| 摘要 |
A reversible ratchet screwdriver, which includes a top handle shell and a bottom handle shell fastened together, a ratchet mechanism mounted inside the handle shells, the ratchet mechanism including a substantially triangular flat block, a long tube and a short tube formed integral with top and bottom sides of the triangular flat block and longitudinally communicated with each other, three pawls respectively coupled between the triangular flat block and a toothed portion at the bottom handle shell, and three spring elements respectively connected between the triangular flat block and the pawls to force the pawls into engagement with the toothed portion at the bottom handle shell, and a double-head socket for mounting with either of two ends thereof in the long tube or short tube to hold a double-head screwdriver tip outside the handle shells for turning screws.
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