| 摘要 |
The invention relates to a locking device comprising a fixed bushing (3), which accomodates an axle (1) having some longitudinal holes (k) in correspondence with the longitudinal holes (h) practiced in the bushing (2), the profiled small pistons (4) gliding inside said holes, being supported by springs (6) for returning to the initial position after having been operated with the small pistons (15) mounted in the key body (14), said profiled small pistons (4) being provided with some recesses (f) which have a variable position in respect of the end, and which allow to operate the locking device when they are positioned in front of the profiled inner surface (g) of the fixed bushing (3).
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