| 摘要 |
PROBLEM TO BE SOLVED: To provide connecting structure of pipes, easily forming double structure in which a connection part is closely connected, and securely keeping the closely-connected state. SOLUTION: In the connecting structure of pipes, a male-side end part 11 of one tubular pipe 10 is inserted into a tip opening of a female-side end part 13 of another tubular pipe 12 to axially connect and integrate a pair of tubular pipes. The male side end constitutes a tapered face with the diameter of the outer peripheral face reduced toward a tip thereof, and a screw member is attached to a tip part, and a plurality of projections engaged with the screw streak of a screw member is formed to an inner wall of a female side end part. The connection pipe constituted of the plurality of tubular pipes connected and integrated by the connecting structure is used as various rod-like members. COPYRIGHT: (C)2011,JPO&INPIT
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