Abstract: A ratchet wrench includes a head having a first room for receiving a driving member, and a second room for receiving a pawl. Two recesses are defined in the inner periphery of the second room. A tip portion is located between the two recesses. The tip portion passes through the two respective centers of the first and second rooms. The pawl is controlled by a bolt and a lever. A spring and a contact member are received in a positioning hole in the rear side of the pawl. The contact member is biased by the spring and engaged with one of the two recesses to push the pawl to be engaged with the driving member. The contact member is restricted between one of the two recesses and the positioning hole so as to bear a large torque.

Abstract: A ratchet wrench includes a head having a first room for receiving a driving member, and a second room for receiving a pawl. Two recesses are defined in the inner periphery of the second room. A tip portion is located between the two recesses. The tip portion passes through the two respective centers of the first and second rooms. The pawl is controlled by a bolt and a lever. A spring and a contact member are received in a positioning hole in the rear side of the pawl. The contact member is biased by the spring and engaged with one of the two recesses to push the pawl to be engaged with the driving member. The contact member is restricted between one of the two recesses and the positioning hole so as to bear a large torque.

Abstract: A switching device of a ratchet wrench includes two engaging members respectively mounted to two rods of an operation member. The operation member has a polygonal shank which extends through the board of the head of the wrench and is connected with a switch. The operation member swings by pivoting the switch so as to control the either of the two engaging members to be engaged with the ratchet driving member. The operation member has a positioning tube, and a bead and a spring are located in the positioning tube. The bead is engaged with one of two recesses of a cover fixed to the head of the wrench when the operation member is pivoted. The cover has a flange on which a locking member is pressed. The locking member is engaged with a fixing portion in the inner periphery of the space.

Abstract: A switching device of a ratchet wrench includes two engaging members respectively mounted to two rods of an operation member. The operation member has a polygonal shank which extends through the board of the head of the wrench and is connected with a switch. The operation member swings by pivoting the switch so as to control the either of the two engaging members to be engaged with the ratchet driving member. The operation member has a positioning tube, and a bead and a spring are located in the positioning tube. The bead is engaged with one of two recesses of a cover fixed to the head of the wrench when the operation member is pivoted. The cover has a flange on which a locking member is pressed. The locking member is engaged with a fixing portion in the inner periphery of the space.