公开(公告)号：US12117065B2

公开(公告)日：2024-10-15

申请号：US17057307

申请日：2019-05-17

Applicant: TQ-Systems GmbH

Inventor： Antonius Georg Rossberger

IPC: F16H49/00 ,  F16G1/28 ,  B62M9/00

CPC classification number: F16G1/28 ,  F16H49/001 ,  B62M9/00 ,  F16H2049/003

Abstract: Toothed belt with an internal toothing and an external toothing and transmission with such a toothed belt. Tooth crests of the internal toothing comprise a rounded region with a cross section in the shape of a segment of a circle, and tooth crests of the external toothing comprise a rounded region with a cross section in the shape of a segment of a circle. A region between two adjacent tooth crests of the internal toothing is at least as wide as a tooth width of teeth of the internal toothing, and a region between two adjacent tooth crests of the external toothing is at least as wide as a tooth width of teeth of the external toothing.

公开(公告)号：US20240337312A1

公开(公告)日：2024-10-10

申请号：US18621391

申请日：2024-03-29

Applicant: Goodrich Actuation Systems Limited

Inventor： Andrew Robert HAWKSWORTH ,  Saranjit KULAR

IPC: F16H49/00

CPC classification number: F16H49/001 ,  F16H2049/003

Abstract: A strain wave gear system includes a circular spline arranged around a longitudinal axis, a flexible spline within and coaxial with the circular spline and a wave generator within and coaxial with the flexible spline. The wave generator is non-circular in a plane perpendicular to the longitudinal axis. The flexible spline is arranged to flex in response to rotation of the wave generator. The wave generator is configured to rotate about the longitudinal axis such that the flexible spline is arranged to selectively engage with the circular spline. The strain wave gear system further includes a bearing arrangement between and coaxial with the wave generator and the flexible spline. The bearing arrangement comprises a plurality of bearings and a cage arranged to retain the plurality of bearings. The plurality of bearings are located at more than two axial positions within the cage.

公开(公告)号：US20240318708A1

公开(公告)日：2024-09-26

申请号：US18188800

申请日：2023-03-23

Applicant: Hamilton Sundstrand Corporation

Inventor： Derick S. Balsiger ,  Keith A. Bloxham

IPC: F16H37/12 ,  B64C13/38 ,  F16D27/118 ,  F16D48/06 ,  F16H49/00 ,  F16H57/021

CPC classification number: F16H37/122 ,  B64C13/38 ,  F16D27/118 ,  F16D48/064 ,  F16H49/001 ,  F16H57/021 ,  F16D2500/10418 ,  F16D2500/10462 ,  F16D2500/1107 ,  F16H2049/003 ,  F16H2057/02034

Abstract: A harmonic drive, having: a housing; an output shaft within the housing; an input shaft within the housing, the input shaft is configured for being in a first position in which rotation of the input shaft rotates the output shaft, and a second position that is axially offset from the first position, in which rotation of the input shaft does not rotate the output shaft; a solenoid coil within the housing that, when energized, moves the input shaft to the second position; and a spring within the housing that, when the solenoid coil is not energized, moves the input shaft to the first position.

公开(公告)号：US20240309945A1

公开(公告)日：2024-09-19

申请号：US18576392

申请日：2021-09-21

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Masaru KOBAYASHI

IPC: F16H49/00 ,  F16H57/02 ,  G01L5/12

CPC classification number: F16H49/001 ,  F16H57/02 ,  G01L5/12 ,  F16H2049/003

Abstract: In the interior of a device housing of a strain wave gearing, a detection mechanism is incorporated at a site on the outer peripheral side of a hub of a wave generator. The hub of the wave generator is linked to a motor shaft so that axial force does not act thereon. The detection mechanism detects minute displacements in the axial direction that occur in the hub of the wave generator due to thrust acting on the wave generator. Thrust acting on the wave generator is obtained on the basis of the detected minute displacements. With this strain wave gearing in which the detection mechanism is incorporated, operation control that is responsive to sensed thrust is possible through the use of thrust information during operation.

公开(公告)号：US20240301944A1

公开(公告)日：2024-09-12

申请号：US18574880

申请日：2021-08-31

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Masaru KOBAYASHI

IPC: F16H49/00 ,  F16D55/02 ,  F16D57/00 ,  F16D65/00

CPC classification number: F16H49/001 ,  F16D55/02 ,  F16D57/002 ,  F16D65/005 ,  F16H2049/003

Abstract: A strain wave gearing is provided with: a rigid internally toothed gear; a flexible externally toothed gear that is arranged coaxially on the inside of the internally toothed gear; and a wave generator that is arranged coaxially on the inside of the externally toothed gear, and, on the inside of the externally toothed gear, in addition to the wave generator, a brake mechanism that constrains or prevents the rotation of the wave generator is installed. Since the empty space on the inside of the external gear is used as a space for installing the brake mechanism, the strain wave gearing with a brake can be realized without increasing the axial length thereof. Accordingly, by using the strain wave gearing, an axially short, flat actuator with a brake can be realized.

公开(公告)号：US20240295256A1

公开(公告)日：2024-09-05

申请号：US18594133

申请日：2024-03-04

Applicant: Goodrich Actuation Systems Limited

Inventor： Jack William TIMMS ,  Neil Stuart WHITFIELD ,  Jonathan Alan DARBY

IPC: F16H19/08 ,  B64C13/28 ,  F16H49/00

CPC classification number: F16H19/08 ,  B64C13/28 ,  F16H49/001 ,  F16H2019/085 ,  F16H2049/003

Abstract: An actuator includes an input shaft, a wave generator, a pair of flex splines, a pair of earth annuli, and an output annulus. Each of the pair of flex splines are earthed to an earth annulus. The output annulus comprises a circular spline. The wave generator is configured to be activated by rotation of the input shaft, and the wave generator is configured to elastically deform both of the pair of flex splines when the input shaft activates the wave generator.

公开(公告)号：US20240255045A1

公开(公告)日：2024-08-01

申请号：US18560780

申请日：2021-07-21

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Yoshihide KIYOSAWA

IPC: F16H49/00 ,  F16C33/66 ,  F16H57/04

CPC classification number: F16H49/001 ,  F16C33/6696 ,  F16H57/041 ,  F16H57/045 ,  F16H57/0471 ,  F16H57/048 ,  F16C2361/61 ,  F16H2049/003

Abstract: A wave bearing of a space strain wave gearing device comprises an inner ring formed from a bearing steel, an outer ring formed from a martensitic stainless steel, and balls formed from ceramics. On the inner ring formed from a bearing steel, a ceramic coating formed by an AD method is formed as a rust-preventive coating. In the space strain wave gearing device that adopts solid lubrication (powder lubrication), it is possible to reliably prevent rust from developing on the inner ring formed from a bearing steel of the wave bearing. In a space environment where the temperature greatly changes, appropriate setting of the linear expansion coefficients of the inner ring, the outer ring, and the balls enables a change in the radial gap of the wave bearing to be suppressed to a range that does not interfere with practical use.

公开(公告)号：US20240084879A1

公开(公告)日：2024-03-14

申请号：US18511738

申请日：2023-11-16

Applicant: Nexen Group, Inc.

Inventor： Anthony Will Kliber ,  Charles Christian Boushek

IPC: F16H49/00 ,  F16C33/66 ,  F16D3/02 ,  F16H57/021 ,  F16H57/029 ,  F16H57/04

CPC classification number: F16H49/001 ,  F16C33/6603 ,  F16C33/6622 ,  F16D3/02 ,  F16H57/021 ,  F16H57/029 ,  F16H57/0421 ,  F16H57/045 ,  F16H57/0464 ,  F16H57/0471 ,  F16C2361/61 ,  F16H2049/003 ,  F16H2057/0225

Abstract: A strain wave gear system (10) includes first and second sets of ball bearings (80, 82) located intermediate a flange (84) and a retainer plate (88) rotatable with an output (54) and a radially oriented flat disc (74) of the input including strain relief (76). Strain relief (76) is a helical slot in a coupling (70) located radially within the wave generator (94) and the ring gear (22). The ring gear (22) is sealed by a sealing system including sealant (42) forced by a protrusion (34) of the cap (24) entering into a cavity (36) through a channel (40) into a relief volume (38) of the housing (12). The bearing (48) rotatably mounting the housing (12) to the output (54) is lubricated by a lubricating system including plungers (110) threadably received in axial bores (102) intersecting with radial bores (104) in communication with radial holes (47) of the bearing (48).

公开(公告)号：US11879534B2

公开(公告)日：2024-01-23

申请号：US17989750

申请日：2022-11-18

Applicant: Nidec-Shimpo Corporation

Inventor： Taihei Tsubone

IPC: F16H49/00 ,  B25J9/10 ,  F16H55/14

CPC classification number: F16H49/001 ,  B25J9/102 ,  F16H55/14 ,  F16H2049/003

Abstract: A gear includes a tubular portion and a diaphragm portion. The diaphragm portion extends in a direction including a radial component from one axial end portion of the tubular portion. The portion includes a first portion and a second portion. The first portion is on one axial side of the portion. The second portion is on another axial side relative to the first portion. The second portion includes teeth protruding radially outward. A maximum value of a thickness of the diaphragm portion is equal to or less than twice a distance from radially outer ends of the teeth to a radially inner surface of the second portion, and a minimum value of a thickness of the first portion is equal to or less than half the maximum value of the thickness of the diaphragm portion.

公开(公告)号：US20180347679A1

公开(公告)日：2018-12-06

申请号：US15995363

申请日：2018-06-01

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Shoichi Ishikawa

IPC: F16H49/00 ,  F16H55/08

CPC classification number: F16H49/001 ,  F16H55/0833 ,  F16H2049/003

Abstract: In a strain wave gearing, the addendum tooth profile of an internal gear is defined by the formula a and that of an external gear is by the formula b at a principal cross-section located at a tooth-trace-direction center of the external gear, on the basis of a movement locus (Mc) of κ=1 by the teeth of the external gear with respect to those of the internal gear. It is possible to avoid superimposition of flexion-induced bending stresses and tensile stresses caused by load torque at the major-axis locations of the external gear, and the transmission torque capacity of a strain wave gearing can be improved.