Supports – Stand – Horizontally movable support surface
Reexamination Certificate
1999-12-17
2001-10-23
Braun, Leslie A. (Department: 3632)
Supports
Stand
Horizontally movable support surface
C248S429000, C248S422000, C248S421000
Reexamination Certificate
active
06305658
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates in general to seat sliding devices of motor vehicles, and more particularly to the seat sliding device of a power type which can slide the seat to a desired position with an electric power. More specifically, the present invention is concerned with the power seat sliding device which can exhibit a satisfied durability against big shock applied thereto due to a vehicle collision or the like.
2. Description of the Prior Art
Hitherto, various power seat sliding devices have been proposed and put into practical use particularly in the field of motor vehicles. For providing the devices with a satisfied durability against a big shock applied thereto due to a vehicle collision or the like, various measures have been hitherto taken.
One of conventional power seat sliding devices having a certain durability against such shock is shown in Japanese Patent First Provisional Publication 6-336130. The power seat sliding device of this publication comprises generally a pair of lower rails fixed to a vehicle floor, a pair of upper rails slidably engaged with the lower rails and supporting thereon a seat, a drive shaft rotatably held by one of the upper rails and having a spiral groove formed therearound, an electric motor carried by the upper rails for driving the drive shaft, and a nut member fixed to one of the lower rails and operatively engage with the drive shaft.
Thus, when the electric motor is energized to rotate the drive shaft in one or other direction, the upper rails and thus the seat are moved forward or rearward on the lower rails to a desired position.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an automotive power seat sliding device, which can exhibit a satisfied durability against a big shock applied thereto due to a vehicle collision or the like.
According to the present invention, there is provided an automotive power seat sliding device, which comprises first and second lower rails adapted to be secured to a floor of a vehicle; first and second upper rail slidably and respectively engaged with the first and second lower rails and adapted to support thereon a seat; a cross beam member having both ends secured to the first and second upper rails respectively, so that the first and second upper rails slide on and along the first and second lower rails like a single unit; at least one drive shaft extending along the first upper rail and having a spiral groove formed therearound; a nut member secured to the first lower rail and operatively engaged with the drive shaft; an electric power unit supported by the cross beam member for rotating the drive shaft about an axis thereof; a supporting member connected to the first upper rail for rotatably supporting one end portion of the drive shaft; and a protector bracket secured to the first upper rail and having a recessed structure into which the other end of the drive shaft is received without contacting the recessed structure.
REFERENCES:
patent: 5273242 (1993-12-01), Mouri et al.
patent: 5275457 (1994-01-01), Satoh et al.
patent: 5707035 (1998-01-01), Kargol et al.
patent: 5765798 (1998-06-01), Isomura
patent: 5816555 (1998-10-01), Ito et al.
patent: 5823499 (1998-10-01), Ito et al.
patent: 5938164 (1999-08-01), Kargol et al.
patent: 6089665 (2000-07-01), Andrigo
patent: 0 301 461 (1989-02-01), None
patent: 0 589 218 (1994-03-01), None
patent: 6-336130 (1994-12-01), None
Braun Leslie A.
Foley & Lardner
Johnson Controls Automotive Systems Corporation
Wujciak A. Joseph
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