公开(公告)号：US20160131212A1

公开(公告)日：2016-05-12

申请号：US14896050

申请日：2014-06-12

Applicant: NTN CORPORATION

Inventor： Tatsuya YAMASAKI ,  Makoto MURAMATSU ,  Yui MASUDA

IPC: F16D65/18 ,  F16H25/22 ,  F16H25/24 ,  F16D55/225

CPC classification number: F16D65/18 ,  F16D55/225 ,  F16D65/183 ,  F16D2121/24 ,  F16D2125/50 ,  F16H25/2252 ,  F16H25/2454 ,  H02K7/06 ,  H02K7/116

Abstract: The electric linear motion actuator includes an electric motor, a drive shaft configured to be rotated by the electric motor, a rotation-to-linear motion converting mechanism configured to convert the rotational motion of the drive shaft to the axial linear motion of an axially movably supported outer ring member, and an electric locking mechanism incorporated in a reduction gear mechanism in which the rotation of a rotor shaft of the electric motor is reduced in speed and transmitted to the drive shaft. When the electric locking mechanism is energized, the power transmission path shifts to the locked state in which power cannot be transmitted, and when the electric locking mechanism is de-energized thereafter, the power transmission path is kept in the locked state. The electric locking mechanism is built in a motor case of the electric motor so that the electric motor and the electric locking mechanism are unitized.

Abstract translation: 电动直线运动致动器包括电动机，构造成由电动机旋转的驱动轴;旋转到线性运动转换机构，其构造成将驱动轴的旋转运动转换成轴向可运动的轴向直线运动 以及电动锁定机构，其结合在减速齿轮机构中，其中电动机的转子轴的旋转速度降低并传递到驱动轴。 当电动锁定机构通电时，动力传递路径转移到不能传递动力的锁定状态，并且当电动锁定机构在此之后被断电时，动力传递路径保持在锁定状态。 电动锁定机构内置在电动机的电动机壳体中，使得电动机和电动锁定机构被组合。

公开(公告)号：US20150219172A1

公开(公告)日：2015-08-06

申请号：US14681477

申请日：2015-04-08

Applicant: NTN CORPORATION

Inventor： Yuuki SAOYAMA ,  Makoto MURAMATSU

IPC: F16D65/14

CPC classification number: F16D65/14 ,  B60T13/741 ,  F16D65/18 ,  F16D65/54 ,  F16D2121/24 ,  F16D2125/48 ,  F16D2127/06 ,  F16D2131/02

Abstract: The electric brake actuator with a parking function is provided with: detection unit which is provided in a vehicle in which the electric brake actuator is provided and is capable of detecting movement of the vehicle from a stop state; and determination unit configured to determine whether or not a locking mechanism has shifted to a parking locking state, by using a detection signal outputted from the detection unit, when the locking mechanism is driven by an actuator so as to switch from an unlocking state to the parking locking state.

Abstract translation: 具有停车功能的电动制动器致动器设置有：检测单元，其设置在设置有电动制动致动器的车辆中，并且能够检测车辆从停止状态的移动; 以及确定单元，其被配置为通过使用从所述检测单元输出的检测信号来确定锁定机构是否已经转移到停车锁定状态，当所述锁定机构由致动器驱动以从解锁状态切换到 停车锁定状态。

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

IPC: B60T17/22 ,  F16D66/00 ,  F16D65/18

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。

公开(公告)号：US20160076607A1

公开(公告)日：2016-03-17

申请号：US14785662

申请日：2014-04-17

Applicant: NTN CORPORATION

Inventor： Makoto YASUI ,  Makoto MURAMATSU ,  Yuki SAOYAMA

IPC: F16D63/00 ,  F16D55/226 ,  F16D65/18

CPC classification number: F16D63/006 ,  B60T1/005 ,  B60T1/062 ,  B60T13/741 ,  F16D55/226 ,  F16D65/18 ,  F16D2121/24 ,  F16D2125/40 ,  F16D2125/50 ,  F16H25/2454

Abstract: An electric linear motion actuator includes a locking mechanism for locking and unlocking the rotor shaft of an electric motor. The locking mechanism includes circumferentially arranged locking holes provided in a gear of a reduction gear mechanism, a locking pin moved toward and away from the locking holes, and engaged in one locking hole to lock the gear when the locking pin is moved toward the gear, and a linear solenoid for moving the locking pin toward and away from the gear. The plunger of the linear solenoid and the locking pin are formed as separate parts, and disposed coaxial with each other with their end faces axially facing each other. This prevents the moment load applied from the gear to the locking pin from acting on the plunger, thereby preventing damage to a bobbin slidably supporting the radially inner surface of the plunger.

Abstract translation: 电动直线运动致动器包括用于锁定和解锁电动机的转子轴的锁定机构。 锁定机构包括设置在减速齿轮机构的齿轮中的周向布置的锁定孔，锁定销朝向和远离锁定孔移动，并且当锁定销朝向齿轮移动时接合在一个锁定孔中以锁定齿轮， 以及用于将锁定销朝向和远离齿轮移动的线性螺线管。 线性螺线管和锁定销的柱塞形成为分离的部件，并且彼此同轴设置，并且它们的端面彼此轴向相对。 这防止从齿轮施加到锁定销的力矩作用在柱塞上，从而防止对可滑动地支撑柱塞的径向内表面的线轴的损坏。

公开(公告)号：US20150323026A1

公开(公告)日：2015-11-12

申请号：US14650584

申请日：2013-12-09

Applicant: NTN CORPORATION

Inventor： Makoto YASUI ,  Makoto MURAMATSU ,  Yuki SAOYAMA

IPC: F16D65/18 ,  F16H25/18 ,  F16D55/225

CPC classification number: F16D55/226 ,  B60T13/741 ,  F16D55/225 ,  F16D65/18 ,  F16D2121/24 ,  F16D2125/36 ,  F16D2125/48 ,  F16H25/186 ,  Y10T74/18568

Abstract: A ball ramp mechanism is configured such that a driving-side rotor and a driven-side rotor are located on the same axis in opposing relationship with each other; three opposed pairs of arc-shaped ramp grooves are provided on the respective opposing faces of the two rotors at uniform intervals in the circumferential direction, with the depth thereof being changed gradually in the circumferential direction and the direction of the change being made opposite therebetween; a ball is incorporated between each set of the opposing paired ramp grooves; the balls are retained by the cage; and flexibility is imparted to pillar sections defined between pockets of the cage so as to make the pillar sections elastically deformable; dimensional variations due to manufacturing tolerances of the ramp grooves are absorbed via elastic deformation of the pillar sections so that each of the plurality of balls is enabled to contact the ramp grooves uniformly.

Abstract translation: 滚珠坡道机构构造成使得驱动侧转子和从动侧转子彼此相对关系地位于同一轴线上; 在圆周方向上以均匀的间隔在两个转子的相对面上设置三个相对的弧形斜槽，其深度在圆周方向上逐渐变化，并且变化方向相反; 在每组相对的成对斜坡槽之间并入一个球; 球由保持架保持; 并且对保持架的凹部之间限定的支柱赋予柔性，使柱部能弹性变形; 由于斜槽的制造公差的尺寸变化被柱部的弹性变形吸收，使得多个滚珠能够均匀地接触斜坡槽。