US 12,421,794 B2
Cord winding assembly, actuating system and window shade
Chien-Fong Huang, City of Industry, CA (US); and Chin-Tien Huang, New Taipei (TW)
Assigned to TEH YOR CO., LTD., New Taipei (TW)
Filed by Teh Yor Co., Ltd., New Taipei (TW)
Filed on Mar. 30, 2022, as Appl. No. 17/709,220.
Claims priority of provisional application 63/171,344, filed on Apr. 6, 2021.
Prior Publication US 2022/0316272 A1, Oct. 6, 2022
Int. Cl. E06B 9/322 (2006.01); E06B 9/72 (2006.01)
CPC E06B 9/322 (2013.01) [E06B 9/72 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A cord winding assembly for a window shade, comprising:
a housing having a first and a second end opposite to each other along a lengthwise axis of the housing, and a cavity between the first and the second ends, the housing being configured to be installed in a rail of the window shade;
a first spool portion connected with a first suspension cord, and a second spool portion connected with a second suspension cord, the first and the second spool portions being disposed in the cavity of the housing, the first suspension cord extending inside the housing from the first spool portion to the first end of the housing and exiting the housing at the first end thereof, the second suspension cord extending inside the housing from the second spool portion to the second end of the housing and exiting the housing at the second end thereof; and
a transmission axle rotationally coupled to the first and the second spool portions and extending outside the housing at least at the first end thereof, the transmission axle and the first and the second spool portions being rotatable concurrently relative to the housing in a first direction for respectively winding the first and the second suspension cords around the first and the second spool portions, and in a second direction opposite to the first direction for respectively unwinding the first and the second suspension cords from the first and the second spool portions;
wherein the first spool portion and the second spool portion are two individual parts, the first spool portion has a first and a second spool end axially opposite to each other and the second spool portion has a third and a fourth spool end axially opposite to each other, the transmission axle is disposed through a hollow interior of the first spool portion and a hollow interior of the second spool portion, the transmission axle being rotationally engaged with the first spool end of the first spool portion and rotationally engaged with the fourth spool end of the second spool portion, the second spool end of the first spool portion being adjacent to the third spool end of the second spool portion, the second spool end of the first spool portion having a first flange structure and the third spool end of the second spool portion having a second flange structure engaged with the first flange structure; and
wherein the first suspension cord has a first cord end anchored to the first spool portion adjacent to the first flange structure, and the second suspension cord has a second cord end anchored to the second spool portion adjacent to the second flange structure.