Wire harness

Abstract

We provide a wire harness that can suppress the effects of magnetic fields with a simple configuration. [Solution] At least a portion of the wire harness 10 is located inside the vehicle, separated from the outside by the vehicle body B. The wire harness 10 comprises a wire member 21 having a first wire 22 and a metal shield member 23 covering the first wire 22, a resin case 30 located inside the vehicle, having an opening 31 and housing the wire member 21, and a metal member 40 covering the opening 31 of the resin case 30. The resin case 30 has a holding portion 35 capable of holding the metal member 40.

Description

Technical Field

[0001] This disclosure relates to a wire harness.

Background Art

[0002] Conventionally, for example, hybrid vehicles, electric vehicles, etc. are equipped with wire harnesses for high voltages. As such a wire harness, there is one that is arranged outside the vehicle body and passes through the so-called underfloor (see, for example, Patent Document 1). In such a wire harness, since the vehicle body is interposed between the wire harness and the passengers, the magnetic field generated by a large current is suppressed from affecting the passengers.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when a wire harness for high voltage as described above is arranged to pass through the passenger compartment such as on the so-called floor, there is a concern that the magnetic field generated by a large current may affect the passengers unless some countermeasures are taken.

[0005] An object of this disclosure is to provide a wire harness capable of suppressing the influence of a magnetic field with a simple configuration.

Means for Solving the Problems

[0006] The wire harness of the present disclosure is a high-voltage wire harness in which at least a portion is arranged inside the passenger compartment, which is separated from the outside of the vehicle by the body of the vehicle, and comprises a wire member having an electric wire and a metal shielding member covering the electric wire; a resin case arranged inside the passenger compartment and having an opening in which the wire member is housed; and a metal member covering the opening of the resin case, wherein the resin case has a holding portion capable of holding the metal member. [Effects of the Invention]

[0007] The wire harness of this disclosure allows for the suppression of magnetic field effects with a simple configuration. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a schematic diagram showing a wire harness according to one embodiment. [Figure 2] Figure 2 is a partial perspective view of a wire harness according to one embodiment. [Figure 3] Figure 3 is an exploded perspective view of a wire harness according to one embodiment. [Figure 4] Figure 4 is a cross-sectional view along line 4-4 in Figure 2. [Modes for carrying out the invention]

[0009] [Description of Embodiments in this Disclosure] First, the embodiments of this disclosure will be listed and described. The wire harness in this disclosure is [1] A high-voltage wire harness, at least a portion of which is located inside the vehicle interior, which is separated from the outside by the vehicle body, comprising: a wire member having electric wires and a metal shielding member covering the electric wires; a resin case located inside the vehicle interior, having an opening and housing the wire member; and a metal member covering the opening of the resin case, wherein the resin case has a holding portion capable of holding the metal member.

[0010] According to this configuration, the radiation of electromagnetic waves such as so-called electromagnetic noise is suppressed by the metal shielding member covering the electric wires. Furthermore, since the opening of the resin case in which the electric wire members are housed, which is located inside the vehicle, is covered by the metal member, the magnetic field generated by large currents is suppressed from affecting the occupants. In addition, since the metal member functions as a physical cover that prevents the electric wire members from escaping from the resin case by covering the opening of the resin case, it can be made simpler than, for example, a configuration in which a separate resin cover is provided to cover the opening of the resin case. Moreover, since the metal member is held in place by the holding part of the resin case, it can be made smaller than, for example, a configuration in which mounting feet are provided on the metal member and it is fastened to the body with bolts.

[0011] [2] In the above [1], the metal member may be held in the holding portion at a distance from the body. With this configuration, the metal component is held in the holding part while separated from the body, thus preventing force from being applied to the metal component regardless of manufacturing tolerances, for example. In other words, in a configuration where the component is held in the holding part of the resin case while in contact with the body, if the dimensions vary due to manufacturing tolerances, there is a risk that force will remain applied to the metal component between the holding part 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 the body side may be open. According to this configuration, the metal member has a U-shaped cross-section, and since the body side is open, the entire outer circumference of the electric wire member can be surrounded by the body and the metal member. Therefore, the magnetic field generated by the large current effectively suppresses any impact on the occupants.

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

[0014] According to the same configuration, the resin case is formed in a U-shaped cross-sectional shape, with the opposite side of the body being open to form an opening, and the opening is covered by a metal member. Therefore, a metal member is interposed between the passengers in the vehicle interior and the wire member. Thus, it is possible to suppress the magnetic field generated by a large current from affecting the passengers.

[0015] [5] In any one of the above [1] to [4], the shielding member may be constituted by a braided member, and the metal member may be constituted by a metal plate. According to the same configuration, the shielding member is constituted by a braided member, and the metal member is constituted by a metal plate, so that they can have appropriate configurations. That is, since the shielding member is constituted by a braided member, it is possible to preferably suppress the radiation of electromagnetic waves such as so-called electromagnetic noise. In addition, since the metal member is constituted by a metal plate, it is possible to preferably suppress the magnetic field generated by a large current from affecting the passengers.

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

[0017] According to the same configuration, the second wire for low potential paired with the first wire for high potential is housed in the resin case together with the wire member without being covered by the shielding member. Therefore, it is not necessary to use a shielding member for the second wire for low potential unnecessarily, and further, the first wire and the second wire can be preferably arranged by sharing the resin case.

[0018] [7] In any one of the above [1] to [6], the shielding member may have a grounding portion. According to the same configuration, since the shielding member has a grounding portion, it is possible to preferably suppress the radiation of electromagnetic waves such as so-called electromagnetic noise.

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

[0020] [Details of the Embodiment of the Present Disclosure] A specific example of the wire harness of the present disclosure will be described below with reference to the drawings. In each drawing, for convenience of explanation, a part of the configuration may be exaggerated or simplified. Also, the dimensional ratios of each part may be different in each drawing. 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" include not only the strictly parallel and orthogonal cases, but also the cases that are generally orthogonal within the range where the effects of the present embodiment are achieved. Also, "circle" and "arc" in this specification include not only the strictly circular and arc cases, but also the cases that are generally circular and arc within the range where the effects of the present embodiment are achieved.

[0021] (Overall Configuration of Wire Harness 10) The wire harness 10 shown in FIG. 1 electrically connects two or three or more electrical devices. The wire harness 10 is for high voltage, and for example, electrically connects an inverter 11 installed at the front of a vehicle V such as a hybrid vehicle or an electric vehicle, and a high voltage battery 12 installed behind the inverter 11 in the vehicle V.

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

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

[0024] As shown in Figures 2 to 4, the wire harness 10 comprises a group of wires 20 for electrically connecting the electrical devices, a resin case 30, and a metal member 40. (Configuration of the wire group 20) As shown in Figure 4, the wire group 20 has a wire member 21. The wire member 21 has a first wire 22 as a wire for high potential and a metal shield member 23 that covers the first wire 22. The first wire 22 has a core wire 22a and an insulating coating 22b that covers the outer circumference of the core wire 22a. As the core wire 22a, for example, a stranded wire made by twisting together a plurality of metal strands or a single-core wire can be used. The insulating coating 22b is made of an insulating material such as synthetic resin. The shield member 23 is made of a braided member in which a plurality of metal strands are woven into a cylindrical shape. In other words, the wire member 21 is a so-called shielded wire.

[0025] Furthermore, the wire group 20 has a second wire 24 for low potential. The second wire 24 has a core wire 24a and an insulating coating 24b that covers the outer circumference of the core wire 24a. As the core wire 24a, for example, a stranded wire made by twisting together multiple metal strands or a single core wire can be used. The insulating coating 24b is made of an insulating material such as synthetic resin. The second wire 24 is formed to have a smaller diameter than the first wire 22. The core wire 22a of the first 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 wire 24 for low potential is connected to the negative terminal of the high-voltage battery 12.

[0026] Furthermore, as shown in Figure 1, the shield member 23 has a grounding portion 23a. The grounding portions 23a are provided at both ends of the shield member 23 and are grounded by being electrically connected to the metal case or body B, for example, via a connector.

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

[0028] More specifically, as shown in Figure 4, the resin case 30 has a bottom portion 32 facing the body B and a side wall portion 33 that bends and extends from the bottom portion 32. The bottom portion 32 is provided with a fitting portion 34 as a fixing portion. The fitting portions 34 are provided at multiple locations along the length of the resin case 30. When the fitting portions 34 are fitted into the fixing holes Ba provided in the body B, they engage in the disengagement direction and are fixed to the body B.

[0029] Furthermore, as shown in Figure 3, a retaining portion 35 is provided on the side wall portion 33. The retaining portion 35 is provided at multiple locations along the length of the resin case 30. In Figure 3, the retaining portion 35 is shown as being provided only on one side wall portion 33 of the resin case 30, but it may also be provided on the other side wall portion 33. The retaining portion 35 protrudes outward from the side wall portion 33 and has an insertion portion 36 that opens on the opposite side of the body B. The retaining portion 35 also has claws inside (not shown).

[0030] (Composition of metal component 40) As shown in Figures 3 and 4, the metal member 40 has a U-shaped cross-section, with an opening on the body B side. The metal member 40 is made of a metal plate. That is, the metal member 40 is made by punching and bending a metal plate. The metal member 40 is then attached to cover the opening 31 of the resin case 30.

[0031] More specifically, the metal member 40 has a top portion 41 that covers the opening 31 of the resin case 30, and a side portion 42 that bends and extends from the top portion 41 to cover the side wall portion 33 of the resin case 30. Furthermore, as shown in Figure 3, the side portion 42 is provided with retaining pieces 43 that are held by the retaining portion 35 of the resin case 30. The retaining pieces 43 are provided at multiple locations along the length of the metal member 40, corresponding to the retaining portion 35. The retaining pieces 43 are formed to be insertable into the insertion portion 36 by forming a pair of notches 44 that extend from the tip to the base end of the side portion 42. The retaining pieces 43 are also provided with retaining holes 45. When the retaining piece 43 is inserted into the insertion portion 36 of the retaining portion 35, it is held by the retaining portion 35 by the engagement of a claw (not shown) of the retaining portion 35 with the retaining hole 45.

[0032] Furthermore, as shown in Figure 4, the side portion 42 is set to a length that does not come into contact with the body B while the metal member 40 is held in the holding portion 35 of the resin case 30. As a result, the metal member 40 is held in the holding portion 35 while separated from the body B.

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

[0034] The group of electric wires 20, which are located inside the body B and pass over the floor, are covered by a resin case 30 and a metal member 40. Therefore, even if, for example, the wire harness 10 is stepped on by an occupant from above the floor carpet 50, the group of electric wires 20 will not be subjected to force and deformed.

[0035] Next, the effects of the above embodiment are described below. (1) The metal shielding member 23 covering the first electric wire 22 suppresses the radiation of electromagnetic waves such as so-called electromagnetic noise. Furthermore, since the opening 31 of the resin case 30, which is located inside the vehicle and houses the electric wire member 21, is covered by the metal member 40, the magnetic field generated by the large current flowing through the first electric wire 22 of the electric wire member 21 does not affect the occupants. In addition, the metal member 40 functions as a physical cover that prevents the electric wire member 21 from escaping from the resin case 30 by covering the opening 31 of the resin case 30. Therefore, for example, a simpler configuration can be achieved compared to a configuration in which a separate resin cover is provided to cover the opening 31 of the resin case 30. Furthermore, since the metal member 40 is held in the holding part 35 of the resin case 30, it can be made smaller compared to a configuration in which, for example, mounting feet are provided on the metal member 40 and it is fastened to the body with bolts.

[0036] (2) Since the metal member 40 is held by the holding part 35 in a state separated from the body B, it is possible to suppress the application of force to the metal member 40 regardless of manufacturing tolerances, etc. That is, for example, in a configuration in which the metal member 40 is held by the holding part 35 of the resin case 30 while in contact with the body B, if the dimensions vary due to manufacturing tolerances, etc., there is a risk that force will remain applied to the metal member 40 between the holding part 35 and the body B, but this can be avoided.

[0037] (3) The metal member 40 has a U-shaped cross-section, with an opening on the body B side. Therefore, the entire outer circumference of the electric wire member 21 can be surrounded by the body B and the metal member 40. Thus, the magnetic field generated by the large current is effectively suppressed from affecting the occupants.

[0038] (4) The resin case 30 has a U-shaped cross-section, and the opposite side of the body B is open to form an opening 31, and this opening 31 is covered by the metal member 40, so that the metal member 40 is interposed between the passenger inside the vehicle and the electric wire member 21. Therefore, the magnetic field generated by the large current does not affect the passenger.

[0039] (5) Since the shield member 23 is made of a braided material and the metal member 40 is made of a metal plate, each can be configured appropriately. That is, since the shield member 23 is made of a braided material, it can effectively suppress the radiation of electromagnetic waves such as so-called electromagnetic noise. Also, since the metal member 40 is made of a metal plate, it can effectively suppress the effect of magnetic fields generated by large currents on passengers.

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

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

[0042] This embodiment can be implemented with the following modifications. This embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically. In the above embodiment, the metal member 40 is held by the holding portion 35 while separated from the body B. However, the embodiment is not limited to this, and for example, it may be held by the holding portion 35 of the resin case 30 while a part of it is in contact with the body B.

[0043] In the above embodiment, the metal member 40 is formed with a U-shaped cross-section and is open on the body B side, but it is not limited to this and may be changed to other shapes or provided to open in other directions.

[0044] In the above embodiment, the resin case 30 is formed with a U-shaped cross-section and is open on the opposite side of the body B, but it is not limited to this and may be changed to other shapes or provided to open in other directions.

[0045] In the above embodiment, the shield member 23 is made of a braided member and the metal member 40 is made of a metal plate, but these can be changed to other configurations. For example, the shield member 23 may be made of metal foil or the like. Also, for example, the metal member 40 may be changed to a casting or the like that having parts of different thicknesses.

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

[0047] In the above embodiment, the resin case 30 has a fitting portion 34 as a fixing portion that is fixed to the body B, but it is not limited to this and may be changed to other configurations. For example, the fixing portion may be a mounting foot that is fastened to the body B with bolts or the like. Alternatively, 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 is used to electrically connect the inverter 11 and the high-voltage battery 12, but it is not limited to this and may be used to electrically connect other electrical equipment.

[0049] In the above embodiment, the wire harness 10 is implemented to correspond to a high-voltage battery 12 of several hundred volts, but it may also be implemented to correspond to other high-voltage wire harnesses that correspond to voltages from 60 volts to 600 volts. [Explanation of Symbols]

[0050] 10 Wire Harnesses 11 Inverter 12 High-voltage batteries 20 wire group 21 Wire components 22. First power line 22a Core wire 22b Insulation coating 23 Shielding member 23a Grounding part 24. Second power line 24a core wire 24b Insulation coating 30 resin cases 31 Opening 32 Bottom 33 Side wall section 34 Fitting part 35 Holding part 36 Insertion part 40 Metal components 41 Top 42 Side 43 Holding piece 44 Notches 45 Retaining hole 50 Floor Carpet B Body Ba fixing hole V Vehicle

Claims

1. A high-voltage wire harness, at least partially located inside the vehicle's interior, which is separated from the outside by the vehicle's body, A wire member having a wire and a metal shielding member covering the wire, A resin case is placed inside the vehicle interior, has an opening, and houses the electric wire member. The resin case comprises a metal member that covers the opening of the resin case and covers the side wall of the resin case, The resin case has a holding portion capable of holding the metal member, The side tip of the metal member is formed to be located closer to the body than the inner bottom surface of the resin case. Wire harness.

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

3. The metal member has a U-shaped cross-section, with the body side being open. The wire harness according to claim 1.

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

5. The shield member is made of a braided member, The aforementioned metal member is made of a metal plate. The wire harness according to claim 1.

6. The aforementioned wire is a first wire for high potential, Furthermore, it includes a second low-potential wire that is housed in the resin case together with the wire member without being covered by the shielding member. The wire harness according to claim 1.

7. The shield member has a grounding portion. The wire harness according to claim 1.

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

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