Front body structure of vehicle

Details Front body structure of vehicle Front body structure of vehicle

1999-09-29

2001-06-26

Dayoan, D. Glenn (Department: 3612)

Land vehicles: bodies and tops

Bodies

Body shell

C296S190050

Reexamination Certificate

active

06250710

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a front body structure of a vehicle and, more specifically to, a reinforcement structure of a front body.
Various front body structures have been proposed in order to enhance a shock absorbing performance of vehicles in an event of collision. For example, Japanese Patent Application Laid-open No. Toku-Kai-Hei 4-349077, as shown in
FIG. 6
, discloses a technique in which a Y-shaped reinforcement member
500
is disposed respectively at both sides of a cowl
100
which constitutes a lower part of a front windshield of a vehicle.
The reinforcement member
500
has a box-like cross section, or closed cross section, which comprises a base member
600
extending in a transverse direction of the vehicle and a pair of pronged portions
700
,
800
bifurcated at both ends
600
a
of the base member
600
. The rear ends
700
a
,
800
a
of the pronged portions
700
,
800
are connected to an upper portion
1000
a
and lower portion
1000
b
of a lower front pillar
1000
which constitutes a lower part of a front pillar
200
, respectively. Further, a flange portion
900
of the reinforcement member
500
is spot-welded to a wheel apron
110
.
This prior art in which the reinforcement member is secured to the wheel apron is capable of reducing loads exerted on the front pillar or the cowl, compared to a case where no reinforcement member is used, when an excessive load is applied to the front portion of the vehicle. Therefore, it is desired to use the reinforcement member in more effective way, for example, in such a manner that an impact load applied to the front pillar can be reduced.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a front body structure capable of reducing the deformation of a front pillar and the like effectively.
A front body structure of a vehicle having a front pillar, a front bulkhead and a front wheel apron comprises a first reinforcement member on which a reinforcement structure such as beads is provided and welded to the front pillar, the front bulkhead and the front wheel apron. Further, the front body structure comprises a second reinforcement member having a closed cross section, covering at least part of the first reinforcement member and welded to the first reinforcement member.


REFERENCES:
patent: 4078840 (1978-03-01), Itoh
patent: 4270793 (1981-06-01), Harasaki
patent: 4545612 (1985-10-01), Harasaki
patent: 4669777 (1987-06-01), Harasaki et al.
patent: 4699419 (1987-10-01), Kawase et al.
patent: 4723811 (1988-02-01), Harasaki
patent: 60-60764 (1987-01-01), None
patent: 4-349077 (1992-12-01), None
Abstract of Japan vol. 1998, No. 5, (Apr. 30, 1998) JP 10 001069, (Jan. 6, 1998).

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