| 摘要 |
PROBLEM TO BE SOLVED: To reduce a pressing force of a pressing part required to press a tube.SOLUTION: The device comprises: a tube 10 partially arranged in an arch shape, and having elasticity; a cam 20 rotating around a center shaft 21 positioned at a center of an arc shape of the tube 10 as a center; plural pressing parts 30 arranged radially from an arc center direction of the arc shape of the tube 10; and a guide wall 40 having an arc shape along the arc shape of the tube 10, and pressure-closing the tube 10 by nipping the tube 10 by the pressing parts 30. The cam 20 rotates, and sequentially presses one end of the pressing part 30. The pressing part 30 sequentially pressed by the cam 20 sequentially presses the tube 10 at the other end of the pressing part 30. By repeating pressure-closure and opening of the tube 10, fluid is transported in a rotation direction of the cam 20, and the other end 32 contacting the tube 10 has a projection part projecting in the same direction as a direction of swelling of the arc shape of the guide wall 40. |
