CO-AXIAL ADJUSTABLE DAMPING ASSEMBLY

摘要

A co-axial adjustable damping assembly includes a cylinder unit having an outer case with a cap, and an inner case having a piston unit which movably contacts inside of the outer case. A valve unit extends through the piston unit and is inserted into the inner case. A piston is connected to the valve unit and defines a first oil chamber and a second oil chamber in the inner case. A path communicates between the first and second oil chambers. A piston rod extends through the inner case, the outer case, the piston unit and the piston. A switching device is connected to the cap and has a first tube which has a cam part contacting the piston rod. A damping device has a driving rod inserted into the first tube. The driving rod is rotated to move the piston rod linearly to adjust the path.

主权项

1. An co-axial adjustable damping assembly comprising:
a cylinder unit (10) having an outer case (11) and an inner case (12) which is linearly and movably inserted into the outer case (11), the outer case (11) having a cap (13) to seal one end of the outer case (11), a piston unit (14) connected to one end of the inner case (12) and the piston unit (14) being movably in contact with inside of the outer case (11); a valve unit (20) having a first end extending through the piston unit (14) and inserted into the inner case (12), a piston (21) connected to the first end of the valve unit (20) and defining a first oil chamber (121) and a second oil chamber (122) in the inner case (12), a path (22) communicating between the first and second oil chambers (121, 122), a piston rod (23) extending through the inner case (12), the outer case (11), the piston unit (14) and the piston (21), the piston rod (23) being moved linearly; a switching device (30) connected to the cap (13) and having a first tube (31) which is rotatably located in the cap (13), a lever (32) connected to one end of the first tube (31) and located outside of the cap (13), a cam part (311) formed on an outside of the first tube (31) and located corresponding to the piston rod (23), the cam part (311) contacting the piston rod (23) to linearly move the piston rod (23) to seal and open the path (22); a damping device (40) having a first damping unit (41) which has a driving rod (42) co-axially inserted into the first tube (31) and partially exposed from the cap (13), the driving rod (42) having a notch (421) located corresponding to the piston rod (23), a ball (422) contacting the notch (421) and the piston rod (23), a knob (43) connected to an exposed end of the driving rod (42) and partially and co-axially engaged within the lever (32), the knob (43) and the driving rod (42) being simultaneously rotated to move the piston rod (23) linearly so as to adjust the path (22) at a first position (27).