| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint member applied to a portion interconnecting ventilation passages for ventilation from one to another and maintaining high sealing properties while exhibiting superior coming-off prevention effect in a connected state.SOLUTION: A joint member comprises: a fixing structure 2a fixable to a fixed part 4p of one ventilation system 4, a connection structure 2b having elasticity connectable to a connected part 6p of another ventilation system 6; and a communication passage 2c for bringing ventilation passages into communication with each other. The connection structure is provided with an engagement protrusion 2e continuously protruding in a protruding shape along a circumferential direction and a sealing protrusion 2f protruding in a protruding shape from the engagement protrusion. The engagement protrusion is engaged with an annular recess 6g of the connected part while the connection structure is connected to the connected part by a fastening member 8, and the connection structure is thereby maintained in a coming-off prevention state with respect to the connected part. The sealing protrusion is crushed between the engagement protrusion and the annular recess and is brought into close contact with the annular recess, and a gap between the connection structure and the connected part is thereby maintained in a sealed state. |
