Patent ID: 8770066

Claim:
A water and dust resistant ratchet wrench, comprising: a handle having a head provided with a mounting hole and a pivot hole communicated with the mounting hole; a ratchet wheel rotatably mounted in the mounting hole of the head of the handle; a direction controller pivotally mounted in the pivot hole of the head of the handle; a pawl connected with the direction controller and engaged with the ratchet wheel for being driven by the direction controller to change an engagement orientation between the pawl and the ratchet wheel so as to control a rotation direction of the ratchet wheel; and at least one O-ring sleeved onto the direction controller and abutted with a wall surface of the pivot hole of the handle; wherein the direction controller comprises a pivot portion pivotally mounted in the pivot hole of the head of the handle, a connecting portion integrally formed with the pivot portion and connected with the pawl, and a tab integrally formed with the connecting portion and partially exposed outside the pivot hole of the head for being operated to drive the pivot portion of the direction controller to rotate in the pivot hole; wherein the tab is provided at an outer periphery thereof with an annular groove in which the O-ring is installed; and wherein the connecting portion of the direction controller includes an insertion hole, and the pawl includes a tooth portion engaged with the ratchet wheel, and a shaft inserted into the insertion hole of the connecting portion of the direction controller.