| 摘要 |
A wrench includes a driving head, an axle hole formed at an end of the driving head, an accommodating portion disposed in the axle hole for accommodating pawls, a control ring contained in the axle hole and having an end extended out of the axle hole and coupled to a wrench handle, and a ratchet section and a smooth section defined on an external periphery of the control ring, and the ratchet section is provided for latching the pawls to define a fixed state of latching the wrench handle with the driving head and can be rotated into a secured status, and the smooth section is provided for pushing the pawls to release the fixed state of latching the control ring, so as to allow the wrench handle to be turned with respect to the driving head for a quick rotation.
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