JPH09180774A - Mounting structure for protection cap of wire harness splice - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure for the protection cap of a wire harness splice, ensuring inexpensiveness and allowing easy fixing to a jig. SOLUTION: A protection cap 6A is used to house and protect the spice 2 where conductors exposed from ends of a plurality of cables 1 of a wire harness W/H are connected to each other, and has a flexible resin tube 7 of the prescribed length. Also, one end part 7a of the tube 7 is capped to the splice 2, so as to cover the sheathed part of the wires 1. Furthermore, the other end part 7b of the tube 7 is bent from a position near the end of the splice 2 for taping and fixing a portion 7d longer than the sheathed end 7c of the part 7a and the sheathed part of the wires 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap mounting structure for accommodating and protecting terminal concentrated splice portions of a wire harness, and more particularly to an inexpensive resin tube used as a protective cap.

[0002]

2. Description of the Related Art Conventionally, as a protective member for a splice portion of a wire harness of this type, a conical protective cap 3 such as PCV has been provided as shown in FIGS. The central splice portion 2 formed by welding the core wires exposed from the ends of the plurality of electric wires 1 of the harness W / H by a method such as ultrasonic welding is inserted from the insertion opening 3a of the protective cap 3 and accommodated therein. doing.

To fix the splice portion, the cap 3 is provided with a tongue piece 3b extending in the lengthwise direction from the end edge of the insertion opening 3a of the cap 3, and the tongue piece 3b and the electric wire 1 are provided.
Tape 4 is wrapped around and fixed.

[0004]

However, in order to provide the tongue piece 3b on the protective cap 3, it is necessary to form the cap 3 by injection molding with a mold, which causes a problem of high cost. Further, as shown in FIG. 5 (C), when the wire harness W / H is assembled, there is a problem that it is difficult to fix the cap 3 to the jig 5 on the drawing board because the cap 3 is not caught.

The present invention has been made in order to solve the above-mentioned problems, and aims at cost reduction without molding a protective cap and fixing it to a jig on a drawing board when assembling a wire harness. The purpose is to make it easier.

[0006]

In order to solve the above-mentioned problems, according to claim 1 of the present invention, a centralized splice portion in which core wires exposed from ends of a plurality of electric wires of a wire harness are welded together is accommodated. A cap for protection, which is provided with a flexible tube made of resin of a predetermined length, covers one end of the tube from the splice part over the covering part of the wire, and at the other end of the tube of the splice part. A protective cap for a splice part of a wire harness, which is folded back from the vicinity of the tip to provide a part longer than the covering end edge of the one end, and the ends of the tube and the covering part of the electric wire are tape-wrapped and fixed. We provide the mounting structure.

According to the first aspect of the present invention, after covering one end of the flexible tube from the splice portion over the covering portion of the electric wire, the other end of the tube is folded back to form the elongated portion and the covering portion of the electric wire. Since it is a cap that is wrapped with tape and fixed, there is no need to mold it by injection molding, and it is only necessary to cut a ready-made tube to a predetermined length, so the mold cost,
Molding cost etc. are unnecessary, and it becomes possible to manufacture at low cost.
Also, when the jig is inserted into the folded-back portion at the tip, it is difficult to separate from the jig.

According to a second aspect of the present invention, there is provided a cap for accommodating and protecting a concentrated splice portion in which core wires exposed from ends of a plurality of electric wires of a wire harness are welded together.
A flexible tube made of resin having a predetermined length is provided, one end of the tube is covered from the splice portion to the covering portion of the electric wire, and the one end portion and the covering portion of the electric wire are tape-wrapped and fixed. The present invention provides a mounting structure for a protective cap of a splice part of a wire harness, characterized in that the other end of the tube is crushed at a position extending from a tip of the splice part to wind the tape to close the tube. ing.

According to the second aspect of the present invention, after covering one end of the tube from the splice portion over the covering portion of the electric wire, the one end portion and the covering portion of the electric wire are tape-rolled and fixed, Since the cap is fixed by winding the tape while crushing the end portion in the vicinity of the tip of the splice portion, the resin tube can be used similarly to the first aspect, and the manufacturing cost can be reduced. Further, since the tube is provided with a closed portion at the tip thereof to make a step, the tube is less likely to come off the jig when the jig is inserted into the step.

Further, the present invention provides a cap for accommodating and protecting a central splice portion, which is obtained by welding core wires exposed from ends of a plurality of electric wires of a wire harness, in a third aspect of the present invention. While the splice parts are made to adjoin in parallel, a flexible tube made of resin with a predetermined length is provided, and the tube is folded in two at an intermediate position in the length direction of the tube, and each end of the tube is connected to the splice part from each splice part of the wire. A structure for mounting a protective cap for a splice part of a wire harness, characterized in that both ends of the tube are covered with a covering part of an electric wire and the covering part of the electric wire is fixed together by tape. There is.

According to the third aspect of the present invention, in the case where the splice portions of the two electric wires are arranged adjacent to each other in parallel, the tube is folded in two at an intermediate position in the longitudinal direction, and each end of the tube is spliced at each end. Since each end is covered with a covering part of the electric wire and taped together with the covering part of the adjacent electric wire, one tube is used for the splice part of the two electric wires. In addition, it is possible to mount them simultaneously by one mounting operation. In addition, by inserting the jig into the two-folded portion, it becomes difficult for the jig to come off.

The tip of the tube covering the covering portion of the electric wire is obliquely cut. (Claim 4) By thus providing the cut portion on the tube, the tape winding surface between the tube and the covering portion of the electric wire is widened, so that the cap and the electric wire group can be firmly fixed to each other.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows the first embodiment, and a cap 6A is attached to the terminal concentrated splice portion 2 of the wire harness W / H. The cap 6A is made of a resin flexible tube 7 having a predetermined length L1. The tube 7 is made of, for example, soft vinyl chloride and has an inner diameter D
Can be smoothly inserted into the covering portion of the wire group 1 of the wire harness W / H, and the thickness is up to about 1 mm, and a commercially available off-the-shelf product can be used as it is.

The length L1 of the tube 7 has a length of one end 7a.
While covering the coating of wire group 1 to a sufficient depth a
[See FIG. 1B] When the other end portion 7b is folded back from the vicinity of the tip of the splice portion 2 [see FIG. 1C], the other end portion 7b is sufficiently more than the covering edge 7c of the one end portion 7a. The length b is set to be long.

The tube 7 is, as shown in FIG.
Connect one end 7a of the tube 7 from the splice part 2 to the wire group 1
1 (C) after covering to the depth a over the covering part of FIG.
1 by folding back the other end 7b of the tube 7 as shown in FIG.
As shown in (D), the tape 4 is wound around and fixed to the elongated portion 7d of the other end portion 7b and the covering portion of the wire group 1 to form the cap 6A.

The cap 6A does not need to be molded by injection molding as in the prior art, and the ready-made tube 7 can be simply cut to a predetermined length L1. Therefore, mold cost, molding cost, etc. are not required and the cost is low. Can be manufactured. Further, by inserting a pin of a jig (not shown) into the space S formed in the folded-back portion X, it is possible to hold the cap of the jig so as not to come off.

FIG. 2 shows a second embodiment. The cap 6B of the second embodiment is also formed of the flexible resin tube 7 as in the first embodiment. That is, a tube 7 having a predetermined length L2 is provided, and one end 7a of the tube 7 is obliquely cut [see a cut line c in FIG. 2 (A)]. The length L2 of the tube 7 is such that one end 7a is covered to a sufficient depth a of the covering portion of the wire group 1 of the wire harness [Fig.
(See (C)], the other end portion 7b is set to have a length d longer than the tip of the splice portion 2 by a required dimension.

As shown in FIG. 2C, the tube 7 is
After covering one end 7a of the obliquely cut tube 7 from the splice portion 2 to the covering portion of the electric wire group 1 to a depth a, tape 4 is wrapped around the cut portion 7e and the covering portion of the electric wire group 1. Along with the fixing, the other end 7b of the tube 7 is crushed near the tip of the splice portion 2 to close the tube 7 while the tape 4 is wound and fixed to form the cap 6B.

Since the cap 6B is formed of a resin tube as in the first embodiment, the cost can be reduced. In addition, cut part 7 on tube 7
By providing e, the tape winding surface between the tube 7 and the covering portion of the electric wire group 1 is widened, so that the fixing force of the cap 6B is strengthened. Furthermore, attach the tape 4 to the tip of the tube 7.
Since the stepped portion D having a small diameter is formed by winding, the cap 6B is hard to come off from the jig when the jig is inserted into the stepped portion D.

FIG. 3 shows a third embodiment, which is a cap 6C.
Is formed of a resin tube 7 as in the first and second embodiments. The cap 6C is used when the splice portions 2 and 2 of the two electric wire groups 1 and 1 are arranged in parallel and adjacent to each other.

A tube 7 having a predetermined length L3 is provided, and both ends 7a and 7b of the tube 7 are obliquely cut so as to have a substantially V shape. The length L3 of the tube 7 is such that when the tube 7 is folded in two at an intermediate position e in the length direction, the ends 7a, 7b
Is set so that the covering portions of the electric wires 1 and 1 can be respectively covered to a sufficient depth a. At this time, the cut portions 7e, 7e of both ends 7a, 7b of the tube 7 are shown in FIG.
As in (C), it is preferable to fold it in two so as to be outward. The intermediate position e is preferably welded to prevent the splice portions 2 and 2 of the electric wires 1 and 1 from coming into contact with each other.

The tube 7 is, as shown in FIG.
Both ends 7a and 7b of the obliquely cut tube 7 are folded in two at an intermediate position e in the longitudinal direction, and each end 7 of the tube 7 is folded.
A and 7b are covered from the respective splice portions 2 and 2 to the depth a by straddling the covering portions of the electric wire groups 1 and 1, respectively. afterwards,
As shown in FIG. 3 (E), the cut portions 7e, 7e and the covering portions of the electric wire groups 1, 1 are wound together with the tape 4 and fixed to form a cap 6C.

Since the cap 6C is formed of a resin tube as in the first and second embodiments, it can be manufactured at low cost, and the end of the portion corresponding to the covering portion of the wire group is obliquely cut. Therefore, the fixing force of the cap 6C becomes strong.

The cap 6C is composed of two electric wire groups 1,
Since it can be inserted into one splice portion 2 and 2 at the same time by one insertion operation and can be fixed at the same time by one winding operation of the tape 4, workability is improved. further,
When the jig is inserted into the space S of the folded portion e, the cap 6C becomes hard to come off.

FIGS. 4A to 4E show a fourth embodiment, in which the resin tube 7 is bent at the intermediate position e as in the third embodiment, and the splice portions 2 are inserted on both sides of the resin tube 7. ing. In the fourth embodiment, both ends 7a, 7b of the tube 7 are symmetrically cut on the same side (upper surface side in the drawing) as shown in FIG. 4 (A), and as shown in FIG. 4 (B). 2 so that both ends 7a and 7b are in the same direction.
It is folded in half and the splice portions 2 and 2 are inserted. After inserting the splice portions 2 and 2 in this way, the tape 4 is wound and fixed. However, since the diagonal cut portions are in parallel, the tape 4 can be securely fixed.

Further, as described above, both end portions 7 of the tube 7 are
When a and 7b are obliquely cut, as shown in FIG. 4 (E), the tube 7 is bent in the opposite direction to form the end portions 7a and 7b.
The diagonal cut portions of b are arranged in parallel, so that the tape can be securely fixed. As described above, the tube 7 may be bent in any direction, and it is not necessary to pay attention to the bending of the tube, which improves usability.

[0027]

As is apparent from the above description, in any of claims 1, 2 and 3 of the present invention, the cap does not need to be formed by injection molding, and a ready-made tube is simply specified. Since you only have to cut at the length, mold cost,
Molding cost etc. are unnecessary, and it becomes possible to manufacture at low cost.

When a cut portion is provided at the tip of the tube which covers the covering portion of the electric wire group as in claim 4,
Since the tape winding surface between the tube and the covering portion of the electric wire becomes wide, the fixing force of the cap becomes strong.

Further, the cap according to claim 3 can be simultaneously inserted into the splice portions of two electric wires by one insertion operation,
And because it can be fixed at the same time with one tape winding operation,
Workability is improved.

Further, in the caps of the first and third aspects, since the tip has the folded-back portion, when the jig is inserted into the space of the folded-back portion, it is difficult for the cap to come off from the jig. According to the cap of the second aspect, since the step portion is formed, when the jig is inserted into the step portion, the cap can be made difficult to come off from the jig.

[Brief description of the drawings]

FIG. 1 is a cap according to a first embodiment of the present invention,
(A) is a side view before covering the tube, (B) is a side view after covering the tube, (C) is a side view when the tube is folded back, and (D) is a side view of the cap.

FIG. 2 is a cap of the second embodiment, (A) is a side sectional view of a tube, (B) is a side view before covering the tube, (C) is a side view after covering the tube, and (D). ) Is a side view of the cap.

FIG. 3 is a cap according to a third embodiment, (A) is a perspective view of a tube, (B) is a side view of the tube, (C) is a side view before covering the tube, and (D) is covering the tube. FIG. 3E is a side view of the cap after being opened. FIG.

FIG. 4 is a cap according to a fourth embodiment, (A) is a perspective view of a tube, (B) is a side view before covering the tube, (C) is a side view after covering the tube, and (D). [Fig. 3] is a side view of the cap in a fixed state, and (E) is a side view of the tube bent in the opposite direction.

5A is a conventional cap, FIG. 5A is a side view before covering with a cap, FIG. 5B is a side view after covering with a cap, and FIG. 5C is a perspective view of a cap set on a jig. .

[Explanation of symbols]

 1 wire group 2 splice part 4 tape 6A, 6B, 6C cap 7 tube 7a one end part 7b other end part 7c covering end edge 7d elongated part 7e cut part e intermediate position W / H wire harness

Claims (4)

[Claims] 1. A cap for accommodating and protecting a central splice portion, in which core wires exposed from ends of a plurality of electric wires of a wire harness are welded together, wherein a flexible tube made of resin having a predetermined length is provided. , Covering one end of the tube from the splice part over the covering part of the electric wire, and folding the other end of the tube from near the tip of the splice part to provide a part longer than the covering end edge of the one end. A structure for mounting a protective cap on a splice portion of a wire harness, characterized in that both ends of the tube and a covering portion of the electric wire are fixed by winding a tape. 2. A cap for accommodating and protecting a central splice portion in which core wires exposed from ends of a plurality of electric wires of a wire harness are welded together, and a flexible tube made of resin having a predetermined length is provided. , Covering one end of the tube from the splice portion over the covering portion of the electric wire, and tape-fixing the one end portion and the covering portion of the electric wire, and the other end of the tube from the tip of the splice portion. A structure for mounting a protective cap for a splice portion of a wire harness, characterized in that the tube is closed by wrapping it with tape while crushing it at an extended position. 3. A cap for accommodating and protecting a central splice part, which is obtained by welding core wires exposed from the ends of a plurality of electric wires of a wire harness, wherein the splice parts of two electric wires are adjacent to each other in parallel. , Provided with a flexible tube made of resin of a predetermined length, folded in two at an intermediate position in the longitudinal direction of the tube, and covering each end of the tube from each splice portion to the covering portion of the electric wire, A protective cap mounting structure for a splice part of a wire harness, characterized in that both ends of the tube and a covering part of an electric wire adjacent to the tube are fixed together by tape winding. 4. The protective cap mounting structure for a splice part of a wire harness according to claim 2, wherein a tip of the tube covering the covering part of the electric wire is cut obliquely.