Wire harness manufacturing method

Abstract

The present invention provides a method for manufacturing a wire harness that can increase the fixing strength of corrugated tubes using fasteners while suppressing cost increases. [Solution] The wire harness 2 comprises a corrugated tube having annular recesses 51 and protrusions 52 alternately arranged along its longitudinal direction, and a fastener 7 for fixing the corrugated tube to an object to be attached. The fastener 7 has a metal plate 70 that integrally has an attachment portion 71 to be attached to the object to be attached, and a gripping portion 72 that curves and extends to surround the outer circumference of the corrugated tube and tightens and grips the corrugated tube. One end of the gripping portion 72 in the direction of extension is continuous with the attachment portion 71, and a gap 700 is formed between the other end in the direction of extension and the attachment portion 71. With the cable inserted through the corrugated tube, the metal plate 70 is bent to form the gripping portion 72 in a curved shape.

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a wire harness.

Background Art

[0002] In recent years, the electrification of each part of a vehicle has advanced, and many wire harnesses are being used in vehicles. The wire harness described in Patent Document 1 is for electrically connecting a plurality of in-vehicle devices (for example, an inverter and a battery), and includes a corrugated tube having a bellows structure with an annular concave portion and a convex portion, a plurality of electric wires inserted through the corrugated tube, and a plurality of fixing tools made of resin or metal for fixing the corrugated tube to a support.

[0003] The fixing tool has a first side portion and a second side portion connected by a hinge portion, and the corrugated tube is inserted through a tube passing hole formed between the first side portion and the second side portion. A convex portion that fits into the concave portion of the corrugated tube is formed on the inner surface of the tube passing hole. A part of each of the first side portion and the second side portion constitutes a lock portion that maintains the first side portion and the second side portion in a combined state by engaging with each other. Further, fixing holes through which stud bolts for fixing the fixing tool to the support are passed are formed in the first side portion and the second side portion.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0057] -

[0064] of the specification)

Summary of the Invention

Problems to be Solved by the Invention

[0005] Some vehicle wire harnesses have a portion of their length suspended in the air and swinging. For example, in a wire harness connecting a vehicle's electric brake and control device, one end of the wire harness is fixed under the vehicle's spring, and a portion of the wire harness is suspended in the air. When using such a wire harness as described in Patent Document 1, the fasteners that secure both ends of the portion suspended in the air to the support require high fixing strength so that the corrugated tube does not move relative to the fasteners even when the wire harness swings.

[0006] In this case, if the fasteners are made of resin, the strength of the fasteners themselves is weak, and there is a risk of deformation due to the axial force of the stud bolts, for example, so it is desirable to use metal fasteners. However, if the fasteners are made of metal, the process of forming the first and second side parts, and the assembly process of connecting the first and second side parts with the hinge part will require many steps, leading to an increase in costs.

[0007] Therefore, the present invention aims to provide a method for manufacturing a wire harness that can increase the fixing strength of a corrugated tube using a fastener while suppressing an increase in cost. [Means for solving the problem]

[0008] The present invention aims to solve the above problems and provides a method for manufacturing a wire harness comprising: a corrugated tube having annular recesses and protrusions alternately arranged along its longitudinal direction; a cable inserted through the corrugated tube; and a fastener for fixing the corrugated tube to an object to be attached, wherein the fastener has a metal plate integrally having an attachment portion to be attached to the object to be attached, and a gripping portion that curves and extends to surround the outer circumference of the corrugated tube and tightens and grips the corrugated tube, and one end of the gripping portion in the direction of extension is continuous with the attachment portion, and a gap is formed between the other end in the direction of extension and the attachment portion, wherein the present invention provides a method for manufacturing a wire harness in which the metal plate is bent to form the gripping portion in a curved shape while the cable is inserted through the corrugated tube.

[0009] [Effects of the Invention]

[0010] According to the wire harness manufacturing method of the present invention, it is possible to increase the fixing strength of the corrugated tube by the fastener while suppressing an increase in cost. [Brief explanation of the drawing]

[0011] [Figure 1] (a) is an external view showing a vehicle to which a wire harness according to an embodiment of the present invention is attached. (b) is a configuration diagram showing one of the multiple wheels of a vehicle and its surrounding area. [Figure 2] This is a perspective view illustrating the configuration of a wire harness. [Figure 3] (a) is a cross-sectional view along line AA in Figure 2. (b) is a cross-sectional view along line BB in Figure 2. [Figure 4] This is a cross-sectional view of the wire harness along the longitudinal direction of the CC line in Figure 2. [Figure 5] (a) is a perspective view showing the fastener. (b) is a perspective view showing the metal plate before the gripping portion is formed into a curved shape by bending. [Figure 6](a) is a perspective view showing a fastener according to the second embodiment. (b) is a perspective view showing a metal plate before the gripping portion is formed into a curved shape by bending. [Figure 7] (a) and (b) are cross-sectional views showing a corrugated tube, power line, signal line, and sheath, held in the gripping part of a fastener. [Figure 8] (a) is a perspective view showing a fastener according to the third embodiment. (b) is a perspective view showing a metal plate together with an intervening member before the gripping portion is formed into a curved shape by bending. [Figure 9] (a) and (b) are cross-sectional views showing the fasteners, corrugated tubing, power lines, signal lines, and sheath. [Modes for carrying out the invention]

[0012] [Embodiment] (Vehicle configuration) Figure 1(a) is an external view showing a vehicle 1 to which a wire harness 2 according to an embodiment of the present invention is attached. Figure 1(b) is a configuration diagram showing one of the multiple wheels 10 of the vehicle 1 and its surrounding area.

[0013] The wheel 10 is supported by a suspension system 12 so as to be movable in the vertical direction relative to the vehicle body 11. The suspension system 12 consists of an upper arm 121, a lower arm 122, a shock absorber 123, and a suspension spring 124. One end of the upper arm 121 and the lower arm 122 are connected to a knuckle 13, and the other end is connected to the vehicle body 11. The upper arm 121 is connected together with the shock absorber 123 to the upper mounting portion 131 of the knuckle 13, and the lower arm 122 is connected to the lower mounting portion 132 of the knuckle 13. The suspension spring 124 is arranged coaxially on the outer circumference of the shock absorber 123 and expands and contracts in accordance with the vertical movement of the vehicle body 11 relative to the road surface.

[0014] The knuckle 13 is equipped with a hub unit 14, an electric brake device 15, and a rotational speed sensor 16. Hereinafter, the side closer to the wheel 10 than the suspension spring 124 is referred to as "below the spring", and the side closer to the vehicle body 11 is referred to as "above the spring". Below the spring, the wheel 10, the suspension device 12, the knuckle 13, the hub unit 14, and the electric brake device 15 are included. Above the spring, the vehicle body 11 and the tire house 111 fixed to the vehicle body 11 so as to surround the wheel 10 are included.

[0015] The hub unit 14 has an outer ring 141 fixed to the knuckle 13 by a plurality of bolts 140 and a hub ring 142 rotatably supported with respect to the outer ring 141. The hub ring 142 is provided with a wheel mounting flange 142a, and the wheel 10 and the brake rotor 17 are attached to the wheel mounting flange 142a by a plurality of hub bolts 143. The electric brake device 15 presses a brake pad 151 against the brake rotor 17 to generate a frictional force and brakes the wheel 10. The rotational speed sensor 16 is fixed to the outer ring 141 and detects the magnetic field of a magnetic encoder that rotates integrally with the hub ring 142.

[0016] The vehicle 1 is equipped with a control device 100 that controls the electric brake device 15, and the control device 100 is electrically connected to the electric brake device 15 and the rotational speed sensor 16 by a wire harness 2. The wire harness 2 includes a cable portion 20 having a pair of power lines 31, 32, a signal line 4, and a corrugated tube 5, a terminal member 6 provided at one end of the corrugated tube 5, and a plurality of fixing tools 7 for attaching the cable portion 20 to the vehicle 1.

[0017] The power lines 31, 32 are connected to the electric brake device 15 and supply power for operating the electric brake device 15 from the control device 100 to the electric brake device 15. The signal line 4 is connected to the rotational speed sensor 16 and sends a signal indicating the rotational speed of the wheel 10 from the rotational speed sensor 16 to the control device 100. The power lines 31, 32 and the signal line 4 are one aspect of the electric wire of the present invention.

[0018] The power lines 31, 32 and the signal line 4 are inserted into the corrugated tube 5. The corrugated tube 5 protects the power lines 31, 32 and the signal line 4 from flying objects such as flying stones and water droplets. The corrugated tube 5 is made of a synthetic resin such as polyamide, polypropylene, polybutylene terephthalate, etc., and has flexibility to flexibly follow the vertical movement of the wheel 10 with respect to the vehicle body 11.

[0019] The terminal member 6 is, for example, a molded resin member, closes one end of the corrugated tube 5, and holds the power lines 31, 32 and the signal line 4 led out from the corrugated tube 5. Note that the gap between the terminal member 6 and the corrugated tube 5 may be blocked by a water-stop material such as waterproof tape so that moisture does not enter the corrugated tube 5.

[0020] At least one of the plurality of fixtures 7 is attached on a spring. Also, at least one of the other plurality of fixtures 7 is attached under a spring. FIG. 1(b) shows two fixtures 7. One of these fixtures 7 is fixed to the upper attachment portion 131 of the knuckle 13 by a bolt 18, and the other fixture 7 is fixed to the tire house 111 by a bolt 18.

[0021] The cable portion 20 is strung in the air between one fixture 7 and the other fixture 7. In other words, fixtures 7 are provided at both ends of the portion 21 strung in the air in the wire harness 2. The corrugated tube 5 covers at least the cable portion 20 between these two fixtures 7.

[0022] (Configuration of the wire harness) FIG. 2 is a perspective view shown to explain the configuration of the wire harness 2. FIG. 3(a) is a cross-sectional view taken along line A-A of FIG. 2. FIG. 3(b) is a cross-sectional view taken along line B-B of FIG. 2. FIG. 4 is a cross-sectional view taken along line C-C of FIG. 2 along the longitudinal direction of the wire harness 2.

[0023] The power lines 31, 32 and the signal line 4 are covered together by a sheath 33. The sheath 33 is a solid structure formed by solid extrusion of a thermoplastic resin such as urethane, and a portion of the resin material of the sheath 33 is embedded between each of the power lines 31, 32 and the signal line 4. The outer edge of the sheath 33 in a cross section perpendicular to the longitudinal direction of the wire harness 2 is circular.

[0024] Power lines 31, 32 are made of a core wire 311, which is made by twisting together multiple conductor strands 310, 320. The wire is an insulated wire having a core wire 321 and insulating coatings 312 and 322 that cover the core wires 311 and 321. The signal wire 4 has a pair of differential signal wires 41 and 42 and an internal sheath 43 that covers the pair of differential signal wires 41 and 42 together. The differential signal wires 41 and 42 are insulated wires formed to be smaller in diameter than the power wires 31 and 32, and have core wires 411 and 421 made by twisting together a plurality of conductor strands 410 and 420, and insulating coatings 412 and 422 that cover the core wires 411 and 421. The internal sheath 43 is a solid structure formed by solid extrusion of a thermoplastic resin such as urethane.

[0025] The conductor strands 310, 320, 410, and 420 are made of a highly conductive metal such as a copper alloy or an aluminum alloy. The insulating coatings 312, 322, 412, and 422 are made of a thermoplastic resin, more specifically, polyamide, polypropylene, polyethylene, polyethylene terephthalate, etc.

[0026] As shown in Figures 2 and 4, the corrugated tube 5 has a bellows structure in which annular recesses 51 and annular protrusions 52 are alternately provided along the longitudinal direction, and the inner and outer diameters of the recesses 51 are smaller than the inner and outer diameters of the protrusions 52. The inner diameter of the recesses 51 is formed to be slightly larger than the outer diameter of the sheath 33. In this embodiment, the case in which the corrugated tube 5 is tubular and does not have slit-like cuts is described, but axial cuts may be made in the corrugated tube 5.

[0027] The fastener 7 has a metal plate 70 that integrally includes a mounting portion 71 that is attached to the object to be mounted and a gripping portion 72 that tightens and grips the corrugated tube 5. In this embodiment, the fastener 7 is made of a single metal plate 70. The mounting portion 71 is a flat plate with a mounting hole 710 formed through it in the thickness direction. The gripping portion 72 extends in a curved manner so as to surround the outer circumference of the corrugated tube 5. In the example shown in Figure 1(b), the object to which one fastener 7 is mounted is the knuckle 13, and the object to which the other fastener 7 is mounted is the wheel well 111. The mounting portion 71 is attached to these objects by a bolt 18 that is inserted through the mounting hole 710.

[0028] Figure 5(a) is a perspective view showing the fastener 7. Figure 5(b) is a perspective view showing the metal plate 70 before the gripping portion 72 is formed in a curved shape by bending. The metal plate 70 before the gripping portion 72 is formed is a flat rectangular shape overall. The gripping portion 72 has one end 72a in the extending direction that is continuous with the mounting portion 71, and a gap 700 is formed between the other end 72b in the extending direction and the mounting portion 71. In this embodiment, as shown in Figures 3(a) and (b), the gripping portion 72 surrounds the outer circumference of the corrugated tube 5 over a range of approximately 270°, but it is not limited to this, and it is sufficient if the gripping portion 72 surrounds the corrugated tube 5 in the circumferential direction over a range longer than half a circumference (180°).

[0029] The gripping portion 72 has a crimping portion 721 that contacts the outer circumferential surface 51a of the recess 51 of the corrugated tube 5 and tightens the recess 51. The crimping portion 721 is linear in shape and extends along the outer circumferential surface 51a of the recess 51. In this embodiment, a plurality of grooves 722 are formed in the metal plate 70, and the crimping portions 721 are provided between these grooves 722. In the examples shown in Figures 4 and 5(a) and (b), four crimping portions 721 are provided between five grooves formed in the metal plate 70, but the number of crimping portions 721 on the gripping portion 72 is not limited to this, and may be, for example, one to three, or five or more.

[0030] The thickness of the metal plate 70 in the portion where the crimping portion 721 is provided is the same as the thickness of the metal plate 70 in the mounting portion 71, and the thickness of the portion where the groove 722 is formed is thinner than the thickness of the metal plate 70 in the mounting portion 71. The metal plate 70 is made of steel, such as stainless steel, but is not limited to this, and may also be made of materials such as aluminum alloy or brass.

[0031] The crimping portion 721 has a contact surface 721a that abuts against the outer circumferential surface 51a of the recess 51 of the corrugated tube 5, and crimps the recess 51 toward the sheath 33. The inner circumferential surface 51b of the recess 51 of the corrugated tube 5 in the portion gripped by the gripping portion 72 is in contact with the outer circumferential surface 33a of the sheath 33. The sheath 33 is pressed against the crimping portion 721 via the recess 51 of the corrugated tube 5. In Figure 3(a), the contact surface 721a of the crimping portion 721 is shown to be in contact with the outer circumferential surface 51a of the recess 51 over the entire length of the crimping portion 721, but it is sufficient for the contact surface 721a of the crimping portion 721 to be in contact with the outer circumferential surface 51a of the recess 51 in at least a portion of the length of the crimping portion 721.

[0032] During the manufacturing of the wire harness 2, the power lines 31, 32 and signal lines 4, covered by the sheath 33, are inserted into the corrugated tube 5, and the metal plate 70 is bent to form a curved gripping portion 72. This bending is performed so that the other end 72b of the gripping portion 72 does not come into contact with the mounting portion 71, and a gap 700 is formed between the other end 72b of the gripping portion 72 and the mounting portion 71. As a result, the tightening force of the gripping portion 72 is reliably transmitted to the recess 51 of the corrugated tube 5, and the gripping portion 72 can grip the corrugated tube 5.

[0033] In this embodiment, the depth of the groove 722 in the gripping portion 72 is set so that the bottom surface 722a of the groove 722 in the gripping portion 72 does not come into contact with the outer circumferential surface 52a of the protrusion 52 of the corrugated tube 5, thereby preventing the protrusion 52 of the corrugated tube 5 from being crushed by the clamping force of the gripping portion 72. However, the bottom surface 722a of the groove 722 may come into contact with the outer circumferential surface 52a of the protrusion 52 to the extent that the protrusion 52 is not significantly crushed.

[0034] (Operation and effects of the first embodiment) According to the first embodiment described above, the gripping portion 72 curves to surround the outer circumference of the corrugated tube 5 and grips the corrugated tube 5 by tightening it, thereby increasing the fixing strength of the corrugated tube 5 by the fixing device 7. Furthermore, since the fixing device 7 has a simple structure in which the mounting portion 71 and the gripping portion 72 are integrated, an increase in cost can be suppressed. In other words, according to the first embodiment, it is possible to increase the fixing strength of the corrugated tube 5 by the fixing device 7 while suppressing an increase in cost.

[0035] [Second Embodiment] Next, a second embodiment of the present invention will be described with reference to Figures 6 and 7.

[0036] Figure 6(a) is a perspective view showing a fixing device 8 according to the second embodiment. The fixing device 8, like the fixing device 7 according to the first embodiment, consists of a single metal plate 80 and integrally has a mounting portion 81 and a gripping portion 82, but the configuration of the gripping portion 82 is different from that of the first embodiment.

[0037] Figure 6(b) is a perspective view showing the metal plate 80 before the gripping portion 82 is formed into a curved shape by bending. Figures 7(a) and (b) are cross-sectional views showing the corrugated tube 5 gripped by the gripping portion 82 of the fixing device 8, together with the power lines 31, 32, signal line 4, and sheath 33 inside it. Figure 7(a) shows a cross-section perpendicular to the longitudinal direction of the corrugated tube 5, and Figure 7(b) shows a cross-section along the longitudinal direction of the corrugated tube 5.

[0038] The configuration of the corrugated tube 5, power lines 31, 32, signal line 4, and sheath 33 is the same as in the first embodiment. The fixing device 8, together with the corrugated tube 5, power lines 31, 32, signal line 4, and sheath 33, constitutes the wire harness 2A. The mounting portion 81 has a mounting hole 810 for attachment to the object to be attached. The gripping portion 82 extends in a curved manner so as to surround the outer circumference of the corrugated tube 5.

[0039] In the first embodiment, a case was described in which a thick-walled portion and a thin-walled portion are formed in the metal plate 70, and the thick-walled portion becomes the crimping portion 721 of the gripping portion 72. In the second embodiment, however, a plurality of notches 820 are formed in the gripping portion 82, and a plurality of crimping portions 821 are provided so as to sandwich these plurality of notches 820. The plurality of crimping portions 821 are linear in shape, extending from the mounting portion 81 along the outer circumferential surface 51a of the recess 51 of the corrugated tube 5, and one end 82a in the direction of extension is continuous with the mounting portion 81. A gap 800 is formed between the other end 82b of the plurality of crimping portions 821 and the mounting portion 81.

[0040] Multiple crimping portions 821 are positioned between pairs of adjacent protrusions 52 in the longitudinal direction of the corrugated tube 5. The notches 820 penetrate the metal plate 80 in the thickness direction, and the multiple crimping portions 821 are formed in a comb-like shape. Each of the multiple notches 820 accommodates a protrusion 52 of the corrugated tube 5.

[0041] The crimping portion 821 has a contact surface 821a that abuts against the outer circumferential surface 51a of the recess 51 of the corrugated tube 5, and crimps the recess 51 toward the sheath 33. The inner circumferential surface 51b of the recess 51 of the corrugated tube 5 in the portion gripped by the gripping portion 82 is in contact with the outer circumferential surface 33a of the sheath 33.

[0042] During the manufacturing of the wire harness 2A, with the power lines 31 and 32 and signal lines 4, covered by the sheath 33, inserted into the corrugated tube 5, the metal plate 80 is bent to form multiple crimping portions 821 of the gripping portion 82 in a curved shape.

[0043] The second embodiment described above, like the first embodiment, makes it possible to increase the fixing strength of the corrugated tube 5 by the fixing device 8 while suppressing an increase in cost. Furthermore, the wire harness 2A according to the second embodiment, like the wire harness 2 according to the first embodiment, can be routed across the sprung mass and unsprung mass of the vehicle 1. The same applies to the wire harness according to the third embodiment described below.

[0044] [Third Embodiment] Next, a third embodiment of the present invention will be described with reference to Figures 8 and 9.

[0045] Figure 8(a) is a perspective view showing a fixing device 9 according to a third embodiment. The fixing device 9 is composed of a single metal plate 90 having a mounting portion 91 and a gripping portion 92 integrally, and a resin intervening member 93. The mounting portion 91 has a mounting hole 910 formed therein for attachment to the object to be attached. The gripping portion 92 is formed in a curved shape and grips the corrugated tube 5 via the intervening member 93. One end 92a of the gripping portion 92 is continuous with the mounting portion 91, and a gap 900 is formed between the other end 92b of the gripping portion 92 and the mounting portion 91.

[0046] Figure 8(b) is a perspective view showing the metal plate 90 together with the intervening member 93 before the gripping portion 92 is formed into a curved shape by bending. Figures 9(a) and (b) are cross-sectional views showing the fastener 9, corrugated tube 5, power lines 31, 32, signal line 4, and sheath 33. Figure 9(a) shows a cross-section perpendicular to the longitudinal direction of the corrugated tube 5, and Figure 9(b) shows a cross-section along the longitudinal direction of the corrugated tube 5.

[0047] The configuration of the corrugated tube 5, power lines 31, 32, signal line 4, and sheath 33 is the same as in the first embodiment. The fastener 9, together with the corrugated tube 5, power lines 31, 32, signal line 4, and sheath 33, constitutes the wire harness 2B.

[0048] The intervening member 93 is formed in a cylindrical shape and is interposed between the gripping portion 92 and the corrugated tube 5. The intervening member 93 is made of a material softer than the material of the corrugated tube 5, such as urethane rubber or ethylene propylene diene rubber (EPDM). The gripping portion 92 has its inner surface 92c in contact with the outer surface 93a of the intervening member 93, and presses the intervening member 93 toward the corrugated tube 5.

[0049] The intervening member 93 has a slit-shaped cut 930 extending in the axial direction at one location in the circumferential direction. When assembling the wire harness 2B, this cut 930 is widened to elastically deform the intervening member 93, and the corrugated tube 5 is positioned from the cut 930 to the center of the intervening member 93 together with the power lines 31, 32, signal lines 4, and sheath 33.

[0050] The inner circumference of the intervening member 93 has an uneven structure formed in a shape corresponding to the recesses 51 and protrusions 52 of the corrugated tube 5. The protruding parts of this uneven structure contact the outer circumferential surface 51a of the recesses 51 of the corrugated tube 5 and form crimping parts 931 that tighten the recesses 51. In this embodiment, the intervening member 93 has four crimping parts 931. The crimping parts 931 are formed in a linear shape extending along the outer circumferential surface 51a of the recesses 51 of the corrugated tube 5, and an annular groove 932 is formed between two adjacent crimping parts 931.

[0051] The crimping portion 931 has a contact surface 931a that abuts against the outer circumferential surface 51a of the recess 51 of the corrugated tube 5, and crimps the recess 51 toward the sheath 33. The inner circumferential surface 51b of the recess 51 of the corrugated tube 5 in the portion located inside the intervening member 93 is in contact with the outer circumferential surface 33a of the sheath 33.

[0052] During the manufacturing of the wire harness 2B, the corrugated tube 5, which houses the power lines 31 and 32, the signal line 4, and the sheath 33, is positioned inside the intervening member 93 through the slit 930, and the crimped portion 931 of the intervening member 93 is fitted into the recess 51 of the corrugated tube 5. Subsequently, the metal plate 90 is plastically deformed to form a curved gripping portion 92, and the intervening member 93 is pressed toward the corrugated tube 5 by the gripping portion 92.

[0053] Similar to the first embodiment, the third embodiment described above also makes it possible to increase the fixing strength of the corrugated tube 5 by the fixing device 9 while suppressing an increase in costs.

[0054] (Summary of the embodiments) Next, the technical concept understood from the first to third embodiments described above will be described using the reference numerals and other symbols from each embodiment. However, the reference numerals in the following description are not limited to the components in the claims that are specifically shown in the embodiments.

[0055] [1] A corrugated tube (5) having annular recesses (51) and protrusions (52) alternately arranged along its longitudinal direction, electric wires (31, 32, 4) inserted through the corrugated tube (5), and fasteners (7, 8, 9) for fixing the corrugated tube (5) to the mounting object (13, 111), wherein the fasteners (7, 8, 9) have mounting parts (71, 81, 91) that are attached to the mounting object (13, 111), and curved to surround the outer circumference of the corrugated tube (5) A wire harness (2,2A,2B) having a metal plate (70,80,90) integrally with a gripping portion (72,82,92) that extends and tightens and grips the corrugated tube (5), wherein one end (72a,82a,92a) in the direction of extension of the gripping portion (72,82,92) is continuous with the mounting portion (71,81,91), and a gap (700,800,900) is formed between the other end (72b,82b,92b) in the direction of extension and the mounting portion (71,81,91).

[0056] [2] The wire harness (2, 2A, 2B) described in [1] above, wherein the gripping portion (72, 82, 92) has a crimping portion (721, 821, 931) that contacts the outer circumferential surface (51a) of the recess (51) of the corrugated tube (5) and tightens the recess (51).

[0057] [3] The wire harness (2, 2A, 2B) according to [2] above, wherein the crimping portion (721, 821, 931) is linear and extends along the outer peripheral surface (51a) of the recess (51), and the fixing device (7, 8, 9) has a plurality of the crimping portions (721, 821, 931).

[0058] [4] The wire harness (2B) according to [1] above, wherein the fixing device (9) has a resin intervening member (93) interposed between the gripping portion (92) and the corrugated tube (5), and the gripping portion (92) grips the corrugated tube (5) via the intervening member (93).

[0059] [5] The wire harness (2B) described in [4] above, wherein the intervening member (93) has a crimping portion (931) that contacts the outer circumferential surface (51a) of the recess (51) of the corrugated tube (5) and tightens the recess (51).

[0060] [6] The wire harness (2B) according to [5] above, wherein the intervening member (93) is made of a material softer than the material of the corrugated tube (5).

[0061] [7] A wire harness (2, 2A, 2B) as described in [1] above, wherein a plurality of electric wires (31, 32, 4) are inserted through the corrugated tube (5), the plurality of electric wires (31, 32, 4) are collectively covered by a sheath (33), and the inner circumferential surface (51b) of the recess (51) of the corrugated tube (5) in the portion gripped by the gripping portion (72, 82, 92) is in contact with the outer circumferential surface (33a) of the sheath (33).

[0062] [8] A vehicle (1) to which a wire harness (2, 2A, 2B) described in any one of [1] to [7] above is attached, wherein the wire harness (2, 2A, 2B) comprises a plurality of fasteners (7, 8, 9), at least one fastener (7, 8, 9) is mounted on a spring and at least one fastener (7, 8, 9) is mounted unsprung.

[0063] Although embodiments of the present invention have been described above, the embodiments described above do not limit the invention as defined in the claims. Furthermore, it should be noted that not all combinations of features described in the embodiments are necessarily essential for solving the problem of the invention.

[0064] Furthermore, the present invention can be implemented with appropriate modifications without departing from its spirit. For example, in the above embodiment, the case in which wire harnesses 2, 2A, and 2B are routed around the wheel 10, extending both above and below the spring, was described, but it is also possible to use the wire harness of the present invention in other parts of the vehicle 1. For example, the wire harness of the present invention may be used between the electric motor and the inverter, which are the drive source of an electric vehicle, or between the inverter and the high-voltage battery, or it may be used in industrial machinery other than vehicles. [Explanation of Symbols]

[0065] 1...Vehicle 2,2A,2B...Wire harness 31, 32... Power lines (electric wires) 33... Sheath 33a...Outer surface 4...Signal line (electric wire) 5...Corrugated tube 51...Recess 51a…Outer peripheral surface 51b…Inner peripheral surface 52...Protrusion 7,8,9...Fixing device 70, 80, 90... Metal plates 700, 800, 900... Gaps 71, 81, 91... Mounting parts 72, 82, 92... Gripping parts 721, 821, 931... Crimped section 72a, 82a, 92a... One end 72b, 82b, 92b… its end 93… in the material

Claims

1. A corrugated tube having annular recesses and protrusions arranged alternately along its longitudinal direction, The cable inserted through the corrugated tube, The corrugated tube is equipped with a fastener for fixing it to the object to be attached, The fastener has a metal plate that integrally includes a mounting portion to be attached to the object to be attached, and a gripping portion that curves and extends to surround the outer circumference of the corrugated tube and tightens and grips the corrugated tube. The gripping portion is a wire harness manufacturing method wherein one end of the gripping portion in the extending direction is continuous with the mounting portion, and a gap is formed between the other end in the extending direction and the mounting portion. A method for manufacturing a wire harness, comprising bending the metal plate to form the gripping portion in a curved shape while the cable is inserted through the corrugated tube.

2. The cable comprises a plurality of wires and a sheath that covers the plurality of wires together. The sheath is a solid structure formed by solid extrusion of thermoplastic resin. A method for manufacturing a wire harness according to claim 1.

3. It has an internal sheath that covers some of the aforementioned multiple wires together, The internal sheath is a solid structure formed by solid extrusion of thermoplastic resin. A method for manufacturing a wire harness according to claim 2.

4. The gripping portion has a crimping portion that contacts the outer circumferential surface of the recess of the corrugated tube and tightens the recess. A method for manufacturing a wire harness according to claim 1.

5. The fastener has a plurality of crimping portions, Multiple crimping portions are formed in a comb-like shape. A method for manufacturing a wire harness according to claim 4.

6. The fixing device consists of a resin intervening portion between the gripping portion and the corrugated tube. Having material, The gripping portion grips the corrugated tube via the intervening member. A method for manufacturing a wire harness according to claim 1 or 2.

7. The intervening member contacts the outer circumferential surface of the recess of the corrugated tube and tightens the recess. Having a crimping part for attachment, A method for manufacturing a wire harness according to claim 6.

8. The intervening member is made of a material softer than the material of the corrugated tube. A method for manufacturing a wire harness according to claim 7.

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