| 摘要 |
A chuck with a generally cylindrical body having a tail section configured to receive a drive shaft of a driver and a nose section having an axial bore formed therein. A plurality of jaws is movably disposed with respect to the body. A threaded spindle is rotatably connected to the body and operatively engages the jaws. A first ring is fixedly mounted about the body and has a first plurality of teeth. An inner sleeve is rotatably mounted about the tail section and has an open portion. A second ring that has at least one protrusion that mates with the corresponding open portion and extends outwardly from the inner sleeve and the ring has a second plurality of teeth. An outer sleeve is placed concentrically around the inner sleeve and contains a lock groove that the protrusion of the second ring is situated inside the lock groove.
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