Wire harness

Abstract

To provide a wiring harness that can suppress the influence of magnetic fields with a simple configuration.SOLUTION: At least a portion of a wiring harness 10 is placed inside the vehicle interior, which is distinguished from the outside of a vehicle by the body B of the vehicle. The wiring harness 10 includes an electric wire member 21 having a first electric wire 22 and a metal shield member 23 that covers the first electric wire 22, a resin case 30 disposed in the vehicle interior, having an opening 31, and housing the electric wire member 21, and a metal member 40 that covers the opening 31 of the resin case 30. The resin case 30 includes a holding portion 35 that can hold the metal member 40.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a wire harness. [Background technology]

[0002] Conventionally, for example, hybrid vehicles, electric vehicles, etc., are equipped with high-voltage wire harnesses. Some such wire harnesses are arranged outside the vehicle body, passing under the floor (see, for example, Patent Document 1). In such wire harnesses, the body is interposed between the wire harness and the occupant, and therefore the magnetic field generated by a large current is prevented from affecting the occupant. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-32933 Summary of the Invention [Problem to be solved by the invention]

[0004] However, if a high-voltage wire harness such as that described above is arranged to pass through the interior of the vehicle, such as on the floor, there is a concern that the magnetic field generated by the large current will affect passengers unless some measures are taken.

[0005] An object of the present disclosure is to provide a wire harness that can suppress the influence of a magnetic field with a simple configuration. [Means for solving the problem]

[0006] The wire harness of the present disclosure is a high-voltage wire harness that is at least partially disposed inside the vehicle interior, which is separated from the exterior of the vehicle by the vehicle body, and includes: an electric wire member having an electric wire and a metal shielding member covering the electric wire; a resin case that is disposed inside the vehicle interior, has an opening, and houses the electric wire member; and a metal member that covers the opening of the resin case, and the resin case has a holding portion that can hold the metal member. [Effects of the Invention]

[0007] According to the wire harness of the present disclosure, the influence of the magnetic field can be suppressed with a simple configuration. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram showing a wire harness according to an embodiment. [Figure 2] FIG. 2 is a partial perspective view of the wire harness according to the embodiment. [Figure 3] FIG. 3 is a partially exploded perspective view of the wire harness according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the 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] A high-voltage wire harness that is at least partially disposed inside a vehicle interior that is separated from the exterior by the vehicle body, and that includes an electric wire member having an electric wire and a metal shielding member that covers the electric wire, a resin case that is disposed inside the vehicle interior and has an opening and that houses the electric wire member, and a metal member that covers the opening of the resin case, and the resin case has a holding portion that can hold the metal member.

[0010] According to this configuration, the metallic shielding member that covers the electric wires suppresses the radiation of electromagnetic waves, such as so-called electromagnetic noise. Furthermore, because the opening of the resin case that is disposed in the vehicle interior and that houses the electric wires is covered with the metallic member, the magnetic field generated by a large current is prevented from affecting passengers. Furthermore, by covering the opening of the resin case, the metallic member functions as a physical cover that prevents the electric wires from escaping from the resin case, thereby enabling a simpler configuration than, for example, a configuration that includes a separate resin cover that covers the opening of the resin case. Furthermore, because the metal member is held in the holding portion of the resin case, the size can be reduced compared to, for example, a configuration in which the metal member is provided with mounting feet or the like and fastened to the body or the like with bolts.

[0011] [2] In the above item [1], the metal member may be held by the holding portion in a state spaced apart from the body. According to this configuration, the metal member is held by the holding portion while spaced apart from the body, which prevents force from being applied to the metal member regardless of, for example, manufacturing errors, etc. That is, for example, in a configuration in which the metal member is held by the holding portion of a resin case and comes into contact with the body, if there is dimensional variation due to manufacturing errors, etc., there is a risk that force will remain applied to the metal member between the holding portion and the body, but this can be avoided.

[0012] [3] In the above [1] or [2], the metal member may have a U-shaped cross section and may be open on the body side. According to this configuration, the metal member has a U-shaped cross section and is open on the body side, so that the entire outer periphery of the electric wire member can be surrounded by the body and the metal member, thereby effectively suppressing the influence of the magnetic field generated by the large current on the passengers.

[0013] [4] In any one of [1] to [3] above, the resin case may have a U-shaped cross section and may be open on the opposite side of the body to form the opening.

[0014] According to this configuration, the resin case has a U-shaped cross section and an opening on the opposite side of the body, which is covered with a metal member, interposing the metal member between the occupant in the vehicle cabin and the electric wire member, thereby suppressing the influence of the magnetic field generated by the large current on the occupant.

[0015] [5] In any one of the above [1] to [4], the shielding member may be made of a braided member, and the metal member may be made of a metal plate. According to this configuration, the shielding member is made of a braided material and the metal member is made of a metal plate, so that each can be appropriately configured. That is, since the shielding member is made of a braided material, radiation of electromagnetic waves such as so-called electromagnetic noise can be suitably suppressed. Furthermore, since the metal member is made of a metal plate, it is possible to suitably suppress the magnetic field generated by a large current from affecting a passenger.

[0016] [6] In any one of the above [1] to [5], the electric wire may be a first electric wire for high potential, and may further include a second electric wire for low potential that is housed in the resin case together with the electric wire member without being covered by the shielding member.

[0017] According to this configuration, the second low-potential electric wire paired with the first high-potential electric wire is housed in the resin case together with the electric wire members without being covered with a shielding member, which prevents unnecessary use of the shielding member for the second low-potential electric wire, and further allows the first and second electric wires to be routed in a suitable manner using a common resin case.

[0018] [7] In any one of the above [1] to [6], the shielding member may have a grounding portion. According to this configuration, the shielding member has a grounding portion, and therefore radiation of electromagnetic waves such as so-called electromagnetic noise can be suitably suppressed.

[0019] [8] In any one of the above [1] to [7], the resin case may have a fixing portion that is fixed to the body. According to this configuration, the resin case has a fixing portion that is fixed to the body, and therefore can be easily fixed to the body.

[0020] [Details of the 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, for convenience of explanation, some of the configuration may be exaggerated or simplified. Furthermore, the dimensional ratios of each part may differ from one drawing to another. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. In this specification, "parallel" and "orthogonal" do not only refer to strictly parallel or orthogonal, but also include approximately orthogonal within the scope of the effects of the present embodiment. Furthermore, in this specification, "circle" and "arc" do not only refer to strictly circular or arc, but also include approximately circular or arc within the scope of the effects of the present embodiment.

[0021] (Overall configuration of the wire harness 10) 1 electrically connects two or more electrical devices. The wire harness 10 is for high voltage and electrically connects an inverter 11 installed in the front of a vehicle V, such as a hybrid vehicle or an electric vehicle, to a high-voltage battery 12 installed behind the inverter 11 on the vehicle V.

[0022] The inverter 11 is connected to a wheel drive motor (not shown) that serves as a power source for running the vehicle. The inverter 11 generates AC power from DC power from a high-voltage battery 12 and supplies the AC power to the motor. The high-voltage battery 12 is a battery capable of supplying a voltage of, for example, several hundred volts.

[0023] At least a portion of the wire harness 10 is arranged inside the vehicle interior, which is separated from the exterior by the body B of the vehicle V. The wire harness 10 of this embodiment is arranged outside the body B at the rear of the vehicle V, passing under the floor, and inside the body B from the center to the front of the vehicle V, passing over the floor. That is, the wire harness 10 is routed so as to pass over the floor, which is inside the body B, in areas corresponding to the driver's seat and passenger seat.

[0024] As shown in FIGS. 2 to 4, the wire harness 10 includes a group of electric wires 20 that electrically connects the above-mentioned electric devices to each other, a resin case 30, and a metal member 40. (Configuration of the electric wire group 20) As shown in FIG. 4, the electric wire group 20 includes an electric wire member 21. The electric wire member 21 includes a first electric wire 22 serving as a high-potential electric wire and a metallic shielding member 23 covering the first electric wire 22. The first electric wire 22 includes a core wire 22a and an insulating coating 22b covering the outer periphery of the core wire 22a. The core wire 22a may be, for example, a stranded wire formed by twisting together a plurality of metal wires, or a single-core wire. The insulating coating 22b is made of an insulating material such as synthetic resin. The shielding member 23 is made of a braided member formed by braiding a plurality of metal wires into a tubular shape. In other words, the electric wire member 21 is a so-called shielded electric wire.

[0025] The electric wire group 20 also includes a second electric wire 24 for low potential. The second electric wire 24 has a core wire 24a and an insulating coating 24b that covers the outer periphery of the core wire 24a. The core wire 24a may be, for example, a stranded wire formed by twisting together a plurality of metal wires, or a single-core wire. The insulating coating 24b is made of an insulating material such as synthetic resin. The second electric wire 24 is formed to have a smaller diameter than the first electric wire 22. The core wire 22a of the first electric wire 22 for high potential is connected to the positive terminal of the high-voltage battery 12, and the core wire 24a of the second electric wire 24 for low potential is connected to the negative terminal of the high-voltage battery 12.

[0026] 1, the shielding member 23 has grounding portions 23a. The grounding portions 23a are provided at both ends of the shielding member 23 and are grounded by being electrically connected to the metal case or the body B via a connector or the like.

[0027] (Configuration of resin case 30) 3 and 4, the resin case 30 has a U-shaped cross section and is open on the side opposite to the body B to form an opening 31. The resin case 30 of this embodiment is formed long along the longitudinal direction of the vehicle V in order to accommodate the group of electric wires 20 routed along the longitudinal direction of the vehicle V.

[0028] 4, the resin case 30 has a bottom 32 facing the body B and sidewalls 33 that bend and extend from the bottom 32. The bottom 32 is provided with fitting portions 34 that serve as fixing portions. The fitting portions 34 are provided at multiple locations in the longitudinal direction of the resin case 30. When fitted into fixing holes Ba provided in the body B, the fitting portions 34 are fixed to the body B by engaging in the removal direction.

[0029] 3, the side wall 33 is provided with a holding portion 35. The holding portion 35 is provided at a plurality of locations in the longitudinal direction of the resin case 30. Although FIG. 3 illustrates the holding portion 35 as being provided only on one side wall 33 of the resin case 30, the holding portion 35 may also be provided on the other side wall 33. The holding portion 35 has an insertion portion 36 that protrudes outward from the side wall 33 and opens on the opposite side of the body B. The holding portion 35 also has a claw (not shown) inside.

[0030] (Configuration of metal member 40) 3 and 4, the metal member 40 has a U-shaped cross section and is open on the body B side. The metal member 40 is made of a metal plate. That is, the metal member 40 is made by subjecting a metal plate to punching and bending. The metal member 40 is attached to the resin case 30 so as to cover the opening 31.

[0031] More specifically, the metal member 40 has a top portion 41 that covers the opening 31 of the resin case 30 , and side portions 42 that bend and extend from the top portion 41 to cover the side wall portions 33 of the resin case 30 . 3, the side portion 42 is provided with a retaining piece 43 that is retained by the retaining portion 35 of the resin case 30. The retaining piece 43 is provided at a plurality of locations in the longitudinal direction of the metal member 40 at positions corresponding to the retaining portion 35. The retaining piece 43 is formed with a pair of notches 44 that extend from the tip of the side portion 42 toward the base end, so that the retaining piece 43 can be inserted into the insertion portion 36. The retaining piece 43 is also provided with a retaining hole 45. When the retaining piece 43 is inserted into the insertion portion 36 of the retaining portion 35, a claw (not shown) of the retaining portion 35 engages with the retaining hole 45, thereby retaining the retaining piece 43 relative to the retaining portion 35.

[0032] 4, the side portions 42 are set to a length that does not allow the metal member 40 to come into contact with the body B when the metal member 40 is held by the holding portion 35 of the resin case 30. As a result, the metal member 40 is held by the holding portion 35 in a state separated from the body B.

[0033] As shown in FIG. 4, for example, a floor carpet 50 is disposed above the metal member 40. The operation of the above embodiment will be described.

[0034] The group of electric wires 20 that runs inside the body B, that is, on the floor, is covered with a resin case 30 and a metal member 40. Therefore, even if the wire harness 10 is stepped on by a passenger on the floor carpet 50, for example, the group of electric wires 20 is prevented from being deformed by force.

[0035] Next, the effects of the above embodiment will be described below. (1) The metallic shielding member 23 covering the first electric wire 22 suppresses the radiation of electromagnetic waves such as so-called electromagnetic noise. Furthermore, the opening 31 of the resin case 30, which is disposed in the vehicle interior and houses the electric wire member 21, is covered by the metal member 40, thereby suppressing the magnetic field generated by a large current flowing through the first electric wire 22 of the electric wire member 21 from affecting passengers. Furthermore, by covering the opening 31 of the resin case 30, the metal member 40 functions as a physical cover that prevents the electric wire member 21 from escaping from the resin case 30. Therefore, the configuration can be simpler than, for example, a configuration in which a separate resin cover is provided to cover the opening 31 of the resin case 30. Furthermore, because the metal member 40 is held by the holding portion 35 of the resin case 30, the configuration can be made more compact than, for example, a configuration in which the metal member 40 is provided with mounting feet or the like and fastened to the body or the like with bolts.

[0036] (2) Because the metal member 40 is held by the holding portion 35 while spaced apart from the body B, it is possible to prevent force from being applied to the metal member 40 regardless of, for example, manufacturing errors. That is, for example, in a configuration in which the metal member 40 is held by the holding portion 35 of the resin case 30 and comes into contact with the body B, if the dimensions vary due to manufacturing errors or the like, there is a risk that force will remain applied to the metal member 40 between the holding portion 35 and the body B. However, this can be avoided.

[0037] (3) The metal member 40 has a U-shaped cross section and is open on the side facing the body B. Therefore, the entire outer periphery of the electric wire member 21 can be surrounded by the body B and the metal member 40. This effectively prevents the magnetic field generated by a large current from affecting passengers.

[0038] (4) The resin case 30 has a U-shaped cross section and is open on the opposite side of the body B to form the opening 31. The opening 31 is covered with the metal member 40, so that the metal member 40 is interposed between the passenger in the vehicle cabin and the electric wire member 21. Therefore, the magnetic field generated by the large current is prevented from affecting the passenger.

[0039] (5) Because the shielding member 23 is made of a braided material and the metal member 40 is made of a metal plate, they can be configured appropriately. That is, because the shielding member 23 is made of a braided material, it can effectively suppress the radiation of electromagnetic waves such as so-called electromagnetic noise. Furthermore, because the metal member 40 is made of a metal plate, it can effectively suppress the magnetic field generated by a large current from affecting the passenger.

[0040] (6) The second electric wire 24 for low potential, which is paired with the first electric wire 22 for high potential, is housed in the resin case 30 together with the electric wire member 21 without being covered with the shielding member 23. Therefore, the shielding member 23 is not used unnecessarily for the second electric wire 24 for low potential, and further, the electric wire member 21 including the first electric wire 22 and the second electric wire 24 can be preferably routed by sharing the resin case 30.

[0041] (7) The shielding member 23 has the grounding portion 23a, which can effectively suppress the radiation of electromagnetic waves such as so-called electromagnetic noise. (8) The resin case 30 has the fitting portion 34 as a fixing portion that is fixed to the body B, and therefore can be easily fixed to the body B. In the present embodiment, since the fixing portion is the fitting portion 34, the resin case 30 can be easily fixed to the body B simply by fitting it.

[0042] This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility. In the above embodiment, the metal member 40 is held by the holding portion 35 while being spaced apart from the body B, but this is not limited to this. For example, the metal member 40 may be held by the holding portion 35 of the resin case 30 while a portion of the metal member 40 abuts against the body B.

[0043] In the above embodiment, the metal member 40 has a U-shaped cross section and is open on the body B side, but this is not limited to this and the metal member 40 may be changed to another shape or may be provided so as to open in another direction.

[0044] In the above embodiment, the resin case 30 has a U-shaped cross section and is open on the side opposite to the body B, but this is not limited to this and the resin case 30 may be changed to another shape or may be provided so as to open in another direction.

[0045] In the above embodiment, the shielding member 23 is made of a braided material, and the metal member 40 is made of a metal plate, but these may be changed to other configurations. For example, the shielding member 23 may be made of metal foil, etc. Furthermore, for example, the metal member 40 may be changed to a casting having portions with different thicknesses, etc.

[0046] In the above embodiment, the second electric wire 24 for low potential, which is paired with the first electric wire 22 for high potential, is accommodated in the resin case 30 together with the electric wire member 21 without being covered by the shielding member 23. However, this is not limited to this, and the second electric wire 24 may also be covered by a shielding member. Of course, other electric wires, such as signal wires, in addition to the first electric wire 22 and the second electric wire 24 may also be accommodated in the resin case 30.

[0047] In the above embodiment, the resin case 30 has the fitting portion 34 as a fixing portion that is fixed to the body B, but this is not limited to this and may be changed to another configuration. For example, the fixing portion may be a mounting foot that is fastened to the body B with a bolt or the like. Also, the resin case 30 may not have a fixing portion that is fixed to the body B, and may be configured to be fixed to another member that is fixed to the body B, for example.

[0048] In the above embodiment, the wire harness 10 electrically connects the inverter 11 and the high-voltage battery 12, but is not limited to this and may electrically connect other electrical devices.

[0049] In the above embodiment, the wire harness 10 is adapted to a high-voltage battery 12 of several hundred volts. However, the present invention may be applied to a wire harness for other high voltages, such as a voltage of 60 volts to 600 volts. [Explanation of symbols]

[0050] 10 Wire harness 11 Inverter 12 High-voltage battery 20 wire group 21 Electrical wiring components 22 First Electric Wire 22a core wire 22b Insulation coating 23 Shielding material 23a Grounding part 24 Second Electric Wire 24a core wire 24b Insulation coating 30 Resin case 31 Opening 32 Bottom 33 Side wall 34 Fitting part 35 Holding part 36 Insertion section 40 Metallic parts 41 Top 42 Side 43 Holding piece 44 Notch 45 Retaining hole 50 Floor carpet B Body Ba fixing hole V vehicle

Claims

1. A high-voltage wire harness at least a portion of which is disposed inside a vehicle interior that is separated from the exterior of the vehicle by a vehicle body, an electric wire member having an electric wire and a metallic shield member covering the electric wire; a resin case that is disposed in the vehicle interior, has an opening, and accommodates the electric wire member; a metal member covering the opening of the resin case, the resin case has a holding portion capable of holding the metal member, The metal member has a U-shaped cross section and is open on the body side. Wire harness.

2. The metal member is held by the holding portion in a state spaced apart from the body. The wire harness according to claim 1 .

3. The resin case has a U-shaped cross section, and is open on the opposite side of the body to form the opening. The wire harness according to claim 1 .

4. The shielding member is made of a braided material, The metal member is made of a metal plate. The wire harness according to claim 1 .

5. the electric wire is a first electric wire for high potential, Further, a second electric wire for low potential is included which is not covered by the shielding member and is housed in the resin case together with the electric wire member. The wire harness according to claim 1 .

6. The shield member has a ground portion. The wire harness according to claim 1 .

7. The resin case has a fixing portion that is fixed to the body. The wire harness according to claim 1 .

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