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公开(公告)号：US20190097493A1
公开(公告)日：2019-03-28
申请号：US16185894
申请日：2018-11-09
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
Abstract: The electric linear motion actuator includes an electric motor, a linear motion mechanism configured to convert rotary motion of the electric motor to linear motion of a linear motion part via a rotation input-output shaft, and a housing holding the linear motion mechanism. The electric motor includes a stator and a rotor which are arranged such that the directions of magnetic poles that generate interlinkage flux contributing to a motor torque are parallel with a rotation axis of the electric motor. The stator is arranged so as to be coupled with an axial end surface of the housing. The rotor is arranged so as to have a space, in the axial direction, from the torque generating surface of the stator, and the rotor is fixed to the rotation input-output shaft of the linear motion mechanism.
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公开(公告)号：US20190001839A1
公开(公告)日：2019-01-03
申请号：US16067034
申请日：2017-01-05
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
Abstract: The motor drive device includes: an electric motor (6); a controller (1) that controls a torque of the electric motor (6) or a quantity of state corresponding to the torque; and a torque transmitter that transmits the torque of the electric motor (6) to a wheel of a vehicle. The controller (1) includes a torque fluctuation inhibiting section (15) that inhibits torque fluctuation in the electric motor (6). The torque fluctuation inhibiting section (15) includes an execution determination section (15b) that determines whether or not to inhibit the torque fluctuation in the electric motor (6), based on a result of comparison between an estimated value of a torque fluctuation frequency in the electric motor (6), and one or both of transmission characteristics of the torque transmitter and vibration characteristics in the vehicle.
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公开(公告)号：US20170166178A1
公开(公告)日：2017-06-15
申请号：US15445124
申请日：2017-02-28
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
IPC: B60T8/58 , B60T13/74 , B60T8/72 , F16D55/225 , F16D66/00
CPC classification number: B60T8/58 , B60T7/12 , B60T8/00 , B60T8/72 , B60T13/74 , F16D55/225 , F16D66/00 , F16D2066/006 , F16D2121/24 , F16D2125/40
Abstract: This brake device system includes a plurality of brake devices mounted to a vehicle, each brake device including a brake rotor, a friction pad, friction pad driving assembly, and a control device. The control device is provided with: braking/stoppage determination section configured to cause the friction pad to come into contact with the brake rotor of each brake device, and determine whether or not the vehicle is braking or being kept stopped; and heat conduction suppressing section configured to, when the braking/stoppage determination section has determined that the vehicle is braking or being kept stopped, reduce the braking force of a part of the plurality of brake devices, thereby to reduce heat conductivity of brake friction heat to the friction pad driving assembly.
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公开(公告)号：US20170146410A1
公开(公告)日：2017-05-25
申请号：US15427625
申请日：2017-02-08
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
IPC: G01L1/12 , F16D66/00 , F16D55/225 , G01D5/12 , G01L5/28
CPC classification number: G01L1/122 , F16D55/225 , F16D65/12 , F16D66/00 , F16D2066/005 , G01D5/12 , G01L5/225 , G01L5/28
Abstract: A magnetic load sensor is provided which is high in axial rigidity. The load sensor includes a pair of parallel plate coupled together by coupling pieces. The coupling pieces are inclined relative to the axial direction such that when an axial load is applied to the parallel plates, the parallel plates are displaced relative to each other in a direction perpendicular to the axial direction, due to deflection of the coupling pieces. A magnetic target is mounted to the parallel plate, and a magnetic sensor element is mounted to the parallel plate such that when the parallel plates are displaced relative to each other in the direction perpendicular to the axial direction, the magnetic target and the magnetic sensor element are displaced relative to each other in the direction perpendicular to the axial direction.
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公开(公告)号：US20160288778A1
公开(公告)日：2016-10-06
申请号：US15182211
申请日：2016-06-14
Applicant: NTN CORPORATION
Inventor： Makoto MURAMATSU , Yuuki SAOYAMA , Tatsuya YAMASAKI , Masaaki EGUCHI , Yui MASUDA
CPC classification number: B60T17/221 , B60T13/741 , B60T13/746 , B60T17/00 , F16D55/225 , F16D55/227 , F16D65/18 , F16D66/00 , F16D2066/001 , F16D2121/24 , F16D2125/40 , F16D2125/48 , F16D2125/50 , F16D2127/06
Abstract: An electric brake device includes an electric motor; a braking force application mechanism configured to apply a braking force on a vehicle wheel; a lock mechanism configured to assume one of a locked condition; a temperature sensor configured to measure an ambient temperature of a vehicle; and a freezing preventive power supply unit configured to initiate supply of an electric power to the electric motor or a drive source of the lock mechanism. The freezing preventive power supply unit interrupts the supply of the electric power to the electric motor or the drive source of the lock mechanism when the temperature detected by the temperature sensor exceeds a second preset temperature T2 that is higher than a first preset temperature T1.
Abstract translation: 电动制动装置包括电动机; 制动力施加机构，其构造成将制动力施加在车轮上; 锁定机构，被配置为承担锁定状态之一; 温度传感器，被配置为测量车辆的环境温度; 以及防冰电源单元，被配置为开始向所述电动机或所述锁定机构的驱动源提供电力。 当由温度传感器检测到的温度超过高于第一预设温度T1的第二预设温度T2时，防冻电源单元中断向电动机或锁定机构的驱动源的电力供应。
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Patent Agency Ranking
公开(公告)号：US20160129895A1
公开(公告)日：2016-05-12
申请号：US14894540
申请日：2014-05-21
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
IPC: B60T8/1755 , F16D65/18 , B60T13/74
CPC classification number: B60T8/1755 , B60T13/741 , F16D55/226 , F16D65/18 , F16D2121/24 , F16D2125/40 , F16D2125/50
Abstract: Two electric brake devices are mounted to respective wheels of a vehicle and each include an electric motor. If fluctuations in braking force occurs in one of the two electric brake devices, a control device calculates operating quantities of the respective electric brake devices based on the deviation between a command value of the sum of the braking forces of the electric brake devices and the sum of the feedback values of the braking forces of the electric brake devices, and causes both electric control devices to perform compensation operations for compensating for the braking force fluctuations while keeping constant the sum of the respective braking forces. This makes it possible to effectively reduce the braking force fluctuations even if the operating amplitudes of the individual electric brake devices are small.
Abstract translation: 两个电动制动装置安装在车辆的相应车轮上，并且每个都包括电动马达。 如果在两个电动制动装置中的一个制动装置中发生制动力的波动，则控制装置基于电动制动装置的制动力的总和的指令值与总和 的电动制动装置的制动力的反馈值，并且使得两个电气控制装置执行用于补偿制动力波动的补偿操作，同时保持各个制动力之和的恒定。 这使得即使各个电动制动装置的工作幅度小，也能有效地降低制动力波动。
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公开(公告)号：US20150316933A1
公开(公告)日：2015-11-05
申请号：US14648722
申请日：2013-11-12
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
CPC classification number: G05D3/12 , F16D65/18 , F16D2121/24 , F16D2125/40 , F16D2125/50 , F16D2127/06 , F16D2129/08 , F16H25/20 , G05B19/19 , G05B2219/43194 , G05B2219/49141 , H02K7/06 , H02K11/24 , H02P3/26 , H02P6/006 , H02P6/16
Abstract: An electric linear motion actuator includes an electric motor, a motion converting mechanism that converts the rotational motion of the electric motor into a linear motion of a linear moving member, a load sensor that detects the magnitude of the load applied to the brake disk from the linear moving member, and a controller that performs feedback control on the electric motor based on the difference between the load detected by the load sensor and a load command value. The controller reduces the number of revolutions of the electric motor when the linear moving member moves into a predetermined zone immediately before the position where the clearance between the linear moving member and the brake disk becomes zero.
Abstract translation: 电动直线运动致动器包括电动机，将电动机的旋转运动转换为直线运动部件的直线运动的运动转换机构，负载传感器，其从 线性移动部件，以及基于由负载传感器检测到的负载与负载指令值之间的差异对电动机进行反馈控制的控制器。 当直线移动部件移动到直线移动部件和制动盘之间的间隙变为零的位置之前的预定区域时，控制器减少电动机的转数。
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公开(公告)号：US20220105919A1
公开(公告)日：2022-04-07
申请号：US17553922
申请日：2021-12-17
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
Abstract: A controller of an electric brake device includes first, second and third PKB operators. Upon receipt of an instruction to produce a parking brake active state while a parking brake is released, the first PKB operator exerts a braking force without depending on a brake pedal and determines if a desired braking force is exerted. After the determination by the first PKB operator, the second PKB operator makes a movable part ready to come into engagement with an engaged part and causes an electric motor to rotate in a direction in which the braking force is decreased, so that the movable part comes into engagement with the engaged part to prevent the rotation of the electric motor. Then, the third PKB operator produces the parking brake active state where no driving power is generated to the electric motor.
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公开(公告)号：US20200031323A1
公开(公告)日：2020-01-30
申请号：US16499018
申请日：2018-03-29
Applicant: NISSIN KOGYO CO., LTD. , VEONEER NISSIN BRAKE SYSTEMS JAPAN CO., LTD. , MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA , NTN CORPORATION
Inventor： Hiromasa SATOH , Toshihiro OBIKA , Yusuke KOGA , Hiromitsu TOYOTA , Haruo KOTERA , Tatsuya YAMASAKI , Yui MASUDA
Abstract: A highly reliable vehicle brake system that includes an electric brake and achieves redundancy at low cost is provided.A vehicle brake system (1) includes electric brakes (16a to 16d) that include at least one unit of motors (80 and 81), and first and second control devices (10 and 11) that include a master controller (30) and a first sub-controller (40) that are connected to one another. The master controller (30) includes a driver control unit (301) that can control drivers (61 and 63), and a braking force calculation unit that calculates braking force of the electric brakes (16a to 16d). The first sub-controller (40) includes a driver control unit that controls a driver (60), and a braking force calculation unit that calculates braking force of the electric brakes (16a to 16d). The master controller (30) and the first sub-controller (40) include a determination unit that compares braking force calculation results of other controllers to determine braking force.
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公开(公告)号：US20190181721A1
公开(公告)日：2019-06-13
申请号：US16279187
申请日：2019-02-19
Applicant: NTN CORPORATION
Inventor： Yui MASUDA
Abstract: When a rotor performs an ordinary rotation operation, an axial position of the rotor is retained such that the rotor is rotatable with respect to a stator. When a parking brake switch is operated while a vehicle is at stoppage, a rotor slider slides the rotor in an axial direction against a preload of an axially preloading part. This brings an engaging portion of the rotor into engagement with an engaged potion of a housing. The reverse input holder retains the rotation angle of the rotor during the engagement due to the fact that the engagement between the engaging portion and the engaged potion is maintained against a reverse input load acting on the rotor as an external force that accompanies a reaction force of a pressing force of a brake friction member.
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