| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint structure capable of sufficiently realizing water tightness between a flexible joint and ribs even when stress is exerted between a pipe with the ribs and an attaching pipe. SOLUTION: This connecting structure 1 comprises the pipe 2 with the ribs, the attaching pipe 3, and the water cut-off flexible joint 4, and the connecting hole 2a of the pipe 2 with the ribs is connected with the attaching pipe 3 through the water cut-off flexible joint 4. In the joint structure 1, the water cut-off flexible joint 4 has a flexible joint body 5, a plate like water cut-off member 6 and a rigid presser cover 7. The joint body 5 comprises a cylindrical portion 5a closely contacting to an outer periphery of the attaching pipe 3, and a saddle portion 5b protruding outwardly from the cylindrical portion 5a and overhanging on ribs 2b around the connecting hole 2a. The water cut-off member 6 is arranged under the saddle portion 5b to envelop the connecting hole 2a. The water cut-off member 6 is made of soft rubber material having rubber hardness of 0 to 5 (type A Durometer). The presser cover 7 is placed on an outer surface of the saddle portion 5b, and the presser cover 7 presses the saddle portion 5b and the water cut-off member 6 to the pipe 2 with ribs. The water cut-off member 6 is contracted and deformed to burry the ribs, and the interval between the saddle portion 5b and the pipe 2 with the ribs are water-tightened.
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