Patent ID: 8806987

Claim:
A steering device for a ratchet screwdriver comprising: a base, the base adapted to be mounted on a front end of the ratchet screwdriver, the base having a receiving hole defined therein, two receiving grooves defined in the base and respectively positioned two sides of the receiving hole for communicating with receiving hole, a moving slot comparted from receiving hole and positioned between the two receiving grooves; a ratchet rod partially received in the base, the ratchet rod including a spindle and a ratchet wheel disposed on the spindle, the ratchet wheel having teeth annularly formed thereon, a distal end of the spindle having an inserting hole defined therein for adapting to receive a tool bit, the ratchet wheel received in the receiving hole; a housing sleeved on the base, the housing having a housing hole defined therein and passing therethrough for allowing the spindle passing through the housing, the housing having a protrusion disposed on an interior thereof for inserting into the moving slot, the housing having at least one channel defined in an inner periphery thereof, the base having at least one rib extending from an outer periphery thereof for corresponding to the at least one channel in the housing, the at least one rib restricted in the corresponding channel for restricting a rotation of the base relative to the housing; and two blockers respectively received in the two receiving grooves, each blocker having unidirectional teeth formed on one end thereof for selectively engaging with the ratchet wheel and a spring engaging with the other end thereof for abutting against an inner wall of the receiving groove, each blocker having a stub extending therefrom for connecting with the spring, each blocker having a sliding surface and a guiding surface respectively formed on two adjacent sides of the teeth thereof, the sliding surface provided for abutting against an inner periphery of the receiving groove, the guiding surface provided for abutting against the protrusion; wherein when the housing is rotated relative to the base, the protrusion is moved in the moving slot and is abutted against either one of the two blockers such that one blocker is detached from the ratchet wheel and the other blocker is engaged with the ratchet wheel for selectively steering a rotatable direction of the ratchet rod.