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    • 30. 发明专利
    • SPRING DEVICE OF VEHICLE DAMPER
    • JPS5551145A
    • 1980-04-14
    • JP12237278
    • 1978-10-03
    • YAMAHA MOTOR CO LTD
    • ITOU HEIICHI
    • B60G15/12B60G13/06B60G15/00F16F9/08
    • PURPOSE:To make an outer diameter of coil spring substantially equal to that of an outer cylindrical means to show a small diameter by utilizing a space of outer circumference of the damper and by arranging a seat plate for a coil spring at the inside of the outer cylinder and arranging a coil spring between the outer cylinder and a hydraulic damper. CONSTITUTION:When a distance between a front fixing ring 24 and a rear fixing ring 8 is reduced by an application of the outer force, the hydraulic damper 1 pushes the resilient film 29, proceeds into the outer cylinder and compresses the coil spring 38 through the clip 41 and the supporting fitting 42. Then, the damper rod 3 is pushed, the piston 4 is moved in a rightward direction and hydraulic oil is flowed from the through-hole 21 and the check valve 21a in a leftward direction. A part of the hydraulic oil is flowed between the needle valve 22b in the through-hole 22 and the jet 22a via check valve 21a, the damper 3 is proceeded into the hydraulic chamber 19, the operating oil to be discharged causes such that when the free piston 17 is moved in a rightward direction, the pre-compression chamber 18 is further compressed, the air inside the pre-compression chamber 18 is further compressed to show a higher value and the inside of the pre-compression chamber 18 is also acted as an air spring.