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公开(公告)号：US20210324948A1
公开(公告)日：2021-10-21
申请号：US16328789
申请日：2017-09-07
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Xin Yue Zhang , Yoshihide Kiyosawa
Abstract: A strain wave gearing has a wave generator provided with a rigid plug and a wave bearing. The wave bearing is of a deep groove bearing type and is mounted on an elliptical outer circumferential surface of the rigid plug, whereby outer race and inner race thereof are flexed into an elliptical shape. Where D is a ball diameter of the balls, Ro is a raceway-surface radius of the outer race, Ri is a raceway-surface radius of the inner race, Ro/D is an outer-race conformity, and Ri/D is an inner-race conformity, the outer-race conformity Ro/D is greater than the inner-race conformity Ri/D. The friction torque of the wave bearing can be reduced while maintaining the practical service life thereof to be the same level as in a conventional one.
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公开(公告)号：US10132398B2
公开(公告)日：2018-11-20
申请号：US15126329
申请日：2014-03-31
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Masaru Kobayashi , Yoshihide Kiyosawa
Abstract: A wave plug of a wave generator of a wave gear device includes: a metallic outer hollow body with an elliptical wave plug outer circumferential surface formed thereon; a metallic inner hollow body with a wave plug inner circumferential surface formed thereon; and an intermediate hollow body sandwiched between the outer hollow body and the inner hollow body. The intermediate hollow body includes CFRP layers. It is possible to implement a light wave plug in which a big hollow portion can be formed while assuring a required rigidity. Using the wave plug makes it possible to implement a light wave gear device which allows jumping to occur at a high load torque and which includes a big hollow portion.
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公开(公告)号：US09435418B2
公开(公告)日：2016-09-06
申请号：US14396504
申请日：2013-05-08
Applicant: Harmonic Drive Systems Inc.
Inventor： Tatsuro Hoshina , Yoshihide Kiyosawa
CPC classification number: F16H49/001 , F16C19/06 , F16C19/44 , F16C19/46 , F16C19/54 , F16C19/55 , F16C41/001 , F16H2049/003
Abstract: A wave generator of a hollow strain wave gearing has a rigid plug and a needle roller bearing. The needle roller bearing has an inner ring trajectory surface formed in the plug external peripheral surface, a flexible outer ring, an outer ring trajectory surface formed in an inner peripheral surface of the outer ring, and needle rollers. An inner ring trajectory groove is formed in the plug external peripheral surface, and the inner ring trajectory surface is formed in a groove bottom surface of the inner ring trajectory groove. Inner-ring-side restricting surfaces for restricting the needle rollers from moving in the center axis direction are formed in groove side surfaces on both sides of the inner ring trajectory groove. A wave generator can be obtained, which is suitable for increasing the hollow diameter of a strain wave gearing.
Abstract translation: 中空应变波传动装置的波发生器具有刚性塞子和滚针轴承。 滚针轴承具有形成在插塞外周面中的内环轨迹面，柔性外圈，形成在外圈内周面的外圈轨迹面以及滚针。 内圈轨迹槽形成在插塞外周面上，内圈轨迹面形成在内圈轨迹槽的槽底面。 在内圈轨迹槽的两侧的槽侧面形成有用于限制针辊在中心轴方向移动的内圈侧限制面。 可以获得波浪发生器，其适用于增加应变波传动装置的中空直径。
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公开(公告)号：US20150285356A1
公开(公告)日：2015-10-08
申请号：US14437213
申请日：2013-09-11
Applicant: HARMONIC DRIVE SYSTEMS INC.
Inventor： Junichi Kurogi , Yoshihide Kiyosawa
IPC: F16H49/00
CPC classification number: F16H49/001 , Y10T74/19
Abstract: A wave generator of a strain wave gearing has a plug, a wave generator bearing mounted to an outer peripheral surface of the plug, an input shaft protruding from the center of the plug to a first side running along a center axis, and a bearing arrangement on which a support bearing supporting the input shaft is arranged. Relative to an outer ring end surface of the wave generator bearing that faces the first side, a center-side plug end surface of a plug end surface facing the same direction is in a position withdrawn from the first side toward the opposite direction. The bearing arrangement is provided between the center-side plug end surface and the outer ring end surface encircling the input shaft. The input shaft can be fitted within the width dimension of the wave generator, and a strain wave gearing having a short axial length can be achieved.
Abstract translation: 应变波传动装置的波发生器具有插头，安装在插头的外周面的波发生器轴承，从插头的中心突出到沿着中心轴延伸的第一侧的输入轴，以及轴承装置 在其上布置有支撑输入轴的支撑轴承。 相对于波浪发生器轴承的面向第一侧的外环端面，面向相同方向的塞头端面的中心侧塞端面处于从第一侧向相反方向退出的位置。 轴承装置设置在中心侧塞头端面和环绕输入轴的外圈端面之间。 输入轴可以安装在波浪发生器的宽度尺寸内，可以实现轴向长度短的应变波传动装置。
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公开(公告)号：USD971978S1
公开(公告)日：2022-12-06
申请号：US35511524
申请日：2020-09-09
Applicant: HARMONIC DRIVE SYSTEMS INC.
Designer： Hiroaki Kimura , Yoshihide Kiyosawa , Jun Handa
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Patent Agency Ranking
公开(公告)号：USD937332S1
公开(公告)日：2021-11-30
申请号：US35511076
申请日：2020-06-30
Applicant: HARMONIC DRIVE SYSTEMS INC.
Designer： Hiroaki Kimura , Jun Handa , Yoshihide Kiyosawa
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公开(公告)号：US10393227B2
公开(公告)日：2019-08-27
申请号：US15500605
申请日：2014-08-06
Applicant: Harmonic Drive Systems Inc.
Inventor： Jun Handa , Yoshihide Kiyosawa , Noboru Takizawa , Xin Yue Zhang
Abstract: A relieving portion is formed between a first external tooth portion and a second external tooth portion in the external teeth of a flexible externally toothed gear of a flat strain wave gearing. The length L1 of the relieving portion in the tooth trace direction is within the range of 0.1 to 0.5 of the tooth width L of the external teeth. The maximum relieving amount t from the tooth top land of an external tooth in the relieving portion is 3.3×10−4
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公开(公告)号：US10006534B2
公开(公告)日：2018-06-26
申请号：US14890605
申请日：2013-06-20
Applicant: Harmonic Drive Systems Inc.
Inventor： Yuya Murayama , Yoshihide Kiyosawa
CPC classification number: F16H49/001 , F16C25/083
Abstract: In this hollow strain wave gearing unit, a shaft end part of a hollow rotary shaft of a wave generator is located inside a cup-shaped flexible external gear. The shaft end part is supported by a bearing attached to a bearing holder that is fixed to a boss of the flexible external gear. In the bearing holder, an elastic leaf spring part that is displaceable in the axial direction constitutes a part that supports a holder body part that holds the bearing. A preload is applied by the leaf spring part to the bearing in the axial direction. Thus, there is no need to separately arrange a preload application member inside the flexible external gear, and the axial length of the hollow strain wave gearing unit can be shortened.
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公开(公告)号：US09772021B2
公开(公告)日：2017-09-26
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.
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公开(公告)号：US09382993B2
公开(公告)日：2016-07-05
申请号：US14398749
申请日：2013-06-20
Applicant: Harmonic Drive Systems Inc.
Inventor： Yuya Murayama , Yoshihide Kiyosawa
IPC: F16H37/00 , F16H49/00 , F16H57/029 , F16H57/04 , F16H57/02
CPC classification number: F16H49/001 , F16H57/029 , F16H57/0454 , F16H2057/02073
Abstract: A hollow-type strain wave gearing unit (1) has a sealing member (14) for sealing a gap (15) opening to the inner peripheral surface of a unit hollow portion (5) passing through in an axis (1a) direction. The gap (15) includes a gap section (15b) between an outer peripheral side end race (48b) on the wave generator side and a boss side end face (108), both faces opposing each other in the axis (1a) direction, and the sealing member (14) is assembled therein. The gap section (15b) is formed in a state partially entering the inside of the inner ring (11b) of the second bearing (11) supporting the wave generator (4). It is possible to realize a hollow-type strain wave gearing unit with a sealing mechanism that is suitable for increasing the inner diameter of the unit hollow portion and for reducing the unit axial length.
Abstract translation: 中空型应变波传动单元（1）具有密封部件（14），该密封部件（14）用于密封通向沿轴线（1a）方向通过的单元中空部分（5）的内周面的间隙（15）。 间隙（15）包括在波浪发生器侧的外周侧端部座圈（48b）和凸起侧端面（108）之间的沿轴线（1a）方向相对的两个面的间隙部（15b） 并且密封构件（14）组装在其中。 间隙部（15b）形成为部分地进入支撑波发生器（4）的第二轴承（11）的内圈（11b）的内部的状态。 可以实现具有密封机构的中空型应变波传动单元，该密封机构适于增加单元中空部分的内径并减小单元轴向长度。
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