JPH0776251A - Bumper for vehicle - Google Patents

Abstract

PURPOSE:To facilitate the manufacture of a bumper reinforcement, improve the assembly workability between the bumper reinforcement and a bumper stay, improve the impact energy absorbing performance and allow only one kind of reinforcement to cope with the different shape of a bumper fascia. CONSTITUTION:An upper side member 12 and a lower side member 13 are formed through the extrusion molding of aliminium material. Between the upper side member 12 and the lower side member 13, the top end part 14a of a bumper stay 14 having a U-shaped section is inserted, and the upper side member 12 is installed on the upper surface part 14b of the top end part 14a of the bumper stay by a bolt 15 and a nut 16, and the lower side member 13 is installed om the under surface part 14c by the bolt 15 and the nut 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle bumper, and more particularly to a vehicle bumper having an improved bumper reinforcement.

[0002]

2. Description of the Related Art Conventionally, as this type, there is one shown in FIGS. 4 and 5, for example. In the figure, reference numeral 1 is a bumper reinforcement, and a bumper fascia 3 made of resin is attached to the bumper reinforcement 1 via an impact absorbing material 2 made of foamed PP resin. Further, the tip end 4a of the bumper stay 4 is attached to the bumper reinforcement 1 with bolts 5 and nuts 6, and the rear end side of the bumper stay 4 is attached to the front side member 7 which is a vehicle body strength member with bolts or the like not shown. Supported.

The bumper reinforcement 1 is formed by extrusion molding an aluminum material. The bumper reinforcement 1 is formed with a screw insertion opening 1a corresponding to the position where the bolt 5 is fastened.

To fix the bumper stay 4 to the bumper reinforcement 1 with bolts 5, the bumper reinforcement 1
Before attaching the shock absorber 2 to the
The nut 6 is inserted from a in the direction of the arrow to be screwed into the bolt 5.

An example of this type is that described in Japanese Utility Model Laid-Open No. 127556/1990.

[0006]

However, in such a conventional one, as shown in FIG. 5, after the bumper reinforcement 1 is extrusion-molded, the opening 1b for introducing the cooling air and the front turn signal are introduced. Since it is necessary to form the opening 1c for disposing the lamp, the manufacturing is troublesome. Also, since the bumper reinforcement 1 has a large cross-sectional shape,
Bending is difficult. Furthermore, since the nut 6 is screwed in and inserted through the screw insertion opening 1a, so-called blind work is performed and workability is poor. Moreover, when the vehicle collides, the bumper stay 4 and the like buckle to absorb the impact energy. However, since the bumper stay 4 cannot protrude from the front side member 7 for a long time, the impact energy absorbability is that much. Can not be improved. In addition, since the bumper reinforcement 1 is integrally formed, the bumper fascia 3
When the shape of the bumper is different, it is necessary to facilitate the bumper reinforcement 1 having the different shape.

Therefore, according to the present invention, the bumper reinforcement can be easily manufactured, and the workability of assembling the bumper reinforcement and the bumper stay can be improved.
It is possible to improve impact energy absorption and
An object of the present invention is to provide a vehicle bumper that can cope with one type of bumper reinforcement even when the shape of the bumper fascia is different.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a bumper reinforcement is attached to a bumper reinforcement through a shock absorbing material, and the bumper reinforcement is a body strength member. In a vehicle bumper attached via a bumper stay, the bumper reinforcement has an upper member and a lower member formed by extrusion molding of an aluminum material, and between the upper member and the lower member, A bumper for a vehicle is characterized in that the tip of the bumper stay is inserted and screwed with a screw along the vertical direction.

[0009]

[Operation] According to such means, since the gap between the upper member and the lower member can be used as an opening for introducing cooling air in the conventional example, there is no need to post-process these openings unlike the conventional case. Easy to manufacture. Moreover, by dividing into an upper member and a lower member,
Since the cross-sectional shape can be made small, manufacturing is easy also in this respect.

Further, when the bumper reinforcement and the bumper stay are assembled, they are screwed in the vertical direction.
In this case, since each of the upper member and the lower member has a low height, the workability is better than that of the conventional deep screwing work in the lateral direction.

Further, at the time of a vehicle collision, the bumper stay is inserted between the upper member and the lower member and is longer than before, so that the impact energy absorption is improved accordingly.

Furthermore, by shifting the positions of the upper member and the lower member in the front-rear direction, even if there is a slight change in the shape of the bumper fascia, one kind of upper member and lower member can be prepared. It is possible to deal with different types of bumper fascia, and it is economical because it is not necessary to prepare a bumper reinforcement according to the type of bumper fascia as in the past.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of the present invention.

First, the structure will be described. In the figure, reference numeral 11 is a bumper reinforcement consisting of a pair of upper and lower members 12 and 13, and the bumper reinforcement 11 is attached to a bump paste 14 with bolts 15 and nuts 16. A bumper fascia 3 is attached to the bumper reinforcement 11 via a shock absorbing material 2. The rear end of the bumper stay 14 is attached to and supported by the front side member 7, which is a vehicle body strength member.

More specifically, the upper member 12 and the lower member 13 are each formed by extrusion molding of an aluminum material, and the portions corresponding to the positions where the bolts 15 are fastened, the upper member 12 having an upper surface 12a and a screw insertion opening 12b. But again
A screw insertion opening 13b is formed on the lower surface 13a of the lower member 13.

Then, the upper member 12 and the lower member 13
And the tip portion 14 of the bump pasty 14 having a U-shaped cross section.
When a is inserted, the upper member 12 is attached to the upper surface 14b of the bumper stay tip 14a by the bolts 15 and nuts 16, and the lower member 13 is attached to the lower surface 14c by the bolts 15 and nuts 16. .

In the vehicle bumper having such a structure, since the gap between the upper member 12 and the lower member 13 can be used as the cooling opening 1b and the front turn portion 1c of the conventional example, they can be used as in the conventional case. Easy to manufacture without the need for post-processing. Moreover, the upper member 12 and the lower member 13
Since the sectional shape can be made smaller than that of the conventional integrated one by dividing into, the manufacturing is also easy in this respect.

When the bumper reinforcement 11 and the bumper stay 14 are assembled, the nut 16 is vertically inserted through the screw insertion openings 12b and 13b and fixed to the bolt 15. In this case, each of the upper member 12 and the lower member 13 has a low height, and the screw insertion opening 12
The workability is better than the conventional screwing work in the horizontal direction, which has a deep depth, in order to fix the screw from above and below via b and 13b.

When a vehicle collides, the bump pasty 14
Is longer than the conventional one by the dimension L, so that the shock absorption is improved accordingly. Furthermore, from the state of this embodiment,
If the bumper stay 14 is extended forward as shown by the chain double-dashed line in the figure, the shock absorption is further improved.

Further, as shown in FIG. 3, the upper member 12
By shifting the positions of the lower member 13 and the lower member 13 in the front-rear direction, even if the shape of the bumper fascia 3 is slightly changed,
If one kind of upper member 12 and lower member 13 are prepared,
It is possible to cope with different types of bumper fascia 3, and it is economical because it is not necessary to prepare the bumper reinforcement 1 according to the type of bumper fascia 3 as in the past.

[0022]

As described above, according to the present invention, since the gap between the upper member and the lower member can be used as an opening for introducing cooling air in the conventional example, they can be used as in the conventional case. It is easy to manufacture without the need to post-process the opening. Moreover, by dividing into the upper member and the lower member, the cross-sectional shape can be made smaller than that of the conventional integrated member, and thus the manufacturing is also easy in this respect.

When the bumper reinforcement and the bumper stay are assembled, they are screwed in the vertical direction.
In this case, since each of the upper member and the lower member has a low height, the workability is better than that of the conventional deep screwing work in the lateral direction.

Further, at the time of a vehicle collision, the bumper stay is inserted between the upper member and the lower member and is longer than before, so that the impact energy absorbability is improved accordingly.

Furthermore, by shifting the positions of the upper member and the lower member in the front-rear direction, even if there is a slight change in the shape of the bumper fascia, one kind of upper member and lower member can be prepared. It is possible to deal with different types of bumper fascia, and it is economical to use without the need to prepare a bumper reinforcement according to the type of bumper fascia as in the past. .

[Brief description of drawings]

FIG. 1 is a sectional view taken along the vehicle front-rear direction showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an assembled state of a bumper reinforcement and a bumper stay showing the embodiment.

FIG. 3 is a diagram showing a bumper reinforcement and a bumper stay showing a modified example of the same embodiment.

FIG. 4 is a sectional view corresponding to FIG. 1 showing a conventional example.

FIG. 5 is a perspective view of a bumper reinforcement showing a conventional example.

[Explanation of symbols]

 11 Bumper reinforcement 12 Upper member 13 Lower member 14 Bum paste 15 Bolt 16 Nut

Claims (1)

[Claims] 1. A vehicle bumper in which a bumper reinforcement is attached to a bumper reinforcement via a shock absorber, and the bumper reinforcement is attached to a vehicle body strength member via a bump paste, wherein the bumper reinforcement is made of aluminum. It has an upper member and a lower member formed by extrusion molding of a material, and the tip portion of the bumper stay is inserted between the upper member and the lower member and screwed by screws along the vertical direction. A vehicle bumper characterized by the following.