| 摘要 |
PROBLEM TO BE SOLVED: To provide a pump having low vibration and slide resistance and having superior operability.SOLUTION: In a pump which includes a rod 10 supported reciprocatably in an axial direction while rotating, and a drive joint 20 fitted in an uneven state to the rod 10 from a back side and transmitting torque, and discharges a fluid flowing into a suction port 40a from a discharge port 40b by the rotation and reciprocation of the rod 10, the rod 10 is disposed in parallel with the drive joint 20 at an eccentric position, projections 12, 13 radially extended, are disposed on one of the rod 10 and the drive joint 20 at a part fitted in the uneven state, and the other is provided with inclined slots 21, 22 fitted to the projections 12, 13 and extended while inclined to the axial direction. The projections 12, 13 are moved along the inclined slots 21, 22 by rotating the drive joint 20, and the rod 10 is axially reciprocated while rotating in accompany with the movement. |
