Segmented Quick-Release Buckle for Webbing
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Solution Overview
Problem
Existing attachment systems for webbing or straps, such as buckles and D-rings, often compromise strength or durability when designed for quick release, and lack rework elasticity and repairability.
Innovation Solution
A quick-attach system featuring an attachment portion and an operating portion with locking hooks that engage each other, allowing for secure and reliable connection without affecting the webbing, and can be easily assembled and disassembled without adjusting the webbing, using a design where the operating portion's legs deform under tension to enhance the locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a slot is added to the cross bar to enable quick release, then the buckle can be removed by sliding the webbing through the slot, but the strength of the cross-bar is significantly reduced and the device is prone to breakage under large degrees of tension
Solution Approach 1:
The cross-bar is divided into two separate bars (first cross-bar and second cross-bar) that can move independently relative to each other. The first cross-bar maintains structural strength while the second cross-bar provides the quick release function through its slot, allowing the webbing to be slipped through without compromising the overall strength of the buckle structure.
2Ease of operation
If the webbing attachment bar is unclipped from the buckle at one end to release the webbing, then quick release is achieved, but the strength is reduced due to unbalanced stress on the two ends causing the weaker edge to break first
Solution Approach 1:
The attachment bar is segmented into two independent cross-bars that can move relative to each other. This segmentation allows the webbing to be attached to and released from the buckle without creating unbalanced stress on a single bar, as each cross-bar bears its own load independently, maintaining balanced stress distribution and preventing breakage at the weaker edge.
3Strength
If a closed cross bar is used to achieve low cost and high durability, then the fastener is strong and durable, but the cross bar cannot be replaced and rework elasticity in production and repair market development is blocked
Solution Approach 1:
The cross-bar structure is segmented into replaceable components (first cross-bar and second cross-bar) that can be independently replaced. This segmentation enables the fastener to maintain its strength and durability while also providing rework elasticity, as individual components can be replaced without affecting the entire structure, thus opening up possibilities for repair markets and production flexibility.
Solution Approach 2:
The cross-bar structure is designed to be dynamic rather than static, with the ability to be assembled and disassembled. The first and second cross-bars can be moved relative to each other and reconfigured, providing adaptability and versatility while maintaining the strength and durability characteristics of traditional closed cross-bar designs.
Data Source
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AI summary
A system (10) for attachment to webbing has an attachment portion (20) and an operating portion (30) that can be attached to and detached from each other. The attachment portion has a base body (21) with a cavity (218), a transverse bar (24), and two locking hooks (35, 36). The operating portion has two side legs (331, 32), top sections connected to the side legs, a gap (38) between the top sections and a locking hook on each of the top sections. The operating portion is connectable to the attachment portion by pressing the legs together and inserting the locking hooks of the operating portion into the base body, and then releasing the legs so that the locking hooks of the attachment portion and operating portion engage each other. The operating portion is detachable from the attachment portion by squeezing the legs together until the locking hooks on the operating portion clear the locking hooks on the attachment portion.