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公开(公告)号：US10958195B2
公开(公告)日：2021-03-23
申请号：US16068728
申请日：2017-01-10
申请人： THK CO., LTD.
发明人： Yuki Nomura , Tsuyoshi Inda , Hideya Nakayama
IPC分类号： H02J1/00 , H02P6/00 , H02K41/02 , H02P29/40 , H02P6/08 , H02P6/28 , B65G47/91 , H01L21/67 , H02P6/16
摘要： A control device for a linear motor is disclosed which is provided with a current limiter and a driver. The current limiter outputs either a target current value or a limiting current command value. When the target current value is output as the current command value, the driver applies a voltage to the linear motor based of the value obtained by multiplying a first proportional gain by the difference between the current value of the current flowing to the linear motor and the current command value. When the limiting current command value is output as the current command value, the driver applies a voltage to the linear motor based of the value obtained by multiplying a second proportional gain, which is greater than the first proportional gain, by the difference between the current value of the current flowing to the linear motor and the limiting current command value.
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公开(公告)号：US10900519B2
公开(公告)日：2021-01-26
申请号：US16494860
申请日：2018-03-26
申请人： THK CO., LTD.
发明人： Toru Takahashi , Ryuichi Yamakoshi
摘要： A ball housing band is provided which can encourage increases in precision and rigidity of a motion guide apparatus and make the motion guide apparatus compact. A ball housing band includes: a housing band including a band formed with ends, the band having at least two rows of opening portions, and a plurality of spacers placed between the opening portions of the rows; and at least two rows of balls housed in the at least two rows of the opening portions. One of adjacent rows of and the other row of the balls are placed in a staggered arrangement in a state where the spacers are disposed between the balls and between the balls. The one row of the balls overlap the other row of the balls as viewed in the length direction of the ball housing band.
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公开(公告)号：US10724607B2
公开(公告)日：2020-07-28
申请号：US15555160
申请日：2016-03-02
申请人： THK CO., LTD.
发明人： Hideo Saito , Yuichi Mizutani
摘要： Provided is a speed reduction or speed increasing apparatus where the rotational stiffness can be increased, including a housing, a first crown gear, a support unit placed radially outward of the first crown gear to support the first crown gear to be capable of wave motion and incapable of rotation with respect to the housing, a second crown gear configured to be rotatable with respect to the housing, the second crown gear having a different number of teeth from the first crown gear, the second crown gear facing the first crown gear, and a cam unit configured to incline the first crown gear with respect to the second crown gear in such a manner that the first crown gear engages with the second crown gear, and to cause the first crown gear to undergo wave motion in such a manner that the location of contact moves.
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公开(公告)号：US10465776B2
公开(公告)日：2019-11-05
申请号：US14914376
申请日：2014-09-05
申请人： THK CO., LTD.
发明人： Masaki Nagatsuka , Yasuto Shiigi
摘要： There is provided an actuator capable of downsizing the actuator in axial and radial directions of a motor. The actuator includes a motor having an output shaft, a motor housing into which the motor is housed, an outer race, an inner race assembled with the outer race to be rotatable, a cross-roller bearing supporting an object to be rotatable so that the object member is constituted to be rotatable, wherein the outer race is mounted to the motor housing, the inner race is clamped by a support member rotating in accordance with the rotation of the output shaft and the object member fixed to the support member.
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公开(公告)号：US10393243B2
公开(公告)日：2019-08-27
申请号：US14914376
申请日：2014-09-05
申请人： THK CO., LTD.
发明人： Masaki Nagatsuka , Yasuto Shiigi
摘要： There is provided an actuator capable of downsizing the actuator in axial and radial directions of a motor. The actuator includes a motor having an output shaft, a motor housing into which the motor is housed, an outer race, an inner race assembled with the outer race to be rotatable, a cross-roller bearing supporting an object to be rotatable so that the object member is constituted to be rotatable, wherein the outer race is mounted to the motor housing, the inner race is clamped by a support member rotating in accordance with the rotation of the output shaft and the object member fixed to the support member.
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公开(公告)号：US20190170189A1
公开(公告)日：2019-06-06
申请号：US16322573
申请日：2017-08-02
申请人： THK CO., LTD.
摘要： This mobile-object-holding tool is mounted in place of a track body on a mobile object which moves along the track body, wherein the mobile object includes at least a pair of rolling element load rolling grooves through which a plurality of rolling elements roll and the mobile-object-holding tool includes a pair of holding parts which face the pair of rolling element load rolling grooves and hold the plurality of rolling elements, a biasing linking part which links the pair of holding parts together and biases the pair of holding parts away from each other, and a deformation regulating part which regulates a mounted contraction amount by which the biasing linking part is capable of contracting after being mounted on the mobile object to a predetermined value or less.
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公开(公告)号：US20190033696A1
公开(公告)日：2019-01-31
申请号：US16070942
申请日：2017-01-13
发明人： Noriaki Chikamoto , Hiroyuki Furui , Akira Nemura
摘要： Provided is a lens alignment adjustment device capable of suitably correcting an angle accuracy of an optical axis of a lens unit with respect to a projector main body. A lens alignment adjustment device is provided to a projector to retain a projection lens, and is capable of adjusting inclination of an optical axis of the projection lens with respect to the projector. The lens alignment adjustment device includes: a base plate which is retained in a predetermined posture with respect to the projector; and a lens fixing plate to which the projection lens is fixed. The lens fixing plate is rockably coupled to the base plate through intermediation of a first center pin orthogonal to an optical axis of the projection lens. First adjusting means for setting an inclination angle of the lens fixing plate with respect to the base plate about the first center pin is provided.
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公开(公告)号：US10167652B2
公开(公告)日：2019-01-01
申请号：US15742999
申请日：2016-08-05
申请人： THK CO., LTD.
发明人： Keisuke Nakakubo , Yoshihito Watanabe , Hiroaki Asakura , Tomokazu Oku , Tetsuya Fukumoto , Ryoji Tomono , Junichi Washida
摘要： A vertical seismic isolation device includes: a fixed frame; a movable frame arranged on the fixed frame; a support guide mechanism which allows only vertical movement of the movable frame; and a restoration member which maintains a constant distance between the movable frame and the fixed frame. The support guide mechanism includes: a track rail provided on the fixed frame; a moving block assembled to the track rail through rolling elements; a support leg, which has one end coupled to the moving block and another end coupled to the movable frame, and converts vertical movement of the movable frame into a motion of the moving block; and an auxiliary leg, which is half as long as the support leg, and has one end coupled to the support leg at an intermediate position in a longitudinal direction of the support leg and another end coupled to the fixed frame.
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公开(公告)号：US20180355959A1
公开(公告)日：2018-12-13
申请号：US15774693
申请日：2016-11-22
申请人： THK CO., LTD.
CPC分类号： F16H25/2238 , F16C29/005 , F16C29/06 , F16C29/0602 , F16C29/0609 , F16C29/063 , F16C33/62 , F16C35/00 , F16C2208/82 , F16C2226/40 , F16C2226/54 , F16C2226/60 , F16H25/22 , F16H25/2228 , F16H2025/2031
摘要： A track member or a movable member constituting a motion guide device includes a rolling part formed of a metal material contacting with a plurality of rolling bodies and forming a rolling body rolling surface a, a mounting part formed of a metal material having a mounting hole for mounting an external member, and a track body or a movable body formed of FRP jointed with the rolling part and the mounting part and forming the track member or the movable member, and the mounting part and the track body or the movable body have joint holes, opened in a direction orthogonal to a lamination direction of FRP reinforced fiber sheets S forming the track body or the movable body at a time of the joint, and can be jointed using jointing means. An external member can be securely mounted to the motion guide device formed of FRP.
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