The present disclosure provides a seat cushion extension device for a fold-and-dive seat. The seat cushion extension device may include a pair of seat cushion side frames arranged at a predetermined interval, a seatback frame rotatably connected to the pair of seat cushion side frames and having a guide pin formed on an outer surface thereof, a seat cushion frame, a pair of links rotatably connected between the pair of seat cushion side frames and a front end of the seat cushion frame, and a pair of extension frames. Each of the pair of extension frames may have a front end connected to the seat cushion frame, and a rear end formed with a guide hole, into which a guide pin may be inserted. The seat cushion extension device may facilitate a forward extension of a seat cushion regardless of a position of a seatback of the fold-and-dive seat.

A vehicle seat having a seat part and a vehicle seat base with a frame part for supporting the seat part or for attachment to a vehicle body and a height-adjustable scissors mechanism with a scissors arm. The frame part has a first rail element. An end of the first scissors arm is connected to the first rail element by a floating bearing that has a rolling element with an axle and a sliding element that are arranged one behind the other The rolling element has a contact point with a rolling plane of the first rail element and the sliding element has a contact point with a sliding plane of the first rail element or of a second rail element of the frame part. The rolling plane and the sliding plane are aligned at an angle from a range 0<<90 to one another.