US 6,488,249 B1Granted

System for adjusting the longitudinal position and maintaining therein a motor vehicle seat

AssigneeRENAULT s.a.s.

InventorsPhilippe Girardi, Marc Amerigo

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Abstract

An adjustment system for a seat including at least one foot adapted to be mounted to the seat, and a slideway having a longitudinal slot configured to receive the foot in a sliding manner. The foot has an expandable mechanism with locking members having symmetric and opposed action relative to a central longitudinal plane. The slideway has a plurality of locking portions. The expandable mechanism has a first position in which the locking members are oriented with a first transverse width such that the expandable mechanism can be introduced into and extracted from the slot. The mechanism has a second position where the locking members have a second transverse width such that a locking member is engaged to a locking portion, thereby immobilizing the foot relative to the slideway. And, the expandable mechanism has an intermediate position where the locking members have a third transverse width such that the locking members are disengaged from the locking portions to permit longitudinal displacement of the foot relative to the slideway, and such that the locking members are retained within the slot.

Claims8

Dependent claims

A system for adjusting a longitudinal position of a subassembly on a horizontal floor of a passenger compartment of a motor vehicle and for blocking same in adjusted position, said system comprising the subassembly having feet and two parallel slideways which accommodate, in longitudinal sliding manner, members for guiding longitudinal displacements and for locking the feet of the subassembly, which is of substantially vertical orientation, in adjusted position, characterized in that the lower end of at least one of the feet is equipped with a movable expandable mechanism controlled between:

a first position, defined as engagement or disengagement position, in which two locking members for mechanism, with symmetric and opposed action relative to a central longitudinal plane, are in inwardly retracted position, in which their transverse width permits vertical introduction or extraction of the mechanism in the slideway via a central longitudinal slot thereof, bounded by two longitudinal and parallel upper rims of the slideway;
and a second extreme position, defined as locking position, in which each of the two locking members is extended transversely outward to face an internal portion of one of the upper rims of the slot, with which they cooperate in fastening, thus vertically and longitudinally immobilizing a foot relative to the slideway;
while passing through at least one intermediate position, defined as adjustment position, in which each of the two locking members is extended transversely outward to face said internal portion of one of the upper rims of the slot, to retain the foot vertically relative to the slideway and permit longitudinal displacements of the foot relative to the slideway.

Dependencies are inferred from the claim text.