US 12,402,695 B2
Spool, tightening device with spool, and coupling method of spool and lace
Wei Huang, Shenzhen (CN)
Assigned to SHENZHEN ICOMWELL INTELLIGENT MEDICAL TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed by SHENZHEN ICOMWELL INTELLIGENT MEDICAL TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed on Jun. 28, 2023, as Appl. No. 18/342,785.
Claims priority of application No. 202211616327.2 (CN), filed on Dec. 15, 2022; and application No. 202211616513.6 (CN), filed on Dec. 15, 2022.
Prior Publication US 2024/0197040 A1, Jun. 20, 2024
Int. Cl. A43C 1/06 (2006.01); F16G 11/12 (2006.01)
CPC A43C 1/06 (2013.01) [F16G 11/12 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A spool, configured to be coupled with and wind a lace, and comprising an axial cylinder, a first base plate and a second base plate, wherein the first base plate and the second base plate are located at opposite ends of the axial cylinder, and an outer region of the axial cylinder between the first base plate and the second base plate forms a groove for winding the lace; wherein
the axial cylinder is provided with an inner chamber; a side wall of the axial cylinder is provided with a first lace insertion hole, a second lace insertion hole, a first lace exit hole, and a second lace exit hole; the first lace insertion hole and the first lace exit hole are located on opposite sides of the axial cylinder; and the second lace insertion hole and the second lace exit hole are located on opposite sides of the axial cylinder; and
the first lace insertion hole, the inner chamber of the axial cylinder, and the first lace exit hole form a first routing path; the second lace insertion hole, the inner chamber of the axial cylinder, and the second lace exit hole form a second routing path; and the first routing path and the second routing path are designed in separate grade crossing structure; wherein a center of the first lace insertion hole and a center of the second lace insertion hole are located at different axial heights of the axial cylinder, the first base plate comprises an opening communicated with the inner chamber of the axial cylinder, the lace passing through the first routing path and the second routing path is allowed to be seen from an outside through the opening of the first base plate and the inner chamber of the axial cylinder, wherein the lace comprises a first free end and a second free end, wherein the first free end comprises a first knot after knotting and the second free end comprises a second knot after knotting, wherein the lace is coupled to the spool via the first knot and the second knot, and the first knot and the second knot are stored in the inner chamber of the axial cylinder.