Strap Buckle With Swinging Member and Pressing Assembly
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Solution Overview
Problem
Existing strap buckles either require complex ratchet mechanisms for repeated tensioning, leading to manufacturing challenges and high costs, or can only provide one-time tensioning, resulting in inconsistent article retention.
Innovation Solution
A strap buckle design featuring a swinging member and a pressing assembly with an elastic member, allowing for repeated tensioning without a ratchet, comprising a base, swinging member, and a first strap that is wound around transverse rods, enabling eccentric rotation and one-way engagement for secure article tying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ratchet mechanism is used to enable repeated tensioning of the strap, then the article retention firmness is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent extracts the essential function of the ratchet mechanism (one-way engagement for repeated tensioning) and implements it through a simplified pressing member with a pressing surface that contacts the strap, eliminating the need for a complex ratchet structure while maintaining the ability to tension the strap repeatedly
Solution Approach 2:
The patent changes the engagement parameter from a mechanical ratchet-tooth interface to a friction-based pressing surface contact, allowing the pressing member to restrict strap movement through controlled pressing force rather than mechanical interlocking
2Reliability
If a ratchet mechanism is used to enable repeated tensioning of the strap, then the article retention firmness is improved, but the manufacturing cost increases
Solution Approach 1:
The patent removes the complex ratchet mechanism components (ratchet wheel, pawls, springs) and replaces them with a simple pressing member that can be easily manufactured, significantly reducing production costs while maintaining the repeated tensioning function
Solution Approach 2:
The pressing member is designed as a simple, inexpensive component that can be easily replaced if needed, using basic materials and manufacturing processes rather than expensive precision-machined ratchet components
3Adaptability or versatility
If a pressing block is used to press against the second strap in a ratchet strap apparatus, then the second strap length can be adjusted, but the pressing block has no effect on the first strap to be tensioned
Solution Approach 1:
The pressing member is designed to perform multiple functions: it restricts strap movement during tensioning, maintains tension on the tensioned strap, and allows for strap length adjustment, making it a multi-functional component that improves overall operation effectiveness
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 strap buckle achieves repeated tensioning with a simple structure, reducing manufacturing costs and enhancing article retention firmness, while avoiding the need for a ratchet mechanism.
Implementation Method 1
The elastic member provides an elastic return force for the pressing member to press against the first strap on the base
Data Source
AI summary
A strap buckle has a base. The base has a bottom plate and two side plates each having one end formed with a pivot hole. The base has a retaining portion spaced from the bottom plate. An opening is defined between the bottom plate and the retaining portion. A swinging member has a pivot portion pivotally connected to the pivot hole. Two opposite sides of the pivot portion have two perforations, respectively. Two transverse rods pass through the perforations and are arranged in parallel. The swinging member is pivoted relative to the base to drive the two transverse rods to rotate together. A pressing assembly has a pressing member and an elastic member. The pressing member is disposed between the two side plates of the base. A first strap is inserted between the bottom plate and the pressing member and wound around the two transverse rods.