LONGITUDINAL ADJUSTER FOR VEHICLE SEAT

A longitudinal adjuster (2) for a vehicle seat (1), comprising: a guide rail arrangement (SA), having two guide rail pairs (PI, P2) comprising seat guide rails (3, 4), each guide rail pair comprising a first seat guide rail (3) and a second seat guide rail (4) which is movable with respect to the first seat guide rail (3); a motor unit (12); a gear unit (G) having at least one gear rotary shaft (6), the gear rotary shaft being configured to be at least connected to the first seat guide rail (3) of one of the guide rail pairs (P 1, P2); a rotatable gear element (7) which works in concert with the gear rotary shaft (6); a transmission unit (11), which is coupled with the gear unit (G) and the motor unit (12) to transmit torque of the motor unit (12) to the gear rotary shaft (6); a gearbox (9), which at least partially receives the gear unit (G); and a support (5) used for receiving the gearbox (9). The support (5) and the gearbox (9) are provided together inside a gap (BR) formed between the first seat guide rail (3) and the second seat guide rail (4) of the guide rail pair (P 1), pass through a guide rail opening (13) of the second guide rail (4), and at least partially extend out of the guide rail opening, enabling the support (5) to close the guide rail opening (13) of the second guide rail. Also provided is a vehicle seat (1), having the longitudinal adjuster (2) used for mechanically and longitudinally adjusting the vehicle seat (1).