| 摘要 |
PURPOSE: A dual cylindrical pump is provided to solve the problems of waste of manufacturing costs, generation of noise and difficulty in manufacturing by operating a pump with rotation of a single drive camshaft. CONSTITUTION: Plural links(4) are mounted on the lower portion of an inlet hole(IH) in a cylinder(2) and connected with the center of a partition of a piston(3) through a first and a second pin(P1,P2). A drive camshaft is mounted in the center of a first head(31) of the piston to be rotated with eccentricity through an additional drive unit. A grooved portion is formed on a side of the central partition of the piston, and an end of the link is mounted to the groove through the second pin. The piston is rotated centering on the second pin, following the rotation of the drive camshaft. An eccentric cam having an eccentric shaft is mounted at the end of the drive camshaft. The eccentric shaft is installed in the center of the first head of the piston. Thereby, the first head is rotated with a specific eccentric track when the camshaft is rotated. If the camshaft is rotated through the additional drive unit connected with the first head of the piston, fluid or gas is supplied through the inlet hole of the cylinder. The gas is discharged through an outlet hole(OH) via one of plural fluid chambers(21) in the cylinder.
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