POWER SLIDE DEVICE FOR VEHICLE SEAT
First Claim
1. A power slide device for vehicle seat, comprising:
- a lower rail disposed on a floor surface of a vehicle;
an upper rail disposed on a seat and engaged with said lower rail in a slidable manner;
a screw rod which is rotatably supported by one of said upper rail and said lower rail;
a gear box, provided at an end of the screw rod supporting rail, for rotationally driving said screw rod;
a feed nut which is screw-engaged with said screw rod and fixed to the other of said upper rail and said lower rail;
a pair of load transmitting members which are held by said screw rod supporting rail at positions spaced from each other in an extension direction of said screw rod supporting rail; and
at least one load receiving member which is positioned between said pair of load transmitting members and provided on said screw rod in a manner to restrict a position of said load receiving member on said screw rod in an axial direction thereof,wherein the feed nut supporting rail and said screw rod supporting rail are respectively provided with openings which face each other, andwherein said pair of load transmitting members are provided with force application portions that are positioned closer to said opening side of said screw rod supporting rail than said screw rod.
1 Assignment
0 Petitions
Accused Products
Abstract
In a power slide device for vehicle seat which moves an upper rail in the forward/rearward direction by rotationally driving a screw rod, by providing a screw rod supporting rail with a pair of load transmitting members that are spaced from each other in the forward/rearward direction and providing the screw rod with a load receiving member which is in contact with the pair of load transmitting members, bucking is supported at a plurality of points when the buckling occurs in the screw rod due to an axial force acting on the screw rod, and this limits the direction of the buckling to reduce the amount of the buckling.
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Citations
21 Claims
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1. A power slide device for vehicle seat, comprising:
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a lower rail disposed on a floor surface of a vehicle; an upper rail disposed on a seat and engaged with said lower rail in a slidable manner; a screw rod which is rotatably supported by one of said upper rail and said lower rail; a gear box, provided at an end of the screw rod supporting rail, for rotationally driving said screw rod; a feed nut which is screw-engaged with said screw rod and fixed to the other of said upper rail and said lower rail; a pair of load transmitting members which are held by said screw rod supporting rail at positions spaced from each other in an extension direction of said screw rod supporting rail; and at least one load receiving member which is positioned between said pair of load transmitting members and provided on said screw rod in a manner to restrict a position of said load receiving member on said screw rod in an axial direction thereof, wherein the feed nut supporting rail and said screw rod supporting rail are respectively provided with openings which face each other, and wherein said pair of load transmitting members are provided with force application portions that are positioned closer to said opening side of said screw rod supporting rail than said screw rod. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification