JP2008226587A - Manufacturing method of automobile wire harness, and automobile wire harness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a harness have a small diameter by using a hydraulic tape as a sheath material in place of a protector composed of a resin mold. <P>SOLUTION: The hydraulic tape 11 is wound around a wire group W in which a plurality pieces of wires w are converged, water is absorbed into the hydraulic tape 11 and it is cured, the wire group W is direction regulated by the hydraulic tape 11, and protected. A plane part 11a abutted on an automotive body panel is installed at least at a part of the outer peripheral face of the hydraulic tape 11 wound around the wire group W. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an automotive wire harness method and an automotive wire harness, and more specifically, eliminates the need for a protector made of a resin molded product as an exterior material of the wire harness and reduces the diameter of the wire harness.

In order to protect and restrict the direction of the wire harness used for wiring various electrical components mounted on the automobile, a protector made of a resin molded product that accommodates the wire harness is provided.
The protector includes a main body that accommodates the wire harness and a lid that closes the opening of the main body, and the main body and the lid are coupled by lock coupling to form a cylindrical body that penetrates the wire harness.
The present applicant provides this type of protector in Japanese Patent Laid-Open No. 2006-25515 (Patent Document 1) and the like.

  However, as shown in FIG. 11, when a protector 1 made of a resin molded product is further packaged on a wire harness W / H obtained by winding a plurality of electric wires w around a tape T and converged, the protector exterior portion of the wire harness has a large diameter. There is a problem that it can not be routed in a narrow space of the car.

JP 2006-25515 A

  This invention is made | formed in view of the said problem, and it makes it the subject to reduce a wire harness diameter by using a hydraulic tape as an exterior material instead of the protector which consists of a resin molded product.

In order to solve the above-mentioned problem, the present invention, as a first invention, wraps a focusing and protective hydraulic tape around the outer periphery of the group of wires,
After the hydraulic tape is impregnated with water, the tape winding portion is inserted into a mold cavity and cured to a required shape, or the tape winding portion is inserted into the mold cavity to A method of manufacturing a wire harness for an automobile is provided, which is impregnated with water, then impregnated with water, clamped, and cured to a required shape.

The hydraulic tape is not particularly limited as long as it is cured when water is absorbed. For example, a knitted glass fiber or a polyester fiber impregnated with a polyurethane resin is preferably used.
In addition, when an adhesive layer is provided on one surface of the hydraulic tape, when the electric wire group is wound with the hydraulic tape, the electric wire group in the winding region of the hydraulic tape needs to be wrapped in advance with the adhesive tape and converged. The number of work steps and parts can be reduced.

As described above, since the hydraulic tape before curing has flexibility, it may be spirally wound around the outer periphery of the electric wire group as a thin tape shape, or wound around the electric wire group from the direction perpendicular to the axis as a sheet shape. Also good.
The portion around which the water curable tape is wound is inserted into the cavity of the mold, and the water curable tape having absorbed water is cured into a required shape along the mold surface of the cavity. In this way, by curing the water curable tape wound around the wire group into a required shape, the guide has the same function as the protector of the resin molded product that is sheathed on the wire group, that is, a guide that regulates the wiring direction of the wire group. The function and the protection function for the wire group are given.

  After the water is absorbed by the wire group, it may be inserted into the cavity of the mold. However, a water supply passage is provided in the mold, and the tape winding portion is accommodated in the mold before the hydraulic tape If you pour water, you can reliably pour water only on the required places. And since it is not made to absorb water in a hydraulic tape until it accommodates in a metal mold | die, it can prevent that a hydraulic tape hardens | cures before accommodating in a metal mold | die.

  As described above, according to the wire harness manufacturing method of the present invention, rather than inserting the outer wire group of the wire harness into the protector made of a resin molded product, the water curable tape is wound around the electric wire group of the wire harness. The water curable tape absorbs water and is cured to a required shape by a mold to form an exterior material equivalent to a protector. This cured water curable tape can be closely attached to the outer periphery of the electric wire group without any gap, and does not enlarge the outer shape of the wire harness as compared with the case where a protector made of a resin molded product is externally provided. In addition, when the wiring route of the wire harness is narrow, the wire harness can be routed by designing the mold so as to be arranged in the narrow route.

As a second invention, as a protector of the electric wire group, a hydraulic tape wound around the outer periphery of the electric wire group is used, and the hydraulic tape is cured in a shape that regulates the wiring direction of the electric wire group, In addition, the present invention provides an automotive wire harness characterized in that a flat portion that is brought into contact with a vehicle body panel is provided on at least a part of the outer peripheral surface of the hydraulic tape.
The automobile wire harness can be most easily manufactured by the manufacturing method of the first invention, but the manufacturing method is not limited as long as it can be manufactured by other methods.

According to the above configuration, the hydraulic tape wound around the electric wire group absorbs water and the hydraulic tape is sufficiently cured, so that the wiring direction of the wire harness can be regulated by the hydraulic tape, The wire harness can be protected from external interference materials. Thereby, since the protector which consists of a resin molded product quoted by the prior art example becomes unnecessary, and only the hydraulic tape which consists of a thin tape material is wound, a wire harness can be reduced in diameter.
In addition, since a flat portion that comes into contact with the vehicle body panel is provided on at least a part of the outer peripheral surface of the hydraulic tape wound around the electric wire group, by arranging the flat portion along the vehicle body panel, the wire The harness can be routed in a stable state.

It is preferable that flat portions are provided on opposite sides of the outer peripheral surface of the hydraulic tape so that the cross-sectional shape in the direction perpendicular to the axis of the electric wire group is flat and can be routed in a narrow space of an automobile.
According to the above configuration, since the cross-sectional shape of the wire harness is matched with the wiring space, the cross-sectional shape is retained by the hydraulic tape. It is possible to make the wiring harness easier to be arranged by making it easy to route.

It is preferable that the hydraulic tape is wound around a straight portion, a bent portion, or a branch portion of the electric wire group.
Since the direction regulation is particularly important for the bent part and branch part of the wire group, many protectors made of resin molded products have been used in the past, but it is easy to regulate the bent part and branch part with the hydraulic tape. can do.

As described above, according to the present invention, the hydraulic tape wound around the electric wire group is absorbed with water and the hydraulic tape is cured, so that the wiring direction of the wire harness can be regulated by the hydraulic tape. At the same time, the wire harness can be protected from an external interference material. Thereby, the protector which consists of a resin molded product becomes unnecessary, and a wire harness can be reduced in diameter.
In addition, since a flat portion that comes into contact with the vehicle body panel is provided on at least a part of the outer peripheral surface of the hydraulic tape wound around the electric wire group, by arranging the flat portion along the vehicle body panel, the wire The harness can be routed in a stable state.

Embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a first embodiment of the present invention.
The automotive wire harness W / H of this embodiment is routed in a straight line on the rocker portion on the side of the vehicle floor.

The wire harness W / H is composed of a group of electric wires W which is obtained by roughly winding a bundling tape (not shown) provided with an adhesive layer on a plurality of electric wires w and converging. A hydraulic tape 11 in which a knitted glass fiber is impregnated with a polyurethane resin is wound in half wrap.
The hydraulic tape 11 absorbs water and is cured, and as shown in FIG. 1, the electric wire group W is linearly regulated and the outer periphery is protected. Further, a flat portion 11 a that is in contact with the vehicle body panel is provided on a part of the outer peripheral surface of the hydraulic tape 11 wound around the electric wire group W.

When wiring the wire harness W / H to the vehicle, as shown in FIG. 2 (A), the flat portion 11a of the hydraulic tape 11 is brought into contact with the vehicle body panel P and routed along the vehicle. Yes.
Further, at the vehicle body fixing position of the wire harness W / H, as shown in FIG. 2 (B), the substrate portion 20a of the clamp 20 is fixed by winding the tape (T) along the flat surface portion 11a of the hydraulic tape 11, A vehicle body locking portion 20b protruding from the board portion 20a is locked and fixed to the periphery of the through hole Pa of the vehicle body panel P.
When the wire harness W / H is not fixed to the vehicle body at the portion where the hydraulic tape 11 is wound, the entire flat portion 11a of the hydraulic tape 11 is brought into contact with the vehicle body panel P.

  A mold for manufacturing the wire harness W / H includes a lower mold 40 and an upper mold 41. A cavity 40a of the lower mold 40 includes a flat portion forming portion 40b formed of a flat surface and an arc portion along the outer periphery of the electric wire group W. 40c.

Next, the manufacturing direction of the wire harness W / H will be described.
First, the wire group W is formed by roughly winding a binding tape around the plurality of wires w.
Next, as shown in FIG. 3 (A), the uncured hydraulic tape 11 is wound around the required portion of the wire group W by half-wrapping.
Next, as shown in FIG. 3 (B), water 30 is applied to the hydraulic tape 11 wound around the electric wire group W by a sprayer, and before the hydraulic tape 11 is cured, the cabling 40a of the lower mold 40 has the electric wire group W. A portion around which the hydraulic tape 11 is wound is accommodated.
Next, when the upper die 41 is clamped to the lower die 40, the accommodated wire group W is pressed against the flat portion forming portion 40b to form the flat portion 11a, and the hydraulic tape 11 wound around the electric wire group W in this state is formed. Is cured.
Finally, the wire harness W / H is taken out from the mold.

According to the said structure, since the hydraulic tape 11 wound around the electric wire group W is made to absorb water and the hydraulic tape 11 is hardened, the wiring direction of the wire harness W / H is made by this hydraulic tape 11. In addition to being able to regulate, the wire harness W / H can be protected from external interference materials. This eliminates the need for a protector made of a resin molded product on the wire harness W / H and merely winds the hydraulic tape 11 made of a thin tape material, so that the diameter of the wire harness W / H is reduced. be able to.
Further, since the flat surface portion 11a to be brought into contact with the vehicle body panel P is provided on the outer peripheral surface of the hydraulic tape 11 wound around the electric wire group W, by arranging the flat surface portion 11a along the vehicle body panel P, The wire harness W / H can be routed in a stable state.

In addition, in this embodiment, although the plane part 11a is provided over the axial direction full length of the site | part which wound the hydraulic tape 11, as shown in FIG. 4, the plane part 11a is provided in a part of axial direction. The portion where the flat surface portion 11a is not provided may be an all-circular arc surface.
Further, as shown in FIG. 5, an adhesive layer 12 may be provided on one surface of the hydraulic tape 11 and wound around the electric wire group W so that the adhesive layer 12 is on the inner peripheral side. Thereby, tape winding for bundling the electric wire group W performed before winding the hydraulic tape 11 can be made unnecessary.

6 and 7 show a second embodiment of the present invention.
In this embodiment, the cross-sectional shape in the direction perpendicular to the axis of the portion around which the hydraulic tape 11 is wound is different from that of the first embodiment, and the flat portions 11a are provided on both sides of the outer peripheral surface of the hydraulic tape 11 facing each other. The cross-sectional shape of the wire harness W / H in the direction perpendicular to the axis is a flat shape. The flat portions 11a on both sides are brought into contact with the vehicle body panel P arranged in proximity, and the wire harness W / H is routed in a narrow space S sandwiched between the vehicle body panels P.
As shown in FIG. 7, the cavity 40a of the lower mold 40 of the mold for manufacturing the wire harness W / H is composed of an opposing flat surface portion forming portion 40b and an arc portion 40c continuous between the flat surface portion forming portions 40b. Become.

According to the said structure, the outer shape of the wire harness W / H can be hold | maintained in the shape match | combined with the wiring space of the motor vehicle by the hardened hydraulic tape 11, and the wire harness W / H can be easily wired in the narrow space S. can do.
In addition, since another structure and an effect are the same as that of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

FIG. 8 shows a third embodiment of the present invention.
In the present embodiment, the hydraulic tape 11 is wound around the bent portion instead of the straight portion of the electric wire group W, and the bent state of the wire harness W / H is held by the cured hydraulic tape 11. The horizontal portion 11a is provided on the bent outer peripheral side, and the horizontal portion 11a is arranged in contact with the vehicle body panel P on the outer peripheral side.
Thus, even in the bent portion of the wire harness W / H, the hydraulic tape 11 can be easily routed while maintaining the bent shape of the wire harness W / H.
In addition, since another structure and an effect are the same as that of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

FIG. 9 shows a fourth embodiment of the present invention.
In the present embodiment, the hydraulic tape 11 is wound around the branch portion of the electric wire group W, the plane portion 11a is provided on the side opposite to the branch line W / H-2 lead side of the trunk line W / H-1, and the vehicle body panel P The cable is placed in contact with the cable.
As described above, the branch shape of the wire harness W / H can be easily maintained by the hydraulic tape 11 even at the branch portion of the wire harness W / H.
In addition, since another structure and an effect are the same as that of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

FIG. 10 shows a fifth embodiment of the present invention.
In this embodiment, the manufacturing method of the wire harness W / H is different from that of the above embodiment, and the hydraulic tape 11 wound around the electric wire group W after the electric wire group W is accommodated in the cavity 40a of the lower mold 40 is water. To cure.

  The lower mold 40 used in the present embodiment is provided with a flow passage 40d penetrating from the outer surface to the cavity 40a, and a pipe 45 for introducing water is connected to the flow passage 40d.

Next, the manufacturing method of the wire harness W / H of this embodiment is demonstrated.
First, the hydraulic tape 11 is wound around a required portion of the electric wire group W, and the wound portion is accommodated in the cavity 40a of the lower mold 40 without applying water.
Next, the upper die 41 is clamped to the lower die 40 to make the electric wire group W into a required shape, and then water is introduced into the cavity 40a through the pipe 45 and the flow passage 40d, and the hydraulic tape 11 wound around the electric wire group W is wound. Allow water to absorb and cure.
Finally, the wire harness W / H is taken out from the mold.

According to the above-described configuration, water is poured after the electric wire group W is accommodated in the cavity 40a of the lower mold 40, so that water can be reliably poured only in necessary places, and the cavity 40a of the lower mold 40 can be used. Since the hydraulic tape 11 does not absorb water until it is accommodated in the mold, it can be prevented that the hydraulic tape 11 is cured before being accommodated in the mold.
In addition, since another structure and an effect are the same as that of 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

The wire harness of 1st Embodiment of this invention is shown, (A) is a perspective view, (B) is AA sectional view taken on the line. (A) is sectional drawing which shows the state which wired the wire harness along the vehicle body panel, (B) is sectional drawing which shows the vehicle body fixing | fixed part of a wire harness. (A)-(C) are drawings which show the manufacturing method of a wire harness. It is drawing which shows the modification of 1st Embodiment. It is drawing which shows the other modification of 1st Embodiment. It is drawing which shows 2nd Embodiment of this invention. It is drawing which shows the metal mold | die for manufacturing the wire harness of 2nd Embodiment. It is drawing which shows 3rd Embodiment of this invention. It is drawing which shows 4th Embodiment of this invention. It is drawing which shows 5th Embodiment of this invention. It is drawing which shows the conventional problem.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Hydraulic tape 11a Plane part 20 Clamp 30 Water 40 Lower mold 40a Cavity 40b Plane part formation part 40c Arc part 41 Upper mold P Car body panel S Narrow space w Electric wire W Electric wire group W / H Wire harness

Claims (5)

Wrap a bundling and protective hydraulic tape around the wire group,
After the water has been absorbed by the hydraulic tape, the tape winding portion is inserted into the mold cavity and cured to the required shape, or the tape winding portion is inserted into the mold cavity to The manufacturing method of the wire harness for motor vehicles characterized by absorbing and making it harden | cure to a required shape.   As a protector of the electric wire group, a hydraulic tape wound around the outer periphery of the electric wire group is used, and the hydraulic tape is cured in a shape that regulates the wiring direction of the electric wire group, and the hydraulic property A wire harness for an automobile, wherein a flat portion that is brought into contact with a vehicle body panel is provided on at least a part of an outer peripheral surface of the tape.   The planar part of the said hydraulic tape is provided in both the outer surfaces which oppose, The cross-sectional shape of the axis orthogonal direction of the said electric wire group is flat shape, and it can be wired in the narrow space in a motor vehicle. Automotive wiring harness.   The automotive hydraulic harness according to claim 2 or 3, wherein the hydraulic tape is wound around a straight portion, a bent portion, or a branch portion of the electric wire group.   The automotive wire harness according to any one of claims 2 to 4, which is manufactured by the manufacturing method according to claim 1.

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