Rotatable Lace Fastening Frame for Secure Tool-Free Clamping

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Solution Overview

Problem

Existing fixing frames for clamping articles are difficult to assemble or separate, require specific tools, and do not provide a secure connection against external impacts due to the fixed distance between teeth in strap systems.

Innovation Solution

A fixing frame incorporating a rotatable fastening device and lace that allows for stepless coupling and easy assembly/disassembly by rotating the device, enabling secure attachment and detachment without tools, and adjustable tension.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a belt or screw is used to increase connection stability, then the stability between article and frame is improved, but the ease of assembly and disassembly deteriorates

Engineering Contradiction:

Improveconnection stabilityVSAvoidease of assembly and disassembly

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces traditional mechanical fastening systems (screws, clips) with a lace-based tensioning system operated by a rotatable fastening device. The lace passes through multiple guide holes in the frame and article, creating a flexible yet secure connection that can be tightened or loosened by simply rotating the fastening device to wind or unwind the lace, eliminating the need for tools and complex assembly steps.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fastening parameter from fixed-position mechanical connectors to variable-length lace tension. The rotatable fastening device allows continuous adjustment of lace tension by rotating it to wind or unwind the lace, enabling the connection stability to be dynamically adjusted while maintaining ease of operation through a simple rotational motion.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If a strap with staggered tooth is used to simplify assembly steps, then the ease of assembly and disassembly is improved, but the connection stability deteriorates

Engineering Contradiction:

Improveease of assembly and disassemblyVSAvoidconnection stability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent uses a flexible lace instead of a rigid strap with teeth. The lace can be threaded through multiple guide holes in the frame and article, conforming to the shapes and positions of these holes. This flexibility allows the lace to create a secure, multi-point connection that adapts to the specific geometry of the article and frame, providing both ease of assembly (simple threading and rotation) and high connection stability (distributed tension across multiple anchor points).

Inventive Principle:

Principle #30Flexible shells and thin films

3Ease of manufacture

If fixed-distance teeth are used in strap system, then the manufacturing simplicity is improved, but the adaptability to different article shapes deteriorates

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidadaptability to article shapes

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent creates a universal fastening system where the lace-based mechanism can accommodate various article shapes and sizes. The guide holes are strategically positioned in the frame and article, allowing the lace to wrap around different geometries. The rotatable fastening device provides a standardized interface that works with any article configuration, making the system highly adaptable while maintaining simple manufacturing (standardized hole patterns and a single fastening device type).

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The frame provides a secure connection to articles, preventing separation under impact and allowing easy assembly/disassembly without tools, with adjustable tension for various shapes and sizes.

Implementation Method 1

The lace is coupled to the rotatable fastening device so as to firmly connect the fixing frame to the article

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 2

The frame body is retracted from the releasing position to the securing position by rotating the rotatable fastening device along a fastening direction

Methodology Applied

Scientific EffectTension: Tension

Data Source

PatentUS10502248B2Fixing frame

Publication Date: 2019.12.10 TASI CHIH HSIN

AI summary

A fixing frame which is for clamping an article includes a frame body, a lace and a rotatable fastening device. The frame body is detachably positioned on at least two sides of the article and released or retracted between a securing position and a releasing position. The article is allowed to be released when the frame body is at the releasing position, and the article is firmly connected to the frame body when the frame body is at the securing position. The lace is limitedly threaded on the frame body. The rotatable fastening device is coupled to the lace. The frame body is retracted from the releasing position to the securing position by rotating the rotatable fastening device along a fastening direction, and the frame body is released from the securing position to the releasing position by rotating the rotatable fastening device to loosen the lace.