SELF-LOCKING DEVICE OF ELECTRIC TOOL OUTPUT SHAFT
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United States of America Patent
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app pub date -
Oct 6, 2016
filing date -
Oct 6, 2016
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Abstract
A self-locking device of an electric tool output shaft includes a main shaft, a power output disk, a stop ring, and a plurality of self-locking pins. An upper end surface of the power output disk is provided with a plurality of drive blocks. A bottom of the main shaft is inserted into the power output disk. An inner side of the power output disk is provided with a plurality of drive surfaces. An outer wall of a lower end of the main shaft is provided with a plurality of driven surfaces and a plurality of self-locking surfaces. The main shaft has the driven surfaces to lean against the drive surfaces and the power output disk to accomplish a power output function, and further has the self-locking surfaces to lean against the self-locking pins to accomplish a self-locking function.
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