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公开(公告)号：US20180180146A1
公开(公告)日：2018-06-28
申请号：US15738172
申请日：2015-07-07
Applicant: Harmonic Drive Systems Inc.
Inventor： Jun HANDA , Hiroaki KIMURA , Sotaro MIYAKE
CPC classification number: F16H35/10 , F16H49/001 , F16H2049/003
Abstract: In a rotation transmission mechanism that transmits the rotational driving force of a motor to a load-side member via a speed reducer, a strain wave gearing is used as the speed reducer, and the allowable load torque of members in the powertrain other than the strain wave gearing is greater than a predetermined upper-limit load torque. The allowable load torque of the strain wave gearing is dictated by the ratcheting torque, which is set so as not to exceed the upper-limit load torque. In an overload state, ratcheting is generated in the strain wave gearing, so that the strain wave gearing functions as a mechanical fuse. Other power transmission members can be protected from an overload state without adding a separate member such as a torque limiter.
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公开(公告)号：US20170211678A1
公开(公告)日：2017-07-27
申请号：US15327841
申请日：2015-07-03
Applicant: Harmonic Drive Systems Inc.
Inventor： Yoshihide KIYOSAWA , Jun HANDA , XinYue ZHANG , Noboru TAKIZAWA
IPC: F16H49/00
CPC classification number: F16H49/001 , F16H1/32 , F16H2049/003
Abstract: An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth having different teeth numbers. The first and second external teeth are flexed by a wave generator by the same flexing amount, into an ellipsoidal shape. The tooth depth of tooth profiles of the first external teeth having a low teeth number is smaller than the tooth depth of tooth profiles of the second external teeth having a high teeth number. A dual-type strain wave gearing can be achieved with which the first and second external teeth having different teeth numbers can be suitably flexed to form excellent meshing states with respective internally toothed gears.
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公开(公告)号：US20160178045A1
公开(公告)日：2016-06-23
申请号：US14910340
申请日：2013-08-06
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Jun HANDA , Yu NAKAGAWA , Yoshihide KIYOSAWA
IPC: F16H49/00
CPC classification number: F16H49/001
Abstract: A reduction drive-side mounting end face on a strain wave gearing reduction drive unit has a circular center hole, and a motor-side mounting end face on a motor has a circular projection. The strain wave gearing reduction drive unit and motor are coaxially mounted by the circular projection being fit into the circular center hole with a regulating ring therebetween. The regulating ring, which regulates the motion of a flexible external gear, can be easily mounted to the strain wave gearing reduction drive unit by using the motor. The strain wave gearing reduction drive unit can be mounted to a motor comprising a circular projection with a different outer diameter by using a regulating ring with a different inner diameter.
Abstract translation: 应变波减速驱动单元上的减速驱动侧安装端面具有圆形的中心孔，并且马达上的电动机侧安装端面具有圆形突起。 应变波齿轮减速驱动单元和马达通过圆形突出部同轴地安装在圆形中心孔中，其间具有调节环。 通过使用电动机，可以容易地将调节环形柔性外齿轮的运动的调节环安装到应变波减速驱动单元。 应变波减速驱动单元可以通过使用具有不同内径的调节环来安装到包括具有不同外径的圆形突起的马达。
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公开(公告)号：US20200056653A1
公开(公告)日：2020-02-20
申请号：US16346941
申请日：2018-08-30
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Hiroaki KIMURA , Jun HANDA
Abstract: An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth having different teeth numbers, and a gap formed between these teeth as a cutter clearance area for tooth cutters. Where L1 is the maximum width of the gap, t1 is a depth from the tooth top land of the first external teeth to the deepest part of the gap, h1 is the tooth depth of the first external teeth, t2 is a depth from the tooth top land of the second external teeth to the deepest part, and h2 is the tooth depth of the second external teeth, any one of the following conditions 1 to 3 is satisfied: L1=0.1L−0.35L, t1=0.9h1−1.3h1, and t2=0.3h2−0.9h2 Condition 1: L1=0.1L−0.35L, t1=0.3h1−0.9h1, and t2=0.9h2−1.3h2 Condition 2: L1=0.1L−0.35L, t1=0.3h1−0.9h1, and t2=0.3h2−0.9h2 Condition 3: It is possible to obtain a dual-type strain wave gearing in which wear resistance and tooth bottom fatigue strength are increased.
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公开(公告)号：US20190203819A1
公开(公告)日：2019-07-04
申请号：US15322640
申请日：2015-07-03
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Jun HANDA , Yoshihide KIYOSAWA , Noboru TAKIZAWA , Xin Yue ZHANG
CPC classification number: F16H49/001 , F16H1/32 , F16H55/08 , F16H55/0833
Abstract: An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth having different teeth numbers, and a gap formed between these teeth as a cutter clearance area for tooth cutters. The maximum width L1 of the gap is 0.1 to 0.3 times the width L of the externally toothed gear. The depth from the tooth top land of the first external teeth to the deepest part of the gap is 0.9 to 1.3 times the depth of the first external teeth, and the depth from the tooth top land of the second external teeth to the deepest part of the gap is 0.9 to 1.3 times the depth of the second external teeth. The tooth bottom fatigue strength of the externally toothed gear provided with differing numbers of first and second external teeth is increased.
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Patent Agency Ranking
公开(公告)号：US20170211679A1
公开(公告)日：2017-07-27
申请号：US15327866
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 , F16H2049/003
Abstract: An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth having different teeth 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 amounts of the first and second external teeth flexed by the wave generator satisfy d1a=ωd1 and d2a=ωd2, where 1.25≦ω≦3. 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：US20170198802A1
公开(公告)日：2017-07-13
申请号：US15327750
申请日：2015-07-03
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Yoshihide KIYOSAWA , Jun HANDA , Xin Yue ZHANG , Noboru TAKIZAWA
CPC classification number: F16H49/001 , F16C19/06 , F16C2370/00 , F16H1/32 , F16H2049/003
Abstract: An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth having different teeth numbers. The first and second external teeth are flexed by a wave generator by the same flexing amount, into an ellipsoidal shape. The average pressure angle of main-tooth-surface sections of tooth profiles of the first external teeth having a low teeth number is less acute than the average pressure angle of main-tooth-surface sections of tooth profiles of the second external teeth having a high teeth number. Accordingly, a dual-type strain wave gearing can be achieved with which the first and second external teeth having different teeth numbers can be suitably flexed to form excellent meshing states with respective internally toothed gears.
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公开(公告)号：US20210404544A1
公开(公告)日：2021-12-30
申请号：US17191775
申请日：2021-03-04
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：US20210033178A1
公开(公告)日：2021-02-04
申请号：US17076364
申请日：2020-10-21
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Jun HANDA , Hiroaki KIMURA , Sotaro MIYAKE
Abstract: In a rotation transmission mechanism that transmits the rotational driving force of a motor to a load-side member via a speed reducer, a strain wave gearing is used as the speed reducer, and the allowable load torque of members in the powertrain other than the strain wave gearing is greater than a predetermined upper-limit load torque. The allowable load torque of the strain wave gearing is dictated by the ratcheting torque, which is set so as not to exceed the upper-limit load torque. In an overload state, ratcheting is generated in the strain wave gearing, so that the strain wave gearing functions as a mechanical fuse. Other power transmission members can be protected from an overload state without adding a separate member such as a torque limiter.
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公开(公告)号：US20210033177A1
公开(公告)日：2021-02-04
申请号：US17076194
申请日：2020-10-21
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Jun HANDA , Hiroaki KIMURA , Sotaro MIYAKE
Abstract: In a rotation transmission mechanism that transmits the rotational driving force of a motor to a load-side member via a speed reducer, a strain wave gearing is used as the speed reducer, and the allowable load torque of members in the powertrain other than the strain wave gearing is greater than a predetermined upper-limit load torque. The allowable load torque of the strain wave gearing is dictated by the ratcheting torque, which is set so as not to exceed the upper-limit load torque. In an overload state, ratcheting is generated in the strain wave gearing, so that the strain wave gearing functions as a mechanical fuse. Other power transmission members can be protected from an overload state without adding a separate member such as a torque limiter.
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