US 9,810,278 B2
Leaf spring, leaf spring group, and compressor
Hui Huang, Guangdong (CN); Yusheng Hu, Guangdong (CN); Huijun Wei, Guangdong (CN); Zhong Cui, Guangdong (CN); Jianping Huang, Guangdong (CN); Chuanshun Huang, Guangdong (CN); Zhujin Chen, Guangdong (CN); and Yiming Liang, Guangdong (CN)
Assigned to Green Refrigeration Equipment Engineering Research Center of Zhuhai Gree Co., Ltd., (CN)
Appl. No. 15/26,012
Filed by Green Refrigeration Equipment Engineering Research Center of Zhuhai Gree Co., Ltd., Zhuhai, Guangdong (CN)
PCT Filed Sep. 5, 2014, PCT No. PCT/CN2014/086056
§ 371(c)(1), (2) Date Jun. 22, 2016,
PCT Pub. No. WO2015/043371, PCT Pub. Date Apr. 2, 2015.
Claims priority of application No. 2013 1 0459756 (CN), filed on Sep. 30, 2013.
Prior Publication US 2016/0290427 A1, Oct. 6, 2016
Int. Cl. F16F 1/02 (2006.01); F16F 1/18 (2006.01); F16F 3/00 (2006.01); F16F 3/02 (2006.01)
CPC F16F 1/185 (2013.01) [F16F 1/027 (2013.01); F16F 3/00 (2013.01); F16F 3/023 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A leaf spring comprising:
at least two spring arms, each spring arm of same structure;
an inner fixing hole, the at least two spring arms evenly distributed around a center of the inner fixing hole; and
an outer fixing hole disposed at an outermost end of each spring arm;
wherein each of the at least two spring arms is contoured by two concentric vortex lines, a first vortex line and a second vortex line; a start end of each spring arm is contoured by connecting start ends of the first vortex line and the second vortex line with circular arcs which are concentric with the inner fixing hole; a tail end of each spring arm is contoured by two or three segments of circular arcs and two concentric vortex lines, and the segments of circular arcs are tangent to the two concentric vortex lines; and a circular arc at the outermost tail end is concentric with the outer fixing hole;
the two concentric vortex lines respectively meet equations:
X(t)=a*[cos(t)+t*sin(t)],
Y(t)=a*[sin(t)−t*cos(t)]; and
x(t)=(a+b)*[cos(t)+(t+α)*sin(t)]
y(t)=(a+b)*[sin(t)−(t+α)*cos(t)];
wherein, X, Y, x, and y are coordinate values, a and a+b are coefficients of radius, t is a variable, α is an initial angle, and 0.5≤a≤30, 0<b≤10, 0 rad<t≤30 rad, and 0 rad<α≤150 rad.