A multi-size reversible wrench

Abstract

The utility model discloses a can replace many size positive and negative wrench relates to hand tool technical field, including handle still including transmission bin, transmission bin fixed setting in one end of handle, its inside is equipped with a pair of intermeshing driving gear and driven gear, driving gear with handle fixed connection, as input shaft, driven gear extends to transmission bin outside and as wrench head, and the gear body on directly has set up one for clamping fastener's work groove, and this work groove exposes in transmission bin outside, is used for through gear engagement transmission, makes the output direction of wrench head with the rotating direction of handle always opposite, realizes steady reverse force operation, the utility model discloses through setting intermeshing driving gear and driven gear, constitutes core transmission structure, when clockwise handle, driving gear drives driven gear counterclockwise rotation, makes the wrench head output and handle turning opposite force.