JP6870021B2 - Wire harness wiring structure - Google Patents

Description

The present invention relates to a technique for attaching an exterior member to an electric wire in a wire harness for a vehicle.

In Patent Document 1, when a sheet-shaped exterior member is attached to an electric wire, the exterior member is positioned with respect to the electric wire by winding a tape around each end of the exterior member and the electric wire extending from the end. The technology is disclosed.

Japanese Unexamined Patent Publication No. 2015-72798

An object of the present invention is to provide an exterior member with a technique for providing a region bent along the surface of a member to be arranged with an electric wire.

In order to solve the above problems, the wiring structure of the wire harness according to the first aspect is arranged on one main surface side of the exterior member formed in a sheet shape and the exterior member and fixed to the one main surface. The electric wire is fixed so as to include at least one electric wire and a wiring target member to be allocated to the electric wire, and the electric wire extends along the longitudinal direction of the wiring target member. The exterior member is arranged on the wiring target member, the wiring target member is a rod-shaped member having a circular outer surface in a cross section orthogonal to the longitudinal direction, and the exterior member has an outer surface of the wiring target member. It has a region around the circular portion that is curved and in contact with the surface in a circular shape.

In the wire harness distribution structure according to the first aspect, the electric wire and the exterior member are fixed at a plurality of positions spaced apart along the extending direction of the electric wire on the main surface of the exterior member. ..

Arranging structure of a wire harness according to the second aspect is a routing structure of a wire harness according to the first aspect, the distribution search object member is reinforcements.

The wire harness wiring structure according to the third aspect is the wire harness wiring structure according to the second aspect, and one end portion and the other end portion in the width direction of the exterior member overlap with the exterior member. As described above, there is a portion wound around the entire circumference of the reinforcement.

Arranging structure of a wire harness according to the fourth aspect, the first a wiring structure of a wire harness according to the third one of the embodiments, along the extending direction of the wire out of the outer member A part of the region is a region bent along the surface of the wiring target member , and at least a part of the exterior member along the extending direction of the electric wire is a region. It is in a flat state.

Arranging structure of a wire harness according to a fifth aspect is the from the first a wiring structure of a wire harness according to the fourth one of the embodiment, around the outer member of the distribution search target member In the region bent along the surface, the exterior member is located closer to the wiring target member than the wire.

Arranging structure of a wire harness according to a sixth aspect is that the first a wiring structure of a wire harness according to the fourth one of the embodiment, around the outer member of the distribution search target member The exterior member is located outside the wire in a region that is bent along the surface.

According to each aspect, the exterior member can be provided with a region bent along the surface of the member to be laid out of the electric wire.

It is a perspective view which shows the wire harness which concerns on embodiment. It is the schematic sectional drawing which shows the wire harness which concerns on embodiment. It is a perspective view which shows the state before rolling the exterior member. It is explanatory drawing which shows one manufacturing process of the wire harness which concerns on embodiment. It is explanatory drawing which shows one manufacturing process of the wire harness which concerns on embodiment. It is explanatory drawing which shows one manufacturing process of the wire harness which concerns on embodiment. It is explanatory drawing which shows one manufacturing process of the wire harness which concerns on embodiment. It is the schematic sectional drawing which shows the modification of the wire harness. It is a schematic perspective view which shows another modification of the wire harness.

{Embodiment}
Hereinafter, the wire harness according to the embodiment will be described. FIG. 1 is a perspective view showing a wire harness 10 according to an embodiment. FIG. 2 is a schematic cross-sectional view showing the wire harness 10 according to the embodiment. FIG. 3 is a perspective view showing a state before the exterior member 30 is rolled.

The wire harness 10 is used as wiring for electrically connecting various electric devices mounted on a vehicle or the like. Here, the wire harness 10 will be described as being arranged around the instrument panel, for example, in the vehicle. Of course, the wiring location of the wire harness 10 in the vehicle is not limited to the above-mentioned location, and may be arranged around the roof, door, or the like. Specifically, the wire harness 10 includes an exterior member 30, an electric wire 12, and a sewing thread 40. The wire harness 10 further includes a connector 20 and a fixing member 50.

Here, the wire harness 10 will be described as being arranged along the rod-shaped member 70. In the example shown in FIG. 1, the rod-shaped member 70 is a member extending in the three-dimensional direction. In the example shown in FIG. 1, the rod-shaped member 70 is formed in a circular shape in cross section, but this is not essential and may be a square shape or the like. The rod-shaped member 70 may be, for example, a member called reinforcement. When the wire harness 10 extends along the rod-shaped member 70, the wire harness 10 is also bent in the three-dimensional direction. Here, around the instrument panel, the wiring space for the wire harness 10 is narrow, and there may be a place where the exterior member 30 attached to the wire harness 10 needs to have a flat shape. On the other hand, if the exterior member 30 attached to the wire harness 10 has a flat shape, it becomes difficult to bend the wire harness 10 in the flat surface, and the wire harness 10 is aligned with the rod-shaped member 70 extending in the three-dimensional direction. Becomes difficult. Therefore, in the wire harness 10 according to the present invention, a part of the exterior member 30 has a flat shape, and at least a part of the other area has a shape that is easy to bend.

The exterior member 30 is formed in a sheet shape. In the example shown in FIG. 1, the exterior member 30 is formed in the shape of a rectangular sheet. However, the shape of the exterior member 30 is not limited to the above-mentioned one, and can be appropriately changed depending on the arrangement form of the electric wire 12 and the like. The exterior member 30 is a member that is exteriorized by the electric wire 12. The exterior member 30 has at least one of the functions of soundproofing (silence, sound absorption, sound insulation, etc.), protection (wear resistance, tension resistance, penetration resistance, etc.), heat dissipation, shield, waterproofing, etc. with respect to the electric wire 12. Is. As for the function of the exterior member 30, an appropriate function is selected according to the nature of the electric wire 12 and the environment of the place where the electric wire 12 is arranged. Here, since the electric wire 12 is arranged at a place where the electric wire 12 may rub against the surrounding members, an example will be described in which the exterior member 30 is a protective sheet having abrasion resistance.

Such a protective sheet is formed of a sheet material such as PVC (polyvinyl chloride), PP (polypropylene), and non-woven fabric. When the protective sheet is made of non-woven fabric, it may be hot-pressed or the like. This makes it possible to harden the protective sheet. The wear resistance of the protective sheet may be obtained from the physical properties of the structure or may be obtained from the physical properties of the material. For example, in the example shown in FIG. 1, the protective sheet is formed flat, but it is considered that the wear resistance of the protective sheet can be improved by adopting a structure in which the outer surface of the protective sheet is provided with irregularities. Be done. Further, for example, it is considered that the protective sheet can be hardened and the abrasion resistance can be improved by adopting the structure in which the non-woven fabric is hot-pressed as described above. Further, for example, it is considered that the abrasion resistance can be improved by adopting a hard material as the material constituting the protective sheet.

As described above, the exterior member 30 is flat in some areas and rounded in at least some other areas. In the example shown in FIG. 1, both ends of the electric wire 12 along the extending direction are rounded, and the region between them is formed flat. Of course, the end side of the electric wire 12 along the extending direction may be a flat region, or a rounded region may exist between the flat regions. Further, the one end side along the extending direction of the electric wire 12 may be a flat region and the other end side may be a rounded region. Further, the flat area and the rounded area may be arranged more than in the illustrated example.

In the rounded region of the exterior member 30, the exterior member 30 is at least doubled with the main surface 31a as the inner peripheral side. As a result, the exterior member 30 can cover the entire circumference of the electric wire 12. However, the exterior member 30 may be rounded with the other main surface 31b as the inner peripheral side. Further, the exterior member 30 does not have to be doubled.

Here, a slit 32 that reaches the outer edge from the inside of the exterior member 30 is formed at the boundary between the flat region and the rounded region of the exterior member 30. In the example shown in FIG. 1, the slit 32 is formed along a direction orthogonal to the extending direction of the electric wire 12, but the slit 32 is not limited to this. Further, in the example shown in FIG. 1, the slit 32 has a cut shape without a width, but may have a concave shape with a width.

The electric wire 12 is arranged on one main surface 31a side of the exterior member 30. At least one electric wire 12 may be included. Here, a plurality of electric wires 12 (three in the example shown in FIG. 1) are included. Here, it is assumed that the insulated wire 12 including the core wire 14 and the insulating coating 16 covering the core wire 14 is adopted as the electric wire 12 (see FIG. 8). The core wire 14 is formed of a conductive material such as copper or aluminum. The core wire 14 may be a single wire or a stranded wire. The insulating coating 16 may be formed by extruding a resin or the like on the outer periphery of the core wire 14, or may be formed by baking a varnish or the like applied to the outer periphery of the core wire 14. Good. However, the bare core wire 14 may be adopted as the electric wire 12.

As will be described in detail later, when a manufacturing process using a sewing machine or the like is adopted, it is preferable that the electric wire 12 is strong in tension. Further, a thin one is preferable. Further, from this point of view, a signal line that can be relatively thin is preferable to a power line that tends to be relatively thick.

The end of the electric wire 12 is incorporated into the connector 20. Then, the connector 20 is connected to the connector 20 on the side of various electric devices mounted on the vehicle or the like in a state where the wire harness 10 is arranged at the arrangement target portion in the vehicle or the like. As a result, the wire harness 10 is used as wiring for electrically connecting various electric devices mounted on a vehicle or the like.

Here, the connector 20 is also sewn to the exterior member 30. A hole 22 or a recess or the like is formed in the connector housing 21 of the connector 20, and the connector housing 21 is sewn to the exterior member 30 by using the hole 22 or the recess or the like. As the hole 22 or the recess, an existing one such as one formed in the lock portion or one formed in the cassette portion may be used, or a new dedicated one may be provided. However, it is not essential that the connector 20 is sewn to the exterior member 30. In this case, the connector 20 may or may not be fixed to the exterior member 30 by another means such as an adhesive tape or an adhesive.

Here, as shown in FIG. 2, a pressure welding type connector 20 is adopted as the connector 20. More specifically, the connector housing 21 is composed of a first member 23 and a second member 24 that can be combined with the first member 23. The first member 23 can hold the pressure welding terminal 26 in such a manner that the pressure welding portion 27 of the pressure welding terminals 26 that can be pressure-welded to the insulated wire 12 is exposed to the outside. Further, the first member 23 accommodates the mating side connecting portion 28, which is connected to the mating side conductor among the pressure welding terminals 26, in a manner capable of connecting to the mating side conductor. The second member 24 is arranged to face the portion of the first member 23 that holds the pressure contact portion 27, and can press the insulated wire 12 toward the pressure contact portion 27. Then, the insulated wire 12 is pressed toward the pressure-welded portion 27 by the second member 24 in a state where the insulated wire 12 is positioned on the pressure-welded portion 27 of the pressure-welding terminal 26 held by the first member 23 without peeling. As a result, a part of the pressure welding portion 27 breaks through the coating of the insulated wire 12 and comes into contact with the core wire 14 to be connected.

In the example shown in FIG. 3, all three electric wires 12 are sewn to the exterior member 30 by the sewing thread 40. However, when a plurality of electric wires 12 are included in the wire harness 10, the unsewn electric wires 12 may be included.

Further, in the example shown in FIG. 1, all three electric wires 12 are connected to the same connector 20. However, when the wire harness 10 includes a plurality of electric wires 12, the electric wires 12 connected to different connectors 20 may be included.

Further, in the example shown in FIG. 1, the electric wires 12 are arranged in a straight line. However, the electric wire 12 may be bent and arranged. When a plurality of electric wires 12 are included in the wire harness 10, both the linearly arranged electric wires 12 and the bent electric wires 12 may exist. In this case, branches may be formed in the plurality of electric wires 12 on the exterior member 30.

Further, in the example shown in FIG. 1, the electric wire 12 is arranged at a position close to the center in the width direction with respect to the exterior member 30. However, the route in which the electric wire 12 is arranged with respect to the exterior member 30 is not limited to the above. For example, the electric wire 12 may be arranged at a position closer to the end portion in the width direction with respect to the exterior member 30. Further, for example, the electric wire 12 may extend diagonally with respect to the exterior member 30.

The sewing thread 40 sews the electric wire 12 to the exterior member 30. The sewing thread 40 is preferably a member that is easier to bend than the electric wire 12. Further, the sewing thread 40 preferably has a stronger tensile strength than the electric wire 12. The sewing thread 40 may be formed of natural fibers as a material, or may be formed of chemical fibers as a material. Further, the sewing thread 40 may be a single thread or a twisted thread.

When there is a risk that the sewing thread 40 may come into contact with surrounding members while assembled in a vehicle, the sewing thread 40 may be made of nylon, polyester, or the like and has high wear resistance such as so-called fishing thread. preferable.

Here, as shown in FIG. 2, one continuous sewing thread 40 is adopted as the sewing thread 40 for sewing one electric wire 12, and the electric wire is used at a plurality of positions along the extending direction of the electric wire 12 by the one sewing thread 40. 12 is sewn. At this time, one sewing thread 40 extends along the other main surface 31b side of the exterior member 30, and partially escapes to the one main surface 31a side of the exterior member 30 to form a ring 85. Then, the electric wire 12 is sewn by inserting the electric wire 12 through the ring 85.

However, it is not essential that one electric wire 12 is sewn by one continuous sewing thread 40. As the sewing thread 40, those in which the electric wire 12 is partially sewn at one position and both ends are cut may exist at a plurality of locations along the extending direction of the electric wire 12.

The fixing member 50 is a member for fixing the electric wire 12 to the attachment target. Here, the fixing member 50 is also sewn to the exterior member 30. Here, the fixing member 50 is a member called a clamp or a clip having a pillar portion 54 and a vane portion 56 extending from the tip of the pillar portion 54.

A hole 52 or a recess or the like is formed in the fixing member 50, and the fixing member 50 is sewn to the exterior member 30 by using the hole 52 or the recess or the like. As the hole 52 or the recess, an existing one may be used, or a new dedicated one may be provided.

In the example shown in FIG. 1, the fixing member 50 is attached so as to project from the other main surface 31b side opposite to the one main surface 31a on which the electric wire 12 is arranged. Further, the fixing member 50 is provided at a portion where the exterior members 30 are doubly overlapped with each other in the area to be rolled. As a result, as shown in FIG. 2, when the exterior member 30 is rolled so as to surround the electric wire 12, the fixed member 50 is inserted into the portion of the exterior member 30 that overlaps with the fixing member 50 to be rolled. Can be maintained. As shown in FIG. 3, in the rolled region of the exterior member 30, a through hole 34 may be formed in a portion overlapping the portion where the fixing member 50 is provided when the exterior member 30 is rolled. This makes it easier to insert the portion overlapping the fixing member 50 into the fixing member 50.

However, the fixing member 50 may be attached so as to project from the main surface 31a side. Further, the fixing member 50 may be provided in a flat region.

<Manufacturing method>
Next, a method of manufacturing the wire harness 10 according to the embodiment will be described with reference to FIGS. 4 to 7. 4 to 7 are explanatory views showing one manufacturing process of the wire harness 10 according to the embodiment.

First, the exterior member 30, the electric wire 12, the sewing thread 40, and the needle 80 are prepared. Here, a needle 80 having a hole 82 is used. The hole 82 is provided on the tip end side of the needle 80. A sewing thread 40 is passed through the hole 82 as a needle thread 84.

Next, as shown in FIG. 4, the needle 80 through which the needle thread 84 is passed through the hole 82 is inserted into the exterior member 30 from the other main surface 31b side (step (a)). As a result, a part of the needle thread 84 is pulled out together with the needle 80 toward the main surface 31a.

Next, the ring 85 is formed on the needle thread 84 passed through the main surface 31a side (step (b)). For example, as shown in FIG. 5, when the needle 80 is returned to the other main surface 31b side, a part of the needle thread 84 that has come out to the one main surface 31a side together with the needle 80 remains on the one main surface 31a side, and the ring 85 is formed. It is formed.

Next, the electric wire 12 as the bobbin thread 86 is inserted through the ring 85 (step (c)). Here, first, the ring 85 is expanded as shown in FIG. Then, the ring 85 is rotated around the bobbin 90 that winds and accommodates the electric wire 12, and the bobbin 90 is passed through the ring 85.

After that, as shown in FIG. 7, by tightening the ring 85, the electric wire 12 is inserted into the ring 85. As a result, the sewing of the electric wire 12 at the relevant portion is completed.

After that, by repeating the same operation while feeding the exterior member 30, one electric wire 12 can be continuously sewn with one thread.

Then, the connector 20 and the fixing member 50 are separately sewn to the exterior member 30 to which the electric wire 12 is sewn. It should be noted that these may be sewn before the electric wire 12 is sewn. After the connector 20 and the electric wire 12 are sewn, the end of the electric wire 12 is connected to the pressure welding connector 20.

Further, a slit 32 and a through hole 34 are formed in the exterior member 30. These may be before or after the sewing process. Then, when the sewing process is completed and the slit 32 and the through hole 34 are formed and the state as shown in FIG. 3 is obtained, the rounding area (one side portion sandwiching the slit 32) in the exterior member 30 is rounded. The fixing member 50 is inserted into the overlapping portion of the exterior member 30, here the through hole 34, to maintain the rolled state. From the above, the wire harness 10 is completed.

Of the above manufacturing methods, the sewing process may be performed by using a sewing machine or by hand sewing. By using a sewing machine, some processes can be automated.

When a sewing machine is used, the operation of rotating the wheel 85 around the bobbin 90 while expanding the wheel 85 is performed by a well-known pot member. Further, by making the needle thread 84 weaker than the bobbin thread 86, it is possible to prevent the electric wire 12 as the bobbin thread 86 from being pulled into the other main surface 31b side of the exterior member 30 by the needle thread 84.

According to the wire harness 10 configured as described above and the manufacturing method thereof, since the electric wire 12 is sewn to the exterior member 30, the exterior member 30 can be easily provided even in a direction intersecting the extending direction of the electric wire 12. Can be rolled into. The portion of the exterior member 30 that is rounded in the direction intersecting the extending direction of the electric wire 12 has a higher degree of freedom in the bending direction than the flat portion. As a result, both the flat region and the curved region of the wire harness 10 can be easily handled by one exterior member 30. At this time, since the sewing machine can be used in the sewing process, the wire harness 10 can be easily manufactured.

Further, since the slit 32 that reaches the outer edge from the inside of the exterior member 30 is formed at the boundary between the flat region and the rounded region of the exterior member 30, the rounded region can be made smaller more easily. Can be rolled. In addition, it is possible to prevent the flat region from being rounded.

Further, since the fixing member 50 for fixing the electric wire 12 to the attachment target is sewn to the exterior member 30, the fixing member 50 can be easily attached.

Further, since the exterior member 30 is maintained in a rolled state by the fixing member 50 provided in the rounded region of the exterior member 30, the exterior member 30 can be easily maintained in the rolled state.

Further, since there is a portion of the exterior member 30 in which the exterior member 30 is at least doubled with the main surface 31a as the inner peripheral side, the exterior member 30 covers the entire circumference of the electric wire 12. It becomes possible.

{Modification example}
FIG. 8 is a schematic cross-sectional view showing a modified example of the wire harness 10.

The wire harness 110 according to the modified example is different from the wire harness 10 according to the embodiment in that a part of the exterior member 130 in the width direction is wound around the rod-shaped member 70.

In the example shown in FIG. 8, one of the exterior members 130 on which the electric wire 12 is arranged has the main surface 131a facing the rod-shaped member 70 side, but this is not essential, and the other main surface 131b side is rod-shaped. It may be directed toward the member 70 side.

FIG. 9 is a schematic perspective view showing another modification of the wire harness 10.

The wire harness 210 according to the modified example is different from the wire harness 10 according to the embodiment in that the exterior member 230 is not provided with the slit 32.

In this way, even when the slit 32 is not provided in the exterior member 230, it is possible to keep a part of the region of the exterior member 230 flat while keeping a part of the other region flat.

{Other variants}
In the embodiment, the wire harness 10 has been described as being arranged along the rod-shaped member 70, but this is not essential. For example, it is conceivable that the wire harness 10 is arranged along a flat plate-like member such as a vehicle body panel or a roof.

Further, although it has been described that the protective sheet has abrasion resistance, this is not essential. It is also conceivable that the protective sheet has penetration resistance. In this case, the protective sheet may have the penetration resistance required under the usage environment of the vehicle, and the needle 80 used for sewing the electric wire 12 to the protective sheet is inserted into the protective sheet with a penetrating force higher than that. It should be done. Further, in the embodiment, the exterior member 30 has been described as a protective sheet, but this is not essential. The exterior member 30 may be a soundproof sheet, a shield member, a heat radiating member, or may function as a tension member.

Further, although it has been described so far that the electric wires 12 are sewn one by one with the sewing thread 40, this is not essential. A plurality of electric wires 12 may be sewn together by the sewing thread 40. In this case, the plurality of electric wires 12 may be grouped together with an adhesive tape or the like. Further, a cable including a plurality of electric wires 12 and a sheath covering the periphery of the plurality of electric wires 12 may be adopted.

Further, although it has been described so far that the pressure welding connector 20 is used as the connector 20, this is not essential. For example, a crimp terminal crimped to the end of the electric wire 12 may be accommodated.

It should be noted that the configurations described in the above embodiments and the modifications can be appropriately combined as long as they do not conflict with each other. For example, it is conceivable that the exterior member 30 is formed by combining a plurality of sheet materials having different functions.

Although the present invention has been described in detail as described above, the above description is an example in all aspects, and the present invention is not limited thereto. It is understood that innumerable variations not illustrated can be assumed without departing from the scope of the present invention.

10 Wire harness 12 Wire 14 Core wire 16 Insulation coating 20 Connector 21 Connector housing 22 Hole 23 First member 24 Second member 26 Pressure welding terminal 27 Pressure welding part 28 Opposite side connection part 30 Exterior member 31a One main surface 31b The other main surface 32 Slit 40 Sewing thread 50 Fixing member 52 Hole 54 Pillar part 56 Wing part 70 Rod-shaped member 80 Needle 82 Hole 84 Upper thread 85 Wheel 86 Lower thread 90 Bobbin

Claims (6)

The exterior member formed in the form of a sheet and
At least one electric wire arranged on one main surface side of the exterior member and fixed to the one main surface, and
The wiring target member to be the wiring target of the electric wire and the wiring target member
With
The exterior member to which the electric wire is fixed is arranged on the wiring target member so that the electric wire extends along the longitudinal direction of the wiring target member.
The line target member is a rod-shaped member having a circular outer surface in a cross section orthogonal to the longitudinal direction.
The exterior member has a region that is in contact with the member to be arranged while being curved in a circular shape along the surface around a portion having a circular outer surface.
A wire harness wiring structure in which the electric wire and the exterior member are fixed at a plurality of positions spaced apart along the extending direction of the electric wire on the main surface of the exterior member. The wire harness wiring structure according to claim 1.
The wiring target member is a reinforcement, which is a wiring structure of a wire harness. The wire harness wiring structure according to claim 2.
A wire harness wiring structure in which the exterior member has a portion wound around the entire circumference of the reinforcement so that one end and the other end in the width direction of the exterior member overlap. The wire harness wiring structure according to any one of claims 1 to 3.
A part of the exterior member along the extending direction of the electric wire is a region bent around the surface of the wiring target member, and the extension of the electric wire among the exterior members. A wire harness wiring structure in which at least some other area along the direction of presence is flat. The wire harness wiring structure according to any one of claims 1 to 4.
A wire harness wiring structure in which the exterior member is located closer to the wiring target member than the electric wire in a region where the exterior member is bent around the wiring target member along its surface. The wire harness wiring structure according to any one of claims 1 to 4.
A wire harness wiring structure in which the exterior member is located outside the electric wire in a region where the exterior member is bent around the line target member along its surface.

Images