Wire harness

Abstract

One embodiment of the present invention provides a wire harness capable of suppressing the influence of a magnetic field with a simple structure. At least a portion of the wire harness (10) is disposed in a vehicle interior that is distinguished from the outside of the vehicle by a vehicle body (B) of the vehicle. A wire harness (10) is provided with: an electric wire member (21) having a first electric wire (22) and a metal shield member (23) covering the first electric wire (22); a resin case (30) that is disposed in the vehicle interior, has an opening (31), and houses the electric wire member (21); and a metal member (40) that covers the opening (31) of the resin case (30). The resin case (30) has a holding part (35) capable of holding the metal member (40).

Description

Technical Field

[0001] The present invention relates to a wiring harness. Background Art

[0002] Conventionally, for example, hybrid vehicles and electric vehicles are equipped with high voltage wiring harnesses. As such wiring harnesses, there are wiring harnesses arranged so as to pass outside the vehicle body and under the so-called floor (for example, see Patent Document 1). In such wiring harnesses, since the vehicle body is interposed between the wiring harness and the passenger, the magnetic field generated by the large current can be suppressed from affecting the passenger. Prior art literature Patent Literature

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

[0004] However, when the high voltage harness as described above is arranged to pass through the interior of the vehicle such as on the so-called floor, there is a possibility that the magnetic field generated by the large current may affect the passengers unless any countermeasures are taken.

[0005] An object of the present invention is to provide a wiring harness capable of suppressing the influence of a magnetic field with a simple structure. Solutions to Solve Problems

[0006] The wiring harness of the present invention is a high voltage wiring harness at least partly arranged in a vehicle interior distinguished from the outside of the vehicle by the vehicle body, and comprises: a wire component having wires and a metal shielding component covering the wires; a resin shell arranged in the vehicle interior, having an opening and accommodating the wire component; and a metal component covering the opening of the resin shell, the resin shell having a retaining portion capable of retaining the metal component. Effects of the Invention

[0007] According to the wire harness of the present invention, the influence of the magnetic field can be suppressed with a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic configuration diagram showing a wire harness according to an embodiment. Figure 2 This is a partial perspective view of a wire harness according to an embodiment. Figure 3 This is a partially exploded perspective view of a wire harness according to an embodiment. Figure 4 is along Figure 2 A cross-sectional view of line 4-4. DETAILED DESCRIPTION

[0009] [Description of Embodiments of the Invention] First, embodiments of the present invention will be described by way of examples. The wiring harness of the present invention, [1] A high voltage wiring harness at least partially disposed in a vehicle interior that is separated from the exterior of the vehicle by a vehicle body, comprising: a wire component having wires and a metal shielding component covering the wires; a resin shell disposed in the vehicle interior, having an opening and accommodating the wire component; and a metal component covering the opening of the resin shell, the resin shell having a retaining portion capable of retaining the metal component.

[0010] According to this structure, the radiation of electromagnetic waves such as so-called electromagnetic noise is suppressed by the metal shielding member covering the electric wire. In addition, the opening of the resin housing that is arranged in the vehicle interior and accommodates the electric wire member is covered by the metal member, so that the magnetic field generated by the large current can be suppressed from affecting the passengers. In addition, the metal member functions as a physical cover that prevents the electric wire member from detaching from the resin housing by covering the opening of the resin housing, so that, for example, a simple structure can be formed compared with a structure that is separately provided with a resin cover covering the opening of the resin housing. In addition, the metal member is held by the holding portion of the resin housing, so that, for example, miniaturization can be achieved compared with a structure in which, for example, an assembly leg is provided on the metal member and it is tightened and fixed to the vehicle body with bolts.

[0011] [2] In the above [1], the metal member may be held by the holding portion in a state separated from the vehicle body. According to this structure, the metal member is held by the holding portion in a state separated from the vehicle body, and therefore, it is possible to suppress the force applied to the metal member regardless of, for example, manufacturing errors, etc. That is, for example, in a structure in which the holding portion is held by the resin case and abuts against the vehicle body, if the dimensions vary due to manufacturing errors, etc., there is a possibility that a force is still applied to the metal member between the holding portion and the vehicle body, but this can be avoided.

[0012] [3] In the above [1] or [2], the cross-sectional shape of the metal member may be formed into a U-shape, and the metal member may be open on a side facing the vehicle body. According to this structure, the cross-sectional shape of the metal member is formed into a U-shape, and the metal member is open on the side opposite to the vehicle body, so that the entire periphery of the wire member can be surrounded by the vehicle body and the metal member. Therefore, the magnetic field generated by the large current can be effectively suppressed from affecting the passengers.

[0013] [4] In any one of the above [1] to [3], the cross-sectional shape of the resin case may be formed into a U-shape, and the resin case may have the opening on the side opposite to the vehicle body. According to this structure, the cross-sectional shape of the resin case is formed into a U-shape, and the resin case has an opening on the side opposite to the vehicle body, and the opening is covered by the metal member, so that the metal member is interposed between the passengers in the vehicle compartment and the wire member. Therefore, the magnetic field generated by the large current can be suppressed from affecting the passengers.

[0014] [5] In any one of the above [1] to [4], the shield member may be formed of a braided member, and the metal member may be formed of a metal plate. According to this structure, the shielding member is composed of a braided member, and the metal member is composed of a metal plate, so that each can be formed into an appropriate structure. That is, the shielding member is composed of a braided member, so the radiation of electromagnetic waves such as so-called electromagnetic noise can be appropriately suppressed. In addition, the metal member is composed of a metal plate, so the magnetic field generated by the large current can be appropriately suppressed from affecting the passengers.

[0015] [6] In any one of [1] to [5] above, the electric wire may be a first electric wire for high potential and further include a second electric wire for low potential, wherein the second electric wire is not covered by the shielding member and is housed in the resin housing together with the electric wire member.

[0016] According to this structure, the second electric wire for low potential paired with the first electric wire for high potential is not covered by the shielding member, but is housed in the resin housing together with the electric wire member. Therefore, the shielding member is not wastefully used in the second electric wire for low potential, and the resin housing can be shared to appropriately lay out the first electric wire and the second electric wire.

[0017] [7] In any of the above [1] to [6], the shield member may also have a ground portion. According to this configuration, since the shield member has the ground portion, the radiation of electromagnetic waves such as so-called electromagnetic noise can be appropriately suppressed.

[0018] [8] In any one of the above [1] to [7], the resin case may have a fixing portion fixed to the vehicle body. According to this structure, since the resin case has the fixing portion fixed to the vehicle body, it can be easily fixed to the vehicle body.

[0019] [Details of Embodiments of the Invention] Specific examples of the wiring harness of the present invention are described below with reference to the accompanying drawings. In each of the drawings, for the sake of convenience of description, a part of the structure is sometimes enlarged or simplified. In addition, the size ratios of the various parts are sometimes different in each of the drawings. In addition, the present invention is not limited to these examples, but is shown in the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. "Parallel" or "orthogonal" in this specification includes not only the case of being strictly parallel or orthogonal, but also the case of being approximately orthogonal within the range of the effect of the present embodiment. In addition, "circle" or "arc" in this specification includes not only the case of being strictly circle or arc, but also the case of being approximately circle or arc within the range of the effect of the present embodiment.

[0020] (Overall Structure of Wiring Harness 10) Figure 1 The wiring harness 10 shown electrically connects two or more electrical devices. The wiring harness 10 is used for high voltage, for example, to electrically connect an inverter 11 provided at the front of a vehicle V such as a hybrid vehicle or electric vehicle with a high-voltage battery 12 provided at the rear of the vehicle V.

[0021] The inverter 11 is connected to an electric motor (not shown) for driving wheels, which is a power source for the vehicle. The inverter 11 generates AC power from DC power of a high-voltage battery 12 and supplies the AC power to the electric motor. The high-voltage battery 12 can supply, for example, a battery with a voltage of several hundred volts.

[0022] At least a portion of the wire harness 10 is arranged in a vehicle interior that is distinguished from the outside of the vehicle by the vehicle body B of the vehicle V. The wire harness 10 of the present embodiment is arranged to pass through the outside of the vehicle body B and the so-called underfloor at the rear of the vehicle V, and is arranged to pass through the inside of the vehicle body B and the so-called floor from the center to the front of the vehicle V. That is, the wire harness 10 is laid out to pass through the floor that is the inside of the vehicle body B at a portion corresponding to the driver's seat or the front passenger seat.

[0023] like Figures 2 to 4 As shown, the wire harness 10 includes an electric wire group 20 for electrically connecting the above-mentioned electrical devices to each other, a resin case 30 , and a metal member 40 . (Structure of the Electric Wire Group 20) like Figure 4As shown, the electric wire group 20 has an electric wire component 21. The electric wire component 21 has a first electric wire 22 as an electric wire for high potential and a metal shielding component 23 covering the first electric wire 22. The first electric wire 22 has a core wire 22a and an insulating coating 22b covering the outer periphery of the core wire 22a. As the core wire 22a, for example, a stranded wire or a single core wire formed by twisting a plurality of metal wires can be applied. The insulating coating 22b is composed of an insulating material such as a synthetic resin, for example. The shielding component 23 is composed of a braided component in which a plurality of metal wires are braided into a cylindrical shape. That is, the electric wire component 21 is a so-called shielded electric wire.

[0024] In addition, the electric wire group 20 has a second electric wire 24 for low potential. The second electric wire 24 has a core wire 24a and an insulating coating 24b covering the outer periphery of the core wire 24a. As the core wire 24a, for example, a stranded wire or a single core wire formed by twisting a plurality of metal wires can be used. The insulating coating 24b is made of an insulating material such as a synthetic resin, for example. The diameter of the second electric wire 24 is formed thinner than that of the first electric wire 22. In addition, 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.

[0025] In addition, if Figure 1 As shown in FIG. 1 , the shield member 23 has a grounding portion 23a. The grounding portion 23a is provided at both ends of the shield member 23 and is grounded by being electrically connected to a metal housing or a vehicle body B via a connector or the like, for example.

[0026] (Structure of Resin Case 30) like Figure 3 and Figure 4 As shown, the cross-sectional shape of the resin case 30 is formed into a U-shape, and the resin case 30 has an opening 31 on the side opposite to the vehicle body B. The resin case 30 of this embodiment is formed long along the front-rear direction of the vehicle V in order to accommodate the wire group 20 laid along the front-rear direction of the vehicle V.

[0027] In detail, Figure 4 As shown, the resin case 30 has a bottom 32 facing the vehicle body B and a side wall portion 33 extending in a bent manner from the bottom 32. An embedding portion 34 as a fixing portion is provided on the bottom 32. The embedding portion 34 is provided at multiple locations in the longitudinal direction of the resin case 30. The embedding portion 34 is fixed to the vehicle body B by engaging in the falling direction when being embedded in the fixing hole Ba provided on the vehicle body B.

[0028] In addition, if Figure 3 As shown in FIG. 1 , a holding portion 35 is provided on the side wall portion 33. The holding portion 35 is provided at multiple locations in the longitudinal direction of the resin housing 30. Figure 3In the figure, although the holding portion 35 is shown to be provided only on one side wall portion 33 of the resin case 30, it may be provided on the other side wall portion 33. The holding portion 35 has an insertion portion 36 that extends outward from the side wall portion 33 and opens on the opposite side of the vehicle body B. In addition, the holding portion 35 has a claw (not shown) inside.

[0029] (Structure of Metal Member 40) like Figure 3 and Figure 4 As shown, the cross-sectional shape of the metal member 40 is formed into a U-shape, and the metal member 40 is open on the side opposite to the vehicle body B. The metal member 40 is formed of a metal plate. That is, the metal member 40 is formed by punching and bending the metal plate. In addition, the metal member 40 is assembled in a manner covering the opening 31 of the resin case 30.

[0030] Specifically, the metal member 40 includes a top portion 41 that covers the opening 31 of the resin case 30 and a side portion 42 that extends in a bent manner from the top portion 41 and covers the side wall portion 33 of the resin case 30 . In addition, if Figure 3 As shown, a retaining piece 43 is provided on the side portion 42, and the retaining piece 43 is retained by the retaining portion 35 of the resin housing 30. The retaining piece 43 is provided at a position corresponding to the retaining portion 35 and at multiple locations in the length direction of the metal member 40. The retaining piece 43 is formed to be inserted into the insertion portion 36 by forming a pair of notches 44 extending from the top end of the side portion 42 to the base end side. In addition, a retaining hole 45 is provided in the retaining piece 43. When the retaining piece 43 is inserted into the insertion portion 36 of the retaining portion 35, the claw (not shown) of the retaining portion 35 engages with the retaining hole 45, thereby being retained by the retaining portion 35.

[0031] In addition, if Figure 4 As shown, the side portion 42 is set to a length that does not abut against the vehicle body B when the metal member 40 is held by the holding portion 35 of the resin case 30. Thus, the metal member 40 is held by the holding portion 35 in a state separated from the vehicle body B.

[0032] And, if Figure 4 As shown, a carpet 50 is disposed above the metal member 40 , for example. The operation of the above-described embodiment will be described.

[0033] The wire group 20 passing through the inner side of the vehicle body B and the so-called floor is covered by the resin case 30 and the metal member 40. Therefore, for example, even if the wire harness 10 is stepped on by a passenger from the carpet 50, force is prevented from being applied to the wire group 20 to deform it.

[0034] Next, the effects of the above-described embodiment will be described below. (1) The radiation of electromagnetic waves such as so-called electromagnetic noise is suppressed by the metal shield member 23 covering the first electric wire 22. In addition, the opening 31 of the resin case 30 that is arranged in the vehicle interior and accommodates the electric wire member 21 is covered by the metal member 40, so that the magnetic field generated by the large current flowing in the first electric wire 22 of the electric wire member 21 can be suppressed from affecting the rider. In addition, the metal member 40 functions as a physical cover that prevents the electric wire member 21 from being separated from the resin case 30 by covering the opening 31 of the resin case 30. Therefore, a simple structure can be formed compared with, for example, a structure that separately includes a resin cover covering the opening 31 of the resin case 30. In addition, the metal member 40 is held by the holding portion 35 of the resin case 30, so that, for example, a structure in which an assembly leg is provided on the metal member 40 and is fastened to the vehicle body by bolts can be miniaturized.

[0035] (2) The metal member 40 is held by the holding portion 35 in a state separated from the vehicle body B, so that, for example, the force applied to the metal member 40 can be suppressed regardless of manufacturing errors or the like. That is, for example, in a structure in which the metal member 40 is held by the holding portion 35 of the resin case 30 and abuts against the vehicle body B, if the dimensions vary due to manufacturing errors or the like, there is a possibility that a force is still applied to the metal member 40 between the holding portion 35 and the vehicle body B, but this can be avoided.

[0036] (3) The cross-sectional shape of the metal member 40 is formed into a U-shape, and the metal member 40 is open on the side facing the vehicle body B. Therefore, the entire periphery of the electric wire member 21 can be surrounded by the vehicle body B and the metal member 40. Therefore, the magnetic field generated by the large current can be effectively suppressed from affecting the passengers.

[0037] (4) The cross-sectional shape of the resin case 30 is formed into a U-shape, and the resin case 30 has an opening 31 on the side opposite to the vehicle body B. The opening 31 is covered by the metal member 40, so that the metal member 40 is interposed between the passenger in the vehicle compartment and the wire member 21. Therefore, the magnetic field generated by the large current can be suppressed from affecting the passenger.

[0038] (5) The shielding member 23 is made of a braided member, and the metal member 40 is made of a metal plate, so they can be formed into suitable structures. That is, the shielding member 23 is made of a braided member, so it can appropriately suppress the radiation of electromagnetic waves such as so-called electromagnetic noise. In addition, the metal member 40 is made of a metal plate, so it can appropriately suppress the magnetic field generated by the large current from affecting the passengers.

[0039] (6) The second electric wire 24 for low potential that is paired with the first electric wire 22 for high potential is not covered by the shielding member 23, and is housed in the resin case 30 together with the electric wire member 21. Therefore, the shielding member 23 is not wastefully used for the second electric wire 24 for low potential, and the resin case 30 can be shared to appropriately lay out the electric wire member 21 including the first electric wire 22 and the second electric wire 24.

[0040] (7) Since the shield member 23 has the ground portion 23 a , it is possible to appropriately 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 fixed to the vehicle body B, and can be easily fixed to the vehicle 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 vehicle body B simply by fitting.

[0041] This embodiment can be implemented as the following modifications. This embodiment and the following modifications can be implemented in combination with each other within the range that there is no technical contradiction. In the above embodiment, the metal member 40 is held by the holding portion 35 in a state separated from the vehicle body B, but the present invention is not limited thereto. For example, the metal member 40 may be held by the holding portion 35 of the resin case 30 while a portion thereof abuts against the vehicle body B.

[0042] In the above embodiment, the cross-sectional shape of the metal member 40 is formed into a U-shape and the metal member 40 is open on the side facing the vehicle body B. However, the present invention is not limited thereto and may be changed to another shape or may be provided so as to be open in another direction.

[0043] In the above embodiment, the cross-sectional shape of the resin case 30 is formed into a U-shape and the resin case 30 is opened on the side opposite to the vehicle body B. However, the present invention is not limited thereto and may be changed to another shape or may be provided so as to be opened in another direction.

[0044] In the above embodiment, the shielding member 23 is composed of a braided member and the metal member 40 is composed of a metal plate, but each may be changed to another structure. For example, the shielding member 23 may be composed of a metal foil or the like. In addition, for example, the metal member 40 may be changed to a casting having portions with different thicknesses or the like.

[0045] In the above embodiment, the second low-potential electric wire 24 paired with the first high-potential electric wire 22 is not covered by the shielding member 23 and is housed in the resin case 30 together with the electric wire member 21, but the present invention is not limited thereto, and the second electric wire 24 may also be covered by the shielding member. In addition, of course, other electric wires such as signal wires other than the first electric wire 22 and the second electric wire 24 may also be housed in the resin case 30.

[0046] In the above embodiment, the resin case 30 has the fitting portion 34 as a fixing portion fixed to the vehicle body B, but the present invention is not limited thereto and may be changed to another structure. For example, the fixing portion may be formed as an assembly leg fastened to the vehicle body B with a bolt or the like. In addition, the resin case 30 may not have a fixing portion fixed to the vehicle body B, and may be fixed to another member fixed to the vehicle body B, for example.

[0047] In the above embodiment, the wiring harness 10 electrically connects the inverter 11 and the high-voltage battery 12 , but the present invention is not limited thereto and other electrical devices may be electrically connected.

[0048] In the above embodiment, the wiring harness 10 is embodied to correspond to the high-voltage battery 12 of several hundred volts, but it may be embodied to correspond to other high-voltage wiring harnesses of 60 volts to 600 volts.

[0049] The present invention includes the following embodiments. In addition, reference numerals representing components of the above-described embodiments are given for the purpose of not limiting but only to facilitate understanding. (Note 1) A wiring harness (10) for high voltage, at least a portion of which is arranged in a vehicle interior that is separated from the exterior by a vehicle body (B) of a vehicle (V), comprising: An electric wire component (21) comprising an electric wire (22) and a metal shielding component (23) covering the electric wire; A resin housing (30) is disposed in the vehicle interior and accommodates the electric wire component (21); and a metal member (40) covering the resin housing, The resin case (30) includes a bottom (32) in contact with the vehicle body (B), a pair of side walls (33) extending in a bent manner from the bottom, and an opening (31) located on a side opposite to the bottom (32). The metal component (40) includes a top portion (41) and a pair of side portions (42), wherein the top portion (41) covers the opening portion (31) of the resin housing (30), and the pair of side portions (42) extend from the top portion in a bent manner and contact the outer surfaces of the pair of side wall portions (33) of the resin housing (30). The outer periphery of the electric wire member (21) arranged in the vehicle interior is entirely surrounded by the vehicle body (B), the pair of side portions (42) of the metal member (40), and the top portion (41) of the metal member (40).

[0050] According to such a configuration, the four sides around the electric wire member arranged in the vehicle interior, that is, the entire outer circumference of the electric wire member are covered with metal, so that the magnetic field generated by the current flowing through the electric wire member can be suppressed. Description of Reference Numerals

[0051] 10 Wire Harness 11Inverter 12 High Voltage Batteries 20 wire sets 21 Wire components 22 1st Wire 22a core wire 22b Insulation coating 23 Shielding member 23a Grounding part 24 2nd Wire 24a core wire 24b insulation coating 30 resin shell 31 Opening 32 bottom 33 side wall 34 Flush-mounted part 35. Maintaining part 36 Insertion 40Metal components 41 Top 42 Side 43 holding piece 44 Gap 45 holding holes 50 Carpet B-body Ba fixing hole Vehicles

Claims

1. A wiring harness, at least a portion of which is arranged in a vehicle interior that is separated from the exterior by a vehicle body, for high voltage, comprising: An electric wire member including an electric wire and a metal shield member covering the electric wire; a resin case disposed in the vehicle interior, having an opening and housing the electric wire member; and a metal member covering the opening of the resin case, The resin case has a holding portion capable of holding the metal member.

2. The wire harness according to claim 1, wherein: The metal member is held by the holding portion in a state of being separated from the vehicle body.

3. The wire harness according to claim 1, wherein: The metal member has a U-shaped cross section, and is open on a side facing the vehicle body.

4. The wire harness according to claim 1, wherein: The resin case has a U-shaped cross-sectional shape, and has the opening on a side opposite to the vehicle body.

5. The wire harness according to claim 1, wherein The shielding member is composed of a braided member, The metal member is formed of a metal plate.

6. The wire harness according to claim 1, wherein The electric wire is a first electric wire for high potential, A second electric wire for low potential is further provided. The second electric wire is not covered by the shield member and is accommodated in the resin case together with the electric wire member.

7. The wire harness according to claim 1, wherein: The shielding member has a grounding portion.

8. The wire harness according to claim 1, wherein The resin case has a fixing portion fixed to the vehicle body.

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