Wiring harness unit

Abstract

The wiring harness unit comprises: a first electric wire; a first cylindrical member covering the first electric wire; a rubber member mounted on the outer peripheral surface of the first cylindrical member; a bracket having a first fixing portion supporting the first cylindrical member by means of the rubber member; and a fastening member surrounding and fastening the rubber member and the first fixing portion, wherein the first cylindrical member is made of metal having a first metal as a main component, and the bracket is made of metal having a second metal different from the first metal as a main component.

Description

Technical Field

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

[0002] Conventionally, as a structure for fixing a wire harness to a vehicle, for example, there is a structure having a belt-shaped clip arranged so as to be wound around the outer circumference of the wire harness, with both ends of the clip overlapping and fastened to a bracket with bolts (see, for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 11-210934 Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, as the above-mentioned wiring harness, for example, sometimes consists of electric wires and a cylindrical metal pipe covering the electric wires. And, for example, when the metal pipe and the clip are made of different types of metals, there is a problem that electric corrosion is easily caused by the direct contact between the metal pipe and the clip.

[0008] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a wire harness unit capable of suppressing the occurrence of corrosion.

[0009] Solutions to Solve Problems

[0010] The wiring harness unit of the present disclosure includes: a first electric wire; a first cylindrical member that covers the first electric wire; a rubber member that is mounted on the outer peripheral surface of the first cylindrical member; a bracket that has a first fixing portion that supports the first cylindrical member via the rubber member; and a fastening member that surrounds and fastens the rubber member and the first fixing portion, wherein the first cylindrical member is made of metal having a first metal as a main component, and the bracket is made of metal having a second metal that is different from the first metal as a main component.

[0011] Effects of the Invention

[0012] According to the wire harness unit of the present disclosure, the occurrence of corrosion can be suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 1 is a schematic diagram showing a vehicle in which a wire harness unit according to an embodiment is arranged.

[0014] Figure 2 This is a partial perspective view of a harness unit in one embodiment.

[0015] Figure 3This is a partial perspective view of a harness unit in one embodiment.

[0016] Figure 4 This is a partial cross-sectional view of a wire harness unit in one embodiment. DETAILED DESCRIPTION

[0017] [Description of Embodiments of the Present Disclosure]

[0018] First, embodiments of the present disclosure will be described below.

[0019] The wiring harness unit of the present disclosure,

[0020] [1] comprising: a first electric wire; a first cylindrical member covering the first electric wire; a rubber member mounted on an outer peripheral surface of the first cylindrical member; a bracket having a first fixing portion supporting the first cylindrical member via the rubber member; and a fastening member surrounding and fastening the rubber member and the first fixing portion, wherein the first cylindrical member is made of a metal having a first metal as a main component, and the bracket is made of a metal having a second metal different from the first metal as a main component.

[0021] According to this structure, since the first cylindrical member is made of a metal whose main component is the first metal, and the bracket is made of a metal whose main component is the second metal of a different type from the first metal, corrosion is likely to occur when, for example, the first cylindrical member and the bracket are in direct contact with each other, but since the first cylindrical member and the bracket are in a structure where they are not in direct contact with each other with the aid of a rubber member, corrosion is unlikely to occur.

[0022] [2] Preferably, the first fixing portion includes an engaging portion that can engage with the fastening member in the longitudinal direction of the first cylindrical member.

[0023] According to this configuration, since the first fixing portion includes the engaging portion that can engage with the fastening member in the longitudinal direction of the first cylindrical member, it is possible to prevent the fastening member from being displaced relative to the first fixing portion.

[0024] [3] Preferably, the first fixing portion includes a first piece, a second piece extending in a curved manner from the first piece, and a through hole spanning the first piece and the second piece, and the engaging portion includes an inner wall surface of the through hole.

[0025] According to this structure, since the first fixing portion includes the first piece, the second piece extending in a curved manner from the first piece, and the through hole spanning the first piece and the second piece, and the engaging portion includes the inner wall surface of the through hole, the fastening member can prevent displacement relative to the first fixing portion by engaging with the inner wall surface of the through hole.

[0026] [4] Preferably, the first fixing portion includes a first piece and a second piece extending in a curved manner from the first piece, the first piece includes a first recessed portion provided at an end portion on a side opposite to the second piece, and the engaging portion includes an inner wall surface of the first recessed portion.

[0027] According to this structure, since the first fixing portion includes the first piece and the second piece extending in a curved manner from the first piece, the first piece includes the first recessed portion provided at the end portion on the side opposite to the second piece, and the engaging portion includes the inner wall surface of the first recessed portion, the fastening member can be prevented from being misaligned relative to the first fixing portion by engaging with the inner wall surface of the first recessed portion.

[0028] [5] Preferably, the second sheet has a second recessed portion provided at an end portion on the opposite side to the first sheet, and the engaging portion includes an inner wall surface of the second recessed portion.

[0029] According to this structure, since the second piece has the second recessed portion provided at the end portion on the opposite side to the first piece, and the engaging portion includes the inner wall surface of the second recessed portion, the fastening member can be further prevented from being misaligned with respect to the first fixing portion by engaging with the inner wall surface of the second recessed portion.

[0030] [6] Preferably, the bracket further includes a second electric wire and a second cylindrical member covering the second electric wire, and the bracket includes a second fixing portion supporting the second cylindrical member and a connecting portion connecting the first fixing portion and the second fixing portion.

[0031] According to this structure, since the bracket has the second fixing portion supporting the second cylindrical member and the connecting portion connecting the first fixing portion and the second fixing portion, the first cylindrical member and the second cylindrical member can be supported by one bracket, for example, the first cylindrical member and the second cylindrical member can be centrally fixed to the vehicle by means of the bracket.

[0032] [7] Preferably, the connecting portion has a bent portion.

[0033] According to this configuration, since the connection portion has the bent portion, for example, the first cylindrical member and the second cylindrical member can be fixed in accordance with a complicated arrangement space.

[0034] [Details of the embodiments of the present disclosure]

[0035] The following is a reference to the attached Figure 1A specific example of the wiring harness unit disclosed in the present invention is described. In each of the drawings, for the sake of convenience of description, a part of the structure is sometimes exaggerated or simplified. In addition, the size ratios of the various parts are sometimes different in each of the drawings. The "parallel" and "orthogonal" in this specification include not only the cases of being strictly parallel and orthogonal, but also the cases of being roughly parallel and orthogonal within the range of the effect of the present embodiment. In addition, the present invention is not limited to these examples, but is shown by the claims, and is intended to include all changes within the meaning and scope equivalent to the claims.

[0036] (Schematic Structure of Harness Unit 10)

[0037] Figure 1 The wiring harness unit 10 shown electrically connects two on-board devices mounted on a vehicle V. The vehicle V is, for example, a hybrid vehicle, an electric vehicle, etc. The wiring harness unit 10 electrically connects an on-board device M1 and an on-board device M2. The wiring harness unit 10 is laid out from the on-board device M1 to the on-board device M2 in a manner such that a portion of the wiring harness unit 10 in the length direction passes under the floor of the vehicle V. As an example of the on-board device M1 and the on-board device M2, the on-board device M1 includes an inverter disposed near the front of the vehicle V, and the on-board device M2 includes a high-voltage battery disposed at the rear of the vehicle V relative to the on-board device M1. The inverter included in the on-board device M1 is connected to, for example, an electric motor (not shown) for driving wheels that is a power source for the vehicle to travel. The inverter generates alternating current from the direct current of the high-voltage battery and supplies the alternating current to the electric motor. The high-voltage battery included in the on-board device M2 is, for example, a battery capable of supplying a voltage of more than 100 volts.

[0038] (Detailed Structure of the Harness Unit 10)

[0039] like Figure 2 As shown, the harness unit 10 includes a first electric wire 11 , a second electric wire 12 , a metal pipe 13 as a first cylindrical member, a corrugated tube 14 as a second cylindrical member, a rubber member 15 , a bracket 16 , a tightening band 17 as a tightening member, and an adhesive tape 18 .

[0040] The first electric wire 11 is composed of, for example, a pair of electric wires for high potential and low potential. The second electric wire 12 is, for example, an electric wire for flowing a current of a system different from that of the first electric wire 11 and is composed of a pair of electric wires for high potential and low potential.

[0041] The metal pipe 13 is made of a metal having aluminum as a first metal as a main component. The metal constituting the metal pipe 13 is selected based on its rigidity, weight, cost, etc. The metal pipe 13 is provided so as to cover the first electric wire 11. In other words, the first electric wire 11 is provided so as to pass through the metal pipe 13.

[0042] The corrugated tube 14 is made of resin. The corrugated tube 14 is in the shape of a tube with both ends opened in the longitudinal direction. The corrugated tube 14 has a corrugated structure in which the diameter is repeated along the longitudinal direction. The corrugated tube 14 is configured to be easily bent compared to the metal tube 13 and the like. The corrugated tube 14 is provided in a manner covering the second electric wire 12. In other words, the second electric wire 12 is provided in a manner passing through the corrugated tube 14.

[0043] The rubber member 15 is made of EPDM (ethylene-propylene-diene rubber in detail). The rubber member 15 is formed into a sheet shape. The rubber member 15 is mounted on the outer peripheral surface of the metal pipe 13. Specifically, the rubber member 15 is wound around the outer peripheral surface of a portion of the metal pipe 13 in the longitudinal direction.

[0044] The bracket 16 is made of a metal having iron as a main component, which is a second metal different from the first metal. The metal constituting the bracket 16 is selected based on its rigidity, weight, cost, etc. The bracket 16 is formed by bending a metal plate. The bracket 16 has a first fixing portion 21, a second fixing portion 22, and a connecting portion 23 connecting the first fixing portion 21 and the second fixing portion 22.

[0045] like Figure 3 and Figure 4 As shown in FIG. 1 , the first fixing portion 21 supports the metal pipe 13 via the rubber member 15. The first fixing portion 21 includes a first piece 21a and a second piece 21b extending in a curved manner from the first piece 21a. Specifically, the first piece 21a is formed continuously with one end of the connecting portion 23, and extends from the connecting portion 23 toward the vehicle V (see FIG. 1 ). Figure 1 ) is formed to extend in directions corresponding to both the front side and the rear side of the metal pipe 13. The second piece 21b is provided at both ends of the length direction of the first piece 21a. The second piece 21b is bent and extended from the first piece 21a in order to support two circumferential locations of the outer peripheral surface of the metal pipe 13 together with the first piece 21a.

[0046] The tightening band 17 surrounds and tightens the rubber member 15 and the first fixing portion 21. That is, the metal pipe 13 is supported by the first fixing portion 21 via the rubber member 15, and the tightening band 17 is wound around the rubber member 15 and the first fixing portion 21 to maintain this state. The tightening band 17 is provided at two locations corresponding to the locations where the second sheet 21b is provided.

[0047] In addition, the first fixing portion 21 has a snap-fitting portion 24 that can snap-fit ​​with the tightening belt 17 in the length direction of the metal pipe 13. In detail, the first fixing portion 21 has a through hole 21c that spans the first piece 21a and the second piece 21b. And the snap-fitting portion 24 includes an inner wall surface 21d of the through hole 21c. In addition, the first piece 21a has a first recess 21e provided at an end portion on the side opposite to the second piece 21b. And the snap-fitting portion 24 includes an inner wall surface 21f of the first recess 21e. In addition, the second piece 21b has a second recess 21g provided at an end portion on the side opposite to the first piece 21a. And the snap-fitting portion 24 includes an inner wall surface 21h of the second recess 21g. That is, the tightening belt 17 is arranged so as to surround and tighten the rubber member 15 and the first fixing portion 21 and enter the inner side of the through hole 21c, the first recess 21e and the second recess 21g, and can be engaged with the inner wall surfaces 21d, 21f, 21h of the through hole 21c, the first recess 21e and the second recess 21g.

[0048] like Figure 2 As shown, the second fixing portion 22 supports the corrugated tube 14. The second fixing portion 22 is formed continuously with the other end of the connecting portion 23, and extends from the connecting portion 23 to the vehicle V (refer to Figure 1 ) is formed to extend in directions corresponding to both the front side and the rear side of the vehicle. Specifically, the connecting portion 23 has a bent portion 23a in the middle portion. The connecting portion 23 is branched into a pair of extensions closer to the other end side than the bent portion 23a. In addition, the second fixing portion 22 connects the other ends of the connecting portion 23 and extends from the connecting portion 23 to the vehicle V (refer to Figure 1 ) is formed extending in directions corresponding to the front side and the rear side.

[0049] The tape 18 surrounds and wraps around the corrugated tube 14 and the second fixing portion 22 to hold them. That is, the corrugated tube 14 is supported along the second fixing portion 22, and the tape 18 is wrapped around the corrugated tube 14 and the second fixing portion 22 to maintain this state. The tape 18 is provided at four locations in the longitudinal direction of the second fixing portion 22 at intervals.

[0050] A fixing hole 23b is formed at one end of the coupling portion 23 of the bracket 16. The bracket 16 is fixed to the vehicle V by a bolt (not shown) that penetrates the fixing hole 23b and is screwed into a fixing portion under the floor of the vehicle V.

[0051] Next, the operation of the wire harness unit 10 configured as described above will be described.

[0052] In the wire harness unit 10, the metal pipe 13, the bracket 16, etc. are arranged under the floor of the vehicle V, and therefore may be soaked in water during rain, etc. Furthermore, the metal pipe 13 and the bracket 16 are made of different types of metals, so when the metal pipe 13 and the bracket 16 are directly in contact, there is a possibility of electrolytic corrosion, but because they are in contact through the rubber member 15, electrolytic corrosion can be prevented.

[0053] Next, the effects of the above-described embodiment will be described below.

[0054] (1) The metal tube 13 is made of a metal having aluminum as a first metal as a main component, and the bracket 16 is made of a metal having iron as a second metal different from the first metal as a main component. Therefore, for example, if the metal tube 13 and the bracket 16 are in direct contact with each other, corrosion is likely to occur. However, since the metal tube 13 and the bracket 16 are not in direct contact with each other through the rubber member 15, corrosion is unlikely to occur. In addition, by entrapping the rubber member 15 and the tightening band 17 tightened by the first fixing portion 21 in the rubber member 15, it is possible to suppress the metal tube 13 from deviating in the length direction of the metal tube 13 relative to the first fixing portion 21.

[0055] (2) Since the first fixing portion 21 has the engaging portion 24 that can engage with the tightening band 17 in the longitudinal direction of the metal pipe 13 , displacement of the tightening band 17 relative to the first fixing portion 21 can be prevented.

[0056] (3) Since the first fixing portion 21 includes the first piece 21a, the second piece 21b extending in a curved manner from the first piece 21a, and the through hole 21c spanning the first piece 21a and the second piece 21b, and the engaging portion 24 includes the inner wall surface 21d of the through hole 21c, the fastening belt 17 can be prevented from being misaligned relative to the first fixing portion 21 by engaging with the inner wall surface 21d of the through hole 21c.

[0057] (4) Since the first piece 21a has the first recess 21e provided at the end portion on the opposite side to the second piece 21b, and the engaging portion 24 includes the inner wall surface 21f of the first recess 21e, the fastening belt 17 can be prevented from being misaligned relative to the first fixing portion 21 by engaging with the inner wall surface 21f of the first recess 21e.

[0058] (5) Since the second piece 21b has the second recess 21g disposed at the end portion on the opposite side to the first piece 21a, and the engaging portion 24 includes the inner wall surface 21h of the second recess 21g, the fastening belt 17 can be further prevented from being misaligned relative to the first fixing portion 21 by engaging with the inner wall surface 21h of the second recess 21g.

[0059] (6) Since the bracket 16 includes the second fixing portion 22 for supporting the corrugated tube 14 and the connecting portion 23 for connecting the first fixing portion 21 and the second fixing portion 22, the metal pipe 13 and the corrugated tube 14 can be supported by one bracket 16. Therefore, for example, the metal pipe 13 and the corrugated tube 14 can be fixed to the vehicle V in a centralized manner via the bracket 16.

[0060] (7) Since the connection portion 23 has the bent portion 23 a , for example, the metal pipe 13 and the corrugated tube 14 can be fixed in accordance with a complicated arrangement space.

[0061] This embodiment can be implemented as follows: This embodiment and the following modifications can be implemented in combination with each other within the scope of no technical contradiction.

[0062] In the above embodiment, the first fixing portion 21 has the engaging portion 24 that can engage with the tightening band 17 in the longitudinal direction of the metal pipe 13, but a structure without the engaging portion 24 may be used. In addition, in the case of a structure without the engaging portion 24, for example, the tightening band 17 as the tightening member may be replaced with an adhesive tape to suppress displacement by utilizing the adhesive force of the adhesive tape.

[0063] In the above embodiment, the engaging portion 24 is provided as the inner wall surfaces 21d, 21f, 21h of the through hole 21c, the first recess 21e, and the second recess 21g. However, the engaging portion 24 may be at least one of the inner wall surfaces 21d, 21f, 21h, or may be an engaging portion of another shape different from the inner wall surface.

[0064] In the above embodiment, the bracket 16 includes the second fixing portion 22 that supports the corrugated tube 14 , but the present invention is not limited thereto and may be configured not to support the second cylindrical member such as the corrugated tube 14 .

[0065] In the above embodiment, the connection portion 23 of the bracket 16 has the bent portion 23 a , but the present invention is not limited thereto and may be configured not to have the bent portion 23 a .

[0066] In the above embodiment, the metal pipe 13 is made of a metal having aluminum as the first metal as the main component, but may be made of another type of metal. In addition, the bracket 16 is made of a metal having iron as the main component, but may be made of another type of metal when the bracket 16 has a second metal different from the first metal as the main component.

[0067] In the above embodiment, the rubber member 15 is made of EPDM (more specifically, ethylene-propylene-diene rubber), but may be made of other types of rubber materials.

[0068] In the above embodiment, the rubber member 15 is formed into a sheet shape and wrapped around the outer peripheral surface of the metal pipe 13 , but the present invention is not limited thereto. For example, the rubber member 15 may be formed into a cylindrical shape and fitted on the outer peripheral surface of the metal pipe 13 .

[0069] In the above embodiment, the first fixing portion 21 includes the first piece 21a and the second piece 21b extending in a curved manner from the first piece 21a, but the present invention is not limited thereto and may be changed to another shape. For example, the first fixing portion may be provided without the second piece 21b. In addition, for example, the first fixing portion may be provided including a curved shape along the outer peripheral surface of the rubber member 15.

[0070] The first piece 21a and the second piece 21b of the above embodiment are configured to support two locations in the circumferential direction of the outer peripheral surface of the metal pipe 13, but may be configured to support three or more locations in the circumferential direction of the outer peripheral surface of the metal pipe 13. For example, the first piece 21a may be bent so as to abut against two or more locations in the circumferential direction of the outer peripheral surface of the metal pipe 13. Also, for example, the second piece 21b may be bent so as to abut against two or more locations in the circumferential direction of the outer peripheral surface of the metal pipe 13.

[0071] In the above embodiment, the first fixing portion 21 is configured to include two second pieces 21 b , but the present invention is not limited thereto and may be modified to include only one second piece 21 b or to include three or more second pieces 21 b .

[0072] The bellows 14 of the above-described embodiment may be changed to another second cylindrical member such as a resin tube made of resin and having a constant diameter, or a metal tube made of metal.

[0073] The first sheet 21 a and the second sheet 21 b may be configured to sandwich the metal pipe 13 therebetween.

[0074] like Figure 3 As shown, the first recessed portion 21e may be provided on a side of the first sheet 21a along the axial direction of the metal pipe 13. The second recessed portion 21g may be provided on a side of the second sheet 21b along the axial direction of the metal pipe 13.

[0075] The through-hole 21 c , the first recessed portion 21 e , and the second recessed portion 21 g may be provided so as to be aligned in the circumferential direction of the metal pipe 13 .

[0076] like Figure 2 As shown, the second fixing portion 22 may have a protrusion for suppressing displacement of the tape 18 .

[0077] According to one aspect of the present disclosure, a wiring harness unit (10) may include:

[0078] A first electric wire (11);

[0079] A first elongated metal cylinder (13) covers the first electric wire (11);

[0080] a rubber sheet (15) in frictional contact with the outer peripheral surface of the first metal cylinder (13) at a selected length position of the first metal cylinder (13);

[0081] a metal bracket (16) having a first fixing portion (21) for supporting the first metal cylinder (13) by means of the rubber sheet (15); and

[0082] The tightening belt (17) surrounds and tightens the rubber sheet (15) and the first fixing portion (21) together, and is in frictional contact with the rubber sheet (15).

[0083] The rubber sheet (15) may also be wound around the selected length position of the first metal cylinder (13) in a manner that the first metal cylinder (13) and the metal bracket (16) are not in contact and are electrically insulated.

[0084] In one embodiment of the present disclosure, the first metal tube (13) may be made of a first metal material having a first metal element as a main component, and the bracket (16) may be made of a second metal material having a second metal element different from the first metal element as a main component.

[0085] Explanation of symbols

[0086] 10 Wiring unit

[0087] 11 First Wire

[0088] 12 Second wire

[0089] 13 Metal pipe (first cylindrical member)

[0090] 14 Bellows (Second cylindrical member)

[0091] 15 Rubber components

[0092] 16 Bracket

[0093] 17 Fastening belt (fastening member)

[0094] 18 Tape

[0095] 21 1st fixed part

[0096] 21a Episode 1

[0097] 21b Episode 2

[0098] 21c Through hole

[0099] 21d inner wall surface

[0100] 21e 1st recess

[0101] 21f inner wall surface

[0102] 21g 2nd recess

[0103] 21h Inner wall

[0104] 22 Second fixed part

[0105] 23 Connection

[0106] 23a Bend

[0107] 23b Fixing hole

[0108] 24 snap-fit ​​part

[0109] M1, M2 vehicle-mounted devices

[0110] V Vehicle

Claims

1. A wiring harness unit, comprising: 1st wire; a first cylindrical member covering the first electric wire; a rubber member mounted on a portion of the outer peripheral surface of the first cylindrical member in the longitudinal direction so as to cover the entire outer peripheral surface; a bracket having a first fixing portion that supports the first cylindrical member via the rubber member and does not directly contact the first cylindrical member; as well as a fastening member that surrounds and fastens the rubber member and the first fixing portion, The first cylindrical member is made of a material having a first metal as a main component, The bracket is made of a material having a second metal different from the first metal as a main component.

2. The wire harness unit according to claim 1, wherein: The first fixing portion includes an engaging portion that can engage with the fastening member in the longitudinal direction of the first cylindrical member.

3. The wire harness unit according to claim 2, wherein: The first fixing portion includes a first piece, a second piece extending in a curved manner from the first piece, and a through hole spanning the first piece and the second piece. The engaging portion includes an inner wall surface of the through hole.

4. The wire harness unit according to claim 2, wherein: The first fixing portion includes a first piece and a second piece extending in a curved manner from the first piece. The first sheet has a first recessed portion provided at an end portion, and the end portion provided with the first recessed portion is located on a side of the first sheet opposite to the second sheet. The engaging portion includes an inner wall surface of the first recessed portion.

5. The wire harness unit according to claim 4, wherein: The second sheet has a second recessed portion provided at an end portion, and the end portion provided with the second recessed portion is located on the second sheet on the side opposite to the first sheet. The engaging portion includes an inner wall surface of the second recessed portion.

6. The wire harness unit according to claim 1, wherein further comprising a second electric wire and a second cylindrical member covering the second electric wire, The stent includes a second fixing portion that supports the second cylindrical member and a connecting portion that connects the first fixing portion and the second fixing portion.

7. The wire harness unit according to claim 6, wherein: The connecting portion has a bent portion.

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