公开(公告)号：US12059733B2

公开(公告)日：2024-08-13

申请号：US18189802

申请日：2023-03-24

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Pengchen Wang ,  Yang Li ,  Zhongquan Xu

IPC: B23B45/02 ,  B23B45/00

CPC classification number: B23B45/02 ,  B23B45/008

Abstract: A smart power tool includes: an output shaft, an electric motor, a housing, and an adjustment assembly. The adjustment assembly is used for adjusting a working mode and outputting a mode signal. The working mode includes a drill gear mode and a wood screw mode. In the drill gear mode, a working state of the smart power tool is determined according to a set of current variables and/or a set of feature quantities and a type of a drill bit and, when the smart power tool is in a drill-through state, the electric motor is controlled to stop rotating.

公开(公告)号：US11839957B2

公开(公告)日：2023-12-12

申请号：US17215572

申请日：2021-03-29

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Pengchen Wang

IPC: B25B21/00 ,  H02P3/06

CPC classification number: B25B21/002 ,  H02P3/06

Abstract: An intelligent electric tool includes an output shaft, a motor, a transmission assembly, an adjustment assembly, a detection unit, and a controller. The output shaft outputs torsion. The motor drives the output shaft to rotate. The transmission assembly connects the motor to the output shaft. The adjustment assembly adjusts an operating mode of the intelligent electric tool, where the operating mode includes at least a metal mode. The detection unit detects a current value of the intelligent electric tool in operation. The controller determines a first detection value and a second detection value according to the current value of the intelligent electric tool in operation and control, according to the first detection value and/or the second detection value, the motor to stop rotating to control the intelligent electric tool to stop.

公开(公告)号：US20240072715A1

公开(公告)日：2024-02-29

申请号：US18489371

申请日：2023-10-18

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Hong Zhu ,  Pengchen Wang

IPC: H02P29/024

CPC classification number: H02P29/027 ,  B25F5/00

Abstract: A power tool includes a housing, an electric motor, a driver circuit, a control module, and a current detection module. The control module is configured to: acquire a phase current value of the electric motor in real time within periodic time intervals; and turn off an on-state electronic switch within remaining time of a present time interval when the acquired phase current value exceeds a preset current threshold, and turn on an electronic switch which is controlled by the control module at present to be on when a present period of the drive signal ends, where the duration of each time interval among the periodic time intervals is the same as a period corresponding to the drive signal at present, and a period of the drive signal varies randomly within a second preset period range.

公开(公告)号：US20210331298A1

公开(公告)日：2021-10-28

申请号：US17215572

申请日：2021-03-29

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Pengchen Wang

IPC: B25B21/00 ,  H02P3/06

Abstract: An intelligent electric tool includes an output shaft, a motor, a transmission assembly, an adjustment assembly, a detection unit, and a controller. The output shaft outputs torsion. The motor drives the output shaft to rotate. The transmission assembly connects the motor to the output shaft. The adjustment assembly adjusts an operating mode of the intelligent electric tool, where the operating mode includes at least a metal mode. The detection unit detects a current value of the intelligent electric tool in operation. The controller determines a first detection value and a second detection value according to the current value of the intelligent electric tool in operation and control, according to the first detection value and/or the second detection value, the motor to stop rotating to control the intelligent electric tool to stop.

公开(公告)号：US20230234146A1

公开(公告)日：2023-07-27

申请号：US18189802

申请日：2023-03-24

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Pengchen Wang ,  Yang Li ,  Zhongquan Xu

IPC: B23B45/02 ,  B23B45/00

CPC classification number: B23B45/02 ,  B23B45/008

Abstract: A smart power tool includes: an output shaft, an electric motor, a housing, and an adjustment assembly. The adjustment assembly is used for adjusting a working mode and outputting a mode signal. The working mode includes a drill gear mode and a wood screw mode. In the drill gear mode, a working state of the smart power tool is determined according to a set of current variables and/or a set of feature quantities and a type of a drill bit and, when the smart power tool is in a drill-through state, the electric motor is controlled to stop rotating.

公开(公告)号：US20220001526A1

公开(公告)日：2022-01-06

申请号：US17480174

申请日：2021-09-21

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Pengchen Wang ,  Hongwei Wang ,  Jinbiao Zhao ,  Yang Li ,  Zhongquan Xu ,  Huilong Zhou

IPC: B25F5/00 ,  H02K7/14 ,  H02K11/28 ,  H02K11/33 ,  H02K7/116 ,  H02P3/06

Abstract: A power tool includes an output shaft, a motor, a housing, a detection unit, a storage device and a control unit. The output shaft is configured to output a torsion. The motor is configured to drive the output shaft to rotate. The housing is configured to accommodate the motor. The detection unit is configured to detect an operational parameter of the power tool. The storage device is configured to store at least a first threshold corresponding to a first operating condition set and a second threshold corresponding to a second operating condition set. The control unit is communicatively connected to the detection unit and the storage device.