JPH08163742A - Sheet for wrapping branch part of wiring harness - Google Patents

Abstract

PURPOSE: To provide a sheet for wrapping the branching part of a wiring harness which facilitates the work of forming the branching part of the wiring harness and prevents the wires from jutting out from the branching part effectively. CONSTITUTION: A sheet 10 for wrapping the branching part of a wiring harness has a sheet base part which is provided on the one side surface side of the branching part 2 of the wiring harness 1. The sheet base has a plurality of wrapping tabs 12 which are extended from the base and folded over the branching part between the respective wire bundles which are extended from the branching part so as to be wound into the opposite sides and fixed by tapes. The sheet 10 for wrapping the branching part of a wiring harness is made of thermoplastic elastomer and is formed into a sheet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet for binding a branch portion of a wire harness used for a branch portion of the wire harness.

[0002]

2. Description of the Related Art Conventionally, when a branch portion is formed in manufacturing a wire harness, a taping method by winding a tape has been generally used.

For example, as shown in FIG. 11, when a so-called three-pronged branch portion 2 in which the branch portion 1b of the wire harness 1 is branched from the trunk portion 1a is constructed, as shown in FIG. 12 and FIG. The tape 3 is started to be wound from one side of the portion 1a, wound plural times at the branching portion 2 position in a cross shape, and then wound plural times at a position near the branching portion 2 on the branch line portion 1b side, and then the trunk line on the other side. The branch portion 2 was formed by winding the portion 1a around the branch portion 2.

The bundles of the electric wires 4 in the portions other than the branch portion 2 are bundled by three tapes.

[0005]

However, according to the method of forming the branching portion 2 by the taping process using only the tape 3 as described above, the taping process is complicated,
There is a drawback that the work of forming the branching part 2 is troublesome and time-consuming.

Further, as shown in FIG. 14, there is a possibility that the electric wire 4 may protrude from a gap formed between the tapes 3 wound at the position of the branching portion 2, and when the wire harness 1 is assembled to an automobile or the like, the protrusion occurs. There is also a possibility that the electric wire 4 may be caught between members of the automobile to cause disconnection.

In view of the above problems, the present invention provides a sheet for binding a branch portion of a wire harness, which facilitates the work of forming the branch portion of the wire harness and effectively prevents the wires from protruding at the branch portion. The purpose is to provide.

[0008]

A technical means for achieving the above object is to arrange a plurality of electric wires on a branch portion when the wire harness having the branch portion is manufactured by winding a tape around the electric wire. A branch portion binding sheet for a wire harness, wherein the branch portion binding sheet is a sheet base portion arranged on one side surface side of the branch portion, and a branch portion position extending from the sheet base portion. It is provided with a plurality of binding piece portions which are folded back to the other side surface side between the electric wire bundles arranged in a more extended shape and fixed in a wound shape by the tape.

In addition, a jig insertion hole into which a holding rod of a jig for holding each electric wire is removably inserted may be formed in each of the binding pieces.

Further, a tape fixing tongue piece may be provided at the extending end of each of the binding piece portions.

The branch binding sheet may be made of a thermoplastic elastomer.

[0012]

According to the present invention, the sheet base portion of the branch binding sheet is located on one side of the position corresponding to the branch portion of the wire harness, and the binding pieces are arranged so as to extend from the branch position. Each wire bundle is folded back to the other side, and each folded bundle part is fixed by winding tape around each wire bundle to bind each wire bundle. It is possible to manufacture a wire harness that the user has.

That is, at the branching portion, each binding piece portion of the branching portion binding sheet may be folded back, and each binding piece portion may be fixed in a winding shape with a tape for winding each electric wire bundle. This eliminates the need for a taping process by one person and facilitates the work of forming the branch portion of the wire harness.

Further, this is a system in which the binding piece portions of the branch portion binding sheet are folded back and fixed to the other side surface side between the electric wire bundles, and it is possible to effectively prevent the generation of a gap in the branch portion. It is possible to effectively prevent the electric wire from protruding.

Furthermore, if a jig insertion hole is formed in each of the binding pieces, through which the holding rod of the jig for holding each electric wire can be inserted and removed, the jig insertion hole is formed along the jig. When arranging each electric wire, the branch binding sheet is held in advance in the jig holding rod by using each jig insertion hole of each binding piece, and each electric wire is held in that state. By arranging,
The work of forming the branch portion can be facilitated.

Further, if a tape fixing tongue piece is provided at each extended end of each binding piece, the tape can be more easily wound and fixed.

Furthermore, if the branching portion binding sheet is made of a thermoplastic elastomer, the branching portion can be formed in a more closely contact state due to its elastic deformation action, and the protrusion of the electric wire can be prevented more effectively.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 to FIG. 3, 10 is a branching portion binding sheet for binding the branching portion 2 of the wire harness 1, which is elastic. Made of a material, for example, a thermoplastic elastomer, in a sheet shape, and has a so-called three-pronged shape, which includes a central sheet base portion 11 and a plurality of wide binding piece portions 12 radially extending from the sheet base portion 11. Has been done.

When the branch portion binding sheet 10 is used, as shown in FIG. 1, the branch portion is located on one side surface of the wire harness 1 at a position corresponding to the branch portion 2 that branches into a three-pronged shape, that is, on the lower surface side. The sheet base 11 of the binding sheet 10 is positioned.

Next, each of the binding piece portions 12 is folded back to the other side surface, that is, the upper surface side from each of the four bundles of electric wires arranged to extend from the position of the branch portion 2, and the folded binding piece portions are folded. As shown in FIG. 3, the wire harness 1 having the branching portion 2 can be manufactured by fixing the ends of the winding wires 12 in a winding manner with the tape 3 that winds around each bundle of electric wires to bundle the bundle of electric wires as shown in FIG.

As described above, when the branch portion 2 of the wire harness 1 is formed, the sheet base 11 of the branch portion binding sheet 10 is applied to one side surface side corresponding to the branch portion 2,
Each binding piece 12 is folded back to the other side surface side, and each binding piece 12
Need only be fixed in a wound shape with the tape 3 that is wound around each bundle of electric wires 4, and there is no need for a taping process due to a complicated winding method as in the past, and the work of forming the branching portion 2 of the wire harness 1 can be easily performed.

Further, the wide binding pieces 12 of the branch binding sheet 10 are folded back from between the four bundles of electric wires to the other side surface side and fixed, and a gap is effectively prevented from occurring in the branch portion 2. Therefore, it is possible to effectively prevent the electric wire 4 from protruding at the branch portion 2.

Furthermore, since the branch portion bundling sheet 10 is made of a thermoplastic elastomer, the branch portion 2 can be formed more closely to the bundle of electric wires 4 due to its elastic deformation action. The protrusion of No. 4 can be more effectively prevented.

FIG. 4 and FIG. 5 show a second embodiment, in which each of the binding piece portions 12 of the branching portion binding sheet 10 is extended in four directions, and has a branching shape in all four directions. It is used when forming the branched portion 2 to be formed. Others are the same as in the first embodiment.

FIGS. 6 to 8 show a third embodiment, in which the holding rod portion 15 of the jig 14 can be freely inserted into and removed from each binding piece portion 12 of the branch portion binding sheet 10 formed in a three-pronged shape. The jig insertion holes 16 that are inserted into the respective holes are formed in an elongated shape. Further, each of the binding piece portions 12 is provided with a narrow tape fixing tongue piece portion 17 at the extending end thereof. Others are the same as in the first embodiment.

According to the present embodiment, as shown in FIG. 7, each holding rod portion 15 of the jig 14 provided upright at an appropriate position along the wiring diagram of the wire harness assembly drawing board.
Is set in advance by using each jig insertion hole 16 of the branch portion binding sheet 10 and each electric wire 4 is set in that state.
It is only necessary to sequentially wire the above, and after the wiring, each binding piece part 12 is folded back so as to be separated from each holding rod part 15, so that the work of forming the branch part 2 can be further facilitated.

Further, as shown in FIG. 8, each of the folded binding piece portions 12 may be fixed by winding the tape fixing tongue piece portion 17 with the tape 3 around which each bundle of electric wires 4 is wound. At this time, since the tape fixing tongue portion 17 has a narrow width, the work of winding and fixing the tape 3 can be performed more easily.

FIGS. 9 and 10 show a fourth embodiment, in which each of the binding piece portions 12 of the branch portion binding sheet 10 has a structure in which it extends in four directions. It is used when forming the branched portion 2 to be formed. Others are the same as in the third embodiment.

In each of the above embodiments, the branching portion binding sheet 10 has a three-pronged shape or a four-pronged shape, but it depends on the number of each electric wire 4 bundled in the branching portion 2. Branch portion bundling sheet 10 having a number of binding piece portions 12
May be used, and the number of the binding piece portions 12 is not limited to the number of the embodiments.

[0030]

As described above, according to the branch portion binding sheet for a wire harness of the present invention, the seat base portion disposed on one side of the branch portion and the sheet base portion extending from the seat base portion are provided. , A plurality of binding piece portions that are folded back to the other side surface side between the electric wire bundles arranged to extend from the branch portion position and are fixed in a wound shape by a tape, and the branch portion includes It suffices to fold each binding piece of the branch binding sheet and fix each binding piece in a winding shape with a tape that wraps each wire bundle. There is an advantage that the work of forming the branch portion of the harness can be easily performed, the occurrence of a gap in the branch portion can be effectively prevented, and the protrusion of the electric wire at the branch portion can be effectively prevented. .

Further, if a jig insertion hole is formed in each of the binding piece portions so that the holding rod portion of the jig for holding each electric wire can be inserted and removed, the jig insertion hole is formed along the jig. When arranging each electric wire, in advance, using each jig insertion hole of each binding piece part, hold the branch part bundling sheet in the holding rod part of the jig in an insertion state, By arranging it, there is an advantage that the work of forming the branch portion can be facilitated.

Further, if a tape fixing tongue piece is provided at each extended end of each binding piece, there is an advantage that the tape can be more easily wound and fixed.

Further, if the branch portion bundling sheet is made of a thermoplastic elastomer, the branch portion can be formed more closely due to its elastic deformation action, and the protrusion of the electric wire can be more effectively prevented. is there.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a first embodiment of the present invention.

FIG. 2 is a plan view showing a first embodiment of the present invention.

FIG. 3 is an explanatory diagram of the first embodiment of the present invention.

FIG. 4 is a plan view showing a second embodiment of the present invention.

FIG. 5 is an explanatory diagram of the second embodiment of the present invention.

FIG. 6 is a plan view showing a third embodiment of the present invention.

FIG. 7 is an explanatory diagram of the third embodiment of the present invention.

FIG. 8 is an explanatory diagram of the third embodiment of the present invention.

FIG. 9 is a plan view showing a fourth embodiment of the present invention.

FIG. 10 is an explanatory diagram of the fourth embodiment of the present invention.

FIG. 11 is an explanatory diagram showing a branch portion of an electric wire.

FIG. 12 is an explanatory diagram showing how to wind the tape.

FIG. 13 is an explanatory diagram showing how to wind the tape.

FIG. 14 is an explanatory diagram of a protruding state of an electric wire.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 wire harness 2 branch part 3 tape 4 electric wire 10 branch part binding sheet 11 sheet base 12 binding piece part 14 jig 15 holding rod part 16 jig insertion hole 17 tape fixing tongue part

Claims (4)

[Claims] 1. A branch part binding sheet for a wire harness disposed in a branch part when a wire harness having a branch part is manufactured by winding a plurality of electric wires on a tape, the branch part bundling The sheet for use is a sheet base portion arranged on one side surface side of the branch portion, and is formed to extend from the sheet base portion, and to the other side surface side between the electric wire bundles arranged to extend from the branch portion position. A plurality of binding piece portions that are folded back into the wire and fixed in a wound shape by the tape, and a branching portion binding sheet of a wire harness. 2. A jig insertion hole through which a holding rod of a jig for holding each electric wire is removably inserted is formed in each of the binding piece portions. A sheet for binding the branch part of the wire harness. 3. The sheet for binding a branch portion of a wire harness according to claim 2, wherein a tape fixing tongue piece portion is provided at each extended end of each binding piece portion. 4. The branching part binding sheet for a wire harness according to claim 1, 2 or 3, wherein the branching part binding sheet is made of a thermoplastic elastomer.