Cylindrical Shoelace Buckle With Nested Snap-Fit Connections
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Solution Overview
Problem
Existing rotary buckles for shoelaces lack a close fit structure, leading to disengagement and a limited service life due to components separating during use.
Innovation Solution
A tightening buckle with a clamping piece, base, shoelace winding member, upper connector, and lower connector, all with cylindrical geometry, featuring snap-fit connections and serrations to enhance stability and firm installation, allowing for stable rotation and coiling of shoelaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing rotary buckles are used for shoelaces, then tightening and loosening function is provided, but components are prone to disengage and service life is limited
Solution Approach 1:
The rotary buckle is divided into multiple independent cylindrical components (upper connector, lower connector, shoelace winding member, clamping piece, base) that can be assembled and disassembled. Each component has a simple cylindrical structure with specific functional features (mounting holes, snap-fit parts, serrations) that enable reliable connections while maintaining ease of assembly and disassembly.
Solution Approach 2:
The components are designed with nested cylindrical geometries where the clamping piece mounts on the upper connector, the shoelace winding member fits inside both connectors, and the base mounts on the lower connector. This nested arrangement creates a compact, stable structure where each component supports the others, preventing disengagement during use.
2Ease of manufacture
If snap-fit connections are used for assembly, then easy assembly and disassembly is achieved, but connection firmness may be compromised
Solution Approach 1:
The snap-fit parts and mounting features are pre-configured on each cylindrical component during manufacturing. The mounting holes, snap-fit protrusions, and alignment features are built into the component structures beforehand, allowing for quick and easy assembly without requiring complex assembly procedures or tools.
Solution Approach 2:
The snap-fit parts act as intermediary elements between the cylindrical components. These snap-fit features provide a mechanical interface that translates the simple snap-together action into a firm, reliable connection, bridging the gap between ease of assembly and connection strength.
Data Source
AI summary
A tightening buckle for stabilizing shoelaces is disclosed, including a clamping piece, a base, a shoelace winding member, an upper connector and a lower connector, and all of them have a cylindrical geometry. The clamping piece is configured to be mounted on outside of the upper connector, and the upper connector is configured to be fixedly connected to the shoelace winding member and also be rotationally connected to the lower connector via the shoelace winding member. The shoelace winding member is configured to be provided inside of the upper connector and the lower connector, and the base is configured to be mounted on outside of the lower connector. It can simplify overall structure as much as possible, and meanwhile also can ensure stability of use, thus prolonging service life.