Fluid subdividing and filling device, and piston and clamp used in the same

摘要

A fixing member is fixed on a structure for moving a piston forward and backward. Piston clamps rotatably face the fixing member, and an elastic body biases the piston clamps forward. A holding unit for holding detachably the rear end of the piston shaft is formed on both ends of the piston clamps. Tapers expanding gradually in the forward direction are formed on the surface opposite to the top end of the holding unit. An elastic body to which the rear end of the piston shaft is brought into contact. An opening member with tapers guides upward the tapers at the top of the piston clamp holding unit. The fixing member moves forward causing the piston clamps to move forward further. The piston shaft compresses the elastic body. The tapers at the top of the piston clamps holding unit open and the piston shaft and the piston clamps separate.