| 摘要 |
The shock absorber consists of a cylindrical body (101) and a telescopic hollow rod (102) forming two inner fluid chambers (103,104) which are normally isolated from one another, and a passage (110) between the two chambers which is normally closed by a valve (111). The valve is controlled by a weight (121) and a graduated spring (122) which are affected by acceleration forces and open the valve when the acceleration exceeds a set threshold level. In a variant of the design the valve can have a spring-loaded weight on each side of it, opening the valve when it is subjected to excessive acceleration, either by compression or traction. The valve can also be controlled by a distributor in the form of an inner pilot valve, and the body and rod can be normally locked together by shearing pins which are broken at a set acceleration level. <IMAGE> |
