Patent ID: 8613606

Claim:
A bellows pump having: a pump body comprising a suction path and a discharge path for a to-be-transported fluid; a bellows which is placed in a state where one end is airtightly fixed to said pump body to form a closed space with respect to said pump body; and an actuation plate which is attached to an other end of said bellows so as to cause said bellows to expand and contract with respect to said pump body, wherein said bellows is integrally formed as a single piece with said other end, a thickness of a peripheral portion of said other end of said bellows is larger than a thickness of a center portion of said other end of said bellows, the peripheral portion of said other end of said bellows is in contact with the actuation plate, the center portion of said other end of said bellows forms a recessed portion within said other end of said bellows and an airtight chamber portion is formed in the recessed portion and among the peripheral portion of said other end of said bellows, the center portion of said other end of said bellows, and the actuation plate, the bellows being made of a fluorine resin, and the center portion of said other end of said bellows is elastically deformably configured so as to enable said airtight chamber portion to expand and contract.