Tube clamp structure of tubing pump

A tube clamp structure of a tubing pump, comprising

• a clamp device that closes a tube attached and detached to and from a pump body, the clamp device including:
• a first holding piece;
• a second holding piece engaged with the first holding piece in a manner to approach and separate therefrom;
• and an urging member for urging the first and the second holding pieces in approaching directions, being configured to hold and deform the tube between the first and the second holding pieces for closing, and being detachably attached to the pump body, wherein
• the pump body is provided with an door that is openable and closable,
• the first holding piece and the second holding piece are configured that, when both of an operation part of the first holding piece and an operation part of the second holding piece located on one side with a first fulcrum being a boundary are closed, both of a holding part of the first holding piece and a holding part of the second holding piece located on another side with the first fulcrum being the boundary are opened,
• the urging member is provided to urge both of the holding parts of the first and second holding pieces in closing directions, and
• the operation part of the second holding piece is pushed to a first holding piece side by the door that is being closed, so as to open a space between both of the holding parts of the first and second holding pieces in a state that the first holding piece is fixed to the pump body,
• a second fulcrum that can attach and detach the first holding piece to and from the pump body and supports the first holding piece to rotate with respect to the pump body for a specified amount is provided between the pump body and a portion on a holding part side of the first fulcrum in the first holding piece,
• after the first holding piece is attached to the pump body and rotates for the specified amount by the second fulcrum, the operation part of the second holding piece is pushed to the first holding piece side by the door that is being closed, the second holding piece rotates with the first fulcrum, and the space between both of the holding parts of the first and second holding pieces is opened.