| 摘要 |
PROBLEM TO BE SOLVED: To provide a door for change operable by a small operating force in an operation time. SOLUTION: The door for changing a fluid channel comprises a door substrate section 10, a rotary shaft 11, a first seal section 12, and a second seal section 13. Each seal section is arranged for press-contact to a rib, in the fluid channel. Rigidity of an elastic material constituting the first seal section 12 is set lower than that of an elastic material constituting the second seal section 13. The door for changing the fluid channel has high sealability and can be operated by the small operating force at an operation time. COPYRIGHT: (C)2004,JPO&NCIPI
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