JPH0973822A - Wire harness binding tape and wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To halve a tape winding work process and increase both of a heat radiation effect and a heat insulation effects by binding a wire harness with a tape having projections for forming an air layer in a gap between the projections and eliminating a soft tape as a cushion. SOLUTION: Columunar projections 3 having the prescribed height are engraved at intervals on one side 2 of a vinyl chloride tape 1 having small thickness and smooth surface, and wound around the external surface of a wire group W, so as to keep the projections 3 in contact with the external surface. The wire group W is thereby bound, and a wire harness W/H is formed. In this case, a gap is generated between the projections 3 and the wire group W to form an air layer. This air layer acts to insulate heat, and absorbs and reduce an interference sound occurring at the time of contact with a body. Also, the function of a cushion against contact with the body is provided to protect the wire harness W/H, and soft sheet as a cushion can be eliminated, thereby halving a sheet winding process. In addition, the projections 3 can prevent occurrence of a slip during a tape winding work, and the work can be easily implemented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding tape wound around the outer periphery of a large number of electric wire groups constituting an automobile wire harness, and a wire harness wound with the tape.

[0002]

2. Description of the Related Art Conventionally, a wire harness binding tape of this type is made of a resin tape such as vinyl chloride and may be coated with an adhesive on one side. Has become.

As shown in FIG. 5, the above-mentioned tape is usually wrapped around the outer peripheral surface of a large number of electric wires W by wrapping to bundle a group of electric wires. The wire harness W / H formed by winding the tape T is routed along the body surface of the vehicle through a clip or the like, but may be in contact with the body surface due to vibration while the vehicle is running. Further, a soft sheet S made of a urethane foam sheet or the like is wound around the place or the like in a sushi winding state. The soft sheet S is fixed by applying an adhesive to the winding end or by fastening with a band or the like.

By winding the soft sheet S, it is possible to protect the wire harness by buffering it when it comes into contact with the body surface and to reduce the interference noise.

[0005]

However, when the soft sheet S is further wound around the outer periphery of the tape T as described above, there are drawbacks that it takes a lot of work and the number of parts increases. Further, if there is a bent portion in the section where the soft sheet S is wound, there are drawbacks such that the soft sheet is difficult to wind and the soft sheet has wrinkles.

The present invention is intended to solve the above-mentioned problems, and does not require double winding of a tape and a soft sheet, and provides the same function as when the soft sheet is wound only by winding the tape. Has an aim.

[0007]

In order to achieve the above object, the present invention provides a wire harness binding tape as claimed in claim 1, which is used by being wound around the outer circumference of a large number of electric wire groups.
Provided is a tape for binding a wire harness, characterized in that a large number of projections are provided on at least one surface of a tape base material with a gap therebetween.

The protrusion is a columnar protrusion protruding from one side or both sides of the thin tape base material. Alternatively, it may be a projection formed by denting one surface of the substrate and projecting it on the opposite surface.

An adhesive is applied to the tip end surface of the projection and / or the surface of the base material on the opposite side to the projection side where no projection is provided. (Claim 2)

According to a third aspect of the present invention, the tape according to the first or second aspect is wound around the outer circumference of the wire group, and the projection of the tape is located on the inner circumference side and / or the outer circumference side. We provide wire harnesses.

When the tape having the above-mentioned projection is wound around the outer circumference of the wire group, and the projection side is the inner circumference side in contact with the wire group, an air layer can be formed around the wire group. Therefore, it is possible to obtain a heat insulating effect, and at the same time, it is possible to absorb and reduce the interference sound generated when the air layer comes into contact with the body or the like. On the other hand, even when the protrusion side is the outer peripheral side, the surface area of the tape that contacts the outside is large, so the heat dissipation effect is enhanced, and the surface with unevenness makes contact when it interferes with the vehicle body, so the interference noise Can be reduced. Therefore, when the protrusions are provided on both sides and the protrusions are located on the inner peripheral side and the outer peripheral side of the wire group, the heat dissipation effect and the interference sound reducing effect can be synergistically generated. Further, in any case, by having the protrusion, the impact at the time of interference can be reduced and the wire group can be protected.

Further, it is only necessary to wind the tape around the electric wire group, and the winding of the soft sheet which has been conventionally required can be eliminated, so that the number of working steps can be reduced by half.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 (A), (B) and (C) show the wire harness binding tape of the first embodiment. Tape 1
Is made of vinyl chloride, and has one side 2a of a strip-shaped tape base material 2 having a thin surface and smooth surfaces on both sides, that is, in the case of the tape roll shape shown in FIG. The protrusion 3 is provided with a gap. The shape of the protrusion 3 is not limited to the cylindrical shape, and may be a hemispherical shape or a prismatic shape. Further, although it may be an elongated rod-shaped projection, it is necessary that the projection has a height such that it does not collapse into a substantially flat shape when wound.

Further, as shown in FIG. 1B, an adhesive 4 is applied to the tip surface 3a of the protrusion 3.

As shown in FIG. 2, the tape 1 according to the first embodiment is formed by winding the projection 3 so as to come into contact with the outer peripheral surface of the wire group consisting of a large number of wires W to bind the wire group.

In the wire harness W / H bound by the tape 1, since the protrusion 3 is located on the inner peripheral side in contact with the electric wire side, the tip surface 3a of the protrusion 3 comes into contact with the electric wire W and the adhesive 4
And the gaps are formed between the protrusions 3. This gap serves as an air layer, and has a heat insulating function of blocking radiant heat generated from the outside of the electric wire. Also, the wire harness W
The interference sound generated when / H comes into contact with the body can be absorbed by the air layer to reduce the interference sound, and is also buffered by the contact action.

FIGS. 3A and 3B show a modification of the first embodiment. As shown in FIG. 3A, the adhesive 4 is attached to the other surface 2b of the tape base 2 on which the protrusion 3 is not provided. Applying.
As shown in (B), the tape 1 is wound by contacting the outer peripheral surface of the electric wire group with the protrusion 3 on the outer peripheral side and the side coated with the adhesive 4 on the inner peripheral side.

When the projections 3 are located on the outer peripheral side as described above, the surface area of the tape 1 in contact with the atmosphere can be increased and the heat radiation effect can be enhanced. Further, since the protrusion 3 is located outside, the protrusion 3 acts as a buffer when contacting the body to protect the wire harness and reduce interference noise.

FIGS. 4A, 4B and 4C show the tapes of the second, third and fourth embodiments, respectively. In the tape 1 of the second embodiment of FIG. 4A, the protrusions 3 are formed on both surfaces 2a and 2b of the tape base material 2. In the tape 1, the pressure-sensitive adhesive 4 is applied to the tip surfaces of the protrusions 2 on both the front and back sides.

The tape 1 of the third embodiment shown in FIG.
The projection 3'is formed by providing the tape base material 2 with unevenness.
That is, the other surface 2b of the base material 2 is recessed so as to protrude toward the one surface 2a. The tape 1 of the fourth embodiment of FIG. 4 (C)
Form the projections 3 ′ on both surfaces of the tape base material 2.

Even when the electric wire group is bound by using the tape 1 of the second, third and fourth embodiments, the same operation as that of the first embodiment is obtained.

The tape 1 having the protrusions 3 and 3 '
May be wrapped around the outer peripheral surface of the electric wire group after the electric wire group is bound with a normal tape having no protrusion.

[0023]

As is apparent from the above description, when a wire harness is formed by binding a group of electric wires using the tape according to the present invention, a protrusion is provided on the tape itself.
It is possible to produce the same action as a conventional soft sheet made of urethane foam or the like. That is, the space between the protrusions serves as an air layer, and heat dissipation or heat insulation is achieved.
In addition, the presence of the air layer has the effect of reducing the interference sound, and at the time of contact with the body, the contact pressure can be buffered to protect the wire harness.

Also, since the projections are provided, slippage is unlikely to occur during the tape winding operation, and the tape winding operation can be facilitated. Moreover, conventionally, two steps of tape winding and soft sheet winding were required, but only one step of tape winding can be performed, the working process can be halved, and the soft sheet is not required, and the number of parts is reduced. The cost can be reduced.

[Brief description of drawings]

1A and 1B show a tape of a first embodiment, FIG. 1A is a perspective view, FIG. 1B is a sectional view, and FIG. 1C is a perspective view showing a state in which the tape is wound into a roll.

FIG. 2 is a cross-sectional view showing a state in which the tape is wound around a wire group.

FIG. 3A is a sectional view showing a modification of the first embodiment, and FIG. 3B is a sectional view showing a state in which the electric wire group is wound.

4A, 4B, and 4C are cross-sectional views showing the second, third, and fourth embodiments, respectively.

FIG. 5 is a perspective view showing a conventional example.

[Explanation of symbols]

 1 tape 2 tape base material 3 protrusion W electric wire W / H wire harness

Claims (3)

[Claims] 1. A wire harness binding tape which is used by being wound around the outer periphery of a large number of electric wire groups, wherein a large number of projections are provided on at least one surface of a tape base material with a gap therebetween. Tape for binding wire harness. 2. The wire harness binding tape according to claim 1, wherein an adhesive is applied to a tip end surface of the projection and / or a base material surface opposite to the projection side where the projection is not provided. 3. A wire harness in which the tape according to claim 1 or 2 is wound around the outer circumference of an electric wire group, and the projection of the tape is located on the inner circumference side and / or the outer circumference side.