Motor vehicles – Power – Having specific motor-to-body-frame relationship
Reexamination Certificate
1999-12-17
2002-05-14
Johnson, Brian L. (Department: 3618)
Motor vehicles
Power
Having specific motor-to-body-frame relationship
C180S291000
Reexamination Certificate
active
06386309
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a mount assembly for an automotive power plant, and, more particularly, to an improved mount assembly capable of preventing rocking of the power plant and also of preventing engine and transmission vibrations from being transmitted to a vehicle body so as to enhance the ride comfort of a vehicle.
2. Description of the Related Art
Typically, an automotive power plant having an engine and a transmission is mounted transversely in a vehicle. When mounting the power plant on the vehicle body, a plurality of mounts are used for preventing rocking of the power plant and preventing the engine and transmission vibrations from being transmitted to the vehicle body.
FIG. 9
shows a power plant mounted on a vehicle by employing a plurality of mounts. A power plant
104
comprises an engine
100
and transmission
102
arranged transversely in a vehicle and is fixed to the vehicle body by first, second, third, and fourth mounts
106
,
108
,
110
, and
112
. The mounts
106
,
108
,
110
, and
112
are respectively located in four directions around the power plant. That is, the first mount
106
is positioned in the vicinity of the engine-side end of the power plant and the second mount
108
is positioned in the vicinity of the transmission-side end of the power plant. The third and the fourth mounts
110
and
112
are respectively mounted in the vicinity of power plant's vehicle-front end and vehicle-rear end.
The first mount
106
connects the engine-side of the power plant
104
and the vehicle body by fixing one end of a mounting bracket
118
(the other end of the mounting bracket
118
being connected as shown in
FIG. 10
by means of bolt to one end of an engine support bracket
114
which is fixed and supports the engine
100
) and by being connected to a mounting bracket
124
fixed to the vehicle body which is supported on a front apron
122
and a side member
120
that are provided on the inner surface of the vehicle body. The first mount
106
is inserted in the mounting bracket
124
and fixed thereon by means of bolt
126
to which penetrates openings formed at the center of the first mount
106
and the mounting bracket
124
and a nut
128
(see FIG.
9
).
However, since the first mount
106
is connected to the mounting bracket
124
such that the axial bore through which the bolt
126
passes is oriented along the longitudinal direction of the vehicle body, the rigidity of the mounting bracket
124
in the longitudinal direction of the vehicle is deteriorated. Accordingly, the first mount can not efficiently prevent rocking of the power plant especially when the vehicle is abruptly accelerated and it also can not prevent the engine and transmission vibrations from being transmitted to the vehicle body. This results in a deterioration of the ride comfort of the vehicle.
SUMMARY OF THE INVENTION
The present invention has been made in an effort to solve the above problems of the prior art.
It is an object of the present invention to provide a mount for an automotive power plant capable of preventing rocking of the power plant and also of preventing the engine and transmission vibrations from being transmitted to the vehicle body by effectively absorbing vibrations of the power plant so as to improve the ride comfort of the vehicle.
To achieve the above object, in a power plant mounting structure for vehicle including an engine side mount assembly, a transmission side mount assembly, and front and rear mount assemblies, the engine-side mount assembly comprises a mount which is less stiff in front and rear directions than in the upward and downward directions of the vehicle, and is arranged such that an axis of the mount is parallel to an inertial axis of a moment of inertia of the power plant. Furthermore, it also comprises a linkage member for connecting the mount to an engine-side of the power plant by coupling a screw member coaxially fixed at the center of the mount with a screw block fixed to the engine-side of the power plant, and a mounting bracket for fixing the mount to a side member of the vehicle body.
REFERENCES:
patent: 3694895 (1972-10-01), Werner
patent: 4157227 (1979-06-01), Hahle
patent: 4667764 (1987-05-01), Sawada et al.
patent: 5074374 (1991-12-01), Ohtake et al.
patent: 5129479 (1992-07-01), Fujii et al.
patent: 5295653 (1994-03-01), Miyazaki et al.
patent: 6105548 (2000-08-01), Carlson et al.
patent: 6155372 (2000-12-01), Hirasaka
patent: 6270051 (2001-08-01), Power
patent: 060-16171 (1994-01-01), None
patent: 10-299833 (1998-11-01), None
Christie Parker & Hale LLP
Hyundai Motor Company
Johnson Brian L.
Klebe Gerald
LandOfFree
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