Abstract: A ratchet wrench mainly includes a main body installed with a driving gear and a driven gear respectively having teeth formed spirally and engaged with each other. A confining chamber in the main body has an inner wall formed with ratchet teeth able to restrictively lock with ratchet teeth formed on the teeth of the driven gear. An interactive member is installed in an insert hole of the driven gear, with one end connected with the orientating member and another end positioned on the cover. A pressing piece is fixed on the interactive member, confined in the insert hole of the driven gear. A spring is located between the pressing piece and the driven gear. By switching the orientating member, the driving gear can easily change rotating direction, with a strong locking effect.

Abstract: A ratchet wrench mainly includes a main body installed with a driving gear and a driven gear respectively having teeth formed spirally and engaged with each other. A confining chamber in the main body has an inner wall formed with ratchet teeth able to restrictively lock with ratchet teeth formed on the teeth of the driven gear. An interactive member is installed in an insert hole of the driven gear, with one end connected with the orientating member and another end positioned on the cover. A pressing piece is fixed on the interactive member, confined in the insert hole of the driven gear. A spring is located between the pressing piece and the driven gear. By switching the orientating member, the driving gear can easily change rotating direction, with a strong locking effect.

Abstract: A ratchet wrench includes a main body provided with a driving gear and a driven gear and having a receiving groove disposed with ratchet teeth on the inner wall. The driving gear is ball-shaped and has the outer wall of each gear tooth forming an arc-shaped surface, and a concave surface is formed between every two gear teeth of the driven gear to match the arc-shaped surface of the gear teeth of the driving gear. Each gear tooth of the driven gear is provided with plural ratchet teeth to be engaged with the ratchet teeth of the receiving groove. An interaction member is received inside the driven gear, having one end connected with an orientating member and another end positioned on a cover plate. A pressing piece is fixed on the interactive member and a spring is positioned between the pressing piece and the interactive member.