Hydraulic buffering leg cushion

Abstract

A hydraulic buffering leg cushion is mounted to a supporting platform. The hydraulic buffering leg cushion comprises a leg cushion body, a movable element, at least one buffering damper, at least one gear, and a fixed connecting element. The leg cushion body is provided with a first receiving space. The movable element is provided with at least one rack, and is received in the first receiving space, and that a loading spring is provided therein for pressing against the leg cushion body. The at least one buffering damper is arranged in the leg cushion body, and is filled therein with damping oil. The at least one gear is sleeved to the at least one buffering damper, where the at least one gear is engaged with the at least one rack. The fixed connecting element is fixedly arranged on the movable element for connecting with the supporting platform. As such, the hydraulic buffering leg cushion makes use of the supporting force of the loading spring and the buffering structure of the at least one buffering damper, such that the hydraulic buffering leg cushion can adjust to a balance of the supporting platform automatically within an effective range, without any manual adjustment to a balance, so as to ensure stability of the supporting platform without shaking easily.

1 . A hydraulic buffering leg cushion, mounted to a supporting platform, comprising:
 a leg cushion body, provided with a first receiving space;   a movable element, provided with at least one rack, and is received in the first receiving space, and a loading spring being provided therein for pressing against the leg cushion body;   at least one buffering damper, arranged in the leg cushion body, and filled therein with damping oil;   at least one gear, sleeved to the at least one buffering damper, and engaged with the at least one rack; and   a fixed connecting element, fixedly arranged on the movable element.   
     
     
         2 . The hydraulic buffering leg cushion as claimed in  claim 1 , wherein the leg cushion body includes an upper cover and a lower cover, and the upper cover is arranged on the lower cover. 
     
     
         3 . The hydraulic buffering leg cushion as claimed in  claim 2 , wherein the lower cover is provided underneath a rubber pad. 
     
     
         4 . The hydraulic buffering leg cushion as claimed in  claim 1 , wherein the movable element is provided with at least one hook, and the leg cushion body is provided with a flange on inner surface of the leg cushion body, such that the at least one hook can engage with the flange. 
     
     
         5 . The hydraulic buffering leg cushion as claimed in  claim 1 , wherein the at least one buffering damper includes a base, an upper cover, a rotational element, and a sealing ring, and the upper cover is provided with an opening, and is disposed in the base in which a second receiving space is formed, such that the rotational element and the sealing ring are received in the second receiving space; and wherein the rotational element has its axis of rotation extended out of the opening and engaged with the gear, and the second receiving space is filled with damping oil. 
     
     
         6 . The hydraulic buffering leg cushion as claimed in  claim 1 , wherein the fixed connecting element relates to a set screw.