| 摘要 |
An adaptor ( 45 ) for converting to a push-to-connect tube fitting/port a standard tube fitting/port body ( 10, 110, 210, 310, 410, 510, 610 ) having a threaded portion ( 11 ) for threaded attachment of a nut/plug ( 12 ), comprises a coupling nut/plug ( 12, 112, 212, 312, 412, 512, 612 ) having an axially inner threaded end portion for threaded attachment to the threaded portion ( 11 ) of the fitting/port body ( 10 ); a tube sealing member ( 15, 115, 215, 315, 415, 515, 615 ) contained within the nut/plug ( 12 ) for sealing to a tube ( 19 ) having a locking surface ( 22 ) spaced from the end of the tube ( 19 ); and a retention device ( 23 ) retained in the nut/plug ( 12 ), which nut/plug ( 12 ) has at an axially outer end thereof a central opening through which the tube ( 19 ) can be inserted into the coupling nut/plug ( 12 ), whereby the locking surface ( 22 ) can be engaged by the retention device ( 23 ) to prevent axial withdrawal of the tube ( 19 ) from the coupling nut/plug ( 12 ) once inserted; wherein sealing and retention of the tube ( 19 ) is effected within the confines of the coupling nut/plug ( 12 ) and separate from and without requiring modification of the standard tube fitting/port body ( 10 ).
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