JP2008127022A - Tape material for binding wire harness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tape material having a bundling function of a wire bundle group, a protective function of the bundled wire group, and a preventive function of interference noise with other member. <P>SOLUTION: The tape material comprises a tape body 11 composed of two resin layers 11A and 11B, and a double-sided pressure-sensitive adhesive tape body 12 to be adhesively fixed to one side of the tape body 11. The first resin layer 11A of the tape body 11 is pressure-sensitively stuck to one side of the double-sided pressure-sensitive adhesive tape 12, and the second resin layer 11B is stuck to the other side of the first resin layer 11A, and the first resin layer 11A is more rigid than the second resin layer 11B. The first resin layer 11A is thinner than the second resin layer 11B. The tape material is wound around an outer peripheral surface of a wire harness W/H with the second resin layer 11B forming an outer surface side, and the double-sided pressure-sensitive adhesive tape 12 forming an inner surface side, respectively. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wire harness binding tape material that is wound around and bound to the outer periphery of a plurality of electric wire groups.

  Conventionally, as the main exterior material of the electric wire group, a tape material that is wound around and bundled around the outer periphery of a large number of electric wire groups, a round tube material that covers the outer periphery of the electric wire bundle and protects the electric wire from the edge of an external interference material, Furthermore, there is a resin corrugated tube that covers an electric wire group in a wiring area that requires wear resistance.

The tape material is a flat continuous band, and vinyl tape, Irax tape, silicon tape, soft urethane tape, paper tape, or the like is used.
The tube material has a cylindrical shape that covers the outer peripheral surface of the electric wire group, and includes a vinyl tube, an Irax tube, and the like.

  Further, when there is a burr or edge interference along the wiring route of the wire harness, a corrugated tube made of synthetic resin and having rigidity and strength is used. As shown in FIG. 5, the corrugated tube has a cross-sectional wave shape in which annular valleys 2 and peaks 3 are alternately continued in the axial direction (Japanese Patent Laid-Open No. 2006-230043, etc.). The corrugated tube 1 is provided with a slit 4 along the axial direction, and the slit 4 is opened to cover the electric wire group 5.

The tape material can be used regardless of the outer diameter of the electric wire group to be bound, but has a lower electric wire protection function than the corrugated tube.
However, since the size of the corrugated tube made of a resin molded product is standardized in stages, as shown in FIG. 5, when the wire group has a small diameter, there is a gap between the corrugated tube 1 and the wire bundle 5. appear. In that case, there is a problem that the corrugated tube has a play in the corrugated tube when the vehicle travels, and noise is generated, and the corrugated tube has a large diameter even though the electric wire group has a small diameter. . Further, as described above, the corrugated tube needs to be prepared in several sizes, and it takes time and effort to manage inventory, molds, production, and the like.

Furthermore, when a tube material is used as an exterior material, the wire group must be penetrated through the tube material, and there is a problem of poor workability.
In particular, when there is a possibility of noise generation due to interference between the other member and the wire harness, a soundproof sheet made of a foamed urethane sheet or the like is wound around the outer periphery of the tube material to reduce the interference sound with the other member. It is necessary, and the work man-hour increases further.
In addition, since a tape material, a tube material, and a soundproof material are wound around the outer periphery of the wire bundle to form a multilayer structure, there is a problem in that the wire harness is enlarged and the wiring property is lowered.

JP 2006-230043 A

  The present invention has been made in view of the above problems, and it is intended to improve a tape material having good workability for attachment to an electric wire, to enhance electric wire protection performance and to have soundproofing performance, and to prevent an enlargement of a wire harness. It is an issue.

In order to solve the above-mentioned problem, the present invention is a wire harness binding tape material that is wound around and bound to the outer periphery of a plurality of electric wire groups,
Consists of a tape body composed of two resin layers and a double-sided adhesive tape material that is adhesively fixed to one side of the tape body,
The first resin layer to which the one surface is adhered to the double-sided pressure-sensitive adhesive tape of the tape body, and the second resin layer on the other surface side of the first resin layer are harder than the second resin layer. And the first resin layer is thinner than the second resin layer,
An object of the present invention is to provide a tape material for wire harness bundling, characterized in that the second resin layer is on the outer surface side and the double-sided adhesive tape is wound on the outer peripheral surface of the wire harness with the inner surface side.

The wire harness binding tape material of the present invention is provided with an adhesive tape and has the performance as an electric wire binding material, and by forming a hard first resin layer on the tape body, interference with burrs, edges, etc. As a result, the wear resistance is improved, and the wire protection performance is also achieved.
Further, by forming a thick second resin layer having a lower hardness than the first resin layer on the outer side of the hard and thin first resin layer, the tape material surface is provided with buffering properties, and the wire harness and other members It is possible to provide a soundproofing function that reduces the impact caused by the contact with the head and reduces the interference sound.
Furthermore, since the first resin layer is formed thinner than the second resin layer, the flexibility of the wire harness itself can be maintained even when the tape material is attached to the wire harness. Thereby, the tape material of this invention can be used suitably also for the wire harness routed in a movable part.

Therefore, since it is not necessary to cover the tape material with a tube material such as a corrugated tube or a soundproof sheet, the number of steps and the number of parts can be reduced, and the workability of wire harness production can be improved.
Also, unlike tube materials, tape materials can handle wire bundles of various diameters with a single size, so there is no need to use multiple sizes separately, and work efficiency is improved in terms of inventory and production management, as well as molds. The number can be reduced and cost can be reduced.
Furthermore, since the tape material is wrapped around the outer periphery of the electric wire bundle while being in close contact with the outer periphery of the electric wire bundle, unlike the tube material, there is no gap between the outer peripheral surface of the electric wire bundle and the inner peripheral surface of the tape material. The enlargement of the outer diameter of the harness can be prevented.

While the first resin layer of the tape body is made of a resin selected from polypropylene, nylon, polyethylene, polyimide, amideimide, ester imide, epoxy, urethane,
The second resin layer is made of a resin selected from vinyl chloride, urethane foam, EPDM, and polyethylene.

The tape body in which the first resin layer and the second resin layer are integrated is provided with an uneven portion by embossing, and the double-sided adhesive tape is adhesively fixed to the bottom outer surface of the recess of the first resin layer,
The convex portion of the second resin layer is preferably wound around the outer peripheral surface of the wire harness with the outer surface side.

  By adopting the shape having the convex portion, in a place where there is a burr or an edge, first, the convex portion comes into contact with the burr or the edge to prevent contact with the electric wire, and a space is formed in the convex portion. For this reason, it is possible to further improve the shock-absorbing property and soundproofing property against interference with other members.

  The convex portion is composed of a bulging portion having a circular cross section, a bulging portion having a semicircular cross section, and a bulging portion having a polygonal cross section such as a square, and these independent convex portions may be provided vertically and horizontally with a required interval. Good. Or the said convex part is good also as a stripe-shaped or mesh-shaped bulging part. The stripe-shaped convex portions may be provided in any of a parallel direction, an orthogonal direction, and an inclined direction with respect to the longitudinal direction of the tape body.

It is preferable that the protrusion height of the protrusion is 1.1 to 2.5 mm.
The protrusion height is within the above range if it is less than 1.1 mm, it is insufficient to protect the electric wire from interference caused by burrs or edges, and if it exceeds 2.5 mm, the outer diameter of the wire harness becomes thick. , Due to the reduced routing.

A flat portion that is not embossed is provided in a portion along one edge in the width direction perpendicular to the length direction of the tape body, and the flat portion is overlapped with the tape when wound around a wire group in a spiral shape. It is preferable to use a bill.
Thus, it becomes easy to wind by overlapping and winding a flat part, and while producing | generating a clearance gap between the tape materials to wind, the protection function of an electric wire group can be improved.

  As described above, according to the tape material for binding the wire harness of the present invention, the tape body is composed of a hard first thin resin layer and a thick second resin layer having a lower hardness than the first resin layer. Since the tape material has a two-layer structure, the tape material has increased wear resistance due to the first resin layer, and the second resin layer has buffering properties on the surface of the tape material, thereby reducing interference noise with other members. be able to. Therefore, when the tape material is wound around and bundled with the electric wire group, the electric wire can be protected and sound-proofed at the same time, and all of the electric wire group's bundling function, protective function and sound-proofing function are combined. Therefore, it is not necessary to provide an exterior with a tube material such as a corrugated tube or a soundproof sheet, the man-hours for manufacturing the wire harness can be reduced, workability can be improved, member costs can be reduced, and the cost can be reduced.

Further, by forming the first resin layer thinner than the second resin layer, the flexibility of the wire harness itself can be maintained, and the tape material of the present invention is also applied to the wire harness routed to the operation site. Can be attached.
Furthermore, unlike the tube material, the tape material can be used for a bundle of electric wires of various sizes with one type of size, so that inventory, production, and die management are facilitated.
Furthermore, since the tape material of the present invention is tightly wound around the outer peripheral surface of the wire bundle, the wire harness provided with the exterior material can be prevented from being enlarged.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a tape material 10 for binding an automobile wire harness according to a first embodiment of the present invention.

  The tape material 10 includes a tape body 11 composed of two layers of a first resin layer 11A and a second resin layer 11B, and a double-sided adhesive tape 12 that is adhesively fixed to one surface of the tape body 11 on the first resin layer 11A side. Are integrated in a layered manner.

  The first resin layer 11A is harder than the second resin layer 11B and has a small thickness as shown in FIG. In the present embodiment, the first resin layer 11A is made of polypropylene, the wall thickness T1 is 0.1 mm, the second resin layer 11B is made of vinyl chloride, and the wall thickness T2 is 0.3 mm.

  As shown in FIG. 1, the tape body 11 is provided with an uneven portion 13 continuously in the length direction on one side portion in the width direction orthogonal to the length direction, and the other side portion is not provided with an uneven portion. The flat portion 16 is used. In this embodiment, the tape width is 19 mm, the uneven portion 13 is 11 mm wide, and the flat portion 16 is 8 mm wide.

  The concave-convex portion 13 is a tape base formed by laminating vinyl chloride on the surface of a polyethylene tape base material and superposing the polyethylene first resin layer 11A and the vinyl chloride second resin layer 11B. The material is embossed to form a protrusion 14 that bulges to the second resin layer 11B side. A portion recessed relative to the convex portion 14 is referred to as a concave portion 15.

The convex portion 14 is formed of a cylindrical bulged portion whose projecting end surface is a circular surface, and the convex portions 14 are densely formed at equal intervals in a staggered arrangement in the width direction. In this embodiment, the diameter D1 of the convex part 14 is 3 mm, and the protrusion height H1 is 1.5 mm.
As shown in FIG. 1, the distance between the convex portions 14 is such that the distance L1 in the tape length direction is 0.4 mm and the distance L2 in the staggered direction is 0.4 mm.

  As described above, the flat portion 16 that is not embossed is provided on one side in the width direction of the portion where the concavo-convex portion 13 is formed, and this flat portion 16 is used as an overlap margin.

  As shown in FIGS. 2A and 2B, the double-sided pressure-sensitive adhesive tape 12 is adhered to the outer surface of the tape body 11 opposite to the protruding side of the convex portion 14 in a planar shape. That is, the adhesive surface 17 is formed by laminating and fixing in layers on the outer surface of the bottom surface of the concave portion 15 and the outer surface of the flat surface 16 of the first resin layer 11A, and the adhesive surface 17 is not adhered to the inner surface of the convex portion 14. A space 18 for shock absorption is formed inside the portion 14.

  As shown in FIG. 3, the wire harness binding tape material 10 is formed by overlapping the flat portion 16 with the protruding side of the convex portion 14 as the outer surface side and the adhesive surface 17 as the inner surface side when binding the wire group W. Instead, it is wound around the outer periphery of a bundle of the wire group W in a spiral shape, and is wound by half wrapping.

  When the tape material 10 for wire harness binding having the above-described configuration is used, a plurality of electric wire groups W can be bound by the adhesive surface 17 and the required rigidity and strength are given by the first resin layer 11A made of polypropylene. And the convex part 14 functioning as a buffer part can protect the electric wires from the burr and edge interference of the vehicle and prevent wear. In addition, the second resin layer 11B made of vinyl chloride formed on the surface side of the tape body 11 and the buffering function of the space 18 formed inside the convex portion 14 reduce the interference sound caused by contact with other members. can do.

  As described above, the bundling tape material 10 of the present invention has all of the bundling function, the protection function, and the soundproofing function of the electric wire group W. Therefore, after the tape material is wound around the electric wire group and bound, a tube such as a corrugated tube is further provided. There is no need to cover the material. Therefore, the manufacturing man-hour of the wire harness W / H can be reduced, and the member cost can be reduced.

In addition, since the tape material 10 is wrapped around the wire group W to be packaged, regardless of the diameter of the wire group, it can be used for bundles of various diameters with a single size, and inventory, production, and die management Becomes easy. Furthermore, since the tape material 10 is tightly wound around the outer peripheral surface of the electric wire group W with the adhesive surface 17 and the projecting height H1 of the convex portion 14 is 2.5 mm or less, it is in a state where the exterior material is attached. The enlargement of the wire harness W / H can be suppressed.
Furthermore, since the hard first resin layer 11A is formed thinner than the second resin layer B, it is possible to maintain the flexibility of the wire harness W / H with the exterior material attached.

FIG. 4 shows a second embodiment of the present invention.
The tape body 11 in the second embodiment has a two-layer structure of a flat first resin layer 11A and a second resin layer 11B on which the concavo-convex portion 13 is formed.

  That is, first, a tape base material made of vinyl chloride is embossed to form a concavo-convex portion 13 in which a plurality of convex portions 14 bulges on the base material, and then relative to the convex portion 14. A tape base material made of polypropylene is laminated and adhered to the outer surface of the bottom surface of the concave portion 15 and the outer surface side of the flat portion 16. The double-sided pressure-sensitive adhesive tape 12 is adhesively fixed in layers on the entire other surface side of the first resin layer 11A made of polypropylene formed by this laminating adhesion.

  In the present embodiment, the tape body 11 has the uneven portion 13 formed only in the second resin layer 11B, and the hard first resin layer 11A is flat, so that the wire harness is bent with the tape material 10 attached. Sex can be maintained. Moreover, the convex part 14 is formed only by the 2nd resin layer 11B, the rigidity of this convex part 14 can reduce, and the buffer function when it contacts with a burr | flash or an edge can be improved.

It is a top view of the tape material for wire harness binding which concerns on 1st embodiment of this invention. (A) is the sectional view on the AA line of FIG. 1, (B) is the sectional view on the BB line of FIG. It is a perspective view which shows the winding operation | work to the electric wire bundle of the tape material shown in FIG. It is sectional drawing which shows 2nd embodiment of this invention. It is a figure of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Tape material 11 Tape main body 11A 1st resin layer 11B 2nd resin layer 12 Double-sided adhesive tape 13 Concavity and convexity part 14 Convex part 15 Concave part 17 Adhesive surface W Electric wire group W / H Wire harness

Claims (3)

A wire harness binding tape material wound around the outer periphery of a plurality of electric wire groups,
Consists of a tape body composed of two resin layers and a double-sided adhesive tape material that is adhesively fixed to one side of the tape body,
The first resin layer to which the one surface is adhered to the double-sided pressure-sensitive adhesive tape of the tape body, and the second resin layer on the other surface side of the first resin layer are harder than the second resin layer. And the first resin layer is thinner than the second resin layer,
A wire harness binding tape material, wherein the second resin layer is on the outer surface side and the double-sided adhesive tape is wound on the outer peripheral surface of the wire harness with the inner surface side. While the first resin layer of the tape body is made of a resin selected from polypropylene, nylon, polyethylene, polyimide, amideimide, ester imide, epoxy, urethane,
The wire material binding tape material according to claim 1, wherein the second resin layer is made of a resin selected from vinyl chloride, urethane foam, EPDM, and polyethylene. The tape body in which the first resin layer and the second resin layer are integrated is provided with an uneven portion by embossing, and the double-sided adhesive tape is adhesively fixed to the bottom outer surface of the recess of the first resin layer,
The tape material for wire harness binding according to claim 1 or 2, wherein the convex portion of the second resin layer is wound around the outer peripheral surface of the wire harness with the outer surface side.

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