| 摘要 |
PURPOSE: To enhance the adhesion between mutual contact parts, and satisfactorily follow the relative angle, even when caused, between the tube axes of both tube bodies by forming a protruding spherical surface on the outside of the tube end side surface of the swollen part of one tube body, and bringing the extended flare part on the end part of the other tube body into linear contact with it. CONSTITUTION: A radially extended flare part 4A provided on the tube end of one tube body 3 is brought into contact with a swollen part 2A provided on the tube encl of the other tube body 1, the contact part is held by a clamp 37 having a substantiallyΩ-shaped section from the outer circumference to mutually connect both the tube bodies 1, 3. In such a tube fitting, the swollen part 2A is made into an outward protruding spherical form, and the flare part 4A is made into a form extended so as to have a linear section. The swollen part 2,A and the flare part 4A are pressed inward and held by two bent part streaks 34, 34 between the mountain part 30 and collar part 31 of the clamp 27, and the contact line of the clamp 27 with the flare part 4A is approached to the contact line of the swollen part 2A with the flare part 4A to enhance the sealing property.
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