Wire harness

Abstract

To provide a wire harness capable of securing high waterproofness even under a high-temperature environment.SOLUTION: A wire harness 11 comprises a first shield wire 12 and second shield wires 13 and 14. The wire harness 11 includes: a core wire connection part 16 to which a first core wire 12a and second core wires 13a and 14a are connected; an internal heat-shrinkable tube 21 covering an outer periphery of the core wire connection part 16; a shield coupling member 31 to which a first shield member 12c and second shield members 13c and 14c are connected while covering an outer periphery of the internal heat-shrinkable tube 21; a heat-shrinkable tube 34 where an adhesive agent 37 is provided inside while covering an outer periphery of the shield coupling member 31; and a spacer 35 which encapsulates the adhesive agent 37 in the heat-shrinkable tube 34 while being interposed between the adjacent two second shield wires 13 and 14.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] Conventionally, some wire harnesses have a connection part where the core wires of a plurality of electric wires are connected to each other (for example, see Patent Document 1). In this wire harness, the connection part is covered with a waterproof part made of a resin material, thereby ensuring waterproofness of the connection part. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-34189 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, a shielded electric wire may be used as the electric wire of the above-mentioned wire harness. The shielded electric wire has a shielding member such as a braided wire that covers the outer periphery of the core wire via an insulating coating, thereby suppressing the radiation of electromagnetic waves. In such a case, it is possible to ensure waterproofing by covering the outer periphery of the shield connection part where the shielding members are connected with an exterior part such as a heat shrink tube and using an adhesive provided inside the exterior part. In this way, it is possible to reduce the size and cost of the wire harness. However, when an adhesive is used in this way, there is a risk that the adhesive will melt out of the exterior part between two adjacent shielded electric wires in a high-temperature environment. Therefore, there is a risk that the waterproofing will be reduced.

[0005] An object of the present disclosure is to provide a wire harness that can ensure high waterproofing even in a high-temperature environment. [Means for solving the problem]

[0006] A wire harness according to the present disclosure is a wire harness including a plurality of shielded electric wires, each of which has a core wire, an insulating coating covering an outer periphery of the core wire, and a shielding member covering the outer periphery of the insulating coating. The wire harness includes a core wire connection portion at which the core wires are connected to each other, an insulating portion covering the outer periphery of the core wire connection portion, a shield connection portion at which the shielding members are connected to each other while covering the outer periphery of the insulating portion, an exterior portion covering the outer periphery of the shield connection portion and having an adhesive provided on the inside, and a spacer interposed between two adjacent shielded electric wires among the plurality of shielded electric wires and sealing the adhesive in the exterior portion. Effect of the Invention

[0007] According to the wire harness of the present disclosure, high waterproof performance can be ensured even in a high temperature environment. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a cross-sectional view of a wire harness according to an embodiment. [Diagram 2] FIG. 2 is a partially enlarged cross-sectional view of the wire harness according to the embodiment. [Diagram 3] FIG. 3 is a partially enlarged cross-sectional view of the wire harness according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. [Diagram 5] FIG. 5 is a partially enlarged perspective view of a manufacturing process of the wire harness in one embodiment. [Figure 6] FIG. 6 is a plan view of a manufacturing process of the wire harness in one embodiment. [Figure 7] FIG. 7 is a plan view of a manufacturing process of the wire harness in one embodiment. [Figure 8] FIG. 8 is a plan view of a manufacturing process of the wire harness in one embodiment. [Figure 9] FIG. 9 is a plan view of a manufacturing process of the wire harness in one embodiment. [Figure 10] FIG. 10 is a plan view of the wire harness according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Description of the embodiments of the present disclosure] First, the embodiments of the present disclosure will be listed and described. The wire harness of the present disclosure includes: [1] A wire harness including a plurality of shielded electric wires, each of the shielded electric wires having a core wire, an insulating coating covering an outer periphery of the core wire, and a shielding member covering the outer periphery of the insulating coating, the wire harness including a core wire connection portion at which the core wires are connected to each other, an insulating portion covering the outer periphery of the core wire connection portion, a shield connection portion at which the shielding members are connected to each other while covering the outer periphery of the insulating portion, an exterior portion covering the outer periphery of the shield connection portion and having an adhesive provided on the inside, and a spacer interposed between two adjacent shielded electric wires of the plurality of shielded electric wires and sealing the adhesive in the exterior portion.

[0010] According to this configuration, the spacer prevents the adhesive from seeping out from between the two adjacent shielded wires to the outside of the exterior, thereby ensuring high waterproofing even in a high-temperature environment.

[0011] [2] In the above item [1], the spacer may be formed so as to be able to come into surface contact with an outer peripheral surface of the shielded electric wire. According to this configuration, the spacer is in surface contact with the outer peripheral surface of the shielded electric wire, so that the gap between two adjacent shielded electric wires can be made smaller than when there is no surface contact, and therefore, the adhesive is further prevented from dissolving out of the exterior portion.

[0012] [3] In the above [2], the shielded electric wire may have an outer insulating coating having a circular outer periphery that covers the outer periphery of the shielding member, and the spacer may have an arcuate surface that follows the outer periphery of the outer insulating coating.

[0013] According to this configuration, the arc surface of the spacer comes into surface contact with the outer peripheral surface of the outer insulating coating of the shielded electric wire, thereby making it possible to reduce the gap between two adjacent shielded electric wires, thereby further preventing the adhesive from dissolving out of the exterior.

[0014] [4] In any one of the above [1] to [3], the spacer may have a flat surface that connects the two adjacent shielded wires over the shortest distance while sealing the adhesive in the exterior portion.

[0015] According to this configuration, the flat surfaces of the spacer connect two adjacent shielded electric wires at the shortest distance, while preventing the adhesive from melting out of the exterior portion. [5] In any one of the above [1] to [4], the spacer may be provided at an opening end of the exterior portion to seal the adhesive inside the exterior portion.

[0016] According to this configuration, the spacer provided at the open end of the exterior portion prevents the adhesive from seeping out of the exterior portion. [6] In the above item [5], the spacer may be provided so that a portion of the spacer protrudes outward from an open end of the exterior portion.

[0017] According to this configuration, since a part of the spacer protrudes outward from the open end of the exterior part, for example, it is possible to visually confirm whether the spacer is properly positioned. In other words, if the part of the spacer protruding from the open end of the exterior part is tilted, it is possible to visually confirm that the product is defective.

[0018] [7] In any one of [1] to [6] above, the two adjacent shielded wires may be positioned so as to be entirely separated at a location where the spacer is arranged, and the spacer interposed between the two adjacent shielded wires may be a single component.

[0019] According to this configuration, the number of parts can be reduced compared to when the spacer interposed between two adjacent shielded wires is divided into multiple pieces. [8] In any one of the above [1] to [7], the wire harness may include a tape member wrapped around a portion including the entire periphery of the opening end of the exterior portion.

[0020] According to this configuration, the tape member wrapped around an area including the entire circumference of the open end of the exterior portion prevents the adhesive from seeping out of the exterior portion from between the shielded wire and the exterior portion in areas other than where the spacer is positioned.

[0021] [9] In the above [8], the spacer may be arranged so that a portion of it protrudes outward from the opening end of the exterior portion, and the tape member may also be wrapped around the spacer protruding outward from the opening end of the exterior portion.

[0022] According to this configuration, the tape member that is also wrapped around the spacer that protrudes outward from the open end of the exterior portion prevents the adhesive from seeping out from between the spacer and the exterior portion.

[0023] [Details of the embodiment of the present disclosure] 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. In addition, the dimensional ratio of each part may differ in each drawing. In this specification, "parallel," "orthogonal," and "perfect circle" do not only mean strictly parallel, orthogonal, or perfect circle, but also include approximately parallel, orthogonal, or perfect circle within the range of the action and effect of this embodiment. Note that the present invention is not limited to these examples, but is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0024] (Configuration of wire harness 11) 1, the wire harness 11 includes a 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 an inner heat shrinkable tube 21 as an insulating part, a shield connecting member 31, a crimping ring 32 (see FIG. 2), a bundling crimping ring 33 (see FIG. 3), a heat shrinkable tube 34 as an exterior part, a spacer 35, and a tape member 36.

[0025] (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 insulating coating 12b covering 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 shield member 12c as a shield member covering the outer periphery of the insulating coating 12b, and an outer insulating coating 12d covering the outer periphery of the first shield member 12c.

[0026] As shown in Fig. 3, the second shielded electric wires 13, 14 have second core wires 13a, 14a as core wires and insulating coatings 13b, 14b covering the outer peripheries of the second core wires 13a, 14a. The cross-sectional shape of the second core wires 13a, 14a is circular. The second shielded electric wires 13, 14 also have second shield members 13c, 14c as shield members covering the outer peripheries of the insulating coatings 13b, 14b, and outer insulating coatings 13d, 14d covering the outer peripheries of the second shield members 13c, 14c.

[0027] The first shielding member 12c and the second shielding members 13c, 14c suppress radiation of electromagnetic waves from the first core wire 12a and the second core wire 13a, 14a. The first shielding member 12c and the second shielding members 13c, 14c of this embodiment are braided wires in which conductive wires such as aluminum alloys are braided into a cylindrical shape. In the drawings, the shapes and appearances of the braided wires in the first shielding member 12c and the second shielding members 13c, 14c are appropriately and typically illustrated.

[0028] At the ends of the first shielded electric wire 12 and the second shielded electric wire 13, 14, the first core wire 12a and the second core wire 13a, 14a are provided so as to be exposed to the outside. At the ends of the first shielded electric wire 12 and the second shielded electric wire 13, 14, the first shield member 12c and the second shield member 13c, 14c are provided so as to be exposed to the outside. The first shield member 12c and the second shield member 13c, 14c have folded-back portions 12e, 13e, 14e that are folded back from the inside to the outside of the outer insulating coating 12d, 13d, 14d and arranged to cover the outer periphery of the outer insulating coating 12d, 13d, 14d. In other words, the first shield member 12c and the second shield member 13c, 14c are formed as folded-back portions 12e, 13e, 14e that are formed by folding back the parts exposed outside the outer insulating coating 12d, 13d, 14d.

[0029] 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 wire 13 and 14. Next, the first shield member 12c and the second shield member 13c and 14c are folded back from the ends of the first shielded electric wire 12 and the second shielded electric wire 13 and 14, and then the insulating coatings 12b, 13b, and 14b are stripped from the ends of the first shielded electric wire 12 and the second shielded electric wire 13 and 14. As a result, the first shield member 12c and the second 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.

[0030] The underlay ring 15 is made of metal and formed into a cylindrical shape. The underlay ring 15 is disposed between the outer insulating coatings 12d, 13d, 14d and the folded-back portions 12e, 13e, 14e. In other words, the underlay ring 15 is disposed on the outer periphery of the outer insulating coatings 12d, 13d, 14d when the first shielding member 12c and the second shielding members 13c, 14c are folded back.

[0031] As shown in FIG. 1, the first core wire 12a and the second core wires 13a and 14a are connected to each other to form a core wire connection section 16. In this embodiment, the first core wire 12a and the second core wires 13a and 14a are directly welded to each other. The first shielded electric wire 12 and the second shielded electric wires 13 and 14 extend in opposite directions from the core wire connection section 16. In detail, the first shielded electric wire 12 and the second shielded electric wires 13 and 14 extend in one direction (leftward in FIG. 1) and two second shielded electric wires 13 and 14 extend in the other direction (rightward in FIG. 1) from the core wire connection section 16. 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 and 14a.

[0032] (Configuration of the inner heat shrink tube 21) The internal heat shrink tube 21 covers the outer circumference of the core wire connection portion 16. The internal heat shrink tube 21 is formed in a cylindrical shape from an insulating resin material that shrinks when heated and hardens when cooled. The internal heat shrink tube 21 is heated and cooled to a shape that shrinks toward the inner member. The internal heat shrink tube 21 is provided so as to cover all of the first core wire 12a and the second core wires 13a and 14a exposed from the insulating coatings 12b, 13b and 14b. The internal heat shrink tube 21 is provided so as to cover the ends of the insulating coatings 12b, 13b and 14b as well.

[0033] (Configuration of shield connecting member 31, crimping ring 32, and bundling crimping ring 33) As shown in FIG. 1, the shield connection member 31 suppresses radiation of electromagnetic waves from between the first shield member 12c and the second shield members 13c, 14c. The shield connection member 31 is connected to the first shield member 12c and the second shield members 13c, 14c while covering the outer periphery of the internal heat shrinkable tube 21. The shield connection member 31 has flexibility. The shield connection member 31 of this embodiment is, for example, a braided wire in which conductive wires such as aluminum alloy are braided into a cylindrical shape. In the drawings, the shape and appearance of the braided wire in the shield connection member 31 are appropriately and typically illustrated. Specifically, in the drawings, the shield connection member 31 is illustrated in a sheet shape with the details of the braided wire omitted. The shield connection member 31 is arranged so as to continuously cover the range from the folded portion 12e of the first shield member 12c (see FIG. 2) to the folded portions 13e, 14e of the second shield members 13c, 14c (see FIG. 3).

[0034] 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 shielding 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 shielding 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 sandwiched and connected between the underlay ring 15 and the crimping ring 32.

[0035] As shown in FIG. 3, 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 shielding members 13c, 14c to the shield connecting member 31. In detail, 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 shielding members 13c, 14c to the shield connecting member 31 by bundling them together. The folded-back portions 13e, 14e and the shield connecting member 31 are sandwiched and connected by the underlay ring 15 and the bundling crimping ring 33. As a result, in this embodiment, the shield connecting member 31 that covers the outer periphery of the internal heat shrink tube 21 and connects the first shielding member 12c and the second shielding members 13c, 14c to each other constitutes a shield connecting portion. In this state, the folded-back portions 13e, 14e of the two adjacent second shielded electric wires 13, 14 are in contact with each other, so that the outer insulating coatings 13d, 14d are entirely disposed apart from each other.

[0036] (Configuration of heat shrink tube 34) 1, the heat shrink tube 34 covers the outer periphery of the shield connecting member 31. The heat shrink tube 34 is formed in a cylindrical shape from an insulating resin material that shrinks when heated and hardens when cooled. The heat shrink tube 34 is heated and cooled to a shape that shrinks toward the inner member. The heat shrink tube 34 is provided so as to cover the entire shield connecting member 31. The heat shrink tube 34 is provided so as to cover also parts of the outer insulating coatings 12d, 13d, and 14d that protrude from the shield connecting member 31 to the outside.

[0037] An adhesive 37 is provided on the inside of the heat shrink tube 34. The adhesive 37 is made of a material that melts when heated and hardens when cooled. The adhesive 37 is illustrated in a schematic manner in FIGS. 1 to 3. Specifically, the adhesive 37 in FIGS. 1 to 3 is illustrated as being provided on the entire inner surface of the heat shrink tube 34 and being melted once by a hot melt ring 41 (described later) and then hardened. The thickness of the adhesive 37 in the actual product is not necessarily uniform due to the pressure applied when the heat shrink tube 34 shrinks, and the adhesive 37 is arranged to fill in small gaps. The adhesive 37 is provided on the entire inner surface of the heat shrink tube 34, and has an intermediate portion 37a (see FIG. 3) that is disposed between two adjacent second shielded electric wires 13 and 14 inside the heat shrink tube 34.

[0038] (Configuration of spacer 35) 3, the spacer 35 is interposed between two adjacent second shielded electric wires 13, 14 and seals the adhesive 37 in the heat shrink tube 34. In other words, the spacer 35 is interposed between two adjacent second shielded electric wires 13, 14, thereby preventing the adhesive 37 from melting out from between the two adjacent second shielded electric wires 13, 14 to the outside of the heat shrink tube 34. That is, the spacer 35 mainly prevents the interposed portion 37a of the adhesive 37 from melting out. The spacer 35 is made of a resin having a higher melting point than the adhesive 37.

[0039] 4 and 5, the spacer 35 is formed to be able to come into surface contact with the outer peripheral surfaces 13f, 14f of the second shielded electric wires 13, 14. More specifically, the spacer 35 has arcuate surfaces 35a that conform to the outer peripheral surfaces 13f, 14f of the outer insulating coatings 13d, 14d of the second shielded electric wires 13, 14. The arcuate surfaces 35a are provided on both sides of the spacer 35 corresponding to the opposing outer insulating coatings 13d, 14d.

[0040] 3, the spacer 35 has a flat surface 35b that connects two adjacent second shielded electric wires 13, 14 at the shortest distance and seals the adhesive 37 inside the heat shrink tube 34. The flat surface 35b receives and prevents the interposed portion 37a of the adhesive 37 from melting out with its flat surface.

[0041] Moreover, the spacer 35 is provided at the open end 34a of the heat shrink tube 34 to seal the adhesive 37 inside the heat shrink tube 34. In other words, the spacer 35 is disposed at a position including the open end 34a of the heat shrink tube 34. In this embodiment, the spacer 35 is provided such that a portion of the spacer 35 protrudes outward from the open end 34a of the heat shrink tube 34.

[0042] The spacer 35 interposed between two adjacent second shielded electric wires 13, 14 is a single component because the two adjacent second shielded electric wires 13, 14 are entirely spaced apart from each other. That is, one spacer 35 is provided for each pair of adjacent second shielded electric wires 13, 14.

[0043] (Configuration of tape member 36) 1, the tape member 36 is wrapped around a portion including the entire circumference of the open end 34a of the heat shrink tube 34. The tape member 36 is an adhesive tape, and is wrapped around the portion including the open end 34a of the heat shrink tube 34 one or more times. Note that in the drawing, only one circumference of the cross section of the tape member 36 is shown as a schematic diagram.

[0044] 4, the tape member 36 is also wrapped around the spacer 35 protruding outward from the open end 34a of the heat shrink tube 34. That is, the spacer 35 has flat upper and lower end faces 35c connecting the two arcuate faces 35a, and the tape member 36 is wrapped around the upper and lower end faces 35c.

[0045] Next, a manufacturing method and an operation of the wire harness 11 configured as above will be described. As shown in FIGS. 6 to 10, the method for manufacturing the wire harness 11 of the present embodiment includes a core wire connecting step, an inner insulation step, a shield connecting step, an outer insulation step, and a tape winding step.

[0046] First, as shown in FIG. 6, in the core wire connecting step, the first core wire 12a and the second core wires 13a, 14a of the first shielded electric wire 12 and the second shielded electric wires 13, 14 are connected to form a core wire connecting portion 16.

[0047] 7, in the internal insulation process, the outside of the core wire connection portion 16 is covered with an internal heat shrink tube 21. More specifically, in the internal insulation process, the unheated internal heat shrink tube 21a is placed on the outside of the core wire connection portion 16, and is heated and cooled, thereby covering the outside of the core wire connection portion 16 with the internal heat shrink tube 21.

[0048] Next, as shown in Fig. 8, in the shield connecting step, the shield connecting member 31 is connected to the folded-back portions 12e, 13e, and 14e (see Fig. 7) of the first shielding member 12c and the second shielding members 13c and 14c. In detail, in the shield connecting step, the shield connecting member 31 is connected to the folded-back portions 12e, 13e, and 14e (see Fig. 7) by the crimping ring 32 and the bundling crimping ring 33 while covering the outside of the internal heat shrinkable tube 21 with the shield connecting member 31.

[0049] In this state (see FIGS. 5 and 8), a spacer 35 is disposed between the two adjacent second shielded electric wires 13, 14 outside the shield connecting member 31. In this embodiment, a hot melt ring 41 is disposed on the second shielded electric wire 13 outside the shield connecting member 31 in this state. The hot melt ring 41 is made of a material that melts when heated and hardens when cooled, and constitutes a part of the adhesive 37. That is, the hot melt ring 41 is intended to supplement the amount of adhesive 37 inside the heat shrink tube 34, and in this embodiment, it is disposed around the outer periphery of one of the two second shielded electric wires 13, 14.

[0050] 9, in the external insulation process, the outside of the shield connecting member 31 is covered with a heat shrink tube 34. More specifically, in the external insulation process, the heat shrink tube 34b before heating is placed on the outside of the shield connecting member 31 and heated and cooled, thereby covering the outside of the shield connecting member 31 with the heat shrink tube 34. Also, in the external insulation process, the adhesive provided on the entire inner surface of the heat shrink tube 34b before heating and the hot melt ring 41 are heated and cooled, so that the adhesive 37 (see FIGS. 1 to 3) is provided on the inside of the heat shrink tube 34.

[0051] 10, in the tape winding process, a tape member 36 is wound around a portion including the entire circumference of the open end 34a of the heat shrink tube 34. At this time, the tape member 36 is also wound around the spacer 35 protruding outward from the open end 34a of the heat shrink tube 34.

[0052] This completes the manufacture of the wire harness 11. In the wire harness 11 configured in this manner, even if the adhesive 37 melts in a high-temperature environment, the spacer 35 and the tape member 36 prevent the adhesive 37 from melting to the outside.

[0053] Next, the effects of the above embodiment will be described below. (1) The spacer 35 is disposed between two adjacent second shielded electric wires 13, 14 and seals the adhesive 37 in the heat shrink tube 34. Therefore, the spacer 35 prevents the adhesive 37 from dissolving out of the heat shrink tube 34 from between the two adjacent second shielded electric wires 13, 14. Therefore, the wire harness 11 can ensure high waterproofing even in a high-temperature environment.

[0054] (2) The spacer 35 comes into surface contact with the outer peripheral surfaces 13f, 14f of the second shielded electric wires 13, 14, thereby making it possible to reduce the gap between the two adjacent second shielded electric wires 13, 14, compared to the case where there is no surface contact. More specifically, the arcuate surface 35a of the spacer 35 comes into surface contact with the outer peripheral surfaces 13f, 14f of the outer insulating coatings 13d, 14d of the second shielded electric wires 13, 14, thereby making it possible to reduce the gap between the two adjacent second shielded electric wires 13, 14. This further prevents the adhesive 37 from dissolving out of the heat shrink tube 34.

[0055] (3) The flat surface 35b of the spacer 35 connects the two adjacent second shielded electric wires 13, 14 at the shortest distance, while preventing the adhesive 37 from melting out of the heat shrink tube 34.

[0056] (4) The spacer 35 provided at the open end 34a of the heat shrink tube 34 prevents the adhesive 37 from melting out of the heat shrink tube 34. More specifically, the spacer 35 disposed at a position including the open end 34a of the heat shrink tube 34 prevents the adhesive 37 from melting out of the heat shrink tube 34.

[0057] (5) Since a part of the spacer 35 protrudes outward from the open end 34a of the heat shrink tube 34, for example, it is possible to visually confirm the correct arrangement of the spacer 35. That is, for example, when the heat shrink tube 34 is provided by heating and cooling, if the part of the spacer 35 protruding from the open end 34a of the heat shrink tube 34 is tilted, it is possible to visually confirm that the product is defective.

[0058] (6) The two adjacent second shielded electric wires 13, 14 are arranged so that the entirety of the wires is separated from each other at the location where the spacer 35 is arranged. The spacer 35 interposed between the two adjacent second shielded electric wires 13, 14 is a single component. Therefore, the number of components can be reduced compared to when the spacer 35 interposed between the two adjacent second shielded electric wires 13, 14 is divided into multiple components. In other words, when parts of the outer circumferential surfaces 13f, 14f of the two adjacent second shielded electric wires 13, 14 are in contact with each other, the spacer 35 is divided into two components. However, since the spacer 35 is a single component, the number of components can be reduced.

[0059] (7) The tape member 36 wrapped around the entire circumference of the open end 34a of the heat shrink tube 34 prevents the adhesive 37 from melting out from between the second shielded wires 13, 14 and the heat shrink tube 34 in areas other than where the spacer 35 is positioned.

[0060] (8) The tape member 36 that is also wrapped around the spacer 35 protruding outward from the open end 34a of the heat shrink tube 34 prevents the adhesive 37 from leaking out of the heat shrink tube 34 from between the spacer 35 and the heat shrink tube 34.

[0061] The above embodiment can be modified as follows: The above embodiment and the following modifications can be combined with each other to the extent that no technical contradiction occurs. In the above embodiment, the spacer 35 has the arcuate surface 35a for surface contact with the outer circumferential surfaces 13f, 14f of the second shielded electric wires 13, 14, but is not limited thereto and may have a configuration without the arcuate surface 35a. For example, the arcuate surface 35a may be a surface formed by combining flat surfaces. In this way, although the gap between the two adjacent second shielded electric wires 13, 14 becomes somewhat larger, the adhesive 37 is prevented from leaking out of the heat shrink tube 34 from between the two adjacent second shielded electric wires 13, 14.

[0062] In the above embodiment, the spacer 35 has the flat surface 35b that connects the two adjacent second shielded electric wires 13, 14 over the shortest distance while sealing the adhesive 37 inside the heat shrink tube 34. However, this is not limited to this, and the flat surface 35b may be, for example, a curved surface.

[0063] In the above embodiment, the spacer 35 is provided at the open end 34a of the heat shrink tube 34, but this is not limited thereto, and the spacer 35 may be provided inside the heat shrink tube 34 not including the open end 34a.

[0064] In the above embodiment, the spacer 35 is arranged so that a portion of it protrudes outward from the open end 34a of the heat shrink tube 34, but this is not limited to this and the spacer 35 may be arranged so that it does not protrude outward.

[0065] In the above embodiment, the two adjacent second shielded electric wires 13, 14 are arranged so as to be entirely separated from each other at the portion where the spacer 35 is arranged, but this is not limited thereto, and the outer circumferential surfaces 13f, 14f may be arranged so as to be in contact with each other. In this case, the spacer 35 is divided into two parts.

[0066] In the above embodiment, the wire harness 11 includes the tape member 36 wrapped around an area including the entire circumference of the open end 34a of the heat shrink tube 34, but the present invention is not limited to this and may be configured without including the tape member 36.

[0067] In the above embodiment, the tape member 36 is also wrapped around the spacer 35 protruding outward from the open end 34a of the heat shrink tube 34, but this is not limited to this and the tape member 36 may not be wrapped around the spacer 35.

[0068] In the above embodiment, the shield connecting member 31 constitutes the shield connecting portion, but this is not limited to the above. For example, the first shielding member 12c and the second shielding members 13c and 14c may be directly connected to each other, and the connection site may serve as the shield connecting portion.

[0069] In the above embodiment, the exterior part that covers the outer periphery of the shield connecting member 31 and has the adhesive 37 provided on the inside is the heat shrink tube 34, but this is not limited to this and may be changed to another exterior part other than the heat shrink tube 34.

[0070] In the above embodiment, the insulating part covering the outer periphery of the core wire connection part 16 is the internal heat shrink tube 21, but this is not limited to this and may be changed to another insulating part other than the internal heat shrink tube 21.

[0071] In the above embodiment, the first core wire 12a and the second core wires 13a, 14a are directly welded to each other, but this is not limited to the above. For example, the first core wire 12a and the second core wires 13a, 14a may be connected to each other using a separate member.

[0072] In the above embodiment, the adhesive 37 provided on the inside of the heat shrink tube 34 is composed of the adhesive provided on the entire inner surface of the heat shrink tube 34b before heating and the hot melt ring 41, but this is not limited to the above. For example, in the above embodiment, the hot melt ring 41 is arranged on the outer periphery of one of the two second shielded electric wires 13, 14 in the manufacturing method of the wire harness 11, but this may be changed depending on the required amount. For example, in the manufacturing method of the wire harness 11, the hot melt ring 41 may be arranged on the outer periphery of each of the two second shielded electric wires 13, 14. Also, for example, in the manufacturing method of the wire harness 11, the hot melt ring 41 may not be arranged.

[0073] In the above embodiment, the wire harness 11 includes one first shielded electric wire 12 and two second shielded electric wires 13, 14. However, the present invention is not limited to this, and the number of the first shielded electric wires 12 and the number of the second shielded electric wires 13, 14 may be changed.

[0074] In the above embodiment, one spacer 35 is provided for the two second shielded electric wires 13, 14, but when, for example, three shielded electric wires are arranged side by side, a spacer may be provided between each of the second shielded electric wires, so that a total of two spacers 35 may be provided. In other words, when the number of arranged shielded electric wires is N, a configuration having a total of (N-1) spacers 35 may be used.

[0075] In the above embodiment, the first shielding member 12c and the second shielding members 13c, 14c are braided wires in which wires are woven into a tubular shape. However, the present invention is not limited to this. For example, the shielding members may be made of metal foil made of an aluminum alloy or the like.

[0076] In the above embodiment, the shield connecting member 31 is a braided wire in which element wires are woven into a cylindrical shape, but 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 be configured so as to be able to be disposed from the outside of the internal heat shrink tube 21. 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 internal heat shrink tube 21 by being wrapped around the internal heat shrink tube 21 from the outside of the internal heat shrink tube 21. [Explanation of symbols]

[0077] 11 Wire Harness 12 First shielded wire (shielded wire) 12a 1st core wire (core wire) 12b Insulation coating 12c First shielding member (shielding member) 12d Outer insulation coating 12e Folded part 13 Second shielded wire (shielded wire) 13a 2nd core wire (core wire) 13b Insulation coating 13c Second shielding member (shielding member) 13d Outer insulation coating 13e Folded part 13f Outer surface 14 Second shielded wire (shielded wire) 14a 2nd core wire (core wire) 14b Insulation coating 14c Second shield member (shield member) 14d Outer insulation coating 14e Folded part 14f Outer surface 15 Underlay Ring 16 Wire connection part 21 Internal heat shrink tube (insulation part) 21a Inner heat shrink tube before heating 31 Shield connection member (shield connection part) 32 Crimping ring 33 Binding crimp ring 34 Heat shrink tube (exterior part) 34a Open end 34b Heat shrink tube before heating 35 Spacer 35a Circular surface 35b flat surface 35c Upper and lower end surfaces 36 Tape material 37 Glue 37a Interposition part 41 Hot Melt Ring

Claims

1. A wire harness including a plurality of shielded wires, Each of the shielded electric wires includes a core wire, an insulating coating covering an outer periphery of the core wire, and a shielding member covering an outer periphery of the insulating coating, The wire harness includes a core wire connecting portion at which the core wires are connected to each other, an insulating portion covering an outer periphery of the core wire connecting portion, a shield connecting portion at which the shield members are connected to each other while covering an outer periphery of the insulating portion, an exterior portion covering an outer periphery of the shield connecting portion and having an adhesive provided on the inside, and a spacer interposed between two adjacent shield electric wires of the plurality of shield electric wires and sealing the adhesive in the exterior portion. Wire harness.

2. The spacer is formed so as to be capable of surface-to-surface contact with an outer peripheral surface of the shielded electric wire. The wire harness according to claim 1 .

3. The shielded wire has an outer insulating coating having a circular outer periphery that covers the outer periphery of the shielding member, The spacer has an arcuate surface that follows the outer circumferential surface of the outer insulating coating. The wire harness according to claim 2.

4. the spacer has a flat surface that connects the two adjacent shielded electric wires at the shortest distance and seals the adhesive inside the exterior portion. The wire harness according to claim 1 .

5. The spacer is provided at an open end of the exterior portion to seal the adhesive inside the exterior portion. The wire harness according to claim 1 .

6. The spacer is provided so that a portion of the spacer protrudes outward from the open end of the exterior portion. The wire harness according to claim 5.

7. the two adjacent shielded electric wires are entirely spaced apart from each other at a portion where the spacer is disposed, The spacer interposed between the two adjacent shielded wires is a single part. The wire harness according to claim 1 .

8. The wire harness includes a tape member wound around a portion including an entire periphery of the opening end of the exterior portion. The wire harness according to claim 1 .

9. the spacer is provided so that a portion of the spacer protrudes outward from an open end of the exterior portion, The tape member is also wrapped around the spacer protruding from the open end of the exterior portion to the outside. The wire harness according to claim 8.

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