Patent ID: 9358858
Filing Date: 2016-06-07
CPC Classification: B60H,B60J

Claim Text:
1. An opening and closing device of an air vent for a vehicle capable of raising or lowering the air vent so as to open or close a ventilating part, the opening and closing device comprising: a first link part and a second link part rotatably provided at both sides of the ventilating part; a hydraulic cylinder part having one side fixed to the air vent and the other side connected to the first link part; a piston rod part having one side connected to the second link part and the other side slidably coupled to the hydraulic cylinder part; and an adjusting part configured to fix the piston rod part to not slide into the hydraulic cylinder part or release the piston rod part to be slidable, wherein the piston rod part includes a torsion bar connected to the second link part and a piston head rotatably and slidably coupled to the hydraulic cylinder part and provided with first through-holes.