PIPE CONNECTION STRUCTURE AND PIPE UNIT USED FOR THE PIPE CONNECTION STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a pipe connection structure capable of easily connecting a pipe in a pipe drop-off prevented state while using a lock key even in a state where a work space cannot be secured around the pipe, and a pipe unit used for the pipe connection structure.;SOLUTION: In a state where an inserting port 3 is fitted to a receiving port 2 in such a manner that a lock key insertion space 5 is formed from a first lock key groove 21 that is annularly provided along an inner peripheral surface of the receiving port 2 and a second lock key groove 31 that is annularly provided along an outer peripheral surface of the inserting port 3, a linear lock key 4 is inserted from the inside of the inserting port 3 into the lock key insertion space 5 through a lock key insert hole 32 that is opened at a position facing the second lock key groove 31 on an inner wall of the inserting port, such that drop-off is prevented by the lock key 4.;SELECTED DRAWING: Figure 4;COPYRIGHT: (C)2017,JPO&INPIT