Triple-Action Carabiner Locking Mechanism for One-Handed Safety
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Solution Overview
Problem
Existing carabiner safety locking mechanisms, such as ferrule and dual-action systems, face issues with accidental opening due to vibrations and difficulty in verifying the locking status, and triple-action solutions are complex and costly to implement, making them hard to use with one hand, especially while wearing gloves.
Innovation Solution
A carabiner with a triple-action safety locking mechanism featuring a movable divider element and locking peg or wire that requires three distinct steps to open, allowing easy one-handed operation and visual verification of the locking status, while being simpler and less expensive to construct.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ferrule system is used for safety locking, then the carabiner can be closed securely, but the ferrule may unscrew accidentally due to vibrations and rubbing action
Solution Approach 1:
The locking mechanism is divided into three distinct actions: closing the lever, engaging the locking element, and securing the divider element. This segmentation ensures that each component performs a specific function, preventing accidental opening while maintaining secure closure.
Solution Approach 2:
The lever is designed to automatically engage the locking element upon closing, and the divider element is pre-positioned to engage with the locking element. This preliminary action ensures that the safety lock is engaged before the user needs to verify it, preventing accidental opening.
2Reliability
If a ferrule system is used for safety locking, then the carabiner can be closed securely, but it becomes difficult to visually verify the locking status
Solution Approach 1:
The divider element is designed with visual indicators that change position or appearance when engaged or disengaged. This allows the user to quickly verify the locking status at a glance, improving detectability without compromising safety.
3Reliability
If a triple-action safety locking mechanism is implemented, then the carabiner opening safety is significantly improved, but the operational complexity increases and it becomes difficult to use with one hand while wearing gloves
Solution Approach 1:
The three locking actions are designed to work together in a integrated mechanism where the lever closing, locking element engagement, and divider element securing occur in sequence but can be initiated with a single hand motion. This merging maintains safety while improving operability.
Solution Approach 2:
The locking mechanism incorporates dynamic elements such as spring-loaded components and movable parts that automatically engage and disengage based on lever position. This dynamic design allows the triple-action lock to be operated easily with one hand, as the mechanism responds to user input rather than requiring precise manual manipulation of each component.
4Reliability
If a triple-action safety locking mechanism is implemented, then the carabiner opening safety is significantly improved, but the construction and assembly costs increase
Solution Approach 1:
The locking mechanism uses multi-functional components that perform multiple roles. For example, the lever serves both as the closing mechanism and as the actuator for the locking element, while the divider element both locks and provides visual verification. This universality reduces the total number of parts needed, lowering manufacturing and assembly costs.
Data Source
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AI summary
A carabiner (4) with an at least triple-action safety locking mechanism comprising an open ring (8), extending from a first end (12) to a second end (16), a lever (20) that may be opened, to open and close the ring (8) by connecting said first and second ends (12,16), the lever (20) being hinged to the first end (12) at a base (24) and being provided with a movable tip (28) suitable to interface with the second end (16). The lever (20) comprises a main body (32), which extends between the base (24) and the tip (28), the carabiner further comprises a divider element (36) mechanically connected to a locking element (40) of the lever (20) configured to pass between a retracted configuration, in which it does not interfere with the second end (16), and an extracted configuration, in which it interferes with the second end (16), preventing the opening of the lever (20). The divider element (36) is movable from an unlocked or open position in which the locking element (40) is in a retracted configuration, to a locked or closed position in which the locking element (40) is in an extracted configuration.