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公开(公告)号：US20210277964A1
公开(公告)日：2021-09-09
申请号：US17053902
申请日：2019-04-26
Applicant: NSK LTD.
Inventor： Yuya DAIKOKU , Hirotaka KISHIDA , Hiroki HASHIGUCHI , Toshirou TOYODA
Abstract: Provided is a reverse input blocking clutch capable of easily releasing a state in which rotation of an output member is prevented or suppressed.
The reverse input blocking clutch 5 includes an input member 14, an output member 15, a pressed member 16, and an engaging member 17. When a rotational torque is inputted to the input member 14, the engaging member 17 moves in a direction away from a pressed surface 28 of the pressed member 16 due to engagement with the input member 14, and transmits the rotational torque inputted to the input member 14 to the output member 15 due to engagement with the output member 15; and when rotational torque is reversely inputted to the output member 15, moves in the direction closer to the pressed surface 28 based on engagement with the output member 15, and by being pressed against the pressed surface 28 does not transmit the rotational torque reversely inputted to the output member 15 to the input member 14, or transmits only part thereof to the input member 14 due to engagement with the input member 14.-
公开(公告)号：US20220268331A1
公开(公告)日：2022-08-25
申请号：US17624896
申请日：2020-09-23
Applicant: NSK Ltd.
Inventor： Nagao DOHI , Yuya DAIKOKU , Tomoyuki MIYAZAKl
Abstract: The reverse input cutoff clutch includes: a pressed member having a pressed surface around the inner peripheral surface; an input member coaxially arranged with the pressed surface and having an input-side engaging portion arranged on the radially inner side of the pressed surface; an output member coaxially arranged with the pressed surface and having an output-side engaging portion arranged further on the radially inner side than the input-side engaging portion; and an engaging element arranged so as to be movable in a first direction as a direction toward or away from the pressed surface on the radially inner side of the pressed surface. The engaging element has a main engaging element body having a pressing surface and a pivot-support shaft, and a link member. The link member has a first end portion pivotally linked to the pivot-support shaft, and a second end portion pivotally linked to the input-side engaging portion.
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公开(公告)号：US20220060084A1
公开(公告)日：2022-02-24
申请号：US17274869
申请日：2019-09-11
Applicant: NSK LTD.
Inventor： Hirotaka KISHIDA , Toshirou TOYODA , Yuya DAIKOKU
Abstract: The electric motor with a reverse input cutoff clutch has an output shaft. The output shaft is configured by connecting a first shaft and a second shaft that are coaxially arranged with each other via the reverse input cutoff clutch. The second shaft is rotatably supported to a housing by one radial bearing. The reverse input cutoff clutch has a function that, when rotational torque is inputted to the first shaft, transmits the rotational torque inputted to the first shaft to the second shaft, and when rotational torque is reversely inputted to the second shaft, completely cuts off the rotational torque reversely inputted to the second shaft, and does not transmit the rotational torque to the first shaft, or transmits a part of the rotational torque to the first shaft, and cuts off the remaining part.
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Patent Agency Ranking
公开(公告)号：US20240044377A1
公开(公告)日：2024-02-08
申请号：US18266654
申请日：2022-01-28
Applicant: NSK Ltd.
Inventor： Nagao DOHI , Yuya DAIKOKU
Abstract: A reverse-input blocking clutch, comprising a pressed member, an input member, an output member, and an engaging element, the pressed member including a first pressed member element having a pressed surface around an inner peripheral surface thereof and a second pressed member element having a mounting portion fixed to a portion that does not rotate during use, the engaging element configured to transmit rotational torque input to the input member to the output member by moving in a direction away from the pressed surface and to completely block rotational torque reversely input to the output member or transmit a part of the rotational torque reversely input to the output member to the input member and block a remaining part thereof.
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公开(公告)号：US20210262532A1
公开(公告)日：2021-08-26
申请号：US16634992
申请日：2018-07-27
Applicant: NSK LTD.
Inventor： Toshirou TOYODA , Kota FUKUDA , Hiroki NISHII , Yuya DAIKOKU , Yuka KANEKO
Abstract: The reverse input shutoff clutch includes: an input member, an output member coaxially arranged with the input member, a pressed member having a pressed surface, and an engaging element. The engaging element, when rotational torque is inputted to the input member, moves in a direction away from the pressed surface due to engagement with the input member and transmits the rotational torque to the output member, and when rotational torque is reversely inputted to the output member, moves in a direction toward the pressed surface due to engagement with the output member, and prevents or suppresses relative rotation between the output member and the pressed member.
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公开(公告)号：US20230179063A1
公开(公告)日：2023-06-08
申请号：US17997977
申请日：2022-01-25
Applicant: NSK LTD.
Inventor： Nagao DOHI , Yuya DAIKOKU , Eiji INOUE
Abstract: An output shaft is configured by connecting a first shaft and a second shaft, coaxially arranged with each other, by a reverse input cutoff clutch 20; an end portion on one side in an axial direction of the second shaft located on an opposite side from the first shaft with a gear portion sandwiched in between in the axial direction being rotatably supported with respect to a fixed portion by a bearing device; the reverse input cutoff clutch having a function that, when rotational torque is input to the first shaft, transmits the rotational torque input to the first shaft to the second shaft, and when rotational torque is reversely input to the second shaft, completely cuts off the rotational torque reversely input to the second shaft and does not transmit the rotational torque to the first shaft, or transmits part of the rotational torque to the first shaft and cuts off the remaining portion.
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公开(公告)号：US20220205495A1
公开(公告)日：2022-06-30
申请号：US17596524
申请日：2020-11-25
Applicant: NSK LTD.
Inventor： Nagao DOHI , Yuya DAIKOKU
Abstract: The reverse input cutoff clutch comprises a pressed member having a pressed surface, an input member arranged coaxially with the pressed surface and having an input-side engaging portion arranged radially inside the pressed surface, an output member arranged coaxially with the pressed surface and having an output-side engaging portion arranged more radially inside than the input-side engaging portion, and an engaging element arranged radially inside the pressed surface and having a pressing surface facing the pressed surface, an input-side engaged portion that engages with the input-side engaging portions, and an output-side engaged portion that engages with the output-side engaging portion. The output-side engaged portion is configured by a recessed portion, and the interior surface of the recessed portion has a pair of guided surfaces. The output-side engaging portion has a pair of guide surfaces facing the pair of guided surfaces.
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公开(公告)号：US20200148264A1
公开(公告)日：2020-05-14
申请号：US16609070
申请日：2018-10-12
Applicant: NSK LTD.
Inventor： Yuya DAIKOKU , Yasuyuki MATSUDA
Abstract: A universal joint includes: a housing; an arm, part of which is located inside the housing; an external bush that is located between an inner circumferential surface of the housing and the arm; an internal bush that is located on the opposite side of the external bush with the arm being interposed therebetween; and a supporting member that supports the internal bush. The arm includes: an arm convex surface that is a spherical convex surface; and an arm concave surface that is a spherical concave surface. The external bush includes a bush concave surface that is a spherical concave surface in contact with the arm convex surface. The internal bush includes a bush convex surface that is a spherical convex surface in contact with the arm concave surface.
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