JP2024011045A - Wire harness and manufacturing method for the same - Google Patents

Abstract

To provide an inexpensive wire harness that can be attached to a body to be attached well and that is sufficiently protected at appropriate points and a manufacturing method for the same that can reduce assembly man-hours.SOLUTION: A wire harness 11 includes a protective member 17 that protects a wire 13 to be routed to a vehicle. The protective member 17 has a tape 25 that is attached from one side to at least a portion of the wire 13 in the longitudinal direction and a self-adhesive sheet 31 that is attached to the wire 13 from the opposite side of the tape 25 to the wire 13. The tape 25 is a PVC tape that has a function of absorbing an external shock.SELECTED DRAWING: Figure 2

Description

The present invention relates to a wire harness and a method for manufacturing a wire harness.

Wire harnesses that are attached to the body or door of a vehicle are wired together on a wiring board, and a connector is attached to the end of the wire, a protector is attached to the branch, By wrapping the harness with tape while attaching a protective material (sponge, etc.) for protection, the harness is formed into a predetermined wiring configuration along the harness wiring route. This wire harness is attached by locking a plurality of clamps to clamp attachment holes drilled in the body or door.

As such a wire harness, Patent Document 1 describes a wire harness made of a self-adhesive sheet that can bond electric wires wired in a predetermined wiring form to an attached object only by aligning their adhesive surfaces. A structure is disclosed in which the wiring configuration is maintained by sandwiching and packaging the wiring with single-sided adhesive sheets.

Japanese Patent Application Publication No. 2012-161234

In the above wire harness, the electric wires are protected by pasting a self-adhesive sheet. However, for example, it is inappropriate to use a self-adhesive sheet in a location where a protective function is unnecessary, such as a location that does not interfere with the object to be attached, in order to provide an inexpensive wire harness.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide an inexpensive wire harness that can be easily attached to an object and that is sufficiently protected at appropriate locations, and that reduces the number of assembly steps. An object of the present invention is to provide a method for manufacturing a wire harness that can reduce the amount of wire harnesses.

In order to achieve the above-mentioned object, a wire harness and a method for manufacturing a wire harness according to the present invention have the following features.

A wire harness equipped with a protection member that protects electric wires routed in a vehicle,
The protection member is
a first member attached from one side to at least a portion of the electric wire in the longitudinal direction;
a second member attached to the electric wire from the opposite side of the first member;
has
A wire harness, wherein at least the first member of the first member and the second member is a tape having a function of absorbing external shock.

A wire harness equipped with a protection member that protects electric wires routed in a vehicle,
The protection member is
a first member attached from one side to at least a portion of the electric wire in the longitudinal direction;
A wire harness, comprising: a second member attached to the electric wire from the opposite side of the first member.

A method for manufacturing a wire harness including a protective member for protecting electric wires routed in a vehicle, the method comprising:
The protection member is
a first member attached from one side to at least a portion of the electric wire in the longitudinal direction;
a second member attached to the electric wire from the opposite side of the first member;
has
In the method for manufacturing a wire harness, the first member is formed by attaching a tape wound into a roll in the longitudinal direction of the electric wire.

According to the present invention, it is possible to provide an inexpensive wire harness that can be easily attached to an object, and in which appropriate parts are sufficiently protected, and a method of manufacturing the wire harness that can reduce the number of assembly steps.

The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the mode for carrying out the invention (hereinafter referred to as "embodiment") described below with reference to the accompanying drawings. .

FIG. 1 is a plan view of a wire harness according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of section A shown in FIG. 1 in the direction along the wire harness near the clamp. FIG. 3 is a cross-sectional view taken in a direction orthogonal to FIG. FIG. 4 is a cross-sectional view of a wire harness attached to an object to be attached via a clamp. FIG. 5 is an exploded view of the wire harness shown in FIG. 1. FIG. 6 is an exploded perspective view of a wire harness according to a second embodiment of the present invention. FIG. 7 is a perspective view of the wire harness shown in FIG. 6 after assembly. FIG. 8 is a perspective view of a main part of a wire harness according to a third embodiment of the present invention.

Specific embodiments of the present invention will be described below with reference to each figure.

FIG. 1 is a plan view of a wire harness 11 according to a first embodiment of the present invention.
As shown in FIG. 1, the wire harness 11 includes electric wires 13 wired in a predetermined wiring configuration and covered with a protective member 17. The electric wires 13 of the wire harness 11 include, for example, a plurality of trunk portions 19 wired in a predetermined wiring form that matches the wiring route of a vehicle (not shown), and a branch portion 21 branched from the trunk portion 19. A connector 23 is attached to the terminal portion 19a of the main line portion 19 and the terminal portion 21a of the branch portion 21 to be connected to auxiliary equipment etc. mounted on the vehicle.

2 is a cross-sectional view in the direction along the electric wire 13 near the clamp in part A shown in FIG. 1, and FIG. 3 is a cross-sectional view in the orthogonal direction in FIG.
In this embodiment, the protection member 17 includes a tape (first member) 25 and a self-adhesive sheet (second member) 31.

The tape 25 is a PVC tape (polyvinyl chloride tape) having a thickness of 0.24 mm or less and an elongation rate of 200% or more in the longitudinal direction. In addition, as the tape 25, one having an elongation rate of 300% or more is more preferable. The tape 25 includes a tape base material 26 and an adhesive material 27 applied to the entire back surface of the tape base material 26.

In the self-adhesive sheet 31, a surface material 33 is laminated on the surface of a sheet base material 32 made of a PP (polypropylene) foam material, and a special adhesive layer 34 is laminated on the back surface. For the surface material 33, kraft paper, liner board, PET (polyethylene terephthalate) film, PP film, nonwoven fabric, etc. can be used. Note that as the self-adhesive sheet 31 according to the present invention, a known adhesive sheet in which an adhesive layer is laminated on the back side of a sheet base material can also be used.

In this embodiment, the tape 25 and the self-adhesive sheet 31 constituting the protective member 17 can be easily pasted together by simply aligning their respective adhesive surfaces (back surfaces), eliminating the need for glue or binding tape. can. Further, in the protection member 17, the adhesive material 27 of the tape 25 and the special adhesive layer 34 of the self-adhesive sheet 31 do not stick to the electric wire 13 or the worker's fingers, and do not reduce assembly workability. .

In this embodiment, the outer shape of the tape 25 is pre-formed to match the shape of the wiring route of the electric wire 13, except for the free end portions 19a and 21a near the connector 23 other than the section F in FIG. The self-adhesive sheet 31, like the tape 25, is formed into a shape that fits together with the tape 25. Sheet holes 41 are bored at predetermined positions in the self-adhesive sheet 31. A clamp 43 is inserted into this seat hole 41. The self-adhesive sheet 31 with the clamp 43 inserted into the sheet hole 41 constitutes a clamp/sheet assembly. Note that the external shapes of the tape 25 and the sheet 29 are not limited to the main portion 19, the branch portion 21, etc., and may be formed in a wide variety of shapes depending on the purpose and use.

As shown in part F of FIG. 1, by forming the protective member 17 into a shape that also surrounds the connector 23 and the terminal part 21a of the electric wire 13, the connector 23 and the terminal part 21a can be made rigid, and the terminal part 21a can be made rigid. The portion 21a can be protected from contact with an object to be attached (for example, a door panel). Of course, the protection member 17 can also be formed into a substantially rectangular shape that encloses all the connectors 23 and the terminal portions 19a, 21a of the electric wires 13 at once.

The clamp 43 has a circular sealing surface pressure generating portion 47 having convex pieces 45 at both ends in the diametrical direction. A support shaft 49 is provided upright on one surface of the seal surface pressure generating section 47, and a pair of elastic locking claws 51 are formed at the tip thereof. In this clamp 43, a support shaft 49 and an elastic locking claw 51 are inserted into the sheet hole 41 of the self-adhesive sheet 31. Therefore, the seal surface pressure generating section 47 is held between the self-adhesive sheet 31 and the electric wire 13.

In this embodiment, the seal surface pressure generating section 47 has a circular shape with the convex piece 45, but it is not limited to a circular shape, and may take various shapes as long as sealing performance is ensured. Can be done. Although the protruding piece 45 may be omitted, the area of the seal surface pressure generating portion 47 can be substantially expanded by the protruding piece 45, and the holding force of the clamp 43 against the protection member 17 can be increased.

Clamp 43 can be attached in different configurations. For example, as shown in FIGS. 2 and 3, the electric wire 13 and the clamp 43 can be vertically stacked and attached. Sections A and B shown in FIG. 1 correspond to this attachment section.

Alternatively, the position of the seat hole 41 may be shifted (offset) from the wiring position X of the electric wire 13, and the electric wire 13 and the clamp 43 may be attached side by side. In this case, the seal surface pressure generating portion 47 of the clamp 43 is directly sandwiched between the tape 25 and the self-adhesive sheet 31. Since the clamp 43 is offset from the wiring position X of the electric wire 13 (separation distance indicated by Δt in FIG. 1), the height of the clamp 43 and the height of the electric wire 13 are no longer integrated, and the electric wire 13 from the attached object is The installation height can be kept low. Sections C and D shown in FIG. 1 correspond to this attachment section.

Here, the support shaft 49 of the clamp 43 inserted through the seat hole 41 is preferably thinner than the hole diameter of the seat hole 41 so that the pitch can be finely adjusted. In this case, as shown in FIGS. 2 and 3, a gap 48 is created between the seat hole 41 and the support shaft 49, so that the clamp 43 can be moved relative to the seat hole 41, allowing fine adjustment of the clamp pitch, etc. becomes possible. Note that the seat hole 41 may be an elongated hole that is long in the direction of pitch adjustment. However, the basic positions of the sheet holes 41 are integrally determined by pressing or the like when the self-adhesive sheet 31 is molded. As a result, the clamp position can be determined with extremely high precision compared to the conventional manual attachment of the clamp 43.

In this way, the wire harness 11, in which the electric wire 13 is covered with the protective member 17, is attached to the object to be attached, such as a body or door, at a predetermined pitch using the plurality of clamps 43, and arranged. be searched.

FIG. 4 is a cross-sectional view of the wire harness 11 attached to the attachment target 53 via the clamp 43.
In this embodiment, the surface material 33 of the self-adhesive sheet 31 of the wire harness 11 has waterproof properties. That is, the surface material 33 is made of the above-mentioned PP or PET, for example. The clamp 43 is formed with the above-described seal surface pressure generating portion 47 that brings the surface material 33 of the self-adhesive sheet 31 into close contact with the object 53 to be attached when the clamp 43 is attached to the object 53 to be attached.

In the wire harness 11, when the clamp 43 is attached to the clamp hole 57 of the object to be attached 53, the seal surface pressure generating section 47 of the clamp 43 presses the surface material 33 of the self-adhesive sheet 31 to the object to be attached 53. The sealing surface pressure generating section 47 applies sealing pressure to the self-adhesive sheet 31 on a circular surface centered around the support shaft 49 of the clamp 43 . As a result, a wide contact surface with the attached body 53 can be obtained, the sealing surface 59 is stabilized, and reliable waterproofness is ensured. In addition, since multiple clamps 43 are attached to a single self-adhesive sheet 31 whose surface material 33 is waterproof, there is no need for packing for each clamp in areas where waterproofing is required, reducing the number of components and eliminating packing installation work. can do.

Next, a method for assembling the above wire harness 11 will be explained with reference to FIG.
FIG. 5 is an exploded view of the wire harness 11 shown in FIG. 1.
To assemble the wire harness 11, first, a self-adhesive sheet 31 is spread on a workbench or the like. The self-adhesive sheet material 31 has the special adhesive layer 34 on top. This self-adhesive sheet 31 is used as an underlay, and the electric wires 13 that have been pre-wired in a predetermined wiring configuration (in this embodiment, a wiring configuration matching the wiring route of the door) are placed thereon. Although the clamps 43 are inserted in advance into the sheet holes 41 of the self-adhesive sheet 31, the clamps 43 may be inserted into the sheet holes 41 and assembled together with the placement of the electric wires 13.

Once the electric wire 13 is placed, tape 25 is placed over it. The tape 25 is placed with the adhesive material 27 facing down. The tape 25 is wound into a roll, and the tape 25 wound into a roll is pulled out and applied to the electric wire 13 in the longitudinal direction. Then, the tape 25 and the self-adhesive sheet 31 are crimped together with the electric wire 13 and the seal surface pressure generating portion 47 of the clamp 43 being sandwiched. As a result, a wire harness 11 is completed in which a plurality of clamps 43 are attached at a predetermined pitch, and at the same time, the electric wire 13 is clamped and held by the protection member 17 (see FIG. 1).

According to the wire harness 11 according to the first embodiment, the tape (first member) 25 is attached to the electric wire 13 from one side, and the self-adhesive is attached to the electric wire 13 from the opposite side to the tape 25. The electric wire 13 can be protected by the protection member 17 having the sheet (second member) 31. Moreover, since PVC tape, which has the function of absorbing external shocks, is used as the tape 25, the assembly workability is equivalent to that of a wire harness that includes a protective member with a self-adhesive sheet pasted on both sides of the electric wire, and the object to be attached is The wiring harness can be made inexpensive while ensuring good workability for attaching to the 53.

Furthermore, since the highly durable self-adhesive sheet 31 side is the surface that comes into contact with the object to be wired, such as the object to be attached 53, the wires can be protected more effectively.

Further, according to the method for manufacturing the wire harness 11, since the tape 25 wound in a roll is pasted in the longitudinal direction of the electric wire 13, it can be manufactured by an automatic machine and can contribute to reducing the number of man-hours in the manufacturing process.

Note that in the wire harness 11 of the above embodiment, a configuration has been described in which the protective member 17 is sheathed over substantially the entire wire 13 in order to maintain the wiring configuration of the wire 13, but the wire harness according to the present invention However, the present invention is not limited to this, and the electric wire 13 may be partially covered with the protective member 17.

Next, the wire harness according to the second embodiment will be described.
FIG. 6 is an exploded perspective view of a wire harness 71 according to a second embodiment of the present invention, and FIG. 7 is a perspective view of the wire harness 71 shown in FIG. 6 after being assembled. Note that the same components as those of the wire harness 11 of the first embodiment are given the same reference numerals and detailed explanations are omitted.

In the wire harness 71 shown in FIGS. 6 and 7 , a portion of the electric wire 13 is covered with a protective member 70 .
The protection member 70 used in the second embodiment includes a tape (first member) 73 and a self-adhesive sheet (second member) 75 (see FIG. 6). The tape 73 includes a tape base material 26 and an adhesive material 27 applied to the entire back surface of the tape base material 26. The outer shape of the tape 73 is matched to a portion of the wiring path shape corresponding to the bending portions 13A, 13B, and straight portions 13C of the electric wire 13 in FIG. The self-adhesive sheet 75 is a sheet in which the surface material 33 and the special adhesive layer 34 are laminated on the front and back surfaces of the sheet base material 32, and is formed into a shape such that the tape 73 and the adhesive surfaces (back surfaces) are brought together. A sheet hole 72 is bored at a predetermined position of the self-adhesive sheet 75 (a position having a predetermined distance from the straight line portion 13C). The clamp 43 is inserted into the seat hole 72. The self-adhesive sheet 75 with the clamp 43 inserted into the sheet hole 72 constitutes a clamp/sheet assembly.

To assemble the wire harness 71, first, the self-adhesive sheet 75 is laid on a workbench or the like with the special adhesive layer 34 facing up. This self-adhesive sheet 75 is used as an underlay, and the bent portions 13A, branched portions 13B, and straight portions 13C of the electric wires 13, which have been previously wired in a predetermined wiring configuration, are placed thereon.

Once the electric wire 13 is placed, the tape 73 wound into a roll is pulled out from above and placed over the electric wire 13 in the longitudinal direction with the adhesive material 27 facing down. Then, the tape 73 and the self-adhesive sheet 75 are crimped together with the electric wire 13 and the seal surface pressure generating portion 47 of the clamp 43 being sandwiched. Thereby, as shown in FIG. 7, a wire harness 71 is completed in which the clamp 43 is attached and the electric wire 13 is held by the protection member 70 at the same time.

Therefore, the wire harness 71 of the second embodiment corresponds to the bending part 13A, the branching part 13B, and the seat hole 72 of the electric wire 13, which serves as the attachment reference part with respect to the plurality of fixed parts of the object to be attached 53 when the harness is attached. Since the outer shape portions are formed in advance on the protection member 70 by press working or the like, high accuracy in spacing between these attachment reference portions can be obtained.

Next, the wire harness according to the third embodiment will be described.
FIG. 8 is a perspective view of a main part of a wire harness 81 according to a third embodiment of the present invention.
In the wire harness 81 shown in FIG. 8, only the vicinity of the bending point 13A of the electric wire 13 is covered with the protective member 80.
The protection member 80 used in the third embodiment includes a tape (first member) 83 and a self-adhesive sheet (second member) 85. The tape 83 includes a tape base material 26 and an adhesive material 27 applied to the entire back surface of the tape base material 26. The tape 83 is formed so that its outer shape matches a portion of the wiring path shape corresponding to the bending point 13A of the electric wire 13. The self-adhesive sheet 85 is a sheet in which the surface material 33 and the special adhesive layer 34 are laminated on the front and back surfaces of the sheet base material 32, and is formed into a shape such that the tape 83 and the adhesive surfaces (back surfaces) are combined.

To assemble the wire harness 81, first, a self-adhesive sheet 85 is laid on a workbench or the like with the special adhesive layer 34 facing up. This self-adhesive sheet 85 is used as an underlay, and the bent portion 13A of the electric wire 13, which has been pre-wired in a predetermined wiring configuration, is placed thereon.

Once the electric wire 13 is placed, the tape 83 wound in a roll is pulled out from above, and is placed over the electric wire 13 in the longitudinal direction with the adhesive material 27 facing down, and the tape 73 and the self-adhesive sheet 75 are crimped. Thereby, the wire harness 81 in which the electric wire 13 is held by the protection member 80 is completed.

As described above, in the wire harness 81 of the third embodiment, the protection member 80 is sheathed on a part of the electric wire 13 that includes at least the bent part 13A that becomes the attachment reference part with respect to the fixed part of the attached body 53. When attaching the harness, the attachment reference portion can be easily positioned with respect to the fixed portion of the wiring route of the attached body 53, and the attachment work efficiency is improved.

Note that the attachment reference portion for the fixed portion of the attached body 53 is not limited to the bending portion 13A of the electric wire 13, but may include a protection member 80 that is molded to fit at least a portion of the electric wire 13 including at least the branching portion 13B. Alternatively, a clamp 43 may also be provided.

In addition, in the protective members 17, 70, 80 of the wire harnesses 11, 71, 81 of the first to third embodiments, the self-adhesive sheets 31, 75, 85 are particularly free from interference with the attached body 53. Alternatively, the tapes 25, 73, 83 may be used and attached to each other as the first and second members from the front and back sides of the electric wire 13. In either case, the protective members 17, 70, 80 can be formed in a shorter time than it takes to wind the tape around the electric wire 13.

Furthermore, in the protection members 17, 70, 80 of the wire harnesses 11, 71, 81 of the first to third embodiments, the tapes 25, 73, 83 may be bonded together in two or more layers, if necessary. . This makes it possible to cope with areas where the interference is large enough to require the self-adhesive sheets 31, 75, 85, but where there is a need to slightly increase protection against interference.

Further, along with the protective members 17, 70, 80 of the wire harnesses 11, 71, 81, a tape material such as vinyl tape may be wound and reinforced as necessary.

Note that the present invention is not limited to the embodiments described above, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiments are arbitrary as long as the present invention can be achieved, and are not limited.

Here, the features of the wire harness and the method of manufacturing the wire harness according to the embodiment of the present invention described above are briefly summarized and listed below in [1] to [4].
[1] A wire harness (11, 71, 81) including a protection member (17, 70, 80) that protects an electric wire (13) routed in a vehicle,
The protection member (17, 70, 80) is
a first member (tape 25, 73, 83) attached from one side to at least a portion of the electric wire (13) in the longitudinal direction;
a second member (self-adhesive sheet 31, 75, 85) that is attached to the electric wire (13) from the opposite side of the first member (tape 25, 73, 83);
has
At least the first member (tape 25, 73, 83) of the first member (tape 25, 73, 83) and the second member (self-adhesive sheet 31, 75, 85) absorbs external impact. Wire harness is a tape with functions.

According to the wire harness having the configuration [1] above, the protection includes a first member that is attached to the electric wire from one side, and a second member that is attached to the electric wire from the opposite side to the first member. The wire can be protected by the member. Moreover, since a tape having the function of absorbing external shock is used as at least the first member, the assembly workability is equivalent to that of a wire harness that includes a protective member in which both the first member and the second member are self-adhesive sheets. And, it is possible to obtain an inexpensive wire harness while ensuring good workability for attaching to the object to be attached.

[2] The second member (31, 75, 85) is a self-adhesive sheet,
The self-adhesive sheet (31, 75, 85) becomes the surface that comes into contact with the wiring target,
The wire harness according to [1] above.

According to the wire harness having the configuration [2] above, the electric wire can be protected by the protection member including the first member made of tape and the second member made of a self-adhesive sheet. Further, since the second member side made of a highly durable self-adhesive sheet is the surface that comes into contact with the wiring target such as the object to be attached, the electric wire can be protected more effectively.

[3] A wire harness (11, 71, 81) including a protection member (17, 70, 80) that protects an electric wire (13) routed in a vehicle,
The protection member (17, 70, 80) is
a first member (tape 25, 73, 83) attached from one side to at least a portion of the electric wire (13) in the longitudinal direction;
a second member (self-adhesive sheet 31, 75, 85) that is attached to the electric wire (13) from the opposite side of the first member (tape 25, 73, 83);
Wire harness with.

According to the wire harness having the configuration [3] above, the protection includes the first member attached to the electric wire from one side and the second member attached to the electric wire from the opposite side to the first member. The wire can be protected by the member. Therefore, the wire harness can be made at a low cost while ensuring the same assembly workability and good installation workability to the object to be attached as a wire harness including a protective member in which both the first member and the second member are self-adhesive sheets. .

[4] A method for manufacturing a wire harness including a protection member (17, 70, 80) that protects an electric wire (13) routed in a vehicle,
The protection member (17, 70, 80) is
a first member (tape 25, 73, 83) attached from one side to at least a portion of the electric wire (13) in the longitudinal direction;
a second member (self-adhesive sheet 31, 75, 85) that is attached to the electric wire (13) from the opposite side of the first member (tape 25, 73, 83);
has
In the method of manufacturing a wire harness, the first member (tape 25, 73, 83) is formed by pasting a tape wound into a roll in the longitudinal direction of the electric wire (13).

According to the method for manufacturing a wire harness having the configuration [4] above, the first member is attached to the electric wire from one side, the second member is attached to the electric wire from the opposite side to the first member, It is possible to manufacture a wire harness in which electric wires are protected by a protection member having the following. In particular, since a tape having the function of absorbing external shock is used as at least the first member, assembly workability is equivalent to that of a wire harness that includes a protective member in which both the first member and the second member are self-adhesive sheets. Also, it is possible to manufacture an inexpensive wire harness that ensures good workability when attaching to the object to be attached. Moreover, since the first member is made of a tape wound into a roll and is attached in the longitudinal direction of the electric wire, it can be manufactured by an automatic machine and can contribute to reducing the number of man-hours in the manufacturing process.

11,71,81 Wire harness 13 Electric wire 17,70,80 Protective member 25 Tape (first member)
31 Self-adhesive sheet (second member)

Claims (4)

A wire harness equipped with a protection member that protects electric wires routed in a vehicle,
The protection member is
a first member attached from one side to at least a portion of the electric wire in the longitudinal direction;
a second member attached to the electric wire from the opposite side of the first member;
has
At least the first member of the first member and the second member is a tape having a function of absorbing external shock.
wire harness. The second member is a self-adhesive sheet, and the self-adhesive sheet is the surface that comes into contact with the wiring target.
The wire harness according to claim 1. A wire harness equipped with a protection member that protects electric wires routed in a vehicle,
The protection member is
a first member affixed from one side to at least a portion of the electric wire in the longitudinal direction;
a second member attached to the electric wire from the opposite side of the first member;
wire harness. A method for manufacturing a wire harness including a protective member for protecting electric wires routed in a vehicle, the method comprising:
The protection member is
a first member attached from one side to at least a portion of the electric wire in the longitudinal direction;
a second member attached to the electric wire from the opposite side of the first member;
has
The first member is formed by pasting a tape wound into a roll in the longitudinal direction of the electric wire.
Method of manufacturing wire harness.

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