JP2000085456A - Grommet and headlight fitting structure using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide headlight fitting structure simplifying assembly work using a grommet. SOLUTION: In structure with a light support bracket and a fender 3 connected by thread-fastening, a grommet 7 provided with a springy tongue piece 10 is mounted on a lateral face 11, placed in the cross direction of a body, of the light support bracket. A boss 13 of a light body 5 is fitted to the grommet 7, and a rib 15 of the light body 5 is made to abut the fender 3. As a result, the position relation between the fender 3 and the light body 5 is constant, and step difference (n) between the fender 3 and the light body 5 is always constant (allowable value). Appearance can therefore be almost the same only by assembling.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION When a headlamp is mounted on a vehicle body, if the headlamp is mounted along a contour at a corner position of the vehicle body, alignment with a fender is one factor for maintaining a good appearance. The present invention relates to a grommet for mounting a headlamp and a headlamp mounting structure using the same in such a structure.

[0002]

2. Description of the Related Art Conventionally, when a headlamp is attached to a front corner of a vehicle so as to be substantially flush with the vehicle body or to make the outer shape smooth, a lens and a housing constituting the outer shape of the headlamp are used. The lens is arranged smoothly on the surface of the vehicle body, the housing is fixed to the lamp support bracket, and the housing is attached so that the edge of the housing follows the periphery of the fender.

As shown in FIG. 9, a lamp support bracket 2 is spot-welded to a lower part of a hood lock member 1 arranged in the width direction of the vehicle body at a front portion of the vehicle body, and the hood lock member 1 and the fender 3 are screwed. A mounting hole 1a is formed on the upper surface of the hood lock member 1, the surface of the lamp support bracket 2 faces the front of the vehicle body, and a through hole 4 and a mounting hole 2a are formed around the through hole 4. A plurality of brackets 6 having holes 6a are provided in the lamp body 5, and each of the holes 6a corresponds to each of the mounting holes 1a and 2a on the vehicle body side, and these mounting holes 1a and 2a are fastened with bolts. Alternatively, it is stopped by an engagement member. Some mounting structures have a configuration in which some of the mounting holes 1a and 2a are used as reference holes, and some have a configuration in which a part is elongated to increase the degree of freedom (see Japanese Utility Model Publication No. 63-35860). is there.

However, when the lamp body 5 is positioned with respect to the three members of the hood lock member 1, the lamp support bracket 2, and the fender 3, the inside of the front surface, the rear side of the upper surface, and the rear side of the side surface of the lamp body 5 (for convenience, three surfaces). become)
Are arranged flush with each other or smoothly, but in particular, since the alignment (positional relationship) with the fender 3 on the rear side is complicated, simple engaging means, that is, the upper center 1 of the housing constituting the headlamp is provided. There has been proposed a structure in which an insertion piece protruding in the front-rear direction of the vehicle body is provided at a place, and the insertion piece is temporarily held so that the installation operation becomes a simple procedure (see JP-A-8-91115).

[0005]

By the way, the front part of an automobile is a place where the appearance is impressively recognized and is also regarded as important in terms of manufacturing. Therefore, the lamp body 5
It is desirable to assemble without generating a noticeable step, shift, distortion or the like on the mating surface of the fender 3 and the fender. However, by screwing the hood lock member 1 and the fender 3 together, it is difficult to obtain dimensional accuracy of the fender 3 with respect to the mounting portion of the lamp body 5, and even if the hole 6a on the lamp body 5 side is made to be a long hole, the mounting is not possible. The lamp body 5 becomes complicated
There is a possibility that a step, a deviation, and a distortion that deviate from the design allowance may occur between the fender 3 and the fender 3. Also, in order to prevent this from happening, the lamp body 5 must be
As a result, the work efficiency is reduced.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a grommet for simplifying the operation of a lamp body to be mounted at a position in contact with three surfaces, and a headlamp mounting structure using the grommet.

[0007]

In order to achieve the above object, the present invention provides a grommet comprising:
It is characterized by including a cylindrical insertion portion fitted into the plate hole and an annular head portion having spring properties.

According to a second aspect of the present invention, there is provided a grommet,
It has a flange-shaped head portion and a cylindrical insertion portion, and forms a back-off prevention piece when fitted into a plate hole on the outer periphery of the cylindrical insertion portion, and is pressed against the surface of the head portion in one axial direction. A tongue piece is provided.

According to a third aspect of the present invention, in the headlamp mounting structure, a boss extending in the vehicle width direction is formed on the lamp body, and a seat surface is formed on a base portion of the boss, so that the lamp support bracket extends in the vehicle width direction. A grommet provided with a springy head that expands and contracts is attached to the hole formed on the hit surface, and the boss is inserted into the grommet so that the head shrinks and is supported by the lamp support bracket,
When the head is returned, the fender side of the lamp body is set to abut on a fender connected to the lamp support bracket.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the tongue protruding obliquely from the grommet head is brought into contact with the seating surface of the lamp body, and the spring body of the tongue moves the lamp body to the outside of the vehicle body. It is characterized by being biased to.

According to a fifth aspect of the present invention, in the third or fourth aspect of the present invention, a positioning rib is provided outside the fender side of the lamp body, and the lamp body is moved through the positioning rib by a spring force of a grommet. It is characterized by being pressed against the fender.

According to a sixth aspect of the present invention, in the third to fifth aspects of the present invention, the mounting hole for fastening the lamp body of the lamp support bracket with a bolt is formed as an elongated hole extending in the vehicle width direction. I do.

The invention of claim 7 is characterized in that, in the invention of claims 3 to 6, the lamp support bracket is welded to the member in the vehicle width direction, and the fender is screwed.

The grommet fitted into the lamp support bracket is disposed so that the axial direction of the inner hole is in the width direction of the vehicle body, and forms a springy tongue on the head of the grommet. The lamp body having the boss inserted through the inner hole of the grommet is pushed to the outside of the vehicle body, and the outer end of the lamp body can be adjusted to a position at which the alignment with the fender becomes a design value by a spring force or by hand. Therefore, the spring shape may be a tongue piece or a coil shape. Further, a plate-shaped bracket is protruded from the lamp main body, and when the lamp main body is located at a predetermined position, the lamp main body is fixed by screwing so that the vertical position on the vehicle body side is determined by the bracket. The lamp body is a combination of a lens and a housing.
The boss and bracket provided integrally may be formed on either the lens or the housing.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, a description will be given of a grommet for temporarily fixing a lamp body in a configuration in which a lens surface of a vehicle headlamp is smoothly installed on a vehicle body. The grommet 7 shown in FIG. 1 is an insertion portion 8 having an inner hole 8a.
And a flange-like head 9 are formed, a taper 8b is formed at the tip of the insertion portion 8 to facilitate insertion of the grommet 7, and a stopper (reverse movement prevention piece) 8c for preventing the grommet 7 from coming off is provided on the outer periphery.
(See FIG. 3). As shown in FIGS. 1 to 3, the stopper 8 c is surrounded by a U-shaped groove and has resiliency, and an inserted plate (lamp support bracket 2) is provided in a gap between the rear end of the stopper 8 c and the head 9. It will be sandwiched.

As shown in FIGS. 1 and 4, a pair of tongue pieces 10 are provided symmetrically on the head 9 of the grommet 7, and the tips of the tongue pieces 10 slightly curved toward the head side project obliquely upward in the air. ing. A part of the tongue piece 10 located on the extension of the inner hole 8a is cut out in an arc shape, and the tongue piece 10 has elasticity in the axial direction of the inner hole 8a. Also, a relief groove 9a is provided in the head 9 so that the head surface becomes flat when the tongue piece 10 is pressed against the head 9. Note that a taper 9b is also formed on the head 9 side of the inner hole 8a.

Next, the lamp body 5 and the vehicle body to which the lamp body 5 is attached will be described. As shown in FIGS. 6 and 7, a lamp support bracket 2 is welded to a lower portion of a hood lock member 1 extending in the vehicle body width direction, and one side of the lamp support bracket 2 is bent so as to face the vehicle body width direction. The hole 11a for mounting the grommet 7 on the side surface 11 is
Are provided side by side. A hole 12a into which the lamp body 5 enters is formed in the front surface 12 of the lamp support bracket 2, and a fixing hole 12b is formed in the side. Also,
The hood lock member 1 also has a mounting hole 1a.
In this structure, the fender 3 is screwed to the hood lock member 1.

As shown in FIG. 6, the lamp body 5 has a housing 5a and a lens 5b integrally assembled, and two bosses 13 are provided on the side of the lamp support bracket 2 in the vertical direction. The base on which the boss 13 is mounted has a flat seating surface 14 for receiving the tongue 10 formed on the grommet 7. In addition, plate-shaped brackets 6 are provided on the upper and lower sides of the lamp body 5 on the fender side,
It extends backward and downward. Also, bracket 6
Has a long hole 6a in the vehicle width direction.

The boss 13 of the lamp body 5 is fitted in the insertion portion 8 in a hollow shape as shown in FIG. 8A, and comes into pressure contact with the inner hole 8a of the grommet 7 due to radial elasticity.
As shown in FIG. 8B, a positioning rib 15 is formed on the housing 5a on the fender side of the lamp body 5.

Next, a procedure for assembling the lamp body 5 will be described. First, as shown in FIG. 7, the grommet 7 is attached to the hole 11a of the lateral surface 11 of the lamp support bracket 2. Then, the boss 13 of the lamp body 5 is inserted and held in the inner hole 8a formed in the grommet 7. In this state, the lamp body 5 is pressed against the fender 3 by the spring force of the tongue piece 10. At this time, the rib 15 of the lamp body 5
As a result, the distance n between the fender 3 and the lamp body 5 becomes constant, so that the step size is restricted, and the outer end position of the lamp body 5 falls within the design tolerance of the step size.
When the lamp body 5 is positioned in the vertical direction on the vehicle body side, the slot 6a of the bracket 6 is aligned with the mounting holes 1a and 12b, and the lamp body 5 is fixed by screwing. The value of the interval n may be zero or a certain value.

As described above, when the lamp body 5 is temporarily fixed, the lamp body 5 can move in the vehicle width direction, and the rib 15 of the lamp body 5 abuts on the fender 3 to reduce the dimensional accuracy with respect to the fender 3. Instead, a constant state can be maintained, and at this time, rattling can be prevented by the spring property of the grommet 7. Even when the lamp body 5 is screwed to the lamp support bracket 2 and the hood lock member 1 without the operator's awareness when performing the assembling work on the line, the rib 15 is formed by the fender due to the spring property of the grommet 7. 3 side, the lamp body 5
Steps and variations deviating from the design values of the fender and the fender 3 can be absorbed, and stable supply of the product shape can be achieved.

[0022]

From the above description, according to the first aspect of the present invention,
Since the grommet has spring property, when the mounting part is inserted through the grommet fitted in the plate hole, the mounting part can be temporarily fixed by the spring property of the grommet by regulating the mounting part in the axial direction. And workability can be improved. According to the second aspect of the present invention, the grommet is securely fitted into the plate hole by the reverse movement preventing piece, and the component to be attached to the grommet is pressed in the axial direction by the tongue piece provided on the head portion.
The movement in the axial direction is performed smoothly.

According to the third aspect of the present invention, in the mounting structure in which the grommet is mounted on the lamp support bracket and the lamp body is mounted toward the front part of the vehicle body via the grommet, the lamp body is held by being mounted on the grommet. The lamp body can be moved between the fender and the fender, and the spring body of the grommet allows the lamp body to be pressed against the fender and temporarily fixed. Further, since the seating surface of the lamp body is pressed in the axial direction of the boss, the lamp body can be moved smoothly and the workability is good. In this way, by assembling the lamp body with respect to the contact surface with the fender while securing the degree of freedom in the body width direction of the lamp body, the positional relationship between the lamp body and the fender becomes constant, and the worker is conscious. Without this, it is possible to produce an automobile equipped with a headlamp having a constant step with the fender. In addition, the grommet allows temporary holding, reducing the number of tightening points and reducing the number of assembly steps,
Workability is improved.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the lamp body is moved in the axial direction of the boss by pressing the seating surface of the lamp body with the tongue piece of the grommet, so that friction is reduced and work is performed. It can be smooth. According to a fifth aspect of the present invention, in the third or fourth aspect of the present invention, the rib of the lamp body abuts on the fender, so that dimensional accuracy is secured by the rigidity of the rib, and the lamp body is positioned at a fixed position with respect to the fender. It can be arranged reliably.
In the invention of claim 6, in any of the inventions of claims 3 to 5, when the lamp main body is temporarily fixed, the positioning can be easily performed because the mounting hole to be fastened by the bolt is a long hole. According to the seventh aspect of the present invention, in any one of the third to sixth aspects of the present invention, the lamp support bracket and the fender are screw-tightened, so that dimensional accuracy cannot be obtained, but the lamp body has a contact surface with the fender. As a reference, the step with the fender can be kept within the allowable range of the design value, and variations can be absorbed.

[Brief description of the drawings]

FIG. 1 is a side view of a grommet according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the grommet of FIG. 1 taken along the line AA in FIG.

FIG. 3 is a sectional view of the grommet in FIG. 1 taken along the line BB in FIG. 4;

FIG. 4 is a top view of the grommet of FIG.

FIG. 5 is a bottom view of the grommet of FIG. 1;

FIG. 6 is a development view showing a mounting structure of the lamp body using the grommet of FIG. 1;

FIG. 7 is a development view showing a grommet mounting portion of the mounting structure of FIG. 6;

8A and 8B are schematic views for explaining a state in which the lamp body having the mounting structure of FIG. 6 is mounted, with reference to (a) a grommet side and (b) a flat section on a fender side.

FIG. 9 is a development view showing a conventional lamp body mounting structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hood lock member 1a Mounting hole 2 Lamp support bracket 3 Fender 5 Lamp body 7 Grommet 8 Insertion part 8c Reverse movement prevention piece 9 Head part 10 Tongue piece 11a Hole 12b Mounting hole 13 Boss 14 Seat surface 15 Rib

Claims (7)

[Claims] 1. A grommet comprising: a tubular insertion portion fitted into a plate hole; and a ring-shaped head portion having spring properties. 2. A head having a flange-like head portion and a cylindrical insertion portion, a back-stopping piece when fitted into a plate hole is formed on an outer periphery of the cylindrical insertion portion, and one surface is provided on a surface of the head portion. A grommet characterized by having two tongue pieces that can be pressed in the axial direction. 3. A boss extending in the width direction of the vehicle body is formed in the lamp body, and a seating surface is formed at a base of the boss. A spring that expands and contracts in a hole formed in the surface of the lamp support bracket facing the width direction of the vehicle body. A grommet equipped with a flexible head is mounted, the boss is inserted into the grommet so that the head contracts, and the boss is supported on the lamp support bracket. When the head returns, the fender side of the lamp body is connected to the lamp support bracket. A headlamp mounting structure characterized in that the headlamp mounting structure is set so as to come into contact with the fender provided. 4. A tongue protruding obliquely from a grommet head is brought into contact with a seating surface of a lamp body, and the lamp body is urged to the outside of the vehicle body by a spring force of the tongue. The headlamp mounting structure according to claim 3. 5. A positioning rib is provided outside the fender side of the lamp body, and the lamp body is pressed against the fender via the positioning rib by a spring force of a grommet. The headlamp mounting structure according to claim 4. 6. The headlamp according to claim 3, wherein the mounting hole for fastening the lamp body of the lamp support bracket with a bolt is formed as an elongated hole along the vehicle width direction. Mounting structure. 7. The headlamp mounting structure according to claim 3, wherein the lamp support bracket is welded to the member in the vehicle width direction, and the fender is screwed. .