wire harness

Abstract

A wire harness (10) according to one embodiment of the present disclosure includes a first metal cylindrical member (40) that covers an electric wire member (20), a second metal cylindrical member (60) that is fixed to an outer peripheral surface (40b) of the first cylindrical member (40), and a protector (90) that is fixed to an inner peripheral surface (60a) of the second cylindrical member (60) and covers a lead-out portion (21) of the electric wire member (20) that is not covered by the first cylindrical member (40). The second cylindrical member (60) has a protruding portion (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) and engages with the first cylindrical member (40).

Description

Technical Field

[0001] This disclosure relates to wire harnesses. Background Technology

[0002] Previously, wiring harnesses installed in vehicles such as hybrid vehicles and electric vehicles have been known to consist of wires made up of single-core wires and stranded wires (see, for example, Patent Document 1).

[0003] Patent Document 1 describes a wire harness comprising: a shielding tube that covers the outer periphery of the connection portion where a single-core wire and a stranded wire are connected; and a protective member fixed to the end of the shielding tube and assembled to the wire. At the connection portion, with the single-core wire and the stranded wire overlapping, these are connected by, for example, soldering or welding. Furthermore, the protective member is referred to as a positioning member in Patent Document 1.

[0004] The protective component has a cylindrical portion, a plate-shaped assembly piece protruding from one end of the cylindrical portion in the axial direction, and a locking protrusion protruding from the outer peripheral surface of the cylindrical portion. The cylindrical portion and the assembly piece are located inside the shielding tube.

[0005] An electrical wire is inserted into the cylindrical section. The protective component is assembled to the wire by wrapping the wire and mounting piece together with a tape. A locking protrusion is configured to engage with a locking receiver located at the end of the shielding tube. The locking receiver is a hole that penetrates the end of the shielding tube in the thickness direction. The protective component is fixed to the end of the shielding tube by the interlocking of the locking protrusion and the locking receiver.

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent Document 1: Japanese Patent Application Publication No. 2017-84547 Summary of the Invention

[0009] The problem that the invention aims to solve

[0010] However, because the protective component is located inside the shielding tube, the inner diameter of the shielding tube needs to be larger than the outer diameter of the protective component. In this case, as the inner diameter of the shielding tube increases, the outer diameter of the shielding tube may also increase. Consequently, the overall size of the wire harness may increase.

[0011] The purpose of this disclosure is to provide a wire harness that can suppress the increase in body size.

[0012] Solution for solving the problem

[0013] 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 second cylindrical member made of metal having a first end and a second end located on the side opposite to the first end, fixed to the outer peripheral surface of the first cylindrical member, the first end covering the outer periphery of the first cylindrical member, the second end covering the outer periphery of a lead-out portion extending from the end of the first cylindrical member in the wire member; and a protective member fixed to the inner peripheral surface of the second cylindrical member, protecting the lead-out portion by covering its outer periphery, the second cylindrical member having a protrusion that protrudes from the inner peripheral surface of the second cylindrical member toward the outer peripheral surface of the first cylindrical member and engages with the first cylindrical member.

[0014] Invention Effects

[0015] According to this disclosure, the size of the wire harness can be suppressed. Attached Figure Description

[0016] Figure 1 This is a schematic structural diagram of a wire harness according to one embodiment.

[0017] Figure 2 yes Figure 1 A sectional view at part A.

[0018] Figure 3 This is an exploded perspective view showing the first cylindrical member and protective member of one embodiment.

[0019] Figure 4 This is a cross-sectional view showing a modified example of the wire harness. Detailed Implementation

[0020] [Description of embodiments of this disclosure]

[0021] The embodiments of this disclosure are first described by listing them.

[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 second cylindrical member made of metal having a first end and a second end located on the side opposite to the first end, fixed to the outer peripheral surface of the first cylindrical member, the first end covering the outer periphery of the first cylindrical member, the second end covering the outer periphery of a lead-out portion extending from the end of the first cylindrical member in the wire member; and a protective member fixed to the inner peripheral surface of the second cylindrical member, protecting the lead-out portion by covering the outer periphery of the lead-out portion, the second cylindrical member having a protrusion that protrudes from the inner peripheral surface of the second cylindrical member toward the outer peripheral surface of the first cylindrical member and engages with the first cylindrical member.

[0023] According to this structure, the protective member covering the outer periphery of the lead-out portion is fixed to the inner circumferential surface of the second cylindrical member. Therefore, compared with the structure where the protective member is fixed to the inner circumferential surface of the first cylindrical member, the inner diameter of the first cylindrical member can be reduced, and consequently, the outer diameter of the first cylindrical member can be reduced. Therefore, the increase in the size of the wire harness can be suppressed.

[0024] Furthermore, according to the above structure, the second cylindrical member has a protrusion that engages with the first cylindrical member, thus eliminating the need for a dedicated component for fixing the second cylindrical member to the first cylindrical member. Therefore, the increase in the number of components in the wire harness can be suppressed.

[0025] [2] Preferably, the portion of the wire component covered by the first cylindrical member is larger than the portion covered by the second cylindrical member.

[0026] According to this structure, the proportion occupied by the first cylindrical member along the length of the wire harness is larger than that occupied by the second cylindrical member. Therefore, by reducing the outer diameter of the first cylindrical member, the effect of suppressing the increase in the size of the wire harness becomes significant.

[0027] [3] Preferably, the protrusion is provided throughout the circumference of the second cylindrical member.

[0028] According to this structure, the second cylindrical member engages with the first cylindrical member throughout its circumference via the protrusion. Therefore, the second cylindrical member can be securely fixed to the first cylindrical member.

[0029] [4] 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.

[0030] 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.

[0031] [5] Preferably, the protective member is opposite the sealing member in the axial direction of the first cylindrical member.

[0032] According to this structure, when the sealing member moves toward the protective member in the axial direction of the first cylindrical member, the sealing member comes into contact with the portion of the protective member opposite to the sealing member. This prevents the sealing member from detaching from the first cylindrical member. Therefore, it prevents a decrease in the water-stopping performance of the first cylindrical member.

[0033] [6] Preferably, the protective member is in contact with the sealing member in the axial direction of the first cylindrical member.

[0034] This structure further prevents the sealing member from detaching from the first cylindrical member. Therefore, it further prevents the reduction of the water-stopping performance of the first cylindrical member.

[0035] [7] 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.

[0036] 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.

[0037] [8] Preferably, the wire member has a first wire and a second wire electrically connected to the first wire. The first wire has a single core wire composed of a single conductor and an insulating covering portion covering the outer periphery of the single core wire. The second wire has a stranded wire composed of multiple metal wires twisted together and an insulating covering portion covering the outer periphery of the stranded wire. A connecting portion is provided in a portion along the length of the lead-out portion. The first wire leading out from the end of the first cylindrical member and the second wire located outside the first cylindrical member are electrically connected at the connecting portion.

[0038] At the connection point, the single-core wire and the stranded wire overlap each other, which may increase the cross-sectional size of the connection point. Therefore, for example, if the outer periphery of the connection point is covered by the first cylindrical member, the inner diameter of the first cylindrical member needs to be larger than the cross-sectional size of the connection point.

[0039] In this respect, according to the above structure, the connecting portion is located on a portion along the length of the lead-out portion. That is, the connecting portion is located outside the first cylindrical member. Therefore, even if the cross-sectional size of the connecting portion increases, it is not necessary to increase the inner diameter of the first cylindrical member. Thus, compared with a structure where the outer periphery of the connecting portion is covered by the first cylindrical member, the inner diameter of the first cylindrical member can be reduced, and consequently, the outer diameter of the first cylindrical member can be reduced. Therefore, the increase in the size of the wire harness can be further suppressed.

[0040] [9] Preferably, the outer periphery of the connecting portion is covered by the protective member.

[0041] This structure can suppress interference between the connection part and objects located around the wire harness.

[0042]

[10] Preferably, the protective member has a fixing part, and the lead-out part is fixed in the fixing part.

[0043] According to this structure, by fixing the lead-out portion to the fixed portion, the change in the length of the lead-out portion extending from the end of the first cylindrical member can be suppressed.

[0044]

[11] The protective member has a fixing part, on which the lead-out part is fixed, and the fixing part is disposed in the length direction of the lead-out part at a position farther from the end of the first cylindrical member than the portion of the protective member that covers the outer periphery of the connecting part.

[0045] According to this structure, the portion of the lead-out portion that is farther from the end of the first cylindrical member than the connecting portion is fixed in the fixing portion. Therefore, even if an external force is applied to the lead-out portion, the transmission of such external force to the connecting portion can be suppressed. Thus, the reduction in the connection reliability of the connecting portion can be suppressed.

[0046] Furthermore, according to the above structure, by fixing the lead-out portion to the fixing portion, the length management of the lead-out portion extending from the end of the first cylindrical member becomes easier.

[0047] [Details of the embodiments of this disclosure]

[0048] Specific examples of the wire 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 by way of the claims, it is intended to include all modifications within the meaning and scope equivalent to 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 local notches, etc.

[0049] (Overall structure of wire harness 10)

[0050] 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.

[0051] Inverter 11 is connected to an electric motor (not shown) for driving the wheels, which serves as the power source for the vehicle. 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.

[0052] 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 assembled to 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.

[0053] like Figure 2 As 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 protective member 90 for fixing to the inner peripheral surface 60a of the second cylindrical member 60.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] (Structure of electrical component 20)

[0058] 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, a portion of the wiring harness 10 located under the vehicle floor. The second wire 35 is connected to the end of the first wire 30.

[0059] 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.

[0060] 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.

[0061] (Structure of the first wire 30)

[0062] 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.

[0063] 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.

[0064] 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 whose main component is a polyolefin resin such as cross-linked polyethylene or cross-linked polypropylene can be used. As a material for the insulating covering portion 32, a single material can be used, or two or more materials can be appropriately combined. The insulating covering portion 32 can, for example, be formed by extrusion molding of the single-core wire 31.

[0065] 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.

[0066] (Structure of the second wire 35)

[0067] 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.

[0068] 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.

[0069] 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 a synthetic resin. For example, a synthetic resin with cross-linked polyethylene, cross-linked polypropylene, or other polyolefin resins as its main components 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.

[0070] 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.

[0071] 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.

[0072] (Structure of the first cylindrical member 40)

[0073] The first cylindrical member 40 is, for example, cylindrical. 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 vehicle floor in the longitudinal direction of the vehicle. The first cylindrical member 40 covers the outer periphery of the portion of the wire member 20 that is routed under the vehicle floor. In this embodiment, the first cylindrical member 40 covers the outer periphery of the first wire 30 routed under the vehicle floor.

[0074] 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.

[0075] 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 substantially constant along the axial direction of the first cylindrical member 40.

[0076] 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.

[0077] 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. Alternatively, this end and the connector C2 can 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 by an outer casing such as a sheath.

[0078] (Structure of sealing component 50)

[0079] 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, generally cylindrical.

[0080] 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.

[0081] The sealing member 50 has two insertion holes 51 for each of the first wires 30 to be 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.

[0082] (Structure of the second cylindrical member 60)

[0083] 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.

[0084] 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.

[0085] 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.

[0086] The second cylindrical member 60 has a protrusion 63 protruding 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 moving 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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 of the second cylindrical member 60.

[0092] (Structure of braided yarn 70)

[0093] 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 covers the outer periphery of the lead-out portion 21 substantially throughout its length. As the braided wire 70, braided wires made of various metal wires or braided wires composed of a combination of 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.

[0094] 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.

[0095] 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 crushed than the other portions of part 71.

[0096] 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.

[0097] 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 also covers 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.

[0098] 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 in which annular protrusions and annular recesses are alternately connected along its length.

[0099] (Structure with component 80)

[0100] 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.

[0101] The tape member 80 has an adhesive layer on one side of its 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.

[0102] (Structure of protective component 90)

[0103] like Figure 2 and Figure 3 As shown, the protective member 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 protective member 90 is formed, for example, from an insulating resin material.

[0104] The protective member 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 along its axial direction, fixing the lead-out portion 21 to the fixing portion 92. Additionally, the protective member 90 has: an annular flange portion 93 protruding outwards from the aforementioned end of the insertion portion 91 along its entire circumference; and two engaging protrusions 94 protruding in opposite directions from the outer peripheral surface of the insertion portion 91. Each engaging protrusion 94 is positioned away from the flange portion 93 along the axial direction of the insertion portion 91.

[0105] The protective member 90 has a slit 90a that extends integrally throughout the axial direction. The slit 90a extends throughout the insertion portion 91 and the flange portion 93. The protective member 90 is configured to elastically deform by narrowing the interval of the slit 90a in a diameter-reducing manner.

[0106] 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.

[0107] 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.

[0108] The outer diameter of the insertion portion 91 is larger than the outer diameter of the first cylindrical member 40. Therefore, the thickness of the insertion portion 91 is greater than the thickness of the first cylindrical member 40. The outer diameter of the insertion portion 91 is approximately the same as the inner diameter of the second cylindrical member 60.

[0109] The fixing part 92 protrudes in the axial direction of the insertion part 91 in a direction away from the insertion part 91. The fixing part 92 is located in the longitudinal direction of the lead-out part 21 at a position 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 located in the circumferential direction of the insertion part 91 at a position different from that of the slit 90a.

[0110] 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.

[0111] 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 a strap member 81. More specifically, multiple second wires 35 are also fixed in the fixing portion 92 by means of a strap member 81. The strap member 81 is wound multiple times around the fixing portion 92 and each of the second wires 3. Furthermore, the strap member 81 can be a strap member of the same type as the strap member 80 described above, or it can be a strap member different from the strap member 80.

[0112] 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.

[0113] 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 protective member 90 is fixed to the inner circumferential surface 60a of the second cylindrical member 60.

[0114] (Structure of housing 100)

[0115] like Figure 1 As shown, the housing 100 is, for example, cylindrical. 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, for example, formed of an insulating resin material.

[0116] (Structure of shielding shell 110)

[0117] 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.

[0118] (Structure of fixed component 120)

[0119] The fixing member 120 forms an annulus 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.

[0120] 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.

[0121] The function and effects of this implementation method are explained.

[0122] (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 second cylindrical member 60 made of metal fixed to the outer peripheral surface 40b of the first cylindrical member 40; and a protective member 90 fixed to the inner peripheral surface 60a of the second cylindrical member 60, covering the outer periphery of the lead-out portion 21. 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 and engages with the first cylindrical member 40.

[0123] With this structure, the protective member 90 covering the outer periphery of the lead-out portion 21 is fixed to the inner peripheral surface 60a of the second cylindrical member 60. Therefore, compared with the structure where the protective member 90 is fixed to the inner peripheral surface 40a of the first cylindrical member 40, the inner diameter of the first cylindrical member 40 can be reduced, and consequently, the outer diameter of the first cylindrical member 40 can be reduced. Therefore, the increase in the size of the wire harness 10 can be suppressed.

[0124] Furthermore, according to the above structure, the second cylindrical member 60 has a protrusion 63 that engages with the first cylindrical member 40, thus eliminating the need for a dedicated component for fixing the second cylindrical member 60 to the first cylindrical member 40. Therefore, the increase in the number of components in the wire harness 10 can be suppressed.

[0125] (2) The portion of the wire component 20 covered by the first cylindrical component 40 is longer than the portion covered by the second cylindrical component 60.

[0126] With this structure, the first cylindrical member 40 occupies a larger proportion than the second cylindrical member 60 along the length of the wire harness 10. Therefore, by reducing the outer diameter of the first cylindrical member 40, the effect of suppressing the increase in the size of the wire harness 10 becomes significant.

[0127] (3) The protrusion 63 is provided throughout the circumference of the second cylindrical member 60.

[0128] With this structure, the second cylindrical member 60 engages with the first cylindrical member 40 throughout its circumference via the protrusion 63. Therefore, the second cylindrical member 60 can be securely fixed to the first cylindrical member 40.

[0129] (4) 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.

[0130] 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.

[0131] (5) The protective member 90 contacts the sealing member 50 in the axial direction of the first cylindrical member 40.

[0132] With this structure, the movement of the sealing member 50 toward the protective member 90 in the axial direction of the first cylindrical member 40 can be restricted. This prevents the sealing member 50 from detaching from the first cylindrical member 40. Therefore, it prevents a decrease in the water-stopping performance of the first cylindrical member 40.

[0133] (6) 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.

[0134] 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.

[0135] (7) A connecting part 22 is provided in a portion along the length of the lead-out part 21, and the single core wire 31 of the first wire 30 led out from the end 41 of the first cylindrical member 40 and the stranded wire 36 of the second wire 35 located outside the first cylindrical member 40 are electrically connected in the connecting part 22.

[0136] In the connecting portion 22, the single-core wire 31 and the stranded wire 36 overlap each other, which may increase the cross-sectional size of the connecting portion 22. Therefore, for example, if the outer periphery of the connecting portion 22 is covered by the first cylindrical member 40, it is necessary to make the inner diameter of the first cylindrical member 40 larger than the cross-sectional size of the connecting portion 22.

[0137] In this respect, according to the above structure, the connecting portion 22 is provided on a portion along the length of the lead-out portion 21. That is, the connecting portion 22 is located outside the first cylindrical member 40. Therefore, even if the cross-sectional size of the connecting portion 22 increases, it is not necessary to increase the inner diameter of the first cylindrical member 40. Thus, compared with a structure in which the outer periphery of the connecting portion 22 is covered by the first cylindrical member 40, the inner diameter of the first cylindrical member 40 can be reduced, and consequently, the outer diameter of the first cylindrical member 40 can be reduced. Therefore, the increase in the size of the wire harness 10 can be suppressed.

[0138] (8) The outer periphery of the connecting part 22 is covered by the protective part 90.

[0139] With this structure, interference between the connector 22 and objects located around the wire harness 10 can be suppressed.

[0140] (9) The protective member 90 has: an insertion portion 91 that covers the outer periphery of the connecting portion 22; and a fixing portion 92 that protrudes from one end face of the insertion portion 91 in the axial direction and fixes the lead-out portion 21 to the fixing portion 92. The fixing portion 92 is provided in the length direction of the lead-out portion 21 at a position farther from the end 41 of the first cylindrical member 40 than the insertion portion 91.

[0141] With this structure, 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 to the fixing portion 92. Therefore, even if an external force is applied to the lead-out portion 21, the transmission of such external force to the connecting portion 22 can be suppressed. Thus, the reduction in the connection reliability of the connecting portion 22 can be suppressed.

[0142] Furthermore, according to the above structure, the length management of the lead-out portion 21, which is led out from the end 41 of the first cylindrical member 40, becomes easier by fixing the lead-out portion 21 to the fixing portion 92.

[0143] (10) The lead-out part 21 is fixed to the fixing part 92 by the belt member 81.

[0144] With this structure, the lead-out portion 21 inserted into the insertion portion 91 is fixed to the fixing portion 92 by the strap member 81. Therefore, even if the outer diameter of the wire in the lead-out portion 21 or the number of wires are different, the common protective member 90 can be used.

[0145] (11) Both the first cylindrical member 40 and the second cylindrical member 60 are formed of aluminum alloy.

[0146] According to this structure, the first cylindrical member 40 and the second cylindrical member 60 are formed of the same metal material. Therefore, at the contact portion between the first cylindrical member 40 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 contact portion, it is not necessary to provide an external component that covers the outer periphery of the contact portion. 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.

[0147] like Figure 2 As 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.

[0148] like Figure 2 As shown in the example, by inserting the first cylindrical member 40 into the second cylindrical member 60, and forming a recess 64 on the outer peripheral surface of the second cylindrical member 60 with the first cylindrical member 40 and the second cylindrical member 60 partially overlapping, a protrusion 63 is formed on the inner peripheral surface of the second cylindrical member 60, and a recess 43 is formed on the outer peripheral surface of the first cylindrical member 40, while a protrusion 42 is formed 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.

[0149] <Variation Example>

[0150] This embodiment can be implemented with the following modifications. This embodiment and the following variations can be combined with each other without contradiction.

[0151] like Figure 4As shown, the braided wire 70 can also be omitted from the wire harness 10. In this case, the second cylindrical member 60 is directly fixed to the outer peripheral surface 40b of the first cylindrical member 40 by the engagement of the protrusion 63 and the recess 43. In this case, it is preferable that the wire member 20 is an unshielded wire that does not have an electromagnetic shielding structure. Even with such a structure, it can achieve the effects compared to the effects (1) to (11) described above.

[0152] Alternatively, a hole can be used as the fixing part 92, through which the insertion part 91 passes in the axial direction and holds the outer periphery of the lead-out part 21. In this case, the hole can hold each wire component 20 individually or multiple wire components 20 together.

[0153] It can also replace the strap component 81, for example, by using a resin strap to fix the lead-out part 21 to the fixing part 92.

[0154] ■A connecting part 22 may also be fixed to the fixing part 92.

[0155] The fixing part 92 can also be omitted from the protective member 90. In this case, the lead-out part 21 is not fixed to the protective member 90. That is, the protective member 90 can also be a protective member that only covers the outer periphery of the lead-out part 21.

[0156] The insertion portion 91 may also be an insertion portion that covers the outer periphery of a portion of the lead-out portion 21 that is different from the connecting portion 22. In other words, the connecting portion 22 may also be provided in the portion of the lead-out portion 21 located outside the protective member 90.

[0157] The wire component 20 can be constructed using only the first wire 30 or only the second wire 35.

[0158] The first wire 30 may also have stranded wire 36.

[0159] The second wire 35 can also have a single-core wire 31.

[0160] The protrusion 42 may also contact the sealing member 50 in the axial direction of the first cylindrical member 40.

[0161] The protrusion 42 can also be omitted from the first cylindrical member 40. In this case, the protrusion 63 can be positioned at any position in the axial direction of the second cylindrical member 60, as long as it is the portion of the second cylindrical member 60 that positions the first portion 71 on the inner circumferential side. 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.

[0162] The insertion portion 91 may also be positioned away from the sealing member 50 along the axial direction of the first cylindrical member 40. That is, a gap may be provided between the insertion portion 91 and the sealing member 50 along the axial direction of the first cylindrical member 40. In this case, it is preferable that the gap is smaller than the length of the sealing member 50 along its axial direction. With this structure, when the sealing member 50 moves toward the protective member 90 along the axial direction of the first cylindrical member 40, the sealing member 50 contacts the insertion portion 91. This prevents the sealing member 50 from detaching from the first cylindrical member 40. Therefore, it prevents a decrease in the water-stopping properties of the first cylindrical member 40.

[0163] The inner diameter of the insertion part 91 can be the same as or larger than the inner diameter of the first cylindrical member 40.

[0164] Sealing component 50 can also be omitted.

[0165] Component 80 can also be omitted.

[0166] 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.

[0167] Multiple protrusions 63 may also be provided at intervals along the axial direction of the second cylindrical member 60.

[0168] 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.

[0169] The portion of the wire member 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.

[0170] Explanation of reference numerals in the attached figures

[0171] C1 connector

[0172] C2 connector

[0173] 10 Wire Harness

[0174] 11 Inverter

[0175] 12 High-voltage batteries

[0176] 20. Electrical wiring components

[0177] 21 Introduction

[0178] 21a end

[0179] 22 Connecting parts

[0180] 23 Covering components

[0181] 30th Electric Wire

[0182] 31 Single-core wire

[0183] 32 Insulation Covering Part

[0184] 35 Second Wire

[0185] 36 stranded wire

[0186] 37 Insulation Covering Part

[0187] 40 First cylindrical component

[0188] 40a Inner circumferential surface

[0189] 40b outer perimeter

[0190] 41 end

[0191] 42. Protrusion

[0192] 43 recess

[0193] 50 Sealing components

[0194] 51 Through Hole

[0195] 60 Second cylindrical component

[0196] 60a inner surface

[0197] 60b outer perimeter

[0198] 61 First end

[0199] 62 Second end

[0200] 63. Protrusion

[0201] 64 recess

[0202] 65 Through hole

[0203] 70 braided yarn

[0204] 71 Part 1

[0205] 72 Part 2

[0206] 73 Part 3

[0207] 80 with components

[0208] 81 with components

[0209] 90 Protective components

[0210] 90a slit

[0211] 91 Insertion section

[0212] 92 Fixing part

[0213] 93 Flange portion

[0214] 94. A prominent kink.

[0215] 100 housing

[0216] 110 Shielding shell

[0217] 120 Fixed components

[0218] 130 External components

Claims

1. A wire harness, comprising: An electrical wire component having a first wire and a second wire, the first wire having a single-core wire composed of a single conductor, and the second wire having a stranded wire composed of multiple metal wires twisted together. A first cylindrical metal member covers the outer periphery of the wire member; A second cylindrical member made of metal, having a first end and a second end located on the side opposite to the first end, is fixed to the outer peripheral surface of the first cylindrical member. The first end covers the outer periphery of the first cylindrical member, and the second end covers the outer periphery of the lead-out portion extending from the end of the first cylindrical member in the wire member; and A protective element, fixed to the inner circumferential surface of the second cylindrical member, protects the lead-out portion by covering its outer periphery. 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, and engages with the first cylindrical member. A connecting portion is provided, which electrically connects the first wire extending from the end of the first cylindrical member to the second wire located outside the first cylindrical member. The protective member has an insertion portion that covers the outer periphery of the connecting portion, the inner diameter of which is smaller than the inner diameter of the first cylindrical member.

2. The wire harness according to claim 1, wherein, The portion of the wire component covered by the first cylindrical member is larger than the portion covered by the second cylindrical member.

3. The wire harness according to claim 1, wherein, The protrusion is provided throughout the circumference of the second cylindrical member.

4. The wire harness according to any one of claims 1 to 3, wherein, The wire harness has 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.

5. The wire harness according to claim 4, wherein, The protective member is positioned opposite the sealing member in the axial direction of the first cylindrical member.

6. The wire harness according to claim 5, wherein, The protective member contacts the sealing member in the axial direction of the first cylindrical member.

7. The wire harness according to claim 4, 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.

8. The wire harness according to any one of claims 1 to 3, wherein, The first wire has a single-core wire composed of a single conductor and an insulating covering portion that encloses the outer periphery of the single-core wire. The second wire has a stranded wire formed by twisting together multiple metal wires, and an insulating covering portion that covers the outer periphery of the stranded wire.

9. The wire harness according to any one of claims 1 to 3, wherein, The protective component has a fixing part, and the lead-out part is fixed in the fixing part.

10. The wire harness according to claim 9, wherein, The fixing part is positioned along the length of the lead-out part at a position farther from the end of the first cylindrical member than the portion of the protective member that covers the outer periphery of the connecting part.

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