| 摘要 |
A socket wrench having multiple driving heads includes a triangular star-shape handle which consists of an upper and a lower shell. The triangular portions of the handle have respectively a protrusive driving portion. Two neighboring driving portions are connected by a side wall formed in an arched shape concaved inwards. Each driving portion holds a driving bar having a coupling head on an outer side and a ratchet on an inner side inside. A clamping box is provided that includes an upper and a lower deck in the interior center of the handle and has three pairs of detent plates in the middle to control turning direction of the ratchet. A rotary knob is provided having an actuation bar beneath to move the detent plates. Thus a plurality of driving bars which hold the coupling heads of different shapes and sizes can be held in the handle. The socket wrench thus formed can be grasped easily and change of driving direction can be accomplished rapidly.
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