Seat walk-in device for automobiles

Claim 1

A seat walk-in device for automobiles with a front seat adjuster having a seat back tiltably fitted to a seat cushion, a sliding rail longitudinally fixed under the seat cushion, a stationary rail adapted to engage with the sliding rail and fixed on the automobile's floor and a seat position adjusting lock lever pivotally fitted to the sliding rail so as to releasably engage with a lock hole formed in the stationary rail, which comprises a control lever pivotally fitted to the sliding rail so as to rotate interlockingly with the tilting of the seat back, spring engaging means fitted to the free end of the rotating control lever so as to releasably engage with a guide member fixed to the stationary rail, a link piece pivotally interposed through pin members between the control lever and the lock lever and at least a spring member having one end hooked on said sliding rail and its other end hooked on at least one of said lock lever, said control lever and said link piece to urge the lock lever constantly to rotate toward the lock hole and the spring engaging means on the control lever constantly toward the guide member, wherein, on tilting forward the seat back, the lock lever is released from the lock hole in the stationary rail through the control lever and link piece against the urging force of the spring members to cause the sliding rail to slide, together with the seat cushion, toward the front of the automobile to increase the entering or leaving space for the rear sitter and, on sliding the seat cushion backward, the lock lever automatically engages with the lock hole, urged by the spring members, when the spring engaged means has moved to a predetermined position guided by the guide member.