JPH08106833A - Grommet for wire harness - Google Patents

Abstract

PURPOSE: To improve workability in fixedly attaching a grommet to a penetration hole and prevent failure in attaching to the penetration hole in the grommet for a wire harness in which a partition board attachment part and an insertion tube part are provided on the common central line. CONSTITUTION: A bridge-shaped finger tip grasp part 5 having a rear bridge pier 6B on its outer circumference of a partition board attachment part 2 and a front bridge pier 6A on the tip part of the insertion tube part 3 is provided parallel to the central line 11 so that the lower half part of a circumferencial edge fitting groove 4 is set to such an inclined attitude as fitting in a penetration hole 8. After that, the grommet 1 in the inclined attitude is made to rotate by rotation force of a finger tip grasping the finger tip grasp part 5 and the upper half part of the circumferencial edge fitting groove 4 is made to fit to the upper half part so that a to-step attachment method for fixedly attaching the fitting hole 8 can be actualized.

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, by mounting the wire harness on the partition plate and fixing the wire harness through the through hole. The present invention relates to a wire harness grommet that is used for maintaining a posture and for waterproofing a penetrating portion of the wire harness.

[0002]

2. Description of the Related Art Grommet 1 for wire harness (hereinafter,
The grommet 1 is simply referred to as a grommet 1) (see FIG. 3). A peripheral fitting groove 4 that is fitted to the peripheral edge of the through hole 8 of the partition plate 7 of the vehicle body or the like is provided around the outer circumference, and the wire harness 10 is loosely inserted into the internal space. The wire harness 1 is attached to one side of the partition attachment part 2 of the large-diameter annulus.
0 has a basic structure of a rubber elastic body in which a small-diameter insertion tube portion 3 for waterproof insertion is integrally connected, and a normal type has a center of the partition plate attachment portion 2 and the insertion tube portion 3 , And has a straight shape arranged on the common center line 11.

To attach and fix the grommet 1 mounted on the wire harness 10 to the through hole 8 of the partition plate 7,
The grommet 1 is previously positioned on the back side of the partition plate 7, and then the wire harness 10 penetrating the through hole 8 is pulled in by hand to pull out the grommet 1 to the front side of the partition plate 7 to attach the partition plate. A method is adopted in which the outer periphery of the portion 2 is elastically reduced in diameter so that the peripheral edge fitting groove 4 is fitted to the peripheral edge of the through hole 8.

[0004]

In the conventional grommet 1 described above, the grommet 1 is attached to the front side of the partition plate 7 by gripping the straight wire harness 10 (or the insertion tube portion 3). By pulling out and interfering with the through hole 8 due to the pulling out, the outer periphery of the partition plate attaching portion 2 can be simultaneously elastically reduced in diameter and fitted, so that a complicated work requiring a large pulling force is performed. The efficiency is low, which is a factor that hinders the productivity of disposing the wire harness 10 on the vehicle body or the like.

Further, due to the complexity of the work, the through hole 8
If the wire harness 10 is not properly attached to the wire harness 10, the wire harness 10 may be deformed in posture, water may leak into the room, or the like. The present invention provides a grommet that solves the above-mentioned drawbacks of the prior art.

[0006]

A grommet for a wire harness of the present invention which solves the above technical problem is a "large-diameter ring in which a peripheral fitting groove fitted in a through hole of a partition plate of a vehicle body or the like is provided around the outer circumference. On one side of the partition plate attaching part of the body, a small diameter insertion tube part for inserting the wire harness in a waterproof state is integrally connected, and the center of the partition plate attaching part and the insertion tube part is set to a common center. In a wire harness grommet arranged in a wire, having a base end on the outer periphery of the partition plate attachment portion, extending in the direction of the center line, and a front end on the outer periphery of the insertion pipe portion or the insertion pipe. It has a bridge-shaped fingertip hooking part that is fixed to the wire harness that sticks out of the section. "

That is, the grommet for a wire harness of the present invention makes it easy to fit into the through hole by hooking the fingertip on the fingertip hooking portion and pulling out and rotating the partition plate attaching portion. The fingertip hooking portion is set to have a space under the bridge that is sufficient to put and hold the fingertip and a mechanical strength that can withstand the operating force.

[0008]

In the wire harness grommet of the present invention having the above-described structure, when the wire harness grommet is attached and fixed to the through hole of the partition plate, only the lower half portion of the peripheral edge fitting groove on the side where the fingertip hooking portion is present is inserted into the through hole. To the slanted posture, and then put your fingertips into the fingertip hooks and rotate the slanted grommet.
A two-step fitting method in which the upper half of the peripheral fitting groove is fitted in the through hole can be adopted.

The rotation of the grommet for the two-step fitting only pushes down the fingertip locking portion to transmit an effective rotational force to the grommet, and the fitting of the peripheral fitting groove due to the rotation is Only the upper half of the peripheral fitting groove on the non-existing side of the fingertip hooking part is necessary, and the rotational operation force required for fitting is small, so fitting work into the through hole is easy, and Be accurate.

[0010]

Embodiments will be described in detail below based on embodiments. First, with reference to FIG. 1 showing an embodiment of the present invention, a partition plate of a large-diameter ring body having a peripheral fitting groove 4 fitted around the through hole 8 of a partition plate 7 of a vehicle body is provided around the outer periphery. A small-diameter through pipe part 3 for waterproofly inserting the wire harness 10 is integrally provided on one side of the attachment part 2, and the partition plate attachment part 2 and the insertion pipe part 3 are connected to a common center line 11. In the wire harness grommet 1 arranged above, a bridge-shaped fingertip hooking portion 5 having a rear pier 6B on the outer periphery of the partition plate attaching portion 2 and a front pier 6A on the outer periphery of the tip end portion of the insertion tube portion 3 Is integrally raised, and the fingertip hooking portion 5 is
It has a shape in which a fingertip can be put into the space 9 under the bridge and can be hooked, and has sufficient mechanical strength to withstand a pulling load by the fingertip, and is arranged parallel to the center line 11.

When the wire harness 10 fitted with the grommet 1 is attached to and fixed to the through hole 8 in a state where the wire harness 10 penetrates the through hole 8 and the grommet 1 is exposed to the back side of the partition plate 7. First, while fitting the lower half portion of the peripheral edge fitting groove 4 on the fingertip locking portion 5 side of the grommet 1 into the through hole 8, the peripheral edge fitting groove 4 of the upper half portion of the non-existing portion of the fingertip locking portion 5 is The grommet 1 is rotated in the direction of the arrow E in the drawing by pulling the fingertip hooking portion 5 in the direction of the arrow F in the drawing by forming a tilted posture close to the through hole 8 and then pulling the fingertip hooking portion 5 in the direction of the arrow F in the drawing. The upper half of the partition plate attaching portion 2 protruding to the back side is elastically reduced in diameter by interference with the through hole 8 and passed through the through hole 8, and the entire peripheral edge fitting groove 4 is fitted to the peripheral edge of the through hole 8. It is designed to be worn and fixed.

The above-mentioned embodiment of FIG. 1 has the above-mentioned effect. That is, the lower half part of the peripheral edge fitting groove 4 is preliminarily fitted into the through hole 8 in an inclined posture, and then the grommet 1 is rotated by using the fingertip retaining portion 5 to rotate the upper half part of the peripheral edge fitting groove 4. Since the two-step method of fitting is adopted, it is easier to attach and fix the through-hole 8 to the conventional grommet 1 than the conventional grommet 1, and the improvement of the fitting workability prevents defective defective attachment. it can.

Then, the fingertip hooking portion 5 is the front pier 6
Since A is present at the tip end portion of the insertion tube portion 3, the rotational force of the fingertip locking portion 5 causes the grommet 1 to generate an amplified rotational moment with the front pier 6A as the power point, so that the grommet 1 can be easily It can be rotated and fitted with a "sling".

Next, another embodiment of the present invention will be described with reference to FIG. That is, in FIG. 2, the fingertip hooking portion 5 similar to that of the above-described embodiment is provided, and the grommet 1 before being attached to the wire harness 10 has the fingertip hooking portion when the through hole 8 is attached. An upright column 13 which is 5 is erected in parallel with the center line 11. After mounting the grommet 1 at a predetermined position of the wire harness 10, the upright column 13 is bent to insert the tip portion 14 into the insertion tube section 3. The wire harness 10 protruding from the tip end of the insertion tube portion 3 or the insertion tube portion 3 is co-wound and fixed by a tape winding 12 to form a bridge-shaped fingertip hooking portion 5 of a pier at both ends parallel to the center line 11, and the fingertip hook The stop 5 is adapted to be used in the same way as in the embodiment of FIG. The mold of the grommet 1 of the embodiment of FIG. 2 is simpler than that of the embodiment of FIG. 1 and can be easily molded.

[0015]

As described above, the wire harness grommet of the present invention improves the workability of attaching and fixing the wire harness grommet to the partition plate through hole of the vehicle body / equipment and improves the workability of the wire harness vehicle body. To improve productivity.
At the same time, with the improvement of the workability, it is possible to prevent defective products from being improperly attached to the partition plate through holes and to stabilize the grommet performance.

[Brief description of drawings]

FIG. 1 shows a grommet for a wire harness according to an embodiment of the present invention, (A) is a front view thereof, (B) is a side view thereof,
(C) is a front view showing the attachment method and the attachment state to the partition plate through hole.

FIG. 2 shows a wire harness grommet of another embodiment of the present invention, (A) is a front view before mounting the wire harness,
(B) is a front view after mounting the wire harness

FIG. 3 is a front view showing a structure of a conventional wire harness grommet and a method of attaching the wire harness to a partition plate through hole.

[Explanation of symbols]

 1 Grommet for Wire Harness 2 Separation Plate Attachment Part 3 Insertion Pipe Part 4 Peripheral Fitting Part 5 Finger Tip Stopping Part 6A / 6B Bridge Pier 7 Separation Plate 8 Through Hole 9 Under Bridge Space 10 Wire Harness 11 Centerline 12 Tape Winding 13 Upright Column 14 Tip of upright column

Claims (2)

[Claims] 1. A side of a partition plate attachment portion of a large-diameter ring body having a peripheral edge fitting groove fitted around a through hole of a partition plate of a vehicle body, etc.
A small-diameter insertion tube portion that penetrates the wire harness in a waterproof manner is integrally provided, and the center of the partition plate attachment portion and the insertion tube portion is
In a wire harness grommet arranged on a common center line, having a base end on the outer periphery of the partition plate attachment portion, extending in the direction of the center line, and a front end of the insertion pipe portion outer periphery or A grommet for a wire harness having a structure in which a bridge-shaped fingertip hooking portion fixed to the wire harness protruding from the insertion tube portion is provided. 2. The grommet for a wire harness according to claim 1, wherein the partition plate attaching portion and the insertion tube portion each include a fingertip hooking portion having a bridge pier.