Spring-Biased Dual-Hook Strap Attachment for Side-Load Security
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current strap tensioning devices, particularly those using S-hooks and J-hooks, face limitations in anchor capacity, structural vulnerability under torque and side loading, and the risk of disengagement due to improper positioning or slack conditions, while carabiners offer more security but with reduced anchor capacity and structural weaknesses when used with webbing.
Innovation Solution
A dual-hook attachment device with spring-biased hooks that can be selectively added or removed from a strap end loop, providing secure attachment to large diameter anchors without additional loops or D-rings, and functioning as a static pulley without compromising structural integrity or load-bearing capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional S-hooks or J-hooks are used for strap attachment, then the device can be simple and easy to manufacture, but the anchor capacity is limited and the structure is vulnerable under torque and side loading
Solution Approach 1:
The patent combines two hooks into a single integrated attachment device, where the first hook engages with the anchor and the second hook engages with the strap loop. This merging of functions into one device provides both anchor capacity and structural robustness without requiring separate components, thereby improving strength while maintaining reasonable device complexity.
Solution Approach 2:
The attachment device is designed to perform multiple functions: it can attach to various anchor types (round bars, flat surfaces, etc.), accommodate different strap configurations, and provide both secure attachment and controlled movement. The spring-biased dual-hook mechanism universally handles these diverse requirements, improving adaptability and anchor capacity across different applications.
2Reliability
If carabiners are used for secure attachment, then disengagement security is improved, but anchor capacity is reduced and structural weaknesses occur when used with webbing
Solution Approach 1:
The carabiner-style gate mechanism is segmented into a movable gate portion and a fixed body portion, allowing the gate to rotate and lock independently while the body maintains structural integrity. This segmentation enables secure attachment through the spring-biased locking mechanism while preserving anchor capacity by keeping the main body robust and webbing-compatible.
Solution Approach 2:
The attachment device incorporates dynamic elements including the spring-biased hooks that can flex and rotate, and the movable gate that transitions between locked and unlocked positions. These dynamic features provide security against disengagement while maintaining structural integrity under various loading conditions, including torque and side loading.
3Strength
If additional loops or D-rings are added to straps to accommodate large diameter anchors, then anchor capacity is improved, but device complexity and the risk of disengagement increase
Solution Approach 1:
The patent merges the anchor engagement function and strap engagement function into a single integrated device. The first hook engages the anchor while the second hook engages the strap loop, eliminating the need for separate D-rings or additional loops on the strap. This consolidation improves anchor capacity for large diameter anchors while reducing overall device complexity.
4Reliability
If spring-biased dual-hook mechanism is used, then security and robustness are improved, but the device becomes more complex compared to simple hooks
Solution Approach 1:
The spring-biased hooks are designed to be self-actuating, where the spring force automatically biases the hooks toward the closed position, and the hooks self-lock when engaged with the anchor and strap loop. This self-service mechanism improves reliability and resistance to disengagement while minimizing the need for additional control mechanisms, thereby managing device complexity.
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 dual-hook attachment device offers enhanced security and anchor capacity similar to conventional S-hooks and J-hooks, with improved robustness and resistance to disengagement, while maintaining the convenience of gated carabiners, and allows the strap to move past load-bearing surfaces without damage.
Implementation Method 1
the first and second hook, the first and second hook biased towards each other and interconnected with each other
Data Source
AI summary
An attachment device includes a first hook and a second hook, the first and second hook, the first and second hook biased towards each other and interconnected with each other, such the first and second hook have a first position, where a first curved end of the first hook does not touch a second curved end of the second hook and a second position, where the first curved end of the first hook does touch the second curved end of the second hook.