Wire harness

Abstract

To provide a wire harness capable of suppressing the radiation of an electromagnetic wave from the periphery of a connection portion by securing a good connection state of an electromagnetic shielding member.SOLUTION: A wire harness has: a plurality of shielded electric wires (13, 14) which have core wires (13a, 14a) and electromagnetic shielding members (13c, 14c) covering outer peripheries of the core wire, respectively; a connection portion by which the core wires are connected; a resin case (21) which covers an outer periphery of the connection portion; a shielding coupling member (31) to which the plurality of electromagnetic shielding members are connected while covering an outer periphery of the resin case; a binding band (33) which binds and connects the electromagnetic shielding member of each of the plurality of shielded electric wires and the shielding coupling member while tying the plurality of shielded electric wires. The resin case has a spacer portion (24) which is interposed between the plurality of shielded electric wires inside the binding band to thereby suppress deformation of the plurality of shielded electric wires.SELECTED DRAWING: Figure 7

Description

[Technical Field]

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

[0002] Conventionally, some wire harnesses have a connection part where core wires of a plurality of electric wires are connected to each other (see, for example, Patent Document 1). In this wire harness, the connection part is exposed from the insulating coating of each electric wire, but the exposed part including the connection part is covered with a waterproof material to prevent water from entering from the outside. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-248527 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, shielded electric wires are sometimes used as the electric wires of such wire harnesses. Shielded electric wires have an electromagnetic shielding member, such as a braided wire, that covers the outer periphery of a core wire via an insulating coating, thereby suppressing electromagnetic wave radiation. However, even when a shielded electric wire is used, there is a risk of electromagnetic waves being radiated from the periphery of the connection portion due to the periphery of the connection portion being exposed from the electromagnetic shielding member. One possible solution to this problem is to directly connect the electromagnetic shielding members to each other outside the connection portion, but it is difficult to achieve a good connection while covering the entire periphery of the connection portion.

[0005] An object of the present disclosure is to provide a wire harness that can suppress radiation of electromagnetic waves from around a connection portion by ensuring a good connection state of an electromagnetic shielding member. [Means for solving the problem]

[0006] A wire harness according to the present disclosure includes a plurality of shielded electric wires, each having a core wire and an electromagnetic shielding member covering the outer periphery of the core wire; a connection portion at which the core wires are connected; a resin case covering the outer periphery of the connection portion; a shield connecting member covering the outer periphery of the resin case and connecting the plurality of electromagnetic shielding members; and a cable tie that bundles the plurality of shielded electric wires and ties together and connects the electromagnetic shielding member of each of the plurality of shielded electric wires to the shield connecting member, and the resin case has a spacer portion that is interposed between the plurality of shielded electric wires inside the cable tie to suppress deformation of the plurality of shielded electric wires. [Effects of the Invention]

[0007] According to the wire harness of the present disclosure, a good connection state of the electromagnetic shielding member can be ensured, thereby suppressing radiation of electromagnetic waves from the periphery of the connection portion. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a cross-sectional view of a wire harness according to a first embodiment. [Figure 2] FIG. 2 is a partially enlarged cross-sectional view of the wire harness according to the first embodiment. [Figure 3] FIG. 3 is a partially enlarged cross-sectional view of the wire harness according to the first embodiment. [Figure 4] FIG. 4 is an exploded perspective view of a part of the wire harness in the first embodiment. [Figure 5] FIG. 5 is an exploded perspective view of the resin case in the first embodiment. [Figure 6] FIG. 6 is a perspective view of a part of the wire harness in the first embodiment. [Figure 7] FIG. 7 is a cross-sectional view of a part of the wire harness according to the first embodiment. [Figure 8] FIG. 8 is a cross-sectional view of the wire harness according to the second embodiment. [Figure 9] FIG. 9 is a partially enlarged cross-sectional view of the wire harness according to the second embodiment. [Figure 10] FIG. 10 is a partially enlarged cross-sectional view of the wire harness according to the second embodiment. [Figure 11] FIG. 11 is an exploded perspective view of a part of the wire harness according to the second embodiment. [Figure 12] FIG. 12 is an exploded perspective view of a resin case according to the second embodiment. [Figure 13] FIG. 13 is a perspective view of a part of the wire harness according to the second embodiment. [Figure 14] FIG. 14 is a cross-sectional view of a part of the wire harness according to the second embodiment. [Figure 15] FIG. 15 is a cross-sectional view of a wire harness according to another embodiment. [Figure 16] FIG. 16 is an enlarged cross-sectional view of a part of a wire harness according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. The wire harness of the present disclosure includes: [1] A device comprising: a plurality of shielded electric wires each having a core wire and an electromagnetic shielding member covering the outer periphery of the core wire; a connection portion at which the core wires are connected; a resin case covering the outer periphery of the connection portion; a shield connecting member covering the outer periphery of the resin case and connecting the plurality of electromagnetic shielding members; and a cable tie that bundles the plurality of shielded electric wires and ties together and connects the electromagnetic shielding member of each of the plurality of shielded electric wires and the shield connecting member, wherein the resin case has a spacer portion that is interposed between the plurality of shielded electric wires inside the cable tie to suppress deformation of the plurality of shielded electric wires.

[0010] According to this configuration, the shield connection member covers the multiple electromagnetic shield members, thereby suppressing electromagnetic wave radiation from the periphery of the connection. Furthermore, because the multiple electromagnetic shield members are connected together to the shield connection member with cable ties, the number of components can be reduced compared to, for example, a configuration in which multiple electromagnetic shield members are individually connected to the shield connection member with multiple cable ties. Furthermore, the spacer portion interposed between the multiple shield wires bound with the cable ties suppresses deformation, thereby ensuring a good connection between the multiple electromagnetic shield members and the shield connection member. That is, for example, in a configuration without a spacer portion, the multiple shield wires may bend toward each other or otherwise deform when bound with the cable ties, resulting in a risk of a reduced surface pressure between the electromagnetic shield members and the shield connection member, resulting in an unstable connection. In contrast, the spacer portion suppresses deformation of the multiple shield wires, thereby ensuring a good connection between the multiple electromagnetic shield members and the shield connection member. Furthermore, because the spacer portion is provided in the resin case, the number of components can be reduced compared to, for example, a configuration in which the spacer portion is provided separately from the resin case.

[0011] [2] In the above [1], the spacer portion may have an arc portion that follows the outer periphery of the shielded electric wire. According to this configuration, the spacer portion has an arc portion that follows the outer periphery of the shielded electric wire, and therefore, the shielded electric wire can be effectively prevented from being deformed in a crushing manner.

[0012] [3] In the above [1] or [2], the shielded electric wire may have an outer insulating coating that covers the outer periphery of the electromagnetic shielding member, and the electromagnetic shielding member may have a folded portion that is folded from the inside to the outside of the outer insulating coating and is arranged to cover the outer periphery of the outer insulating coating, and the cable tie may bundle the folded portion and the shield connecting member together.

[0013] With this configuration, the folded portion of the electromagnetic shielding member, which is positioned to cover the outer periphery of the outer insulating coating, is bound together with the shield connecting member by a cable tie, allowing the electromagnetic shielding member to come into contact with the shield connecting member over a wider area than when, for example, the electromagnetic shielding member is not folded back to cover the outer periphery of the outer insulating coating.

[0014] [4] In the above [3], an underlay ring may be provided between the outer insulating coating and the folded portion. According to this configuration, the folded portion and the shield connecting member can be stably sandwiched between the underlay ring and the cable tie, thereby achieving a good connection.

[0015] [5] In the above [3], the folded portion may be bound by the binding band in a state of contact with the outer peripheral surface of the outer insulating coating. According to this configuration, the number of parts can be reduced compared to a configuration in which an underlay ring is provided inside the folded portion, for example.

[0016] [6] In any one of [1] to [5] above, the resin case may have a band regulating portion that can engage with the cable tie to regulate the shifting of the cable tie along the longitudinal direction of the shielded electric wire.

[0017] According to this configuration, the band restricting portion restricts the cable tie from shifting along the longitudinal direction of the shielded wire, thereby enabling a stable connection state between the multiple electromagnetic shielding members and the shield connecting member to be maintained.

[0018] [7] In any one of the above items [1] to [6], the resin case may have a first separate case and a second separate case assembled to sandwich the connecting portion.

[0019] According to this configuration, the outer periphery of the connection portion can be easily covered by the first separate case and the second separate case. [8] In the above item [7], the first separate case and the second separate case may have the same shape.

[0020] According to this configuration, only one type of mold is required to manufacture the first separate case and the second separate case, which simplifies manufacturing and simplifies parts management for the first separate case and the second separate case.

[0021] [9] In the above [7] or [8], the first and second split cases may have locking portions that lock together on both sides of the width direction, which is the direction in which the multiple shielded electric wires bundled by the cable tie are arranged.

[0022] According to this configuration, both sides of the resin case in the width direction can be locked in a balanced manner by the locking portions.

[10] In any one of [7] to [9] above, the first split case and the second split case may have an intermediate locking portion that locks them together between the multiple shielded electric wires bundled by the cable tie.

[0023] According to this configuration, the space between the plurality of shielded electric wires bundled with the cable tie can be effectively utilized by the intermediate locking portion.

[11] In any one of [1] to

[10] above, the plurality of shielded electric wires may have a first shielded electric wire and a second shielded electric wire extending in opposite directions from the connection point, and at least one of the first shielded electric wire and the second shielded electric wire may be provided in plurality, and one of the first shielded electric wire and the second shielded electric wire may be bundled in the cable tie.

[0024] According to this configuration, when bundling a plurality of shielded electric wires, it is possible to reduce the number of parts and to satisfactorily connect a plurality of electromagnetic shield members and the shield connecting member.

[12] In any one of the above [1] to

[11] , a waterproof member may be provided that collectively covers the resin case, the electromagnetic shielding member, the shield connecting member, and the cable tie.

[0025] According to this configuration, the connection portion, the electromagnetic shield member, and the shield connecting member can all be prevented from being exposed to water.

[13] In any one of [1] to

[11] above, a connection waterproofing member may be provided that covers the connection portion within the resin case, and the shield connecting member and the cable tie may be exposed.

[0026] According to this configuration, the connection waterproofing member can prevent the connection from getting wet. Also, compared to a configuration including a waterproofing member that collectively covers the shield connecting member, etc., it can be made smaller, for example.

[0027] [Details of the embodiments of the present disclosure] (First embodiment) Specific examples of the wire harness of the present disclosure will be described below with reference to the drawings. In each drawing, for convenience of explanation, some of the configuration may be exaggerated or simplified. Furthermore, the dimensional ratios of each part may differ between drawings. In this specification, "parallel," "orthogonal," and "circular" do not only refer to strictly parallel, orthogonal, or circular, but also include approximately parallel, orthogonal, or circular within the scope of the effects of this embodiment. Note that the present invention is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0028] (Configuration of wire harness 11) 1, the wire harness 11 includes one first shielded electric wire 12 as a shielded electric wire, two second shielded electric wires 13 and 14 as shielded electric wires, and an underlay ring 15 (see FIGS. 2 and 3). The wire harness 11 also includes a resin case 21, a shield connecting member 31, a crimping ring 32 (see FIG. 2), a bundling crimping ring 33 as a cable tie (see FIG. 3), and a waterproof member 34.

[0029] (Configuration of the first shielded electric wire 12, the second shielded electric wires 13, 14 and the underlay ring 15) 2, the first shielded wire 12 has a first core wire 12a as a core wire and an inner insulating coating 12b that covers the outer periphery of the first core wire 12a. The cross-sectional shape of the first core wire 12a is circular. The first shielded wire 12 also has a first electromagnetic shield member 12c as an electromagnetic shield member that covers the outer periphery of the inner insulating coating 12b, and an outer insulating coating 12d that covers the outer periphery of the first electromagnetic shield member 12c.

[0030] 3, the second shielded electric wires 13, 14 include second core wires 13a, 14a as core wires and inner insulating coatings 13b, 14b that cover the outer peripheries of the second core wires 13a, 14a. The second core wires 13a, 14a have a circular cross-sectional shape. The second shielded electric wires 13, 14 also include second electromagnetic shield members 13c, 14c that cover the outer peripheries of the inner insulating coatings 13b, 14b and outer insulating coatings 13d, 14d that cover the outer peripheries of the second electromagnetic shield members 13c, 14c.

[0031] The first electromagnetic shield member 12c and the second electromagnetic shield members 13c, 14c suppress radiation of electromagnetic waves from the first core wire 12a and the second core wires 13a, 14a. In this embodiment, the first electromagnetic shield member 12c and the second electromagnetic shield members 13c, 14c are braided wires in which conductive wires such as aluminum alloy wires are braided into a cylindrical shape. In the drawings, the shapes and appearances of the braided wires in the first electromagnetic shield member 12c and the second electromagnetic shield members 13c, 14c are shown schematically as appropriate.

[0032] At the ends of the first shielded electric wire 12 and the second shielded electric wires 13 and 14, the first core wire 12a and the second core wire 13a and 14a are exposed to the outside. At the ends of the first shielded electric wire 12 and the second shielded electric wires 13 and 14, the first electromagnetic shield member 12c and the second electromagnetic shield member 13c and 14c are exposed to the outside. The first electromagnetic shield member 12c and the second electromagnetic shield member 13c and 14c have folded-back portions 12e, 13e, and 14e that are folded back from the inside to the outside of the outer insulating coatings 12d, 13d, and 14d and arranged to cover the outer peripheries of the outer insulating coatings 12d, 13d, and 14d. In other words, the first electromagnetic shield member 12c and the second electromagnetic shield member 13c and 14c have folded-back portions 12e, 13e, and 14e that are formed by folding back portions exposed outside the outer insulating coatings 12d, 13d, and 14d.

[0033] First, the outer insulating coatings 12d, 13d, and 14d are stripped from the ends of the first shielded electric wire 12 and the second shielded electric wires 13 and 14. Next, the first electromagnetic shield member 12c and the second electromagnetic shield member 13c and 14c are folded back from the ends of the first shielded electric wire 12 and the second shielded electric wires 13 and 14, and then the inner insulating coatings 12b, 13b, and 14b are stripped back. As a result, the first electromagnetic shield member 12c and the second electromagnetic shield member 13c and 14c are exposed, folded-back portions 12e, 13e, and 14e are formed, and the first core wire 12a and the second core wire 13a and 14a are exposed.

[0034] The underlying ring 15 is made of metal and formed into a cylindrical shape. The underlying ring 15 is disposed between the outer insulating coatings 12d, 13d, 14d and the folded-back portions 12e, 13e, 14e. In other words, the underlying ring 15 is disposed on the outer periphery of the outer insulating coatings 12d, 13d, 14d when the first electromagnetic shield member 12c and the second electromagnetic shield member 13c, 14c are folded back.

[0035] The first core wire 12a and the second core wires 13a, 14a are connected to each other to form a connection portion 16. In this embodiment, the first core wire 12a and the second core wires 13a, 14a are directly welded to each other. The first shielded electric wire 12 and the second shielded electric wires 13, 14 extend in opposite directions from the connection portion 16. More specifically, the first shielded electric wire 12 and the second shielded electric wires 13, 14 extend in one direction (leftward in FIG. 1 ) from the connection portion 16, and the two second shielded electric wires 13, 14 extend in the other direction (rightward in FIG. 1 ). The wire harness 11 electrically connects, for example, a battery connected to the first core wire 12a and electric devices connected to the second core wires 13a, 14a, respectively.

[0036] (Configuration of resin case 21) As shown in FIG. 4, the resin case 21 is formed in a flat box shape that can cover the outer periphery of the connection portion 16. The resin case 21 is composed of a first separate case 22 and a second separate case 23 that are assembled to sandwich the connection portion 16. The resin case 21, i.e., the first separate case 22 and the second separate case 23, can be made of a synthetic resin such as polypropylene, polyamide, or polyacetal. The first separate case 22 and the second separate case 23 have the same shape. In other words, the first separate case 22 and the second separate case 23 have the same product number.

[0037] 4 and 5, the first separate case 22 and the second separate case 23 have semicircular openings 22a, 22b, 22c, 23a, 23b, and 23c, each of which has a semicircular arc shape and is positioned to sandwich the exposed inner insulating coatings 12b, 13b, and 14b. The first separate case 22 and the second separate case 23 also have locking portions 22d, 22e, 23d, and 23e, which lock the first separate case 22 and the second separate case 23, on both sides in the width direction, which is the direction in which the second shielded electric wires 13 and 14 are arranged. In the first separate case 22, one locking portion 22d is a male locking portion, and the other locking portion 22e is a female locking portion. In the second separate case 23, one locking portion 23d is a male locking portion, and the other locking portion 23e is a female locking portion. The first separate case 22 and the second separate case 23 are locked to each other by the male locking portion of the first separate case 22 fitting into the female locking portion of the second separate case 23, and the male locking portion of the second separate case 23 fitting into the female locking portion of the first separate case 22.

[0038] (Configuration of shield connecting member 31, crimping ring 32, and bundling crimping ring 33) As shown in FIG. 6 , the shield connecting member 31 suppresses radiation of electromagnetic waves from the resin case 21. The shield connecting member 31 connects the first electromagnetic shield member 12c and the second electromagnetic shield members 13c and 14c while covering the outer periphery of the resin case 21. The shield connecting member 31 is flexible. The shield connecting member 31 of this embodiment is a braided wire in which conductive wires such as aluminum alloy are braided into a tubular shape. Note that the figure schematically illustrates the shape and appearance of the braided wire in the shield connecting member 31 as appropriate. The shield connecting member 31 is arranged to continuously cover the area from the folded-back portion 12e of the first electromagnetic shield member 12c to the folded-back portions 13e and 14e of the second electromagnetic shield members 13c and 14c.

[0039] 2, the crimping ring 32 is made of metal and formed into a cylindrical shape. The crimping ring 32 connects the folded-back portion 12e of the first electromagnetic shield member 12c and the shield connecting member 31. More specifically, the crimping ring 32 is crimped from the outer periphery, thereby connecting the folded-back portion 12e of the first electromagnetic shield member 12c and the shield connecting member 31 by tightening them from the outer periphery. The folded-back portion 12e and the shield connecting member 31 are connected by being sandwiched between the underlay ring 15 and the crimping ring 32.

[0040] 3 and 7, the bundling crimping ring 33 is made of metal and formed into a cylindrical shape. The bundling crimping ring 33 connects the folded-back portions 13e, 14e of the second electromagnetic shield members 13c, 14c to the shield connecting member 31. Specifically, the bundling crimping ring 33 is crimped from the outer periphery to bundle the two second shielded electric wires 13, 14 and to connect the folded-back portions 13e, 14e of the two second electromagnetic shield members 13c, 14c to the shield connecting member 31 by bundling them together. Note that, when assembled, the bundling crimping ring 33 has a pair of semicircular arc portions 33a provided on both sides in the width direction of the resin case 21, as viewed in the longitudinal direction of the second shielded electric wires 13, 14 (see FIG. 7). The bundling crimping ring 33 has a pair of semicircular arc portions 33a provided on both sides in the width direction of the resin case 21, and a pair of connecting portions 33b connecting the ends of the semicircular arc portions 33a.

[0041] (Configuration of waterproof member 34) As shown in FIG. 1 , the waterproof member 34 collectively covers the resin case 21, the folded portions 12e, 13e, and 14e of the first electromagnetic shield member 12c and the second electromagnetic shield member 13c and 14c, the shield connecting member 31, the crimping ring 32, and the bundling crimping ring 33. The waterproof member 34 of this embodiment is a non-conductive molded resin. The waterproof member 34 of this embodiment is molded by filling a molten resin material into an area surrounded by a molding die (not shown) that is arranged outside the shield connecting member 31 and other components. Note that, in this embodiment, the molten resin material penetrates until it reaches the connection portions 16 and other components arranged inside the resin case 21, and then hardens. That is, the waterproof member 34 of this embodiment is also arranged inside the resin case 21.

[0042] (Detailed configuration of the resin case 21) 3 and 7, the resin case 21 has a spacer portion 24. The spacer portion 24 is interposed between the two second shielded electric wires 13, 14 inside the bundling crimping ring 33, thereby suppressing deformation of the second shielded electric wires 13, 14.

[0043] More specifically, as shown in FIG. 7, the spacer portion 24 is made up of a first divided spacer portion 22f provided in the first separate case 22 and a second divided spacer portion 23f provided in the second separate case 23.

[0044] The spacer portion 24 has an arc portion 24a that follows the outer periphery of the second shielded electric wires 13 and 14. More specifically, the arc portion 24a is formed in an arc shape that follows the outer periphery of the folded-back portions 13e and 14e. When viewed in the longitudinal direction of the second shielded electric wires 13 and 14, the arc portion 24a is formed as a pair so as to fill almost the entire space between the opposing folded-back portions 13e and 14e.

[0045] 6 and 7 , the resin case 21 has band restraining portions 24b that can engage with the bundling crimping ring 33 to restrict misalignment of the bundling crimping ring 33 along the longitudinal direction of the second shielded electric wires 13, 14. The band restraining portions 24b protrude from the spacer portion 24. A pair of band restraining portions 24b is provided in the longitudinal direction of the second shielded electric wires 13, 14, and the bundling crimping ring 33 is disposed between the pair of band restraining portions 24b, thereby restricting misalignment of the bundling crimping ring 33 along the longitudinal direction of the second shielded electric wires 13, 14. In addition, the band restraining portions 24b are provided on each of the first separate case 22 and the second separate case 23. That is, the band restraining portions 24b are provided on the front and back of the resin case 21.

[0046] Next, the operation of the wire harness 11 configured as above will be described. The first shielded electric wire 12 has a first electromagnetic shield member 12c that covers the outer periphery of the first core wire 12a via the inner insulating coating 12b, thereby suppressing radiation of electromagnetic waves from the first shielded electric wire 12. Furthermore, the second shielded electric wires 13, 14 have second electromagnetic shield members 13c, 14c that cover the outer periphery of the second core wires 13a, 14a via the inner insulating coatings 13b, 14b, thereby suppressing radiation of electromagnetic waves from the second shielded electric wires 13, 14. Furthermore, the connection portion 16 is covered by the shield connecting member 31 that is connected to the first electromagnetic shield member 12c and the second electromagnetic shield members 13c, 14c via the resin case 21, thereby suppressing radiation of electromagnetic waves from around the connection portion 16.

[0047] Next, the effects of the first embodiment will be described below. (1) The two second electromagnetic shield members 13c, 14c are connected together to the shield connecting member 31 by the bundling crimping ring 33. This allows for a smaller number of components than, for example, a configuration in which each of the two second electromagnetic shield members 13c, 14c is connected to the shield connecting member 31 by multiple crimping rings or the like. Furthermore, the spacer portion 24 interposed between the two second shield electric wires 13, 14 is suppressed from deformation. This allows for a good connection between the two second electromagnetic shield members 13c, 14c and the shield connecting member 31. That is, for example, in a configuration without the spacer portion 24, the two second shield electric wires 13, 14 may bend toward each other or otherwise deform, which could result in a decrease in the surface pressure between the second electromagnetic shield members 13c, 14c and the shield connecting member 31 and an unstable connection. In contrast, the spacer portion 24 suppresses deformation of the two second shielded electric wires 13, 14, thereby enabling a good connection between the two second electromagnetic shield members 13c, 14c and the shield connecting member 31. Furthermore, because the spacer portion 24 is provided in the resin case 21, the number of parts can be reduced compared to, for example, a case in which the spacer portion 24 is provided separately from the resin case 21.

[0048] (2) The spacer portion 24 has the arc portion 24a that follows the outer periphery of the second shielded electric wires 13 and 14, and therefore, the second shielded electric wires 13 and 14 can be effectively prevented from being deformed in a crushing manner.

[0049] (3) The folded portions 13e, 14e of the second electromagnetic shield members 13c, 14c, which are arranged to cover the outer peripheries of the outer insulating coatings 13d, 14d, are bound together with the shield connecting member 31 by the bundling crimping ring 33. Therefore, for example, compared to when the second electromagnetic shield members 13c, 14c are not folded back to cover the outer peripheries of the outer insulating coatings 13d, 14d, the second electromagnetic shield members 13c, 14c can come into contact with the shield connecting member 31 over a wider area.

[0050] (4) The underlay ring 15 is disposed between the outer insulating coatings 13d, 14d and the folded-back portions 13e, 14e. Therefore, the underlay ring 15 and the bundling crimping ring 33 stably sandwich the folded-back portions 13e, 14e and the shield connecting member 31, thereby achieving a good connection.

[0051] (5) The resin case 21 has a band restricting portion 24b that can engage with the bundling crimping ring 33 to restrict displacement of the bundling crimping ring 33 along the longitudinal direction of the second shielded electric wires 13, 14. Therefore, the band restricting portion 24b restricts displacement of the bundling crimping ring 33 along the longitudinal direction of the second shielded electric wires 13, 14, so that the connection state between the two second electromagnetic shield members 13c, 14c and the shield connecting member 31 can be stably maintained.

[0052] (6) The resin case 21 has a first separate case 22 and a second separate case 23 that are assembled to sandwich the connection portion 16. Therefore, the outer periphery of the connection portion 16 can be easily covered by the first separate case 22 and the second separate case 23.

[0053] (7) The first separate case 22 and the second separate case 23 have the same shape. Therefore, only one type of mold is required to manufacture the first separate case 22 and the second separate case 23, which simplifies manufacturing. In addition, parts management of the first separate case 22 and the second separate case 23 is easy.

[0054] (8) The first separate case 22 and the second separate case 23 have locking portions 22d, 22e, 23d, and 23e that lock together on both sides in the width direction, which is the direction in which the two second shielded electric wires 13 and 14 are arranged. Therefore, both sides in the width direction of the resin case 21 can be locked in a balanced manner by the locking portions 22d, 22e, 23d, and 23e.

[0055] (9) This is applicable to the wire harness 11 including the first shielded electric wire 12 and the second shielded electric wires 13, 14 that extend in opposite directions from the connection portion 16. In this embodiment, the number of parts can be reduced on the side where the two second shielded electric wires 13, 14 are arranged, and the two second electromagnetic shield members 13c, 14c and the shield connecting member 31 can be well connected.

[0056] (10) The waterproof member 34 can collectively prevent the resin case 21, the folded portions 12e, 13e, 14e, the shield connecting member 31, the crimping ring 32, and the bundling crimping ring 33 from being wet.

[0057] (Second embodiment) The wire harness 41 of the second embodiment has a configuration that is partially different from the configuration of the wire harness 11 of the first embodiment, and therefore, the same components are denoted by the same reference numerals and detailed description thereof will be omitted.

[0058] (Wire harness 41 (Configuration of 8 to 10, the wire harness 41 includes one first shielded electric wire 12, two second shielded electric wires 13 and 14, an underlay ring 15 (see FIGS. 9 and 10), and a connection terminal 42. 41The shielding device includes a resin case 51, a shield connecting member 31, a crimping ring 32 (see FIG. 9), a crimping bundling ring 33 (see FIG. 10) as a cable tie, and a waterproofing member .

[0059] In this embodiment, the first core wire 12a and the second core wires 13a, 14a are connected via a connection terminal 42. In this embodiment, a connection portion 43 is formed by the connection terminal 42 and the first core wire 12a and the second core wires 13a, 14a connected to the connection terminal 42. The first shielded electric wire 12 and the second shielded electric wires 13, 14 extend in opposite directions from each other with the connection portion 43 as a base point.

[0060] (Configuration of resin case 51) 11, resin case 51 is formed in the shape of a flat box that can cover the outer periphery of connection portion 43. Resin case 51 is made up of first separate case 52 and second separate case 53 that are assembled to sandwich connection portion 43. Resin case 51, i.e., first separate case 52 and second separate case 53, can be made of a material such as a synthetic resin, such as polypropylene, polyamide, or polyacetal.

[0061] 11 and 12, the first separate case 52 and the second separate case 53 have semicircular openings 52a, 52b, 52c, 53a, 53b, and 53c, each having a semicircular arc shape, that are arranged at positions sandwiching the exposed inner insulating coatings 12b, 13b, and 14b, respectively. 52 and second split case 53 The first separate case has through holes 52d and 53d between the two second shielded electric wires 13 and 14, and has intermediate locking portions 52e and 53e that lock together on the inner walls of the through holes 52d and 53d. 52 The intermediate locking portion 52e is a female locking portion. 53 The intermediate locking portion 53e is a male locking portion. The first separate case 52 has a positioning recess 52f on a portion of the surface facing the second separate case 53. The second separate case 53 has a positioning protrusion 53f on a portion of the surface facing the first separate case 52. First separate case52 and second split case 53 The positioning protrusions 53f fit into the positioning recesses 52f, and the intermediate locking portions 52e, 53e fit into each other, so that the locking members are locked to each other.

[0062] 10 and 14, the resin case 51 has a spacer portion 54. The spacer portion 54 is interposed between the two second shielded electric wires 13, 14 inside the bundling crimping ring 33, thereby suppressing deformation of the second shielded electric wires 13, 14.

[0063] In detail, as shown in FIG. 12, the spacer portion 54 is composed of a first separate spacer portion 52g provided in the first separate case 52 and a second separate spacer portion 53g provided in the second separate case 53.

[0064] 14, the spacer portion 54 has an arc portion 54a that follows the outer periphery of the second shielded electric wires 13 and 14. More specifically, the arc portion 54a is formed in an arc shape that follows the outer periphery of the folded-back portions 13e and 14e. When viewed in the longitudinal direction of the second shielded electric wires 13 and 14, the arc portion 54a is formed as a pair so as to fill almost the entire space between the opposing folded-back portions 13e and 14e.

[0065] 13 and 14 , the resin case 51 has band restraining portions 54b that can engage with the bundling crimping ring 33 to restrict misalignment of the bundling crimping ring 33 along the longitudinal direction of the second shielded electric wires 13 and 14. The band restraining portions 54b protrude from the spacer portion 54. A pair of band restraining portions 54b is provided in the longitudinal direction of the second shielded electric wires 13 and 14, and the bundling crimping ring 33 is disposed between the pair of band restraining portions 54b, thereby restricting misalignment of the bundling crimping ring 33 along the longitudinal direction of the second shielded electric wires 13 and 14. The band restraining portions 54b are provided on each of the first separate case 52 and the second separate case 53. That is, the band restraining portions 54b are provided on the front and back of the resin case 51.

[0066] Next, the effects of the second embodiment will be described below. The wire harness 41 of the second embodiment can obtain the same effects as the effects (1) to (6), (9), and (10) of the first embodiment.

[0067] (11) First split case 52 and second split case 53 has intermediate locking portions 52e, 53e that lock the two second shielded electric wires 13, 14 together between them. Therefore, the space between the two second shielded electric wires 13, 14 can be effectively utilized by the intermediate locking portions 52e, 53e.

[0068] The above embodiment can be modified as follows: The above embodiment and the following modifications can be combined with each other within the scope of technical compatibility. In the above embodiment, the wire harnesses 11, 41 are provided with the waterproof member 34 that collectively covers the resin case 21, the folded portions 12e, 13e, 14e, the shield connecting member 31, etc., but this is not limited thereto and the wire harnesses 11, 41 may not be provided with the waterproof member 34. Furthermore, the waterproof member 34 may have another configuration having a similar function, and for example, may be a waterproof member having a cylindrical resin pipe and a rubber stopper, or may be a waterproof member made of a shrink tube or the like.

[0069] 15 , the wire harness 11 may not include the waterproof member 34, but may include a connection portion waterproof member 61 that covers the connection portion 16 inside the resin case 21, while the shield connecting member 31, the crimping ring 32, the bundling crimping ring 33, etc. are exposed. The connection portion waterproof member 61 is a non-conductive molded resin. More specifically, the connection portion waterproof member 61 is a molded resin that is provided so as to cover the outer periphery of the connection portion 16 and fill gaps inside the resin case 21 with a non-conductive resin material.

[0070] Even in this case, the connection portion waterproofing member 61 can prevent the connection portion 16 from getting wet. Furthermore, compared to a configuration including the waterproofing member 34 that collectively covers the shield connecting member 31 and the like, for example, the size can be reduced. Furthermore, for example, the size reduction can lead to a reduction in material and manufacturing costs. Note that the wire harness 11 including the waterproofing member 34 and the wire harness 11 including the connection portion waterproofing member 61 can be provided as two types of products with different waterproof types, for example, in response to user requests.

[0071] In the above embodiment, the wire harness 11, 41 is provided with an underlay ring 15 arranged between the outer insulating coating 13d, 14d and the folded-back portion 13e, 14e, but this is not limited thereto, and the wire harness 11, 41 may not be provided with an underlay ring 15.

[0072] 16, the folded portions 13e, 14e may be bound by a bundling crimping ring 33 while in contact with the outer peripheral surfaces of the outer insulating coatings 13d, 14d. In this way, the number of parts can be reduced compared to a configuration in which, for example, an underlay ring 15 is provided inside the folded portions 13e, 14e.

[0073] In the above embodiment, the spacer portions 24, 54 have the arc portions 24a, 54a that follow the outer periphery of the second shielded electric wires 13, 14, but this is not limited thereto, and the spacer portions 24a, 54a may not be provided.

[0074] In the above embodiment, the second electromagnetic shield members 13c, 14c have the folded portions 13e, 14e arranged to cover the outer peripheries of the outer insulating coatings 13d, 14d, but this is not limitative and the second electromagnetic shield members 13c, 14c may be configured without the folded portions 13e, 14e. In this case, for example, the second electromagnetic shield members 13c, 14c may be bound together with the shield connecting member 31 by the bundling crimping ring 33 while in contact with the outer peripheries of the inner insulating coatings 13b, 14b.

[0075] In the above embodiment, the resin cases 21, 51 have the band restriction portions 24b, 54b that can engage with the bundling crimping ring 33, but this is not limitative and the resin cases 21, 51 may be configured without the band restriction portions 24b, 54b. Furthermore, the position, shape, and number of the band restriction portions 24b, 54b may be changed as long as they can restrict the displacement of the bundling crimping ring 33 along the longitudinal direction of the second shielded electric wires 13, 14.

[0076] In the above embodiment, the resin case 21, 51 has a first separate case 22, 52 and a second separate case 23, 53, but is not limited to this. For example, the resin case may be modified to one in which the first separate section and the second separate section are integrally molded via a thin hinge section. Furthermore, the resin case 21, 51 may be composed of three or more separate cases.

[0077] In the above embodiment, the wire harness 11 includes one first shielded electric wire 12 and two second shielded electric wires 13, 14, but the present invention is not limited to this and the number of the first shielded electric wires 12 and the second shielded electric wires 13, 14 may be changed. Also, for example, a configuration may be possible in which a plurality of second shielded electric wires 13, 14 extend in the same direction from the connection portions 16, 43, but no first shielded electric wire 12 extends in the opposite direction to the plurality of second shielded electric wires 13, 14.

[0078] In the above embodiment, the first electromagnetic shield member 12c and the second electromagnetic shield members 13c, 14c are braided wires in which wires are woven into a cylindrical shape, but this is not limited to this and they may be made of, for example, metal foil made of an aluminum alloy or other material.

[0079] In the above embodiment, the shield connecting member 31 is a braided wire in which element wires are woven into a cylindrical shape, but this is not limited thereto and may be, for example, a metal foil made of an aluminum alloy or the like. The shield connecting member 31 may also be configured so that it can be disposed from the outside of the resin case 21, 51. For example, the shield connecting member 31 may be a braided wire in which element wires are woven into a sheet shape, and may be disposed so as to cover the outer periphery of the resin case 21, 51 by being wound around the resin case 21, 51 from the outside.

[0080] In the above embodiment, the cable tie is a metal tubular caulking ring 33, but other cable ties may be used as long as they can bind and connect the second electromagnetic shield members 13c, 14c and the shield connecting member 31 together. For example, a resin cable tie may be used that can bind multiple second electromagnetic shield members 13c, 14c and the shield connecting member 31 together.

[0081] (Reference example) The resin cases 21, 51 may have the band restricting portions 24b, 54b engageable with the bundling crimping ring 33, but may not have the spacer portions 24, 54 that suppress deformation of the second shielded electric wires 13, 14.

[0082] The technical ideas that can be understood from the above are described below. (a) A wire harness comprising: a plurality of shielded electric wires each having a core wire and an electromagnetic shielding member covering the outer periphery of the core wire; a connection portion at which the core wires are connected to each other; a resin case covering the outer periphery of the connection portion; a shield connecting member covering the outer periphery of the resin case and connecting the plurality of electromagnetic shielding members; and cable ties that bundle the plurality of shielded electric wires and connect the electromagnetic shielding member of each of the plurality of shielded electric wires to the shield connecting member, wherein the resin case has a band restricting portion that can engage with the cable ties to restrict shifting of the cable ties along the longitudinal direction of the shielded electric wires.

[0083] According to this configuration, the shield connecting member covers the connection portion, thereby suppressing electromagnetic wave radiation from the periphery of the connection portion. Furthermore, because the multiple electromagnetic shielding members are connected together to the shield connecting member with cable ties, the number of parts can be reduced compared to, for example, a configuration in which multiple electromagnetic shielding members are each connected to the shield connecting member with multiple cable ties. Furthermore, the band restricting portion restricts the cable ties from shifting along the longitudinal direction of the shielded electric wire, thereby stably maintaining the connection state between the multiple electromagnetic shielding members and the shield connecting member. Furthermore, because the band restricting portion is provided in the resin case, the number of parts can be reduced compared to, for example, a configuration in which the band restricting portion is provided separately from the resin case.

[0084] That is, while a configuration in which the electromagnetic shielding members are simply connected directly to each other on the outside of the connection portion has the problem of being difficult to achieve a good connection while adequately covering the entire periphery of the connection portion, this simple configuration can stably maintain the connection state of the electromagnetic shielding members and effectively suppress electromagnetic wave radiation from around the connection portion. [Explanation of symbols]

[0085] 11 Wire harness 12 First shielded wire (shielded wire) 12a First core wire (core wire) 12b Inner insulating coating 12c First electromagnetic shield member (electromagnetic shield member) 12d Outer insulation coating 12e Folded part 13 Second shielded wire (shielded wire) 13a Second core wire (core wire) 13b Inner insulating coating 13c Second electromagnetic shielding member (electromagnetic shielding member) 13d Outer insulation coating 13e Folded part 14 Second shielded wire (shielded wire) 14a Second core wire (core wire) 14b Inner insulating coating 14c Second electromagnetic shielding member (electromagnetic shielding member) 14d Outer insulation coating 14e Folded part 15 Underlay Ring 16 Connection 21 Resin case 22 First Separate Case 22a Semicircular opening 22b Semicircular opening 22c semicircular opening 22d Locking part 22e Locking part 22f First divided spacer part 23 Second Separate Case 23a Semicircular opening 23b Semicircular opening 23c Semicircular opening 23d Locking part 23e Locking part 23f Second split spacer part 24 Spacer part 24a Arc section 24b Band Regulation Section 31 Shield connecting member 32 Crimping ring 33 Cable tie crimping ring (cable tie) 33a Semicircular arc section 33b Connection part 34 Waterproofing materials 41 Wire harness 42 Connection terminal 43 Connection 51 Resin case 52 First Separate Case 52a Semicircular opening 52b Semicircular opening 52c Semicircular opening 52d through hole 52e Intermediate locking part 52f Positioning recess 52g First divided spacer part 53 Second Separate Case 53a Semicircular opening 53b Semicircular opening 53c Semicircular opening 53d through hole 53e Intermediate locking portion 53f Positioning protrusion 53g Second split spacer part 54 Spacer part 54a Arc section 54b Band Regulation Section 61 Waterproofing material for connection

Claims

1. a plurality of shielded electric wires each having a core wire and an electromagnetic shield member covering the outer periphery of the core wire; a connection portion at which the core wires are connected to each other; a resin case covering the outer periphery of the connection portion; a shield connecting member that covers the outer periphery of the resin case and to which the plurality of electromagnetic shield members are connected; a binding band that ties together the electromagnetic shielding members and the shield connecting members of the plurality of shielded electric wires while bundling the plurality of shielded electric wires, the resin case has a spacer portion that is interposed between the plurality of shielded electric wires inside the cable tie to suppress deformation of the plurality of shielded electric wires. Wire harness.

2. The spacer portion has an arc portion that follows the outer periphery of the shielded electric wire. The wire harness according to claim 1 .

3. the shielded wire has an outer insulating coating that covers the outer periphery of the electromagnetic shielding member, the electromagnetic shielding member has a folded portion that is folded back from the inside to the outside of the outer insulating coating and is arranged to cover the outer periphery of the outer insulating coating, The binding band binds the folded-back portion and the shield connecting member together. The wire harness according to claim 1 .

4. an underlay ring disposed between the outer insulating coating and the folded portion; The wire harness according to claim 3 .

5. The folded portion is bound by the binding band in a state of contacting the outer peripheral surface of the outer insulating coating. The wire harness according to claim 3 .

6. the resin case has a band restraining portion engageable with the cable tie to restrain displacement of the cable tie along the longitudinal direction of the shielded electric wire; The wire harness according to claim 1 .

7. the resin case has a first separate case and a second separate case assembled to sandwich the connection portion; The wire harness according to claim 1 .

8. The first separate case and the second separate case have the same shape. The wire harness according to claim 7.

9. The first separate case and the second separate case have locking portions for locking each other on both sides in a width direction, which is a direction in which the plurality of shielded electric wires bundled by the cable tie are arranged. The wire harness according to claim 7.

10. the first separate case and the second separate case have intermediate locking portions that lock the shielded electric wires together between the plurality of shielded electric wires bundled by the cable tie; The wire harness according to claim 7.

11. the plurality of shielded electric wires include a first shielded electric wire and a second shielded electric wire extending in opposite directions from the connection portion; At least one of the first shielded electric wire and the second shielded electric wire is provided in plurality, and the one of the first shielded electric wire and the second shielded electric wire is bundled by the cable tie. The wire harness according to claim 1 .

12. a waterproof member that collectively covers the resin case, the electromagnetic shield member, the shield connecting member, and the cable tie; The wire harness according to claim 1 .

13. a connection portion waterproofing member that covers the connection portion within the resin case; The shield connecting member and the cable tie are exposed. The wire harness according to claim 1 .

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