| 摘要 |
In a device for detachably fixing to each other two relatively movable parts of a device for generating compressed air, in particular a bicycle pump, a substantially cylindrical end region of the pump piston facing a bicycle saddle is designed to have a diameter enlarged relative to the part of the pump piston guided in the sleeve, the region of enlarged diameter and a free end region of the sleeve are surrounded by a union nut provided with an internal thread in an end region and the internal thread of the union nut is detachably connectable to a thread arranged on the sleeve or on the region of enlarged diameter of the pump piston, in order to design both the union nut and one of the two relatively movable parts of the seatpost with interacting stops. |
