Shibuya Corporation

Kenshi Yoshimoto

Kosho Matsuzaki

A tube pump having a housing in which a large diameter flexible tube is arranged along a lateral wall formed to have a substantially horseshoe shape, and a roller that moves along the lateral wall of the housing. Between a blockage section which pressures and blocks the large diameter tube and a separation section shaped so as to gradually extend away from the rotation center, the lateral wall is provided with a pressure release section having an arc with a radius larger than the blockage section. While the roller is moving through the pressure release section, a communication opening is formed in the large diameter tube pressured by the roller so as to allow communication between a part positioned on an upstream side and a part positioned on a downstream side of the roller, while a size of the communication opening is maintained to constant.

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Kanazawa, Japan

Kenshi Yoshimoto