| 摘要 |
A tube pump including a housing, a tube, a rotor, and a pressing member is disclosed. The tube has a section that is arranged in the housing in such a manner as to annularly extend along an inner circumferential surface. The rotor has a cam surface. The pressing member has a main body that selectively presses the tube toward the inner circumferential surface and a shaft that extends from the main body and contacts the cam surface. During rotation of the rotor, the pressing member moves, with the shaft contacting the cam surface, along the inner circumferential surface while pressing the tube. The shaft has a contact part that contacts the cam surface, and is formed in such a manner that the frictional coefficient of the shaft is lower than the frictional coefficient of the main body at least in the contact part.
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