The present disclosure is a screwdriver. A rotating seat includes a turntable and a plurality of locking blocks. A driving rod set includes a driving rod and a ratchet gear, and the ratchet gear is located in the turntable. A retaining set includes a tooth block and an elastic piece. The tooth block includes a plurality of teeth, and the elastic piece abuts a driving plate and the tooth block. A driving seat set includes a driving seat and a positioning set, and the positioning set includes a spring and a positioning piece. A locking block is inserted between the tooth block and the ratchet gear, so that the locking tooth is locked or separated from the ratchet gear.

The present disclosure is a screwdriver. A rotating seat includes a turntable and a plurality of locking blocks. A driving rod set includes a driving rod and a ratchet gear, and the ratchet gear is located in the turntable. A retaining set includes a tooth block and an elastic piece. The tooth block includes a plurality of teeth, and the elastic piece abuts a driving plate and the tooth block. A driving seat set includes a driving seat and a positioning set, and the positioning set includes a spring and a positioning piece. A locking block is inserted between the tooth block and the ratchet gear, so that the locking tooth is locked or separated from the ratchet gear.

A one-hand bit releasing hand tool includes a hand tool main body having a first drive section, which has a first drive hole and a receiving hole with a stepped portion arranged therebetween; and a positioning and releasing assembly, which includes a positioning member disposed in the receiving hole and supported on the stepped portion to apply an action force on and thus position a bit placed into the first drive hole and a releasing member disposed in the receiving hole and reciprocally movable between a positioning position and a releasing position. When the bit is placed into the first drive hole, the releasing member moves from the releasing position to the positioning position; and when the releasing member is moved from the positioning position to the releasing position, the releasing member resists the action force of the positioning member to release the bit.

A one-hand bit releasing hand tool includes a hand tool main body having a first drive section, which has a first drive hole and a receiving hole with a stepped portion arranged therebetween; and a positioning and releasing assembly, which includes a positioning member disposed in the receiving hole and supported on the stepped portion to apply an action force on and thus position a bit placed into the first drive hole and a releasing member disposed in the receiving hole and reciprocally movable between a positioning position and a releasing position. When the bit is placed into the first drive hole, the releasing member moves from the releasing position to the positioning position; and when the releasing member is moved from the positioning position to the releasing position, the releasing member resists the action force of the positioning member to release the bit.

Disclosed is a manual tool outputting torque bidirectionally. The manual tool includes a handle (100), a main shaft (200), a transmission device (300), a ratchet tooth device (400) and a ratchet wheel switching device (500), wherein when a ratchet wheel switching ring (501) of the ratchet wheel switching device (500) is located at a clockwise position, no matter whether the handle (100) rotates in a clockwise direction or in an anticlockwise direction, the main shaft (200) rotates in the clockwise direction to output torque from the handle (100); when the ratchet wheel switching ring (501) of the ratchet wheel switching device (500) is located at an anticlockwise position, no matter whether the handle (100) rotates in the clockwise direction or in the anticlockwise direction, the main shaft (200) rotates in the anticlockwise direction to output torque from the handle (100); and when the ratchet wheel switching ring (501) of the ratchet wheel switching device (500) is located at a fixed position, the main shaft (200) and the handle (100) rotate in the same direction to output torque from the handle (100), with the output torque being large. The manual tool outputting torque bidirectionally can output the torque by bidirectional rotation of the handle, with the output torque being large, while torque output by an existing screwdriver having bidirectional output is small.

Disclosed is a manual tool outputting torque bidirectionally. The manual tool includes a handle (100), a main shaft (200), a transmission device (300), a ratchet tooth device (400) and a ratchet wheel switching device (500), wherein when a ratchet wheel switching ring (501) of the ratchet wheel switching device (500) is located at a clockwise position, no matter whether the handle (100) rotates in a clockwise direction or in an anticlockwise direction, the main shaft (200) rotates in the clockwise direction to output torque from the handle (100); when the ratchet wheel switching ring (501) of the ratchet wheel switching device (500) is located at an anticlockwise position, no matter whether the handle (100) rotates in the clockwise direction or in the anticlockwise direction, the main shaft (200) rotates in the anticlockwise direction to output torque from the handle (100); and when the ratchet wheel switching ring (501) of the ratchet wheel switching device (500) is located at a fixed position, the main shaft (200) and the handle (100) rotate in the same direction to output torque from the handle (100), with the output torque being large. The manual tool outputting torque bidirectionally can output the torque by bidirectional rotation of the handle, with the output torque being large, while torque output by an existing screwdriver having bidirectional output is small.

A ratcheting screwdriver assembly includes a handle and a lever that is pivotally disposed on the handle. The lever is urgeable into an engaged position and the lever is biased into a disengaged movement. A shaft is rotatably disposed in the handle. A plurality of bits is provided and a respective one of the bits is insertable into the shaft to engage a respective type of fastener. A direction selector is movably integrated into the lever and the direction selector is in mechanical communication when the shaft. The direction selector is positionable in a tightening condition to tighten the fastener when the lever is urged into the engaged position. The direction selector is positionable in a loosening condition to loosen the fastener when the lever is urged into the engaged position.

A ratcheting screwdriver assembly includes a handle and a lever that is pivotally disposed on the handle. The lever is urgeable into an engaged position and the lever is biased into a disengaged movement. A shaft is rotatably disposed in the handle. A plurality of bits is provided and a respective one of the bits is insertable into the shaft to engage a respective type of fastener. A direction selector is movably integrated into the lever and the direction selector is in mechanical communication when the shaft. The direction selector is positionable in a tightening condition to tighten the fastener when the lever is urged into the engaged position. The direction selector is positionable in a loosening condition to loosen the fastener when the lever is urged into the engaged position.

A screwdriver for driving a screw in bone includes a first body configured to engage a tulip of the screw, a first central bore extending through the first body, a second body having a second central bore extending through the second body and an external surface having a spline member positioned at least partially within the cavity, an inner shaft configured to drive a screw into bone and being rotatably coupled with the second body, a spring-biased pawl engageable with the spline member of the second body, a collar rotatable relative to the first body and the second body and having a cammed inner surface, when the collar is rotated in a first direction about the first body, the cammed inner surface pushes the spring-biased pawl into engagement with the spline member to rotatably couple the first body and the second body.

A screwdriver for driving a screw in bone includes a first body configured to engage a tulip of the screw, a first central bore extending through the first body, a second body having a second central bore extending through the second body and an external surface having a spline member positioned at least partially within the cavity, an inner shaft configured to drive a screw into bone and being rotatably coupled with the second body, a spring-biased pawl engageable with the spline member of the second body, a collar rotatable relative to the first body and the second body and having a cammed inner surface, when the collar is rotated in a first direction about the first body, the cammed inner surface pushes the spring-biased pawl into engagement with the spline member to rotatably couple the first body and the second body.