JPH08106831A - Grommet for wire harness - Google Patents

Abstract

PURPOSE: To improve workability in fixing a wire harness and stabilize its bending arrangement attitude in the case of holdingly fixing the wire harness, which penetrates into a penetration hole, in a prescribed bending attitude by setting an insertion tube part to a bending attitude, after fixing and attaching it to the partition board. CONSTITUTION: The rear half of an insertion tube part 3 is set to an elastic, flexible bellows part 8, a lock projection 7 which is provided in the outer circumference of a partition board attachment part 2 in a position opposed to the inside of the insertion tube part 3 in a bending attitude, and a bending attitude lock mechanism which is positioned in the inside of the insertion tube part 3 in a bending attitude and comprises a lock piece 5 having a lock hole 6 for the lock projection and installed on the insertion tube part 3, are provided and a wire harness 10 is holdingly set in a prescribed bending arrangement attitude by engagement of the bending attitude lock mechanism.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness penetrating arrangement for mounting a wire harness on a partition plate of a vehicle body or the like, mounting the wire harness on the partition plate and fixing the wire harness. The present invention relates to a grommet for a wire harness that is used to maintain a posture and to hold it, and to waterproof the penetrating part. Specifically, the wire harness that penetrates the partition plate is parallel or inclined with respect to the partition plate. The present invention relates to a wire harness grommet for bending and arranging and holding it in a posture.

[0002]

2. Description of the Related Art A wire harness grommet is a large-diameter ring body around which a peripheral fitting groove for fitting around a through hole of a partition plate of a vehicle body or the like is provided, and a wire harness is loosely inserted into an internal hollow portion. Of the partition plate attaching part and a small diameter insertion tube part projecting on one side of the partition plate attaching part and through which the wire harness is inserted in a waterproof manner are integrally connected, and the partition plate attaching part and The insertion tube portion has a basic structure of a rubber elastic body arranged on a common center line.

In order to attach and fix to a partition plate of a vehicle body or the like, the wire harness grommet attached to the wire harness is extruded in advance to the back side of the through hole to be attached, and then the insertion tube portion side is penetrated. By pulling out to the front side of the hole, the peripheral edge fitting groove of the partition plate mounting part and the through hole peripheral edge are engaged and fixed, and in the case of the above-mentioned bending arrangement, after the fixing and fixing, A work procedure and a method for setting a desired bending arrangement posture by a known bending arrangement means which will be described in detail are adopted.

That is, the publicly known example is the actual Kaihei 3-2081.
As shown in Japanese Patent Publication No. 8 (see FIG. 4A),
The partition plate attachment portion 2 of the wire harness grommet 1 mounted on the wire harness 10 is attached to the partition plate 1 by the above-described method.
1 is attached and fixed to the through hole 12 and the insertion tube portion 3 having a straight shape with the partition plate attachment portion 2 is bent to stand upright on the partition plate attachment portion 2 as shown by the dotted line. As a method of a tape winding set which is fixed to the locking rod portion 14 by a tape winding 15 and is held in a required bending arrangement posture, as shown in Japanese Utility Model Laid-Open No. 64-21925 (see FIG. )), The same is attached and fixed to the through hole 12, and the insertion tube portion 3 having a straight shape is bent to form the insertion tube portion 3
There is a locking arm that locks the locking arm 16 provided on the side of the locking projection 17 and holds the locking arm 16 in a desired bending posture.

[0005]

Among the above-mentioned conventional techniques, the former tape winding set is one in which the tape winding 1 is performed in a narrow space of the partition plate 11 in which the wire harness 10 is arranged.
Since the work of No. 5 is required, it is difficult to fix the tape winding, and the workability of arranging the wire harness is hindered, and sometimes the tape winding is not properly formed, and the bending arrangement posture of the wire harness 10 is collapsed. There is a problem in quality that occurs, and further, the winding margin of the tape winding 15 is set in the insertion tube portion 3.
Since the insertion tube part 3 is lengthened and the grommet 1 is enlarged, it is difficult to insert the wire harness 10 into the insertion tube part 3 forcibly inserted to make it waterproof. Become, grommet for wire harness 1
However, there is a problem that the workability of attaching the wire harness to the wire harness is reduced.

On the other hand, the latter has a structure in which the engaging arm 16 and the like are present in the insertion tube portion 3, so that the insertion tube portion 3 is also lengthened, the grommet 1 is enlarged, and the wire harness 10 is attached. The workability of mounting is deteriorated, and the locking arm 16 and the locking projection 17 on the side of the insertion tube portion 3 in the bent posture are locked in a narrow space, which is difficult to perform. Since only one side portion of the portion 3 is locked, it is difficult to hold the insertion tube portion 3 having elastic restoring force, the bending posture becomes unstable, and the holding pipe receives a strong holding stress including torsion. There is a possibility that the arm 16 may be damaged or damaged, and the bent posture of the wire harness may be lost.

The present invention provides a wire harness grommet for bending and arranging which solves the above-mentioned problems of the prior art.

[0008]

The grommet for a wire harness of the present invention, which solves the above technical problems, is "a large-diameter ring-shaped partition plate attachment portion that is attached and fixed to a through hole of a partition plate of a vehicle body / device. On one side, in the wire harness grommet in which a small-diameter insertion tube portion for inserting the wire harness in a waterproof manner is continuously provided,
The latter half of the insertion tube portion is formed into a bendable bellows portion, and a locking projection on the outer periphery of the partition plate attachment portion that is erected at a position facing the inside of the bending posture of the insertion tube portion and the insertion portion. A bending posture locking mechanism is provided, which is erected inside the bending posture of the pipe portion and includes a locking piece having a locking hole for the locking projection, and the insertion is performed by engaging the bending posture locking mechanism. It has a structure that holds and sets the pipe part in the required bending posture.

[0009]

The grommet for a wire harness of the present invention having the above-described structure is mounted on a wire harness, fixedly attached to a through hole of a partition plate of a vehicle body or the like, and then bent through the insertion pipe portion. The bending posture of the insertion tube portion is locked by engaging the locking hole and the locking projection of the locking piece in the bending posture easily by
The wire harness arranged through the partition plate through hole can be held in a desired bending posture.

When the bending posture is locked, since the locking pieces that are adjacent to each other by the bending come on the locking projections on the partition plate attachment portion side that are present inside the bending posture, Only by pressing the locking pieces to engage them, it is possible to perform accurate locking, which is extremely easy to do. Further, the locking piece and the locking projection are present between the partition plate attaching portion and the insertion tube portion facing each other, and the elastic restoring force of the insertion tube portion due to bending is retained between the engagement piece and the locking piece in the engaged state. Since it suffices to carry by the simple tensile stress generated on the center line of the locking projection, the locking posture is mechanically extremely stable. Therefore, due to vibrations etc. when the vehicle is running,
There is very little risk that the locking will come off or the locking piece will be damaged,
The bending arrangement posture of the wire harness becomes stable.

Since the bending posture locking mechanism composed of the locking piece and the locking projection is dispersed in the insertion tube portion and the partition plate attachment portion, the insertion tube portion is not stretched. Good workability of inserting the wire harness into the insertion tube can be secured.

[0012]

Embodiments will be described in detail below based on embodiments. First, referring to FIG. 1 showing a first embodiment of the present invention, a peripheral edge fitting groove 4 to be fitted to the peripheral edge of a through hole 12 of a partition plate 11 of a vehicle body.
With a large-diameter ring-shaped partition plate attachment portion 2 provided around the outer periphery, and a small-diameter insertion tube portion 3 protruding from one side of the partition plate attachment portion 2 for inserting the wire harness 10 in a waterproof manner. In the wire harness grommet 1 in which the centers of the partition plate attachment portion 2 and the insertion tube portion 3 are on the common center line 14, the latter half of the insertion tube portion 3 (the partition plate attachment The portion closer to the portion 2) is formed on the bellows portion 8 which is elastically bendable, and further, the locking piece 5 provided upright on the front half portion 9 of the insertion tube portion 3 and the outer periphery of the partition plate attachment portion 2 are projected. A bending posture locking mechanism including the locking protrusions 7 is provided.

That is, the locking projection 7 forms a short pillar having a bulging head 13 for preventing slipping off, and the insertion tube portion 3 in a bent posture.
Is provided upright on the outer periphery of the partition plate attachment portion 2 at a position facing the inside of the, and the locking piece 5 has a locking hole 6 for locking the locking projection 7, and the insertion tube portion 3 in the bent posture. It is located inside and has a shape that is above the locking projection 7 in its bending posture.

The wire harness grommet 1 mounted on the wire harness 10 is attached to the through hole 12 of the partition plate 11.
After being fixedly attached to the insertion tube portion 3, the wire harness 10 protruding from the insertion tube portion 3 is bent with the bellows portion 8 as a bending start point, and the adjacent locking piece 5 is hooked on the locking projection 7 to fix the insertion tube portion. Wire harness 10 that locks and sets 3 in a bending posture and follows the bending set of the insertion tube portion 3.
Are arranged and held in a required bending posture with respect to the partition plate 11.

The above embodiment has the above-mentioned effects,
When the wire harness 10 penetrating the through hole 12 is grasped and bent by a hand, the locking piece 5 is located on the locking projection 7, so that the wiring harness 10 can be engaged very easily in a narrow space for disposing the wire harness 10. You can set the stop. And since the insertion tube part 3 does not lengthen, the wire harness 10 to the insertion tube part 3 is provided.
There is no decrease in insertability.

Next, a wire harness grommet 1 according to another embodiment of the present invention will be described with reference to FIGS.
That is, first, in FIG. 2, the locking piece 5 has a gate shape in which the inner space serves as the locking hole 6, and in this FIG. 2, the insertion tube portion 3 is bent to lock the locking piece 5. When the locking projection 5 is located above the stop projection 7, the locking projection 5 can be engaged with the locking projection 5 with one touch by merely pushing down the locking projection 5 a little.

On the other hand, in FIG. 3, the locking hole 6 of the locking piece 5 is shown.
Are provided in the height direction of the locking piece 5. According to this embodiment, by selecting the locking hole 6, the bending posture of the insertion tube portion 3 can be selectively set to various bending postures having different bending angles as shown by the dotted line in the figure.

[0018]

As described above, the wire harness grommet of the present invention is attached and fixed to the through hole of the partition plate of the vehicle body or the like, and the insertion tube portion is set in a bent posture, so that the wire penetrating the partition plate. In the one that holds the harness in a bent posture,
It is easy and accurate to set the bending posture, and secures good workability of inserting the wire harness into the insertion tube, and the workability of penetrating and bending the wire harness into the partition plate. And an effect of stabilizing the bending arrangement posture.

[Brief description of drawings]

FIG. 1 shows a grommet for a wire harness of a first embodiment of the present invention, (A) is a front view thereof, (B) is a side view thereof,
(C) is a front view for explaining the usage method and usage state

FIG. 2 shows a wire harness grommet of another embodiment of the present invention, (A) is a front view thereof, and (B) is a side view thereof.

FIG. 3 shows a wire harness grommet according to another embodiment of the present invention, in which (A) is a front view thereof and (B) is a side view thereof.

FIG. 4 shows a conventional wire harness grommet,
Front view of both (A) and (B)

[Explanation of symbols]

 1 Grommet for Wire Harness 2 Separation Plate Attachment Part 3 Insertion Pipe Part 4 Peripheral Fitting Groove 5 Locking Piece 6 Locking Hole 7 Locking Protrusion 8 Bellows Part 9 Front Half of Insertion Pipe Part 10 Wire Harness 11 Separation Plate 12 Penetration Hole 13 Bulging head 14 Center line

Claims (2)

[Claims] 1. A small-diameter insertion pipe portion for waterproofly inserting a wire harness is provided on one side of a partition plate attachment portion of a large-diameter ring body that is attached and fixed to a through hole of a partition plate of a vehicle body / device. In the wire harness grommet, the latter half of the insertion tube portion,
It is formed into a bendable bellows part, and it is erected inside the bending posture of the insertion pipe part and the locking projection on the outer periphery of the partition plate attachment part which is erected at a position facing the inside of the bending posture of the insertion pipe part. A bending posture locking mechanism that is provided and that includes a locking piece having a locking hole for the locking protrusion is provided, and the insertion tube portion is held in a desired bending posture by the engagement of the bending posture locking mechanism. Grommet for wire harness featuring a set structure. 2. The grommet for a wire harness according to claim 1, wherein a plurality of locking holes are provided in a height direction of the locking pieces.