| 摘要 |
<p>PURPOSE:To provide a small air pump possible to rotate in forward/reverse directions by decreasing shaft torque, required for rotating the pump, and roller friction. CONSTITUTION:A plurality of circular arc-shaped recessed grooves 11 in parallel to an axial line are formed in the periphery of an eccentric rotor 10 to loosely house rollers 12 in these recessed grooves, and a pump chamber is partitioned by the rollers moved to the outer in a radial direction by centrifugal force, rotor and a rotor casing 1 to suck and deliver air.</p> |
