Patent ID: 8973469
Filing Date: 2015-03-10
Classification: B25B

Abstract:
1. A ratchet wrench comprising: a main body provided with an operating end having a recessed surface formed in one side, an accommodating chamber and a confining chamber formed inside said recessed surface to communicate with each other, a through hole bored in another side of said operating end to communicate with said accommodating chamber, an orientating member installed at an outside of said main body; a driving gear installed in said accommodating chamber and provided with plural gear teeth, a positioning projection located at one end of said driving gear for being inserted in said through hole of said main body, an sleeve-engaging rod located at another end of said driving gear; a driven gear installed in said confining chamber and provided with plural gear teeth to engage with said teeth of said driving gear; a cover laid in said recessed surface of said main body and provided with a through hole for said sleeve-engaging rod of said driving gear to pass through; and said ratchet wrench characterized by having plural ratchet teeth formed on inner wall of said confining chamber of said main body and plural ratchet teeth formed on said gear teeth of said driven gear so that said gear teeth of said driven gear can restrictively interlock with said ratchet teeth of said confining chamber, said gear teeth of said driving gear and said gear teeth of said driven gear being formed spirally, said driven gear bored with an insert hole for being inserted with an interactive member having one end connected with said orientating member outside said main body and another end positioned on said cover, said interactive member further provided with an insert hole for being inserted with a projected bar of a pressing piece, a spring mounted around said projected bar of said pressing piece between said pressing piece and said interactive member.