| 摘要 |
PROBLEM TO BE SOLVED: To provide a pump, in which a rotor is hardly pushed against an inner wall of a side wall member even if a rotational shaft is inclined with respect to a housing. SOLUTION: The pump comprises: a housing; a rotor 30 whose inner face has a female side fitting part 31 including teeth 32 and grooves 33 and which is housed in the housing; a rotational shaft 40 whose outer face has a male side fitting part 41 including teeth 42 and grooves 43, which is inserted into the rotor 30, whose male side fitting part 41 is meshed with and fitted to the female side fitting part 31, and which rotatably supports the rotor 30 and rotates the rotor 30 by a driving force from the outside of the housing; and an inclination permitting clearance 50 which is formed between mutually opposed tips and groove bottoms in a fitting part of the rotational shaft 40 and the rotor 30 so that the clearance expands in a radial direction of the rotor 30 toward both end face sides of the rotor 30 to permit mutual inclination of an axis of the rotational shaft 40 and an axis of the rotor 30. COPYRIGHT: (C)2006,JPO&NCIPI
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