The invention discloses a shrinkage type spring locking accessory for a seat angle
regulator. The shrinkage type spring locking accessory for the seat angle
regulator comprises a main board installed on a seat
cushion side or a backrest side, a toothed plate installed on the backrest side or the seat
cushion side and provided with an inner tooth ring, at least one lock plate which interacts with the inner tooth ring of the toothed plate and is guided by the main board, and at least one
cam which functions on the toothed plate and can rotate around the axis of the
cam, wherein the inner side of the inner tooth ring is arranged inwards along the radial direction of the lock plate, lock teeth meshed with the inner tooth ring are arranged on the periphery of the lock plate, and the
cam presses outwards along the radial direction and against the lock plate, so that the lock plate and the inner tooth ring of the toothed plate are enabled to interact. The shrinkage type spring locking accessory for the seat angle
regulator further comprises at least one shrinkage type spring, wherein the shrinkage type spring surrounds the axis of the cam, at least one portion of the shrinkage type spring functions on the cam, and furthermore at least one another portion of the shrinkage type spring functions on the lock plate. According to the shrinkage type spring locking accessory for the seat angle regulator, more latch contact points can be achieved, so that not only intensity and interval performance of the locking accessory are improved, but also a feasible
layout scheme is provided foe a plurality of locking elements simultaneously.