Wire harness

Abstract

To provide a wire harness capable of suppressing cable vibration.SOLUTION: A wire harness includes a cable, and a bracket which holds the cable. The cable includes: a first portion and a second portion which have an outer sheath; and a third portion which is located between the first and second portions and does not include the outer sheath, and in which at least a part thereof is bent. The bracket includes: a first holding portion which holds the first portion; and a second holding portion which holds the second portion.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] Patent Document 1 discloses a wire harness for a vehicle. The wire harness is routed along a predetermined path. The wire harness includes a cable and a bracket. The bracket holds the cable. The bracket is fixed to a fixed object. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-23053 Summary of the Invention [Problem to be solved by the invention]

[0004] When a wire harness is attached to a vehicle, etc., the cable may vibrate. In one aspect of the present disclosure, it is preferable to provide a wire harness capable of suppressing vibration of the cable. [Means for solving the problem]

[0005] One aspect of the present disclosure is a wire harness including a cable and a bracket that holds the cable. The cable includes a first portion and a second portion that include an outer sheath, and a third portion that is located between the first portion and the second portion, does not include the outer sheath, and is at least partially bent. The bracket includes a first holding portion that holds the first portion, and a second holding portion that holds the second portion.

[0006] In a wire harness according to one aspect of the present disclosure, the bracket holds the cable at both the first holding portion and the second holding portion, which can suppress vibration of the cable compared to a case in which the bracket holds the cable at only one point. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a plan view illustrating a configuration of a wire harness in a first embodiment. [Diagram 2] FIG. 1 is a side view illustrating a configuration of a wire harness in a first embodiment. [Diagram 3] FIG. 2 is a cross-sectional view taken along line III-III in FIG. [Figure 4] 4 is a cross-sectional view taken along line IV-IV in FIG. 1 when the stranded electric wires 7 are stranded in the third portion. [Diagram 5] FIG. 11 is a plan view illustrating a configuration of a wire harness according to a second embodiment. [Figure 6] FIG. 11 is a side view illustrating a configuration of a wire harness according to a second embodiment. [Figure 7] FIG. 11 is a plan view illustrating a configuration of a wire harness according to a third embodiment. [Figure 8] FIG. 11 is a side view illustrating a configuration of a wire harness according to a third embodiment. [Figure 9] Fig. 9A is a plan view showing the configuration of the tube, and Fig. 9B is a cross-sectional view taken along line IXB-IXB in Fig. 9A. [Figure 10] 4 is a cross-sectional view taken along line IV-IV in FIG. 1 when the stranded electric wires 7 are untwisted at a third portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Exemplary embodiments of the present disclosure will now be described with reference to the drawings. First Embodiment 1. Wire harness 1 configuration The configuration of the wire harness 1 will be described with reference to Fig. 1 to Fig. 4. The wire harness 1 is used in vehicles such as automobiles and railway cars. As shown in Figs. 1 and 2, the wire harness 1 includes a cable 3 and a bracket 5.

[0009] 1, the cable 3 includes a first portion 3A, a second portion 3B, and a third portion 3C. The third portion 3C is located between the first portion 3A and the second portion 3B in the longitudinal direction of the cable 3.

[0010] The first section 3A and the second section 3B have the same configuration. Fig. 3 is a cross-sectional view of the first section 3A taken along line III-III. The first section 3A includes a stranded electric wire 7, a tape 9, and an outer sheath 11.

[0011] The stranded electric wire 7 is formed by twisting together a first electric wire 13, a second electric wire 15, and a third electric wire 17. The first electric wire 13 includes a conductor 19 and an insulating layer 21. The conductor 19 is formed by twisting together a plurality of conductor wires. The insulating layer 21 covers the outer circumferential surface of the conductor 19. The second electric wire 15 has a similar configuration to the first electric wire 13. The first electric wire 13 and the second electric wire 15 are, for example, a power supply line for an electric brake or a power supply line for an electric parking brake. The plurality of conductor wires constituting the conductor 19 are made of, for example, copper or a copper alloy. The insulating layer 21 is made of, for example, polyethylene.

[0012] The third electric wire 17 includes two core wires 23 and an inner sheath 25. The two core wires 23 are twisted together. Each core wire 23 includes a conductor 27 and an insulating layer 29. The conductor 27 is formed by twisting together a plurality of conductor wires. The insulating layer 29 covers the outer circumferential surface of the conductor 27. The inner sheath 25 covers the two core wires 23. The two core wires 23 are, for example, signal wires for an ABS sensor. The plurality of conductor wires constituting the conductor 27 are made of, for example, copper or a copper alloy. The insulating layer 29 is made of, for example, polyethylene. The inner sheath 25 is made of, for example, thermoplastic urethane.

[0013] The tape 9 is wound in a spiral shape on the outer peripheral surface of the stranded electric wire 7. The outer sheath 11 is provided on the outer peripheral side of the tape 9. The tape 9 is in contact with the stranded electric wire 7 and the outer sheath 11. Examples of the material of the outer sheath 11 include thermoplastic resin, rubber, etc. Examples of the thermoplastic resin include thermoplastic urethane, etc. Examples of the rubber include ethylene propylene diene rubber (EPDM). The thermoplastic resin and the rubber may be crosslinked or not crosslinked. The thickness of the outer sheath 11 is preferably 0.3 mm or more and 3.0 mm or less. The tape 9 may be wound vertically on the outer peripheral surface of the stranded electric wire 7. The tape 9 is a paper tape, a nonwoven fabric tape, a resin tape, or the like.

[0014] As shown in FIG. 1, the first part 3A and the second part 3B each have a straight shape in a plan view. The first part 3A and the second part 3B each include a tape 9 and an outer sheath 11. The third part 3C does not include the tape 9 and the outer sheath 11. Also, as shown in FIG. 1, the third part 3C has a bent shape in a plan view. The angle of bending in the third part 3C may be an acute angle, a right angle, or an obtuse angle. In other respects, the third part 3C has a configuration similar to that of the first part 3A and the second part 3B. The third part 3C includes a twisted electric wire 7, but in the third part 3C, the twisted electric wire 7 may be twisted or the twisted electric wire 7 may be untwisted. The third part 3C is formed by removing a part of the tape 9 and the outer sheath 11 in the longitudinal direction of the cable 3 in a state in which the third part 3C is not formed. FIG. 4 shows a cross section of the third part 3C when the twisted electric wires 7 are twisted in the third part 3C. FIG. 10 shows a cross section of the third part 3C when the twisted electric wires 7 are untwisted in the third part 3C. As shown in FIG. 10, when the twisted electric wires 7 are untwisted, the third electric wire 17 is on the inner side DI of the third part 3C, and the first electric wire 13 and the second electric wire 15 are on the outer side DO of the third part 3C. As shown in FIG. 1, the inner side DI is the inner side in the bent shape of the third part 3C. The outer side DO is the outer side in the bent shape of the third part 3C. Since there is only one third electric wire 17 on the inner side DI, it is easy to bend the third part 3C. The central axis of the cable 3 is parallel to one imaginary plane SP shown in FIG. 2. The central axis of the first part 3A, the central axis of the second part 3B, and the central axis of the third part 3C are each parallel to the plane SP.

[0015] The bracket 5 is a plate-like member made of metal such as aluminum or iron. The bracket 5 includes a first arm 31, a second arm 33, and a connecting portion 34. The connecting portion 34 connects the first arm 31 and the second arm 33. In a plan view, the first arm 31 and the second arm 33 are each shaped like a strip extending along a straight line. The first arm 31 extends in a direction intersecting (perpendicular to) the longitudinal direction of the first portion 3A. The second arm 33 extends in a direction intersecting (perpendicular to) the longitudinal direction of the second portion 3B. The main surface of the first arm 31 and the main surface of the second arm 33 are each parallel to the plane SP. The thickness direction of the first arm 31 and the thickness direction of the second arm 33 are each perpendicular to the plane SP. The basic form of the bracket 5 is an L-shape in plan view in which a first arm 31 and a second arm 33 are connected to a connecting portion 34. The connecting portion 34 is located on the inside DI of the third part 3C. By having the connecting portion 34 located on the inside DI of the third part 3C, the first arm 31, the second arm 33, and the connecting portion 34 are not located on the outside DO of the third part 3C, and the wire harness 1 can be made compact. The shapes of the first arm 31 and the second arm 33 may be curved.

[0016] The bracket 5 has a first holding portion 35 at the tip of the first arm 31. The bracket 5 also has a second holding portion 37 at the tip of the second arm 33. The first holding portion 35 and the second holding portion 37 have the same configuration. As shown in FIG. 2, the second holding portion 37 has a main body portion 39 curved in an arc shape and a tip portion 41. FIG. 2 shows the configuration as seen from a direction perpendicular to the thickness direction of the second arm 33 and perpendicular to the longitudinal direction of the second arm 33. The tip portion 41 is located further toward the tip side of the second holding portion 37 than the main body portion 39, and extends straight in the direction of the connecting portion 34.

[0017] A part of the first part 3A is housed inside the main body 39 of the first holding part 35. The first holding part 35 holds the first part 3A by crimping the first part 3A in the main body 39. The inner circumferential surface of the main body 39 contacts the outer circumferential surface of the outer sheath 11.

[0018] A part of the second portion 3B is housed inside a main body portion 39 of the second holding portion 37. The second portion 3B is crimped by the main body portion 39, so that the second holding portion 37 holds the second portion 3B. The inner circumferential surface of the main body portion 39 contacts the outer circumferential surface of the outer sheath 11.

[0019] The bracket 5 holds the cable 3 by the first holding portion 35 holding the first portion 3A and the second holding portion 37 holding the second portion 3B. The bracket 5 is also a member that is more rigid than the cable 3 and is less likely to deform. Furthermore, the bracket 5 holds the first portion 3A and the second portion 3B of the cable 3. Therefore, the bracket 5 keeps the shape of the cable 3 constant. In particular, the bracket 5 keeps the shape of the third portion 3C constant.

[0020] The bracket 5 has a bolt hole 43. The bolt hole 43 is a hole that penetrates the connecting portion 34 in the thickness direction. The bracket 5 has a circumferential stop pin 45. The circumferential stop pin 45 is provided in the second arm portion 33. As shown in FIG. 2, the circumferential stop pin 45 protrudes in the thickness direction of the bracket 5 on the side opposite to the side on which the cable 3 is present. The circumferential stop pin 45 may be provided in the first arm portion 31 or the connecting portion 34. The shape of the circumferential stop pin 45 is cylindrical in this embodiment, but it may be polygonal or claw-shaped.

[0021] The wire harness 1 can be fixed to a fixing object (not shown) using the bolt holes 43 and the circumferential stop pins 45. For example, the wire harness 1 can be fixed to the fixing object by a bolt passing through the bolt holes 43. Furthermore, by inserting the circumferential stop pins 45 into holes provided in the fixing object, it is possible to prevent the wire harness 1 from rotating relative to the fixing object.

[0022] 2. Benefits of Wire Harness 1 (1A) The bracket 5 holds the cable 3 at both the first holding portion 35 and the second holding portion 37. Therefore, vibration of the cable 3 can be suppressed more effectively than if the bracket 5 held the cable 3 at only one point.

[0023] (1B) Since the third part 3C does not include the tape 9 and the outer sheath 11, the third part 3C can be bent with a large curvature. This allows the bracket 5 to be made smaller. By making the bracket 5 smaller, the wire harness 1 can be attached in a narrow space. <Second embodiment> 1. Differences from the first embodiment The second embodiment has a basic configuration similar to that of the first embodiment, and therefore differences will be described below. Note that the same reference numerals as those in the first embodiment indicate the same configuration, and the preceding description will be referred to.

[0024] The second embodiment differs from the first embodiment in that it further includes a resin molded portion 51, as shown in Figs. 5 and 6. The resin molded portion 51 is a hollow tubular member. The resin molded portion 51 covers the entire third portion 3C. The resin molded portion 51 does not cover the first portion 3A and the second portion 3B. As shown in Fig. 5, the resin molded portion 51 has a bent shape in plan view similar to the third portion 3C. Examples of materials for the resin molded portion 51 include urethane, polybutylene terephthalate (PBT), polyamide (PA), etc.

[0025] The inner peripheral surface of the resin molded portion 51 is in contact with the outer peripheral surface of the third portion 3C. Ends of the resin molded portion 51 in the longitudinal direction of the cable 3 are in contact with ends of the outer sheath 11 at the boundary between the third portion 3C and the first portion 3A and at the boundary between the third portion 3C and the second portion 3B. The resin molded portion 51 enters a valley formed by contact between the first electric wire 13, the second electric wire 15, and the third electric wire 17 in the third portion 3C. The resin molded portion 51 can be manufactured, for example, by the following method. The cable 3 is placed in a metal mold that corresponds to the shape of the resin molded portion 51. At this time, the shape of the cable 3 is the same as the shape of the finished wire harness 1. Next, liquid resin, which is the material of the resin molded portion 51, is poured into the metal mold, and the resin molded portion 51 is formed by resin molding.

[0026] 2. Benefits of Wire Harness 1 According to the second embodiment described above in detail, in addition to the effects of the first embodiment described above, the following effects are also obtained.

[0027] (2A) The resin molded portion 51 protects the third portion 3C. For example, even when the wire harness 1 is attached to the lower portion of a vehicle and flying stones or the like fly toward the wire harness 1, the third portion 3C can be protected from the flying stones or the like. <Third embodiment> 1. Differences from the first embodiment The third embodiment has a basic configuration similar to that of the first embodiment, and therefore differences will be described below. Note that the same reference numerals as those in the first embodiment indicate the same configurations, and the preceding description will be referred to.

[0028] The third embodiment differs from the first embodiment in that it further includes a tube 61, as shown in Figs. 7 and 8. The tube 61 is a hollow tubular member. In this embodiment, the shape of the tube 61 is cylindrical. The tube 61 covers the entire third portion 3C, a portion of the first portion 3A on the third portion 3C side, and a portion of the second portion 3B on the third portion 3C side. The portion of the tube 61 that covers the third portion 3C is bent in the same manner as the third portion 3C.

[0029] The first holding part 35 holds the part of the first part 3A that is covered with the tube 61. The tube 61 is present between the first holding part 35 and the first part 3A. The outer peripheral surface of the tube 61 is in contact with the inner peripheral surface of the main body part 39 of the first holding part 35. The second holding part 37 holds the part of the second part 3B that is covered with the tube 61. The tube 61 is present between the second holding part 37 and the second part 3B. The outer peripheral surface of the tube 61 is in contact with the inner peripheral surface of the main body part 39 of the second holding part 37.

[0030] 9A and 9B, the tube 61 has a slit 63. The slit 63 penetrates the tube 61 in the thickness direction. The slit 63 continues in the longitudinal direction of the tube 61 from one end 61A to the opposite end 61B.

[0031] 9A and 9B, the position of the slit 63 in the circumferential direction DW of the tube 61 is a position that is an inner side DI with respect to bending at the third portion 3C. The position of the slit 63 in the circumferential direction DW may be another position, for example, any of positions P1, P2, and P3 shown in FIG.

[0032] The material of the tube 61 is preferably an elastic material, for example, urethane, ethylene propylene diene rubber (EPDM), vinyl chloride, nylon, etc.

[0033] 2. Benefits of Wire Harness 1 According to the third embodiment described above in detail, in addition to the effects of the first embodiment described above, the following effects are also obtained.

[0034] (3A) The tube 61 protects the third part 3C. For example, even if the wire harness 1 is attached to the lower part of a vehicle and flying stones or the like fly toward the wire harness 1, the third part 3C can be protected from the flying stones or the like.

[0035] (3B) Tube 61 has a slit 63. With slit 63 in an open state, cable 3 can be housed inside tube 61 through slit 63. After cable 3 is housed inside tube 61, slit 63 can be closed. (3C) The first holding portion 35 holds the portion of the first part 3A that is covered with the tube 61. The second holding portion 37 holds the portion of the second part 3B that is covered with the tube 61. The tube 61 is held from the outer periphery by the first holding portion 35 and the second holding portion 37. This makes it possible to prevent the slit 63 from opening.

[0036] (3D) A tube 61 is present between the first holding portion 35 and the first part 3A. Also, a tube 61 is present between the second holding portion 37 and the second part 3B. Therefore, when the first holding portion 35 and the second holding portion 37 are crimped, damage to the first part 3A and the second part 3B can be suppressed. <Other embodiments> Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be implemented in various modified forms.

[0037] (1) In the second embodiment, the resin molded portion 51 may cover the entire third portion 3C, the portion of the first portion 3A facing the third portion 3C, and the portion of the second portion 3B facing the third portion 3C, similar to the tube 61 in the third embodiment.

[0038] In this case, the first holding portion 35 holds the portion of the first part 3A that is covered with the resin molded portion 51. The second holding portion 37 holds the portion of the second part 3B that is covered with the resin molded portion 51.

[0039] In the above embodiment, the resin molded portion 51 is present between the first holding portion 35 and the first portion 3A. Also, the resin molded portion 51 is present between the second holding portion 37 and the second portion 3B. Therefore, when the first holding portion 35 and the second holding portion 37 are crimped, damage to the first portion 3A and the second portion 3B can be suppressed. The resin molded portion 51 and the external sheath 11 in the first portion 3A and the second portion 3B may be welded. In this case, it is possible to suppress the intrusion of foreign matter such as water into the resin molded portion 51 and the external sheath 11 from the interface between the resin molded portion 51 and the external sheath 11.

[0040] (2) In the third embodiment, the tube 61 may not cover the first portion 3A and the second portion 3B, similar to the resin molded portion 51 in the second embodiment. Even in this case, the effects of (3A) and (3B) can be obtained.

[0041] (3) The first portion 3A or the second portion 3B may include a curved portion in a plan view. The third portion 3C may include a curved portion and a straight portion in a plan view. (4) The shape of the bracket 5 may be a shape other than an L-shape. For example, the shape of the bracket 5 may be an arc shape, a straight line shape, etc. The position of the bracket 5 relative to the cable 3 is not limited to the positions in the first to third embodiments. For example, in Figs. 1, 5, and 7, the bracket 5 may be located to the upper right of the cable 3. (5) The first holding portion 35 and the second holding portion 37 may hold the cable 3 by a method other than crimping.

[0042] (6) The function of one component in each of the above embodiments may be shared by multiple components, or the functions of multiple components may be performed by one component. Also, part of the configuration of each of the above embodiments may be omitted. Also, at least part of the configuration of each of the above embodiments may be added to or substituted for the configuration of another of the above embodiments.

[0043] (7) In addition to the above-described wire harness 1, the present disclosure can be realized in various forms, such as a system including the wire harness 1 as a component, a manufacturing method for the wire harness 1, and the like. [Explanation of symbols]

[0044] 1...wire harness, 3...cable, 3A...first part, 3B...second part, 3C...third part, 5...bracket, 7...stranded wire, 9...tape, 11...outer sheath, 13...first electric wire, 15...second electric wire, 17...third electric wire, 19...conductor, 21...insulating layer, 23...core wire, 25...inner sheath, 27...conductor, 29...insulating layer, 31...first arm portion, 33...second arm portion, 34...connecting portion, 35...first retaining portion, 37...second retaining portion, 39...main body portion, 41...tip portion, 43...bolt hole, 45...circumferential retaining pin, 51...resin molded portion, 61...tube, 61A, 61B...end portion, 63...slit

Claims

1. Cables and A bracket for holding the cable; Equipped with The cable includes: a first section and a second section each having an outer sheath; a third section located between the first section and the second section, not including the outer sheath, and at least a portion of which is bent; Equipped with The bracket is A first holding portion that holds the first portion; A second holding portion that holds the second portion; Equipped with Wire harness.

2. The wire harness according to claim 1, Further comprising a tube covering the third portion; The tube has a slit extending from one end to the opposite end in the longitudinal direction of the tube. Wire harness.

3. The wire harness according to claim 2, the tube is configured to further cover a portion of the first portion and a portion of the second portion; the first holding portion holds the first portion covered by the tube, The second holding portion holds the second portion covered by the tube. Wire harness.

4. The wire harness according to claim 1, Further comprising a resin molding portion covering the third portion. Wire harness.

5. The wire harness according to claim 4, The resin molding portion is configured to further cover a portion of the first portion and a portion of the second portion, the first holding portion holds the first portion covered by the resin molding portion, The second holding portion holds the second portion covered by the resin molded portion. Wire harness.

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