JPH09240390A - Fixing structure for wire harness in vehicle door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a glomet fixing structure for a wire harness of an automobile door. SOLUTION: A wire harness insertion opening 1c is recessed and formed from a side plate 1a to an inner plate 1b of a door frame 1. In turn, glomets 8A to 8C made of rubber or elastomer fitted to the opening 1c are provided, engaging sections comprised of either concave or convex portion formed at peripheral edges or outer surfaces of the glomets 8A to 8C are engaged with engaged portions comprised of either one of the convex or concave portion formed at the peripheral edge or the inner surface of the opening 1c of the door frame 1, and the glomets 8A to 8C are fixed to prevent their motion in forward or rearward direction and width direction against the opening 1c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a wire harness for an automobile door, and more particularly to an improved structure of a grommet mounting portion which is mounted on a portion where the door wire harness is inserted through a door frame.

[0002]

2. Description of the Related Art Conventionally, as a mounting structure of a wire harness installed in a door of an automobile, as shown in FIGS. 7A and 7B, a side plate portion 1a of a door frame 1 to an inner plate portion 1b.
The opening 1c for inserting the wire harness is cut out to form the L-shaped fitting 2 fitted in the opening 1c.
And the wire harness W / H is provided in the through hole 2a of the fixture 2.
After fitting the grommet 3 of, cover the waterproof cover 4,
There is one in which the fixture 2 is fixed to the side plate portion 1a of the door frame 1 with screws 5 and 5. (Actual fairness 2-46438
Reference numeral 6 is a weather strip of the door frame 1.

In the above conventional structure, the wire harness W /
There is an advantage that H can be easily fixed to the door frame 1 while being taken out from the inside of the door frame 1 to the outside.

[0004]

However, while many components such as the fixture 2, the grommet 3, the waterproof cover 4 and the screw 5 are required, screwing work is required and the screw portion is waterproof. Therefore, there is a problem that rainwater or the like may enter from the side plate portion 1a.

The present invention has been made to solve the above problems, and provides a wire harness mounting structure for an automobile door, which simplifies the mounting work, reduces the number of parts, and improves waterproofness. This is an issue.

[0006]

In order to solve the above problems, according to claim 1 of the present invention, an opening for inserting a wire harness is formed by notching from a side plate portion of a door frame to an inner plate portion, and the opening is formed. Provided with a grommet made of rubber or an elastomer having a shape to be fitted to, the engaged portion formed by either one of the convex portion and the concave portion formed on the inner peripheral surface of the opening of the door frame, and the outer surface of the grommet. There is provided a mounting structure for an automobile door wire harness, characterized in that a grommet is fixed to the opening by locking a locking portion composed of the other one of the formed concave portion and convex portion.

According to the first aspect of the present invention, the rubber or elastomer grommet is formed into a shape that fits into the opening of the door frame, and the elasticity of the grommet is utilized.
By locking the locking portion of the grommet to the locked portion of the opening of the door frame, the grommet can be fixed to the opening with one touch. Therefore, conventional fixtures,
Since parts such as a waterproof cover and screws are not required at all, the number of parts can be greatly reduced, and screwing work is not required, so installation work can be simplified, and since there is no screw part, waterproofness is also improved. .

[0008] The inner peripheral surface of the opening of the side plate portion of the door frame may be provided with a line-shaped groove in a direction orthogonal to the side plate part, and the grommet may be provided with a line-shaped convex portion closely fitted to the groove. preferable. (Claim 2)

According to this structure, the grommet and the door frame are fitted in the convex portion and the concave portion along the peripheral edge of the opening, and the groove and the convex portion are fitted in the direction orthogonal to each other. By moving in any direction, the grommet can be securely and easily fixed to the door frame.

The locked portion provided in the opening of the side plate portion of the door frame is a convex portion protruding in a wedge shape from both upper and lower surfaces, while the grommet is a flat plate shape fitted into the opening of the side plate portion. It is also preferable that a base portion is provided, and a groove that fits into the opening edge of the side plate portion is provided on the upper and lower end surfaces of the base portion, and the wedge-shaped convex portion is made to bite into the groove and fixed by pressure. (Claim 3) With this configuration, since the wedge-shaped convex portions provided on the door frame bite into the groove of the grommet from both upper and lower sides, the grommet can be immovably fixed.

It is preferable that two grooves are provided in parallel in the vertical direction on the outer surface of the grommet fitted in the opening of the side plate portion of the door frame in parallel with each other with a constant interval, and a weather strip tight fitting portion is provided. (Claim 4) With this configuration, the weather strip attached to the door frame is
It can be easily attached via the grommet without the need for attachment parts.

The grommet includes a wire harness insertion tube portion projecting outward from a portion fitted to the side plate portion, and a vehicle body frame locking portion at its tip, and the wire harness inserted into the grommet from the inside of the door. It is arranged to be routed to the body frame side through the wire harness insertion tube portion. (Claim 5) With this configuration, the wire harness arranged between the door and the vehicle body frame can be completely protected by the grommet, and the waterproof performance is enhanced.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 3 show the fixing structure of the grommet 8A of the first embodiment. As shown in FIG. 1 (B), an opening 1c for inserting a wire harness is provided between a side plate portion 1a and an inner plate portion 1b of a door frame 1 of an automobile door.
Is cut out in an L shape. The tip of the opening 1c of the side plate portion 1a is formed in a semicircular shape, and the rear end of the opening 1c of the inner plate portion 1b communicates with the working notch 1d of the inner plate portion 1b. In addition, a work notch 1e is also formed in the inner plate portion 1d.

The grommet 8A shown in FIGS. 2 and 3 is made of rubber or elastomer and has an opening 1 in the side plate portion 1a.
It is provided with an L-shaped base portion 8a that fits into the opening 1c of the inner plate portion 1b. On the front surface of the side plate base portion 8b fitted into the opening 1c of the side plate portion 1a of the base portion 8a, a wire harness insertion tube portion 8d protruding forward (outward) and a vehicle body frame locking portion 8e are provided at the tip thereof. The wire harness W / H which is integrally formed and is inserted into the grommet 8A from the inside of the door frame 1 is connected to the wire harness insertion tube portion 8
It is arranged to be routed to the vehicle body frame side through d and the vehicle body frame locking portion 8e. A connector 9 is attached to the tip of the wire harness W / H.

On the outer peripheral edge of the side plate base portion 8b of the base portion 8a, there is formed a recessed portion including a groove 8f which is fitted into the inner peripheral edge of the opening 1c of the side plate portion 1a by being inserted in the width direction, and the inner plate is formed. The outer peripheral edge of the inner plate base portion 8c that fits into the opening 1c of the portion 1b is fitted into the inner peripheral edge of the opening 1c of the inner plate portion 1b by forcibly pushing from the width direction.
A concave portion composed of g is formed.

The wire harness W / H using the grommet 8A is attached to the wire harness W / H in the door frame 1 before being fixed to the opening 1c of the door frame 1.
Through the wire harness insertion tube portion 8d of the grommet 8A and the vehicle body frame locking portion 8e. Then, while inserting the groove 8f of the side plate base portion 8b of the grommet 8A into the inner peripheral edge of the opening 1c of the side plate portion 1a from the width direction,
The groove 8g of the inner plate base portion 8e is forcibly pushed in the inner peripheral edge of the opening 1c of the inner plate portion 1b from the width direction and is flexibly fitted into the groove.

As a result, the groove 8f of the side plate base portion 8b is fitted into the inner peripheral edge of the opening 1c of the side plate portion 1a, so that the grommet 8A is fixed so as not to move in the front-rear direction and the opening of the inner plate portion 1b is formed. The inner plate base portion 8 is provided on the inner peripheral edge of 1c.
Since the groove 8g of c is fitted, the grommet 8A is fixed so as not to move in the width direction.

As described above, by simply fitting the grommet 8A into the opening 1c of the door frame 1, the grommet 8A can be fixed to the opening 1c with one touch. further,
Since conventional parts such as fixtures are not required at all, screwing work is not necessary, and since there is no screw portion, the number of parts can be reduced, the mounting work can be simplified, and the waterproof property can be improved. In addition, in the grommet 8A, the door frame 1
The weather strip 6 is attached along the front surface of the side plate base portion 8b.

FIG. 4 shows a fixing structure of the grommet 8B of the second embodiment. Basically, the inner plate base portion 8c of the grommet 8A of the first embodiment is unnecessary, and the flat plate-shaped base portion 8a is used. The wire harness insertion tube portion 8d and the vehicle body frame locking portion 8e are integrally formed on the front surface of the base portion 8a. In the second embodiment, wedge-shaped convex portions 1f are formed on both sides of the inner peripheral edge of the opening 1c of the side plate portion 1a of the door frame 1.

In the second embodiment described above, the groove 8f of the side plate base portion 8b, which is the base portion 8a of the grommet 8B, is inserted from the width direction into the inner peripheral edge of the opening 1c of the side plate portion 1a and fitted therein. By this fitting, the wedge-shaped convex portions 1 provided above and below the inner peripheral edge of the opening 1c on the bottom surface of the groove 8f of the side plate base portion 8b.
f bites from the vertical direction. In this way, the grommet 8B is fixed so as not to move in the front-rear direction by simply fitting the groove 8f of the side plate base portion 8b into the inner peripheral edge of the opening 1c of the side plate portion 1a, and the opening 1c of the inner plate portion 1b is fixed. Since the convex portion 1f at the inner peripheral edge of the bite bites into the groove 8f of the inner plate base portion 8a, the grommet 8B is fixed so as not to move in the width direction.

5 and 6 show the fixing structure of the grommet 8C of the third embodiment. As shown in FIG. 6, an opening 1c cut out between the side plate portion 1a and the inner plate portion 1b of the door frame 1 is formed with an inner surface 1h protruding toward the inside of the door by press molding. On the other hand, as shown in FIG. 5, the grommet 8C includes a box-shaped base portion 8i fitted to the inner surface of the opening 1c.

On the front surface of the side plate base portion 8b of the base portion 8i, similar to the grommet 8A of the first embodiment, the wire harness insertion tube portion 8d and the vehicle body frame locking portion 8e are integrally formed, while the vertical direction 2 extending in the vertical direction and parallel to the width direction are formed with two grooves 8j so that the leg portions 6a, 6a of the weather strip 6 can be tightly fitted in these grooves 8j.

At the front portion (outside) of the inverted U-shaped box base portion 8k which covers the space between the side plate base portion 8b of the base portion 8i and the inner plate base portion 8c, the inner circumference of the opening 1c is formed. A convex portion 8m tightly fitted in the groove 1m provided on the surface is provided. Also, at the rear end (inner end) of the box base portion 8k,
The flange portion 8n is formed. In addition, front and rear ridges 8p are formed on both outer side surfaces of the box base portion 8k.

The groove 1m is formed on the inner surface 1h of the opening 1c.
And the ridge 8p of the box base 8k.
To form a recessed strip 1i in the front-rear direction.

In the third embodiment, the box base portion 8k of the base portion 8i of the grommet 8C is inserted into the inner surface 1h of the opening 1c of the door frame 1 from the width direction. At the time of this insertion, first, the concave ridge 1i is pushed into the convex ridge 8p while being fitted, then the front convex portion 8m is fitted into the groove 1m, and the rear end flange portion 8n is the inner end of the inner surface 1h. Lock on. In this way, the convex portion 8m and the groove 1m are fitted along the inner surface 1h, and the convex strip 8p and the concave strip 1i are fitted in the direction orthogonal to the side plate portion, so that the grommet 8C becomes the inner surface of the door frame 1. It is fixed immovably in the front-back and left-right directions at 1h.

With the above fixing structure, in addition to the effect of the grommet 8A of the first embodiment, since the entire outer surface of the box base portion 8k is in close contact with the inner surface 1h of the opening 1c, the waterproof property is further improved.

The side plate base portion 8b of the base portion 8i
Since the groove 8j for tightly fitting the leg portion 6a of the weather strip 6 is integrally formed with the weather strip 6,
Since the mounting parts etc. are unnecessary, the grommet 8C can be easily fitted tightly.

[0028]

As is apparent from the above description, according to the first aspect of the present invention, the locking portion of the grommet is locked to the locked portion of the opening of the door frame by utilizing the elasticity of the grommet. This allows the grommet to be fixed to the opening with one touch. Therefore, parts such as fixtures, waterproof covers and screws, which have been required in the past, are no longer required, and the number of parts can be significantly reduced, and screwing work is not required, so installation work can be simplified and the screw part Since it is not present, waterproofing is also improved.

In the second aspect, the grommet and the door frame are fitted in the convex portion and the concave portion along the peripheral edge of the opening, and the groove and the convex portion are fitted in the direction orthogonal to each other. By moving in any direction, the grommet can be securely and easily fixed to the door frame.

In the third aspect, since the wedge-shaped convex portions provided on the door frame bite into the groove of the grommet from the upper and lower sides, only by forming the wedge-shaped convex portions on the door frame side,
The grommet can be easily fixed so that it cannot be moved.

According to the present invention, the weather strip to be attached to the door frame is not required to have attachment parts or the like,
It can be easily attached by fitting it tightly on the grommet.

According to the fifth aspect, the wire harness arranged between the door and the vehicle body frame can be completely protected by the grommet, and the waterproof performance can be improved.

[Brief description of drawings]

FIG. 1 is a grommet fixing structure according to a first embodiment of the present invention, (A) is a perspective view of a door frame to which a grommet is fixed, and (B) is an exploded perspective view of a door frame before the grommet is fixed. is there.

FIG. 2 is a perspective view of a grommet.

FIG. 3A is an enlarged cross-sectional view taken along the line AA of FIG.
(B) is a sectional view taken along line BB.

FIG. 4 is a grommet fixing structure of the second embodiment, (A) is an exploded perspective view of the grommet and the door frame,
(B) is a rear view of the grommet fixed to the door frame.

FIG. 5 is a grommet fixing structure according to the third embodiment, (A) is a perspective view of a door frame to which a grommet is fixed, and (B) is a sectional view taken along line CC of (A).

6A is an exploded perspective view of a grommet and a door frame, and FIG. 6B is a rear perspective view of the grommet.

FIG. 7 is a conventional grommet fixing structure, (A)
Is a perspective view of the door frame with the grommet fixed, (B)
[Fig. 3] is a perspective view of a fixture and the like.

[Explanation of symbols]

 1 door frame 1a side plate part 1b inner plate part 1c opening 1f wedge-shaped convex part 1h inner surface 1i concave line 6 weather strip 6a leg part 8A to 8C grommet 8a base part 8b side plate base part 8c inner plate base part 8d wire harness insertion tube Part 8e Body frame engaging part 8g, 8f Groove 8i Base part 8j Groove 8k Box base part 8m, 8n Flange part 8p Convex strip W / H Wire harness

Claims (5)

[Claims] 1. A door frame is provided with a grommet made of rubber or elastomer, which is formed by notching an opening for inserting a wire harness from a side plate portion of a door frame to an inner plate portion, and is formed in the door frame. The locked portion formed of either the convex portion or the concave portion formed on the inner peripheral surface of the opening is locked with the locking portion formed of the other of the concave portion or the convex portion formed on the outer surface of the grommet. A mounting structure for a wire harness for an automobile door, wherein a grommet is fixed to the opening. 2. A line-shaped groove in a direction orthogonal to the side plate portion is provided on the inner peripheral surface of the opening of the side plate portion of the door frame, and a line-shaped convex portion tightly fitted in the groove is provided on the grommet. The attachment structure for a wire harness for an automobile door according to claim 1. 3. The locked portion provided in the opening of the side plate portion of the door frame is a convex portion protruding in a wedge shape from both upper and lower surfaces, while the grommet is a flat plate fitted in the opening of the side plate portion. A base portion having a shape is provided, and a groove that fits into an opening edge of the side plate portion is provided at upper and lower end surfaces of the base portion, and the wedge-shaped convex portion is bited into the groove to fix the base member by pressure. 1. A wire harness attachment structure for an automobile door according to 1. 4. The weather strip tight fitting portion is provided on the outer surface of the grommet fitted in the opening of the side plate portion of the door frame in parallel with two vertical grooves at regular intervals. An attachment structure for a wire harness for an automobile door according to any one of claims 1 to 3. 5. The grommet includes: a wire harness insertion tube portion protruding outward from a portion fitted to the side plate portion;
The vehicle body frame locking portion is provided at the tip thereof, and the wire harness that is inserted into the grommet from the inside of the door is routed to the vehicle body frame side through the wire harness insertion tube portion. Item 2. A wire harness attachment structure for an automobile door according to the item.