| 摘要 |
[Problem] A seal structure for a flow-path connection part is provided which enables respective centers of a flow path and a gasket to be aligned easily without high dimensional accuracy (with normal dimensional accuracy). [Solution] In a seal structure for a flow-path connection part including a pair of flanges arranged to face each other, the seal structure comprises a gasket having protrusions provided symmetrically on front and back sides of the gasket at an outer periphery thereof or near the outer periphery, and flanges each having a receiving groove provided annularly in a connected surface thereof, wherein the receiving groove is wider than the protrusion and has an arc-shaped deepest portion against which a top portion of the protrusion abuts, and the top portion of the protrusion has a curved surface formed such that the curvature of the top portion is greater than or equal to the curvature of the deepest portion of the receiving groove. Also provided are a liquid ejection device and a liquid storage container each including the seal structure for the flow-path connection part. |
