| 摘要 |
PROBLEM TO BE SOLVED: To provide a pipe connection part structure having simple construction permitting easy connection of pipes while increasing the allowable frequency of attachment/detachment of connection ports thereof. SOLUTION: A coupler 10 has a first locking pawl 13 and a second locking pawl 14 protruded obliquely to the axial inside of the coupler 10 at mutually opposite sides. When one of the connection ports 3, 4 of the pipes 1, 2 is inserted into the coupler 10, the first or second locking pawl 13 or 14 is thrust and deformed in the direction of the outer periphery of the coupler 10 by locked portion 5 or 8, and when the insertion is completed, the first or second locking pawl 13 or 14 is released from the thrust of the locked portion 5 or 8 and reset into the original condition. Then, the first or second locking pawl 13 or 14 engages with the locked portion 5 or 8 to prevent the come-off of the male side connection port 3 from the female side connection port 4. COPYRIGHT: (C)2005,JPO&NCIPI
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