| 摘要 |
A ratchet structure of a screwdriver, including a seat body disposed on a handle, a ratchet mechanism and an outer collar. The seat body has a substantially C-shaped stop wall axially projecting from the seat body. The stop wall defines a central receiving space and an opening. The seat body has a projecting post at the opening to divide the opening into a left split and a right split. A stem of the ratchet mechanism is fitted in the receiving space of the seat body. The ratchet mechanism includes a left dog and a right dog respectively disposed at the left and right splits of the seat body. The post is formed with a left and a right projecting sections. The middle sections of the left and right dogs are formed with left and right notches in which the left and right projecting sections are respectively cooperatively inlaid. When the left and right dogs are respectively pushed by the left and right stop faces of the outer collar, the left and right dogs swing about the projecting sections to disengage from the toothed section of the stem. Therefore, the rotational direction of the stem driven by the seat body can be controlled.
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