JPH05238337A - Method for mounting vehicular bumper end on car body - Google Patents

Abstract

PURPOSE:To provide a method for mounting a vehicular bumper end section onto a car body in which a bumper can be mounted onto the car body with ease, its mounting structure is simple though, furthermore airtightness between the bumper and the car body can be made sure, and both cost to manufacture parts and manhours required for mounting can be reduced. CONSTITUTION:A mounting hole 13b is opened for a mounting section formed at the lower periphery of the fender panel 13 of a car body, a mounted section 12a corresponding to the mounting section 13a and a mounting hole 12b which is opened for the mounted section 12a correspondingly to the mounting hole 13b are provided for a bumper 12, meanwhile, when the bumper 12 and the fender panel 13 are fastened so as to be fixed by making use of a fixture 14 in a state that the fixture 14 provided with an elastic lip 14g is engaged with both the mounting holes 12b and 13b respectively, the elastic lip 14g of the fixture 14 is devised to be squeezed between both the mounting sections 12a and 13a, so that a space between both the mounting sections 12a and 13a is sealed.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 7 and 8, a front bumper having a generally U-shaped plan view from the front to the side of a vehicle body is bent inward at the upper edge of the front bumper 1 as shown in FIGS. It has a mounting portion 1a and a bolt insertion hole 1b formed at an end of the mounted portion 1a.

On the other hand, on the lower edge of the front part of the front fender panel 2, there is formed a mounting portion 2a which is bent inward so as to face the mounted portion 1a of the bumper 1. A fixing tool insertion hole 2b for inserting the fixing tool 3 is formed in the mounting portion 2a above the bolt insertion hole 1b formed in the front bumper 1. In addition, the edge 1c of the front bumper 1 and the front fender panel 2
The edge portion 2c is continuous in an arch shape.

In the fixture 3, a head 3a and a flange 3b integrally formed at the 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.

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 the mounted portion 1a of the front bumper 1.
Double-sided tape 4a attached to the upper surface of the elastic seal member 4
Is attached to the flange 3b of the fixture 3 and the mounting portion 2a of the front fender panel 2. Further, the elastic seal member 4 is provided with a bolt insertion hole 4b similar to the bolt insertion hole 1b of the front bumper 1. The bolt insertion hole 4b also serves as a position when the elastic seal member 4 is attached to the front bumper 1.

[0006] The front bumper 1 configured in this way
Fix the fixture 3 and the elastic seal member 4 with the screw 5 so as to be positioned between the mounted 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 attachment portion 2a of the front fender panel 2. It was attached and was temporarily holding the front bumper 1.

[0007]

By the way, in the above-mentioned vehicle body mounting method for the end portion of the vehicle bumper, since the elastic seal member 4 is attached by the double-sided tapes 4a, 4a,
Positioning with respect to the front bumper 1 was troublesome and required skill.

Further, 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 displaced in the front-rear direction of the vehicle body or in the left-right inward and outward directions, the front bumper 1 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 becomes narrow.

Moreover, as shown in FIG. 9A, when the elastic seal member 4 is attached to the front of the vehicle body while being displaced, the front bumper 1 and the front fender panel 2 are attached.
The airtightness between the elastic seal member 4 and
As shown in (B), when it is mounted so as 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, but can easily attach the bumper to the vehicle body, and ensures the airtightness between the bumper and the vehicle body. It is an object of the present invention to provide a method for mounting a vehicle bumper end on a vehicle body, which is capable of reducing the cost of parts and the number of mounting steps.

[0011]

In order to achieve the object, the present invention has a mounting hole formed in a lower edge of a fender panel of a vehicle body and has a mounting hole corresponding to the mounting portion. A mounting portion and a mounting hole corresponding to the mounting hole, which opens to the mounted portion, are provided in a bumper having a substantially U-shaped planar shape, while an elastic lip for sealing is provided in an intermediate portion. When a fixing tool is prepared and the both ends of the fixing tool are fitted in the both mounting holes, respectively, when the bumper and the fender panel are tightened and fixed by using the fixing tool, the fixing is performed. The gist is that the elastic lip of the tool is crushed between the both mounting portions to seal between the both mounting portions.

[0012]

[Operation] At the same time as attaching the end of the bumper to the fender panel, at the same time as the tip of the bumper end and this tip are provided by the elastic lip portion provided on the flange integrally formed with the fixture for fixing the bumper to the fender panel. The gap with the edge of the continuous fender panel is closed.

[0013]

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

FIG. 1 is an enlarged sectional view of an essential part of the present invention, FIG. 2 is an exploded perspective view of the essential part, FIG. 3 is a perspective view of a vehicle, and FIG. 4 is a sectional view of the essential part showing another example of an elastic lip part. Is.

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

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

At the lower edge of the front part of the front fender panel 13, there is formed a mounting portion 13a which is bent inward so as to face the mounted portion 12a of the front bumper 12. The attachment portion 13a is located above the bolt insertion hole 12b formed in the front bumper 12 and is fixed to the fixture 1
A fixing tool engaging hole 13b for engaging 4 is formed. Further, the edge portion 12c of the front bumper 12 and the edge portion 13c of the front fender panel 13 are continuous in an arch shape.

The fixture 14 is, as shown in FIG.
4a and a flange 14d that separates the shaft portion 14a into an upper portion 14b and a lower portion 14c are integrally formed of an elastic resin or the like.

The upper portion 14b of the shaft portion 14a and the flange 14d
The engaging groove 14e that engages with the fixture engaging hole 13b of the front fender panel 13 is formed in a continuous portion with the upper surface side of the
Are formed. Further, the upper portion 14b is formed in a conical shape so that its diameter becomes smaller toward the upper end.

A screw hole 14f having an opening on the end face is formed in the lower portion 14c of the shaft portion 14a. Also, this lower part 14
The maximum diameter of c is set to be approximately the same as the diameter of the bolt insertion hole 12b so that it can be fitted 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 the peripheral edge surface thereof has an edge portion 12c of the front bumper 12 and the front fender panel 13 due to the thickness of the flange 14d. An elastic lip portion 14g for filling a gap with the edge portion 13c is formed.

By the way, the elastic lip portion 14g is not limited to the shape shown in FIG. 1 and the like, but may be constructed as shown in FIGS. 4 to 6, for example.
4 to 6, the same components as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

The elastic lip portion 24g shown in FIG. 4 is constructed such that the peripheral end surface of the flange 24d is made to be a pre-crack, and the respective tip portions thereof are bent in the direction of separating to maintain airtightness. ..

Further, an elastic bead 34g as an elastic lip portion shown in FIG. 5A is formed on the peripheral end surface of the flange 34d from rubber or the like having a substantially perfect circular cross section, and the elastic bead 34g serves as the front bumper 12. Front fender panel 13
Airtightness is maintained by being crushed compulsorily according to the compressive force of.

At this time, as shown in FIG. 5B, a point P where the elastic bead 34g contacts 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, Forming dimensions up to P'L, L '
(Including L = L ') is the dimensional variation due to the processing of the flange 34d, the dimensional variation from the bolt insertion hole 12b to the outer surface of the front bumper 12, and the fixture engagement hole 13b.
From the front to the outer surface of the front fender panel 13, the front bumper 12, the front fender panel 13, and the fixture 14 are assembled in consideration of the front and rear bumper 12 and the curved surface at each end of the front fender panel 13. At this time, the length of the elastic bead 34g is set so as to be elastically contacted with the points P and P ′ located in the curved surfaces of the end portion of the front bumper 12 and the end portion of the front fender panel 13.

As a result, even if the above-mentioned variations occur, the elastic balls follow the gap dimension change between the end portions of the front bumper 12 and the front fender panel 13 due to the curved surface in the expanding direction. Edge 34g is crushed,
The elastic bead 34g can always maintain a state of being caught by both the end portion of the front bumper 12 and the end portion of the front fender panel 13.
And the side surfaces of the front fender panel 13 are substantially flush with each other, so that the appearance can be improved and the adhesion can be secured.

Further, the elastic bead 44g as an elastic lip portion 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. Airtightness is maintained by forcibly crushing 44 g according to the compressive force between the front bumper 12 and the front fender panel 13.

As shown in FIG. 6B, points P, P at which the elastic bead 44g contacts 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. Fig. 5 shows the molding dimensions up to and including "L, L".
Since it is set similarly to L and L'shown in (4), it is possible to obtain the same effect as that of the elastic bead 34g described above.

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

Next, with the upper part 14b of the fixture 14 inserted in the fixture engagement hole 13b of the front fender panel 13, the front bumper 12 is pushed up toward the front fender panel 13 side, and the fixture 14 is locked as it is. The front bumper 12 is attached to the front fender panel 13 by engaging the groove 14e with the fixture engagement hole 13b of the front fender panel 13.

At this time, the elastic lip portion 14 of the fixture 14
g is crushed so as 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. To be done.

On the other hand, the engaging groove 14e of the fixture 14 is first engaged with the fixture engagement hole 13b of the front fender panel 13, and from this state, the lower portion 14c of the fixture 14 is inserted into the bolt insertion hole 12b of the front bumper 12. It is also possible to attach the front bumper 12 to the front fender panel 13 by tightening the fixing tool 14 with the screw 15 and the washer 16 after fitting it into the front fender panel 13.

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

[0034]

As described above, in the vehicle body mounting method for the end portion of the vehicle bumper according to the present invention, the mounting hole is formed 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 in the mounting portion corresponding to the mounting hole are provided in a bumper having a substantially U-shaped planar shape, while elastic elasticity for sealing is provided in an intermediate portion. Prepare a shaft-shaped fixture equipped with a lip, and tighten the bumper and the fender panel using the fixture with both ends of the fixture fitted in both mounting holes, respectively. When fixing, the elastic lip of the fixture is crushed between the both mounting portions to seal between the both mounting portions, so that the bumper can be mounted on the vehicle body with a simple structure. Can be easy Moreover the airtightness between the bumper and the vehicle body can be assured, it is possible to achieve further reduction of component cost savings as well as the mounting steps of.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of a main part of a vehicle bumper end mounting method according to the invention.

FIG. 2 is likewise an exploded perspective view of a main part.

FIG. 3 is a perspective view of an automobile.

FIG. 4 is an enlarged cross-sectional view showing a modified example of the elastic lip portion.

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

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

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

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

9 (A) and 9 (B) are cross-sectional views of essential parts showing a state in which the elastic seal is attached at a position displaced in the vehicle front-rear direction.

[Explanation of symbols]

 12 ... Bumper (front) 12a ... Mounted part 12b ... Mounting hole 13 ... Fender panel (front) 13a ... Mounting part 13b ... Mounting hole 14 ... Fixing tool 14g ... Elastic lip part

Claims (1)

[Claims] 1. A mounting hole is opened in a mounting portion formed on a lower edge of a fender panel of a vehicle body, and a mounting portion corresponding to the mounting portion and the mounting portion corresponding to the mounting hole are mounted on the mounting portion. The mounting hole to be opened is provided in the bumper having a substantially U-shaped planar shape, while a shaft-shaped fixture having an elastic lip for sealing is provided in the middle part, and both ends of the fixture are When the bumper and the fender panel are tightened and fixed by using the fixing device in a state where they are fitted in the both mounting holes, by crushing the elastic lip of the fixing device between the both mounting portions. A method for mounting a vehicle bumper end on a vehicle body, wherein a seal is provided between the both mounting portions.