| 摘要 |
PROBLEM TO BE SOLVED: To provide a bellows pump easily manufactured by reducing the number of components and preferably having a bellows which can be formed of an inexpensive material other than silicon. SOLUTION: The bellows pump 10 includes a pump body 12 with an inlet hole 18 and an outlet hole 20. A bellows member 30 preferably formed of an inexpensive material other than silicon is mounted to the pump body 12 and forms a quantitative dispensing chamber V made to communicate with the inlet hole 18 and outlet hole 20. Compressing the bellows member 30 causes a sealing web 34 thereof to contact with the inlet hole 18 and seal the same to prevent a product P within the quantitative dispensing chamber V from flowing to the inlet hole 18. The sealing web 34 cannot cover the outlet hole 20 due to the compression of the bellows member 30, and thus, the product P is dispensed through the outlet hole 20 and an elastic valve 60 within a spout 50 by the compression of the bellows member 30. The expansion of the bellows member 30 sucks the product P into the quantitative dispensing chamber V via the inlet hole 18. COPYRIGHT: (C)2007,JPO&INPIT
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