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1. 发明授权

US11773949B1 Electro-hydraulic linear ball screw actuators 有权
公开(公告)号：US11773949B1
公开(公告)日：2023-10-03
申请号：US17863945
申请日：2022-07-13
申请人： ZOOMLION Heavy Industry NA, Inc. , ZOOMLION Heavy Industry Science and Technology Co. Ltd.
发明人： Shu Wang , Matthew Schoenberg
IPC分类号： F16H25/22 , F16H25/20
CPC分类号： F16H25/2209 , F16H2025/2081
摘要： An electro-hydraulic linear ball screw actuator preferably includes an electric motor, a hydraulic tube, an actuator ball screw, a ball nut device, an actuator rod and at least one external hydraulic flow passage. The actuator ball screw is rotated by the electric motor. The ball nut device includes a ball nut base, a piston portion and a rod thread. The ball nut device is retained in the hydraulic tube. The ball nut base includes a plurality of ball bearings, which engage ball threads on the actuator ball screw. The actuator rod is retained on the piston portion. Rotation of the electric motor causes the actuator rod to extend or retract. A first hydraulic chamber is located behind the piston portion and a second hydraulic chamber is located in front of the piston portion. The at least one external hydraulic flow passage transfers hydraulic fluid between the first and second chambers.

2. 发明申请

US20170159778A1 DOUBLE NUT BALL SCREW CAPABLE OF SENSING PRELOAD 有权
公开(公告)号：US20170159778A1
公开(公告)日：2017-06-08
申请号：US14956935
申请日：2015-12-02
申请人： NATIONAL CHUNG CHENG UNIVERSITY
发明人： Yeau-Ren JENG
IPC分类号： F16H25/22
CPC分类号： F16H25/2214 , F16H25/2006 , F16H25/2209
摘要： A double nut ball screw capable of sensing preload includes a screw rod, two nuts, a connection key, multiple balls, a deformable annular platform having a U-shaped cross section with a bottom wall portion and two sidewall portions integrally connected with two opposite lateral sides of the bottom wall portion, and an annular force sensor mounted on the bottom wall portion of the deformable annular platform and located between the two sidewall portions. The deformable annular platform has a protruded portion located at the outer surface of the bottom wall portion opposite to the force sensor, and is disposed in the gap between the two nuts and wedged between two mating surfaces of the two nuts with the distal ends of the sidewall portions abutted against the mating surface of one nut and the protruded portion abutted against the mating surface of the other nut.

3. 发明申请

US20170158221A1 Steering Device 有权
公开(公告)号：US20170158221A1
公开(公告)日：2017-06-08
申请号：US15361175
申请日：2016-11-25
申请人： JTEKT CORPORATION
发明人： Yasuharu YAMAMOTO
IPC分类号： B62D3/12 , F16H25/24 , B62D1/04 , F16H25/22 , B62D5/04 , B62D1/20
CPC分类号： B62D3/123 , B62D1/04 , B62D1/20 , B62D3/126 , B62D5/0424 , B62D5/0448 , F16C29/02 , F16H25/20 , F16H25/2204 , F16H25/2209 , F16H25/2454 , F16H55/283 , F16H2025/204 , F16H2025/2062 , F16H2025/2081 , F16H2025/2096
摘要： Two flat surface portions are provided on portions of a rack shaft away from rack teeth and a back surface in the circumferential direction. The two flat surface portions are parallel to each other. A rotation stopping member has a case and a low-friction member. The hollow portion provided inside the case includes two flat surface portions that face each other in a direction Y and extend in parallel with each other, and two flat surface portions that face each other in a direction Z and extend orthogonally to the flat surface portions. A slight clearance is provided between the outer surface of the rack shaft and the inner surface of the rotation stopping member (low-friction member). The rotation stopping member is disposed on the outer periphery of the rack shaft. The outer periphery of the rotation stopping member is fixed to the inner periphery of a rack housing.

4. 发明授权

US09279487B1 Ball screw and parts 有权
标题翻译：滚珠丝杠和零件
公开(公告)号：US09279487B1
公开(公告)日：2016-03-08
申请号：US13136598
申请日：2011-08-04
申请人： David B. Guglietti
发明人： David B. Guglietti
IPC分类号： F16H25/22 , F16H25/20 , F16H25/24
CPC分类号： F16H25/2006 , F16H25/2204 , F16H25/2209 , F16H25/2214 , F16H25/2223 , F16H25/2418 , Y10T74/18712 , Y10T74/18728 , Y10T74/19749 , Y10T74/19772
摘要： Double nut is capable of adjustment in a ball screw unit so as to regulate tension between the nut and the ball screw with their ball bearings such as to avoid or repair backlash in or maintain precision with the unit. The adjustment may be made without removal of the ball screw unit from a machine in which it operates or automatically. The double nut can be employed with or in methods of making, repair or adjustment of, and manufacturing with the ball screw unit with such a nut. A wiping contrivance for a ball screw nut or unit can be a member in annular form, and made and used in aspects analogous to those of the double nut. A depending foot, ball bearing return may be employed in a ball screw nut or unit in aspects analogous to those of the double nut.
摘要翻译：双螺母能够在滚珠丝杠单元中进行调节，以便通过其滚珠轴承来调节螺母和滚珠丝杠之间的张力，以避免或修复单元的反冲或保持精度。可以在不从其操作的机器或自动地移除滚珠丝杠单元的情况下进行调整。双螺母可用于制造，修理或调整和用这种螺母与滚珠丝杠单元一起制造的方法。用于滚珠丝杠螺母或单元的擦拭装置可以是环形构件，并且在类似于双螺母的方面制造和使用。在类似于双螺母的方面，可以在滚珠丝杠螺母或单元中采用依赖的脚，球轴承返回。

5. 发明申请

US20160033019A1 BALL SCREW APPARATUS 审中-公开
标题翻译：球螺丝装置
公开(公告)号：US20160033019A1
公开(公告)日：2016-02-04
申请号：US14807041
申请日：2015-07-23
申请人： JTEKT CORPORATION
发明人： Gento ARAMOTO , Naoko SAKAGUCHI
IPC分类号： F16H25/22 , F16D65/18
CPC分类号： F16H25/2454 , F16D65/18 , F16D2121/24 , F16D2125/40 , F16D2125/48 , F16H25/20 , F16H25/2209 , F16H25/2233 , F16H25/24 , F16H2025/2463
摘要： In a ball screw apparatus, a ball train including a plurality of main balls is housed in a raceway between a ball track of a ball nut and a ball track of a ball screw shaft. A coil spring housed in the raceway includes a first end that engages with an end of the ball train and a second end supported by a stopper (a first recessed portion, a protruding portion, or the like) of the ball nut. A stopper ball having a diameter larger than the diameter of the main ball is interposed between the stopper and the second end of the coil spring.
摘要翻译：在滚珠丝杠装置中，包括多个主球的球列容纳在滚珠丝杠的滚珠轨道和滚珠丝杠轴的滚珠轨道之间的滚道中。容纳在滚道中的螺旋弹簧包括与球列的端部接合的第一端和由球形螺母的止动器（第一凹部，突出部等）支撑的第二端。具有直径大于主球直径的止动球插入在止动件和螺旋弹簧的第二端之间。

6. 发明授权

US09133921B2 Ball screw and assembling method thereof 有权
标题翻译：滚珠丝杠及其组装方法
公开(公告)号：US09133921B2
公开(公告)日：2015-09-15
申请号：US14237306
申请日：2012-08-01
申请人： Masashi Shindo , Junji Minakuchi
发明人： Masashi Shindo , Junji Minakuchi
IPC分类号： F16H1/20 , F16H3/06 , F16H1/24 , F16H27/02 , F16H29/02 , F16H29/20 , F16H55/02 , F16H25/22 , F16H57/04 , F16H25/20
CPC分类号： F16H25/2214 , F16H25/2006 , F16H25/2209 , F16H57/0412 , F16H57/0497 , Y10T29/49826 , Y10T74/19744
摘要： To improve workability and sealing performance of a coolant when a plurality of nuts in a ball screw are brought into contact with one another, the plurality of nuts being coupled to one another, assembled to one threaded shaft and cooled by flowing the coolant through through-holes formed in the plurality of nuts in axial directions of the plurality of nuts. The ball screw includes counterbores of the through-holes formed on opposing end faces of both of adjoining nuts, and a ring-shaped sealing member inserted thereto. The counterbores are formed such that a depth of one counterbore is larger than a length of the sealing member, and the a depth of the other counterbore is smaller than the length of the sealing member, and such that circumferential positions of the counterbores of the adjoining nuts face each other when a desired preload is exerted.
摘要翻译：为了提高当滚珠丝杠中的多个螺母彼此接触时冷却剂的可操作性和密封性能，多个螺母彼此联接，组装到一个螺纹轴上并通过使冷却剂流过通孔而被冷却，在所述多个螺母的轴向上形成在所述多个螺母中的孔。滚珠丝杠包括形成在两个相邻螺母的相对端面上的通孔的沉孔和插入其中的环形密封构件。沉孔形成为使得一个沉孔的深度大于密封构件的长度，另一个沉孔的深度小于密封构件的长度，并且使得邻接的沉孔的圆周位置当施加所需的预载荷时，螺母彼此面对。

7. 发明授权

US08770052B2 Linear actuator 有权
标题翻译：线性执行机构
公开(公告)号：US08770052B2
公开(公告)日：2014-07-08
申请号：US12965043
申请日：2010-12-10
申请人： Koji Nakatake , Kazuyuki Kitazawa , Shigenori Miyairi
发明人： Koji Nakatake , Kazuyuki Kitazawa , Shigenori Miyairi
IPC分类号： F16H29/00 , F16H25/20 , F16H25/22
CPC分类号： F16H25/2209 , F16H25/2454 , F16H2025/2078 , H02K7/06 , Y10T74/18576 , Y10T74/18664 , Y10T74/18728 , Y10T74/19744 , Y10T74/19749
摘要： A linear actuator that does not require a high assembly precision is provided. A linear actuator includes a motor portion including a rotary shaft, a rotor, and a stator, a first bearing portion that supports a first end of the rotary shaft, a locknut threadably engaged on the first end of the rotary shaft, and a ball screw mechanism including a ball screw nut screwed to the locknut and a ball screw threadably engaged with the ball screw nut. Gaps formed between an outer peripheral portion of the rotary shaft and an inner peripheral portion of the locknut, except a male thread portion formed on the rotary shaft and a female thread portion formed on the locknut threadably engaged with each other, are defined to have respective predetermined sizes.
摘要翻译：提供了不需要高组装精度的线性致动器。线性致动器包括：电动机部分，包括旋转轴，转子和定子;支撑旋转轴的第一端的第一轴承部分，与旋转轴的第一端螺纹接合的锁紧螺母;以及滚珠丝杠机构，包括螺母连接在锁紧螺母上的滚珠丝杠螺母和与滚珠丝杠螺母螺纹接合的滚珠丝杠。形成在旋转轴的外周部和锁紧螺母的内周部之间的间隙除了形成在旋转轴上的外螺纹部分和形成在与螺纹接合的锁紧螺母上的阴螺纹部分之外，还被限定为具有相应的预定尺寸。

8. 发明申请

US20070068292A1 Preload adjusting device for a ball screw 审中-公开
标题翻译：滚珠丝杠预压调整装置
公开(公告)号：US20070068292A1
公开(公告)日：2007-03-29
申请号：US11230271
申请日：2005-09-19
申请人： Chia-Min Liu , Chung-Hsuen Lin
发明人： Chia-Min Liu , Chung-Hsuen Lin
IPC分类号： F16H25/22
CPC分类号： F16H25/2209 , Y10T74/18728
摘要： A preload adjusting device for a ball screw is disposed between screw nuts of a ball screw and comprises: two preload pieces each formed at a side thereof with a slant surface. The two preload pieces are mounted between the screw nuts in such a manner that the slant surfaces of the two preload pieces abut against each other, by such arrangements, a combined thickness of the two preload pieces will be changed by a relative displacement between the preload pieces, and in this way, a preload between the screw nuts is adjusted.
摘要翻译：用于滚珠丝杠的预紧力调节装置设置在滚珠丝杠的螺母之间，包括：两个预压件，每个预载件在其一侧形成有倾斜表面。两个预载件以这样的方式安装在螺母之间，使得两个预载件的倾斜表面通过这种布置彼此抵靠，两个预载件的组合厚度将由预载荷之间的相对位移而改变并且以这种方式调节螺母之间的预紧。

9. 发明申请

US20030094056A1 Anti-backlash screw and nut assembly 审中-公开
标题翻译：防间隙螺丝和螺母总成
公开(公告)号：US20030094056A1
公开(公告)日：2003-05-22
申请号：US10218462
申请日：2002-08-15
发明人： Kyi Hwan Park
IPC分类号： F16H025/20
CPC分类号： F16H25/2209 , Y10T74/18728
摘要： Disclosed is an anti-backlash screw and nut assembly adapted for converting rotational motion into linear motion. The assembly comprises a screw rotated by a motor; first and second nut blocks threadedly coupled with the screw to be linearly moved, the second nut block being formed on an upper surface thereof with an insertion pin; a pair of springs for connecting and applying compression or tensile force to the first and second nut blocks in a manner such that flanks of threads of the screw and the nut blocks can be brought into contact with each other while not causing backlash; and a plate member secured to an upper surface of the first nut block by fastening bolts and defined with a slot in which the insertion pin of the second nut block is inserted to be moved therealong.
摘要翻译：公开了一种适用于将旋转运动转换为直线运动的防间隙螺丝和螺母组件。组件包括由电动机旋转的螺钉; 第一和第二螺母块与螺钉螺纹连接以直线移动，第二螺母块在其上表面上形成有插入销; 一对弹簧，用于将第一和第二螺母块的压缩或拉力连接并施加，使得螺钉和螺母块的螺纹的侧面可以彼此接触而不会产生间隙; 以及通过紧固螺栓固定到第一螺母块的上表面的板构件，并且限定有第二螺母块的插入销以便沿其移动的狭槽。

10. 发明申请

US20010023618A1 Rolling-body screw drive and method of assembling the same 审中-公开
标题翻译：滚动体螺丝刀及其组装方法
公开(公告)号：US20010023618A1
公开(公告)日：2001-09-27
申请号：US09783468
申请日：2001-02-14
申请人： Rexroth Star GmbH
发明人： Erich Huppmann
IPC分类号： F16H003/06 , F16H027/02 , F16H029/02 , F16H029/20
CPC分类号： F16H25/2209 , Y10T74/18728
摘要： A rolling-body screw drive (10a) comprises a threaded spindle (12a) with a spindle axis (S), and a double nut (14a) which runs on the threaded spindle (12a) and has two separately formed individual nuts (16a, 18a) which are connected essentially rigidly to one another in the direction of the spindle axis (S). In this case, for setting a desired level of play or a desired prestressing in relation to the threaded spindle (12a), the two individual nuts (16a, 18a) can be rotated continuously relative to one another about the spindle axis (S) and can be secured in any desired rotary position relative to one another corresponding to the desired level of play or the desired prestressing. Furthermore, an annular disk (28a), which is connected to a first (16a) of the two individual nuts, is arranged between the two individual nuts and has its disk plane running essentially orthogonally to the spindle axis (S), is pressed, by way of at least one circumferential section (64a), into an associated recess (66a) of the second individual nut (18a).
摘要翻译：滚动体螺旋驱动器（10a）包括具有主轴轴线（S）的螺纹轴（12a）和在螺纹轴（12a）上延伸的双螺母（14a），并具有两个单独形成的单个螺母（16a， 18a），其在主轴轴线（S）的方向上基本上彼此刚性地连接。在这种情况下，为了相对于螺纹心轴（12a）设定所需的游隙水平或期望的预应力，两个独立的螺母（16a，18a）能够围绕主轴（S）相对于彼此连续地旋转，并且可以相对于彼此对应于期望的游隙水平或期望的预应力的任何期望的旋转位置被固定。此外，连接到两个单独螺母的第一（16a）的环形盘（28a）布置在两个单独的螺母之间，并且其盘平面基本上垂直于主轴轴线（S）运动，被按压，通过至少一个圆周部分（64a）进入第二单独螺母（18a）的相关联的凹部（66a）。

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