| 摘要 |
In a snap connection system in which a shaft (16) is inserted into a tube (10) to a predetermined position, whereat co-operating surfaces on tube and shaft engage as in a laterally acting wedge, two axially spaced spring loaded balls (12) on one side of the tube urge the shaft into wedging engagement with the tube when in position. During insertion, a further spring loaded ball (13) on the opposite side of the tube adjacent the wedge apex urges the shaft out of wedging engagement with the tube. A detent (17) in shaft (16) accommodates the further ball (13) at the predetermined position, locating the shaft axially and permitting wedging. The balls are biassed by a spring sleeve (11), and a tang (14) thereof locates the sleeve on the tube. The tang may extend to the tube interior to coact with a detent in the shaft so that unclipping is necessary for disassembly. Alternatively, a spring loaded pin extending through sleeve and tube wall may accomplish the same end. |
