Impact tool
AssigneeNanjing Chervon Industry Co., Ltd.
InventorsYuyi Zheng, Shaobo Liu, Shubin Tong, Haonan Du
Life of this patent
Estimating the term…
Abstract
An impact tool includes: an impact mechanism applying an impact force to an output shaft, where the impact mechanism includes an impact block driven by a motor and a hammer anvil mating with the impact block and impacted by the impact block; a transmission mechanism configured to transmit torque outputted from a drive shaft to the output shaft, where the transmission mechanism includes a multi-stage transmission assembly; and a direct current power supply powering at least the motor, where the nominal voltage of the direct current power supply is less than 18 V, and fastening torque of the output shaft on a workpiece is greater than or equal to 170 N·m.
Claims20
An impact tool, comprising:
- a motor comprising a drive shaft that rotates about a first axis;
- an output shaft that rotates about an output axis;
- an impact mechanism applying an impact force to the output shaft, wherein the impact mechanism comprises an impact block driven by the motor and a hammer anvil mating with the impact block and impacted by the impact block;
- a transmission mechanism configured to transmit torque outputted from the drive shaft to the output shaft, wherein the transmission mechanism comprises a multi-stage transmission assembly;
- and
- a direct current power supply powering at least the motor, wherein a nominal voltage of the direct current power supply is greater than or equal to 3V and less than or equal to 9V, and a fastening torque of the output shaft on a workpiece is greater than or equal to 170 N·m.
An impact tool, comprising:
- a motor comprising a drive shaft that rotates about a first axis;
- an output shaft that rotates about an output axis;
- an impact mechanism applying an impact force to the output shaft, wherein the impact mechanism comprises an impact block driven by the motor and a hammer anvil mating with the impact block and impacted by the impact block;
- a transmission mechanism configured to transmit torque outputted from the drive shaft to the output shaft, wherein the transmission mechanism comprises two stages of planet gear reduction assemblies;
- and
- a direct current power supply powering at least the motor, wherein a nominal voltage of the direct current power supply is greater than or equal to 3 V and less than or equal to 9 V, a fastening torque of the output shaft on a workpiece is greater than or equal to 170 N·m, and a distance L1 from the rear end of the housing to the front end of the output shaft is less than or equal to 135 mm.
An impact tool, comprising:
- a motor comprising a drive shaft that rotates about a first axis;
- an output shaft that rotates about an output axis;
- an impact mechanism applying an impact force to the output shaft, wherein the impact mechanism comprises an impact block driven by the motor, a hammer anvil mating with the impact block and impacted by the impact block, and a main shaft connecting the impact block to the drive shaft;
- a transmission mechanism configured to transmit torque outputted from the drive shaft to the main shaft, wherein a gear ratio of the transmission mechanism from the drive shaft to the main shaft is higher than or equal to 9;
- and
- a direct current power supply powering at least the motor, wherein a nominal voltage of the direct current power supply is greater than or equal to 3 V and less than or equal to 9 V and a fastening torque of the output shaft on a workpiece is greater than or equal to 170 N·m.
Dependencies are inferred from the claim text.