JP7365006B2 - wire harness - Google Patents

Description

The present disclosure relates to a wire harness.

Wire harnesses in which the outside of electric wires are covered with exterior members such as corrugated tubes have been known for some time, and in particular, wire harnesses that supply large currents have been known to use shielded wires as a countermeasure against electromagnetic noise. ing. The shielded wire has a structure in which the periphery of the covered wire is covered with an electromagnetic shielding member such as a metal braid, and the electromagnetic shielding member is covered with a sheath that is an insulating covering member.

In a wire harness using a shielded wire, the end of the sheath is stripped off at one end of the shielded wire to expose the electromagnetic shielding member, and the wire harness is connected to the core wire exposed at one end of the grounding wire. have. By grounding the ground terminal provided at the other end of the grounding wire to the casing of peripheral equipment, vehicle body panel, etc., the shielded wire can exert a stable electromagnetic shielding effect.

By the way, in a wire harness using such a shielded wire, it is necessary to suppress water intrusion into a portion where the electromagnetic shielding member is exposed. For example, in Patent Document 1, a water stopper is constructed by infiltrating a resin-based waterstop agent such as a silicone resin into the electromagnetic shielding member exposed from the end of the sheath and the connecting portion between the electromagnetic shielding member and the grounding wire. A structure in which a section is provided has been proposed.

JP2009-220641A

However, in the structure of Patent Document 1, the penetration of the resin-based water stop agent is insufficient, and there is a risk that a gap may be formed between the electromagnetic shielding member and the sheath or covered wire, and sufficient water stop performance cannot be achieved. There was an inherent problem. In addition, due to bending deformation or vibration applied to the electric wire, the resin-based water sealing agent may peel off from the sheath or insulation coating of the covered wire, and a leak path may be formed between the resin-based water-stopping agent and the sheath or covered wire. However, there was also the inherent problem of not being able to stably maintain water-stopping performance.

Therefore, a wire harness with a novel structure is disclosed, which includes a covered wire connected to an electromagnetic shielding member of the shielded wire and can suppress or reduce water intrusion from the stripped portion of the shielded wire.

The wire harness of the present disclosure includes a shielded electric wire including a first covered electric wire, an electromagnetic shielding member that covers the first covered electric wire, and a sheath that covers the electromagnetic shielding member, a second core electric wire, and the second core electric wire. a second insulated wire that covers the shielded wire, a relay terminal that electrically connects the shielded wire and the second covered wire; The shielded electric wire includes an exterior member that covers the covered electric wire and the relay terminal, and a waterproof member that has self-fusion properties and is fixed to the exterior member while covering the opening of the exterior member. The first covered electric wire has a first exposed part exposed from the sheath and the electromagnetic shielding member, and the electromagnetic shielding member of the shielded electric wire has a second exposed part exposed from the sheath, The relay terminal electrically connects the second exposed part and the second core electric wire, the second exposed part and the relay terminal are housed in the exterior member, and the waterproof member has a first region that covers the outer circumferential surface of the first exposed portion of the first covered electric wire without any gaps, and a second region that covers the outer circumferential surface of the second covered electric wire without any gaps; and the second covered electric wire respectively penetrate the first region and the second region of the waterproof member , the waterproof member includes a self-fusing tape, and the self-fusing tape includes the first region and the second region of the waterproof member. The first region of the waterproof member includes a first winding portion wound around the outer circumferential surface of the first exposed portion and a second winding portion wound around the outer peripheral surface of the second covered electric wire, and the first region of the waterproof member The second region of the waterproof member is a wire harness including the second winding portion .

According to the present disclosure, it is possible to provide a wire harness that includes a covered electric wire connected to an electromagnetic shielding member of the shielded electric wire and can suppress or reduce water intrusion from the stripped portion of the shielded electric wire.

FIG. 1 is a front view showing the main parts of the wire harness according to the first embodiment. FIG. 2 is a sectional view taken along line II-II in FIG. FIG. 3A is an explanatory diagram illustrating the procedure for manufacturing the wire harness shown in FIG. 1, and is a diagram showing the first step. FIG. 3B is an explanatory diagram illustrating a procedure for manufacturing the wire harness shown in FIG. 1, and is a diagram showing a process subsequent to FIG. 3A. FIG. 3C is an explanatory diagram illustrating a procedure for manufacturing the wire harness shown in FIG. 1, and is a diagram showing a process subsequent to FIG. 3B. FIG. 3D is an explanatory diagram illustrating a procedure for manufacturing the wire harness shown in FIG. 1, and is a diagram showing a process subsequent to FIG. 3C. FIG. 3E is an explanatory diagram illustrating a procedure for manufacturing the wire harness shown in FIG. 1, and is a diagram showing a process subsequent to FIG. 3D. FIG. 3F is an explanatory diagram illustrating a procedure for manufacturing the wire harness shown in FIG. 1, and is a diagram showing a process subsequent to FIG. 3E. FIG. 4A is an explanatory diagram illustrating a procedure for manufacturing the wire harness shown in FIG. 1, and is a diagram showing a process subsequent to FIG. 3F. FIG. 4B is an explanatory diagram illustrating a procedure for manufacturing the wire harness shown in FIG. 1, and is a diagram showing a process subsequent to FIG. 4A. FIG. 4C is an explanatory diagram illustrating a procedure for manufacturing the wire harness shown in FIG. 1, and is a diagram showing a process subsequent to FIG. 4B. FIG. 4D is an explanatory diagram illustrating a procedure for manufacturing the wire harness shown in FIG. 1, and is a diagram showing a process subsequent to FIG. 4C. FIG. 5 is a cross-sectional view of the wire harness according to the second embodiment, and corresponds to FIG. 2. FIG. 6 is a cross-sectional view of the wire harness according to the third embodiment, and corresponds to FIG. 2.

<Description of 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 shielded wire including a first covered wire, an electromagnetic shielding member that covers the first covered wire, and a sheath that covers the electromagnetic shielding member, a second core wire, and a second core wire that covers the second core wire. a second insulated wire including a second insulated wire; a relay terminal for electrically connecting the shielded wire and the second covered wire; and an opening; an exterior member that covers the relay terminal; and a waterproof member that has self-fusion properties and is fixed to the exterior member while covering the opening of the exterior member, and The covered wire has a first exposed portion exposed from the sheath and the electromagnetic shielding member, the electromagnetic shielding member of the shielded wire has a second exposed portion exposed from the sheath, and the relay terminal has a second exposed portion exposed from the sheath. , the second exposed part and the second core electric wire are electrically connected, the second exposed part and the relay terminal are housed in the exterior member, and the waterproof member is connected to the second core electric wire. a first area that covers the outer circumferential surface of the first exposed part of the first covered electric wire without any gaps; and a second area that covers the outer circumferential surface of the second covered electric wire without any gaps; The covered electric wire is a wire harness that passes through the first region and the second region of the waterproof member, respectively.

According to the wire harness of the present disclosure, in the shielded wire, the second covered wire, such as a grounding wire, is electrically connected to the second exposed portion of the electromagnetic shielding member exposed from the sheath via the relay terminal. have. In addition, it has a waterproof member that has self-fusion properties, and the opening of the exterior member is covered with the waterproof member, and inside the exterior member, there is an electromagnetic shielding member exposed from the sheath, and an electromagnetic shielding member exposed from the sheath. A relay terminal electrically connected to the second covered wire is accommodated. As a result, the electromagnetic shielding member exposed from the sheath is connected to the second covered electric wire within the water-stop region inside the exterior member whose opening is covered with the waterproof member, and the second covered electric wire is passed through the waterproof member. It can be protruded to the outside and grounded. As a result, by using the existing exterior member, it is possible to improve the insulation and waterproof properties of the electromagnetic shielding member exposed from the sheath and the relay terminal that is the connecting portion between the electromagnetic shielding member and the second covered wire.

Moreover, the first region and the second region of the waterproof member having self-fusion properties cover the outer circumferential surfaces of the first covered wire and the second covered wire exposed from the sheath of the shielded wire, respectively, without any gaps. Therefore, even if water adheres to the first covered electric wire or the second covered electric wire that penetrates the first area and the second area of the waterproof member and protrudes to the outside of the exterior member, the first covered electric wire or the second covered electric wire It is possible to prevent water from penetrating into the waterproof member along the electric wire. This prevents water from getting into the relay terminal, which is the connecting part of the second covered wire, and water that has penetrated into the interior through the first covered wire, and prevents water from entering between the electromagnetic shielding member of the shielded wire and the first covered wire or sheath. Problems such as short-circuits caused by the device passing through the gap and reaching devices such as connectors are prevented.

In addition, it can be easily confirmed that there is no gap between the first covered wire and the second covered wire passing through the waterproof member, and the conventional structure using a resin-based water sealing agent In comparison, it can stably exhibit excellent waterproof properties. Furthermore, compared to the case of a resin-based waterproofing agent, the waterproofing member can easily follow bending deformation, etc. applied to the electric wire, and peeling of the waterproofing member from the coating of the first covered electric wire and the second covered electric wire is suppressed. . As a result, the desired waterproof performance of the waterproof member can be stably improved.

In addition, the shielded wire that penetrates the exterior member and the first covered wire that penetrates the electromagnetic shielding member covered by the sheath of the shielded wire may be singular or plural, and when a plurality of first covered wires are included. In this case, the waterproof member includes a plurality of first regions that cover the outer circumferential surfaces of each of the first covered electric wires without gaps. Similarly, the number of second covered wires may be one or more, and when a plurality of second covered wires are included, the plurality of second regions that cover the outer peripheral surface of each second covered wire without any gaps are waterproof. Included in the component.

(2) The waterproof member includes a self-fusing tape, and the self-fusing tape is wound around a first winding portion wound around the outer peripheral surface of the first exposed portion and around an outer peripheral surface of the second covered electric wire. the first region of the waterproof member includes the first volume, and the second region of the waterproof member includes the second volume. is preferred. The first region of the waterproof member may be formed by, for example, wrapping the first volume of self-fusing tape around the entire circumferential length of the outer circumferential surface of the first covered wire without any gap, and the second region of the waterproof member may be formed by, for example, The second volume of the self-fusing tape can be wound around the entire circumferential length of the outer circumferential surface of the second covered electric wire without any gaps, and the first region and the second region can be provided with a simple structure. This is because it can be done. Alternatively, the first region and the second region can be configured to partially include, for example, the first volume part and the second volume part, and a good degree of freedom in design can be achieved.

In addition, since the self-fusing tape is used to construct the waterproof member through which the first covered wire and the second covered wire pass, it is less expensive than molding a waterproof member such as a grommet separately. A waterproof member can be provided.

(3) In (2) above, there are a plurality of the shielded wires, each of the plurality of shielded wires has a plurality of first exposed portions, and the self-fusing tape is a plurality of the first exposed portions. It has a plurality of first winding parts by being wound around the outer peripheral surface of each of the first exposed parts, and the plurality of first winding parts are the innermost inner peripheral side of the plurality of first winding parts. and an additional winding part on the outer peripheral side of the inner winding part among the plurality of first winding parts, and one of the plurality of first covered wires has a peripheral winding part in the inner winding part. It is preferable that the remaining first covered wires pass through the additional winding portion individually. When a plurality of first covered wires are included, the first region through which the first first covered wire penetrates includes an inner winding portion that is the first winding portion on the innermost side; For each first region that is penetrated by each first covered wire that is added thereafter, the outer circumferential surface of the first volume part or the second volume part that is in close contact with each first covered wire sandwiched therebetween, and the first volume part Alternatively, it can be configured by an additional winding part of the self-fusing tape, which is the first winding part on the outer peripheral side than the inner winding part, which is overlapped and wound around the outer peripheral surface of the second winding part. As a result, it is possible to advantageously configure a plurality of first regions while reducing the amount of self-fusing tape used by effectively utilizing the outer circumferential surface of the previously provided first or second winding section. .

(4) The number of the shielded wires is plural, the number of the second covered wires is one, each of the plurality of shielded wires has a plurality of second exposed portions, and the number of the second exposed portions is plural, and the number of the second exposed portions is one. It is preferable that the second exposed portion is electrically connected to the second core electric wire via the relay terminal. This is because the electromagnetic shielding members of the plurality of shielded electric wires can be grounded all at once using one second covered electric wire, and the workability of assembling the wire harness to the vehicle can be improved. Moreover, compared to the case where the electromagnetic shielding members of the plurality of shielded wires are taken out to the outside via individual second covered wires and grounded, the number of waterproof parts can be reduced. Furthermore, the number of second regions through which the second covered electric wire provided in the waterproof member penetrates can be reduced, the risk of water seepage from the waterproof member is reduced, and the waterproof performance of the wire harness can be improved.

(5) It is preferable that a first adhesive tape is provided to be wound around the waterproof member, and the first adhesive tape presses the waterproof member against the first exposed portion and the second covered wire. Since the waterproof member is pressed against the first exposed portion and the second covered wire by the first adhesive tape wrapped around the waterproof member, there is a gap between the waterproof member and the first covered wire and the second covered wire. This is because not only can the waterproof property of the wire harness be stably maintained, but also deterioration of the waterproof property over time can be suppressed.

(6) A second adhesive tape is provided that is wrapped around the waterproof member, the waterproof member having an inwardly extending portion covered by the exterior member, and the inwardly extending portion being connected to the first region and the The second adhesive tape preferably includes a second region, and the second adhesive tape presses the inwardly extending portion against the first exposed portion and the second covered wire. Since the inwardly extending portion of the waterproof member has the first region and the second region, the waterproof structure can be provided over a wide range by utilizing the existing space inside the exterior member, and the wiring harness can be installed in a space-efficient manner. This is because waterproofness can be improved. Furthermore, by pressing the inwardly extending portion against the first exposed portion and the second covered wire using the second adhesive tape, the first region and the second region of the inwardly extending portion are pressed against the first covered wire and the second covered wire. It can be held in close contact with the electric wire, and the possibility that a gap will occur between them can be reduced. Furthermore, by covering the inwardly extending portion with the second adhesive tape, for example, it is possible to reduce the possibility that the inwardly extending portion of the self-bonding waterproof member will adhere to the exterior member.

(7) The waterproof member includes an outwardly extending portion that extends from the opening of the sheathing member toward the outside of the sheathing member, and an outer peripheral surface of the outwardly extending portion and an outer peripheral surface of the sheathing member. It has an outer circumferential cylindrical portion that comes into close contact with the outer periphery, and a lid portion that covers the opening of the exterior member, the outwardly extending portion including the first region and the second region, and the lid portion that covers the outer periphery. Preferably, the cylindrical portion and the outwardly extending portion are integrated by self-fusion. This is because by configuring such a lid part, it is possible to stably realize sealing of the opening of the exterior member by the waterproof member and fixation of the waterproof member to the exterior member.

<Details of embodiments of the present disclosure>
Specific examples of the wire harness of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all changes within the meaning and scope equivalent to the scope of the claims.

<Embodiment 1>
Embodiment 1 of the present disclosure will be described below with reference to FIGS. 1 to 4D. The wire harness 10 electrically connects, for example, an inverter and a compressor of a vehicle. The wire harness 10 is connected to an inverter-side connector (not shown) on the left side of FIG. 1 . Further, the wire harness 10 is connected to a compressor-side connector (not shown) on the right side of FIG. 1 . In addition, in the drawings, the exterior member (corrugated tube 16 to be described later) is shown in a longitudinal section for ease of viewing the internal structure. Further, in the drawings, for ease of viewing, the thickness dimensions of self-fusing tapes α, β, first and second adhesive tapes 56, 57, binding bands 68, etc., which will be described later, are exaggerated. Furthermore, in the following description, the left side in FIG. 1 is referred to as the front, and the right side in FIG. 1 is referred to as the rear. However, the direction of the wire harness 10 does not necessarily coincide with the direction of the wire harness 10 when it is attached to the vehicle.

<Wire harness 10>
The wire harness 10 includes a shielded wire 12 connected to an inverter-side connector and a compressor-side connector. The shielded wire 12 includes a first covered wire 13 . Further, the wire harness 10 includes a second covered wire 14 that is electrically connected to an electromagnetic shielding member (braided member 24), which will be described later, and constitutes the shielded wire 12. The electromagnetic shielding member (braided member 24) of these shielded wires 12 and the second covered wire 14 are electrically connected by a splice terminal 15 as a relay terminal. Furthermore, the shielded wire 12, the second covered wire 14, and the splice terminal 15 are covered with a corrugated tube 16 as an exterior member. In the corrugated tube 16, a front opening 18 on one end side of the shielded wire 12, that is, the side to which the inverter side connector is connected, is provided with a waterproof seal that prevents water from entering the inside of the corrugated tube 16. A member 20 is provided. In the first embodiment, two shielded wires 12a and 12b are provided. Of course, the number of shielded wires is not limited, and may be one or three or more.

<Shield wire 12>
The shielded wire 12 includes a first covered wire 13, a braided member 24 as an electromagnetic shielding member that covers around the first covered wire 13 and electromagnetically shields the first covered wire 13, and covers an electromagnetic shielding member (braided member 24). It includes an insulating sheath 26.

The first covered electric wire 13 includes a first core electric wire 28 made of conductive metal and a first insulating coating 30 that covers the first core electric wire 28 . The first insulating coating 30 may have a tubular shape, for example, and may be made of soft synthetic resin or the like.

The braided member 24 is, for example, a cylindrical member formed by braiding thin conductive metal wires. In an initial state before the second covered wire 14 is connected to the braided member 24, the braided member 24 covers the first covered wire 13 over substantially the entire length thereof. Note that the manner in which the thin metal wires are braided in the braided member 24 is not limited. As the braided member 24, a conventionally known braided structure, knitted structure, or the like may be employed as appropriate.

The sheath 26 is a cylindrical member made of, for example, soft synthetic resin. In an initial state before the second covered wire 14 is connected to the braided member 24, the sheath 26 covers the first covered wire 13 and the braided member 24 over substantially the entire length thereof.

In the first embodiment, the sheath 26 is stripped over a certain length at one end (front side) of the shielded wire 12. Thereby, the braided member 24 is exposed to the outside from the sheath 26. This exposed portion of the braided member 24 to the outside is the second exposed portion 32 . In particular, in the first embodiment, the sheaths 26, 26 of the two shielded wires 12a, 12b are stripped off, and the second exposed portions 32, 32 of the braided members 24, 24 are exposed.

Further, the second exposed portions 32, 32 are folded back toward the rear side, which is the other end side of the shielded wires 12a, 12b. As a result, the first covered wires 13, 13 are exposed from the sheaths 26, 26 and the braided members 24, 24 on the front side, which is one end side of the two shielded wires 12a, 12b. The exposed portions of the first covered wires 13, 13 to the outside are first exposed portions 34, 34.

<Splice terminal 15>
The rear end portions of the folded second exposed portions 32, 32 are electrically connected to the splice terminal 15. That is, the braided members 24, 24 for two circuits are co-pressurized to the splice terminal 15. Note that the rear end portions of the folded second exposed portions 32, 32 may be bundled. In short, the second exposed parts 32, 32 (braided members 24, 24) may be electrically connected together to the relay terminal (splice terminal 15).

In the first embodiment, the splice terminal 15 is located rearward of the stripped portion of the sheath 26. Therefore, the splice terminal 15 can be stably positioned inside the corrugated tube 16. In particular, by providing the splice terminal 15 at the rear end portions of the second exposed portions 32, 32 folded back to the rear, the splice terminal 15 can be provided at a position separated from the opening 18 of the corrugated tube 16 to some extent. This reduces the possibility that the splice terminal 15 will affect the attachment of the waterproof member 20 to the opening 18 of the corrugated tube 16. Further, the intermediate portion in the length direction of the second covered wire 14 can be inserted through the waterproof member 20 more stably. As a result, as will be described later, the gap between the outer peripheral surface of the second covered electric wire 14 and the waterproof member 20 can be substantially eliminated. Therefore, the risk of water entering from the insertion portion of the second covered electric wire 14 in the waterproof member 20 can be effectively reduced.

<Second covered wire 14>
The second covered electric wire 14 includes a second core electric wire 38 having conductivity and a second insulation coating 40 that covers the second core electric wire 38. The second covered electric wire 14 extends toward the front side, which is one end side of the shielded electric wire 12 . That is, one end of the second covered wire 14 is electrically connected to the second exposed portion 32 via a relay terminal (splice terminal 15). Specifically, at one end of the second covered wire 14, the second insulation coating 40 is peeled off and the second core wire 38 is exposed. This second core electric wire 38 is electrically connected to the splice terminal 15.

Although a plurality of second covered wires may be provided, in the first embodiment, one second covered wire 14 is provided. The braided members 24, 24 of the two shielded electric wires 12a, 12b are electrically connected to one second covered electric wire 14 via the splice terminal 15. In other words, the splice terminal 15 electrically connects the second core wire 38 of the second covered wire 14 and the second exposed portions 32, 32 of the shield wires 12a, 12b together. The other end of the second covered wire 14 extends forward. In the first embodiment, the second covered wire 14 is a grounding wire. That is, the ground terminal 42 is provided at the other end (front end) of the second covered wire 14. The electromagnetic shielding member (braided member 24) is grounded by grounding the grounding terminal 42 to a high-voltage casing, a vehicle body panel, or the like.

<Waterproof member 20>
The waterproof member 20 has self-fusion properties. In the first embodiment, the waterproof member 20 is configured to include a self-fusing tape α. The self-fusing tape α is a flexible, substantially belt-shaped member. The self-fusing tape α can be cut to any length and used. The self-fusing tape α is made of, for example, butyl rubber, silicone rubber, or the like. The self-fusing tape α preferably has a tape thickness of 2 mm or more, for example. In the first embodiment, a butyl rubber tape with a tape thickness of 3 mm is used as the self-fusing tape α.

As shown in FIG. 2, the first exposed portions 34, 34 of the first covered wires 13, 13 and the outer peripheral surfaces of the second covered wires 14 of the shielded wires 12a, 12b are self-fused. Covered with tape α without any gaps. In the first embodiment, in the waterproof member 20 (self-fusing tape α), the first region 44 is the portion that covers the first exposed portion 34 of the first covered wire 13 of the shielded wire 12 . Further, in the waterproof member 20 (self-bonding tape α), the portion that covers the second covered wire 14 is the second region 46 . In particular, in the first embodiment, since a plurality of shielded wires 12a and 12b are provided, a plurality of first regions 44a and 44b are provided.

Here, inside the corrugated tube 16, the second exposed portions 32, 32 of the braided members 24, 24 in the shielded wires 12a, 12b and the splice terminal 15 connected to the second exposed portions 32, 32 are housed. There is. The first exposed portions 34, 34 of the first covered electric wires 13, 13 of the shielded electric wires 12a, 12b penetrate the first regions 44a, 44b of the waterproof member 20. Further, the second covered wire 14 passes through the second region 46 . Thereby, the first exposed portions 34 and 34 of the first covered electric wires 13 and 13 and the second covered electric wire 14 protrude to the outside of the corrugated tube 16. These first regions 44a, 44b and second region 46 are formed over the entire length of the waterproof member 20 in the front-rear direction.

This waterproof member 20 covers the opening 18 of the corrugated tube 16. In the first embodiment, the rear portion of the waterproof member 20 extends inward from the opening 18 of the corrugated tube 16 and is disposed inside the corrugated tube 16. Further, the front portion of the waterproof member 20 extends outward from the opening 18 of the corrugated tube 16. Therefore, the rear portion of the self-fusing tape α is the inwardly extending portion 48 covered by the exterior member (corrugated tube 16). The inwardly extending portion 48 extends from the opening 18 of the corrugated tube 16 toward the inside of the corrugated tube 16, that is, the other end of the shielded wire 12 (toward the right side in FIG. 1). Further, the front portion of the self-fusing tape α is an outwardly extending portion 50 that extends from the opening 18 of the corrugated tube 16 to the outside of the corrugated tube 16. The outwardly extending portion 50 extends from the opening 18 of the corrugated tube 16 toward one end (the left side in FIG. 1) of the shielded wire 12. Since the first regions 44a, 44b and the second region 46 are formed over the entire length of the waterproof member 20 in the front-rear direction, the inwardly extending portion 48 and the outwardly extending portion 50 are formed in the first region 44a, 44b and the second region 46, respectively. 44b and a second region 46.

Furthermore, a self-fusion tape β is further wound around the outer circumferential side of the self-fusion tape α. Specifically, the self-fusion tape β extends from the first exposed portions 34, 34 of the first covered wires 13, 13 located in front of the self-fusion tape α and from the second covered wire 14 to the front portion of the corrugated tube 16. wrapped around it. As a result, the self-fusing tape β is in close contact with both the outer circumferential surface of the outwardly extending portion 50 and the outer circumferential surface of the opening side end of the corrugated tube 16. As a result, the outer cylindrical portion 52 that is in close contact with the outer circumferential surface of the outwardly extending portion 50 and the outer circumferential surface of the opening side end of the corrugated tube 16 is configured to include the self-fusing tape β.

In the first embodiment, the material of the self-fusing tape β is butyl rubber, which is the same as the material of the self-fusing tape α. As a result, both self-fusion tapes α and β come into contact with each other and are self-fused to become integrated. Then, the outward extending portion 50 and the outer circumferential cylinder portion 52 (self-fusion tape β) are integrated by self-fusion, thereby forming a lid portion 54 that covers the opening 18 of the corrugated tube 16. In the following description, for convenience, self-fusion tape α and self-fusion tape β will be distinguished from each other. Of course, the material of the self-fusion tape α and the material of the self-fusion tape β may be different from each other. Moreover, both self-fusion tapes α and β do not have to be integrated.

Therefore, in the first embodiment, the waterproof member 20 includes the self-fusion tape β in addition to the self-fusion tape α. In short, the portion of the waterproof member 20 located mainly on the inner circumferential side and accommodated inside the opening 18 of the corrugated tube 16 is constituted by the self-fusion tape α. Further, a portion of the waterproof member 20 that is located mainly on the outer circumferential side and covers the opening 18 of the corrugated tube 16 from the outer circumferential side is constituted by the self-fusion tape β.

Furthermore, in the first embodiment, as shown in FIG. 1, an insulating first adhesive tape 56 is wrapped around the outer peripheral surface of the waterproof member 20. Thereby, the waterproof member 20 is fixed to the corrugated tube 16 while covering the opening 18 of the corrugated tube 16. In particular, in Embodiment 1, the first adhesive tape 56 is wrapped around the outer peripheral surface of the waterproof member 20, so that the waterproof member 20 can be connected to the first exposed portions 34, 34 of the first covered electric wires 13, 13 and the second covered electric wire It is pressed against each outer peripheral surface of 14.

Furthermore, in the first embodiment, as shown in FIG. 4A and the like described later, an insulating second adhesive tape 57 is wrapped around the outer peripheral surface of the inwardly extending portion 48 of the waterproof member 20. In particular, in the first embodiment, the second adhesive tape 57 is wrapped around the outer circumferential surface of the inwardly extending portion 48, so that the inwardly extending portion 48 can be connected to the first exposed portion 34 of the first covered wire 13, 13, 34 and the outer peripheral surfaces of the second covered wire 14.

<Assembling process of wire harness 10>
Hereinafter, a specific example of the procedure for assembling the wire harness 10 by providing the waterproof member 20 including the self-fusing tapes α and β in the opening 18 of the corrugated tube 16 will be described with reference to FIGS. 3A to 4D. explain. Of course, the procedure for providing the waterproof member 20 is not limited to the embodiment described below. Note that the right side view in FIGS. 3A to 3F is a longitudinal cross-sectional view at the position of the dashed-dotted line in the left side front view. Moreover, FIGS. 4A to 4D are all front views of the process of providing the waterproof member 20. That is, FIGS. 4A to 4D are views continuing from the left side view in FIGS. 3A to 3F.

First, the sheaths 26, 26 on one end side (front side) of the two shielded wires 12a, 12b are stripped to expose the second exposed portions 32, 32 of the braided members 24, 24. Subsequently, the second exposed portions 32, 32 are folded back to expose the first exposed portions 34, 34 of the first covered wires 13, 13. Further, at one end of the second covered wire 14, the second insulation coating 40 is peeled off to expose the second core wire 38. Then, the rear end portions of the folded second exposed portions 32, 32 and the second core electric wire 38 of the second covered electric wire 14 are electrically connected via the splice terminal 15. Note that the second exposed portions 32, 32 and the second core electric wire 38 are connected by the splice terminal 15 after, for example, the second adhesive tape 57 is wrapped around the self-fusing tape α as described later (the state shown in FIG. 4A). In this case, the step may be performed before the sheathing of the corrugated tube 16 (the state shown in FIG. 4C).

Then, as shown in FIG. 3A, a self-fusing tape α having a certain length is prepared. The first covered electric wire 13 of one of the two shielded electric wires 12a is superimposed on this self-fusion tape α. Specifically, for example, the sheath 26 of the shield wire 12a is peeled off and the braided member 24 is folded back to expose one longitudinal end of the self-fusing tape α (the upper end of the left-hand diagram in FIG. 3A). The first exposed portions 34 of the first covered electric wires 13 are overlapped.

Thereafter, as shown in FIG. 3B, the self-fusion tape α is wrapped around the outer peripheral surface of the first exposed portion 34 of the first covered wire 13 of the shielded wire 12a in the circumferential direction. Wrap it around the entire length. Since the self-fusing tape α has flexibility, the self-fusing tape α deforms along the shape of the first exposed portion 34, thereby bonding the self-fusing tape to the outer peripheral surface of the first exposed portion 34. It is designed so that there is almost no gap between it and α. In the first embodiment, the portion of the self-fusing tape α that is wound around the outer peripheral surface of the first exposed portion 34 is the first winding portion 58 . In particular, in Embodiment 1, since a plurality of shielded wires 12a, 12b are provided, a plurality of first winding portions 58a, 58b are provided to be wound around the respective outer peripheral surfaces of the plurality of first exposed portions 34, 34. It is being The portion of the shielded wire 12a located on the innermost side that is wound around the first exposed portion 34 is the inner winding portion 60 (first region 44a) that constitutes the first winding portion 58a on the innermost side. .

Subsequently, as shown in FIG. 3C, the first covered electric wire 13 of the other of the two shielded electric wires 12b is attached to the outer peripheral surface of the inner circumferential winding part 60 (first region 44a) constituting the first winding part 58a. Overlap. That is, the first exposed portion 34 of the first covered wire 13, which is exposed by peeling off the sheath 26 of the shielded wire 12b and folding back the braided member 24, is superimposed on the outer peripheral surface of the inner circumferential winding portion 60.

Then, as shown in FIG. 3D, the self-fusion tape α is wrapped around the outer peripheral surface of the first exposed portion 34 of the first covered wire 13 of the shielded wire 12b. Wrap it along the entire length. As a result, the self-fusing tape α is deformed along the shape of the first exposed portion 34, so that there is almost no gap between the outer peripheral surface of the first exposed portion 34 and the self-fusing tape α. There is. In the first embodiment, the portion of the self-fusing tape α that is wound around the first exposed portion 34 of the first covered wire 13 of the other shielded wire 12b has the first winding portion 58b on the outer peripheral side of the inner winding portion 60. This is the additional winding section 62 that constitutes the additional winding section 62. That is, the outer peripheral surface of the inner circumferential winding part 60 and the additional winding part 62 are overlapped and in close contact with each other with the first exposed part 34 of the first covered electric wire 13 of the other shielded electric wire 12b sandwiched therebetween.

Note that, as described above, it is also possible to provide three or more shielded wires. Therefore, in the self-fusion tape α, the inner circumferential winding portion 60 is the portion that is wound around the first exposed portion of the first covered wire of the first shielded wire. Further, in the self-fusion tape α, all portions that are wound around the first exposed portions of the first covered wires of the second and subsequent shielded wires are additional winding portions 62. In other words, the first covered wire of the first shielded wire passes through the first region including the inner winding portion, which is the first winding portion on the innermost side. Further, the first covered wires of the remaining shielded wires individually pass through a first region including an additional winding section, which is a first winding section on the outer circumferential side of the inner circumferential winding section. .

Thereafter, as shown in FIG. 3E, the longitudinally intermediate portion of the second covered wire 14 is overlapped with the outer circumferential surface of the additional winding portion 62.

Then, as shown in FIG. 3F, the remaining portion of the self-fusing tape α is wrapped around the outer peripheral surface of the second covered wire 14. As a result, the self-fusing tape α is deformed along the shape of the second covered wire 14, and almost no gap is created between the outer peripheral surface of the second covered wire 14 and the self-fusing tape α. There is. In the first embodiment, the portion of the self-fusing tape α that overlaps the outer circumferential surface of the additional winding portion 62 and is wound around the outer circumferential surface of the second covered wire 14 is the second winding portion 64 . That is, the outer circumferential surface of the additional winding section 62 and the second winding section 64 are overlapped and in close contact with each other with the second covered electric wire 14 interposed therebetween.

That is, in Embodiment 1, the first region 44a that covers the first exposed portion 34 of the first covered wire 13 of one shielded wire 12a is the inner circumferential winding portion 60 that is the first winding portion 58a of the self-fusing tape α. It is made up of. In addition, the first region 44b covering the first exposed portion 34 of the first covered wire 13 of the other shielded wire 12b has a self-containing structure that overlaps the outer circumferential surface of the inner circumferentially wound portion 60 and the outer circumferential surface of the inner circumferentially wound portion 60. It is constituted by an additional winding part 62 which is the first winding part 58b of the fusion tape α. Furthermore, the second region 46 covering the second covered wire 14 is constituted by the outer circumferential surface of the additional winding section 62 and the second winding section 64 of the self-fusing tape α superimposed on the outer circumferential surface of the additional winding section 62. There is.

Subsequently, as shown in FIG. 4A, a second insulating adhesive tape 57 is wound around the self-fusing tape α wound around both the first exposed portions 34 and the second covered wire 14. Specifically, in the self-fusion tape α, one end side (front end side) of the shielded wires 12a, 12b is left to some extent, and the first exposed portions 34, 34 and the second exposed portions rearward from the self-fusion tape α are exposed. A second adhesive tape 57 is wrapped across the covered electric wire 14. This makes it possible to press the self-fusion tape α toward the inner circumferential side and further reduce the gap between the first exposed portions 34, 34 and the second covered wire 14, and the self-fusion tape α. Further, it is also possible to adjust the external shape of the self-fusing tape α wound around both the first exposed portions 34, 34 and the second covered wire 14 to some extent. That is, it is also possible to make the outer shape of the self-fusion tape α, for example, a circular shape (including a perfect circle, an ellipse, an ellipse, etc.) with substantially no irregularities on the outer circumferential surface. Note that the second adhesive tape 57 covers not only the first exposed portions 34, 34 and the second covered electric wire 14, but also the braided members 24, 24, the splice terminal 15, and the sheaths 26, 26 behind the self-fusing tape α. It may also be wrapped around it to cover it.

Note that since the second adhesive tape 57 is wound around the self-fusing tape α except for the front end portion, the second adhesive tape 57 is not wound around the outer peripheral surface of the front end portion of the outwardly extending portion 50. Further, the outer circumferential surface of the inwardly extending portion 48, which is the rear portion of the self-fusion tape α, is covered with the second adhesive tape 57.

Furthermore, as shown in FIG. 4B, in the self-fusing tape α around which the second adhesive tape 57 is wound, a binding band 68 is wrapped around and fixed to the approximately central portion of the shielded wires 12a and 12b in the extending direction (front-back direction). do.

Thereafter, as shown in FIG. 4C, the corrugated tube 16 is inserted and attached from the other end side (rear side) of the shielded wires 12a, 12b to the self-fusing tape α around which the second adhesive tape 57 is wound. do. In other words, the self-fusing tape α wrapped around the first exposed portions 34 and the second covered wire 14 is inserted through the opening 18 of the corrugated tube 16. This wrapping of the corrugated tube 16 is continued until the peripheral portion of the opening 18 in the corrugated tube 16 and the binding band 68 come into contact. That is, the corrugated tube 16 is positioned in the front-rear direction with respect to the self-fusion tape α by the binding band 68. Furthermore, the binding band 68 defines the relative position of the corrugated tube 16 and the self-fusion tape α in the front-rear direction.

In the first embodiment, as described above, when the corrugated tube 16 is wrapped around the self-fusion tape α, the peripheral portion of the opening 18 in the corrugated tube 16 and the binding band 68 come into contact with each other. Therefore, in a state where the waterproof member 20 is fixed to the opening 18 of the corrugated tube 16, the area behind the part of the self-fusing tape α where the binding band 68 is wrapped is the inner side covered by the corrugated tube 16. This is the extension portion 48 . Further, in the self-fusion tape α, the above-mentioned outwardly extending portion 50 extends from the opening 18 of the corrugated tube 16 toward the outside of the corrugated tube 16 in front of the portion around which the binding band 68 is wrapped.

As shown in FIG. 4D, with the corrugated tube 16 abutted against the binding band 68, the first exposed portions 34, 34 located in front of the self-fusing tape α and the second covered wire 14 are The self-fusing tape β is wrapped around the entire circumference of the corrugated tube 16, spanning the front portion of the corrugated tube 16. Thereby, the outer circumferential cylinder portion 52 of the waterproof member 20 is configured. Further, the front end portion of the outwardly extending portion 50 on which the second adhesive tape 57 is not wrapped and the outer circumferential tube portion 52 (self-fusion tape β) are integrated by self-fusion to form the lid portion 54. In this way, the waterproof member 20 including the self-bonding tapes α and β is completed.

Thereafter, the first insulating adhesive tape 56 is wrapped around the outer peripheral surface of the waterproof member 20. Specifically, in addition to the self-fusing tape β constituting the waterproof member 20, the self-fusing tape β is extracted from the first exposed portions 34, 34 and the second covered wire 14 located in front of the self-fusing tape β. A first adhesive tape 56 is wrapped across the outer peripheral surface of the corrugated tube 16 at the rear side. Thereby, the wire harness 10 is completed. Note that by wrapping the self-fusing tape β, the waterproof member 20 is fixed to the opening 18 of the corrugated tube 16 at the same time as the waterproof member 20 is completed, but by wrapping the first adhesive tape 56, the waterproof member 20 is fixed to the inner peripheral side. It can be fixed more firmly by pressing it against.

In the wire harness 10 of the first embodiment having the above structure, a waterproof member 20 is provided in the opening 18 of the corrugated tube 16. This prevents water from entering behind the waterproof member 20, that is, into the corrugated tube 16. In particular, the splice terminal 15, which is the connecting portion between the braided members 24, 24 of the shielded wires 12a, 12b, and the second exposed portions 32, 32 and the second core wire 38, is housed inside the corrugated tube 16. Therefore, the risk that the connection portion (splice terminal 15) between the braided members 24, 24 and the second exposed portions 32, 32 and the second core electric wire 38 will be exposed to water is reduced, and the electromagnetic shielding member (braided member 24) Electromagnetic shielding effects can also be exhibited satisfactorily.

In addition, the first exposed portions 34 and 34 of the first covered wires 13 and 13 of the shielded wires 12a and 12b and the outer peripheral surfaces of the second covered wire 14 are connected to the first regions 44a and 44b and the second region 46 of the waterproof member 20, respectively. covered without any gaps. Therefore, it is difficult for water to enter through the first exposed portions 34, 34 and the insertion portion of the second covered electric wire 14 in the waterproof member 20. In particular, in Embodiment 1, for example, instead of bundling the shielded wire and the second covered wire with vinyl tape or a cable tie and then wrapping the self-fusing tape, the wire (the first exposed portion of the first covered wire 13, A self-fusing tape α is wrapped around each of the second covered electric wires 34, 34 and the second covered electric wire 14). Thereby, a gap is not generated between the electric wires (the first exposed parts 34, 34 of the first covered electric wires 13, 13 and the second covered electric wire 14), and the possibility of water intrusion through the gap can be reduced.

Furthermore, in the process of forming the waterproof member 20, for example, at the stage of FIG. It can be confirmed from the outside whether there is a gap between the tape and the self-fusing tape α. Even if a gap occurs, the gap can be eliminated or reduced by rewinding the self-fusing tape α or wrapping the second adhesive tape 57 around the outer circumferential surface of the self-fusing tape α, making it waterproof. Performance can be improved. Furthermore, since the self-fusion tape α is flexible, even when the wire harness 10 is bent, it deforms following the first exposed portions 34, 34 of the shielded wires 12a, 12b and the second covered wire 14. be able to. This further increases the possibility that gaps will occur between the first exposed portions 34, 34 of the first covered wires 13, 13 of the shielded wires 12a, 12b and the outer peripheral surfaces of the second covered wires 14 and the self-fusing tape α. As a result, the waterproof performance can be further improved.

Furthermore, since the waterproof member 20 of Embodiment 1 is formed by including the self-fusing tapes α and β, the waterproof member 20 of Embodiment 1 is more effective for molding than when a waterproof member such as a grommet is formed by molding or the like. No equipment is required and it can be formed easily and at low cost.

Furthermore, in Embodiment 1, the first regions 44a, 44b wound around the outer peripheral surfaces of the first exposed portions 34, 34 of the first covered wires 13, 13 of the shielded wires 12a, 12b are the first regions 44a, 44b of the self-fusing tape α. It is configured to include winding portions 58a and 58b. Further, the second region 46 wound around the outer circumferential surface of the second covered electric wire 14 includes a second winding portion 64 of the self-fusion tape α. That is, compared to the case where the first regions 44a, 44b and the second region 46 are formed using separate self-fusing tapes, the number of work steps can be reduced and the amount of self-fusing tape required can be suppressed. , the waterproof member 20 can be formed more cheaply and easily.

Furthermore, in the first embodiment, two shielded wires 12a and 12b are provided, and the waterproof member 20 is provided with two first regions 44a and 44b. One first region 44a is constituted by an inner circumferential winding section 60, which is the innermost first winding section 58a. The other first region 44b is composed of the outer circumferential surface of the inner circumferential winding section 60 and the additional winding section 62 superimposed on the outer circumferential surface of the inner circumferential winding section 60. That is, even when three or more shielded wires are provided, for example, it is possible to provide the inner circumferential winding part and the additional winding part on the same self-fusing tape. This allows the waterproof member to be formed more cheaply and easily.

Further, in the first embodiment, the second exposed portions 32, 32 in the braided members 24, 24 of the two shielded wires 12a, 12b are connected to the second core of the one second covered wire 14 via the splice terminal 15, respectively. It is electrically connected to the electric wire 38. Thereby, the number of work steps can be reduced compared to the case where the second covered wire is pulled out from each of the braided members. Moreover, the number of second covered electric wires can be reduced compared to the case where the second covered electric wires are drawn out from each of the braided members. Therefore, in the waterproof member 20, the number of second regions 46 through which the second covered electric wire 14 penetrates can also be reduced. As a result, the risk of water intrusion through the second region 46 can be reduced.

Furthermore, in the first embodiment, a second adhesive tape 57 is wound around the outer peripheral surface of the self-fusing tape α. The self-fusing tape α is pressed toward the inner circumferential side by the second adhesive tape 57. As a result, a gap is generated between the first exposed portions 34 and 34 of the first covered wires 13 and 13 of the two shielded wires 12a and 12b and the outer peripheral surface of the second covered wire 14 and the self-fusing tape α. The risk can be reduced. As a result, the risk of water entering the corrugated tube 16 through the waterproof member 20 can be further reduced. Further, a first adhesive tape 56 is wound around the outer peripheral surface of the self-fusing tape β. By pressing the self-fusing tape β toward the inner circumferential side with the first adhesive tape 56, the bonding between the first exposed portions 34, 34 and the outer circumferential surfaces of the second covered wire 14 and the self-fusing tape α is achieved as described above. Generation of gaps is suppressed. Not only that, but the first adhesive tape 56 also makes it possible to firmly fix the waterproof member 20 and the corrugated tube 16.

Furthermore, in the first embodiment, the rear portion of the self-fusing tape α wound around the first exposed portions 34, 34 of the first covered wires 13, 13 and the second covered wire 14 is covered with the corrugated tube 16. This is the side extension portion 48 . A second adhesive tape 57 is wound across the first exposed portions 34 and the second covered wire 14 rearward from the inwardly extending portion 48 . This prevents the inwardly extending portion 48 and the corrugated tube 16 from coming into contact with each other and sticking together. Further, for example, when assembling the corrugated tube 16, the possibility that the self-fusion tape α will be unintentionally displaced or dropped from the first exposed portions 34, 34 and the second covered wire 14 can be reduced.

Furthermore, in the first embodiment, the front portion of the self-fusing tape α wrapped around the first exposed portions 34, 34 of the first covered wires 13, 13 and the second covered wire 14 extends from the opening 18 of the corrugated tube 16. This is an outwardly extending portion 50 that extends toward the outside of the corrugated tube 16 . Furthermore, an outer cylindrical portion 52 made of self-fusing tape β is provided at the opening side end (front end) of the corrugated tube 16. The outwardly extending portion 50 and the outer circumferential cylinder portion 52 (self-fusing tape β) are integrated to form a lid portion 54. A first adhesive tape 56 is wound from the first exposed parts 34, 34 and the second covered wire 14 in front of the lid part 54 to the corrugated tube 16 in the rear part of the lid part 54. Thereby, waterproof performance can be improved. In addition, the first adhesive tape 56 effectively prevents relative movement between the waterproof member 20 and the first exposed portions 34, 34 and the second covered wire 14, and/or relative movement between the waterproof member 20 and the corrugated tube 16. can be prevented.

<Embodiment 2>
When installing the waterproof member 20 in the opening 18 of the exterior member (corrugated tube 16), the order of the first exposed portion 34 of the first covered wire 13 and the second covered wire 14 to which the self-fusing tape α is wound is the same as in the embodiment described above. The present invention is not limited to the embodiment described in 1. Embodiment 2 of the present disclosure will be described below with reference to FIG. 5. Note that the wire harness 70 of the second embodiment differs from the wire harness 10 of the first embodiment only in the order of the first exposed portion 34 and the second covered wire 14 around which the self-fusing tape α is wound. , other explanations will be omitted. Further, in the following embodiments, members and parts that are substantially the same as those in the first embodiment are designated by the same reference numerals as in the first embodiment in the drawings, and detailed explanations thereof will be omitted.

In the second embodiment, the first exposed portion 34 of the first covered wire 13 of one of the shielded wires 12a is first wrapped around the self-fusing tape α (in the steps of FIGS. 3A and 3B described above), and then ( 3C and 3D)) the second covered wire 14 is wound. Finally (in the steps shown in FIGS. 3E and 3F described above), the first exposed portion 34 of the first covered wire 13 of the other shielded wire 12b is wrapped in the self-fusion tape α. That is, in the second embodiment, the first region 44a that covers the first exposed portion 34 of one shielded electric wire 12a is constituted by the inner circumferential winding portion 60, which is the first winding portion 58a on the innermost circumferential side. Further, the second region 46 covering the second covered wire 14 includes the outer circumferential surface of the inner circumferential winding part 60 and the second winding part 64 of the self-fusing tape α superimposed on the outer circumferential surface of the inner circumferential winding part 60. It is made up of. Furthermore, the first region 44b that covers the first exposed portion 34 of the other shielded wire 12b is larger than the inner circumferential winding portion 60 that overlaps the outer circumferential surface of the second winding portion 64 and the outer circumferential surface of the second winding portion 64. It is configured to include an additional winding part 62 which is the first winding part 58b on the outer peripheral side.

The wire harness 70 of the second embodiment differs from the wire harness 10 of the first embodiment only in the order of the first exposed portion 34 and the second covered wire 14 around which the self-fusing tape α is wound. Effects similar to those of Form 1 can be exhibited.

<Embodiment 3>
Embodiment 3 of the present disclosure will be described below with reference to FIG. 6. Note that the wire harness 80 of the third embodiment is different from the wire harness 10 of the first embodiment and the wire harness 70 of the second embodiment in that the first exposed portion 34 and the second covered wire 14 are wrapped with the self-fusing tape α. The order is different.

In Embodiment 3, the second covered wire 14 is first wound around the self-fusing tape α (in the steps shown in FIGS. 3A and 3B described above), and then one of the wires is wound (in the steps shown in FIGS. 3C and 3D described above). The first exposed portion 34 of the first covered wire 13 of the shielded wire 12a is wound. Finally (in the steps shown in FIGS. 3E and 3F described above), the first exposed portion 34 of the first covered wire 13 of the other shielded wire 12b is wrapped in the self-fusion tape α. That is, in the third embodiment, the second region 82 covering the second covered wire 14 is constituted by the second winding portion 84 of the self-fusing tape α. In addition, the first region 86a covering the first exposed portion 34 of one shielded wire 12a is located at the innermost region which overlaps the outer circumferential surface of the second winding portion 84 and the outer circumferential surface of the second winding portion 84. It is configured to include an inner circumferential winding part 90 which is the first winding part 88a. Furthermore, the first region 86b covering the first exposed portion 34 of the other shielded wire 12b is formed from the inner circumferential winding portion 90, which is overlapped with the outer circumferential surface of the inner circumferential winding portion 90 and the outer circumferential surface of the inner circumferential winding portion 90. It is also configured to include an additional winding part 92 which is the first winding part 88b on the outer peripheral side.

The wire harness 80 of the third embodiment also differs from the wire harness 10 of the first embodiment only in the order of the first exposed portion 34 and the second covered wire 14 around which the self-fusing tape α is wound. Effects similar to those of Form 1 can be exhibited.

From the above, the first regions 44a, 44b, 86a, and 86b that cover the outer peripheral surface of the first exposed portion 34 of the first covered wire 13 of the shielded wire 12 without any gaps are It can be constituted by the first winding part 58a (inner winding part 60) of the self-fusing tape α which is wound over the entire circumferential length of the outer peripheral surface of the section 34. Alternatively, as in Embodiments 1 to 3, the outer circumferential surface of the inner circumferential winding parts 60 , 90 or the outer circumferential surface of the second winding part 64 , 84 and the outer circumferential surface of the inner circumferential winding parts 60 , 90 or the second winding part 64 , 84 ( inner circumferential winding section 90, additional winding sections 62, 92). That is, the first region may be configured to include the first winding part (inner winding part and/or additional winding part) of the self-fusing tape α.

In addition, the second regions 46 and 82 that cover the outer circumferential surface of the second covered wire 14 without any gaps are the first winding portions 58a and 58b (inner windings) forming the first regions 44a and 44b as in the first and second embodiments. 60 or the additional winding part 62), and the second winding part 64 which is overlapped with the outer peripheral surface of the first winding part 58a, 58b. Alternatively, as in Embodiment 3, it can be configured by the second winding portion 84 of the self-fusing tape α that is wound over the entire circumferential length of the outer circumferential surface of the second covered electric wire 14. That is, the second region may include the second volume of the self-fusing tape α.

Furthermore, in Embodiments 1 and 3, the additional winding parts 62 and 92 are overlapped and wound around the outer peripheral surfaces of the inner winding parts 60 and 90, thereby forming the first regions 44b and 86b on the outer peripheral side. Alternatively, in the second embodiment, the additional winding section 62 is wound in an overlapping manner on the outer peripheral surface of the second winding section 64, thereby forming the first region 44b on the outer peripheral side. That is, when the first exposed portion 34 and a plurality of first regions penetrated by the first exposed portion 34 are provided, for example, the first one of the first regions (the first region on the inner circumferential side) has an inner circumferential winding portion. The remaining first region (the first region on the outer circumferential side) includes the outer circumferential surface of the first volume part or the second volume part, and the outer peripheral surface of the first volume part or the second volume part. It can be constituted by additional windings that are wound in a superimposed manner.

<Other embodiments>
The technology described in this specification is not limited to the embodiments described above and illustrated in the drawings; for example, the following embodiments are also included within the technical scope of the technology described in this specification.

(1) In the embodiment described above, the electromagnetic shielding member is the braided member 24 made of thin metal wires, but it may also be made of, for example, metal foil. Further, the electromagnetic shielding member may include a drain wire connected to a metal braided tube or metal foil, and a grounding wire may be electrically connected to the drain wire.

(2) The circumferential dimensions of the first winding part, the second winding part, and the additional winding part are not limited, and may be shorter than one round, for example, half a round, or longer than one round. , for example, the circumferential dimension may be one and a half circumferences or two circumferences. Note that the first exposed portions 34, 34 of the first covered wires 13, 13 and the second covered wire 14 are not overlapped after wrapping the self-fusing tape α, but, for example, at the stage of FIG. 3A described above, The self-fusing tape α is placed on the self-fusing tape α with a certain distance in the vertical direction of the left figure in FIG. It's okay.

(3) The method of forming the waterproof member is not limited to the embodiment described above. For example, the first exposed portion of one first covered wire is overlapped with one end of the self-fusing tape (the upper end in the left diagram in FIG. 3A), and the first exposed portion of the other first covered wire is 1 exposed part to the other end of the self-fusing tape (the lower end of the left figure in FIG. 3A), and the self-fusing tape is placed on both sides in the vertical direction of the left figure in FIG. 3A. You can also roll it from scratch. In short, it is sufficient that the self-fusing tape is wrapped around each wire (the first exposed portion of the first covered wire and the second covered wire) with almost no gaps, and the order of winding, the position of the self-fusing tape, and the The number of times etc. are not limited in any way. Furthermore, the thickness dimension of the self-fusing tape is not limited either, and can be arbitrarily set depending on the size (diameter dimension) of the first exposed portion of the first covered wire and the second covered wire.

(4) The waterproof member according to the present disclosure only needs to have self-bonding properties, and does not necessarily need to be formed from a self-bonding tape. Further, in the embodiment, the self-fusing tape α is wound around the first exposed portions 34, 34 of the first covered wires 13, 13 and the second covered wire 14, but the present invention is not limited to this embodiment. That is, for example, the first exposed portion and the second covered wire are sandwiched between a plurality of plate-shaped members having self-bonding properties, and the plurality of plate-shaped members are sandwiched between the first exposed portion and the second covered wire. The waterproof member may be formed by self-welding with each other. Alternatively, even when a self-fusing tape is employed, it may be folded to cover the first exposed portion and the outer circumferential surface of the second covered wire, rather than being wrapped.

(5) In the embodiment described above, the braided members 24, 24 of the two shielded wires 12a, 12b were connected to one second covered wire 14 via the splice terminal 15, but a plurality of shielded wires are provided. In this case, a second covered electric wire may extend from the electromagnetic shielding member of each shielded electric wire. Alternatively, for example, when two shielded wires are provided, the sheath of one shielded wire is stripped and the second covered wire is electrically connected to the exposed electromagnetic shielding member, and the first exposed wire in the first covered wire is It is only necessary that the part and the second covered wire be inserted through the waterproof member. Then, the other shielded wire may be inserted through the waterproof member without being stripped, and this other shielded wire has a separate connection structure and waterproof structure between the electromagnetic shielding member and the second covered wire. It may be provided.

(6) In the embodiment described above, the braided members 24, 24, which are electromagnetic shielding members, are folded back and connected to the splice terminal 15, but the present invention is not limited to this embodiment. That is, for example, when the amount of exposure of the electromagnetic shielding member is small, the second covered electric wire may be connected to the electromagnetic shielding member that is not folded back but extends forward.

(7) In the embodiment described above, the splice terminal 15 is employed as a relay terminal for connecting the electromagnetic shielding member (braided member 24) and the second covered wire 14, but the specific structure of the relay terminal is particularly limited. It is not necessary that the electromagnetic shielding member and the second covered electric wire be electrically connected to each other.

10 Wire harness 12, 12a, 12b Shielded wire 13 First covered wire 14 Second covered wire 15 Splice terminal (relay terminal)
16 Corrugated tube (exterior material)
18 Opening 20 Waterproof member 24 Braided member (electromagnetic shielding member)
26 Sheath 28 First core electric wire 30 First insulation coating 32 Second exposed portion 34 First exposed portion 38 Second core electric wire 40 Second insulation coating 42 Earth terminals 44, 44a, 44b First area 46 Second area 48 Inward Extending portion 50 Outward extending portion 52 Outer cylindrical portion 54 Lid portion 56 First adhesive tape 57 Second adhesive tape 58, 58a, 58b First volume 60 Inner volume 62 Additional volume 64 Second volume 68 Binding band 70 Wire harness 80 Wire harness 82 Second region 84 Second winding section 86a, 86b First region 88a, 88b First winding section 90 Inner winding section 92 Additional winding sections α, β Self-fusion tape

Claims (6)

A shielded electric wire including a first covered electric wire, an electromagnetic shielding member that covers the first covered electric wire, and a sheath that covers the electromagnetic shielding member;
a second covered electric wire including a second core electric wire and a second insulation coating that covers the second core electric wire;
a relay terminal that electrically connects the shielded wire and the second covered wire;
an exterior member having an opening and covering the shielded wire, the second covered wire, and the relay terminal;
a waterproof member that has self-fusion properties and is fixed to the exterior member while covering the opening of the exterior member;
The first covered wire of the shielded wire has a first exposed portion exposed from the sheath and the electromagnetic shielding member,
The electromagnetic shielding member of the shielded wire has a second exposed portion exposed from the sheath,
The relay terminal electrically connects the second exposed portion and the second core electric wire,
The second exposed portion and the relay terminal are housed in the exterior member,
The waterproof member has a first region that covers the outer circumferential surface of the first exposed portion of the first covered electric wire without a gap, and a second region that covers the outer circumferential surface of the second covered electric wire without a gap,
The first exposed portion and the second covered wire penetrate the first region and the second region of the waterproof member, respectively ,
The waterproof member includes a self-fusing tape,
The self-fusing tape has a first winding part wound around the outer peripheral surface of the first exposed part, and a second winding part wound around the outer peripheral surface of the second covered electric wire,
The first region of the waterproof member includes the first volume,
The second region of the waterproof member includes the second winding portion of the wire harness. The shielded wires are plural;
Each of the plurality of shielded wires has a plurality of first exposed portions,
The self-fusing tape has a plurality of first winding parts by being wound around the outer peripheral surface of each of the plurality of first exposed parts,
The plurality of first winding portions include an innermost winding portion among the plurality of first winding portions, and an outer peripheral winding portion of the plurality of first winding portions than the inner peripheral winding portion. an additional winding section;
One of the plurality of first covered wires passes through the inner circumferential winding part,
The wire harness according to claim 1 , wherein the remaining of the plurality of first covered wires individually pass through the additional winding portion. The shielded wires are plural;
The second covered electric wire is one,
Each of the plurality of shielded wires has a plurality of second exposed portions,
The wire harness according to claim 1 or 2 , wherein the plurality of second exposed portions are electrically connected to the second core electric wire via the relay terminal. A shielded electric wire including a first covered electric wire, an electromagnetic shielding member that covers the first covered electric wire, and a sheath that covers the electromagnetic shielding member;
a second covered electric wire including a second core electric wire and a second insulation coating that covers the second core electric wire;
a relay terminal that electrically connects the shielded wire and the second covered wire;
an exterior member having an opening and covering the shielded wire, the second covered wire, and the relay terminal;
a waterproof member that has self-fusion properties and is fixed to the exterior member while covering the opening of the exterior member;
The first covered wire of the shielded wire has a first exposed portion exposed from the sheath and the electromagnetic shielding member,
The electromagnetic shielding member of the shielded wire has a second exposed portion exposed from the sheath,
The relay terminal electrically connects the second exposed portion and the second core electric wire,
The second exposed portion and the relay terminal are housed in the exterior member,
The waterproof member has a first region that covers the outer circumferential surface of the first exposed portion of the first covered electric wire without a gap, and a second region that covers the outer circumferential surface of the second covered electric wire without a gap,
The first exposed portion and the second covered wire penetrate the first region and the second region of the waterproof member, respectively,
comprising a first adhesive tape wrapped around the waterproof member;
In the wire harness, the first adhesive tape presses the waterproof member against the first exposed portion and the second covered wire. A shielded electric wire including a first covered electric wire, an electromagnetic shielding member that covers the first covered electric wire, and a sheath that covers the electromagnetic shielding member;
a second covered electric wire including a second core electric wire and a second insulation coating that covers the second core electric wire;
a relay terminal that electrically connects the shielded wire and the second covered wire;
an exterior member having an opening and covering the shielded wire, the second covered wire, and the relay terminal;
a waterproof member that has self-fusion properties and is fixed to the exterior member while covering the opening of the exterior member;
The first covered wire of the shielded wire has a first exposed portion exposed from the sheath and the electromagnetic shielding member,
The electromagnetic shielding member of the shielded wire has a second exposed portion exposed from the sheath,
The relay terminal electrically connects the second exposed portion and the second core electric wire,
The second exposed portion and the relay terminal are housed in the exterior member,
The waterproof member has a first region that covers the outer circumferential surface of the first exposed portion of the first covered electric wire without a gap, and a second region that covers the outer circumferential surface of the second covered electric wire without a gap,
The first exposed portion and the second covered wire penetrate the first region and the second region of the waterproof member, respectively,
comprising a second adhesive tape wrapped around the waterproof member;
The waterproof member has an inwardly extending portion covered by the exterior member,
The inwardly extending portion includes the first region and the second region,
In the wire harness, the second adhesive tape presses the inwardly extending portion against the first exposed portion and the second covered wire. A shielded electric wire including a first covered electric wire, an electromagnetic shielding member that covers the first covered electric wire, and a sheath that covers the electromagnetic shielding member;
a second covered electric wire including a second core electric wire and a second insulation coating that covers the second core electric wire;
a relay terminal that electrically connects the shielded wire and the second covered wire;
an exterior member having an opening and covering the shielded wire, the second covered wire, and the relay terminal;
a waterproof member that has self-fusion properties and is fixed to the exterior member while covering the opening of the exterior member;
The first covered wire of the shielded wire has a first exposed portion exposed from the sheath and the electromagnetic shielding member,
The electromagnetic shielding member of the shielded wire has a second exposed portion exposed from the sheath,
The relay terminal electrically connects the second exposed portion and the second core electric wire,
The second exposed portion and the relay terminal are housed in the exterior member,
The waterproof member has a first region that covers the outer circumferential surface of the first exposed portion of the first covered electric wire without a gap, and a second region that covers the outer circumferential surface of the second covered electric wire without a gap,
The first exposed portion and the second covered wire penetrate the first region and the second region of the waterproof member, respectively,
The waterproof member includes an outwardly extending portion that extends from the opening of the exterior member toward the outside of the exterior member, and an outer periphery that is in close contact with an outer peripheral surface of the outwardly extending portion and an outer peripheral surface of the exterior member. comprising a cylindrical portion and a lid portion that covers the opening of the exterior member,
The outwardly extending portion includes the first region and the second region,
The wire harness is configured such that the lid portion is configured by integrating the outer circumferential cylinder portion and the outwardly extending portion by self-fusion.

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