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公开(公告)号：US20180320770A1
公开(公告)日：2018-11-08
申请号：US15772277
申请日：2015-11-17
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Jun HANDA , Hiroaki KIMURA , Sotaro MIYAKE
IPC: F16H49/00
CPC classification number: F16H49/001 , F16H1/32 , F16H2049/003
Abstract: A foreign-matter intrusion preventing mechanism of a strain wave gearing is provided with a filter attachment plate attached to a wave generator plug and a filter attached to the ellipsoidal outer peripheral surface of the filter mounting plate. Lubricant flows, via the filter, between a wave generator bearing and a meshing portion between an external gear and an internal gear. Foreign matters included in the lubricant are captured by the filter. Because the filter is in contact with the inner peripheral surface of an external-tooth forming portion of the external gear, foreign matters can be assuredly prevented from intruding into a sliding friction portion between an outer-ring outer peripheral surface of the wave generator bearing and the inner peripheral surface of the external-tooth forming portion of the external gear.
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公开(公告)号：US20180195433A1
公开(公告)日：2018-07-12
申请号：US15578506
申请日：2016-04-22
Inventor： Ryosuke HIYOSHI , Yoshiaki TANAKA , Yoshihide KIYOSAWA , Jun HANDA , Kishiro NAGAI , Junichiro ONIGATA , Yoshihiko YAMADA
CPC classification number: F02B75/045 , F02B75/04 , F02B75/32 , F02D15/02 , F16H1/28 , F16H1/32 , F16H2001/323
Abstract: Disclosed is a variable compression ration mechanism in which a control shaft is rotated and driven by an electric motor through a wave gear reducer. The wave gear reducer includes: a first internal gear member; an external gear member arranged concentrically inside the internal gear member; a wave generator arranged inside the external gear member; and a second internal gear member, wherein a ratio of the number of teeth of a fixed gear portion of the first internal gear member to the number of teeth of a first gear portion of the external gear member is set lower than a ratio of the number of teeth of an output-side gear portion of the second internal gear member to the number of teeth of a second gear portion of the external gear member.
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公开(公告)号：US20170211677A1
公开(公告)日：2017-07-27
申请号：US15327830
申请日：2015-07-03
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Yoshihide KIYOSAWA , Jun HANDA , Noboru TAKIZAWA , XinYue ZHANG
IPC: F16H49/00
CPC classification number: F16H49/001 , F16H1/32 , F16H55/12 , F16H2049/003
Abstract: An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth having different tooth numbers, and is flexed into an ellipsoidal shape by a wave generator. When the theoretical values of the radial flexing amounts at major-axis positions of the first and second external teeth flexed into the ellipsoidal shape are expressed by d1=m1n1 and d2=m2n2 (m1 and m2 represent the modules of the first and second external teeth, and n1 and n2 represent positive integers), the radial flexing amount of the first and second external teeth flexed by the wave generator satisfies d=(d1+d2)/ω (1.4≦ω≦2.6). Accordingly, a dual-type strain wave gearing can be achieved with which the first and second external teeth having different numbers can be suitably flexed to form excellent mating states with respective internally toothed gears.
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公开(公告)号：US20240044401A1
公开(公告)日：2024-02-08
申请号：US18170580
申请日：2023-02-17
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Nozomu TANIOKA , Jun HANDA
IPC: F16H49/00
CPC classification number: F16H49/001 , F16H2057/0062
Abstract: A strain wave gearing has three components and a temporary-fixing jig, three components being an internally toothed gear, a cup-shaped externally toothed gear, and a wave generator. The temporary-fixing jig is securely fastened to an output shaft fixed to the externally toothed gear by a temporary-fixing bolt and is securely fastened to an input shaft fixed to a cam plate of the wave generator by a temporary-fixing bolt. The temporary-fixing jig engages with the output shaft and the input shaft and maintains the three components in an assembled state. There is no need for an operation for adjusting the positions of the three components in an operation for attaching the strain wave gearing to a motor. After the strain wave gearing has been attached to the motor, the temporary-fixing jig is removed from the strain wave gearing, wherefore less space is required for installation.
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公开(公告)号：US20240044400A1
公开(公告)日：2024-02-08
申请号：US18164856
申请日：2023-02-06
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Kazumasa FURUTA , Nozomu TANIOKA , Jun HANDA
IPC: F16H49/00 , F16H57/023 , F16H57/021
CPC classification number: F16H49/001 , F16H57/023 , F16H57/021
Abstract: In a strain wave gearing, both of a pulley for transmitting rotation in a direction orthogonal to a rotation central axis and an output shaft are arranged on an axial-direction first side relative to a cup-shaped externally toothed gear. The input shaft, which transmits input rotation from the pulley to the wave generator, functions as a support shaft for both the pulley and the wave generator and is supported at both ends by the first and second bearings. A mechanism for transmitting rotation from the pulley to the wave generator, and a mechanism for supporting the rotation-transmitting mechanism, can be made compact, and support strength can also be ensured.
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Patent Agency Ranking
公开(公告)号：US20180363750A1
公开(公告)日：2018-12-20
申请号：US15781751
申请日：2015-12-11
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Jun HANDA , Hiroaki KIMURA , Sotaro MIYAKE
IPC: F16H49/00 , F16H57/021
Abstract: A restraint mechanism for limiting the movement of the flexible external gear of a flat strain wave gearing in the axial direction has a first restraining member installed in a floating state in a first recess and a second restraining member installed in a floating state in a second recess. The restraining member is able to limit the movement of the flexible external gear in the axial direction to a range in which there are no difficulties during actual use. Moreover, compared with when movement of the flexible external gear is limited using members that are disposed at fixed positions, it is possible to reduce the sliding abrasion that occurs between the flexible external gear and the first and second restraining members.
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公开(公告)号：US20180245678A1
公开(公告)日：2018-08-30
申请号：US15753600
申请日：2015-09-17
Applicant: Harmonic Drive Systems Inc.
Inventor： Jun HANDA , Sotaro MIYAKE , Hiroaki KIMURA , Hideo YASUE
CPC classification number: F16H49/001 , F16H1/00
Abstract: A wave generator for a strain wave gearing makes a flexible externally toothed gear to flex into an elliptical shape and mesh with rigid internally toothed gears, and makes meshing positions of the flexible externally toothed gear with the both gears to move in a circumferential direction. On the inner side of a rigid plug of the wave generator, a plug support ring is secured and integrated. The rigid plug is formed from an iron-based material, and the plug support ring is formed from a high-rigidity material that is more rigid than the iron-based material. Since deformation of the rigid plug is suppressed, the wave generator provided with a large hollow part can be obtained.
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公开(公告)号：US20180163622A1
公开(公告)日：2018-06-14
申请号：US15578432
申请日：2016-04-22
Inventor： Ryosuke HIYOSHI , Yoshiaki TANAKA , Yoshihide KIYOSAWA , Jun HANDA , Kishiro NAGAI , Junichiro ONIGATA , Yoshihiko YAMADA
CPC classification number: F02B75/045 , F02B75/04 , F02B75/32 , F02D15/02 , F16H1/28 , F16H1/32 , F16H2001/323
Abstract: Disclosed is a variable compression ration mechanism in which a control shaft is rotated and driven by an electric motor through a wave gear reducer. The wave gear reducer includes: a first internal gear member; an external gear member arranged concentrically inside the internal gear member; a wave generator having an oval outer shape and arranged inside the external gear member; and a second internal gear member, wherein a ratio of the number of teeth of a fixed gear portion of the first internal gear member to the number of teeth of a first gear portion of the external gear member is set greater than a ratio of the number of teeth of an output-side gear portion of the second internal gear member to the number of teeth of a second gear portion of the external gear member.
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公开(公告)号：US20230035665A1
公开(公告)日：2023-02-02
申请号：US17964081
申请日：2022-10-12
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Hiroaki KIMURA , Yoshihide KIYOSAWA , Jun HANDA
IPC: F16H49/00 , F16H57/021
Abstract: A strain wave gearing unit has a unit housing, a strain wave gearing, and a bearing device. Balls of a bearing part of the bearing device are positioned on the diametrically outer side with respect to a cylindrical barrel part of an externally toothed gear. The diameter S of the balls is 0.05 to 0.15 times the pitch diameter D of the externally toothed gear. The centers of the balls are positioned between a point at a distance of 1.2 times the diameter S toward the cylindrical-barrel-part side from an inner-side end surface of a diaphragm along a center axis and a point at a distance of 1 times the diameter S toward a side opposite the cylindrical barrel part from the inner-side end surface. The bearing device can be configured to be used in common for strain wave gearing units having different axial lengths.
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公开(公告)号：US20180187764A1
公开(公告)日：2018-07-05
申请号：US15740183
申请日：2015-07-07
Applicant: Harmonic Drive Systems Inc.
Inventor： Jun HANDA , Hiroaki KIMURA , Sotaro MIYAKE
CPC classification number: F16H49/001 , F16C19/16 , F16C33/38 , F16C2361/61
Abstract: A wave generator of a flat-type strain wave gearing has an insertion member disposed between two wave bearings. The insertion member is pressed into an elliptical outer peripheral surface of a plug and is fixed thereto by an adhesive. An inner ring contact part of the insertion member is in contact with inner rings of the wave bearings from the direction of a center axis. When the flat-type strain wave gearing is in an operating state, the wave bearings can be prevented from moving relative to the plug in the direction of the center axis by means of thrust force acting on the wave bearings.
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