Forged Safety Carabiner with Integrated Finger Orifice
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Solution Overview
Problem
Existing safety securing carabiners for individuals, particularly used in height-related activities, face challenges such as difficulty in hanging without excessive clamping force, unprotected fingers, and hindrance during door closure due to the design of distinct gripping and receiving parts.
Innovation Solution
A carabiner design featuring a one-piece forged metal hook with an inverted J shape, an elongated vertically oriented orifice for ergonomic hand placement, and a rotatably mounted door with a C-shaped gate that prevents finger interference during operation, along with a protective cover for finger protection and a spring-activated locking mechanism for secure transitions between stowage states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the gripping part is made distinct and separate from the receiving part, then the carabiner structure is more robust, but it becomes difficult for the user to hang on without deploying very large clamping force
Solution Approach 1:
The patent combines the gripping part and receiving part into a single integrated carabiner body structure. This allows the user to hang on by simply placing fingers into the opening without needing to apply large clamping forces, while maintaining structural robustness through the unified forged design.
2Strength
If the gripping part is made distinct and separate from the receiving part, then the carabiner structure is more robust, but the fingers holding the gripping part are not protected against attack by an external object
Solution Approach 1:
By integrating the gripping part into the receiving part structure, the carabiner body itself forms a protective enclosure around the user's fingers. The robust forged metal construction shields fingers from external objects while allowing easy access through the opening.
3Strength
If the gripping part is made distinct and separate from the receiving part, then the carabiner structure is more robust, but the presence of the fingers on the gripping part can constitute a hindrance when closing the door
Solution Approach 1:
The integrated design positions the gripping area within the receiving part's opening, allowing fingers to be naturally retracted or positioned away from the door closing path. The unified structure enables smooth door operation without finger interference while maintaining structural integrity.
4Strength
If a one-piece forged metal hook is used, then the robustness of the gripping part is guaranteed, but the manufacturing complexity increases
Solution Approach 1:
The patent employs a one-piece forged metal construction that integrates the gripping part, receiving part, and door mechanism into a single robust component. This forging process, while requiring specialized manufacturing capability, ensures uniform material properties and eliminates weak points from assembly joints, delivering superior strength and reliability.
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
The invention relates to a safety anchoring spring hook (2a, 2b) for a person, said spring hook including a hook (4) for receiving an anchoring element (3), said hook having a gripping part (7) and a part (5) for receiving said element, said receiving part having an opening (6) through which said element passes, a gate (8) for closing said opening, said gripping part being provided with an aperture (30) into which said person can insert his or her hand. The invention also relates to a system comprising two spring hooks interconnected by a transmission device and an assembly comprising at least one such spring hook.