Wire harness

Abstract

The invention provides a wire harness. The present invention is provided with: a first cable and a second cable each having a plurality of electric wires; a connector provided at one end of the first cable; and a protection member that covers at least a portion of the plurality of wires of the second cable, the wire harness being capable of appropriately protecting the plurality of wires of the second cable. A wire harness (1) is provided with: a trunk cable (3) and a branch cable (4) each having a plurality of electric wires; a first connector (21) provided at one end of the trunk cable (3); and a resin tube (5) that covers at least a portion of the plurality of wires of the branch cable (4). One end of the resin tube (5) is covered by a molded body (6) together with the first connector (21).

Description

Technical Field

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

[0002] Conventionally, for example, a wiring harness having a plurality of connectors and cables is used to electrically connect a plurality of connection objects in a vehicle. As a wiring harness, the wiring harness described in Patent Document 1 includes: a first wire group, one end of which is connected to a first connector and the other end is connected to a second connector; and a second wire group, one end of which is connected to the first connector and branches from the first wire group at a position of the second connector or a connection object connected to the second connector and the other end is connected to a third connector. An exterior member such as a corrugated tube or a spirally wound tape is provided in a portion between the second connector and the third connector so as to cover the second wire group.

[0003] Prior art literature

[0004] Patent Document 1: Japanese Patent No. 6761398

[0005] When the wiring harness configured as described above is arranged between the vehicle body side and the wheel side in a vehicle, for example, it is easy to cause cracks caused by flying stones or the like bounced by the tire. In the wiring harness described in Patent Document 1, the second wire group is protected by an exterior component, but when a corrugated tube is used as an exterior component, if the position of the corrugated tube in the length direction of the second wire group is uncertain, it may not be possible to properly protect the part that is prone to cracks. In addition, when an adhesive tape is used as an exterior component, the labor of winding the adhesive tape into a spiral shape and the peeling caused by the decrease in adhesion over time may become a problem. Summary of the invention

[0006] Therefore, an object of the present invention is to provide a wiring harness comprising: first and second cables, each having a plurality of electric wires; a connector, which is arranged at one end of the first cable; and a protective component, which covers at least a portion of the plurality of electric wires of the second cable, so that the wiring harness can appropriately protect the plurality of electric wires of the second cable.

[0007] The object of the present invention is to solve the above-mentioned problems and provide a wiring harness comprising: a first and a second cable, each having a plurality of electric wires; a side connector, which is arranged at one end of the first cable; and a protective component, which covers at least a portion of the plurality of electric wires of the second cable, wherein one end of the protective component is covered by a molded body together with the one side connector.

[0008] The effects of the present invention are as follows.

[0009] According to the wire harness of the present invention, the plurality of electric wires of the second cable can be appropriately protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic configuration diagram showing a configuration example of a vehicle equipped with the wire harness according to the first embodiment of the present invention.

[0011] Figure 2 (a) Yes Figure 1 (b) is an explanatory diagram in which the resin tube (a) is virtually represented by two-dot chain lines and the inside of the resin tube is represented by solid lines.

[0012] Figure 3 This is a structural diagram of the wiring harness.

[0013] Figure 4 (a) Yes Figure 3 (b) is a cross-sectional view of the AA line. Figure 3 (c) is a cross-sectional view of the BB line. Figure 3 Cross-sectional view of the CC line.

[0014] Figure 5 It is an explanatory diagram showing the first connector and the wiring structure of its periphery.

[0015] Figure 6 It is a structural diagram showing a modified example of the wiring structure of the trunk cable and the branch cable.

[0016] Figure 7 This is a structural diagram showing a modified example in which a heat shrink tube is arranged between the front end portion of the resin tube on the third connector side and the third connector.

[0017] Figure 8 (a) is a structural diagram of a wire harness according to the second embodiment. (b) is a cross-sectional view taken along line DD of (a).

[0018] Fig. 9 (a) is a structural diagram of a wire harness according to a third embodiment. (b) is a cross-sectional view of a branch cable and a sensor unit in the wire harness according to the third embodiment.

[0019] In the figure: 1—wiring harness, 100—vehicle, 11—wheel, 21—first connector (connector on one side), 210—connector housing, 22—second connector (connector on the other side), 23—third connector, 3—trunk cable (first cable), 31~34—first to fourth signal lines (wires), 4, 4A, 4B—branch cables (second cables), 41, 42—fifth and sixth signal lines (wires), 43—sheath (protective component), 5—resin tube (protective component), 6—molded body, 7—wheel speed sensor, 71—sensor element, 72—sealing component, 8—brake controller (wheel side control device), 9—master controller (body side control device). DETAILED DESCRIPTION

[0020] [First embodiment]

[0021] Figure 1 1 is a schematic structural diagram showing a structural example of a vehicle 100 equipped with the wire harness 1 according to the first embodiment of the present invention. The wheel 11 of the vehicle 100 having the wheel 111 and the tire 112 is supported on the vehicle body 10 through the suspension device 12. The suspension device 12 is configured to have an upper arm 121, a lower arm 122, a shock absorber 123, and a suspension spring 124. One end of each of the upper arm 121 and the lower arm 122 is connected to the steering knuckle 13, and the other end is connected to the vehicle body 10.

[0022] The knuckle 13 has a first connection portion 131 connecting the upper arm 121 and the shock absorber 123, a second connection portion 132 connecting the lower arm 122, and a mounting portion 133 for mounting the electric brake unit 16. In addition, the knuckle 13 has an outer ring 141 of the hub unit 14 rotatably supporting the wheel 11 fixed thereto.

[0023] The hub unit 14 has an outer ring 141 and a hub ring 142 supported to rotate freely relative to the outer ring 141. A plurality of rolling elements (not shown) are arranged between the inner peripheral surface of the outer ring 141 and the outer peripheral surface of the hub ring 142 and are held by a retainer. A wheel mounting flange 142a is provided on the hub ring 142, and the wheel 111 is mounted on the wheel mounting flange 142a together with the brake disc 15 by a plurality of hub bolts 143. The brake disc 15 integrally has a friction portion 151 that frictionally slides with the brake pads 161 and 162 of the electric brake unit 16 and a fixing portion 152 fixed to the wheel mounting flange 142a of the hub ring 142.

[0024] A wheel speed sensor 7 is mounted on the outer ring 141 of the hub unit 14. The wheel speed sensor 7 detects the rotation speed of the hub ring 142 relative to the outer ring 141 as the rotation speed of the wheel 11. Specifically, a magnetic field detection element such as a Hall IC is used to detect changes in the magnetic field of a magnetic encoder mounted on the hub ring 142, and a pulse signal with a pulse interval corresponding to the rotation speed of the hub ring 142 relative to the outer ring 141 is output as a detection signal.

[0025] The electric brake unit 16 includes an outer brake pad 161 and an inner brake pad 162, a brake caliper 163 to which the outer brake pad 161 is mounted, a piston 164 to which the inner brake pad 162 is mounted, and a brake caliper bracket 165 fixed to the mounting portion 133 of the steering knuckle 13. The brake caliper 163 is supported by the brake caliper bracket 165 and can move parallel to the rotation axis of the wheel 11.

[0026] The vehicle 100 includes a brake controller 8 for controlling the electric brake unit 16 and a master controller 9 for comprehensively controlling the vehicle 100. The brake controller 8 and the wheel speed sensor 7 are arranged on the wheel side, and move in the up-down direction with the wheel 11 relative to the vehicle body 10 as the suspension spring 124 expands and contracts. The master controller 9 is arranged on the vehicle body side. The brake controller 8 is one form of the "wheel side control device" of the present invention, and the master controller 9 is one form of the "vehicle side control device" of the present invention.

[0027] The wire harness 1 connects the brake controller 8, the wheel speed sensor 7, and the main controller 9. Next, the structure of the wire harness 1 will be described in detail.

[0028] Figure 2 (a) Yes Figure 1 A partial enlarged view of . Figure 2 (b) is represented by a two-dot chain line. Figure 2 (a) is an explanatory diagram of the resin tube 5 of the wire harness 1, in which the inside of the resin tube 5 is indicated by solid lines. Figure 3 This is a structural diagram of the wiring harness 1. Figure 4 (a) Yes Figure 3 Cross-sectional view along line AA. Figure 4 (b) Yes Figure 3 Cross-sectional view of line BB. Figure 4 (c) Yes Figure 3 Cross-sectional view of the CC line.

[0029] The wiring harness 1 includes: a first connector 21, which can be detachably mounted on the brake controller 8; a second connector 22, which can be detachably mounted on the main controller 9; a trunk cable 3, which is located between the first connector 21 and the second connector 22; a branch cable 4, which extends from the first connector 21 side to a direction different from the trunk cable 3; a third connector 23, which is arranged at the front end of the branch cable 4 and can be detachably mounted on the wheel speed sensor 7; a resin tube 5 as a protective component, which covers at least a part of the multiple wires of the branch cable 4; and a molded body 6, which is molded. Figure 4 In (c), a mold 60 for molding the molded body 6 is indicated by a two-dot chain line.

[0030] The trunk cable 3 and the branch cable 4 each have a plurality of electric wires. In the present embodiment, the trunk cable 3 and the branch cable 4 have a plurality of signal wires as the plurality of electric wires. However, some or all of the plurality of electric wires of the trunk cable 3 and the branch cable 4 may also be power wires or ground wires.

[0031] The first connector 21 is one form of the "one side connector" of the present invention, and the second connector 2 is one form of the "other side connector" of the present invention. The trunk cable 3 is one form of the "first cable" of the present invention, and the branch cable 4 is one form of the "second cable" of the present invention. The trunk cable 3 is longer than the branch cable 4, has more wires than the branch cable 4, and has a larger outer diameter than the branch cable 4.

[0032] The trunk cable 3 includes first to fourth signal lines 31 to 34 and a sheath 35 covering the first to fourth signal lines 31 to 34. The first signal line 31 and the second signal line 32, and the third signal line 33 and the fourth signal line 34 are twisted together to form a twisted pair. In addition, the first signal line 31 and the second signal line 32 may also be covered by an inner sheath. In addition, the third signal line 33 and the fourth signal line 34 may also be covered by an inner sheath.

[0033] The first to fourth signal lines 31 to 34 are insulated wires formed by covering the center conductors 311, 321, 331, 341 with insulators 312, 322, 332, 342. The center conductors 311, 321, 331, 341 are stranded wires formed by twisting a plurality of wires made of copper or copper alloy. The insulators 312, 322, 332, 342 are made of insulating resins such as polyethylene and fluororesin. The outermost layer of the trunk cable 3, i.e., the sheath 35, is made of, for example, polyurethane resin. In the present embodiment, the sheath 35 is formed by full extrusion. In addition, in the present embodiment, the trunk cable 3 includes the first to fourth signal lines 31 to 34 (signal lines only), but may also include a plurality of power lines (for supplying power to the electric brake unit 16) and a plurality of signal lines in combination.

[0034] The branch cable 4 is composed of the fifth and sixth signal lines 41 and 42. The fifth and sixth signal lines 41 and 42 extend from the first connector 21 side of the two ends of the trunk cable 3 toward the wheel speed sensor 7. The fifth and sixth signal lines 41 and 42 are insulated wires formed by covering the center conductors 411 and 421 with insulators 412 and 422, and are twisted to form a twisted pair cable. The center conductors 411 and 421 are twisted wires formed by twisting a plurality of wires made of copper or copper alloy. The insulators 412 and 422 are made of insulating resins such as polyethylene and fluororesin. In addition, the fifth signal line 41 and the sixth signal line 42 may not be twisted. The fifth and sixth signal lines 41 and 42 transmit the detection signals of the wheel speed sensor 7.

[0035] The resin tube 5 is a cylindrical body that accommodates the fifth and sixth signal lines 41 and 42, and the fifth and sixth signal lines 41 and 42 are inserted into the resin tube 5. The resin tube 5 is made of, for example, polyurethane resin. In the present embodiment, the resin tube 5 covers substantially the entirety of the fifth and sixth signal lines 41 and 42 between the first connector 21 and the third connector 23, except for the vicinity of the third connector 23. However, the resin tube 5 only needs to cover at least a portion of the length direction of the fifth and sixth signal lines 41 and 42 between the first connector 21 and the third connector 23, and may cover the entirety. In addition, the resin tube 5 may also be formed to have a curved portion in advance along the wiring path of the branch cable 4. In addition, the gap at the end of the resin tube 5 on the side of the third connector 23 may be blocked with a filling material such as an adhesive or silicon.

[0036] Figure 5 This is an explanatory diagram showing the wiring structure of the first connector 21 and its surroundings. The first connector 21 has first to sixth terminals 211 to 216 and a resin connector housing 210 that holds the first to sixth terminals 211 to 216. The center conductors 311, 321, 331, 341, 411, 421 of the first to sixth signal lines 31 to 34, 41, 42 are crimped to the first to sixth terminals 211 to 216. The connector housing 210 accommodates a portion of each of the first to sixth signal lines 31 to 34, 41, 42 and a portion of each of the first to sixth terminals 211 to 216.

[0037] The first connector 21 is engaged with a connector 81 mounted on a substrate 80 of the brake controller 8. The connector 81 has first to sixth connection terminals 811 to 816 to which the first to sixth terminals 211 to 216 of the first connector 21 are connected, respectively. The first and second connection terminals 811 and 812 are connected to a control circuit 82 of the brake controller 8 through wiring patterns 801 and 802 formed on the substrate 80. The control circuit 82 controls the electric motor, which is the driving source of the electric brake unit 16, based on a control signal sent from the main controller 9. The brake caliper 163 and the piston 164 of the electric brake unit 16 are actuated by the driving force of the electric motor.

[0038] The brake controller 8 and the main controller 9 communicate via the first and second signal lines 31 and 32 of the trunk cable 3. The first and second signal lines 31 and 32 transmit control signals between the brake controller 8 and the main controller 9. The control signal sent from the main controller 9 to the brake controller 8 includes information on the braking force of the wheel 11 to be generated by the electric brake unit 16. The control signal sent from the brake controller 8 to the main controller 9 includes information indicating the operating state of the electric brake unit 16, such as the rotation speed of the electric motor and the current supplied to the electric motor.

[0039] The third connection terminal 813 and the fifth connection terminal 815, and the fourth connection terminal 814 and the sixth connection terminal 816 of the connector 81 are electrically short-circuited. As a result, the central conductor 411 of the fifth signal line 41 of the branch cable 4 is electrically connected to the central conductor 331 of the third signal line 33 of the trunk cable 3, and the central conductor 421 of the sixth signal line 42 of the branch cable 4 is electrically connected to the central conductor 341 of the fourth signal line 34 of the trunk cable 3.

[0040] exist Figure 5 In the example shown, the third connection terminal 813 is electrically connected to the fifth connection terminal 815 by a short-circuit component 817, and the fourth connection terminal 814 is electrically connected to the sixth connection terminal 816 by a short-circuit component 818. The short-circuit components 817 and 818 are metal parts made of conductive metal. In addition, the third connection terminal 813 and the fifth connection terminal 815, and the fourth connection terminal 814 and the sixth connection terminal 816 can also be electrically short-circuited by, for example, a wiring pattern formed on the substrate 80.

[0041] The detection signal of the wheel speed sensor 7 transmitted through the fifth and sixth signal lines 41 and 42 is propagated to the third and fourth signal lines 33 and 34 of the trunk cable 3 via the short-circuit components 817 and 818, and is sent to the main controller 9 through the third and fourth signal lines 33 and 34 of the trunk cable 3. The main controller 9 sends a control signal to the brake controller 8 based on the rotation speed of the wheel 11 obtained according to the detection signal of the wheel speed sensor 7. The control of the braking force performed by the main controller 9 includes anti-lock control for suppressing the locking of the wheel 11. In addition, the brake controller 8 can also have a part of the control function of the braking force. In this case, the detection signal of the wheel speed sensor 7 is also input to the control circuit 82 of the brake controller 8.

[0042] One end portion of the resin tube 5 on the first connector 21 side is covered by the molded body 6 together with a portion of the first connector 21. In addition, the molded body 6 covers a portion of the sheath 35 of the trunk cable 3 on the first connector 21 side. Figure 3 In FIG. 6 , the first to fourth signal lines 31 to 34 and the sheath 35 of the trunk cable 3 , the fifth and sixth signal lines 41 and 42 of the branch cable 4 , and the resin tube 5 in the interior of the molded body 6 are indicated by dotted lines.

[0043] When manufacturing the wiring harness 1, the first connector 21, the trunk cable 3, the branch cable 4, and the resin tube 5 are arranged in a mold for forming the molded body 6, and molten resin is injected into the cavity of the mold. When the molten resin is cooled and solidified, it becomes the molded body 6. In addition, before forming the molded body 6, the first to sixth signal lines 31 to 34, 41, 42 are preliminarily connected to the first to sixth terminals 211 to 216 of the first connector 21, and the first to sixth terminals 211 to 216 are held in the connector housing 210. In addition, in order to prevent the molten resin from entering the interior of the resin tube 5, the end of the resin tube 5 on the side of the first connector 21 is closed by a cap-shaped closing member, for example.

[0044] The mold 60 for forming the molded body 6 is composed of an upper mold 601 and a lower mold 602 that are split into two halves. When forming the molded body 6, the upper mold 601 and the lower mold 602 hold the sheath 35 and the resin tube 5 of the trunk cable 3 from the upper and lower sides. Therefore, the upper mold 601 and the lower mold 602 do not contact the first to sixth signal lines 31 to 34, 41, 42, thereby preventing the first to sixth signal lines 31 to 34, 41, 42 from contacting the mold 60 and being damaged. In the molded body 6, the trunk cable 3 and the branch cable 4 are arranged so that the straight line connecting the center of the sheath 35 and the center of the resin tube 5 is approximately parallel to the long side ( Figure 4 (c) The edges in the up-down direction.

[0045] The molded body 6 is made of, for example, a polyurethane resin. In the first connector 21, a portion of the connector housing 210 covered by the molded body 6 is fused to the molded body 6 by the heat of the molten resin when the molded body 6 is formed. In the case where the molded body 6 is made of a polyurethane resin, in order to improve the fusion property with the connector housing 210, it is desirable to use a polyurethane resin which is the same resin as the molded body 6, or a polyamide which is a resin having high fusion property with the polyurethane resin as the material of the connector housing 210. In addition, a concave-convex shape having an anchoring effect may be provided on the connector housing 210 and the molded body 6 so that the molded body 6 does not fall off from the connector housing 210.

[0046] The resin tube 5 is fused to the molded body 6 by the heat of the molten resin when the molded body 6 is formed. In addition, the sheath 35 of the trunk cable 3 is also fused to the molded body 6. In order to reliably perform these fusions, it is desirable that the molded body 6, the resin tube 5, and the sheath 35 of the trunk cable 3 are composed of the same resin. In the present embodiment, the molded body 6, the resin tube 5, and the sheath 35 of the trunk cable 3 are composed of polyurethane resin.

[0047] like Figure 4As shown in (c), the resin tube 5 and the sheath 35 are separated in the molded body 6. As a result, the resin constituting the molded body 6 is also interposed between the resin tube 5 and the sheath 35, and the fixation of the resin tube 5 and the sheath 35 to the molded body 6 is strengthened. In addition, the molten resin when the molded body 6 is formed also enters between the resin tube 5 and the sheath 35, so that the weldability of the molded body 6, the resin tube 5 and the sheath 35 can be improved.

[0048] In the molded body 6, the resin tube 5 is separated from the sheath 35 by a distance D 1 The distance D between the resin tube 5 and the sheath 35 in the molded body 6 is 1.0 mm or more and 10.0 mm or less. Considering the strength of a portion of the mold 60 interposed between the resin tube 5 and the sheath 35 when the molded body 6 is formed, and considering the suppression of the size increase of the molded body 6, the distance D between the resin tube 5 and the sheath 35 in the molded body 6 is 1 More preferably, it is 2.0 mm or more and 8.0 mm or less.

[0049] like Figure 4 As shown in (c), in this embodiment, the shortest distance D from the outer peripheral surface 35a of the outer sheath 35 to the outer peripheral surface 6a of the molded body 6 is 2 The distance D between the resin tube 5 and the sheath 35 is 1 In addition, similarly Figure 4 As shown in (c), in this embodiment, the shortest distance D from the outer peripheral surface 5a of the resin tube 5 to the outer peripheral surface 6a of the molded body 6 is 3 The distance D between the resin tube 5 and the sheath 35 is 1 long.

[0050] The sheath 35 of the trunk cable 3 is thicker than the resin tube 5 and has a larger heat capacity. Therefore, compared with the resin tube 5, the surface is not easily melted by the heat of the molten resin and is not easily welded to the molded body 6. Figure 3 As shown, the length L of the portion of the sheath 35 covered by the molded body 6 is 1 The length L of the resin tube 5 of the portion covered by the molded body 6 is greater than 2 The sheath 35 is long, so that it is easy to weld to the molded body 6.

[0051] Furthermore, the connector housing 210, the resin tube 5, and the sheath 35 of the trunk cable 3 do not need to be welded to the molded body 6, and they only need to be closely attached to the molded body 6 so as not to be easily detached. However, if the connector housing 210, the resin tube 5, and the sheath 35 of the trunk cable 3 are welded to the molded body 6 to form an integrated body, it is possible to suppress the infiltration of moisture from the minute gaps therebetween, thereby achieving high waterproofness.

[0052] (Effects of the First Embodiment)

[0053] According to the first embodiment described above, the end of the resin tube 5 on the first connector 21 side is covered by the molded body 6 together with a part of the first connector 21, so that the positional displacement of the resin tube 5 relative to the first connector 21 can be suppressed, and the branch cable 4 can be appropriately protected by the resin tube 5. Thus, damage to the branch cable 4 due to cracking or the like can be suppressed. In addition, in this embodiment, since the connector housing 210, the resin tube 5, and the sheath 35 of the trunk cable 3 are welded to the molded body 6, it is possible to suppress the infiltration of moisture into the interior of the molded body 6, and the waterproofness of the molded body 6 can be improved.

[0054] (Modification of the wiring structure of the trunk cable and the branch cable)

[0055] Figure 6 2 is a structural diagram showing a modified example of the wiring structure of the trunk cable 3 and the branch cable 4. Figure 6 In, with Figure 2 Similarly, the resin tube 5 is virtually indicated by a two-dot chain line, and the interior of the resin tube 5 is indicated by a solid line. In the first embodiment described above, the fifth and sixth signal lines 41 and 42 of the branch cable 4 are electrically connected to the third and fourth signal lines 33 and 34 of the trunk cable 3. Figure 6 In the modified example shown, the third and fourth signal lines 33 and 34 of the trunk cable 3 led out from the sheath 35 inside the molded body 6 are introduced into the resin tube 5 without passing through the first connector 21 and the brake controller 8, and constitute the branch cable 4. That is, in the first embodiment described above, the branch cable 4 is separate from the trunk cable 3, but in this modified example, the branch cable 4 is a part of the trunk cable 3. According to this structure, the same effect as the first embodiment can be obtained.

[0056] (Modification of the Structure Between the Resin Tube and the Third Connector)

[0057] Figure 7 The present invention is a structural diagram showing a modified example in which a heat shrink tube 500 for preventing moisture and the like from entering the resin tube 5 is arranged between the end portion 51 of the resin tube 5 on the third connector 23 side and the third connector. The heat shrink tube 500 is a hollow tubular body made of a resin such as polyolefin that has a property of shrinking when heated, and covers the front end portion 51 of the resin tube 5 together with the signal lines 41 and 42 led out from the resin tube 5 to the third connector 23 side.

[0058] like Figure 7As shown, the length L of the heat shrink tube 500 covering the resin tube 5 may be longer than the distance D between the end of the heat shrink tube 500 on the third connector 23 side and the third connector 23. Thus, for example, even if the heat shrink tube 500 is subjected to more heat than expected and shrinks in the longitudinal direction while being mounted on the vehicle 1, it is possible to prevent the heat shrink tube 500 from falling off the resin tube 5.

[0059] That is, if the heat shrink tube 500 covers the resin tube 5 for a short length, the heat shrink tube 500 may fall off the resin tube 5 when the heat shrink tube 500 shrinks. However, since the heat shrink tube 500 covers the resin tube 5 over a length longer than the distance D, even if the heat shrink tube 500 shrinks significantly when mounted on the vehicle 1, it is possible to prevent the heat shrink tube 500 from falling off the resin tube 5 and causing a gap. In addition, the movement of the heat shrink tube 500 as a whole in the direction of separation from the resin tube 5 is restricted by the third connector 23.

[0060] In addition, it is desirable to use a tube with adhesive having a hot melt adhesive on the inner circumference as the heat shrink tube 500. By using a tube with adhesive as the heat shrink tube 500, it is possible to suppress the positional displacement of the heat shrink tube 500 relative to the resin tube 5 and the generation of gaps between the heat shrink tube 500 and the resin tube 5 and the signal lines 41 and 42.

[0061] [Second embodiment]

[0062] Next, refer to Figure 8 A second embodiment of the present invention will be described. Figure 8 (a) is a configuration diagram of a wire harness 1A according to a second embodiment. Figure 8 (b) Yes Figure 8 (a) is a cross-sectional view of the DD line.

[0063] The wiring harness 1A includes a branch cable 4A in which fifth and sixth signal lines 41 and 42 are covered with a sheath 43. Figure 8 In (a) and (b), the same components as those described in the first embodiment are denoted by the same reference numerals as those used in the first embodiment, and duplicate descriptions are omitted.

[0064] In the first embodiment, the case where the resin tube 5 is used as the protective member for protecting the fifth and sixth signal lines 41 and 42 of the branch cable 4 has been described. In the second embodiment, the sheath 43 formed around the fifth and sixth signal lines 41 and 42 by solid extrusion is used as the protective member for protecting the fifth and sixth signal lines 41 and 42 of the branch cable 4A. The sheath 43 is made of, for example, polyurethane resin, and is solidly formed around the fifth and sixth signal lines 41 and 42 without a gap by solid extrusion, and covers the fifth and sixth signal lines 41 and 42.

[0065] The fifth and sixth signal lines 41 and 42 are led out from the sheath 43 at both ends of the branch cable 4A. At the end on the first connector 21 side, the fifth and sixth signal lines 41 and 42 led out from the sheath 43 are connected to the terminals of the first connector 21 as in the first embodiment. At the end on the third connector 23 side, the fifth and sixth signal lines 41 and 42 led out from the sheath 43 are connected to the terminals of the third connector 23.

[0066] In the sheath 43 of the branch cable 4A, a portion of the first connector 21 side is covered by the molded body 6 together with a portion of the first connector 21 and an end portion of the sheath 35 of the trunk cable 3, and is fused to the molded body 6. Thus, according to the second embodiment, the same effects as those of the first embodiment can be obtained.

[0067] [Third Embodiment]

[0068] Next, refer to Fig. 9 A third embodiment of the present invention will be described. Fig. 9 (a) is a configuration diagram of a wire harness 1B according to a third embodiment. Fig. 9 (b) is a cross-sectional view of the branch cable 4A and the sensor unit 70 in the wiring harness 1B. Fig. 9 In (a) and (b), the same components as those described in the first and second embodiments are denoted by the same reference numerals as those used in the first and second embodiments, and duplicate descriptions are omitted.

[0069] The wiring harness 1B of the third embodiment has a branch cable 4A having the same structure as that of the second embodiment, but is different from the wiring harness 1A of the second embodiment in that a sensor unit 70 is provided at the front end of the branch cable 4A. The sensor unit 70 has a sensor element 71 for detecting a physical quantity and a sealing member 72 for sealing the sensor element 71. In this embodiment, the sensor element 71 is a magnetic field detection element for detecting the strength of a magnetic field. However, the sensor element 71 may also detect other physical quantities.

[0070] The sensor element 71 has an element body 710 that converts a physical quantity into an electrical signal, and first and second terminals 711 and 712. The central conductor 411 of the fifth signal line 41 is electrically connected to the first terminal 711 of the sensor element 71, and the central conductor 421 of the sixth signal line 42 is electrically connected to the second terminal 712 of the sensor element 71. The central conductor 411 of the fifth signal line 41 and the first terminal 711 of the sensor element 71, and the central conductor 421 of the sixth signal line 42 and the second terminal 712 of the sensor element 71 can be directly connected by, for example, solder, or can be connected via a lead wire or a relay terminal. The sensor unit 70 is mounted on the outer ring 141 of the hub unit 14 in the same manner as the wheel speed sensor 7 of the first embodiment, and detects the rotation speed of the hub ring 142 relative to the outer ring 141 as the rotation speed of the wheel 11.

[0071] The sheath 43 of the branch cable 4A is integrally formed with the sealing member 72 of the sensor unit 70. The sheath 43 and the sealing member 72 are made of, for example, polyurethane resin. When manufacturing the wiring harness 1B, the fifth and sixth signal lines 41, 42 and the sensor element 71 are arranged in a mold in a pre-connected state, and molten resin is injected into the cavity of the mold. When the molten resin is cooled and solidified, the branch cable 4A in which the sensor unit 70 is integrally provided at the front end is obtained. Then, the branch cable 4A is arranged in a mold for forming the molded body 6 together with the first connector 21 and the trunk cable 3, and the molded body 6 is formed.

[0072] According to the third embodiment, the same effects as those of the first embodiment can be obtained. In addition, since the sheath 43 of the branch cable 4A and the sealing member 72 of the sensor unit 70 are integrally formed, it is possible to reliably prevent moisture from entering the branch cable 4A.

[0073] (Summary of Implementation Methods)

[0074] Next, the technical ideas grasped by the first to third embodiments and the modified examples described above are described by citing the symbols in the first to third embodiments and the modified examples. However, each symbol in the following description does not limit the constituent elements in the scope of the technical solution to the components specifically shown in the embodiments and the modified examples.

[0075] [1] A wiring harness 1, 1A, 1B, comprising: a first and a second cable (a trunk cable 3 and a branch cable 4), each having a plurality of electric wires; a side connector (a first connector 21) provided at one end of the first cable 3; and a protective component (a resin tube 5 / sheath 43) covering at least a portion of the plurality of electric wires 41, 43 / 33, 34 of the second cable 4, wherein one end of the protective component 5 / 43 is covered by a molded body 6 together with the one side connector 21.

[0076] [2] The wire harness 1 according to the above [1], wherein the protective member is a cylindrical body (resin tube 5 ) that accommodates the plurality of electric wires 41 , 42 / 33 , 34 of the second cable 4 .

[0077] [3] The wire harness 1A or 1B according to [1] above, wherein the protective member is a solid sheath 43 covering the plurality of electric wires 41 and 42 of the second cable 4 .

[0078] [4] The wire harness 1B according to [3] above, wherein the plurality of electric wires 41 and 42 of the second cable 4 are connected to a sensor element 71 that detects a physical quantity, and the sheath 43 is integrally formed with a sealing member 72 that seals the sensor element 71 .

[0079] [5] The wire harness 1 , 1A, 1B according to any one of [1] to [4] above, wherein the protection member 5 , 43 is welded to the molded body 6 .

[0080] [6] According to the wiring harness 1, 1A, 1B described in [5] above, the one side connector 21 has a plurality of terminals 211 to 216 and a connector housing 210 for holding the plurality of terminals 211 to 216, and a portion of the connector housing 210 covered by the molded body 6 is welded to the molded body 6.

[0081] [7] According to the wiring harness 1, 1A, 1B described in [1] above, wherein the first cable 3 is formed by covering a plurality of wires (first to fourth signal wires 31 to 34) with a sheath 35, and the molded body 6 covers a portion of the sheath 35 of the first cable 3 on the side of the connector 21.

[0082] [8] The wiring harness 1, 1A according to the above-mentioned [1] comprises: another side connector (second connector 22), which is arranged at the other end of the first cable 3, wherein the installation object of the one side connector 21 is a wheel side control device (brake controller 8) configured on the wheel side of the vehicle 100, and the installation object of the other side connector 22 is a body side control device (main controller 9) configured on the body side of the vehicle 100, and the multiple wires 41, 43 / 33, 34 of the second cable 4 are connected to the wheel speed sensor 7 for detecting the rotation speed of the wheel 11.

[0083] The first to third embodiments and variations of the present invention are described above, but these embodiments and variations do not limit the invention involved in the scope of the technical solution. In addition, it should be noted that the combination of features described in the embodiments and variations is not necessarily necessary for all solutions to the problems of the invention.

[0084] In addition, the use of the wire harness 1 is not limited to the use described in the above embodiment, for example, the wire harness of the present invention can be used to connect other devices, sensors, etc. of the vehicle. In addition, the wire harness of the present invention is not limited to vehicles, for example, it can also be used in industrial machinery and robots.

Claims

1. A wiring harness, characterized in that: have: A first cable and a second cable, each having a plurality of wires; a side connector disposed at one end of the first cable; and a protective member covering at least a portion of the plurality of wires of the second cable, One end portion of the protection member is covered by a molded body together with the one side connector.

2. The wire harness according to claim 1, characterized in that: The protection member is a cylindrical body that accommodates the plurality of electric wires of the second cable.

3. The wire harness according to claim 1, characterized in that: The protective member is a solid sheath covering the plurality of electric wires of the second cable.

4. The wire harness according to claim 3, characterized in that: The plurality of wires of the second cable are connected to a sensor element that detects a physical quantity. The sheath is formed integrally with a sealing member that seals the sensor element.

5. The wire harness according to any one of claims 1 to 4, characterized in that: The protection member is welded to the molded body.

6. The wire harness according to claim 5, characterized in that: The one-side connector has a plurality of terminals and a connector housing for holding the plurality of terminals. A portion of the connector housing covered by the molded body is welded to the molded body.

7. The wire harness according to claim 1, characterized in that: The first cable covers the plurality of wires with a sheath, The molded body covers a portion of the one connector side of the jacket of the first cable.

8. The wire harness according to claim 1, characterized in that: A second connector is provided at the other end of the first cable, The one side connector is installed on a wheel side control device arranged on the wheel side of the vehicle. The other side connector is installed on a body side control device arranged on the body side of the vehicle. The plurality of electric wires of the second cable are connected to a wheel speed sensor that detects a rotation speed of a wheel.

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