| 摘要 |
A reversible wrench, which includes a box body, an adapter mounted within the box body and supported on an inside annular flange in the box body, the adapter having a bottom coupling extended out the box body for holding a tool and a top ratchet, a driving block fastened to the box body on the inside above the adapter and stopped from rotary motion relative to the box body, the driving block having a bottom ratchet, which is forced into engagement with the ratchet at the adapter for enabling the adapter to be rotated with the driving block when the reversible wrench is attached to the workpiece and forced downwards, and a spring member connected between the adapter and the driving block to push the driving block apart from the adapter.
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