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1. 发明授权

US11999240B2 Riding lawn mower 有权
公开(公告)号：US11999240B2
公开(公告)日：2024-06-04
申请号：US17556049
申请日：2021-12-20
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： Dezhong Yang , Xiubo Dai , Lei Wang , Wenqi Zhen
IPC分类号： B60L15/20 , A01D34/00 , A01D69/02 , H02P21/12 , H02P21/18 , H02P21/22 , A01D34/66 , A01D34/78 , A01D101/00
CPC分类号： B60L15/20 , A01D34/006 , A01D69/02 , H02P21/12 , H02P21/18 , H02P21/22 , A01D34/66 , A01D34/78 , A01D2101/00 , B60L2240/429 , B60L2240/461
摘要： A riding lawn mower includes a running assembly, a power output assembly, a power supply device, a driver circuit, an operating device, and a control module. The running assembly includes running wheels and a first motor for driving the running wheels. The operating device is configured to set at least one of target torque or a target rotational speed of the first motor. The control module is configured to output a control signal to the driver circuit to make an input current or an input voltage of the first motor vary with a rotor position of the first motor and make an actual torque of the first motor reach or basically reach the target torque within a preset time.

2. 发明申请

US20220124972A1 RIDING LAWN MOWER AND CONTROL METHOD THEREOF 有权
公开(公告)号：US20220124972A1
公开(公告)日：2022-04-28
申请号：US17570751
申请日：2022-01-07
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： Xiubo Dai , Lei Wang
IPC分类号： A01D34/00 , A01D34/64 , A01D34/78 , B62D11/00
摘要： A riding lawn mower includes a seat, a power output assembly, a walking assembly, and a control assembly. The power output assembly includes a mowing element and a power output motor configured to drive the mowing element to output power. The walking assembly includes wheels driving the riding lawn mower to walk on a ground, walking motors configured to drive the wheels, and walking controllers controlling the walking motors, where the wheels include driving wheels. An operation assembly includes an electronic steering wheel and a position sensor, the position sensor is disposed in the electronic steering wheel and configured to detect a rotation operation action of a user on an operation member, and a central controller is communicatively connected to the position sensor, acquires a rotation operation instruction, and controls the driving wheels to actively travel at different speeds for steering through the walking controllers.

3. 发明申请

US20220111737A1 RIDING LAWN MOWER 有权
公开(公告)号：US20220111737A1
公开(公告)日：2022-04-14
申请号：US17556049
申请日：2021-12-20
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： Dezhong Yang , Xiubo Dai , Lei Wang , Wenqi Zhen
IPC分类号： B60L15/20 , A01D34/00 , A01D69/02 , H02P21/12 , H02P21/18 , H02P21/22
摘要： A riding lawn mower includes a running assembly, a power output assembly, a power supply device, a driver circuit, an operating device, and a control module. The running assembly includes running wheels and a first motor for driving the running wheels. The operating device is configured to set at least one of target torque or a target rotational speed of the first motor. The control module is configured to output a control signal to the driver circuit to make an input current or an input voltage of the first motor vary with a rotor position of the first motor and make an actual torque of the first motor reach or basically reach the target torque within a preset time.

4. 发明授权

US11439059B2 Grass trimmer and control method of grass trimmer 有权
公开(公告)号：US11439059B2
公开(公告)日：2022-09-13
申请号：US17357568
申请日：2021-06-24
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： Xiubo Dai
IPC分类号： A01D34/416 , A01D34/78
摘要： A grass trimmer includes a grass trimmer head, a brushless motor, a drive circuit, and a controller. The grass trimmer head includes a spool and a head housing. The spool is configured to wind a grass trimmer rope. The head housing is configured to accommodate the spool. The grass trimmer has an automatic winding mode. In the automatic winding mode, the brushless motor drives at least one of the spool and the head housing so that the spool and the head housing rotate relatively and the grass trimmer rope is automatically wound onto the spool. The controller is configured to: in the automatic winding mode, output a control signal to the drive circuit according to at least one of the given voltage and the given current so that the rotation speed of the brushless motor is basically constant.

5. 发明授权

US11258389B2 Power tool and control method thereof 有权
公开(公告)号：US11258389B2
公开(公告)日：2022-02-22
申请号：US17015852
申请日：2020-09-09
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： Yanqing Xu , Hongwei Wang , Xiaogang Ding , Tiantian Yin , Dezhong Yang , Xiubo Dai , Wenqi Zhen
IPC分类号： H02P21/10 , H02P21/18 , H02P21/22 , B25F5/02 , H02P27/12
摘要： A controller of a power tool is configured to, based on a sampled current of a motor of the power tool, output control signals that change with a change of a position of a rotor of the motor to control a drive circuit of the power tool such that an input voltage and/or a current of the motor changes approximately in a sine wave.

6. 发明授权

US11172604B2 Riding lawn mower lap bar position detection 有权
公开(公告)号：US11172604B2
公开(公告)日：2021-11-16
申请号：US17003649
申请日：2020-08-26
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： Dezhong Yang , Jicun Cai , Xiubo Dai , Zhen Wang , Toshinari Yamaoka , Dingming Meng
IPC分类号： A01D34/00 , A01D34/64 , A01D34/69 , A01D69/02 , G01D5/14 , G01D5/16 , G05G1/015 , G05G1/04 , G05G9/047 , A01D101/00 , G01D5/12
摘要： A riding lawn mower includes a chassis, a power output assembly, a walking assembly, a power supply device, a control module, and an operating apparatus. The operating apparatus includes at least one bracket, an operating lap bar assembly, a pivoting assembly, and a position detecting module. The pivoting assembly mounts the operating lap bar of the operating lap bar assembly on the bracket. The operating lap bar can rotate around different positions in a first direction F1 and/or a second direction F2. The position detecting module includes a magnetic element and a magnetic sensor. The magnetic element is provided on the pivoting assembly or the bracket and the magnet sensor is spaced from the magnetic element so that the magnetic element and the magnetic sensor can generate a relative movement for detecting the position of the operating lap bar in the first direction F1 and/or the second direction F2.

7. 发明授权

US11812688B2 Riding lawn mower and operating apparatus with position detection for the same 有权
公开(公告)号：US11812688B2
公开(公告)日：2023-11-14
申请号：US17241358
申请日：2021-04-27
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： Dezhong Yang , Jicun Cai , Xiubo Dai , Zhen Wang , Toshinari Yamaoka , Dingming Meng
IPC分类号： A01D34/00 , A01D34/64 , A01D34/69 , A01D69/02 , G01D5/14 , G01D5/06 , G05G1/015 , G05G1/04 , G05G9/047 , A01D101/00 , G01D5/12 , B60L50/64 , B60K1/04 , B60K1/00 , B60L53/80
CPC分类号： A01D34/006 , A01D34/64 , A01D34/69 , A01D69/02 , G01D5/06 , G01D5/145 , G05G1/015 , G05G1/04 , G05G9/047 , A01D2101/00 , B60K1/00 , B60K1/04 , B60K2001/0455 , B60K2001/0488 , B60L50/64 , B60L53/80 , B60L2200/40 , G01D5/12 , G01D5/142 , G05G2009/04755
摘要： A riding lawn mower includes a chassis, a power output assembly, a walking assembly, a power supply device, a control module, and an operating apparatus. The operating apparatus includes at least one bracket, an operating lap bar assembly, a pivoting assembly, and a position detecting module. The pivoting assembly mounts the operating lap bar of the operating lap bar assembly on the bracket. The operating lap bar can rotate around different positions in a first direction F1 and/or a second direction F2. The position detecting module includes a magnetic element and a magnetic sensor. The magnetic element is provided on the pivoting assembly or the bracket and the magnet sensor is spaced from the magnetic element so that the magnetic element and the magnetic sensor can generate a relative movement for detecting the position of the operating lap bar in the first direction F1 and/or the second direction F2.

8. 发明申请

US20210321560A1 GRASS TRIMMER AND CONTROL METHOD OF GRASS TRIMMER 有权
公开(公告)号：US20210321560A1
公开(公告)日：2021-10-21
申请号：US17357568
申请日：2021-06-24
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： Xiubo Dai
IPC分类号： A01D34/416 , A01D34/78
摘要： A grass trimmer includes a grass trimmer head, a brushless motor, a drive circuit, and a controller. The grass trimmer head includes a spool and a head housing. The spool is configured to wind a grass trimmer rope. The head housing is configured to accommodate the spool. The grass trimmer has an automatic winding mode. In the automatic winding mode, the brushless motor drives at least one of the spool and the head housing so that the spool and the head housing rotate relatively and the grass trimmer rope is automatically wound onto the spool. The controller is configured to: in the automatic winding mode, output a control signal to the drive circuit according to at least one of the given voltage and the given current so that the rotation speed of the brushless motor is basically constant.

9. 发明申请

US20210243946A1 RIDING LAWN MOWER AND OPERATING APPARATUS FOR THE SAME 有权
公开(公告)号：US20210243946A1
公开(公告)日：2021-08-12
申请号：US17241358
申请日：2021-04-27
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： Dezhong Yang , Jicun Cai , Xiubo Dai , Zhen Wang , Toshinari Yamaoka , Dingming Meng
IPC分类号： A01D34/00 , A01D69/02 , G01D5/14 , G05G1/04 , G05G1/015 , A01D34/69 , A01D34/64 , G05G9/047 , G01D5/16 , A01D101/00 , G01D5/12
摘要： A riding lawn mower includes a chassis, a power output assembly, a walking assembly, a power supply device, a control module, and an operating apparatus. The operating apparatus includes at least one bracket, an operating lap bar assembly, a pivoting assembly, and a position detecting module. The pivoting assembly mounts the operating lap bar of the operating lap bar assembly on the bracket. The operating lap bar can rotate around different positions in a first direction F1 and/or a second direction F2. The position detecting module includes a magnetic element and a magnetic sensor. The magnetic element is provided on the pivoting assembly or the bracket and the magnet sensor is spaced from the magnetic element so that the magnetic element and the magnetic sensor can generate a relative movement for detecting the position of the operating lap bar in the first direction F1 and/or the second direction F2.

10. 发明授权

US10978971B2 Method for controlling brushless motor 有权
公开(公告)号：US10978971B2
公开(公告)日：2021-04-13
申请号：US15781648
申请日：2016-12-30
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： Xiubo Dai
IPC分类号： H02P6/15
摘要： Provided is a method for controlling a brushless motor (101) in a power tool system. The brushless motor (101) includes multiple phase windings (u, v, w). The control method includes: operating the brushless motor (101) in each driving state for a period of time separately; measuring a voltage of a higher-voltage one of two phase input ends to which a driving voltage is applied and defining this voltage as a higher-voltage end voltage; measuring a voltage of a phase input end of one of the multiple phase windings which is kept floating when the driving voltage is applied and defining this voltage as a floating end voltage; determining whether values of the higher-voltage end voltage and the floating end voltage meet a preset condition; and when the values of the higher-voltage end voltage and the floating end voltage meet the preset condition, using any one of the multiple phase windings not serving as the current floating phase as a next floating phase. This method helps improve the running efficiency of the brushless motor (101).

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