| 摘要 |
A wrench extension with a socket-coupling system includes a socket extension shaft, a transmission member mounted in an axial passageway in an end of the wrench extension shaft, a ball mounted in a first transverse passageway in the end of the wrench extension shaft, and a push member mounted in a second transverse passageway in the wrench extension shaft. The transmission member includes a sliding portion that is in sliding contact with a sliding portion of the push member for urging the ball into a detent of a cavity of a socket coupled to the end of the wrench extension shaft. When the socket is subject to an axial force away from the wrench extension shaft, the transmission member is stopped by the push member to thereby prevent undesired decoupling of the socket.
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