JP2575039Y2 - Grommet mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly structure of a waterproof grommet of a wire harness which is routed from a door to a body of a vehicle.

[0002]

2. Description of the Related Art FIG. 8 is an exploded perspective view showing a conventional grommet assembling structure described in Japanese Utility Model Publication No. Hei 2-10737, and FIG. 9 is a view C in FIG. In order to eliminate the troublesome work of inserting a waterproof grommet through a hole (not shown) provided in the front end surface 36 (FIG. 9) of the vehicle door panel 35, this structure is provided with a lateral groove 37 at the front end of the door panel, and a wire harness is provided. A cylindrical elastic grommet 39 through which the grommet 38 has been inserted is fitted into the lateral groove 37, and the flange plate 40 of the grommet 39 is screwed with a door panel 3 (not shown).
The grommet 39 is fixed to the lateral groove 37 and pressed down from above with a trim cover 41 (FIG. 9), so that the grommet 39 is brought into close contact with the lateral groove 37 for waterproofing.

The grommet 39 is shown in FIG.
As shown in a cross-sectional view (assembled state) equivalent to -D, a fitting portion 43 for the lateral groove 37 is integrally provided on one side of a cylindrical main body 42 made of elastic rubber, and a door panel front end face 36 is provided on the other side. And an inner member 45 for engagement with the cowl side panel 44 facing the front side. A cowl connector 46 is led out of the inner member 45 by a wire harness 38.

However, in the above-mentioned conventional structure, the flange plate 40 is attached to the grommet 39,
The work of fixing the flange plate 40 to the door panel 35 with screws was troublesome. Also, the trim cover 41
In order to hold down the grommet 39 and seal it, it is necessary to improve the rigidity and dimensional accuracy of the holding portion of the trim cover 41. Furthermore, since the inside of the grommet 39 is hollow, when the grommet 39 is cracked, there is a concern that water may enter the vehicle body.

[0005]

SUMMARY OF THE INVENTION In view of the above, the present invention makes it possible to easily fix the grommet to the door panel, and to perform waterproofing without pressing the grommet with the trim cover.
Moreover, it is an object of the present invention to provide a grommet assembling structure in which water does not enter into the body even when the grommet is damaged.

[0006]

In order to achieve the above object, the present invention provides an L-shape formed at an end of a vehicle door panel.
Grommet with wire harness inserted into fitting groove of
In the assembled structure of the mating grommet,
Using an elastic material as a material, an L-shaped solid pressed into the fitting groove.
A fixed mold part, formed integrally with the fixed mold part,
The wire harness leading side that protrudes outside from the fitting groove
And a grommet inside.
That the wire harness is in close contact with the
(Claim 1). For retaining at the opening edge of the fitting groove
A receiving portion is provided so as to protrude, and a step portion is provided on the bottom side of the fitting groove.
Is provided on the fixed mold portion,
A contact portion to be press-fitted is formed between the step portion and the contact portion.
Is larger than the distance between the retaining portion and the step portion.
It is also effective that the setting is made well (claim 2). Also before
A locking clip protrudes from the bottom wall surface of the fixed mold section,
In the bottom wall of the fitting groove, an engagement hole for the locking clip is provided.
And the neck length of the locking clip is the bottom of the fitting groove.
Shorter than the distance between the outer wall surface and the bottom wall surface of the fixed mold part
The setting is also effective (claim 3). In addition,
Connect the wire harness to the tip of the flexible mold
The fitting accommodating portion is formed with respect to the
At the end, the seal lip for the cowl side panel is formed
It is also effective to achieve this (claim 4).

[0007]

According to the first aspect of the present invention, an elastic fixed molding is provided.
All parts are in close contact with the inner peripheral surface of the fitting groove,
Demonstrate. Wire harness adheres to elastic grommet
As a result, inundation along the wire harness is prevented. Claim
In the configuration of 2, the fixed mold part is in close contact with the fitting groove
And exhibit high waterproofness. In the configuration of claim 3
The locking clip has its neck extended,
Step is pulled toward the locking clip in the fitting groove.
And firmly fixed. In the configuration of claim 4
The connector on the cowl side panel side
Connection, the seal lip of the fitting housing
Adhere to Luzide panel.

[0008]

FIG. 1 is a perspective view showing an embodiment of a grommet assembling structure according to the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. In the drawing, reference numeral 1 denotes a door panel, and 2 denotes a wire harness integrated grommet fitted in an L-shaped fitting groove 3 formed in the front end of the door panel 1.

As shown in FIG. 3, the fitting groove 3 is formed by making an L-shaped orthogonal communication with the front end face 4 and the inner side face 5 of the door panel 1, and the groove 3a on the front end face 4 side. Is the bottom wall 6
On the side, there is a step 7 along the longitudinal direction of the groove, and at the opening edge thereof, a receiving portion 8 for preventing the wire harness integrated grommet 2 from being formed is formed. Further, on the bottom wall 6 of the fitting groove 3, a plurality of circular engaging holes 9 for locking the grommet are provided in parallel in the longitudinal direction of the groove.

The door panel 1 intersecting the fitting groove 3
Is provided with an engagement groove 10 for a weather strip. Further, a waterproof sheet 1 is provided on the inner surface 5 of the door panel.
No. 1 is stuck.

On the other hand, the wire harness-integrated grommet 2 has a wire harness 12 which is bent in a crank shape along the shape of the front end of the door panel 1 as shown in FIG. An elastic resin material is integrally molded. The cowl side panel 15 (from a front end surface 14 of the fixed mold portion 13 having a substantially L-shape with respect to the fitting groove 3 of the door panel 1). This is schematically constituted by a flexible mold portion 16 protruding toward FIG. 2). Here, since the wire harness 12 is integrally formed of an elastic resin material in a bent state, an excessive stress is not applied to the wire harness integrated grommet 2 at the time of assembling to the door panel 1 or opening and closing of the door, and the wire harness 12 is hardly damaged. . In addition, the grommet 2 is integrated as shown in FIG.
In close contact with the wire harness 12 at the part
Therefore, the waterproofness inside the grommet is improved.

On the bottom wall surface 17 of the fixed mold portion 13,
A plurality of bushing-like elastic locking clips 18 are integrally protruded from the engaging holes 9 in the fitting groove 3, and a mold portion 13 is formed in the groove 3 a on the front end face 4 side of the door panel.
a is a stepped contact portion 19 with respect to the step 7 of the fitting groove 3.
have. When the front end surface (edge) 14 of the mold portion is pressed by the retaining portion 8, the contact portion 19 and the step portion 7 come into close contact with each other. Further, the weather strip 2 is located near the bent portion of the mold portion 13.
A seal lip portion 21 is provided to protrude around the groove 0 and the peripheral wall of the groove 3a.

The elastic locking clip 18 is shown in FIG.
Next, as shown in the sectional view taken along the line BB of FIG. 4 showing the locking clip 18, the state of being fitted in the fitting groove 3 of FIG.
The height of the stepped contact portion of the mold portion 13a is a> a ', the neck length of the clip 18 is b <b', that is, the stepped contact portion 19 is compressed by fitting, and the clip 18 is The dimensions of each part are set so as to be extended to secure the sealing property and the locking force. a 'is a receiving portion 8 for retaining and a step portion.
And b 'is the distance between the outer surface of the bottom wall 6 of the fitting groove 3 and the fixing mode.
This is the distance from the bottom wall 17 of the shield 13. The clip 1
The locking by 8 is easily performed by manually pushing the fixed mold portion 13 into the fitting groove 3 and fitting it.

Further, the flexible mold portion 16 is formed in the circumferential groove 2.
2 are provided side by side in the longitudinal direction to provide flexibility, and a fitting portion 24 having a fitting groove 23 for the cowl side panel 15 (FIG. 2) is integrally provided at the end. From the fitting portion 24, a cowl connection connector 25 for a cowl-side connector (not shown) is connected to the wire harness 12.
Is derived by The fitting portion 24 eliminates the need for the conventional inner member 45 (FIG. 10).

FIGS. 6 and 7 show another embodiment of the flexible molded portion 16, in which a cowl connector 25 'can be connected to the cowl connector 28 fixed to the cowl side panel 15'. This is a structure that is held at the tip of the flexible mold portion 16 '.

That is, a connector accommodating portion (fitting portion) having a fitting groove 30 for fitting to the flange portion 29 of the cowl connecting connector 25 'and a seal lip portion 31 for the cowl side panel 15' at the tip of the flexible molded portion 16 '. Combined accommodation
32 ) , and the slack portion 12a of the wire harness 12 'can be accommodated in the bottom space 32a of the connector accommodating portion 32, so that the connector 25' is accommodated and the cowl side panel 15 'is provided with a sealing function. It is.

[0017]

As described above, according to the invention of claim 1,
For example, a fixed mold portion that fits into the fitting groove of the door panel,
Combined with the flexible mold section on the wire harness exit side
The wiring harness lead-out side
Eliminates the need to assemble the met, and gross the door panel
The workability of assembling the kit is improved. Assembling grommet
Sometimes the L-shaped fixed mold part is the inner peripheral surface of the L-shaped fitting groove.
Because it adheres to the entire surface, the waterproofness in the fitting groove is improved.
You. Grommets are connected to the wire harness inside.
Because it is in close contact, the waterproofness inside the grommet improves,
Do not worry about water entering the door along the wire harness,
Water seeps into door if grommet is cracked
Worries are eliminated. Further, according to the invention of claim 2,
If the height of the abutment part of the grommet is
Fixed because it is set larger than the gap between the section and the step
The molded part is compressed between the retaining
It really adheres and the waterproofness is improved. Further, according to claim 3
According to the plan, the locking clip makes the grommet easy
Not only can it be fixed, but also the length of the neck of the locking clip
Is between the bottom wall outer surface of the fitting groove and the bottom wall surface of the fixed mold part.
The locking clip is shorter than the
When the fixed mold is engaged with the
The grommet secures and adheres tightly (waterproof).
Step. As a result, conventional trim covers and bolts
No pressing means is required. The invention according to claim 4
According to the connector on the cowl side panel side connector
By connecting to the
Waterproof in close contact with the cowl side panel, fits and accommodates
The work of fitting and fixing the part to the cowl side panel is unnecessary.
You.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a grommet assembly structure according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing a fitting groove formed in a vehicle door panel.

FIG. 4 is a perspective view showing a wire harness integrated grommet.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

FIG. 6 is a longitudinal sectional view showing another embodiment of the flexible mold portion of the grommet.

FIG. 7 is a longitudinal sectional view showing a state where the connector is joined to the cowl side panel.

FIG. 8 is an exploded perspective view showing a conventional grommet assembling structure.

FIG. 9 is an exploded perspective view corresponding to an arrow C in FIG. 8;

FIG. 10 is a sectional view taken along line DD of FIG. 8 showing the grommet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door panel 2 Wire harness integral grommet 3 Fitting groove 9 Engagement hole 12 Wire harness 13 Fixed mold part 16, 16 'Flexible mold part 18 Locking clip

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Koji Umegaki 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Co., Ltd. (72) Hiroshi Suzuki 206-1 Nunobikihara, Harihara-cho, Haibara-gun, Shizuoka Yazaki Parts Stock In-house (56) References JP-A 62-54849 (JP, U) JP-A 59-30624 (JP, U) JP-A 62-51915 (JP, U)

Claims (4)

(57) [Scope of request for utility model registration] 1. An L-shape formed at an end of a vehicle door panel.
Grommet with wire harness inserted into fitting groove of
In the assembled structure of the mating grommet,
Using an elastic material as a material, an L-shaped solid pressed into the fitting groove.
A fixed mold part, formed integrally with the fixed mold part,
The wire harness leading side that protrudes outside from the fitting groove
And a grommet inside.
The grommet assembly structure characterized in that the grommet is in close contact with the wire harness without any gap . 2. A receiving portion for retaining is provided at an opening edge of the fitting groove.
A step is provided on the bottom side of the fitting groove.
The fixed mold portion includes the receiving portion for retaining and the step portion.
A contact part to be press-fitted is formed between
Is set to be larger than the distance between the stopper receiving portion and the step portion.
The grommet set according to claim 1, wherein the grommet is provided.
Attached structure. 3. A locking screw on a bottom wall surface of the fixed mold portion.
The fitting clip is projected from the bottom wall of the fitting groove.
And an engagement hole for the locking clip, the length of the neck of the locking clip
But the bottom wall outer surface of the fitting groove and the bottom wall surface of the fixed mold portion
3. The distance is set to be shorter than the interval of
Assembling structure of the described grommet. 4. The method according to claim 1 , further comprising:
The fitting housing for the connector of the ear harness is formed.
To the cowl side panel at the tip of the fitting housing.
Wherein a seal lip portion is formed.
The grommet assembling structure according to any one of claims 1 to 3.