Abstract: A quick-release screwdriver structure includes a tool holder and a tool head embedded in a head portion of the tool holder. A fixing seat is sleeved outside the tool head; an inner wall of the fixing seat is provided with a notch, and a bottom surface of the notch is an inclined surface; a steel ball connected to a release ring is installed in the notch, and the steel ball contacts the tool head; and a movement of the release ring will drive the steel ball to move along a longitudinal direction of the bottom surface of the notch so as to lock or release the tool head. A new locking assembly is designed to act on a surface of the tool head so as to achieve locking and disassembly of the tool head.

Abstract: A two-way ratchet screwdriver includes a handle, a main shaft acting on a working end, a ratchet seat, and a reversing seat. Two ends of the ratchet seat are provided with an upper ratchet head and a lower ratchet head, respectively. The upper ratchet head has the same structure as the lower ratchet head and is fixedly connected to the handle. The upper ratchet head is provided with a circle of wheel facing teeth and a circle of ratchet teeth. The wheel facing teeth of the upper and lower ratchet heads are connected by pinions. A periphery of the reversing seat is mounted with at least one set of a forward pawl and an inverse pawl passing through the ratchet seat. The reversing seat is switched to rotate to drive the forward pawl or inverse pawl to act on the ratchet teeth of the upper and lower ratchet heads.

Abstract: An external tooth type ratchet screwdriver includes a handle and a ratchet head, the handle is provided with a ratchet seat, a first pawl and a second pawl; the ratchet head is of a round-bar shape and passes through the center of the ratchet seat; the middle part of the outer surface of the ratchet head is provided with teeth; one end of the inner circle of the first pawl is provided with a ratchet teeth structure; the second pawl has the same structure with the first pawl; the end surface of the ratchet seat is eccentrically provided with a circle of annular groove, and one end of the annular groove is cut off, and arc-shaped barrier strips are oppositely arranged on a cutoff; installation seats are formed between the wall of the ratchet seat and the arc-shaped barrier strips; a reversing cover is clamped outside the ratchet seat.