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公开(公告)号：EP4454816A1
公开(公告)日：2024-10-30
申请号：EP24160120.2
申请日：2024-02-28
发明人： CHEN, Shuai , KE, Hongtao , LI, Yang , FENG, Zhiwei , LIU, Longxiang , WU, Yongkang , LI, Guang
IPC分类号： B25B21/02
摘要： Provided is an impact tool. The impact tool includes an output shaft (400) for outputting torque, where the tightening torque of the output shaft (400) to a workpiece is greater than or equal to 750 N.m; and an impact assembly (300) that provides an impact force to the output shaft (400). A main shaft ball groove (311) includes a first ball groove (3111) that extends spirally about a main shaft axis (301) and is concave on an outer surface and a second ball groove (3112) that extends spirally about the main shaft axis (301) and is concave on the outer surface. An impact ball groove (321) includes a third ball groove (3211) that mates with the first ball groove (3111) to accommodate the rolling ball (350) and a fourth ball groove (3212) that mates with the second ball groove (3112) to accommodate the rolling ball (350). The included angle α between the first ball groove (3111) and the second ball groove (3112) is less than the included angle β between the third ball groove (3211) and the fourth ball groove (3212).
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公开(公告)号：EP4327980A3
公开(公告)日：2024-05-08
申请号：EP23190759.3
申请日：2023-08-10
发明人： LI, Yang , ZHAN, Rui , XU, Zhongquan , WANG, Rong , ZHANG, Yi
CPC分类号： B24B23/04 , B24B27/065 , B24B27/0691 , B23D51/16 , B24B47/16 , B27B19/006 , B23D51/10 , B23D61/006 , B25F5/006 , B25F5/008
摘要： A power tool includes a housing, a motor, a ball sleeve, an oscillating member with a mounting portion, and an output shaft rotating around an output shaft axis. The oscillating member and the ball sleeve are engaged in an engagement region on the oscillating member, and the geometric center of the engagement region is an engagement center. A first plane bisects the first bearing assembly along a direction of the output shaft axis, and a second plane bisects the second bearing assembly along the direction of the output shaft axis. The height from the engagement center to the first plane is a first height H1, the height from the engagement center to the second plane is a second height H2, and the ratio H1/H2 of the first height H1 to the second height H2 is greater than or equal to 0.5 and less than or equal to 1.4.
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公开(公告)号：EP4205906A1
公开(公告)日：2023-07-05
申请号：EP21888313.0
申请日：2021-09-22
发明人： WANG, Pengchen , LI, Yang , XU, Zhongquan
IPC分类号： B25B21/00 , B23B45/02 , B25F5/00 , G05B19/416
摘要： Provided are a smart power tool and a control method thereof. The smart power tool includes: an output shaft (101), an electric motor (201), a housing (102), and an adjustment assembly (103); where the adjustment assembly is used for adjusting a working mode and outputting a mode signal, where the working mode includes a drill gear mode and a wood screw mode; in the drill gear mode, a detection unit (202) is used for detecting a current value; and a controller (203) is used for receiving the mode signal and determining a set of current variables according to the working mode and the detected current value; determining, according to the set of current variables, whether startup ends; determining a set of feature quantities according to the set of current variables after the startup ends; determining a type of a drill bit according to the set of feature quantities; and determining a working state of the smart power tool according to the set of current variables and/or the set of feature quantities and the type of the drill bit and when the smart power tool is in a drill-through state, controlling the electric motor to stop rotating; in the wood screw mode, the detection unit is used for detecting a bus current value; and the controller is used for determining a first detection value according to the detected bus current value; determining, according to the first detection value, whether startup ends; identifying a slip condition of the smart power tool according to the first detection value after the startup ends, and filtering a variation of the first detection value under the slip condition; determining a second detection value according to a first detection value after filtering; and if the first detection value after filtering and the second detection value satisfy a preset condition, triggering the smart power tool to shut down.
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公开(公告)号：EP4397462A1
公开(公告)日：2024-07-10
申请号：EP23211341.5
申请日：2023-11-22
发明人： LI, Yang , WANG, Haoyu
CPC分类号： B27B17/08 , B27B17/083 , A01G3/086 , B27B17/0008 , B25F5/008
摘要： A pole chain saw (100) includes a connecting rod (20) and a front end assembly (10) disposed at the front end of the connecting rod. The front end assembly (10) includes an electric motor (11); an output device (12) including a guide plate (121) and a chain (122) wound around the guide plate, where the electric motor (11) drives the chain (122) to rotate; a transmission assembly (14a) connecting the electric motor (11) to the output device (12); and a gearbox (145) supporting and accommodating the transmission assembly (14a), where at least part of the gearbox is made of metal. The chain saw can effectively enhance the heat dissipation effect of the gearbox (145) and increase the service life of a transmission mechanism (14).
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公开(公告)号：EP3815847A1
公开(公告)日：2021-05-05
申请号：EP19814032.9
申请日：2019-06-03
发明人： LING, Qi , WANG, Rong , LI, Yang
摘要： Disclosed is a power tool including: a power assembly including a motor, the motor including a motor shaft rotatable about a motor axis; an output assembly including an output shaft; a transmission assembly; a first housing; a second housing; wherein the power tool is provided with a first vibration isolation plane and a second vibration isolation plane; the first vibration isolation plane is provided with a first vibration isolation block, and the second vibration isolation plane is provided with a second vibration isolation block; the whole composed of the first vibration isolation block and the second vibration isolation block is at least provided with a spacing portion between the first housing and the second housing; the second housing is spaced apart from the first housing at the spacing portion; the first vibration isolation block and the second vibration isolation block are separated from each other.
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公开(公告)号：EP4327980A2
公开(公告)日：2024-02-28
申请号：EP23190759.3
申请日：2023-08-10
发明人： LI, Yang , ZHAN, Rui , XU, Zhongquan , WANG, Rong , ZHANG, Yi
摘要： A power tool includes a housing, a motor, a ball sleeve, an oscillating member with a mounting portion, and an output shaft rotating around an output shaft axis. The oscillating member and the ball sleeve are engaged in an engagement region on the oscillating member, and the geometric center of the engagement region is an engagement center. A first plane bisects the first bearing assembly along a direction of the output shaft axis, and a second plane bisects the second bearing assembly along the direction of the output shaft axis. The height from the engagement center to the first plane is a first height H1, the height from the engagement center to the second plane is a second height H2, and the ratio H1/H2 of the first height H1 to the second height H2 is greater than or equal to 0.5 and less than or equal to 1.4.
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公开(公告)号：EP4209306A1
公开(公告)日：2023-07-12
申请号：EP22205691.3
申请日：2022-11-07
发明人： LI, Yang
摘要： A power tool 1 includes a motor 2, a drive mechanism 3, and an impact mechanism. The drive mechanism is capable of driving a tip functional element 6 to rotate about an output axis A. The impact mechanism is capable of abutting against the tip functional element and capable of driving the tip functional element. The impact mechanism includes an impact rod 41, an impact power piece 43, and an impact block 42. The impact rod abuts against the tip functional element. The impact power piece is used for generating impact power. The impact block is disposed between the impact rod and the impact power piece, capable of forming a gas space 44 with the impact power piece, and capable of reciprocating when impacted by the impact power generated by the impact power piece. A minimum length of the gas space in a direction of the output axis is less than or equal to 13 mm.
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公开(公告)号：EP3987906A1
公开(公告)日：2022-04-27
申请号：EP20843060.3
申请日：2020-07-24
发明人： REN, Yufei , LI, Yang , ZHU, Ronggen , XU, Haishen , ZHANG, Rui
IPC分类号： A01D34/68
摘要： Provided is a walk-behind self-propelled working machine. The walk-behind self-propelled working machine includes a main body, an operation switch, and a handle device. The main body includes a moving assembly and a drive motor configured to drive the moving assembly. The operation switch is connected to the drive motor. The handle device is connected to the main body and includes an operation member, a connecting rod, and a sensing module. The operation member includes a gripping portion for a user to hold. The connecting rod is connected to the main body. The sensing module is configured to sense a thrust that is applied to the handle device to drive the walk-behind self-propelled working machine and further includes a pressure sensor and a pressing member. The pressure sensor is disposed between the operation member and the connecting rod. When the gripping portion receives the thrust, the pressing member applies a force along a preset straight line to the sensor to drive the pressure sensor to deform.
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