US 11,754,162 B2
Double-flexspline harmonic reducer
Zilong Ling, Guangdong (CN)
Assigned to AICI TECHNOLOGY (NINGBO) CO., LTD., Ningbo (CN)
Appl. No. 17/281,928
PCT Filed Sep. 28, 2019, PCT No. PCT/CN2019/108807
§ 371(c)(1), (2) Date Mar. 31, 2021,
PCT Pub. No. WO2020/069660, PCT Pub. Date Apr. 9, 2020.
Claims priority of application No. 201811163988.8 (CN), filed on Oct. 3, 2018.
Prior Publication US 2021/0381588 A1, Dec. 9, 2021
Int. Cl. F16H 49/00 (2006.01); F16H 55/08 (2006.01); F16H 55/17 (2006.01)
CPC F16H 49/001 (2013.01) [F16H 55/0833 (2013.01); F16H 55/17 (2013.01); F16H 2049/003 (2013.01); F16H 2055/176 (2013.01)] 15 Claims
OG exemplary drawing
1. A double-flexspline harmonic reducer, comprising a strong flexspline, a weak flexspline and a wave generator, wherein the strong flexspline and the weak flexspline are coaxially fixed in an axial direction and a radial direction, and teeth which can be engaged with each other and are different in the number thereof are provided on the strong flexspline and the weak flexspline respectively; the wave generator causes the weak flexspline to undergo non-circular elastic deformation and then to partially engage with the strong flexspline, and a contact portion of the strong flexspline and the weak flexspline undergoes non-circular elastic deformation under a radial pressure from the weak flexspline; and a wall thickness of the strong flexspline is greater than or equal to 2 times and less than 5 times that of the weak flexspline, wherein a reference radius of the tooth farthest from an axis of the reducer after non-circular deformation of the weak flexspline under an action of the wave generator is greater than that of a circular tooth ring before an assembly of the strong flexspline.