Patent ID: 8075113

Claim:
A connection mechanism comprising a first connection unit and a second connection unit placed opposite the first connection unit, wherein: the first connection unit comprises: a first cylindrical unit whose connection end has an aperture; an axis member fixed to a bottom opposite the aperture of the first cylindrical unit; a first liquid path having a first aperture formed in the bottom; a first moving member fitting to the axis member and having a moving aperture moving while sliding on an inside surface of the first cylindrical unit in the axis direction of the axis member; and an urging member for urging the first moving member toward the connection end; the second connection unit comprises: a second cylindrical unit having a second aperture whose connection end side is a bottom; a second moving member provided inside the second cylindrical unit and having a second liquid path at a position opposite the second aperture; and an urging member for urging the second moving member toward the connection end; by pushing the second cylindrical unit into the first cylindrical unit, the first moving member moves by rotating along the axis member from a first position in which a position of the moving aperture is not opposite the first aperture and the second aperture to a second position in which the position of the moving aperture is opposite the first aperture and the second aperture, and the first liquid path is linked to the second liquid path.