| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact tube pump which stably and uniformly press- feeds a predetermined amount of liquid by preventing a tube from getting jammed between a roller and a roller retaining member. SOLUTION: A plurality of rollers 16 are disposed at equal intervals in the circumferential direction on the roller retaining member 20, and a step 21 is formed on the roller retaining member 20 for fitting the ends of each of the rollers 16 thereinto, so that when the roller retaining member 20 turns in the predetermined direction and the tube 7 becomes biased in regards to the rollers 16, the roller retaining member 20 restricts the movement of the tube 7 in the sliding direction to stop the tube 7 from moving to the edges of the rollers 16, thereby preventing the tube 7 from getting jammed between the rollers 16 and the roller retaining member 20. COPYRIGHT: (C)2004,JPO
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