Steering device for a ratchet screwdriver

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, one receiving groove having a blocking wall extending therefrom for dividing the receiving groove into a first groove and a third groove, the other receiving groove having a blocking wall extending therefrom for dividing the other receiving groove into a second groove and a fourth groove;
• two moving slots respectively comparted from receiving hole, one moving slot positioned between the first and second grooves, the other moving slot positioned between the third and fourth 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;
• four blockers respectively received in the first, second, third, and fourth 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;
• and
• 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 two protrusions disposed on an interior thereof for respectively inserting into the two moving slots;
• wherein when the housing is rotated relative to the base, the protrusions are respectively moved in the moving slots and are abutted against the two blockers in the first/second and fourth/third grooves to be detached from the ratchet wheel such that and the other blockers in the second/first and third/fourth grooves are engaged with the ratchet wheel for selectively steering a rotatable direction of the ratchet rod.