Joint device for connecting refrigerant pipes in automotive air-conditioning system, has retaining portions which return to their initial shapes after first pipe section has been completely inserted into second pipe section

摘要

The retaining portions (14) and leg portions (11) of a ring-shaped retainer (10) are elastically and outwardly deformed when the male joint portion (22) of a first pipe section (2) is inserted into the female joint portion of a second pipe section (3). The retaining portions return to their initial shapes after the first pipe section has been completely inserted into the second pipe section.