Land vehicles – Wheeled – Running gear
Reexamination Certificate
2000-02-10
2002-02-26
Mai, Lanna (Department: 3619)
Land vehicles
Wheeled
Running gear
C280S781000, C280S800000, C280S797000, C280S788000, C296S204000, C296S203040
Reexamination Certificate
active
06349953
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a suspension mounting portion and an assembling method of the suspension mounting portion, and particularly to a structure of a suspension mounting portion of a vehicle such as an automotive vehicle and the like and an assembling method of the suspension mounting portion.
In general, the structure of the suspension mounting portion of the automotive vehicle and the like requires accurately, positioning a suspension system assembled therein and having sufficient strength and rigidity. Then, a structure suitable for manufacturing processes in a mass production line is also required for the structure of the suspension mounting portion mentioned above, and it is of course necessary to satisfy a requirement in view of a cost, a weight and the like.
In accordance with considerations of the inventors of the present invention, there is exemplified a structure of a suspension mounting portion shown in
FIGS. 8 and 9
.
In
FIGS. 8 and 9
, reference numeral
101
denotes a frame member in a longitudinal direction of a vehicle, that is, a rear side member having a main cross section formed in a hat shape.
The rear side member
101
is structured such that a flange
101
a
in an upper edge thereof is joined to a lower surface of a rear floor panel
102
. On the contrary, in a side portion of the vehicle, the upper edge flange
101
a
is joined to an end portion of a wheel house inner
103
corresponding to a frame member in a rear side portion of the vehicle together with the rear floor panel
102
. As mentioned above, a closed cross sectional portion
104
is formed by the rear side member
101
and the floor panel
102
.
Reference numeral
105
denotes a suspension bolt which is fixed to the closed cross sectional portion
104
and mounts a suspension bracket (not shown) to a lower side of the closed cross sectional portion
104
. Amounting portion
110
is provided in a center portion of the suspension bolt
105
.
Reference numeral
113
denotes a lower bracket having a first mounting surface
106
for mounting the suspension bolt
105
. The lower bracket
113
is structured such that peripheral edge flanges
113
a
thereof are joined to an outer side wall
101
b
and a lower surface
101
c
of the rear side member
101
.
Reference numeral
114
denotes an upper bracket having a second mounting surface
107
for mounting an upper end portion of the suspension bolt
105
. The upper bracket
114
is structured such that peripheral edge flanges
114
a
thereof are joined to a reinforce
108
inserted into the rear side member
101
so as to be abutted on a bottom wall
101
A of the rear side member
101
along an inner side thereof.
In the structure mentioned above, particular assembling process of the suspension bolt
105
are as follows.
At first, the suspension bolt
105
is inserted into a bolt insertion hole
118
of the lower bracket
113
and the mounting portion
110
of the suspension bolt
105
is fixed to a first mounting surface
106
of the lower bracket
113
by means of a welding P such as a projection welding and the like.
In the meantime, the reinforce
108
and the upper bracket
114
are sub-assembled.
Next, the rear side member
101
and the lower bracket
113
are joined to each other while inserting the upper portion of the suspension bolt
105
from a bolt insertion hole
115
provided in the rear side member
101
.
Next, the reinforce
108
and the upper bracket
114
which are integrally formed in accordance with the sub-assembly are joined to the rear side member
101
while successively inserting the upper portion of the suspension bolt
105
into a bolt insertion hole
116
provided in the reinforce
108
and a bolt insertion hole
119
provided in the upper bracket
114
.
Next, the upper end portion of the suspension bolt
105
is fixed to the second mounting surface
107
provided in the upper bracket
114
by means of the projection welding P or the like.
As in the manner mentioned above, the suspension bracket is fixed to the lower side of the closed cross sectional portion
104
by the suspension bolt
105
extending and fixed through the first mounting surface
106
and the second mounting surface
107
.
SUMMARY OF THE INVENTION
However, even in accordance with the structure mentioned above, the structure is complex, a number of the assembling processes is excessive and a cost therefore is increased.
Further, since the number of the parts is excessive such as the lower bracket
13
, the upper bracket
14
and the like, a man-hour for managing the parts and a weight becomes much.
Accordingly, an object of the present invention is to provide a structure of a suspension mounting portion which can achieve both of making a weight of a vehicle light and improving a supporting rigidity of a suspension system, and an assembling method thereof.
The structure of the suspension mounting portion in accordance with the present invention is provided with a side member which extends in a longitudinal direction of a vehicle and is connected to a lower surface of a floor panel, a closed cross sectional portion which is formed by use of the floor panel and the side member, a suspension bolt which mounts a suspension system constituting element to a lower side of the closed cross sectional portion, a first mounting surface which is provided by use of a recess portion formed on a bottom wall of the side member and mounts the suspension bolt, a reinforce which is provided to an inner portion of the closed cross sectional portion, and a second mounting surface which is provided to the reinforce and mounts the suspension bolt. The suspension system constituting element is mounted to the lower side of the closed cross sectional portion by use of the suspension bolt fixed through the first mounting surface and the second mounting surface.
On the contrary, an assembling method of a suspension mounting portion in accordance with the present invention comprises steps of inserting an end portion of a suspension bolt to a bolt insertion hole formed on a first mounting surface of a side member, fixing the suspension bolt to the first mounting surface, inserting the other end portion of the suspension bolt to a bolt insertion hole provided in a reinforce, fitting the reinforce to an inner side of the side member, and fixing the other end portion of the suspension bolt to a second mounting surface provided in the reinforce. In this case, the structure is made such that the side member extends in a longitudinal direction of the vehicle and is connected to the lower surface of the floor panel, and the first mounting surface is provided by use of a recess portion of the side member. Then, a suspension system constituting element is mounted to a closed cross sectional portion formed by use of the floor panel and the side member, by means of the suspension bolt fixed through the first mounting surface and the second mounting surface.
REFERENCES:
patent: 5938220 (1999-08-01), Torneld
patent: 403028009 (1991-02-01), None
patent: 403132410 (1991-06-01), None
patent: 404046874 (1992-02-01), None
patent: 404090975 (1992-03-01), None
patent: 404090976 (1992-03-01), None
patent: 404215565 (1992-08-01), None
patent: 409207823 (1997-08-01), None
Sone Kitaru
Yoshihira Noboru
IIan Ruth
Mai Lanna
McDermott & Will & Emery
Nissan Motor Co,. Ltd.
LandOfFree
Structure of suspension mounting portion and assembling... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Structure of suspension mounting portion and assembling..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structure of suspension mounting portion and assembling... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2948223