JP3237167B2 - How to attach the end of the vehicle bumper to the vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting a vehicle bumper end on a vehicle body.

[0002]

2. Description of the Related Art Conventionally, a front bumper having a substantially U-shape in a plan view from the front to the side of a vehicle body is provided with a cover which is bent inward at an upper edge of a front bumper 1 as shown in FIGS. It has a mounting portion 1a and a bolt insertion hole 1b drilled at an end of the mounted portion 1a.

On the other hand, a mounting portion 2a bent inward is formed at the front lower edge of the front fender panel 2 so as to face the mounting portion 1a of the bumper 1. The mounting portion 2a is provided with a fixture insertion hole 2b for inserting the fixture 3 above the bolt insertion hole 1b formed in the front bumper 1. Also, the edge 1c of the front bumper 1 and the front fender panel 2
And an edge portion 2c is continuous in an arch shape.

In the fixture 3, a head 3a and a flange 3b formed integrally with a lower end of the head 3a are integrally formed of an elastic resin or the like. The fixture 3 is supported by the front bumper 1 via the elastic seal member 4.

[0005] Double-sided tapes 4a, 4a are attached to the upper and lower surfaces of the elastic seal member 4, and the double-sided tape 4a on the lower surface of the elastic seal member 4 is attached to the mounting portion 1a of the front bumper 1.
And a double-sided tape 4 a on the upper surface of the elastic seal member 4.
Are attached to the flange 3b of the fixture 3 and the mounting portion 2a of the front fender panel 2. Further, a bolt insertion hole 4b is formed in the elastic seal member 4 in the same manner as the bolt insertion hole 1b of the front bumper 1. The bolt insertion hole 4b also serves as a positioning when the elastic seal member 4 is attached to the front bumper 1.

[0006] The front bumper 1 thus configured
In this state, the fixture 3 and the elastic seal member 4 are fixed with the screw 5 so as to be located between the mounting portion 1a formed on the front bumper 1 and the mounting portion 2a formed on the front fender panel 2, and in this state. The head 3a of the fixture 3 is inserted into the fixture insertion hole 2b of the front fender panel 2 for positioning, and the double-sided tape 4a attached to the upper surface of the elastic seal member 4 is attached to the mounting portion 2a of the front fender panel 2. The front bumper 1 was temporarily held by being attached.

[0007]

In the above-described method of mounting the end of the vehicle bumper on the vehicle body, the elastic seal member 4 is attached with the double-sided tapes 4a, 4a.
Positioning with respect to the front bumper 1 was troublesome and required skill.

As shown in FIGS. 9 (A) and 9 (B), when the elastic seal member 4 is attached to the front bumper 1 in a state of being shifted in the front-rear direction or in the left-right direction, the front bumper There is a deviation in the positioning of 1,
There has been a problem that the attachment area of the double-sided tapes 4a, 4a to the front bumper 1 and the front fender panel 2 is reduced.

Further, when the elastic seal member 4 is mounted to be shifted forward of the vehicle body as shown in FIG. 9A, the front bumper 1 and the front fender panel 2 are mounted.
9 is impaired, and the elastic seal member 4 is
As shown in (B), when it is mounted to be shifted to the rear of the vehicle body or the like, problems such as unsightly appearance occur.

The present invention has been made in view of the above circumstances, and has a simple structure, can easily attach a bumper to a vehicle body, and ensures airtightness between the bumper and the vehicle body. It is an object of the present invention to provide a method of mounting a vehicle body at an end portion of a vehicle bumper, which can reduce the cost of parts and the number of mounting steps.

[0011]

According to the present invention, in order to achieve the above object, a mounting hole is formed in a mounting portion formed on a lower edge of a fender panel of a vehicle body, and a cover corresponding to the mounting portion is provided. A mounting hole that opens in the mounting portion corresponding to the mounting portion and the mounting hole is provided in a bumper having a substantially U-shaped planar shape, and a flange is provided in an intermediate portion and
A shaft-shaped fixture having a deformable sealing elastic lip provided on the peripheral end surface of the flange is prepared, and the both ends of the fixture are fitted into the two mounting holes, respectively, with the bumper and When tightening the fender panel using the fixing tool, the flange of the fixing tool is moved forward.
The gist is that the elastic lip is located between the two mounting portions and the elastic lip is crushed between the two mounting portions to seal between the two mounting portions.

[0012]

The end of the bumper is attached to the end of the bumper by the elastic lip provided on the flange integrally formed with the fixture for fixing the bumper to the fender panel while attaching the end of the bumper to the fender panel. The gap with the edge of the continuous fender panel is closed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a method of attaching a vehicle bumper end to a vehicle body according to the present invention will be described with reference to FIGS.

[0014] 1 (A) is an enlarged sectional view of the main part of the present invention,
1B is a cross-sectional view of the fixture, FIG . 2 is an exploded perspective view of a main part, FIG. 3 is a perspective view of a vehicle, and FIG. 4 is a cross-sectional view of a main part showing another example of the elastic lip.

In FIG. 3, a front bumper 12 is attached to a front portion of the vehicle body 10 so as to extend from the surface of the front grill 11 to the front of the vehicle body and straddle the front grill 11 and the front fender panel 13.

The front bumper 12 is a resin integrally molded product having a substantially U-shape in plan view from the front to the side of the vehicle body 10. In addition, front bumper 12
At the upper edge, as shown in FIG. 2, an attached portion 12a bent inward is formed. Further, a bolt insertion hole 12b is formed at an end of the attached portion 12a.

At the lower front edge of the front fender panel 13, a mounting portion 13a bent inward is formed so as to face the mounting portion 12a of the front bumper 12. The fixture 1 is located in the mounting portion 13a above the bolt insertion hole 12b formed in the front bumper 12.
4 is provided with a fixture engagement hole 13b. In addition, the edge 12c of the front bumper 12 and the edge 13c of the front fender panel 13 are continuous in an arch shape.

As shown in FIG. 1, the fixing member 14 is
4a and a flange 14d for separating the shaft portion 14a into an upper portion 14b and a lower portion 14c are integrally formed of an elastic resin or the like.

Upper part 14b of shaft part 14a and flange 14d
An engagement groove 14e that engages with the fixture engagement hole 13b of the front fender panel 13 is formed in a portion that is continuous with the upper surface of the front fender panel 13.
Are formed. The upper portion 14b is formed in a conical shape such that its diameter decreases toward the upper end.

The lower portion 14c of the shaft portion 14a is formed with a screw hole 14f opened at the end face. In addition, this lower part 14
c has its maximum diameter set to be substantially the same as the diameter of the bolt insertion hole 12b so as to fit into the bolt insertion hole 12b of the front bumper 12.

The flange 14d is formed so as to be located between the front bumper 12 and the front fender panel 13, and has a circumferential end face as shown in FIG.
The front bumper 1 is formed by the thickness of the flange 14d.
Top of the flange 14d to embed the gap between the edge 13c of the second edge portion 12c and the front fender panel 13
The elastic lip portion 14 in which the total thickness T2 is larger than the large thickness T1
g is formed.

Incidentally, the elastic lip portion 14g is not limited to the shape shown in FIG .
Has the relationship of maximum thickness T1 <total thickness T2 and is deformable
As long as it is capable of functioning, for example, the configuration shown in FIGS. 4 to 6 is also possible. 4 to 6, the same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The elastic lip portion 24g shown in FIG. 4 is configured so that the peripheral end surface of the flange 24d is cracked, and each tip portion is bent in a direction away from each other to maintain airtightness. .

The elastic bead 34g as an elastic lip portion shown in FIG. 5A is formed of rubber or the like having a substantially perfect circular cross section on the peripheral end surface of the flange 34d. Front fender panel 13
The airtightness is maintained by being forcibly crushed in accordance with the compressive force.

At this time, as shown in FIG. 5B, the points P, at which the elastic bead 34g comes into contact with both the end of the front bumper 12 and the end of the front fender panel 13 from the base end of the flange 34d. Molding dimensions L, L 'up to P'
(Including L = L ') means dimensional variation due to the processing of the flange 34d, dimensional variation from the bolt insertion hole 12b to the outer surface of the front bumper 12, and the fixture engagement hole 13b.
In consideration of the dimensional variation from the front surface to the outer surface of the front fender panel 13 and the dimensional variation of the front bumper 12 and the curved surface at each end of the front fender panel 13, it is assembled to the front bumper 12, the front fender panel 13 and the fixture 14. At this time, the length of the elastic bead 34g is set to be such that the elastic bead 34g is elastically contacted with the points P and P 'located within the curved surfaces of the end of the front bumper 12 and the end of the front fender panel 13.

As a result, even when the above-mentioned variation occurs, the elastic ball follows the change in the gap dimension due to the curved surface in the expanding direction between the end of the front bumper 12 and the end of the front fender panel 13. The edge 34g is crushed,
The elastic bead 34g can be kept in a state of being caught on both the end of the front bumper 12 and the end of the front fender panel 13 at all times.
And the side surfaces of the front fender panel 13 substantially coincide with each other, so that the appearance can be improved and the adhesion can be secured.

Further, the elastic bead 44g as the elastic lip shown in FIG. 6A is formed integrally with the flange 44d so as to have a hollow portion 44g 'at the peripheral end of the flange 44d. 44 g is forcibly crushed in accordance with the compression force between the front bumper 12 and the front fender panel 13, thereby maintaining airtightness.

As shown in FIG. 6B, points P and P at which the elastic bead 44g comes into contact with both the end of the front bumper 12 and the end of the front fender panel 13 from the base end of the flange 44d. The molding dimensions L and L up to '
Are set in the same manner as L and L 'shown in Fig. 7, so that the same operation and effect as the above-described elastic bead 34g can be obtained.

With the above configuration, the front bumper 12
When attaching the end of the fixing device 14 to the front fender panel 13, first, the lower portion 14 c of the fixing device 14 is fitted into the bolt insertion hole 12 b of the front bumper 12, and from this state, the fixing device 14 is tightened with the screw 15 and the washer 16. The mounting portion 12a of the front bumper 12 is sandwiched between the flange 14d of the fixture 14 and the washer 16.

Next, with the upper part 14b of the fixture 14 inserted into the fixture engagement hole 13b of the front fender panel 13, the front bumper 12 is pushed up toward the front fender panel 13 to lock the fixture 14 as it is. The front bumper 12 is mounted on the front fender panel 13 by engaging the groove 14 e with the fixture engagement hole 13 b of the front fender panel 13.

At this time, the elastic lip 14 of the fixture 14
g is crushed to create a gap between the edge 12c of the front bumper 12 and the edge 13c of the front fender panel 13, and the airtightness between the edge 12c of the front bumper 12 and the edge 13c of the front fender panel 13 is maintained. Is done.

On the other hand, the locking groove 14e of the fixing device 14 is first engaged with the fixing device engaging hole 13b of the front fender panel 13, and from this state, the lower portion 14c of the fixing device 14 is inserted into the bolt insertion hole 12b of the front bumper 12. After that, the fixture 14 can be tightened with the screw 15 and the washer 16 to attach the front bumper 12 to the front fender panel 13.

By the way, in the above-described embodiment, the method of mounting the front bumper 12 as the bumper and the front fender panel 13 as the fender panel has been described as the method of mounting the vehicle bumper end portion of the present invention. The present invention can also be applied to a mounting method with a rear fender panel.

[0034]

As described above, in the method of mounting the end of the vehicle bumper on the vehicle body according to the present invention, the mounting hole is opened in the mounting portion formed on the lower edge of the fender panel of the vehicle body. A mounting portion corresponding to the mounting portion and a mounting hole that opens to the mounting portion corresponding to the mounting hole are provided in a bumper having a substantially U-shaped planar shape, and a flange is provided in an intermediate portion. Deformation on the peripheral end surface of the flange
A shaft-shaped fixing tool provided with a resilient lip for possible sealing is prepared, and the bumper and the fender panel are connected to each other with both ends of the fixing tool fitted into the mounting holes. When using the fixing tool to tighten and fix
Position the flange of the fixture between the mounting portions.
In addition, since the elastic lip is squashed between the two mounting portions to seal between the two mounting portions, it is possible to easily mount the bumper to the vehicle body while having a simple structure, and The airtightness between the bumper and the vehicle body can be ensured, and the cost of parts and the number of mounting steps can be reduced.

[Brief description of the drawings]

[1] a structure of a main portion according to the vehicle body mounting method of the bumper end vehicle of the present invention shows, (A) is a vehicle body attachment state
Sectional drawing, (B) is sectional drawing of a fixture .

FIG. 2 is an exploded perspective view of the main part.

FIG. 3 is a perspective view of an automobile.

FIG. 4 is an enlarged sectional view showing a modification of the elastic lip.

FIG. 5A is an enlarged sectional view showing a second modified example of the elastic lip portion, and FIG. 5B is an enlarged sectional view of a main part thereof.

FIG. 6A is an enlarged sectional view showing a third modified example of the elastic lip portion, and FIG. 6B is an enlarged sectional view of a main part thereof.

FIG. 7 is an exploded perspective view showing a configuration of a main part according to a conventional method of mounting an end of a vehicle bumper on a vehicle body.

FIG. 8 is a cross-sectional view of a main part in a state where an elastic seal is attached to a normal position.

FIGS. 9A and 9B are cross-sectional views of main parts showing a state in which an elastic seal is attached to a position shifted in the vehicle longitudinal direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 ... Bumper (front) 12a ... Mounted part 12b ... Mounting hole 13 ... Fender panel (front) 13a ... Mounting part 13b ... Mounting hole 14 ... Fixture 14g ... Elastic lip part

Claims (1)

(57) [Claims] A mounting hole is opened in a mounting portion formed at a lower edge of a fender panel of a vehicle body, and a mounting portion corresponding to the mounting portion and a mounting portion corresponding to the mounting hole are formed in the mounting portion. While a mounting hole to be opened is provided in a bumper having a substantially U-shaped planar shape, a flange is provided at an intermediate portion and
A shaft-shaped fixture having a deformable elastic lip provided on a peripheral end surface of the flange is prepared, and the bumper is fitted in a state where both ends of the fixture are fitted into the two mounting holes, respectively. and said fender panel when fixing tightening by use of the fixture and the said fastener
A vehicle body mounting method for a vehicle bumper end , wherein a flange is located between the two mounting portions and the elastic lip is crushed between the two mounting portions to seal between the two mounting portions.