One-hand bit releasing hand tool

A one-hand bit releasing hand tool, comprising:

• a hand tool main body, which comprises a wrenching member and a ratchet base, the wrenching member comprising a grip section, a third drive section connected to one end of the grip section, a mounting hole formed in and penetrating through the third drive section, a push bar being arranged on an outside surface of the third drive section, a control member being provided on a hole wall of the mounting hole and in operative connection with the push bar, the ratchet base being disposed in the mounting hole, a driven member being arranged on an outer circumferential surface of the ratchet base, the driven member being in engagement with the control member to control a rotation direction of the ratchet base, the ratchet base being inwardly recessed, in one side thereof, to form a second drive hole, an opposite side of the second drive hole being inwardly recessed to form a second receiving hole, the second receiving hole and the second drive hole being coaxial and in communication with each other, a second stepped portion being formed at an interface between a hole wall of the second drive hole and a hole wall of the second receiving hole;
• and
• a positioning and releasing assembly, which comprises a positioning member and a releasing member, the positioning member being disposed in the second receiving hole of the ratchet base and supported on the second stepped portion, the positioning applying a force to a bit received in the second drive hole to hold the bit in position, the releasing member being disposed in the second receiving hole and reciprocally movable between a positioning position and a releasing position upon being acted on by an external force;
• wherein when the bit is placed into the second drive hole, the releasing member is caused to move from the releasing position to the positioning position;
• and when the releasing member is acted upon by the external force to move from the positioning position to the releasing position, the releasing member resists the force of the positioning member so as to cause the bit to move out of and detach from the second drive hole.