| 摘要 |
<p>A tube connection structure (1) according to the present invention is configured from a first connector (2) and a second connector (3) which are fitted to each other. The first connector (2) is provided with: an outer cylinder (22); a communication part (23) in which, in a fitted state, a fluid passage (23c) enabling a fluid to circulate is formed; and an annular valve body (24) which is provided to a periphery of the communication part (23), and which, in a non-fitted state, seals an outer-cylinder opening (22a). The second connector (3) is provided with: an inner cylinder (32) which, in a fitted state, pushes in the annular valve body (24); an inside valve body which, in a non-fitted state, seals an inner-cylinder opening (32a), and which, in a fitted state, is pushed in by the communication part entering inside the inner cylinder (32) via the inner-cylinder opening (32a); and a first seal member (41) which is provided to at least an inner peripheral surface of the inner-cylinder opening (32a), and which, in a fitted state, fluid-tightly seals a space between the inner-cylinder opening (32a) and the communication part (23) inserted into the inner-cylinder opening (32a). This tube connection structure (1) is characterized in that the fluid passage (23c) is provided in a communication-part (23) section which, in a fitted state, enters inside the inner cylinder (32).</p> |
