| 摘要 |
PROBLEM TO BE SOLVED: To provide a pump which can reduce labor of manufacturing work. SOLUTION: In this pump having a housing (outer cylindrical body) 101, a pressure feed member (column body) 103 contained in the housing 101 and having the same axis as that of the housing 101, and an interval part (pump part) 114 for guiding a fluid from one end in the axial direction of the press feed member 103 to an interval between an inner circumferential face of the housing 101 and an outer circumferential face of the pressure feed member 103 and for pressure feeding the fluid to the other end in the axial direction of the pressure feed member 103 by relative rotation of the housing 101 and the pressure feed member 103, a cylindrical member (cylindrical member on the column body side) 120 made of a resin and having a screw groove formed on an outer circumferential wall is provided on the outer circumferential face of the pressure feed member 103, and a cylindrical member (cylindrical member on the outer cylindrical body side) 121 made of a resin and having a screw groove formed on an inner circumferential wall is provided on the inner circumferential face of the housing 101.
|
