Patent ID: 7654803
Filing Date: 2010-02-02
Classification: B41J

Abstract:
1. A tube pump comprising: a flexible tube in which a fluid passage is formed; an accommodating case for accommodating the flexible tube, the tube extending along an inner wall of the case, the inner wall having an opening, the tube extending to the exterior of the case through the opening, the tube having a first portion and a second portion, which are located close to each other in the vicinity of the opening; a pressing member revolving in the accommodating case, the pressing member moving from the first portion to the second portion along the flexible tube while pressing and squeezing a portion of the tube against the inner wall of the case, thereby enabling a fluid to flow from the first portion to the second portion in the fluid passage; and an assistant member provided in the vicinity of the opening of the accommodating case, the assistant member having an assistant surface, the assistant member transferring the pressing member from the second portion to the first portion via the assistant surface when the pressing member passes the vicinity of the opening of the case, wherein the assistant member is clamped by the first portion and the second portion, wherein a holding member is detachably installed in the opening for holding the first and second portions and the assistant member, wherein when the holding member is detached from the accommodating case, the holding member keeps holding the first portion, the second portion and the assistant member, and wherein the assistant member is detachable from the accommodating case.