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公开(公告)号：US20200091851A1
公开(公告)日：2020-03-19
申请号：US15746906
申请日：2016-07-27
Applicant: THK CO., LTD.
Inventor： Junichi Sakai , Shuhei Yamanaka , Hideo Saito , Yuki Nomura , Hideya Nakayama
IPC: H02P25/064 , H02P3/26 , F16D63/00 , F16D65/14
Abstract: A control device for controlling a linear actuator having a linear motor and a brake device includes a magnetic pole position estimation means to estimate which of a plurality of sections obtained by dividing a magnetic pole position of 0° to 360°, the mover is located in on the basis of a direction of movement of the mover by pulse energization, a magnetic pole position setting means to perform direct current excitation at an estimated magnetic pole position estimated by the magnetic pole position estimation means and set the estimated magnetic pole position as a magnetic pole position of the mover, and a brake control means to turn on a brake device before pulse energization by the magnetic pole position estimation means is performed and turn off the brake device after the magnetic pole position estimation means estimates the section in which the mover is located.
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公开(公告)号：US10174787B2
公开(公告)日：2019-01-08
申请号：US15560051
申请日：2016-03-10
Applicant: THK CO., LTD.
Inventor： Junichi Sakai , Kaoru Hoshide , Shigeo Tomita , Yuki Nakamura , Nobuyuki Maki , Muten Iwamoto , Kazuya Horike , Kenji Narata , Katsunori Yamamura , Fukuji Nakano , Shigemi Nakamura , Yosuke Irie
IPC: F16C29/06
Abstract: A motion guide apparatus ensures that a retaining portion retains a rolling element. A rolling element retainer having retaining portions that prevent a rolling element from falling out of a movable body, the retaining portions extending along a loaded rolling element rolling portion, is incorporated in the movable body of the motion guide apparatus. End plates are formed integrally with the retaining portions. Fall prevention portions to reduce the widths of openings between the retaining portions are provided to center parts of the retaining portions in a length direction thereof. The fall prevention portions are padding portions integrated with the retaining portions, the padding portions rising in such a manner as to reduce the widths of the openings, and/or projections integrated with the retaining portions, the projections touching the movable body in such a manner that the center parts of the retaining portions bend toward a track member.
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公开(公告)号：US20180073558A1
公开(公告)日：2018-03-15
申请号：US15560051
申请日：2016-03-10
Applicant: THK CO., LTD.
Inventor： Junichi Sakai , Kaoru Hoshide , Shigeo Tomita , Yuki Nakamura , Nobuyuki Maki , Muten Iwamoto , Kazuya Horiike , Kenji Narata , Katsunori Yamamura , Fukuji Nakano , Shigemi Nakamura , Yosuke Irie
CPC classification number: F16C29/0607 , F16C29/06 , F16C29/0633
Abstract: A motion guide apparatus ensures that a retaining portion retains a rolling element. A rolling element retainer having retaining portions that prevent a rolling element from falling out of a movable body, the retaining portions extending along a loaded rolling element rolling portion, is incorporated in the movable body of the motion guide apparatus. End plates are formed integrally with the retaining portions. Fall prevention portions to reduce the widths of openings between the retaining portions are provided to center parts of the retaining portions in a length direction thereof. The fall prevention portions are padding portions integrated with the retaining portions, the padding portions rising in such a manner as to reduce the widths of the openings, and/or projections integrated with the retaining portions, the projections touching the movable body in such a manner that the center parts of the retaining portions bend toward a track member.
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公开(公告)号：US09863470B2
公开(公告)日：2018-01-09
申请号：US15127606
申请日：2015-03-30
Applicant: THK CO., LTD.
Inventor： Shigeo Tomita , Junichi Sakai , Nobuyuki Maki , Kaoru Hoshide , Katsunori Yamamura , Muten Iwamoto , Kazuya Horiike , Kenji Narata , Fukuji Nakano , Shigemi Nakamura , Yosuke Irie , Yuki Nakamura
CPC classification number: F16C29/0607 , F16C29/0602 , F16C29/0609 , F16C29/0645 , F16C29/0647 , F16C43/04 , F16C2220/02
Abstract: An object is to provide a motion guide apparatus that can facilitate an assembly operation. An end member (4a, 4b) including an inner peripheral side of a direction changing path (2c) is placed on an end surface in a movement direction of a moving member body (3). At least one of a pair of the end members (4a and 4b) includes an opening (21) linking to the inner peripheral side of the direction changing path (2c) to load rolling elements (42) into a circulation path. Opposing surfaces (18) of the pair of the end members (4a and 4b) to the moving member body (3) are formed in flat surfaces. The pair of the end members (4a and 4b) molded integrally with a holding portion (5) is incorporated into the moving member body (3) in a direction orthogonal to the movement direction of the moving member body (3). A lid member (7a, 7b) closes the opening (21) in the end member (4a, 4b).
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公开(公告)号：US20170146059A1
公开(公告)日：2017-05-25
申请号：US15127606
申请日：2015-03-30
Applicant: THK CO., LTD.
Inventor： Shigeo Tomita , Junichi Sakai , Nobuyuki Maki , Kaoru Hoshide , Katsunori Yamamura , Muten Iwamoto , Kazuya Horiike , Kenji Narata , Fukuji Nakano , Shigemi Nakamura , Yusuke Irie , Yuki Nakamura
CPC classification number: F16C29/0607 , F16C29/0602 , F16C29/0609 , F16C29/0645 , F16C29/0647 , F16C43/04 , F16C2220/02
Abstract: An object is to provide a motion guide apparatus that can facilitate an assembly operation. An end member (4a, 4b) including an inner peripheral side of a direction changing path (2c) is placed on an end surface in a movement direction of a moving member body (3). At least one of a pair of the end members (4a and 4b) includes an opening (21) linking to the inner peripheral side of the direction changing path (2c) to load rolling elements (42) into a circulation path. Opposing surfaces (18) of the pair of the end members (4a and 4b) to the moving member body (3) are formed in flat surfaces. The pair of the end members (4a and 4b) molded integrally with a holding portion (5) is incorporated into the moving member body (3) in a direction orthogonal to the movement direction of the moving member body (3). A lid member (7a, 7b) closes the opening (21) in the end member (4a, 4b).
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Patent Agency Ranking
公开(公告)号：US20180266484A1
公开(公告)日：2018-09-20
申请号：US15754040
申请日：2016-07-22
Applicant: THK CO., LTD.
Inventor： Junichi Sakai , Kaoru Hoshide , Nobuyuki Maki , Masato Ito , Tomoya Ozaki
CPC classification number: F16C19/36 , F16C33/588 , F16C33/60 , F16C33/64 , F16C35/07 , F16C43/08 , F16C2220/40 , F16C2220/42 , F16C2220/60
Abstract: This slewing bearing includes: an inner ring having an inner-ring-side rolling-element rolling surface on an outer peripheral surface; an outer ring having an ring-side rolling-element rolling surface on an inner peripheral surface, and being arranged outside the inner ring such that the outer-ring-side rolling-element rolling surface faces the inner-ring-side rolling-element rolling surface; and a plurality of rolling elements rollably disposed on a rolling-element rolling passage formed by the inner-ring-side rolling-element rolling surface and the outer-ring-side rolling-element rolling surface. The inner ring or the outer ring is configured to have combination of a press-worked part having a contour shape formed by pressing work, and a removal-processed part including at least the inner-ring-side rolling-element rolling surface or the outer-ring-side rolling-element rolling surface formed by removal processing. Such a configuration makes it possible to provide a slewing bearing having a structure that can be manufactured at low cost while maintaining a certain performance.
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公开(公告)号：US10125813B2
公开(公告)日：2018-11-13
申请号：US15560051
申请日：2016-03-10
Applicant: THK CO., LTD.
Inventor： Junichi Sakai , Kaoru Hoshide , Shigeo Tomita , Yuki Nakamura , Nobuyuki Maki , Muten Iwamoto , Kazuya Horike , Kenji Narata , Katsunori Yamamura , Fukuji Nakano , Shigemi Nakamura , Yosuke Irie
IPC: F16C29/06
Abstract: A motion guide apparatus ensures that a retaining portion retains a rolling element. A rolling element retainer having retaining portions that prevent a rolling element from falling out of a movable body, the retaining portions extending along a loaded rolling element rolling portion, is incorporated in the movable body of the motion guide apparatus. End plates are formed integrally with the retaining portions. Fall prevention portions to reduce the widths of openings between the retaining portions are provided to center parts of the retaining portions in a length direction thereof. The fall prevention portions are padding portions integrated with the retaining portions, the padding portions rising in such a manner as to reduce the widths of the openings, and/or projections integrated with the retaining portions, the projections touching the movable body in such a manner that the center parts of the retaining portions bend toward a track member.
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公开(公告)号：US20180283449A1
公开(公告)日：2018-10-04
申请号：US15764700
申请日：2016-09-09
Applicant: THK CO., LTD.
Inventor： Kazuto Homma , Kenichi Hasebe , Toshihisa Maeda , Junichi Sakai , Nobuyuki Maki , Kaoru Hoshide
IPC: F16C29/04
Abstract: A motion guide device is formed of: a track member including a base portion extending along a longitudinal direction, and a pair of wall portions erected from both edges of the base portion in a width direction, and having rolling element rolling grooves formed along a longitudinal direction; and a moving member which is assembled in a movable manner along the longitudinal direction between the wall portions, and to which a pair of guide members are assembled, load rolling element rolling grooves which correspond to the rolling element rolling grooves being formed in the guide members, wherein at least either one of the guide members is equipped with a biasing member on a surface of the guide member on a side opposite to a surface of the guide member on which the load rolling element rolling groove is formed.
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公开(公告)号：US10972036B2
公开(公告)日：2021-04-06
申请号：US15746906
申请日：2016-07-27
Applicant: THK CO., LTD.
Inventor： Junichi Sakai , Shuhei Yamanaka , Hideo Saito , Yuki Nomura , Hideya Nakayama
IPC: H02P25/064 , F16D63/00 , F16D65/14 , H02P3/26 , F16D121/22 , F16D125/58
Abstract: A control device for controlling a linear actuator having a linear motor and a brake device includes a magnetic pole position estimation means to estimate which of a plurality of sections obtained by dividing a magnetic pole position of 0° to 360°, the mover is located in on the basis of a direction of movement of the mover by pulse energization, a magnetic pole position setting means to perform direct current excitation at an estimated magnetic pole position estimated by the magnetic pole position estimation means and set the estimated magnetic pole position as a magnetic pole position of the mover, and a brake control means to turn on a brake device before pulse energization by the magnetic pole position estimation means is performed and turn off the brake device after the magnetic pole position estimation means estimates the section in which the mover is located.
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公开(公告)号：USD789186S1
公开(公告)日：2017-06-13
申请号：US29551104
申请日：2016-01-11
Applicant: THK CO., LTD.
Designer： Junichi Sakai , Kaoru Hoshide , Nobuyuki Maki , Masato Ito , Tomoya Ozaki
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