| 摘要 |
PURPOSE: A hydraulic type seat sliding device for a car is provided to reduce shock and continuously change a location of a seat by forcibly sliding the seat to the rear using hydraulic pressure when the car comes into collision. CONSTITUTION: A hydraulic type seat sliding device for a car includes a hydraulic cylinder(12), a piston(13), first and second holes, and an auxiliary piston(22). The hydraulic cylinder is fixed on a support bracket(11a) and slides on a slide part(18). The piston is inserted into an inner cylinder of the hydraulic cylinder and circulates the hydraulic pressure through a flow channel and a hollow part. The first and second holes are formed in a front end and an upper portion of the inner cylinder and circulate the hydraulic pressure. The auxiliary piston is mounted in the flow channel, serves as a damper by the circulated hydraulic pressure and has a spring(23).
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