초록 ▼

The invention relates to a vehicle seat, of the type in which a seat part is spring-mounted on a base part and in which the height of the seat part above the base part can be varied by varying the preload of the spring. The movement of the seat part is limited by UP-stop and DOWN-stop assemblies and

The invention relates to a vehicle seat, of the type in which a seat part is spring-mounted on a base part and in which the height of the seat part above the base part can be varied by varying the preload of the spring. The movement of the seat part is limited by UP-stop and DOWN-stop assemblies and the invention provides means for automatically moving the UP-stop position in dependence upon a change to the static height of the seat.

대표청구항 ▼

A vehicle seat comprising a seat part, a base part, a suspension interconnecting the seat part and the base part and forming a guide for the upward and downward movement of the seat part relative to the base part, a seat-supporting spring which acts upwardly on the seat part and, under static load c

A vehicle seat comprising a seat part, a base part, a suspension interconnecting the seat part and the base part and forming a guide for the upward and downward movement of the seat part relative to the base part, a seat-supporting spring which acts upwardly on the seat part and, under static load conditions supports the seat part and the seat occupant at a ride position which is adjustable by varying the preload of the spring, the seat having elements which move relatively to one another during rise and fall of the seat part relative to the base part, an up-stop device and an up-stop abutment mounted respectively on said relatively movable elements of the seat, a support member fixed to one said element and on which the up-stop device is movably mounted, said up-stop device being movable relative to the support member to vary the up-stop position, namely, the height of the seat part at which further upward movement of the seat part is prevented by mutual engagement of the up-stop device and up-stop abutment, characterised by the improvement that the up-stop device is compressible, against the force of a first return spring, through a distance corresponding to the distance between the ride position of the seat and the up-stop position, and the seat includes, a normally engaged, but releasable, locking device for locking the up-stop device to said support member, and, a second return spring which acts on the up-stop device and, upon release of the locking device, urges the up-stop device against the abutment device with a force substantially weaker than the force of the first return spring.