| 摘要 |
PURPOSE:To improve the following performance of a piston, by reciprocating the piston with an eccentric rotation of the shaft through a rod with a pair of planes positioned at the both sides of the shaft, in a pump where an intake and exhaust valves are closed and opened alternatively to discharge a fluid with the reciprocation of the piston. CONSTITUTION:At a piston 13 housed in a cylinder 12, is furnished a rod 13 unitary to the piston 13, projecting into the inner chamber 14 of a body 11, and the rod 13 is guided sliding by a cylindrical guide 15 fixed to the boy 11. On the other hand, at the driving shaft 26a of a motor 26 fixed to the body 11, is installed a member 27 with a shaft 28 eccentric to the shaft 26a, and a ring 30 is supported rotatable by the said shaft 28 through a bearing 29. The ring 30 is placed between a pair of parallel planes 31a and 31b of a member 31 fixed at the lower end of the rod 13a, to make a piston 20 reciprocate up and down by an eccentric rotation of the shaft 28 through the rod 13a. |
