US 12,571,464 B1Granted

Cam and harmonic reducer

AssigneeGree Electric Appliances, Inc. of Zhuhai

InventorsYachao Zhang, Jiangfeng Tang, Jiajia Gu, Zhongfu Cheng, Yunfei Liu

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Abstract

Disclosed herein are a cam and a harmonic reducer. The cam includes a cam main body, where an outer contour line of the cam main body includes a plurality of engagement region contour curves and a plurality of non-engagement region contour curves; the engagement region contour curves and the non-engagement region contour curves are alternately connected to jointly form the outer contour line of the cam main body; the engagement region contour curves and the non-engagement region contour curves are tangent to each other at intersections; each engagement region contour curve includes a first curve and a second curve, and the first curve and the second curve are connected and are tangent to each other at a joint; a first segment of the first curve protrudes more outwards than a first segment of the second curve.

Claims20

Dependent claims

A cam for a harmonic reducer, wherein the cam comprises a cam main body, and an outer contour line of the cam main body comprises a plurality of engagement region contour curves and a plurality of non-engagement region contour curves:

the plurality of engagement region contour curves and the plurality of non-engagement region contour curves are alternately connected to jointly form the outer contour line of the cam main body;
and the plurality of engagement region contour curves and the plurality of non-engagement region contour curves are tangent to each other at intersections:
each of the plurality of engagement region contour curve comprises a first curve and a second curve, and the first curve and the second curve are connected and are tangent to each other at a joint;
and
an end of the first curve connected with the second curve is a first segment of the first curve, and another end of the first curve is a second segment of the first curve:
an end of the second curve connected with the first curve is a first segment of the second curve, and another end of the second curve is a second segment of the second curve;
and the first segment of the first curve protrudes more outwards than the first segment of the second curve, and the second segment of the second curve protrudes more outwards than the second segment of the first curve.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/105,450Filed 5 May 2023
Priority: CN 202211066353.129 Aug 2022
Published: US 2026/0071673 A112 Mar 2026
Granted: 10 Mar 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F16H 53/02
Cams or cam-followers, e.g. rollers for gearing mechanisms: single-track cams for single-revolution cycles; Camshafts with such cams
F16H 49/001
Other gearings: wave gearings, e.g. harmonic drive transmissions
F16H 2049/003
Wave gearings, e.g. harmonic drive transmissions: features of the flexsplines therefor
Y02P 70/10
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