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1.发明公开公开(公告)号：US20230233399A1
公开(公告)日：2023-07-27
申请号：US17964012
申请日：2022-10-11
IPC分类号： A61H3/04
CPC分类号： A61H3/04 , A61H2003/043
摘要： The present disclosure discloses a method, a device of steering assist control for a walker, and a memory. The method includes acquiring a first moving speed of the left wheel and a second moving speed of the right wheel; determining whether the left wheel and/or the right wheel is in a steering state; calculating a steering angle estimate or a speed difference between the first moving speed and the second moving speed when in the steering state; acquiring steering assist compensations; and performing an assist compensation on the left wheel and/or the right wheel. The method can make the user more effortless when pushing the walker to turn, making it more convenient for users with less strength to use the walker, and reducing impact of the steering on the travel speed. Sudden stop caused by the increase of steering resistance can be avoided, and safety can be improved.
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公开(公告)号：US20240148598A1
公开(公告)日：2024-05-09
申请号：US18414897
申请日：2024-01-17
CPC分类号： A61H3/04 , B60T1/06 , H02K49/065 , A61H2003/046
摘要： Disclosed are a brake apparatus, a wheel body assembly, and a rollator. The brake apparatus comprises a shaft body, a housing, a magnetic induction mechanism and an adjustment mechanism. The housing rotates relative to the shaft body; the magnetic induction mechanism is arranged in the housing to generate resisting force opposite to a rotation direction of the housing or the shaft body to the housing or the shaft body by a magnetic field reaction when the housing rotating relative to the shaft body. The adjustment mechanism is connected to the magnetic induction mechanism for adjusting a magnitude of the resisting force. The magnetic induction mechanism is capable of playing a braking role on the wheel body integrated or connected with the brake apparatus, because its braking force is related to the rotation of the housing or shaft body, rather than friction braking, it will not produce an emergency stop effect.
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3.发明授权公开(公告)号：US11771615B2
公开(公告)日：2023-10-03
申请号：US17964012
申请日：2022-10-11
IPC分类号： A61H3/04
CPC分类号： A61H3/04 , A61H2003/043
摘要： The present disclosure discloses a method, a device of steering assist control for a walker, and a memory. The method includes acquiring a first moving speed of the left wheel and a second moving speed of the right wheel; determining whether the left wheel and/or the right wheel is in a steering state; calculating a steering angle estimate or a speed difference between the first moving speed and the second moving speed when in the steering state; acquiring steering assist compensations; and performing an assist compensation on the left wheel and/or the right wheel. The method can make the user more effortless when pushing the walker to turn, making it more convenient for users with less strength to use the walker, and reducing impact of the steering on the travel speed. Sudden stop caused by the increase of steering resistance can be avoided, and safety can be improved.
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公开(公告)号：US20240151282A1
公开(公告)日：2024-05-09
申请号：US18414926
申请日：2024-01-17
IPC分类号： F16D63/00
CPC分类号： F16D63/002 , F16D2065/788
摘要： Disclosed are a brake apparatus, a wheel body assembly and a rollator. The brake apparatus includes a shaft body, a housing, a magnetic induction mechanism, a rectifier mechanism and an adjustment mechanism, the housing is rotatable relative to the shaft body, the magnetic induction mechanism is used to generate resisting force opposite to a rotation direction of the housing or the shaft body by a magnetic field reaction when the housing rotating relative to the shaft body, the rectifier mechanism is used to rectify a current of the magnetic induction mechanism, the adjustment mechanism is used to adjust the magnitude of the resisting force generated by the magnetic induction mechanism. By setting the rectifier mechanism to rectify output of the multiple wires of the magnetic induction mechanism, the structure of the adjustment mechanism can be simplified, making the overall structure of the brake apparatus simpler.
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公开(公告)号：US11793706B2
公开(公告)日：2023-10-24
申请号：US18086448
申请日：2022-12-21
发明人： Mao Gong , Jianfeng Lu
CPC分类号： A61H3/04 , A61G5/04 , A61G2203/44 , A61H2003/002 , A61H2003/043 , A61H2201/5061
摘要： An intelligent rollator has a vehicle body, a seat provided in the vehicle body for a person to sit or place items on, and front and rear wheels provided at the bottom of the wheels, driven by motors. A power-assist control method includes the following steps: obtaining the load weight of the vehicle body; and entering a first power-assist compensation mode to compensate the torque output of the motor according to a first power-assist compensation threshold, when the load weight is greater than a set threshold. The first power-assist compensation threshold is direct proportional to at least one of the following parameters: the load weight of the intelligent rollator, and the moving speed of the intelligent rollator.
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6.发明授权公开(公告)号：US11793705B2
公开(公告)日：2023-10-24
申请号：US18016160
申请日：2021-08-20
CPC分类号： A61H3/04 , B60T7/12 , B60T8/1701 , B60T8/171 , A61H2003/043 , A61H2003/046 , A61H2201/018 , A61H2201/1207 , A61H2201/5007 , A61H2201/5046 , A61H2201/5064 , A61H2201/5084
摘要： Disclosed is a fall-resistant control method for an intelligent rollator, an intelligent rollator and a controller. The intelligent rollator has a vehicle body, front wheels and/or rear wheels configured at the bottom of the vehicle body and driven by a motor. The fall-resistant control method includes: recording the current position of the motor as the initial position when the moving speed of the intelligent rollator exceeds a first threshold and the acceleration of the intelligent rollator exceeds a second threshold; determining a first braking torque according to the position change of the motor relative to the initial position, wherein the greater the position change, the greater the first braking torque; determining a second braking torque according to the moving speed and/or acceleration of the intelligent rollator, wherein the greater the moving speed and/or the acceleration, the greater the second braking torque; determining the fall-resistant braking torque according to the first braking torque and the second braking torque.
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公开(公告)号：US20240277552A1
公开(公告)日：2024-08-22
申请号：US18016069
申请日：2021-10-28
CPC分类号： A61H3/04 , H02K49/06 , A61H2003/046
摘要： Disclosed is a brake device, a wheel body assembly and a rollator. The brake device includes a shaft body, a housing, a magnetic inductor and a magnet assembly, the housing sleeved outside the shaft body and configured coaxially with the shaft body, the housing being rotatable relative to the shaft body, the magnetic inductor having a coil wound thereon, the magnet assembly including a plurality of magnets spaced along the circumference of the shaft body, wherein one of the magnetic inductor or the magnet assembly is connected to the shaft body and the other is connected to the housing so that when the housing rotates relative to the shaft body, the coil is capable of cutting the magnetic field formed by the magnet assembly so as to produce resistance in the opposite direction of rotation of the housing or the shaft body, which can play a braking role on the wheel body integrated or connected with the brake device. And because the braking force is related to the rotation of the housing or the shaft body, rather than friction braking, it will not produce an emergency stop effect, which is more safer and also can reduce wear and improve the service life of the brake device. Meanwhile the brake device is simple in structure and easy to prepare.
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8.发明公开公开(公告)号：US20230270618A1
公开(公告)日：2023-08-31
申请号：US18016240
申请日：2021-07-09
发明人： Mao GONG , Jianfeng LU
CPC分类号： A61H3/04 , G05B13/0265 , A61H2003/043 , A61H2003/001
摘要： A control method for an intelligent rollator, and a control device, an intelligent rollator, a controller thereof. The intelligent rollator is configured with a vehicle body, a front wheel and rear wheels driven by a motor. The method includes the following steps: obtaining the moving speed of the intelligent rollator; obtaining the attitude of the intelligent rollator; and reducing the torque output of the motor, when the attitude indicates that the front end of the intelligent rollator is tilted upward, and the moving speed of the intelligent rollator is less than a first threshold. The intelligent rollator can determine whether it is necessary to enter an intelligent crossing-curb mode, in which the torque output of the motor is reduced, so as to prevent the vehicle body out of control due to the increase of torque caused by the too large speed when getting over curbs.
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9.发明公开公开(公告)号：US20230190568A1
公开(公告)日：2023-06-22
申请号：US18016160
申请日：2021-08-20
CPC分类号： A61H3/04 , B60T8/1701 , B60T7/12 , B60T8/171 , A61H2201/1207 , A61H2003/043 , A61H2201/018 , A61H2201/5084 , A61H2003/046 , A61H2201/5064 , A61H2201/5007 , A61H2201/5046
摘要： Disclosed is a fall-resistant control method for an intelligent rollator, an intelligent rollator and a controller. The intelligent rollator has a vehicle body, front wheels and/or rear wheels configured at the bottom of the vehicle body and driven by a motor. The fall-resistant control method includes: recording the current position of the motor as the initial position when the moving speed of the intelligent rollator exceeds a first threshold and the acceleration of the intelligent rollator exceeds a second threshold; determining a first braking torque according to the position change of the motor relative to the initial position, wherein the greater the position change, the greater the first braking torque; determining a second braking torque according to the moving speed and/or acceleration of the intelligent rollator, wherein the greater the moving speed and/or the acceleration, the greater the second braking torque; determining the fall-resistant braking torque according to the first braking torque and the second braking torque.
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10.发明申请公开(公告)号：US20230119433A1
公开(公告)日：2023-04-20
申请号：US18086448
申请日：2022-12-21
发明人： Mao GONG , Jianfeng LU
摘要： A intelligent rollator has a vehicle body, a seat provided in the vehicle body for a person to sit or place items on, and front and rear wheels provided at the bottom of the wheels, driven by motors. A power-assist control method includes the following steps: obtaining the load weight of the vehicle body; and entering a first power-assist compensation mode to compensate the torque output of the motor according to a first power-assist compensation threshold, when the load weight is greater than a set threshold. The first power-assist compensation threshold is direct proportional to at least one of the following parameters: the load weight of the intelligent rollator, and the moving speed of the intelligent rollator. The intelligent rollator can be used safely even under the situations of huge different loads, as with load or not the motor torque output is prevented from being too large to drag the user to fall down, or when the user is seated the motor torque output is prevented from being too small and power is insufficient.
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