公开(公告)号：EP4397438A1

公开(公告)日：2024-07-10

申请号：EP23217807.9

申请日：2023-12-19

申请人： Nanjing Chervon Industry Co., Ltd.

发明人： CHEN, Shuai ,  KE, Hongtao ,  WU, Yongkang ,  SUN, Chenwei ,  FAN, Baofeng ,  XU, Rui ,  XUE, Meng ,  TONG, Shubin ,  WU, Di ,  GOU, Jia

IPC分类号： B25B21/02 ,  B25B23/147

CPC分类号： B25B21/02 ,  B25B23/1475

摘要： An impact tool includes a controller for controlling a motor. The controller is configured to, when the direction of rotation of the motor is set to the reverse rotation direction, a drive shaft rotates at a first speed, and after an impact mechanism applies an impact force to an output shaft for a preset time, determine that a fastener is in a tightened state according to a load parameter of the output shaft and control the drive shaft to rotate at a second speed, where the second speed is greater than the first speed.