JPH0340674Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a synthetic resin bumper used for damage prevention and exterior design of vehicles.

[Problems to be solved by the prior art and invention] Currently, polyurethane bumpers are often used for bumpers installed on vehicles, which absorb shocks caused by relatively minor collisions and prevent damage to the vehicle. There is.

As shown in FIG. 3, by forming an outer shape with a polyurethane skin 10 and further arranging an energy absorber 14 between the back side of this and the reinforcement 12, the impact applied to the skin 10 can be reduced. is transmitted to the energy absorber 14, and the impact is absorbed by the skin 10 and the energy absorber 14.

Therefore, the skin 10 is preferably formed to be thin so that this impact can be easily transmitted to the energy absorber 14.

Furthermore, since this polyurethane bumper is attached as part of the exterior design of the vehicle as an exterior design item, polyurethane is also suitable in terms of ease of formation on the skin.

However, this polyurethane is sensitive to heat and has a thin skin that easily deforms.
In a vehicle equipped with the bumper grille 16, the skin 10 sag and deform due to the load F such as the skin's own weight, especially in the gap 18 between the upper surface of the bumper grille 16 and the lower surface of the skin 10 (as shown by the two-dot chain line in FIG. 3).

In order to solve this problem, it has been considered to arrange a retainer 20 inside the epidermis 10, hold the epidermis 10 with clips 22, and prevent the epidermis 10 from falling down with the rigidity of the clips 22.

However, in such a structure, the retainer 20 is placed in advance and the clips 22 are inserted before the bumper is formed, which increases the number of parts and steps, resulting in poor workability.

In consideration of the above facts, the present invention aims to provide a synthetic resin bumper that can prevent the skin from deforming due to heat by simply changing the shape of the existing parts.

[Means for Solving the Problems] A synthetic resin bumper according to the present invention includes a skin made of synthetic resin, an opening formed in a part of the skin, and a part of the skin inserted into the opening. a bumper grille that is arranged to be spaced apart from the bumper grille, and a part of the spaced apart facing portion between the surface of the skin that forms the opening that faces downward from the vehicle and the top surface of the bumper grille that protrudes from either the bumper grille or the skin. and a holding means whose directional tip abuts on the other side of the skin or the bumper grille.

[Function] The synthetic resin bumper according to the present invention has a holding means formed in the portion facing the upper surface of the bumper grille and the surface facing downward of the vehicle of the skin forming the opening in which the bumper grille is disposed.

This prevents the skin from softening due to heat and from sagging due to being unable to withstand loads such as its own weight.

Therefore, the design of the synthetic resin bumper, which is an exterior design product, is maintained.

Further, since no other parts are required, work efficiency is improved.

[Example] Fig. 1 shows a front bumper 24 used to prevent damage when a vehicle collides with an object and as an exterior design item.
It is shown.

The main parts of this front bumper 24 are a skin 26 and a shock absorber 2, as shown in FIG.
8 and is provided with a bumper grill 30.

The skin 26 is made of thin polyurethane and has the external shape of the front bumper 24.

This front bumper 24 has a groove 32 extending in the vehicle width direction formed in the middle part of the surface facing forward when mounted on the vehicle.

This groove 32 is an intake port for cooling air of a radiator (not shown), and a bumper grill 30 is installed as an exterior design item.

A bottom portion 34 of this groove 32 is in contact with a portion of reinforcement 36 provided on the back surface of the front bumper 24.

Only the portion where the bumper grille 30 is fixed to this reinforcement 36 is located at the bottom 34 of the groove 32.
The upper and lower parts of the epidermis 26 are continuous, and
The other part is a slit that sends outside air to the radiator.

The reinforcement 36 is made of a steel plate and has a closed cross-sectional shape, and the lower part is in contact with the back surface of the skin 26 of the front bumper 24, and the bolt 38 and nut 40
is fixed.

Further, above the reinforcement 36, a flange portion 42 is formed with both end surfaces facing in the longitudinal direction of the vehicle. One end surface of this flange portion 42 is in contact with a fixing plate 44 protruding from the back surface of the skin 26, and is fixed with bolts 38 and nuts 40 in the same manner as the lower side.

As a result, the epidermis 26 and reinforcement 3
A closed cross section sandwiched between 6 and 6 is formed.

In this case, the cross section of the portion where the groove 32 shown in FIG. 2 is formed has two closed cross sections above and below.

A shock absorber 28 is disposed in the closed cross-sectional space so as to fill almost the entire area thereof. This allows the front bumper 24 to absorb the impact of a relatively minor collision, thereby preventing damage to the vehicle.

Further, a bumper grille 30 is inserted inside the groove 32. The bumper grill 30 is made of metal or hard synthetic resin, and has a U-shaped cross section perpendicular to the width direction, as shown in FIG.

The opening surface of the bumper grille 30 is disposed toward the front of the vehicle, and the tip of the protruding portion 46 provided at the bottom of the outer periphery of the bumper grille 30 is aligned with the groove 3.
It is in contact with 2.

This convex portion 46 has a reinforcement 36
The bumper grille 30 is fixed in the groove 32 by screwing a bolt 52 into a nut 50 that is roughly welded to the reinforcement 36.

Bumper grille 30 and groove 3 fixed in this way
A gap 54 is formed between the bumper grille 3 and the bumper grille 3.
It is used to absorb installation errors when inserting and fixing the 0 into the groove 32.

Above this gap portion 54, an intermittent arc-shaped convex portion 56 is formed over the entire width direction, and the groove 3
2 is in contact with the inner surface. As a result, it is possible to reduce distortion of the skin 26 due to thermal expansion.

The operation of this embodiment will be explained below.

When a vehicle equipped with the front bumper 24 having the above structure has a relatively minor collision, the skin 26 of the front bumper 24 and the shock absorber 28 absorb the impact, thereby preventing damage to the vehicle.

Therefore, in order to reliably transmit this impact to the shock absorber 28, the skin 10 covering the shock absorber 28 is made of a thin synthetic resin.

A groove 32 serving as an air intake for cooling the radiator is formed in the skin 26, and a bumper grill 30 is installed inside the groove 32 with a gap between the inner peripheral surface of the groove 32 and the groove 32.

As a result, the radiator grill (not shown), which is conventionally arranged above the bumper, can be made smaller or eliminated, and the appearance of the bumper is improved.

Further, the bumper grille 30 has an arcuate convex portion 5.
6 is formed, and the epidermis 26 is deformed by heat,
In particular, since sagging is prevented, the protection effect of the front bumper 24 as an exterior design item is improved.

In this way, since the shape of the existing bumper grille 30 is only partially changed, no other parts are required, and workability is improved.

In this embodiment, the holding means is formed integrally with the bumper grille, but the holding means may be formed integrally with the skin.

[Effects of the invention] As explained above, in the synthetic resin bumper according to the invention, an opening is formed in the outer skin, a bumper grill is inserted and fixed into this opening, and a part of the space between the upper surface of the bumper grill and the outer skin faces the upper surface of the bumper grill. By forming the holding means in the structure, it is possible to prevent deformation of the skin due to heat by simply changing the shape of the existing parts, which is an excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a front bumper according to this embodiment, FIG. 2 is a sectional view taken along the line in FIG. 1, and FIG. 3 is a sectional view taken along the line in FIG. 1 of a conventional polyurethane bumper. 24...Front bumper, 26...Skin, 30
... Bumper grille, 32 ... Opening, 56 ... Arc-shaped convex portion.

Claims (1)

[Scope of utility model registration request] A skin made of synthetic resin, an opening formed in a part of the skin, a bumper grill inserted into the opening and arranged with a part spaced apart from the skin, and a skin forming the opening. a holding means protruding from either the bumper grille or the skin at a part of the spaced-apart face between the surface facing downward of the vehicle and the upper surface of the bumper grille, the tip of which in the protruding direction is in contact with the other side of the skin or the bumper grill; A synthetic resin bumper with