A ratchet transmission control mechanism for a ratcheting tool with a handle, comprising:
- a cylindrical main body from which the handle of the ratcheting tool extends, the cylindrical main body including a longitudinal hole and a first transverse hole and a second transverse hole that are communicated with the longitudinal hole, the main body further including a groove, two first transverse receptacles, and two second transverse receptacles in an outer periphery thereof;
- a pair of parallel first arcuate channels defined in the outer periphery of the main body and each including a first end that terminates in an associated said first transverse receptacle and a second end that is communicated with the groove of the main body;
- a pair of parallel second arcuate channels defined in the outer periphery of the main body and each including a first end that terminates in an associated said second transverse receptacle and a second end that is communicated with the groove of the main body;
- a spindle rotatably received in the longitudinal hole of the main body and including an end extended beyond the main body for driving a fastener, the spindle including a toothed portion disposed in the longitudinal hole of the main body;
- a substantially U-shape first elastic member including two limbs and a connecting section interconnecting between the limbs, each said limb of the first elastic member having a distal end, the limbs of the first elastic member being mounted in the first channels with the distal ends of the first elastic member securely, respectively retained in the first transverse receptacles and with the connecting section of the first elastic member extended into the groove;
- a substantially U-shape second elastic member including two limbs and a connecting section interconnecting between the limbs, each said limb of the second elastic member having a distal end, the limbs of the second elastic member being mounted in the second channels with the distal ends of the second elastic member securely, respectively retained in the second transverse receptacles and with the connecting section of the second elastic member extended into the groove;
- a first pawl mounted in the first transverse hole of the main body, the limbs of the first elastic member being extended through the first pawl such that the first pawl is biased radially inward by the first elastic member to engage with the toothed portion of the spindle and that the first pawl is biased radially outward by the first elastic member when the connecting section of the first arcuate elastic member is pressed toward the distal ends of the first elastic member;
- a second pawl mounted in the second transverse hole of the main body, the limbs of the second elastic member being extended through the second pawl such that the second pawl is biased radially inward by the second elastic member to engage with the toothed portion of the spindle and that the second pawl is biased radially outward by the second elastic member when the connecting section of the second arcuate elastic member is pressed toward the distal ends of the second elastic member;
- a hollow switch cap mounted around the main body, the switch cap including an operative member projected from an inner periphery and movable among three positions upon turning the switch cap, wherein when the operative member is in a first of the three positions, the operative member presses against the connecting section of the first elastic member such that the first pawl is disengaged from the toothed portion of the spindle while the second pawl is engaged with the toothed portion of the spindle, thereby allowing the spindle to drive a fastener along a first direction, when the operative member is in a third of the three positions, the operative member presses against the connecting section of the second elastic member such that the second pawl is disengaged from the toothed portion of the spindle while the first pawl is engaged with the toothed portion of the spindle, thereby allowing the spindle to drive the fastener along a second direction opposite to the first direction, when the operative member is in a second of the three positions, neither the connecting section of the first elastic member nor the connecting section of the second elastic member is pressed by the operative member such that the first pawl and the second pawl are both engaged with the toothed portion of the spindle, thereby allowing the spindle to drive the fastener along either the first direction or the second direction;
- and
- means for retaining the switch cap in the three positions and allowing the operative member of the switch cap to be moved to one of the three positions upon rotation of the switch cap.