Abstract: A power tool includes an output shaft for outputting torque, a motor for driving the output shaft to rotate about a first axis, a transmission mechanism for transmitting an output of the motor to the output shaft, a gear box for containing the transmission mechanism, a sleeve for a user to operate so as to adjust a maximum output torque transmitted from the motor to the output shaft, a locating element for limiting an axial position of the sleeve, fastening elements for fixing the locating element to the gear box, and a bearing for supporting the output shaft. The locating element is formed with a containing groove for containing the bearing and locating holes formed on a bottom of the containing groove. The fastening elements are at least partially embedded in the locating holes.

Abstract: A power tool includes an output shaft for outputting torque, a transmission mechanism for driving the output shaft, a motor for driving the transmission mechanism, and a housing for containing the motor. The transmission mechanism includes a ring gear being capable of rotating relative to the housing, locking pins for limiting the rotation of the ring gear, a locking ring for limiting the locking pins to rotate with the ring gear, and biasing elements for biasing the locking pins so as to move toward the locking ring. The ring gear is formed with apertures going through the ring gear in an axial direction of the output shaft and the locking pins pass through the ring gear through the apertures and contact with the locking ring. The locking ring is formed with locking protuberances for contacting and engaging with the locking pins.

Abstract: A power tool includes a motor with a drive shaft being capable of rotating around a first axis, a housing for containing the motor, an output shaft for outputting torque, a transmission mechanism for transferring power between the drive shaft and the output shaft, and an adjusting device for adjusting ratios between the drive shaft and the output shaft. The transmission mechanism includes a first planet gear assembly including a first planet gear and a first planet carrier, a second planet gear assembly including a second planet gear and a second planet carrier, and a ring gear with inner teeth. The first and second planet gears can be engaged with the ring gear and the first and second planet gears are engaged with the first and second sun gears, respectively.

Abstract: A power tool includes an output shaft for outputting torque, a motor for driving the output shaft to rotate about a first axis, a transmission mechanism for transmitting an output of the motor to the output shaft, a gear box for containing the transmission mechanism, a sleeve for a user to operate so as to adjust a maximum output torque transmitted from the motor to the output shaft, a locating element for limiting an axial position of the sleeve, fastening elements for fixing the locating element to the gear box, and a bearing for supporting the output shaft. The locating element is formed with a containing groove for containing the bearing and locating holes formed on a bottom of the containing groove. The fastening elements are at least partially embedded in the locating holes.

Abstract: A power tool includes an output shaft for outputting torque, a transmission mechanism for driving the output shaft, a motor for driving the transmission mechanism, and a housing for containing the motor. The transmission mechanism includes a ring gear being capable of rotating relative to the housing, locking pins for limiting the rotation of the ring gear, a locking ring for limiting the locking pins to rotate with the ring gear, and biasing elements for biasing the locking pins so as to move toward the locking ring. The ring gear is formed with apertures going through the ring gear in an axial direction of the output shaft and the locking pins pass through the ring gear through the apertures and contact with the locking ring. The locking ring is formed with locking protuberances for contacting and engaging with the locking pins.

Abstract: A power tool includes a motor with a drive shaft being capable of rotating around a first axis, a housing for containing the motor, an output shaft for outputting torque, a transmission mechanism for transferring power between the drive shaft and the output shaft, and an adjusting device for adjusting ratios between the drive shaft and the output shaft. The transmission mechanism includes a first planet gear assembly including a first planet gear and a first planet carrier, a second planet gear assembly including a second planet gear and a second planet carrier, and a ring gear with inner teeth. The first and second planet gears can be engaged with the ring gear and the first and second planet gears are engaged with the first and second sun gears, respectively.