| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a highly endurable compact tube pump which continuously ejects fluid. <P>SOLUTION: The tube pump 1 sucks and ejects fluid L through a repetition of pressing and release of a tube 7. The tube pump includes a first pressing portion 11 and a second pressing portion 12 that have pressing pieces 12, 14 disposed holding the tube 7 in between and a pressing surface 15a and that can shift from a local clogging state to press the upstream side of the pressed regions 8, 9 held there-between to the full clogging state to press the whole of pressed regions 8, 9. The first pressing portion 11 holds the pressed region 8 of the volume V1 larger than the volume V2 of the pressed region 9 of the second pressing portion 13 and is disposed upstream side further than the second pressing portion 13. The first pressing portion 11 and the second pressing portion 13 shift alternately from the local clogging state to the full clogging state, and at least one of the first pressing portion 11 and the second pressing portion 13 is locally clogged or fully clogged when the fluid L is sucked and/or ejected. <P>COPYRIGHT: (C)2012,JPO&INPIT |
