| 摘要 |
A locking mechanism ( 20 ) for locking a roller-tube ( 30 ) in its assembly ( 22 ), such as found in awning contraptions mounted on RV and other motor vehicles ( 34 ). A shaft ( 42 ) slides to-and-fro in its bore ( 44 ) extending between end walls ( 35, 36 ) of a body ( 33 ). A collar ( 49 ) at one end of shaft ( 42 ) captures the latter's motion at one end ( 50 ) of body ( 33 ). Another collar ( 53 ) disposed on shaft ( 42 ) along its length projecting beyond the opposite end ( 54 ) of body ( 33 ) also prevents escape of shaft ( 42 ) from body ( 33 ) in its other direction. Collars ( 49, 53 ) function to limit the sliding of shaft ( 42 ) back and forth as a hooking wand is applied to one or the other. A pin ( 59 ) in detent ( 60 ) seats in body ( 33 ) from its bottom wall ( 38 ) to engage a point or annular groove ( 55 ) in shaft ( 42 ) to maintain a length of a portion ( 47 ) in an elongated length ( 46 ) in shaft ( 42 ) so that portion ( 47 ) of shaft ( 42 ) engages a stop or peg ( 74 ) on the periphery ( 82 ) of an end cap ( 72 ) of roller-tube ( 30 ) to immobilize roller tube ( 30 ) from rotating. Threaded holes ( 67 ) are provided on back wall ( 39 ) of body ( 33 ) for mounting mechanism ( 20 ) to a support arm ( 28 ) to which roller-tube assembly ( 22 ) is connected.
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