JP3352897B2 - Grommet integrated molding harness - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle for protecting a harness in a vehicle such as an automobile when the harness passes through a place provided with a partition wall such as between an occupant compartment and an engine compartment. The present invention relates to a harness in which a grommet is integrally formed, and more particularly, to a configuration in which the harness is branched or integrated in the grommet.

[0002]

2. Description of the Related Art FIG. 4 shows an example of the structure of a conventional grommet-integrated harness 90 (hereinafter abbreviated as a harness 90) of this type, and shows a plurality of wiring wires, for example, two wiring wires. When the passages 91 and 92 pass through the partition wall 80 provided between the passenger compartment and the engine compartment, a grommet 93 made of a rubber member or the like is integrally formed at that portion.

At this time, for example, if the wiring wire 91 needs to be branched into two depending on the purpose of use in the engine room, a joining portion P is provided in advance to the wiring wire 91 and the wiring wire 91a is provided. And the wiring wire 91b are branched so that the grommet 93 is integrally formed by covering the joint P.

[0004]

However, in the above-described harness 90 having the conventional structure, if both the wiring wire 91 and the wiring wire 92 need to be branched, for example, the connection portion P where the core wire is exposed is formed. The two locations are in a state of being extremely close to each other, for example, a grommet 93.
In the process of forming the wiring, the two contacts come into contact with each other, resulting in a wiring failure or the like. As a result, only one wiring wire can be branched in one grommet 93, and the degree of freedom in designing and manufacturing the internal wiring of an automobile is increased. Has been lost, and solving this problem has been an issue.

[0005]

According to the present invention, as a specific means for solving the above-mentioned conventional problems, a plurality of wiring wires are formed integrally through a grommet,
In the grommet integrally formed harness in which a joining portion where branching and integration of wiring wires is performed is formed in the grommet, the plurality of wiring wires are formed on an insulating plate-like member in a wire diameter of each wiring wire. By providing a grommet-integrated molded harness, wherein the gap between the joining portions is ensured by a separator provided with a matching fitting concave portion, and the grommet is integrally formed in the grommet including the separator. It is to solve the problem.

[0006]

Next, the present invention will be described in detail based on an embodiment shown in the drawings. 1 shows a grommet-integrated molded harness 1 according to the present invention. The grommet-integrated molded harness 1 allows a plurality of wiring wires, for example, a wiring wire 2 and a wiring wire 3 to pass through a grommet 4. This is similar to the conventional example in that the integral formation is performed.

[0007] Also, the point that the wiring wire is branched in the grommet 4 is similar to the conventional example.
In the present invention, for example, the grommet integrally formed harness 1 is a harness for lighting a headlamp, and the wiring wire 2
As in the case where the passing beam lighting and the wiring wire 3 are for traveling beam lighting, both the wiring wires 2,
3 is required to be branched.

Accordingly, the two joints P1 and P2 are present in the grommet 4 in a state of being extremely close to each other. For example, when the mold for forming the grommet 4 is clamped, the wiring wires 2 and 3 easily causes contact between the joint P1 and the joint P2, for example, by turning on a low beam switch, all filaments for the low beam and the traveling beam are turned on. It is in a state where a cause of failure such as running is likely to occur.

In the present invention, a separator 5 is provided in order to cope with this. As shown in FIG. 2, the separator 5 is an insulating plate-like member such as a resin, for example, a rectangular or disk-like member. It is formed in an appropriate shape, and a fitting concave portion 51 having a number and a shape corresponding to the wiring wires 2 and 3 is provided on the outer periphery thereof.

At this time, the fitting recess 51 splits the wiring wire 2 into a wiring wire 2a and a wiring wire 2b, and the wiring wire 3 is similarly divided into the wiring wires 3a and 3b.
In this embodiment, the final number at which branching is performed is provided, as in the case where two branches are performed at b.

The shape of the fitting recess 51 has a hole 51a having a hole diameter substantially corresponding to the wire diameter including the covering of the wiring wires 2 and 3, and a width smaller than the hole diameter of the hole 51a. The hole 51a is formed in a substantially inverted Ω-shape with a groove 51b for making the hole 51a continuous with the outer diameter.
The wiring wires 2 and 3 fitted in are not easily dropped and moved.

FIG. 3 shows a state where the wiring wires 2, 2a, 2b and the wiring wires 3, 3a, 3b are assembled to the separator 5.
Side, the wiring wire 2 after the two branches are performed
a and two fitting recesses 51 in which the wiring wire 2b is adjacent
Respectively.

On the wiring wire 3 side,
Similarly, the wiring wire 3a and the wiring wire 3b after the bifurcation is performed are respectively fitted into the two fitting concave portions 51 adjacent to each other. At this time, the wiring wires 2a and 2b are fitted. By optimizing the positions of the mating concave portion 51 and the fitting concave portion 51 into which the wiring wires 3a and 3b are fitted, the joining portion P1 on the wiring wire 2 side and the joining portion P2 on the wiring wire 3 side are formed.
Is securely secured and does not easily contact.

In the present invention, as described above, the wiring wires 2, 2a, 2b and the wiring wires 3, 3,
After the parts 3a and 3b are assembled, the grommet 4 including the separator 5 is integrally formed. Therefore, the gap between the joint P1 and the joint P2 is reliably secured by the separator 5. The two joints P1 and P2 do not come into contact with each other due to the stress generated when the grommet 4 is formed.

Therefore, in the grommet-integrated molded harness 1 (see FIG. 1) according to the present invention, a plurality of joints can be formed in the grommet in a state where there is no possibility of causing a short circuit accident or the like between the wiring wires. This makes it possible to branch a plurality of wiring wires, thereby increasing the degree of freedom in designing and manufacturing the grommet integrated molding harness.

In the above description, the description has been made assuming that each of the wiring wires is divided into two branches. However, the present invention does not limit the number of the wiring wires.
The number of branches is not limited. Furthermore, the number of separators integrally formed in the grommet is described as one, but the number of separators is not limited.

[0017]

As described above, according to the present invention, a plurality of wiring wires can be joined to each other by a separator provided with a fitting concave portion corresponding to the wire diameter of each wiring wire on an insulating plate member. The grommet is formed integrally with the grommet including the separator in a state where an interval is secured, so that the grommet integrally molded harness is provided. It is assumed that the connecting wire moves and no contact occurs between the joints.

By integrally forming the grommet including the separator so that the joint is in the grommet, contact is not generated between the joints even in the grommet forming step. In this method, multiple joints can be formed in a grommet, which has been impossible in the past, and the degree of freedom in designing and manufacturing is increased, and it is extremely effective in rationalizing internal wiring in automobiles and other vehicles, reducing costs, etc. It is.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a grommet integrated molding harness according to the present invention.

FIG. 2 is a plan view showing a separator as a main part of the same embodiment.

FIG. 3 is an explanatory view showing an assembled state of a wiring wire and a separator according to the same embodiment.

FIG. 4 is a sectional view showing a conventional example.

[Explanation of symbols]

 1 grommet integrated molding harness 2, 2a, 2b wiring wire 3, 3a, 3b wiring wire 4 grommet 5 separator 51 fitting recess 51a hole 51b groove P1, P2 ... joint

Continuation of the front page (56) References JP-A-6-38339 (JP, A) JP-A-7-221468 (JP, A) JP-A 2-75970 (JP, U) JP-A 51-5028 (JP , U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F16L 5/02 B60R 16/02 622 H01B 17/58 H02G 3/22

Claims (1)

(57) [Claims] 1. A grommet-integrated molded harness, wherein a plurality of wiring wires are penetrated into a grommet and integrally formed, and a joint portion for branching and integrating the wiring wires is formed in the grommet. The wiring wire of the above is a state in which the gap between the joints is secured by a separator in which a fitting concave portion corresponding to the wire diameter of each wiring wire is provided on an insulating plate member, and the grommet including the separator is provided. A grommet integrally formed harness, which is integrally formed therein.