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1. 发明公开

EP2484935A4 ELECTRICALLY OPERATED LINEAR ACTUATOR AND ELECTRICALLY OPERATED DISC BRAKE DEVICE 有权
公开(公告)号：EP2484935A4
公开(公告)日：2018-04-18
申请号：EP10820336
申请日：2010-09-13
申请人： NTN TOYO BEARING CO LTD
发明人： YAMASAKI TATSUYA , EGUCHI MASAAKI
IPC分类号： F16H25/20 , F16D65/18 , F16H19/02 , F16H25/24
CPC分类号： F16H25/2252 , F16D65/18 , F16D2121/24 , F16D2125/40 , F16D2125/48
摘要： In an electric linear motion actuator, it is proposed to uniformly distribute external thrust loads to respective planetary rollers while the planetary rollers are revolving around a rotary shaft while rotating about their respective axes with a helical rib of an outer ring member in engagement with circumferential grooves of the respective planetary rollers. The planetary rollers (6) have bearing support surfaces (6b) on which thrust bearings (18) are supported, respectively. The distance from the bearing support surface (6b) of each planetary roller (6) to a predetermined reference position of each circumferential groove (6a) of the planetary roller (6) is different from the corresponding distances for the other planetary rollers (6), whereby with the planetary rollers (6) supported by the respective thrust bearings (18), the axial position of each circumferential groove (6a) coincides with the axial position of the portion of the helical rib (5a) of the outer ring member (5) that is engaged in the circumferential groove (6a).

2. 发明公开

EP3009705A4 ELECTRIC LINEAR ACTUATOR AND ELECTRIC BRAKE DEVICE 有权
公开(公告)号：EP3009705A4
公开(公告)日：2016-06-08
申请号：EP14811512
申请日：2014-06-12
申请人： NTN TOYO BEARING CO LTD
发明人： YAMASAKI TATSUYA , MURAMATSU MAKOTO , MASUDA YUI
IPC分类号： F16D65/18 , F16D23/08 , F16D121/24 , F16D125/40 , F16D125/48 , F16D125/50 , F16D127/06 , F16D129/08 , H02K7/06 , H02K7/116
CPC分类号： F16D65/18 , F16D55/225 , F16D65/183 , F16D2121/24 , F16D2125/50 , F16H25/2252 , F16H25/2454 , H02K7/06 , H02K7/116
摘要： It is an object of the present invention to assemble an electric linear motion actuator easily. The electric linear motion actuator includes an electric motor (30), a drive shaft (27) configured to be rotated by the electric motor (30), a rotation-to-linear motion converting mechanism (50) configured to convert the rotational motion of the drive shaft (27) to the axial linear motion of an axially movably supported outer ring member (22), and an electric locking mechanism (70) incorporated in a reduction gear mechanism (40) in which the rotation of a rotor shaft (33a) of the electric motor (30) is reduced in speed and transmitted to the drive shaft (27). When the electric locking mechanism (70) is energized, the power transmission path (reduction gear mechanism (40))shifts to the locked state in which power cannot be transmitted through the power transmission path, and when the electric locking mechanism (70) is de-energized thereafter, the power transmission path is kept in the locked state. The electric locking mechanism (70) is built in a motor case (31) of the electric motor (30) so that the electric motor (30) and the electric locking mechanism (70) are unitized.

3. 发明公开

EP2891823A4 ELECTRIC DIRECT-ACTING ACTUATOR AND ELECTRIC DISC BRAKE DEVICE 失效
标题翻译：电动执行器直接驱动电动制动装置
公开(公告)号：EP2891823A4
公开(公告)日：2016-01-27
申请号：EP13832265
申请日：2013-08-27
申请人： NTN TOYO BEARING CO LTD
发明人： YAMASAKI TATSUYA
IPC分类号： F16H25/20 , F16D65/14 , F16D65/18 , F16D66/00
CPC分类号： F16D65/14 , F16D65/18 , F16D2121/24 , F16D2125/40 , F16D2125/48 , F16D2125/50 , F16H25/2252 , F16H2025/2075 , F16H2025/2081 , F16H2025/2276 , Y10T74/18576
摘要： An electric linear motion actuator includes a central shaft (11), an outer ring member (5) provided around the central shaft (11), and a plurality of planetary rollers (24) disposed between the central shaft (11) and the outer ring member (5). One of the central shaft (11) and the outer ring member (5) serves as an input member which is rotatable and immovable in the axial direction and rotated by an electric motor (12), while the other serves as an output member which is rotationally stationary and movable in the axial direction. The input member has a peripheral surface formed with a plurality of annular ribs (25) which are equal in pitch. Each planetary roller has a radially outer surface formed with annular grooves (26) which are equal in pitch to the annular ribs (25) and in which the annular ribs (25) are engaged. The output member has a peripheral surface formed with a helical rib (27) which is equal in pitch to the annular grooves (26) of the planetary rollers (24). With this arrangement, when the input member is rotated, the planetary rollers (24) rotate about their respective axes while revolving around the axis of the input member at an axially fixed position. This eliminates the necessity of thrust bearings for supporting the planetary rollers (24). When the planetary rollers (24) revolve around the axis of the input member, the output member is moved in the axial direction.

4. 发明公开

EP3170711A4 ELECTRIC BRAKE DEVICE 有权
公开(公告)号：EP3170711A4
公开(公告)日：2018-04-25
申请号：EP15821790
申请日：2015-07-10
申请人： NTN TOYO BEARING CO LTD
发明人： MASUDA YUI , YAMASAKI TATSUYA
IPC分类号： B60T8/00 , B60T13/74 , B60T17/18
CPC分类号： F16D65/18 , B60T1/005 , B60T13/74 , B60T13/741 , B60T17/18 , F16D55/225 , F16D55/226 , F16D63/006 , F16D65/183 , F16D2121/24 , F16D2125/40 , F16D2125/48 , F16D2127/02
摘要： The electric brake device includes an electric motor (4), a brake rotor, a friction pad, a conversion mechanism (6), a braking force command section (18a), a braking force estimation section (24), a controller (2), and a power supply device (30). The controller (2) includes: a power determination section (28) to determine whether an amount of remaining power that can be supplied from a power supply device (3) to the electric motor (4) has become equal to or less than a determined value; and a residual pressure cancellation section (29) to cancel a residual pressure of a braking force by driving the electric motor (4) in a direction opposite to a brake pressing direction such that an estimated value of the braking force obtained by the braking force estimation section (24) becomes equal to or less than a set value, when the power determination section (28) determines that the amount of remaining power has become equal to or less than the determined value.

5. 发明公开

EP3045774A4 ELECTRIC LINEAR ACTUATOR AND ELECTRIC BRAKE DEVICE 有权
公开(公告)号：EP3045774A4
公开(公告)日：2016-09-28
申请号：EP14841519
申请日：2014-08-26
申请人： NTN TOYO BEARING CO LTD
发明人： YAMASAKI TATSUYA
IPC分类号： F16H19/02 , F16D65/18 , F16H25/20
CPC分类号： F16H25/2252 , F16D55/22 , F16D65/18 , F16D2121/24 , F16D2125/40 , F16D2125/48 , F16D2125/50 , F16H25/2418
摘要： It is an object of the present invention to improve seal performance in an electric linear motion actuator configured to linearly drive a linear motion member due to the rotation of a rotary shaft. The linear motion member (22) is constituted by a cylindrical member (23) slidably fitted in a housing (21), and a pressing member (24) coupled to the distal end portion of the cylindrical member (23) so as to close the opening of the distal end of the cylindrical member (23). The portion of the pressing member (24) coupled to the cylindrical member (23) is located inside of a boot (28) sealing the space between the distal end portion of the housing (21) and the distal end portion of the linear motion member (22).

6. 发明公开

EP2767812A4 MAGNETIC LOAD SENSOR FOR LINEAR ACTUATOR AND LINEAR ACTUATOR 有权
标题翻译：磁传感器，去年线性和非线性
公开(公告)号：EP2767812A4
公开(公告)日：2015-03-18
申请号：EP12839877
申请日：2012-10-02
申请人： NTN TOYO BEARING CO LTD
发明人： MASUDA YUI , YAMASAKI TATSUYA , MURAMATSU MAKOTO
IPC分类号： G01L5/00 , F16C19/10 , F16C19/52 , F16C33/64 , F16C41/00 , F16D65/14 , F16D65/18 , F16D66/00 , F16H25/20 , G01L1/04
CPC分类号： G01L1/122 , B60T13/741 , F16C19/10 , F16C19/522 , F16C33/586 , F16C41/007 , F16D55/226 , F16D65/18 , F16D66/00 , F16D2066/005 , F16D2121/24 , F16D2125/40 , F16D2125/48 , F16D2125/50 , F16H25/20 , F16H25/2204 , G01L5/0009 , G01L5/12 , Y10T74/18576
摘要： A load sensor unit for use in a linear motion actuator is provided which is less likely to suffer from hysteresis errors during use while being mounted in the linear motion actuator, and which can reduce the axial length of the linear motion actuator. The load sensor unit is a magnetic load sensor unit, for use in a linear motion actuator, configured to detect the magnitude of an axial load applied to an object (22) from the linear motion actuator. The sensor unit includes a flange member (2) configured to be deflected when a reaction force to the axial load is received through a thrust bearing (41), a magnetic target (4) which generates magnetic fields; and a magnetic sensor (5) arranged such that its position relative to the magnetic target (4) changes when the flange member (4) is deflected. The flange member (2) has an axial end surface in which a groove (10) is formed with which rolling elements (41B) of the thrust bearing (41) are in rolling contact.

7. 发明公开

EP2450257A4 STEER-BY-WIRE TYPE STEERING DEVICE 有权
标题翻译：转向-BY-WIRE-LENKVORRICHTUNG
公开(公告)号：EP2450257A4
公开(公告)日：2013-02-27
申请号：EP10794073
申请日：2010-06-25
申请人： NTN TOYO BEARING CO LTD
发明人： YAMASAKI TATSUYA , ITAKURA YOSHINORI , SUZUKI NOBUYUKI
IPC分类号： B62D5/00 , B62D5/04 , B62D5/30 , B62D6/00 , B62D7/08 , B62D7/14 , B62D17/00 , B62D113/00 , B62D119/00
CPC分类号： B62D17/00 , B62D5/001 , B62D5/0424 , B62D5/0427 , B62D7/146

8. 发明公开

EP2570691A4 ELECTRIC DIRECT ACTING ACTUATOR AND ELECTRIC BRAKE DEVICE 有权
公开(公告)号：EP2570691A4
公开(公告)日：2018-04-25
申请号：EP11780517
申请日：2011-04-27
申请人： NTN TOYO BEARING CO LTD
发明人： MURAMATSU MAKOTO , YAMASAKI TATSUYA , EGUCHI MASAAKI , GOTO TOMOMI
IPC分类号： F16D65/18 , F16D65/14 , F16D121/24 , F16D125/40 , F16H19/02 , F16H19/04 , F16H25/20
CPC分类号： F16D65/18 , F16D2121/24 , F16D2125/40 , F16D2125/48 , F16D2127/06 , F16D2129/08 , F16H25/2021 , F16H25/2252 , Y10T74/18568 , Y10T74/18576
摘要： An electric brake system is proposed which includes an electric linear motion actuator and can generate the required braking force with high accuracy. A load sensor (30) is provided in a motion converting mechanism of the actuator which converts the rotary motion of a rotary shaft (4) to which the rotation of an electric motor (2) is transmitted to linear motion of an outer ring member (5) as an output member. The load sensor (30) detects the pushing force with which the outer ring member (5) linearly drives a driven member. With this arrangement, if the driven member is a braking member of an electric brake system, it is possible to directly detect the braking force applied by the driven member and thus to accurately generate the required braking force.

9. 发明公开

EP2775170A4 ELECTRIC DIRECT-ACTING ACTUATOR 失效
标题翻译： ELEKTRISCHER AKTUATOR MIT DIREKTANTRIEB
公开(公告)号：EP2775170A4
公开(公告)日：2017-05-31
申请号：EP12845180
申请日：2012-10-31
申请人： NTN TOYO BEARING CO LTD
发明人： YAMASAKI TATSUYA , MASUDA YUI , MURAMATSU MAKOTO , EGUCHI MASAAKI , SAOYAMA YUKI
IPC分类号： F16H25/20 , B60T17/22 , F16D65/14 , F16D65/18 , F16D66/00 , H02K7/06 , H02K7/116
CPC分类号： F16H25/20 , B60T13/741 , F16D55/226 , F16D65/18 , F16D2066/003 , F16D2121/24 , F16D2125/40 , F16D2125/48 , F16D2125/50 , F16H25/2015 , F16H25/2252 , H02K7/06 , H02K11/22 , H02K29/06 , Y10T74/18576
摘要： An electric linear motion actuator capable of accurately controlling the axial position of an outer ring member is provided. The electric linear motion actuator includes: a rotary shaft (10) to be driven by an electric motor (15); a plurality of planetary rollers (11) kept in rolling contact with the cylindrical surface formed on the outer periphery of the rotary shaft (10); a carrier (13) which retains the plurality of planetary rollers (11) such that the planetary rollers (11) are rotatable about axes of the respective planetary rollers (11) while revolving around the rotary shaft (10), and of which the axial movement is restricted; and an outer ring member (12) surrounding the plurality of planetary rollers (11) and supported so as to be slidable in the axial direction. Helical ribs (22) are formed on the inner periphery of the outer ring member (12); and circumferential grooves (23) are formed on the outer periphery of each planetary roller (11) so as to be engaged with the helical ribs (22). The rotation of the rotary shaft (10) is thus converted to the linear motion of the outer ring member (12). A revolution sensor (33) is provided which detects the rotation angle of the carrier (13).
摘要翻译：提供了一种能够精确地控制外环构件的轴向位置的电动直线致动致动器。该电动式直动致动器包括：由电动机（15）驱动的旋转轴（10）多个行星辊（11），与形成在旋转轴（10）的外周上的圆柱面保持滚动接触; 保持多个行星辊11的行星架13，该行星轮11能够一边绕着旋转轴10旋转一边绕各行星辊11的轴线旋转，运动受到限制; 以及围绕所述多个行星辊（11）且被支承为能够沿轴向滑动的外圈部件（12）。在外环件（12）的内圆周上形成螺旋肋（22）; 在各行星辊11的外周形成与螺旋肋22啮合的周向槽23。旋转轴（10）的旋转因此被转换成外环构件（12）的线性运动。提供检测载体（13）的旋转角度的旋转传感器（33）。

10. 发明公开

EP1912313A4 ELECTRIC DIRECT-ACTING ACTUATOR AND ELECTRIC BRAKE DEVICE 审中-公开
标题翻译： ELEKTRISCHER DIREKT WIRKENDER AKTOR UND ELEKTRISCHE BREMSENEINRICHTUNG
公开(公告)号：EP1912313A4
公开(公告)日：2017-03-29
申请号：EP06781750
申请日：2006-07-27
申请人： NTN TOYO BEARING CO LTD
发明人： YAMASAKI TATSUYA
IPC分类号： H02K7/06 , F16D65/18 , F16H1/28 , F16H25/22
CPC分类号： H02K7/06 , F16D65/18 , F16D2121/24 , F16D2125/405 , F16H13/06 , F16H25/2252 , Y10T74/18272 , Y10T74/19795
摘要： An object is to increase the linear driving force in a linear-motion actuator of the type in which the rotary motion of the rotor shaft of an electric motor is converted to the linear motion of planetary rollers disposed between the rotor shaft and an outer ring member by rotating the planetary rollers about the axis of the rotor shaft and also about their own axes. In an actuator of the type in which a plurality of planetary rollers 4 disposed between the rotor shaft 2a of an electric motor 2 and an outer ring member 3 fixed in position around the outer periphery of the rotor shaft 2a are rotated about the axis of the rotor shaft and also about their own axes, thereby converting the rotary motion of the rotor shaft 2a to the linear motion of the planetary rollers 4, a helical groove 7 is formed in the radially outer surface of each planetary roller 4 in which a helical rib formed on the radially inner surface of the outer ring member 3 is received. The helical groove 7 has a pitch equal to that of the helical rib and a lead angle different from that of the helical rib. With this arrangement, the amount of the linear motion of the planetary rollers 4 relative to the amount of the rotary motion of the rotor shaft 2a is determined by the difference in lead angle between the helical groove 7 and the helical rib. Thus, it is possible to obtain a large linear driving force.
摘要翻译：本发明的目的是增加线性运动致动器中的线性驱动力，其中电动机的转子轴的旋转运动转换成设置在转子轴和外圈构件之间的行星辊的线性运动通过围绕转子轴的轴线并且绕其自身的轴线旋转行星滚子。在这样的致动器中，设置在电动机2的转子轴2a和固定在转子轴2a的外周周围的位置的外圈构件3之间的多个行星辊4绕其轴线旋转转子轴，也绕其自身的轴线，从而将转子轴2a的旋转运动转换为行星辊4的直线运动，在每个行星辊4的径向外表面上形成螺旋槽7，形成在外圈构件3的径向内表面上。螺旋槽7具有等于螺旋肋的间距和与螺旋肋不同的导程角的间距。通过这种布置，行星辊4相对于转子轴2a的旋转运动量的直线运动的量由螺旋槽7和螺旋肋之间的导程角的差确定。因此，可以获得大的线性驱动力。

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