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公开(公告)号：US20150219200A1
公开(公告)日：2015-08-06
申请号：US14425679
申请日：2013-07-10
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Xin Yue Zhang , Yoshihide Kiyosawa
IPC: F16H49/00
CPC classification number: F16H49/001 , F16H1/32 , F16H55/084 , Y10T74/19642
Abstract: A wave generator (5) for a flat-type strain wave gearing (1) has a first elliptical outer circumferential surface (6S) of a first wave generator portion (5S) defined by a first elliptical curve (C1), and a second elliptical outer circumferential surface (6D) of a second wave generator section (5D) defined by a second elliptical curve (C2). Compared to using a wave generator for which the contour is defined by a single elliptical curve, differences between the ball load distribution of the first wave generator portion (5S) and the ball load distribution of the second wave generator portion (5D) can be suppressed, both ball load distributions can be equalized, and the equivalent ball load can be reduced; therefore, an increase in the lifespan of the wave generator bearing can be achieved.
Abstract translation: 用于扁平型应变波传动装置（1）的波发生器（5）具有由第一椭圆曲线（C1）限定的第一波发生器部分（5S）的第一椭圆形外周表面（6S）和第二椭圆形 由第二椭圆曲线（C2）限定的第二波发生器部分（5D）的外圆周表面（6D）。 与使用由单个椭圆曲线限定轮廓的波发生器相比，可以抑制第一波发生器部分（5S）的球负载分布与第二波发生器部分（5D）的球载荷分布之间的差异 可以均衡两个球载荷分布，可以减小等效球载荷; 因此，可以实现波发生器轴承的寿命的增加。
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公开(公告)号：US10400667B2
公开(公告)日：2019-09-03
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
Abstract: A variable compression ratio mechanism for an internal combustion engine includes a gear reducer that varies an engine compression ratio. The gear reducer includes an input-side member connected to a rotation shaft of an actuator; an output-side member that transmits a reduced rotation of the actuator to the control shaft; a fixed member fixed to a housing of the actuator; and an intermediate member that transmits torque from the input-side member to the output-side member and the fixed member, and has a first gear portion engaged with the fixed member and a second gear portion engaged with the output-side member. A ratio of a number of teeth of the fixed gear portion to a number of teeth of the first gear portion is lower than a ratio of a number of teeth of the output-side gear portion to a number of teeth of the second gear portion.
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公开(公告)号：US10295037B2
公开(公告)日：2019-05-21
申请号：US15327830
申请日：2015-07-03
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Yoshihide Kiyosawa , Jun Handa , Noboru Takizawa , XinYue Zhang
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：US10253862B2
公开(公告)日：2019-04-09
申请号：US15322664
申请日：2015-07-03
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Yoshihide Kiyosawa , Jun Handa , Noboru Takizawa , Xin Yue Zhang
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 t(1) represents the tooth bottom rim wall thickness of the first external teeth, and t(2) represents the tooth bottom rim wall thickness of the second external teeth, the ratio of t(1)/t(2) is set to a value satisfying 0.5>t(1)/t(2)
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公开(公告)号：US10197145B2
公开(公告)日：2019-02-05
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
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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Patent Agency Ranking
公开(公告)号：US09523421B2
公开(公告)日：2016-12-20
申请号：US14400358
申请日：2013-06-20
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Yuya Murayama , Yoshihide Kiyosawa
CPC classification number: F16H49/001
Abstract: A hollow-type strain wave gearing unit has a cup-shaped flexible externally-toothed gear, in which one shaft end portion of a hollow rotation shaft of a wave generator is located. The shaft end portion is supported by a bearing mounted on a bearing holder fixed to a boss of the flexible externally-toothed gear. The bearing holder has a retainer holding portion to prevent a retainer of a wave generator bearing from coming off in the axis line direction. There is no need to dispose a retainer holding plate of the wave generator bearing inside the flexible externally-toothed gear, whereby the axial length of the hollow-type strain wave gearing unit can be reduced.
Abstract translation: 中空型应变波传动装置具有杯形的柔性外齿轮，波形发生器的中空旋转轴的一个轴端部分位于其中。 轴端部由安装在固定到柔性外齿轮的凸台的轴承座上的轴承支撑。 轴承座具有用于防止波浪发生器轴承的保持器沿轴线方向脱落的保持器保持部。 不需要将波浪发生器轴承的保持板固定在柔性外齿轮内，从而可以减小中空型应变波传动装置的轴向长度。
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公开(公告)号：US09441721B2
公开(公告)日：2016-09-13
申请号：US14646271
申请日：2013-09-12
Applicant: Harmonic Drive Systems Inc.
Inventor： Daisuke Orii , Yoshihide Kiyosawa
CPC classification number: F16H49/001 , F16H57/0404 , Y10T74/19
Abstract: A strain wave gearing unit is provided with an internal gear, which surrounds the periphery of a cup-shaped external gear, and a bearing. An annular gap is formed between the inner ring of the bearing and the internal gear. The gap communicates with the sliding portions of the bearing and the section where the two gears mesh. An annular filter member made of non-woven fabric is fitted in the gap. Foreign matter such as abrasion powder, which is contained in lubricant that flows in the gap, is trapped by the filter member. The present invention can prevent penetration of abrasion powder generated in the sliding portions into the meshing section via the gap.
Abstract translation: 应变波传动单元设置有围绕杯形外齿轮的周边的内齿轮和轴承。 在轴承的内圈和内齿轮之间形成环形间隙。 间隙与轴承的滑动部分和两个齿轮啮合的部分连通。 由无纺布制成的环形过滤构件安装在间隙中。 在间隙中流动的润滑剂中所含的诸如磨损粉末的异物被过滤构件捕获。 本发明可以防止在滑动部分中产生的磨损粉末经由间隙渗透到啮合部分中。
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公开(公告)号：US20150285357A1
公开(公告)日：2015-10-08
申请号：US14646271
申请日：2013-09-12
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Daisuke Orii , Yoshihide Kiyosawa
CPC classification number: F16H49/001 , F16H57/0404 , Y10T74/19
Abstract: A strain wave gearing unit is provided with an internal gear, which surrounds the periphery of a cup-shaped external gear, and a bearing. An annular gap is formed between the inner ring of the bearing and the internal gear. The gap communicates with the sliding portions of the bearing and the section where the two gears mesh. An annular filter member made of non-woven fabric is fitted in the gap. Foreign matter such as abrasion powder, which is contained in lubricant that flows in the gap, is trapped by the filter member. The present invention can prevent penetration of abrasion powder generated in the sliding portions into the meshing section via the gap.
Abstract translation: 应变波传动单元设置有围绕杯形外齿轮的周边的内齿轮和轴承。 在轴承的内圈和内齿轮之间形成环形间隙。 间隙与轴承的滑动部分和两个齿轮啮合的部分连通。 由无纺布制成的环形过滤构件安装在间隙中。 在间隙中流动的润滑剂中所含的诸如磨损粉末的异物被过滤构件捕获。 本发明可以防止在滑动部分中产生的磨损粉末经由间隙渗透到啮合部分中。
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公开(公告)号：US12281699B2
公开(公告)日：2025-04-22
申请号：US18560761
申请日：2021-07-20
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Yoshihide Kiyosawa
IPC: F16H57/04 , C10M103/02 , C10M103/06 , C10M107/38 , C10N20/06 , C10N50/08 , F16H49/00
Abstract: A lubrication mechanism of a strain wave gearing is disposed in an interior space of an externally toothed gear and comprises a powder-accommodating bag that stores solid lubricant powder. A diaphragm of the externally toothed gear is repeatedly deflected during the driving of the strain wave gearing. Vibration or deflection is repeatedly imparted to the powder-accommodating bag and the solid lubricant powder is discharged from a powder discharge hole formed in the powder-accommodating bag into the interior space. A site to be lubricated is lubricated with the solid lubricant powder discharged into the interior space. Harmful effects due to a large amount of the solid lubricant powder being supplied to the site to be lubricated at one time can be resolved, and a necessary amount of the solid lubricant powder can be continuously supplied to the site to be lubricated.
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公开(公告)号：US11320034B2
公开(公告)日：2022-05-03
申请号：US16754030
申请日：2017-10-31
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Yoshihide Kiyosawa , Norio Shirokoshi
IPC: F16H49/00 , F16C17/04 , F16H57/021
Abstract: A cup-type strain wave gearing having a unit structure and having: a stationary-side part including a unit housing and an internally toothed gear; a driving-side part including an output member and an externally toothed gear; and a sliding bearing supporting the stationary-side part and the driving-side part in the radial direction and the thrust direction in a state in which relative rotation is possible. The sliding bearing has a cylindrical bushing accommodated in a radial gap, and annular bushings accommodated respectively in thrust gaps. Thus, it is possible to provide an advantageous strain wave gearing having a unit structure that is more lightweight and compact than when a rolling bearing is used.
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