wire harness

Abstract

The wire harness (10) according to one aspect of this disclosure comprises: a first cylindrical member (40) made of metal, covering the wire member (20); a braided wire (70) installed on the outer peripheral surface (40b) of the first cylindrical member (40); and a second cylindrical member (60) made of metal, fixing the braided wire (70) to the outer peripheral surface (40b) of the first cylindrical member (40). The braided wire (70) covers the lead-out portion (21) of the wire member (20) not covered by the first cylindrical member (40). The braided thread (70) has: a first part (71) located between the outer peripheral surface (40b) of the first cylindrical member (40) and the inner peripheral surface (60a) of the second cylindrical member (60); a second part (72) extending from the first end (61) in a direction opposite to that of the lead-out portion (21) and folded back to the outer peripheral side of the second cylindrical member (60); and a third part (73) extending in the direction of the lead-out portion (21).

Description

TECHNICAL FIELD

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

[0002] In the past, as a wire harness to be installed in a vehicle such as a hybrid vehicle or an electric vehicle, a wire harness provided with an electric wire, a pipe made of metal that covers the outer periphery of the electric wire, and a braided wire that is electrically connected to the outer peripheral surface of the pipe is known (for example, refer to Patent Literature 1).

[0003] The braided wire covers the outer periphery of the lead-out portion of the electric wire that is led out from the end portion of the pipe. The end portion of the braided wire covers the end portion of the pipe, and is fixed to the outer peripheral surface of the end portion by a fastening ring.

[0004] PRIOR ART DOCUMENTS

[0005] PATENT LITERATURE

[0006] Patent Literature 1: Japanese Patent Application Publication No. 2018-120743 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] However, at the time of assembly of the wire harness, for example, there are cases where a work of mounting the lead-out portion to the housing of the connector connected to the vehicle-mounted machine is performed. In this case, the braided wire can become an obstacle to the above work.

[0009] Here, it is also considered to perform the above work in a state where the braided wire is folded back to the outer peripheral side of the pipe. However, in this case, it is necessary to release the folding back of the braided wire after the above work, and to cover the outer periphery of the lead-out portion again by the braided wire. Therefore, the workability at the time of assembly of the wire harness can be reduced.

[0010] An object of the present disclosure is to provide a wire harness that can suppress reduction in workability at the time of assembly.

[0011] MEANS FOR SOLVING THE PROBLEMS

[0012] The wire harness of the present disclosure includes: an electric wire member; a first tubular member made of metal that covers an outer periphery of the electric wire member; a braided wire that is formed by braiding a wire made of an electrically conductive material into a tubular shape, is attached to an outer peripheral surface of the first tubular member, and covers an outer periphery of a lead-out portion of the electric wire member that leads out from an end portion of the first tubular member; and a second tubular member made of metal that fixes the braided wire to the outer peripheral surface of the first tubular member, the braided wire having: a first portion between the outer peripheral surface of the first tubular member and an inner peripheral surface of the second tubular member; a second portion connected to the first portion and leading out from an end portion of the second tubular member in a direction opposite to a direction in which the lead-out portion leads out and being folded back toward an outer peripheral side of the second tubular member; and a third portion connected to the second portion and extending in a direction in which the lead-out portion leads out.

[0013] Effects of the Invention

[0014] According to the present disclosure, it is possible to suppress a decrease in workability at the time of assembling a wire harness. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic structural view of a wire harness of an embodiment.

[0016] Figure 2 is a cross-sectional view of a portion of Figure 1

[0017] Figure 3 is an exploded perspective view showing a first tubular member and a protector of an embodiment.

[0018] Figure 4 is a cross-sectional view of a wire harness of a first modification example.

[0019] Figure 5 is a cross-sectional view of a wire harness of a second modification example. DETAILED DESCRIPTION

[0020] [Explanation of Embodiments of the Present Disclosure]

[0021] First, an embodiment of the present disclosure will be described.

[0022] ​[1] The wire harness disclosed herein comprises: a wire member; a first cylindrical member made of metal covering the outer periphery of the wire member; a braided wire, which is formed by braiding conductive wire into a cylindrical shape, is installed on the outer periphery of the first cylindrical member and covers the outer periphery of a lead-out portion extending from the end of the first cylindrical member in the wire member; and a second cylindrical member made of metal for fixing the braided wire to the outer periphery of the first cylindrical member, the braided wire having: a first portion located between the outer periphery of the first cylindrical member and the inner periphery of the second cylindrical member; a second portion connected to the first portion and extending from the end of the second cylindrical member in a direction opposite to the direction of the lead-out portion and folded back to the outer periphery of the second cylindrical member; and a third portion connected to the second portion and extending in the direction of the lead-out portion.

[0023] According to this structure, the braided thread fixed to the outer peripheral surface of the first cylindrical member extends in the direction of the lead-out portion by being led out from the end of the second cylindrical member and folded back towards the outer peripheral side of the second cylindrical member, thereby covering the outer peripheral side of the second cylindrical member. Therefore, the braided thread extends in the opposite direction to the direction of the lead-out portion without folding back towards the outer peripheral side of the second cylindrical member, thus covering the outer peripheral side of the first cylindrical member. At this time, neither the lead-out portion nor the second cylindrical member is covered by the braided thread.

[0024] Therefore, during wire harness assembly, by covering the outer periphery of the first cylindrical member with braided wire, the work of mounting the lead-out portion of the connector housing for connection with the vehicle-mounted machine is easily performed. Furthermore, after the above work, if the braided wire is folded back towards the outer periphery of the second cylindrical member, the folding back operation can be completed in one step. Therefore, the reduction in workability during wire harness assembly can be suppressed.

[0025] [2] Preferably, the wire harness has a tape member that is wrapped around the outer peripheral surface of the end of the second cylindrical member and the second portion of the braided wire.

[0026] According to this structure, the end edge of the second cylindrical member is covered by the belt member, thus suppressing the wear of the braided thread due to contact with the end edge.

[0027] [3] Preferably, the first cylindrical member, the second cylindrical member and the braided wire are all formed of aluminum alloy.

[0028] According to this structure, the first cylindrical member, the second cylindrical member, and the braided wire are formed of the same metal material. Therefore, at the contact portions between the first cylindrical member and the braided wire, and between the braided wire and the second cylindrical member, electrolytic corrosion caused by water intrusion between dissimilar metals can be suppressed. Thus, to suppress water intrusion into these contact portions, it is not necessary to provide an external component covering the periphery of these contact portions. Therefore, both the reduction of increased wire harness size and the reduction of increased component count in the wire harness can be achieved.

[0029] [4] Preferably, the second cylindrical member has a protrusion that protrudes from the inner circumferential surface of the second cylindrical member toward the outer circumferential surface of the first cylindrical member, pressing the braided thread onto the outer circumferential surface of the first cylindrical member.

[0030] According to this structure, the braided wire is pressed against the outer peripheral surface of the first cylindrical member by the protrusion of the second cylindrical member, thereby improving the connection reliability between the braided wire and the first cylindrical member of the electrical connection.

[0031] [5] Preferably, the protrusion is provided throughout the circumference of the second cylindrical member.

[0032] According to this structure, the braided thread, covering the entire circumferential surface of the first cylindrical member, is pressed down by the protrusion. Therefore, the connection reliability between the braided thread and the first cylindrical member can be further improved.

[0033] [6] Preferably, the device comprises: a housing for receiving the end of the lead-out portion; a shielding shell for covering the outer periphery of the housing and connecting the braided wire; and a fixing member for fixing the braided wire to the outer surface of the shielding shell, wherein the braided wire, the shielding shell and the fixing member are all formed of aluminum alloy.

[0034] According to this structure, the braided wire, shielding shell, and fixing member are formed from the same metal material. Therefore, at the contact portions between the shielding shell and the braided wire, and between the braided wire and the fixing member, electrolytic corrosion caused by water intrusion between dissimilar metals can be suppressed. Thus, to suppress water intrusion into these contact portions, it is not necessary to provide an external component covering the periphery of these contact portions. Therefore, both the reduction of increased wire harness size and the reduction of increased component count in the wire harness can be achieved.

[0035] [7] Preferably, a sealing member is provided, which is disposed inside the end of the first cylindrical member to stop water from flowing between the outer peripheral surface of the wire member and the inner peripheral surface of the first cylindrical member.

[0036] According to this structure, water can be prevented from seeping into the interior of the first cylindrical member through the end of the first cylindrical member.

[0037] [8] Preferably, the first cylindrical member has a protrusion protruding from the inner circumferential surface of the first cylindrical member, the protrusion being located inside the sealing member in the axial direction of the first cylindrical member and opposite the sealing member.

[0038] According to this structure, when the sealing member moves inward in the axial direction of the first cylindrical member, the sealing member comes into contact with the protrusion. This suppresses the inward movement of the sealing member in the aforementioned axial direction. Therefore, positioning of the sealing member is possible.

[0039] [Details of the embodiments of this disclosure]

[0040] Specific examples of the wiring harnesses disclosed herein are described below with reference to the accompanying drawings. In the drawings, for ease of explanation, sometimes a portion of the structure is shown enlarged or simplified. Additionally, the dimensional ratios of the various parts sometimes differ in the drawings. Furthermore, this disclosure is not limited to these examples, but is intended, through the claims, to include all modifications of the same meaning and scope as the claims. The term "cylindrical" in this specification is sufficient to refer to a cylindrical shape as a whole, and also includes shapes formed by combining multiple components to form a cylindrical shape, shapes such as a C-shape with a notch, etc.

[0041] (Overall structure of wire harness 10)

[0042] like Figure 1 As shown, wiring harness 10 electrically connects two or more electrical devices. For example, wiring harness 10 electrically connects an inverter 11 located at the front of a vehicle such as a hybrid vehicle or electric vehicle to a high-voltage battery 12 located at the rear of the vehicle, beyond the inverter 11. For example, the middle portion of wiring harness 10 is laid under the vehicle floor.

[0043] Inverter 11 is connected to an electric motor (not shown) for driving the vehicle's wheels, which serves as the power source for the vehicle's propulsion. Inverter 11 generates alternating current from the direct current (DC) power of high-voltage battery 12 and supplies this AC power to the electric motor. High-voltage battery 12 is, for example, a battery capable of supplying several hundred volts.

[0044] The wire harness 10 includes one or more wire members 20, a first cylindrical member 40 covering the outer periphery of the wire members 20, and braided wires 70 mounted on the outer peripheral surface 40b of the first cylindrical member 40. In this embodiment, the wire harness 10 includes two wire members 20. The wire members 20 can be, for example, shielded wires with their own electromagnetic shielding structure, or unshielded wires without their own electromagnetic shielding structure.

[0045] like Figure 2As shown, the wire harness 10 includes a second cylindrical member 60 for fixing the braided wire 70 to the outer peripheral surface 40b of the first cylindrical member 40, and a protector 90 for fixing to the inner peripheral surface 60a of the second cylindrical member 60.

[0046] The outer periphery of the wire member 20 is covered by a first cylindrical member 40 and a second cylindrical member 60. The portion of the wire member 20 covered by the first cylindrical member 40 is longer than the portion covered by the second cylindrical member 60. In this embodiment, the first cylindrical member 40 is longer than the second cylindrical member 60.

[0047] like Figure 1 As shown, connectors C1 and C2 are respectively installed at both ends of the wire component 20. One end of the wire component 20 is connected to the inverter 11 via connector C1. The other end of the wire component 20 is connected to the high-voltage battery 12 via connector C2.

[0048] The wire harness 10 includes: a housing 100 for receiving one end of the wire member 20; a shielding shell 110 for covering the outer periphery of the housing 100; and a fixing member 120 for fixing the braided wire 70 to the outer surface of the shielding shell 110. The housing 100, the shielding shell 110, and the fixing member 120 constitute the connector C1.

[0049] (Structure of electrical component 20)

[0050] like Figure 2 As shown, the wiring component 20 has a first wire 30 and a second wire 35 electrically connected to the first wire 30. The first wire 30 is, for example, provided in the portion of the wiring harness 10 that is laid under the floor of the vehicle. The second wire 35 is connected to the end of the first wire 30.

[0051] The wire member 20 has a lead-out portion 21 extending from the end 41 of the first cylindrical member 40. A connecting portion 22 is provided on a portion along the length of the lead-out portion 21, and the ends of the first wire 30 and the second wire 35 are electrically connected at the connecting portion 22.

[0052] The outer periphery of the connecting portion 22 is covered by an insulating covering member 23, such as heat shrink tubing. Examples of covering members 23 include hot melt adhesives, resin molded parts, and tape components.

[0053] (Structure of the first wire 30)

[0054] The first wire 30, for example, has a single-core wire 31 composed of a single conductor and an insulating covering portion 32 that covers the outer periphery of the single-core wire 31. The single-core wire 31 can be, for example, a columnar conductor composed of a single metal rod with a solid internal structure, or a cylindrical conductor with a hollow internal structure. The material of the single-core wire 31 can be, for example, copper-based or aluminum-based metallic materials. In this embodiment, the single-core wire 31 is formed of an aluminum alloy. The single-core wire 31 is formed, for example, by extrusion molding.

[0055] The cross-sectional shape of the single-core wire 31 can be any shape. For example, the cross-sectional shape of the single-core wire 31 can be formed as a circle, a semi-circle, a polygon, a square, or a flat shape. In this embodiment, the cross-sectional shape of the single-core wire 31 is formed as a circle. That is, the single-core wire 31 in this embodiment is formed as a cylinder.

[0056] The insulating covering portion 32, for example, covers the entire circumferential surface of the single-core wire 31. The insulating covering portion 32 is, for example, made of an insulating material such as synthetic resin. As a material for the insulating covering portion 32, a synthetic resin with cross-linked polyethylene, cross-linked polypropylene, or other polyolefin-based resins as its main components can be used. As a material for the insulating covering portion 32, a single material can be used alone, or two or more materials can be appropriately combined. The insulating covering portion 32 is, for example, formed by extrusion molding of the single-core wire 31.

[0057] At the end of the first wire 30, a single-core wire 31 is exposed from the insulation sheath 32. The portion of the single-core wire 31 exposed from the insulation sheath 32 is, for example, compressed into a flat shape.

[0058] (Structure of the second wire 35)

[0059] The second wire 35, for example, has a stranded wire 36 formed by twisting together multiple metal wires, and an insulating covering portion 37 that covers the outer periphery of the stranded wire 36. The stranded wire 36 can be made of, for example, copper-based or aluminum-based metal materials. In this embodiment, the stranded wire 36 is formed of an aluminum alloy.

[0060] The cross-sectional shape of the stranded wire 36 can be any shape. For example, the cross-sectional shape of the stranded wire 36 can be formed as a circle, a semi-circle, a polygon, a square, or a flat shape. In this embodiment, the cross-sectional shape of the stranded wire 36 is formed as a circle.

[0061] The insulating cover 37 covers the entire circumferential surface of the stranded wire 36, for example. The insulating cover 37 is made of an insulating material such as synthetic resin. For example, a synthetic resin with cross-linked polyethylene, cross-linked polypropylene, or other polyolefin resins as its main component can be used as the material for the insulating cover 37. A single material or a suitable combination of two or more materials can be used as the material for the insulating cover 37. The insulating cover 37 is formed, for example, by extrusion molding of the stranded wire 36.

[0062] At the end of the second wire 35, a stranded wire 36 is exposed from the insulating cover 37. The portion of the stranded wire 36 exposed from the insulating cover 37 is generally compressed into a flat shape, for example.

[0063] The stranded wire 36 exposed from the insulating cover portion 37 is joined to overlap with the single-core wire 31 exposed from the insulating cover portion 32. The single-core wire 31 and the stranded wire 36 are joined by known joining methods such as ultrasonic bonding or resistance welding. The aforementioned connecting portion 22 is formed by joining the stranded wire 36 and the single-core wire 31. The aforementioned covering member 23 is provided from the end of the insulating cover portion 32 to the end of the insulating cover portion 37. Therefore, the outer periphery of the single-core wire 31 exposed from the insulating cover portion 32 and the outer periphery of the stranded wire 36 exposed from the insulating cover portion 37 are covered by the covering member 23.

[0064] (Structure of the first cylindrical member 40)

[0065] The first cylindrical member 40 is, for example, formed into a cylindrical shape. The first cylindrical member 40 is, for example, bent into a shape following the routing path of the wire member 20. The first cylindrical member 40 extends, for example, under the floor of the vehicle in the longitudinal direction. The first cylindrical member 40 covers the outer periphery of the portion of the wire member 20 that is routed under the floor of the vehicle. In this embodiment, the first cylindrical member 40 covers the outer periphery of the first wire 30 routed under the floor of the vehicle.

[0066] The material for the first cylindrical member 40 can be, for example, a copper-based or aluminum-based metallic material. In this embodiment, the first cylindrical member 40 is formed of an aluminum alloy.

[0067] The first cylindrical member 40 has a protrusion 42 protruding from its inner circumferential surface 40a. The protrusion 42 is positioned along the axial direction of the first cylindrical member 40, moving inward from the opening at the end 41. The protrusion 42 is provided throughout the circumferential direction of the first cylindrical member 40. Therefore, the cross-sectional area of ​​the portion of the first cylindrical member 40 with the protrusion 42 is smaller than the cross-sectional area of ​​the other portions. The cross-sectional areas of the other portions are approximately constant along the axial direction of the first cylindrical member 40.

[0068] A recess 43 is provided in the portion of the outer peripheral surface 40b of the first cylindrical member 40 corresponding to the protrusion 42. The recess 43 is provided throughout the circumferential direction of the first cylindrical member 40.

[0069] like Figure 1 As shown, in this embodiment, the end of the first cylindrical member 40 located on the side opposite to the end 41 is electrically connected to the connector C2. Furthermore, this end and the connector C2 can also be connected by a braided wire separate from the braided wire 70. In this case, the outer periphery of the braided wire can also be covered, for example, by an outer casing such as a sheath.

[0070] (Structure of sealing component 50)

[0071] like Figure 2 As shown, the wire harness 10 includes a sealing member 50 that prevents water from entering between the outer peripheral surface of each wire member 20 and the inner peripheral surface 40a of the first cylindrical member 40. In this embodiment, the sealing member 50 prevents water from entering between the outer peripheral surface of each first wire 30 and the inner peripheral surface 40a of the first cylindrical member 40. The sealing member 50 is, for example, integrally formed into a cylindrical shape.

[0072] A sealing member 50 is disposed inside the end 41 of the first cylindrical member 40. The sealing member 50 is located in the portion of the end 41 closer to the opening of the end 41 than the protrusion 42. The sealing member 50 is opposite to the protrusion 42 in the axial direction of the first cylindrical member 40. A rubber plug can be used as the sealing member 50, for example.

[0073] The sealing member 50 has two insertion holes 51 through which each of the first wires 30 is inserted. The sealing member 50 is in close contact with the inner peripheral surface 40a of the first cylindrical member 40 and with the outer peripheral surface of each of the first wires 30.

[0074] (Structure of the second cylindrical member 60)

[0075] The second cylindrical member 60 is formed into a cylinder with an inner diameter larger than that of the first cylindrical member 40. The second cylindrical member 60 is fixed to the outer peripheral surface 40b of the first cylindrical member 40 with a braided thread 70 sandwiched between it and the outer peripheral surface 40b of the first cylindrical member 40.

[0076] The material for the second cylindrical member 60 can be, for example, a copper-based or aluminum-based metallic material. In this embodiment, the second cylindrical member 60 is formed of an aluminum alloy.

[0077] The second cylindrical member 60 has a first end 61 and a second end 62 located on the side opposite to the first end 61 in the axial direction of the second cylindrical member 60. The first end 61 covers the outer periphery of the first cylindrical member 40 with a braided thread 70 sandwiched between it and the outer peripheral surface 40b of the first cylindrical member 40. The second end 62 covers the outer periphery of the portion of the lead-out portion 21 that is farther from the end 41 of the first cylindrical member 40 than the connecting portion 22. Therefore, the outer periphery of the connecting portion 22 is covered by the second cylindrical member 60.

[0078] The second cylindrical member 60 has a protrusion 63 that protrudes from the inner circumferential surface 60a of the second cylindrical member 60 toward the outer circumferential surface 40b of the first cylindrical member 40. The protrusion 63 is provided in the axial direction of the second cylindrical member 60 at a position that moves inward from the opening at the first end 61. More specifically, the protrusion 63 is provided at a position corresponding to the recess 43 of the first cylindrical member 40. The protrusion 63 is provided throughout the circumferential direction of the second cylindrical member 60. The width of the protrusion 63 is slightly smaller than the width of the recess 43 of the first cylindrical member 40.

[0079] The protrusion 63 presses the braided thread 70 against the outer peripheral surface 40b of the first cylindrical member 40. More specifically, the protrusion 63 presses the braided thread 70 against the inner surface of the recess 43 of the first cylindrical member 40. Thus, the braided thread 70 and the first cylindrical member 40 are electrically connected.

[0080] The protrusion 63 engages with the recess 43 in such a way that the braided thread 70 is sandwiched between them. Through the engagement of the protrusion 63 and the recess 43, the second cylindrical member 60 is fixed to the first cylindrical member 40.

[0081] A recess 64 is provided in the portion of the outer peripheral surface 60b of the second cylindrical member 60 corresponding to the protrusion 63. The recess 64 is provided throughout the circumferential direction of the second cylindrical member 60.

[0082] In this embodiment, the protrusion 63 and the recess 64 are formed, for example, by rotating a jig (not shown) and the second cylindrical member 60 relative to each other, causing the jig to contact the outer peripheral surface 60b of the second cylindrical member 60, thereby plastically deforming the second cylindrical member 60 in a manner of partial diameter reduction. Examples of such plastic deformation methods include spinning and rotary forging. In this embodiment, the protrusion 63 is formed by rotary forging the second cylindrical member 60, which is in a state where a braided thread 70 is sandwiched between the outer peripheral surface 40b of the first cylindrical member 40. Along with the formation of the protrusion 63, the portion of the first cylindrical member 40 corresponding to the protrusion 63 is plastically deformed in a manner of diameter reduction. As a result, a recess 43 is formed on the outer peripheral surface 40b of the first cylindrical member 40, and a protrusion 42 is formed on the inner peripheral surface 40a of the first cylindrical member 40.

[0083] The second cylindrical member 60 has two through holes 65 extending through in the thickness direction. The through holes 65 are arranged radially in the second cylindrical member 60. The through holes 65 are provided in the portion of the second cylindrical member 60 that covers the outer periphery of the lead-out portion 21 and in the portion of the second cylindrical member 60 that moves inward from the opening at the second end 62 in the axial direction.

[0084] (Structure of braided yarn 70)

[0085] The braided wire 70 is constructed, for example, by braiding conductive wire into a cylindrical shape. The braided wire 70 is arranged such that it substantially covers the outer periphery of the lead-out portion 21 along its length. As the braided wire 70, braided wires made of various metal wires or braided wires combining metal wires and resin wires can be used. For example, copper-based or aluminum-based metal materials can be used as the metal wire material. For example, para-aramid fibers with excellent insulation and shear resistance can be used as the resin wire material. In this embodiment, the braided wire 70 is formed by braiding aluminum alloy metal wire into a cylindrical shape.

[0086] The braided thread 70 has a first portion 71 including one end of the braided thread 70, a second portion 72 connected to the first portion 71, and a third portion 73 connected to the second portion 72.

[0087] Part 71 is located between the outer peripheral surface 40b of the first cylindrical member 40 and the inner peripheral surface 60a of the second cylindrical member 60. A portion of part 71 is sandwiched between the recess 43 of the first cylindrical member 40 and the protrusion 63 of the second cylindrical member 60. This portion is pressed against the recess 43 by the protrusion 63, thus becoming more compressed than the other portions of part 71.

[0088] Part 2 72 extends from the first end 61 of the second cylindrical member 60 in the opposite direction to the direction of the lead-out portion 21 and folds back to the outer periphery of the second cylindrical member 60.

[0089] The third part 73 extends in the direction of the lead-out portion 21. The third part 73 covers the outer periphery of the second cylindrical member 60 and the outer periphery of the lead-out portion 21. That is, the third part 73 covers the outer periphery of the plurality of second wires 35 together. The end of the third part 73 located on the side opposite to the second part 72 is electrically connected to the shielding shell 110.

[0090] like Figure 1 As shown, a portion of the outer periphery of part 3 73 along its length is covered by the outer component 130. The outer component 130 in this embodiment is, for example, a bellows with a corrugated structure having annular protrusions and annular recesses alternately and continuously arranged along its length.

[0091] (Structure with component 80)

[0092] like Figure 2 As shown, the wire harness 10 has a strap member 80, which is wrapped around the outer peripheral surface of the first end 61 of the second cylindrical member 60 and the second portion 72 of the braided wire 70.

[0093] The tape member 80 has an adhesive layer on one side in the thickness direction. The tape member 80 is wound multiple times over the outer peripheral surface of the first end 61 and the second portion 72 with the adhesive layer facing inward. Therefore, the end edge of the first end 61 is covered by the tape member 80.

[0094] (Structure of protector 90)

[0095] like Figure 2 and Figure 3 As shown, the protector 90 is fixed to the inner circumferential surface 60a of the second cylindrical member 60 from the outside of the first cylindrical member 40. The protector 90 is formed, for example, from an insulating resin material.

[0096] The protector 90 has: a cylindrical insertion portion 91 into which an insertion lead-out portion 21 is inserted; and a fixing portion 92 protruding from one end face of the insertion portion 91 in the axial direction, wherein the lead-out portion 21 is fixed to the fixing portion 92. Additionally, the protector 90 has: an annular flange portion 93 protruding outwards from the aforementioned end of the insertion portion 91 throughout its entire circumference; and two engaging protrusions 94 protruding in opposite directions from the outer circumferential surface of the insertion portion 91. Each engaging protrusion 94 is positioned away from the flange portion 93 in the axial direction of the insertion portion 91.

[0097] The protector 90 has a slit 90a that extends integrally along the axial direction. The slit 90a extends through the insertion portion 91 and the flange portion 93. The protector 90 is configured to elastically deform by narrowing the interval of the slit 90a.

[0098] The insertion portion 91 covers the outer periphery of the portion of the lead-out portion 21, including the connecting portion 22. In other words, the outer periphery of the connecting portion 22 is covered by the insertion portion 91. A gap is provided throughout the entire circumference between the inner circumferential surface of the insertion portion 91 and the outer surface of the connecting portion 22.

[0099] The inner diameter of the insertion portion 91 is smaller than the inner diameter of the first cylindrical member 40. That is, the insertion portion 91 is opposite to the sealing member 50 in the axial direction of the first cylindrical member 40. In this embodiment, the inner circumferential portion of the other end face of the insertion portion 91, opposite to the aforementioned end face, contacts the sealing member 50 in the axial direction of the first cylindrical member 40.

[0100] The outer diameter of the insertion part 91 is larger than the outer diameter of the first cylindrical member 40. Therefore, the thickness of the insertion part 91 is greater than the thickness of the first cylindrical member 40. The outer diameter of the insertion part 91 is approximately the same as the inner diameter of the second cylindrical member 60.

[0101] The fixing part 92 protrudes away from the insertion part 91 along the axial direction. The fixing part 92 is positioned along the length of the lead-out part 21 at a location farther from the end 41 of the first cylindrical member 40 than the insertion part 91. The fixing part 92 is located outside the second cylindrical member 60. The fixing part 92 is positioned circumferentially different from the slit 90a in the insertion part 91.

[0102] The cross-sectional shape of the fixing part 92 is, for example, formed as an arc centered on the axis of the insertion part 91. The inner surface of the fixing part 92 is connected to the inner peripheral surface of the insertion part 91 without any steps.

[0103] The portion of the lead-out portion 21 that is farther from the end 41 of the first cylindrical member 40 than the connecting portion 22 is fixed in the fixing portion 92 by means of the belt member 81. More specifically, a plurality of second wires 35 are fixed together in the fixing portion 92 by means of the belt member 81. The belt member 81 is wound multiple times around the fixing portion 92 and each of the second wires 35. Furthermore, the belt member 81 can be the same type of belt member as the belt member 80 described above, or it can be a belt member different from the belt member 80.

[0104] The outer diameter of the flange portion 93 is approximately the same as the outer diameter of the second cylindrical member 60. The flange portion 93 contacts the end face of the second end portion 62 of the second cylindrical member 60 in the axial direction of the insertion portion 91.

[0105] The engaging protrusion 94 is configured to engage with the through hole 65 of the second cylindrical member 60. By engaging the engaging protrusion 94 with the through hole 65, the protector 90 is fixed to the inner circumferential surface 60a of the second cylindrical member 60.

[0106] (Structure of housing 100)

[0107] like Figure 1 As shown, the housing 100 is formed into a cylindrical shape, for example. The end 21a of the lead-out portion 21 is housed in the housing 100. The end 21a of the lead-out portion 21 is held in the housing 100. The housing 100 is formed, for example, of an insulating resin material.

[0108] (Structure of shielding shell 110)

[0109] The shielding shell 110 covers, for example, a portion of the outer periphery of the housing 100. The shielding shell 110 can be made of, for example, a copper-based or aluminum-based metallic material. In this embodiment, the shielding shell 110 is formed of an aluminum alloy. A portion of the outer periphery of the shielding shell 110 is covered by the aforementioned end of the third portion 73 of the braided wire 70.

[0110] (Structure of fixed component 120)

[0111] The fixing member 120 forms an annular shape that surrounds the outer surface of the aforementioned portion of the shielding shell 110. In this embodiment, the fixing member 120 is a fastening ring. As the material for the fixing member 120, for example, copper-based, aluminum-based, or other metallic materials can be used. In this embodiment, the fixing member 120 is formed of an aluminum alloy.

[0112] The fixing member 120 is fastened to the shielding shell 110 in such a way that the braided wire 70 is sandwiched between the braided wire 70 and the outer surface of the shielding shell 110, thereby fixing the braided wire 70 to the outer surface of the shielding shell 110. Thus, the braided wire 70 and the shielding shell 110 are electrically connected.

[0113] The function and effects of this implementation method are explained.

[0114] (1) The wire harness 10 includes: a wire member 20; a first cylindrical member 40 made of metal covering the outer periphery of the wire member 20; a braided wire 70 installed on the outer peripheral surface 40b of the first cylindrical member 40 and covering the outer periphery of the lead-out portion 21; and a second cylindrical member 60 made of metal fixing the braided wire 70 to the outer peripheral surface 40b of the first cylindrical member 40. The braided wire 70 has: a first portion 71 located between the outer peripheral surface 40b of the first cylindrical member 40 and the inner peripheral surface 60a of the second cylindrical member 60; a second portion 72 extending from the first end 61 in a direction opposite to the direction of the lead-out portion 21 and folded back to the outer periphery of the second cylindrical member 60; and a third portion 73 extending in the direction of the lead-out portion 21.

[0115] According to this structure, the braided thread 70 fixed to the outer peripheral surface 40b of the first cylindrical member 40 extends from the first end 61 and folds back towards the outer peripheral side of the second cylindrical member 60, thus extending towards the lead-out portion 21 in a state that covers the outer peripheral side of the second cylindrical member 60. Therefore, the braided thread 70 extends in the opposite direction to the direction of the lead-out portion 21 without folding back towards the outer peripheral side of the second cylindrical member 60, covering the outer peripheral side of the first cylindrical member 40. At this time, the lead-out portion 21 and the second cylindrical member 60 are not covered by the braided thread 70.

[0116] Therefore, during the assembly of the wire harness 10, by covering the outer periphery of the first cylindrical member 40 with the braided wire 70, the operation of installing the lead-out portion 21 onto the housing 100 of the connector C1 can be easily performed, for example. Furthermore, after the above operation, if the braided wire 70 is folded back towards the outer periphery of the second cylindrical member 60, the folding back operation can be completed in one step. Therefore, the decrease in workability during the assembly of the wire harness 10 can be suppressed.

[0117] (2) The wire harness 10 has a belt member 80, which is wrapped around the outer periphery of the first end 61 of the second cylindrical member 60 and the second part 72 of the braided wire 70.

[0118] With this structure, the edge of the first end 61 is covered by the belt member 80, thus suppressing wear of the braided thread 70 due to contact with the edge.

[0119] (3) The first cylindrical member 40, the second cylindrical member 60 and the braided wire 70 are all formed of aluminum alloy.

[0120] According to this structure, the first cylindrical member 40, the second cylindrical member 60, and the braided wire 70 are formed of the same metal material. Therefore, at the contact portions between the first cylindrical member 40 and the braided wire 70, and at the contact portions between the braided wire 70 and the second cylindrical member 60, electrolytic corrosion caused by water intrusion between dissimilar metals can be suppressed. Thus, to suppress water intrusion into the aforementioned contact portions, it is not necessary to provide an external component covering the outer periphery of these contact portions. Therefore, both the reduction of the increase in the size of the wire harness 10 and the reduction of the increase in the number of components in the wire harness 10 can be achieved.

[0121] (4) The second cylindrical member 60 has a protrusion 63 that protrudes from the inner peripheral surface 60a of the second cylindrical member 60 toward the outer peripheral surface 40b of the first cylindrical member 40, pressing the braided thread 70 to the outer peripheral surface 40b of the first cylindrical member 40.

[0122] With this structure, the braided wire 70 is pressed against the outer peripheral surface 40b of the first cylindrical member 40 by the protrusion 63 of the second cylindrical member 60, thus improving the connection reliability between the braided wire 70 and the first cylindrical member 40.

[0123] (5) The protrusion 63 is provided throughout the circumference of the second cylindrical member 60.

[0124] With this structure, the braided thread 70 is pressed against the protrusion 63 in the circumferential direction of the outer peripheral surface 40b of the first cylindrical member 40. Therefore, the connection reliability between the braided thread 70 and the first cylindrical member 40 can be further improved.

[0125] (6) The wire harness 10 includes: a housing 100 for receiving the end 21a of the lead-out portion 21; a shielding shell 110 for covering the outer periphery of the housing 100; and a fixing member 120 for fixing the braided wire 70 to the outer surface of the shielding shell 110. The braided wire 70, the shielding shell 110, and the fixing member 120 are all made of aluminum alloy.

[0126] According to this structure, the braided wire 70, the shielding shell 110, and the fixing member 120 are formed of the same metal material. Therefore, at the contact portions between the shielding shell 110 and the braided wire 70, and between the braided wire 70 and the fixing member 120, electrolytic corrosion caused by water intrusion between dissimilar metals can be suppressed. Thus, to suppress water intrusion into the aforementioned contact portions, it is not necessary to provide an external component covering the outer periphery of these contact portions. Therefore, it is possible to achieve both suppression of the increase in the size of the wire harness 10 and suppression of the increase in the number of components in the wire harness 10.

[0127] (7) The wire harness 10 has a sealing member 50, which is disposed inside the end 41 of the first cylindrical member 40 to stop water between the outer peripheral surface of the wire member 20 and the inner peripheral surface 40a of the first cylindrical member 40.

[0128] With this structure, water can be prevented from seeping into the interior of the first cylindrical member 40 through the end 41 of the first cylindrical member 40.

[0129] (8) The first cylindrical member 40 has a protrusion 42 protruding from the inner circumferential surface of the first cylindrical member 40. The protrusion 42 is located inside the sealing member 50 in the axial direction of the first cylindrical member 40 and is opposite to the sealing member 50.

[0130] With this structure, when the sealing member 50 moves inward in the axial direction of the first cylindrical member 40, the sealing member 50 contacts the protrusion 42. This prevents the sealing member 50 from moving inward in the aforementioned axial direction. Therefore, the sealing member 50 can be positioned.

[0131] (9) The protrusion 63 of the second cylindrical member 60 and the recess 43 of the first cylindrical member 40 are formed by rotary forging the second cylindrical member 60 in a state in which the braided wire 70 is sandwiched between the second cylindrical member 60 and the outer peripheral surface 40b of the first cylindrical member 40.

[0132] According to this structure, the second cylindrical member 60, the braided wire 70, and the first cylindrical member 40 are plastically deformed together through rotary forging. At this time, at least on the surface of the protrusion 63, the surface of the portion of the braided wire 70 pressed into the recess 43 by the protrusion 63, and the surface of the recess 43, the oxide coating formed on these surfaces is destroyed. As a result, the resistance of the connection between the braided wire 70 and the first cylindrical member 40 decreases, thereby improving the connection reliability of this connection.

[0133] like Figure 2As shown, the longitudinal positions of the recess 64 and the protrusion 63 of the second cylindrical member 60 can be consistent or correspond to each other. In one example, the depth of the recess 64 and the height of the protrusion 63 of the second cylindrical member 60 can also be consistent or correspond to each other, and the width of the recess 64 and the lateral width of the protrusion 63 of the second cylindrical member 60 can also be consistent or correspond to each other. The longitudinal positions of the recess 43 and the protrusion 42 of the first cylindrical member 40 can be consistent or correspond to each other. In one example, the depth of the recess 43 and the height of the protrusion 42 of the first cylindrical member 40 can also be consistent or correspond to each other, and the width of the recess 43 and the lateral width of the protrusion 42 of the first cylindrical member 40 can also be consistent or correspond to each other.

[0134] like Figure 2 As shown in the example, by inserting the first cylindrical member 40 into the second cylindrical member 60 with the first cylindrical member 40 and the second cylindrical member 60 partially overlapping, a recess 64 is formed on the outer peripheral surface of the second cylindrical member 60, thereby forming a protrusion 63 on the inner peripheral surface of the second cylindrical member 60, a recess 43 on the outer peripheral surface of the first cylindrical member 40, and a protrusion 42 on the inner peripheral surface of the first cylindrical member 40. Therefore, the longitudinal positions of the recess 64 and protrusion 63 of the second cylindrical member 60 and the recess 43 and protrusion 42 of the first cylindrical member 40 can be consistent or correspond to each other, and / or the shapes of the recess 64 and protrusion 63 of the second cylindrical member 60 and the recess 43 and protrusion 42 of the first cylindrical member 40 can be consistent or correspond.

[0135] <Variation Example>

[0136] This embodiment can be implemented with the following modifications. This embodiment and the following variations can be combined with each other within the scope of technical inconsistency.

[0137] like Figure 4 As shown, the protector 90 can also be omitted from the wire harness 10. In this case, the through hole 65 of the second cylindrical member 60 can also be omitted. Even with such a structure, it can achieve the same effect as described in effects (1) to (9).

[0138] like Figure 5As shown, the second cylindrical member 60 may be, for example, a cylindrical fastening ring. In this case, the second end 62 of the second cylindrical member 60 does not protrude beyond the end 41 of the first cylindrical member 40 in the axial direction of the second cylindrical member 60. That is, both the first end 61 and the second end 62 cover the outer periphery of the first cylindrical member 40 with the braided thread 70 sandwiched between them and the outer peripheral surface 40b of the first cylindrical member 40. Therefore, the outer periphery of the lead-out portion 21, including the connecting portion 22, is not covered by the second cylindrical member 60. The fastening ring in this modified example does not have a protrusion 63, but the fastening ring may also have a protrusion 63. When the fastening ring has a protrusion 63, the position where the fastening ring is provided in the axial direction of the first cylindrical member 40 is preferably a position corresponding to the recess 43 of the first cylindrical member 40. Alternatively, in this modified example, the wire harness 10 may also include a protector fixed to the inner circumferential surface 40a of the first cylindrical member 40, covering the outer periphery of the lead-out portion 21. In this case, the sealing member 50 may also be disposed inside the aforementioned protector, and may also be disposed inside the first cylindrical member 40.

[0139] The wire component 20 can be constructed using only the first wire 30 or only the second wire 35.

[0140] The first wire 30 may also have stranded wire 36.

[0141] The second wire 35 can also have a single-core wire 31.

[0142] The protrusion 42 may also contact the sealing member 50 in the axial direction of the first cylindrical member 40.

[0143] The protrusion 42 can be omitted from the first cylindrical member 40. In this case, the protrusion 63 can be provided at any position in the axial direction of the second cylindrical member 60, as long as it is the portion of the first part 71 located on its inner circumference. For example, the protrusion 63 can also be provided in the portion of the second cylindrical member 60 located on the outer circumference of the sealing member 50. Furthermore, when the protrusion 42 is omitted from the first cylindrical member 40, it is preferable to provide a recess 43 in the portion of the outer circumferential surface 40b of the first cylindrical member 40 corresponding to the protrusion 63.

[0144] Sealing component 50 can also be omitted.

[0145] The braided wire 70, the shielding shell 110, and the fixing member 120 can also be formed from different metal materials. In this case, an outer component can also be provided on the outer periphery of the contact portion between the shielding shell 110 and the braided wire 70, and the contact portion between the braided wire 70 and the fixing member 120.

[0146] Component 80 can also be omitted.

[0147] The protrusion 63 may also be provided on a portion of the circumferential direction of the second cylindrical member 60. Alternatively, multiple protrusions 63 may be provided at intervals between each other in the circumferential direction of the second cylindrical member 60.

[0148] Multiple protrusions 63 may also be provided at intervals along the axial direction of the second cylindrical member 60.

[0149] The protrusion 63 can also be omitted from the second cylindrical member 60.

[0150] The first cylindrical member 40, the second cylindrical member 60, and the braided wire 70 can also be formed from different metal materials. In this case, an outer fitting member can also be provided on the outer periphery of the contact portion between the first cylindrical member 40 and the braided wire 70, and on the outer periphery of the contact portion between the braided wire 70 and the second cylindrical member 60.

[0151] The wire harness 10 may also have multiple first cylindrical members 40. In addition, the wire harness 10 may also have multiple second cylindrical members 60.

[0152] The portion of the wire component 20 covered by the first cylindrical member 40 may be shorter than the portion covered by the second cylindrical member 60. That is, the first cylindrical member 40 may be shorter than the second cylindrical member 60.

[0153] Explanation of reference numerals in the attached figures

[0154] C1 connector

[0155] C2 connector

[0156] 10 Wire Harness

[0157] 11 Inverter

[0158] 12 High-voltage batteries

[0159] 20. Electrical wiring components

[0160] 21 Introduction

[0161] 21a end

[0162] 22 Connecting parts

[0163] 23 Covering components

[0164] 30 First Electric Wire

[0165] 31 Single-core wire

[0166] 32 Insulation Covering Part

[0167] 35. Second wire

[0168] 36 stranded wire

[0169] 37 Insulation Covering Part

[0170] 40 First cylindrical member

[0171] 40a Inner circumferential surface

[0172] 40b outer perimeter

[0173] 41 end

[0174] 42. Protrusion

[0175] 43 recess

[0176] 50 Sealing components

[0177] 51 Through Hole

[0178] 60 Second cylindrical member

[0179] 60a inner surface

[0180] 60b outer perimeter

[0181] 61. First end (end)

[0182] 62 Second end

[0183] 63. Protrusion

[0184] 64 recess

[0185] 65 Through hole

[0186] 70 braided yarn

[0187] 71 Part 1

[0188] 72 Part 2

[0189] 73 Part 3

[0190] 80 with components

[0191] 81 with components

[0192] 90 protector

[0193] 90a slit

[0194] 91 Insertion section

[0195] 92 Fixing part

[0196] 93 Flange portion

[0197] 94. A prominent kink.

[0198] 100 housing

[0199] 110 Shielding shell

[0200] 120 Fixed components

[0201] 130 External components

Claims

1. A wire harness, comprising: Electrical wiring components; A first cylindrical metal member covers the outer periphery of the wire member; The braided wire, which is made by braiding conductive wire into a cylindrical shape, is installed on the outer peripheral surface of the first cylindrical member and covers the outer periphery of the lead-out portion extending from the end of the first cylindrical member in the wire member; A second cylindrical member made of metal secures the braided thread to the outer circumferential surface of the first cylindrical member; as well as With components, The braided thread has: Part 1 is located between the outer peripheral surface of the first cylindrical member and the inner peripheral surface of the second cylindrical member; The second part is connected to the first part and extends from the end of the second cylindrical member in the opposite direction to the direction of the lead-out portion and folds back to the outer periphery of the second cylindrical member; as well as Part 3 is connected to Part 2 and extends in the direction of the lead-out portion. The belt member is located between the first part and the third part, and the end edge of the second cylindrical member is covered by the belt member.

2. The wire harness according to claim 1, wherein, The belt member is wound around the outer peripheral surface of the end of the second cylindrical member and the second portion of the braided thread.

3. The wire harness according to claim 1, wherein, The first cylindrical member, the second cylindrical member, and the braided wire are all formed of aluminum alloy.

4. The wire harness according to claim 1, wherein, The second cylindrical member has a protrusion that protrudes from the inner circumferential surface of the second cylindrical member toward the outer circumferential surface of the first cylindrical member, pressing the braided thread onto the outer circumferential surface of the first cylindrical member.

5. The wire harness according to claim 4, wherein, The protrusion is provided throughout the circumference of the second cylindrical member.

6. The wire harness according to claim 1, wherein, The wiring harness has the following features: A housing that accommodates the end portion of the lead-out section; A shielding shell, covering the outer periphery of the shell and connecting the braided wires; and A fixing component is used to secure the braided wire to the outer surface of the shielding shell. The braided wire, the shielding shell, and the fixing component are all made of aluminum alloy.

7. The wire harness according to any one of claims 1 to 6, wherein, The wire harness includes a sealing member disposed inside the end of the first cylindrical member, thereby preventing water from entering between the outer peripheral surface of the wire member and the inner peripheral surface of the first cylindrical member.

8. The wire harness according to claim 7, wherein, The first cylindrical member has a protrusion extending from the inner circumferential surface of the first cylindrical member. The protrusion is located inside the sealing member in the axial direction of the first cylindrical member and is opposite to the sealing member.

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