The invention discloses a bidirectional driving device for a seat height adjustor. The bidirectional driving device comprises a retarding piece, a driving plate, a ratchet wheel and a separating piece used for being fixed to a height adjustor body. Transition belts used for shielding part of the ratchet wheel are arranged on the separating piece, symmetrical portions of the retarding piece are sleeved with a set of pawls in a rotating mode, and the pawls are connected with the driving plate in a relative rotating mode. In a non-working state, the pawls are separated from the ratchet wheel; in a working state, the driving plate can drive the pawls to conduct revolution, and the retarding piece retarding rotation through the separating piece drives the pawls to conduct autorotation and be meshed with an inner-ring ratchet of the ratchet wheel. According to the device, under the retarding effect of the retarding piece and the separating piece, matching between the pawls and the ratchet wheel is achieved, and the effect that the driving plate enables the ratchet wheel to conduct unidirectional rotation is achieved, so that the operating movement range is saved; the symmetrical pawls are arranged on the driving plate and the retarding piece, and therefore stress balance of the ratchet wheel in the rotation process can be achieved. The invention further discloses a seat comprising the bidirectional driving device and a vehicle.
Vehicle, seat and bidirectional driving device of seat
2016-02-17
Patent
Elektronische Ressource
Englisch
IPC: | B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet |