| 摘要 |
PROBLEM TO BE SOLVED: To provide a tube joint securely capable of preventing coming-out of a tube even when water infiltrating into a holder inner part of a cylindrical main body part from the external is frozen. SOLUTION: As an end part 42 of the tube 41 is inserted into the main body part 10, a tip part of it presses a coil spring 38 inserted into a third hole 14 to be engaged to a circular surface adjacent to a fourth hole 15 to be extended in a diametric direction to compress it. In addition, the tube is slightly pulled back, and a claw part 33b of a tightening member 31 bites an outer circumferential surface at an end part of the tube, so that the tube is tightly connected to a holder 25 in the main body part. A compressed state of the coil spring pressed into the third hole is loosened, and energization force by the coil spring is applied to the tube tip side. When this tube joint receives vibration in a non-pressurized state, move of the tube is prohibited by energization force of the coil spring, thereby the tightened state by the tightening member is maintained. |
