| 摘要 |
A quick-connect coupling including a smooth pipe (1) with a predetermined outer diameter (E), and a duct (2) connected thereto. The pipe is held in an elastomeric sleeve (4) within a housing (3) secured to the duct and having an opening (30) in which one end (10) of the tube is fitted. The inside of the sleeve defines a conduit engaged by the pipe end extending in a first axial direction (D1), and the conduit includes at least one first portion (T1) consisting of a plurality of sections (S1, S2, S3, S4, S5) each having an inner diameter that varies in said first axial direction (D1) between a high value (Ih) greater than the outer diameter of the pipe and a bottom value (Ib) smaller than said outer diameter.
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