1] to [4] above, the electromagnetic shielding member may be a braided member formed by weaving a plurality of metal wires.
According to this configuration, the electromagnetic shielding member can be easily prepared. The braided member has gaps between the braided metal wires. Therefore, it is possible to suppress heat from being trapped inside the portion of the electromagnetic shielding member that covers the second portion.

[6] Any one of [1] to [5] above, further comprising at least one clamp for attaching the wire harness to an attachment target, the clamp being attached to at least one of the plurality of exterior members. You can leave it there.

According to this configuration, by attaching the clamp to the exterior member, the wire harness can be attached to the attachment target while protecting each electric wire from the clamp.
[7] In any one of [1] to [6] above, the exterior member may be a resin corrugated tube.

According to this configuration, the exterior member can be easily prepared. The exterior member can be easily assembled to the wire bundle and the electromagnetic shielding member so that the wire bundle and the electromagnetic shielding member penetrate the exterior member.

[8] In any one of [1] to [7] above, the wire harness further includes a connector connected to an end of the wire bundle in the length direction of the wire bundle, and the second portion includes: The connector and the wire bundle may be adjacent to each other in the length direction.

According to this configuration, by connecting the connector to the mating connector of the electric device, the wire harness can be easily electrically connected to the electric device. Additionally, when the heat of the electrical device to which the connector is connected propagates to the wire harness via the connector, the propagated heat is dissipated to the outside of the wire harness from the part of the electromagnetic shielding member that covers the second part adjacent to the connector. It's easy to do.

[Details of embodiments of the present disclosure]
Specific examples of the wire harness of the present disclosure will be described below with reference to the drawings. 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 differ in each drawing. In each drawing, XYZ axes that are orthogonal to each other are illustrated. In this specification, "orthogonal" includes not only strictly orthogonal cases, but also approximately orthogonal cases within the range that provides the effects of this embodiment. Furthermore, the term "tubular" in this specification includes not only one in which the peripheral wall is continuously formed over the entire circumferential direction, but also one in which a plurality of parts are combined to form a tubular shape. "Tubular" in this specification includes those with a circular outer edge shape, polygonal outer edge shapes, and means an annular outer edge shape connected by straight lines or curves. The term "annular" as used herein also refers to any structure that forms a loop, i.e., a continuous shape with no ends, as well as an overall loop shape with a gap, such as a C-shape. Sometimes refers to structure. "Annular" shapes include, but are not limited to, circles, ovals, and polygons with pointed or rounded corners. Also, the expression "at least one" as used herein means "one or more" of the desired options. As an example, the expression "at least one" as used herein means "only one option" or "both of the two options" if the number of options is two. As another example, the expression "at least one" as used herein means "only one option" or "any combination of two or more options" if there are three or more options. means. Note that the present invention is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all changes within the meaning and scope equivalent to the scope of the claims.

(First embodiment)
A first embodiment of the wire harness will be described below.
(Overall configuration of wire harness 10)
The wire harness 10 shown in FIG. 1 electrically connects electrical devices mounted on a vehicle, for example. For example, the wire harness 10 electrically connects an inverter and a motor installed in a vehicle such as a hybrid vehicle or a fuel cell vehicle. This motor is a three-phase motor for driving wheels and serves as a power source for running the vehicle.

As shown in FIG. 2, the wire harness 10 includes a wire bundle 11, an electromagnetic shielding member 12, and a plurality of exterior members 13. Further, the wire harness 10 may include at least one clamp 14 for attaching the wire harness 10 to the attachment target 101. Note that the attachment target 101 is shown only in FIG. 4 . Further, the wire harness 10 may include connectors 15 and 16 connected to the ends of the wire bundle 11.

(Configuration of wire bundle 11)
The wire bundle 11 has a plurality of wires 21. The wire bundle 11 includes, for example, three wires 21, ie, wires 21a, 21b, and 21c. Note that the number of electric wires 21 is not limited to three, and may be any number as long as it is plural. Each electric wire 21 extends, for example, along the X axis. The length direction X1 of the wire bundle 11 is, for example, a direction along the X axis. For example, the length direction X1 is a direction from the connector 15 to the connector 16 along the X axis.

As shown in FIG. 3, each of the electric wires 21a, 21b, and 21c is a coated wire having a core wire 22 made of a conductor and an insulating coating 23 covering the outer periphery of the core wire 22. Note that FIG. 3 is a sectional view taken along line 3-3 in FIG.

As the core wire 22, for example, a twisted wire made by twisting a plurality of metal wires, a columnar conductor made of a single columnar metal rod with a solid structure inside, or a cylindrical conductor with a hollow structure inside. etc. can be used. Moreover, as the core wire 22, for example, a combination of multiple types of conductors such as twisted wires, columnar conductors, and cylindrical conductors can also be used. Examples of the columnar conductor include a single core wire and a bus bar. The core wire 22 is, for example, a twisted wire. As the material of the core wire 22, for example, a metal material such as copper-based or aluminum-based can be used.

The cross-sectional shape of the core wire 22 cut by a plane perpendicular to the length direction of the electric wire 21, ie, the length direction X1 of the electric wire bundle 11, can be any shape. The cross-sectional shape of the core wire 22 is, for example, a circular shape, a semicircular shape, a polygonal shape, a square shape, a flat shape, or the like. The cross-sectional shape of the core wire 22 is, for example, circular.

For example, the insulation coating 23 covers the entire outer peripheral surface of the core wire 22 . The insulating coating 23 is made of an insulating material such as synthetic resin, for example.
The thicknesses of the electric wires 21a, 21b, and 21c may be the same or different. The cross-sectional shapes of the electric wires 21a, 21b, and 21c may be the same or different.

(Configuration of connectors 15 and 16)
As shown in FIGS. 1 and 2, the wire harness 10 includes, for example, a connector 15 connected to one end of both ends of the wire bundle 11 in the length direction X1, and a connector connected to the other end. 16. The connector 15 has, for example, a plurality of terminals (not shown) to which one ends of the electric wires 21a, 21b, and 21c in the length direction X1 are electrically connected. The connector 16 has, for example, a plurality of terminals (not shown) to which the other ends of the electric wires 21a, 21b, and 21c in the length direction X1 are electrically connected. The electric wires 21a, 21b, and 21c are electrically connected to the plurality of terminals by being joined to the plurality of terminals, respectively. As a method for joining the electric wires 21a, 21b, 21c and the plurality of terminals, crimping, welding such as ultrasonic welding or laser welding, or other known joining methods can be used. The connectors 15 and 16 are each connected to a mating connector of a separate electrical device.

(Configuration of electromagnetic shielding member 12)
The electromagnetic shielding member 12 covers the entire outer periphery of the wire bundle 11 in the length direction X1 of the wire bundle 11 . Further, the electromagnetic shielding member 12 covers the entire outer periphery of the wire bundle 11. The electromagnetic shielding member 12 has, for example, a tubular shape. The electromagnetic shielding member 12 is made of metal. The electromagnetic shielding member 12 is, for example, a braided member in which a plurality of metal wires 31 are woven together. In addition, in the figure, the electromagnetic shielding member 12 is illustrated in a simplified manner. As the material of the metal wire 31, for example, a copper-based metal material, an aluminum-based metal material, or the like can be used. The electromagnetic shielding member 12 is grounded to the vehicle body. For example, the electromagnetic shielding member 12 is grounded to the vehicle body via at least one of the connectors 15 and 16.

(Configuration of exterior member 13)
The wire harness 10 includes, for example, two exterior members 13, ie, exterior members 13a and 13b. Note that the number of exterior members 13 is not limited to two, and may be three or more.

Each of the exterior members 13a, 13b is for protecting the electric wires 21a, 21b, 21c. Each of the exterior members 13a and 13b is made of, for example, synthetic resin. As the exterior members 13a and 13b, for example, any one of a resin pipe, a resin protector, a flexible resin corrugated tube, etc. can be used. As the resin material, for example, synthetic resins such as polyolefin, polyamide, polyester, polyethylene terephthalate, and ABS resin can be used. Each of the exterior members 13a and 13b is, for example, a corrugated tube.

The wire bundle 11 and the electromagnetic shielding member 12 pass through each of the exterior members 13a and 13b. The exterior member 13a and the exterior member 13b are separated from each other in the length direction X1. Therefore, in a portion of the wire harness 10 between the exterior member 13a and the exterior member 13b, the wire bundle 11 and the electromagnetic shielding member 12 are exposed to the outside of the wire harness 10.

The exterior member 13a is aligned with the connector 15 in the length direction X1. For example, the exterior member 13a and the connector 15 are separated from each other in the length direction X1. Therefore, in a portion of the wire harness 10 between the exterior member 13a and the connector 15, the wire bundle 11 and the electromagnetic shielding member 12 are exposed to the outside of the wire harness 10.

The exterior member 13b is aligned with the connector 16 in the length direction X1. For example, the exterior member 13b and the connector 16 are separated from each other in the length direction X1. Therefore, in the portion of the wire harness 10 between the exterior member 13b and the connector 16, the wire bundle 11 and the electromagnetic shielding member 12 are exposed to the outside of the wire harness 10.

The wire harness 10 may further include a tape member 41 that positions each of the exterior members 13a and 13b with respect to the wire bundle 11 in the length direction X1. The tape member 41 is an adhesive tape having a strip-shaped base material and an adhesive layer laminated on one side of the base material. The tape member 41 is, for example, a polyvinyl chloride (PVC) tape. The tape member 41 is wound around both end regions in the length direction X1 of each of the exterior members 13a and 13b, and on portions of the wire bundle 11 near the both end regions. The tape member 41 is wound around a portion of the wire bundle 11 near both end regions in the longitudinal direction X1 of the exterior members 13a and 13b from the outside of the electromagnetic shielding member 12 that covers the portion. Note that in FIGS. 1 and 2, the tape member 41 is shown in a simplified cylindrical shape. The tape member 41 suppresses misalignment of each exterior member 13a, 13b with respect to the wire bundle 11 and the electromagnetic shielding member 12 in the longitudinal direction X1.

(Configuration of clamp 14)
As shown in FIGS. 1, 2, and 4, the wire harness 10 includes, for example, two clamps 14, ie, clamps 14a and 14b. Note that FIG. 4 is a sectional view taken along line 4-4 in FIG. The clamp 14a is attached to the exterior member 13a of the exterior members 13a and 13b. The clamp 14b is attached to the exterior member 13b of the exterior members 13a and 13b.

The clamp 14a includes, for example, a holding portion 51 that holds the exterior member 13a, and a mounting portion 52 that attaches the holding portion 51 to the attachment target 101. The clamp 14a is made of, for example, synthetic resin. The holding portion 51 has an annular shape surrounding the outer periphery of the exterior member 13a. The inner diameter of the holding portion 51 is, for example, slightly larger than the outer diameter of the exterior member 13a. The exterior member 13a is held by the holding part 51 by passing through the holding part 51 in the length direction X1. The attachment portion 52 is integrally provided on the outer peripheral surface of the holding portion 51. The attachment portion 52 has, for example, an attachment groove 53.

The attachment target 101 includes, for example, a bracket 102 to which the clamp 14a is attached. For example, the clamp 14a is attached to the attachment target 101 by inserting the bracket 102 into the attachment groove 53.

Since the clamp 14b has the same configuration as the clamp 14a, a detailed description of the clamp 14b will be omitted.
(First portions 25a, 25b and second portions 26a, 26b, 26c)
As shown in FIG. 2, the wire bundle 11 includes first portions 25a, 25b covered by the exterior members 13a, 13b, and second portions 26a, 26b, 26c not covered by the exterior members 13a, 13b. have

The first portion 25a is a portion of the wire bundle 11 that overlaps with the exterior member 13a in a direction perpendicular to the length direction X1. In FIG. 2, the first portion 25a is a portion of the wire bundle 11 between the boundary line L2 and the boundary line L3. The boundary line L2 is a line that passes through the end of the exterior member 13a in the opposite direction to the length direction X1 and is perpendicular to the length direction X1. The boundary line L3 is a line that passes through the end of the exterior member 13a in the length direction X1 and is perpendicular to the length direction X1. Note that in the electromagnetic shielding member 12, a portion that covers the first portion 25a is referred to as a first covering portion 35a.

The first portion 25b is a portion of the wire bundle 11 that overlaps the exterior member 13b in a direction perpendicular to the length direction X1. In FIG. 2, the first portion 25b is a portion of the wire bundle 11 between the boundary line L4 and the boundary line L5. The boundary line L4 is a line that passes through the end of the exterior member 13b in the opposite direction to the length direction X1 and is orthogonal to the length direction X1. The boundary line L5 is a line that passes through the end of the exterior member 13b in the length direction X1 and is perpendicular to the length direction X1. Note that in the electromagnetic shielding member 12, a portion that covers the first portion 25b is referred to as a first covering portion 35b.

The second portion 26a is a portion located between the exterior member 13a and the exterior member 13b in the wire bundle 11. In FIG. 2, the second portion 26a is a portion of the wire bundle 11 between the boundary line L3 and the boundary line L4. Note that in the electromagnetic shielding member 12, a portion that covers the second portion 26a is referred to as a second covering portion 36a.

The second portion 26b is a portion of the wire bundle 11 located between the connector 15 and the exterior member 13a. The second portion 26b is adjacent to the connector 15 in the length direction X1. In FIG. 2, the second portion 26b is a portion of the wire bundle 11 between the boundary line L1 and the boundary line L2. The boundary line L1 is a line that passes through the end of the connector 15 in the length direction X1 and is orthogonal to the length direction X1. Note that, in the electromagnetic shielding member 12, a portion that covers the second portion 26b is referred to as a second covering portion 36b.

The second portion 26c is a portion of the wire bundle 11 located between the connector 16 and the exterior member 13b. The second portion 26c is adjacent to the connector 16 in the length direction X1. In FIG. 2, the second portion 26c is a portion of the wire bundle 11 between the boundary line L5 and the boundary line L6. The boundary line L6 is a line that passes through the end of the connector 16 in the opposite direction to the length direction X1 and is orthogonal to the length direction X1. Note that in the electromagnetic shielding member 12, a portion that covers the second portion 26c is referred to as a second covering portion 36c. Each of the second covering portions 36a, 36b, and 36c is exposed to the outside of the wire harness 10.

As shown in FIG. 3, the electromagnetic shielding member 12 made of a braided member in which metal wires 31 are woven does not restrict the relative positions of the electric wires 21a, 21b, and 21c in the direction perpendicular to the length direction X1. That is, the electromagnetic shielding member 12 allows each of the electric wires 21a, 21b, and 21c to move to a certain extent inside the electromagnetic shielding member 12 in the direction orthogonal to the length direction X1. Therefore, in the second portion 26a, a gap may be formed between the adjacent electric wires 21a, 21b, and 21c in a portion covered only by the second covering portion 36a.

(Action of the first embodiment)
The operation of this embodiment will be explained.
When the electric wires 21a, 21b, 21c generate heat due to energization, the heat of the electric wires 21a, 21b, 21c is transmitted to the electromagnetic shielding member 12. The heat transferred to the electromagnetic shielding member 12 is radiated to the outside of the wire harness 10 from the second covering portions 36a, 36b, and 36c exposed to the outside of the wire harness 10. Further, since the second portions 26a, 26b, 26c are not covered by the exterior member 13, heat is prevented from being trapped in the second portions 26a, 26b, 26c.

(Effects of the first embodiment)
The effects of this embodiment will be explained.
(1-1) The wire harness 10 includes an electric wire bundle 11 having a plurality of electric wires 21, and a metal electromagnetic shielding member 12 that covers the entire outer periphery of the electric wire bundle 11 in the length direction X1. Further, the wire harness 10 includes a plurality of tubular exterior members 13 (13a, 13b) configured so that the wire bundle 11 and the electromagnetic shielding member 12 pass through them. The plurality of exterior members 13 are separated from each other in the length direction X1. The wire bundle 11 has first portions 25a, 25b covered by the exterior member 13 and second portions 26a, 26b, 26c not covered by the exterior member 13.

According to this configuration, since the electromagnetic shielding member 12 is made of metal, it has excellent thermal conductivity. Further, the portions of the electromagnetic shielding member 12 that cover the second portions 26a, 26b, and 26c are not covered by the exterior member 13 and are therefore exposed to the outside of the wire harness 10. Therefore, when the electric wire 21 generates heat when the electric wire 21 is energized, the heat of the electric wire 21 is easily dissipated to the outside of the wire harness 10 from the portion of the electromagnetic shielding member 12 that covers the second portions 26a, 26b, and 26c. That is, the heat of the electric wire 21 is easily dissipated to the outside of the wire harness 10 from the second covering portions 36a, 36b, and 36c. Therefore, it is possible to suppress heat from being accumulated between the adjacent electric wires 21 in the second portions 26a, 26b, and 26c. Further, the heat generated in the first portions 25a, 25b is transferred to a portion of the electromagnetic shielding member 12 that covers the first portions 25a, 25b, and then a portion of the electromagnetic shielding member 12 that covers the second portions 26a, 26b, 26c. can be dissipated from the wire harness 10 to the outside. That is, the heat generated in the first parts 25a, 25b can be transferred to the first covered parts 35a, 35b, and then radiated to the outside of the wire harness 10 from the second covered parts 36a, 36b, 36c. Therefore, it is possible to suppress heat from accumulating inside the exterior member 13 that covers the first portions 25a, 25b. For these reasons, the heat dissipation of the wire harness 10 can be improved.

(1-2) The electromagnetic shielding member 12 is a braided member in which a plurality of metal wires 31 are woven together. According to this configuration, the electromagnetic shielding member 12 can be easily prepared. The braided member has gaps between the braided metal wires 31. Therefore, it is possible to suppress heat from accumulating inside the portion of the electromagnetic shielding member 12 that covers the second portions 26a, 26b, and 26c.

(1-3) The wire harness 10 further includes clamps 14a and 14b for attaching the wire harness 10 to the attachment target 101. Clamps 14a and 14b are attached to at least one of the plurality of exterior members 13. According to this configuration, by attaching the clamps 14a, 14b to the exterior member 13, the wire harness 10 can be attached to the attachment target 101 while protecting each electric wire 21 from the clamps 14a, 14b.

(1-4) The exterior member 13 is a corrugated tube made of resin. According to this configuration, the exterior member 13 can be easily prepared. The exterior member 13 can be easily assembled to the wire bundle 11 and the electromagnetic shielding member 12 so that the wire bundle 11 and the electromagnetic shielding member 12 penetrate the exterior member 13.

(1-5) The wire harness 10 further includes connectors 15 and 16 connected to the ends of the wire bundle 11 in the length direction X1. The wire bundle 11 has a second portion 26b adjacent to the connector 15 in the length direction X1. The wire bundle 11 has a second portion 26c adjacent to the connector 16 in the length direction X1.

According to this configuration, by connecting the connector 15 to a mating connector of the electric device, the wire harness 10 can be easily electrically connected to the electric device. By connecting the connector 16 to a mating connector of another electrical device, the wire harness 10 can be easily electrically connected to the other electrical device. Further, when heat from an electrical device to which the connector 15 is connected is transmitted to the wire harness 10 via the connector 15, the propagating heat is removed from a portion of the electromagnetic shielding member 12 that covers the second portion 26b adjacent to the connector 15. It is easy to dissipate to the outside of the wire harness 10. That is, the heat propagating from the connector 15 to the wire harness 10 is easily dissipated to the outside of the wire harness 10 from the second covering portion 36b that covers the second portion 26b adjacent to the connector 15. Similarly, heat propagating from the connector 16 to the wire harness 10 is easily dissipated to the outside of the wire harness 10 from the second covering portion 36c that covers the second portion 26c adjacent to the connector 16.

(Second embodiment)
A second embodiment of the wire harness will be described below. Note that the same or corresponding configurations as in the first embodiment are given the same reference numerals, and their explanations will be omitted.

5 and 6 show a wire harness 10A of the second embodiment. FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. The wire harness 10A includes a tape member 41 wound around an end region in the length direction X1 of the exterior member 13a and an end region in the opposite direction in the length direction X1 of the exterior member 13b in the wire harness 10 of the first embodiment. Instead, a tightening member 61 is provided.

The tightening member 61 has a tape or sheet shape. The tightening member 61 covers the second portion 26a from the outside of the electromagnetic shielding member 12 and brings the electromagnetic shielding member 12 into close contact with the second portion 26a. The tightening member 61 is thinner than the exterior member 13, for example.

The tightening member 61 is, for example, an adhesive tape 62 spirally wound around the second portion 26a from the outside of the electromagnetic shielding member 12. The adhesive tape 62 is a tape in which a strip-shaped base material and an adhesive layer are laminated on one side of the base material. Examples of the adhesive tape 62 include PVC tape, fluororesin tape, cloth tape whose base material is made of woven fabric, nonwoven tape whose base material is made of nonwoven fabric, and paper tape whose base material is made of paper. , etc. can be used. The adhesive tape 62 is, for example, a PVC tape.

The adhesive tape 62 is spirally wound around the second portion 26a from the outside of the electromagnetic shielding member 12 so that the adhesive tape 62 partially overlaps in the width direction. For this reason, the tightening member 61 covers, for example, the second portion 26a over the entire circumference from the outside of the second covering portion 36a. Further, the inner circumferential surface of the tightening member 61 contacts the outer circumferential surface of the second covering portion 36a. Then, the tightening member 61 brings the second covering portion 36a into close contact with the second portion 26a. Further, the tightening member 61 restrains the electric wires 21a, 21b, 21c so that the electric wires 21a, 21b, 21c are piled up inside the second covered portion 36a. Note that the tightening member 61 may cover, for example, an end region in the length direction X1 of the exterior member 13a adjacent to the second portion 26a in the length direction X1. Further, the tightening member 61 may cover an end region of the exterior member 13b adjacent to the second portion 26a in the length direction X1 in the opposite direction to the length direction X1.

(Action of the second embodiment)
According to the wire harness 10A of this embodiment, the same effect as the wire harness 10 of the first embodiment can be obtained. Further, the second covering portion 36a is tightly attached to the second portion 26a by the tightening member 61. Therefore, the heat of the second portion 26a is easily transmitted to the second covered portion 36a. Further, since the tightening member 61 covers the second portion 26a from the outside of the second covering portion 36a so as to bring the second covering portion 36a into close contact with the second portion 26a, the inner circumferential surface of the tightening member 61 is covered with the second covering portion 26a. It contacts the outer peripheral surface of the portion 36a. Therefore, the layer of air between the inner circumferential surface of the tightening member 61 and the outer circumferential surface of the second covering portion 36a is reduced. Therefore, the heat of the second portion 26a is easily dissipated from the second covering portion 36a to the outside of the wire harness 10A via the tightening member 61.

(Effects of the second embodiment)
According to this embodiment, in addition to the same effects as (1-1) to (1-5) of the first embodiment, the following effects can be achieved.

(2-1) The wire harness 10A includes a tape-shaped or sheet-shaped tightening member 61 that covers the second portion 26a from the outside of the electromagnetic shielding member 12 and brings the electromagnetic shielding member 12 into close contact with the second portion 26a.

According to this configuration, the electromagnetic shielding member 12 is brought into close contact with the second portion 26a covered by the tightening member 61. Therefore, the air layer between the second portion 26a and the electromagnetic shielding member 12 is reduced. Therefore, the heat of the electric wire 21 is more easily transmitted from the second portion 26a to the electromagnetic shielding member 12. Therefore, the heat of the electric wire 21 can be easily dissipated from the portion of the electromagnetic shielding member 12 that covers the second portion 26a, that is, the second covering portion 36a, to the outside of the wire harness 10A. As a result, the heat dissipation of the wire harness 10A can be further improved.

(2-2) The tightening member 61 is an adhesive tape 62 spirally wound around the second portion 26a from the outside of the electromagnetic shielding member 12. According to this configuration, by spirally wrapping the adhesive tape 62 around the second portion 26a from the outside of the electromagnetic shielding member 12, the electromagnetic shielding member 12 can be easily brought into close contact with the second portion 26a.

(2-3) The adhesive tape 62 is spirally wound around the second portion 26a from the outside of the electromagnetic shielding member 12 so that the adhesive tape 62 partially overlaps in the width direction.
According to this configuration, the entire electromagnetic shielding member 12 can be brought into close contact with the second portion 26a around which the adhesive tape 62 is wound from the outside of the electromagnetic shielding member 12 in the length direction X1. Therefore, the air layer between the second portion 26a and the second covering portion 36a can be reduced overall. Therefore, the heat of the electric wire 21 is further easily transferred from the second portion 26a to the electromagnetic shielding member 12. Therefore, the heat of the electric wire 21 is further easily dissipated to the outside of the wire harness 10A from the second covering portion 36a that covers the second portion 26a in the electromagnetic shielding member 12. As a result, the heat dissipation of the wire harness 10A can be further improved.

(Example of change)
This embodiment can be modified and implemented as follows. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

- In the wire harness 10, a plurality of connectors 15 may be connected to the ends of the wire bundle 11 in the length direction X1. For example, the wire harness 10 includes a connector 15 to which one end of the electric wires 21a and 21b in the longitudinal direction X1 is connected, and another connector 15 to which one end of the electric wire 21c in the longitudinal direction X1 is connected. Good too. Further, the wire harness 10 does not need to include at least one of the connector 15 and the connector 16. You may change similarly in wire harness 10A.

- The number of clamps 14 provided in the wire harness 10 is not limited to two, but may be one, or three or more. Further, a plurality of clamps 14 may be attached to one exterior member 13. You may change similarly in wire harness 10A.

- As the electromagnetic shielding member 12, a metal foil covering the outer periphery of the wire bundle 11 may be used instead of the braided member.
- In the second embodiment, the adhesive tape 62 may be spirally wound around the second portion 26a from the outside of the electromagnetic shielding member 12 so that a portion of the adhesive tape 62 in the width direction does not overlap.

- In the second embodiment, the tightening member 61 may be a tape-shaped or sheet-shaped member, and may be made of adhesive, as long as it is a member that allows the electromagnetic shielding member 12 to be brought into close contact with at least a portion of the second portions 26a, 26b, and 26c. It is not limited to the tape 62. For example, the tightening member 61 may be a twisted tube made of woven resin fibers. In this case, the twist tube is fixed to the wire bundle 11 and the electromagnetic shielding member 12 with a binding member such as an adhesive tape or a binding band.

- In the second embodiment, the tightening member 61 may cover at least a portion of at least one of the second portions 26a, 26b, and 26c from the outside of the electromagnetic shielding member 12. However, the tightening member 61 connects the second portions 26a, 26b, 26c from the outside of the electromagnetic shielding member 12 so as to bring the electromagnetic shielding member 12 into close contact with at least a portion of at least one of the second portions 26a, 26b, 26c. Covering at least a portion of at least one. For example, the wire harness 10A may further include a tightening member 61 that covers the second portion 26b from the outside of the electromagnetic shielding member 12. Further, the wire harness 10A may further include a tightening member 61 that covers the second portion 26c from the outside of the electromagnetic shielding member 12. Further, the tightening member 61 may further cover at least one of the first portions 25a, 25b so as to bring the electromagnetic shielding member 12 into close contact with the first portions 25a, 25b. Furthermore, in the wire harness 10A of the second embodiment, the tightening member 61 does not need to cover the end region in the length direction X1 of the exterior member 13a adjacent to the second portion 26a in the length direction X1. Further, in the wire harness 10A of the second embodiment, the tightening member 61 does not cover the end region of the exterior member 13b adjacent to the second portion 26a in the length direction X1 in the opposite direction to the length direction X1. Good too.

- In the above embodiment, the direction from the connector 15 to the connector 16 along the X axis is defined as the length direction X1. However, the direction from the connector 16 to the connector 15 along the X axis may be defined as the length direction X1.

- The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims, not the meaning described above, and is intended to include meanings equivalent to the scope of the claims and all changes within the scope.

10, 10A wire harness 11 electric wire bundle 12 electromagnetic shielding member 13, 13a, 13b exterior member 14, 14a, 14b clamp 15, 16 connector 21, 21a, 21b, 21c electric wire 22 core wire 23 insulation coating 25a, 25b first part 26a, 26b, 26c Second portion 31 Metal wire 35a, 35b First covered portion 36a, 36b, 36c Second covered portion 41 Tape member 51 Holding portion 52 Mounting portion 53 Mounting groove 61 Tightening member 62 Adhesive tape 101 Mounting target 102 Bracket L1 , L2, L3, L4, L5, L6 Boundary line X1 Length direction

Claims (8)

an electric wire bundle having a plurality of electric wires;
a metal electromagnetic shielding member that covers the outer periphery of the wire bundle over the entire length of the wire bundle;
a tubular exterior member configured to be penetrated by the wire bundle and the electromagnetic shielding member;
Equipped with
The exterior member is one of a plurality of exterior members,
The plurality of exterior members are spaced apart from each other in the length direction of the wire bundle,
The electric wire bundle is a wire harness having a first portion covered with the exterior member and a second portion not covered with the exterior member. The wire harness according to claim 1, further comprising a tape-shaped or sheet-shaped tightening member that covers the second portion from the outside of the electromagnetic shielding member and brings the electromagnetic shielding member into close contact with the second portion. The wire harness according to claim 2, wherein the tightening member is an adhesive tape spirally wound around the second portion from the outside of the electromagnetic shielding member. The wire harness according to claim 3, wherein the adhesive tape is spirally wound around the second portion from the outside of the electromagnetic shielding member so that a portion of the adhesive tape in the width direction overlaps. The wire harness according to claim 1, wherein the electromagnetic shielding member is a braided member formed by braiding a plurality of metal wires. further comprising at least one clamp for attaching the wire harness to an attachment target,
The wire harness according to claim 1, wherein the clamp is attached to at least one of the plurality of exterior members. The wire harness according to claim 1, wherein the exterior member is a resin corrugated tube. The wire harness further includes a connector connected to an end of the wire bundle in the length direction of the wire bundle,
The wire harness according to claim 1, wherein the second portion is adjacent to the connector and the wire bundle in a length direction.

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