Patent attributes
The invention discloses a vehicle seat adjusting apparatus including a seat base, a mechanically operated first transmission device, a first supporting plate, a mechanically operated second transmission device, and a second supporting plate. When the first transmission device is operated to be stationary, the second transmission device is capable of being operated to rotate a rotation shaft thereof to rotate the second supporting plate with respect to the first supporting plate. The second transmission device also actuates a first gear thereof to meshably rotate on a stationary first rack member of the first transmission device, such that the second supporting plate, together with the first supporting plate, moves with respect to the seat base along a direction defined by the first rack member.