Shoelace tightening device

The shoelace tightening device addresses complexity and cost issues by using triangular pressure protrusions and interference protrusions for easy, efficient shoelace adjustment without additional components, leveraging the shoelace's tensile force for secure fastening and loosening.

WO2026014998A1PCT designated stage Publication Date: 2026-01-15COMFY CO LTD
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Patent Information

Application Number
PCT/KR2025/095044
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-07-09
Filing Date
2025-03-20
Publication Date
2026-01-15

AI Technical Summary

Technical Problem

Conventional shoelace tightening devices require multiple components, including a fixed housing, rotating housing, winding drum, and a special spring, leading to increased manufacturing costs and complex structures, and often necessitate reverse rotation to relieve lace tension, making adjustment cumbersome.

Method used

A shoelace tightening device with triangular pressure protrusions on the cap's inner periphery to release the engagement of the tension reverse rotation prevention gear when the shoelace is wound in reverse, allowing easy reverse rotation without additional components, and a ring-shaped interference protrusion for bidirectional rotation control.

Benefits of technology

Enables easy and efficient tightening and loosening of shoelaces without additional components, preventing accidental loosening through the shoelace's tensile force, reducing complexity and cost, and simplifying the adjustment process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a shoelace tightening device and, more specifically, to a shoelace tightening device including a cap coupled to the upper side of a rotation housing and serving as a handle, and having a plurality of triangular pressing protrusions formed on the inner periphery of the cap, wherein, when switched in a reverse direction during shoelace winding, the triangular pressing protrusions press a tensioned latch portion inward so as to release engagement between tension anti-reverse teeth of a fixed housing and the latch portion of the rotation housing, thereby allowing easy and immediate reverse rotation of the cap even during shoelace winding through forward rotation of the cap.
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Citation Information

Patent Citations

  • Shoelace Tightening Device of Rotation Type

    KR102276008B1

  • Detachable lacing apparatus for footwear

    KR102449997B1

  • Detachable lacing apparatus for footwear

    KR102453511B1

  • Detachable lacing apparatus for footwear

    KR102550045B1

  • Failure compensating lace tension devices and methods

    US20150076272A1