JP2010074927A - Harness protection material and its fitting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that it costs much in components and work for protecting a wire harness from a contact with a vehicle body by putting a corrugated tube on the wire harness and winding a vinyl tape so that an end part of the corrugated tube covers an electric wire. <P>SOLUTION: A harness protection material 5 having a flexible protection member 2 on an adhesion layer side of a flexible fixing sheet 1 having an adhesion layer on one face is wound to a prescribed position of the wire harness 4. Thus, the wire harness is protected from damage and the electric wires are bundled and fixed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a protective material for a wire harness used for electrical wiring of an automobile or the like.

Wire harnesses used for electrical wiring of automobiles and the like bundle many electric wires, branch them at predetermined locations as necessary, and perform electric wiring to various electrical components by connecting connectors to the electric wires. . A wire harness is often wound with an adhesive tape such as a vinyl tape in order to bundle a large number of electric wires.
In addition, a protective material such as a corrugated tube is put on a predetermined position so that the coating of the electric wire does not come into contact with the edge portion of the automobile panel or the protruding portion of other parts, and is wound with adhesive tape from the outside. (For example, Patent Document 1).

JP 2007-288972 A

  The corrugated tube is generally formed by molding a resin such as PP (polypropylene) into a bellows tube and slits in the longitudinal direction. The corrugated tube can withstand sharp panel edges and the like and has a certain degree of flexibility. The vinyl tape has an adhesive layer on one side of a flexible tape such as PVC (polyvinyl chloride).

The above-described protective material is widely used for protecting wire harnesses, but has the following problems.
First, a two-stage operation is required, in which the corrugated tube is placed on the wire harness, and then the vinyl tape is wound around the wire from the end of the corrugated tube. Also, since it is difficult to change the specifications of the corrugated tube finely according to the diameter of the wire harness, one that is considerably larger than the diameter of the wire harness is used, and the wire harness becomes thicker than necessary at the protective material mounting part, It may affect the installation on the vehicle.

In particular, the attachment of the protective material to the branch portion uses a corrugated tube processed according to the branch portion, covers the branch portion according to the corrugated tube, and further winds the tape on the branch side.
In addition, a protective material that is lighter than a corrugated tube is required in order to reduce the weight of automobile electrical components.

In order to solve the above problems, the present invention has the following configuration.
Invention of Claim 1 is a harness protective material which protects a wire harness, Comprising: The fixing sheet which has an adhesion layer on one side, and can be wound around the outer peripheral surface of the said wire harness, The adhesion layer side of the said fixing sheet It is a harness protective material provided with the flexible protective member which is arrange | positioned and covers a part of said fixed sheet | seat.
With this configuration, the protective member covers the predetermined position and the electric wires can be bundled and fixed at the same time only by winding the harness protective material of the present invention around the predetermined position where the harness should be protected from damage.

The invention according to claim 2 is characterized in that the protective member disposed on the fixed sheet has a smaller area than the fixed sheet, and the protective member is fixed to the fixed sheet. It is a harness protection material.
With this configuration, the adhesive layer of the fixing sheet is exposed at the periphery of the protective member, and the peripheral portion where the adhesive layer is exposed directly contacts the harness, so the sheet is wound around the wire from the end of the protective member. It becomes possible, and the protective member can be fixed to the harness by one winding operation.

According to a third aspect of the present invention, the harness protective material according to the first or second aspect is applied to a portion to be protected of the wire harness, the fixing sheet around the protective member is pressed against the outer peripheral surface of the wire harness, and the fixing sheet It is the attachment method of the harness protective material characterized by winding the winding part of the peripheral part of this.
With this attachment method, the protective member that protects the harness can be fixed by a single winding operation.

  The fixed sheet is one in which an adhesive layer is formed on one side of a sheet such as PVC that is thin and flexible, like a commonly used vinyl tape, so that the fixed sheet can be wound around the outer peripheral surface of the wire harness. desirable. Thereby, since it adapts well to the uneven surface of the wire harness in which the electric wires are bundled, the electric wires or between the electric wires and the protective member can be strongly fixed.

The protective member is a sheet having a thickness of about 1 mm, such as flexible PVC. Thereby, even if the edge part of the panel of a motor vehicle, the protrusion part of other components, etc. contact a wire harness, it can prevent that a protrusion part etc. damage a wire harness. As a result, the insulation coating of the internal electric wire is broken and electrically connected to the protruding portion, or the electric wire is not broken, and the wire harness is protected.
Further, when the protective member has a thickness of about 1 mm, the protective member is not as flexible as the fixed sheet, but can be sufficiently flexible and can be wound along the surface of the harness.

Moreover, you may form an adhesion layer also in a protection member. In particular, when the shape of the protective member is complicated or the ratio of the area of the protective member to the area of the fixed sheet is large, if the adhesive layer is also formed on the protective member, the winding work around the harness It becomes easier and durability is also improved.
Various materials such as PVC, polyolefin, polyester, and the like can be used as the material for the fixing sheet and the protective member. In addition, a material obtained by foaming these resins and having cushioning properties can also be used. Moreover, what strengthened combining a fixed sheet | seat or a protection member with fiber etc. can also be utilized.

As the pressure-sensitive adhesive layer provided on the fixing sheet or the protective member, various materials such as a rubber-based adhesive, an acrylic adhesive, and a silicon-based adhesive can be used, and are provided by applying them.
In addition, the shape of the fixing sheet and the protective member depends on the shape of the wire harness part to be protected, the shape of the edge part of the automobile panel that may be damaged by contact with the wire harness, and the protruding part of other parts. It can be changed as appropriate.

The harness protection material of the present invention can protect a harness from damage due to contact with an edge portion of an automobile panel, a protruding portion of another component, or the like. Moreover, it is possible to simultaneously cover the harness with the protective member and fix the protective member to the harness by one winding.
In addition, since the protective member adheres without floating from the harness surface, the diameter of the harness is not increased more than necessary at the protective portion, and a single type of protective material can accommodate harnesses having different diameters.

Moreover, since the winding around the harness is performed in a state where the protective member is fixed to the fixed sheet, there is no need to separately suppress the protective member and the fixed sheet, and the workability is excellent.
Furthermore, there is an effect that the wires of the harness are bundled and the wires are fixed to each other, and the work of fixing the wires in advance with an adhesive tape becomes unnecessary.
Further, when a protective member having cushioning properties is used, it is possible to prevent the generation of abnormal noise from the contact portion between the wire harness and the vehicle body when the automobile vibrates.

In FIG. 1, one form of the harness protective material 5 of this invention is shown. FIG. 2 shows a partially enlarged view of the harness protective material of FIG. 1 taken along the line AA. The fixed sheet 1 is made of soft PVC having a thickness of 0.2 mm as a base material, and a rubber-based adhesive material is applied to form the adhesive layer 3, which is cut into a rectangle. In addition, the adhesion layer 3 is formed in the surface side of the fixing sheet 1 of FIG. The protective member 2 is a soft PVC sheet having a thickness of 1.0 mm, which is placed so as to cover a part of the side on which the adhesive layer 3 is formed, and is adhered and fixed to the fixing sheet 1.
The size of the fixed sheet 1 is 100 mm × 200 mm, and the size of the protection member 2 is 60 mm × 80 mm.
The protection member 2 is disposed on the fixed sheet 1 so as to be surrounded by the peripheral portion 11 (up and down and left and right of the protection member 2 in FIG. 1). In FIG. 1, a winding portion 14 extends on the right side of the protection member 2.

FIG. 3 shows a place where the harness protection material 5 of FIG. 1 is wound around the wire harness 4. A harness protective material 5 is applied so that the protective member 2 covers a portion to be protected of the wire harness 4 (a portion where the edge of the panel or the like hits), and the peripheral portion 11 of the fixing sheet 1 is brought into close contact with the wire harness 4. Pasting while pressing (while slightly pulling in the direction of arrow 6a in FIG. 3).
Further, by winding the wound portion 14 (right side in FIG. 1) around the wire harness 4 while slightly pulling in the direction of the arrow 6b in FIG. 3, the wire bundle is fixed and the protective member 2 is attached to the wire harness. 4 can be fixed at a predetermined position. The arrows 6a and 6b in FIG. 3 indicate the winding direction and the order thereof.
In addition, the electric wire which comprises a wire harness may be partly bundled with vinyl tape etc. previously, or the whole electric wire bundled may be wound with vinyl tape etc.

In FIG. 4, another form of the harness protective material 5 of the present invention is shown. The difference from the embodiment of FIG. 1 is that the fixed sheet 1 has a substantially H-shape and the four arms 12 and 13 extend. The shape of the harness protection member 5 in FIG. 4 is a desirable shape when there is a portion to be protected outside the branch portion 7 of the wire harness 4.
The material of the fixing member, the protective member, the adhesive layer, and the like are the same as in the first embodiment.
Further, the size of the fixing sheet is 100 mm × 200 mm except for the cut portion as in the embodiment of FIG. 1, and the size of the protective member is 20 mm × 40 mm.

In FIG. 5, the place which winds the harness protective material 5 of FIG. In this case, the portion that should protect the wire harness 4 is outside the branch portion of the wire harness 4. The protective member 2 is applied to the portion of the wire harness 4 to be protected, and the short arm 12 and the upper, lower, left and right peripheral portions are pressed against the wire harness 4 (while slightly pulling in the direction of the arrow 6a in FIG. 5). )paste.
Next, by winding the longer arm 13 around the wire harness 4 while pulling it slightly in the direction of the arrow 6b in FIG. 5, the wire bundle is fixed at the branch portion of the wire harness 4 and easily protected. The member 2 can be fixed at a predetermined position of the wire harness 4.

In FIG. 6, another form of the harness protection material 5 of this invention is shown.
The difference from the embodiment of FIG. 4 is that the protective member 2 has a substantially inverted U shape. The method of winding the harness protective material 5 around the wire harness 4 can be performed in the same manner as in the example of FIG.
Thus, the protection member 2 can be made into an arbitrary shape corresponding to the position and shape of the portion of the wire harness 4 to be protected.

Further, the position of the protection member 2 on the fixing sheet 1 can be freely selected as long as the protection member 2 is fixed by the adhesive layer 3 of the fixing sheet 1. Since the protection member 2 is fixed to the fixing sheet 1, the protection member 2 can be fixed to the wire harness 4 by a single winding operation.
In FIG. 7, another embodiment of the harness protective material of this invention is shown. The peripheral portion 11 does not surround the entire circumference of the protective member 2, and one side of the protective member 2 protrudes from the fixed sheet 1. The position of the protective member 2 on the fixed sheet 1 can be selected depending on the position of the portion to be protected of the wire harness 4 and the ease of access by the operator to the wire harness 4.
As shown in FIG. 7, the protective member 2 partially protrudes from the fixed sheet 1, but is fixed to the fixed sheet 1 by the adhesive layer 3, and the protective member 2 and the fixed sheet 1 are separately held and wound. It is the same as the embodiment shown in FIGS. 1, 4 and 6 that the work for attaching is not required and the workability is excellent.

In each of the above embodiments, the adhesive layer 3 is formed only on the fixed sheet 1. However, the adhesive layer 3 may be formed on the wire harness 4 side of the protective member 2. FIG. 8 shows a partially enlarged view of a cross section of a portion where both the fixing sheet 1 and the protection member 2 exist in this case.
By forming the adhesive layer 3 on the wire harness 4 side of the protective member 2, when the protective member 2 has a complicated shape as shown in FIG. 6, the contact position of the protective member 2 on the wire harness can be determined more accurately. There are advantages such as. In particular, when the ratio of the area of the protective member 2 to the fixed sheet 1 is high, winding workability and durability are improved.

It is one form of the harness protective material of the present invention. It is the elements on larger scale of the AA cross section of the harness protective material of FIG. It is the figure showing the place which winds the harness protective material of FIG. 1 around a wire harness. It is another form of the harness protective material of this invention. It is a figure showing the place which winds the harness protective material of FIG. 4 around a wire harness. It is another form of the harness protective material of this invention. It is another form of the harness protective material of this invention. It is a partial cross section figure in the case of providing an adhesion layer in the wire harness side of a protection member.

Explanation of symbols

1 .. Fixing sheet, 2 .. Protective member, 3 .. Adhesive layer, 4 .. Wire harness, 5 .. Harness protective material, 6a, 6b .. Arrow indicating the winding direction of harness protective material, 7. Branch part of the wire harness, 11 .... peripheral part, 12 .... shorter arm, 13 .... longer arm part, 14 .... wrapping part

Claims (3)

A harness protective material for protecting a wire harness,
A fixing sheet having an adhesive layer on one side and capable of being wound around the outer peripheral surface of the wire harness;
A flexible protective member that is disposed on the adhesive layer side of the fixed sheet and covers a part of the fixed sheet is provided.
Harness protective material. The protective member arranged on the fixed sheet has a smaller area than the fixed sheet,
The protective member is fixed to the fixing sheet,
The harness protective material according to claim 1. In the part to be protected of the wire harness,
Applying the harness protective material according to claim 1 or 2,
Press the fixing sheet around the protective member against the outer peripheral surface of the wire harness,
It is characterized by winding the winding part around the fixed sheet,
How to install harness protection material.

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