Locking Carabiner Sleeve to Prevent Accidental Gate Opening
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Solution Overview
Problem
Existing carabiners are prone to accidental opening due to external forces such as wind, vibrations, or rope friction, which can compromise safety in climbing and other applications.
Innovation Solution
A carabiner design featuring a frame, a pivotably coupled lever, and a sleeve that can be moved along the lever to secure the lever against pivoting. The sleeve is configured to prevent involuntary movement, especially in a second position where it surrounds the top end, and is aided by a mechanical member that applies a force to maintain the sleeve in this secure position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sleeve is made movable on the lever to allow rotation for securing the carabiner, then the ease of operation is improved, but the reliability deteriorates due to accidental movement from external forces
Solution Approach 1:
The mechanical member (spring) applies a preliminary counteracting force to the sleeve in the opposite direction of potential accidental movement caused by external forces like wind or rope friction. This pre-applied force prevents the sleeve from moving unintentionally while allowing deliberate user activation when sufficient force is applied.
Solution Approach 2:
The spring is pre-loaded to maintain the sleeve in a specific position (surrounding the top end of the lever) before any external forces act on the system. This preliminary positioning ensures the carabiner starts in a secure state and remains so unless the user intentionally overrides the spring force.
2Reliability
If the mechanical member applies force to prevent involuntary movement of the sleeve, then the reliability is improved, but the ease of operation deteriorates due to additional resistance
Solution Approach 1:
The spring applies a partial force that is sufficient to prevent accidental movement from minor external disturbances but can be easily overridden by deliberate user action. The force is calibrated to be strong enough for safety but weak enough to allow intentional operation when needed.
3Reliability
If the sleeve surrounds the top end in the second position to prevent lever pivoting, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The sleeve combines multiple functions into a single component: it acts as both the locking mechanism (by surrounding the top end to prevent pivoting) and the operational interface (by rotating to engage/disengage the connection element). This merging reduces the need for separate locking components and simplifies the overall structure.
Solution Approach 2:
The sleeve serves multiple purposes: it provides the locking action, interfaces with the user for operation, and works in conjunction with the spring for safety. This multi-functionality reduces the total number of components needed while maintaining reliable operation.
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 carabiner is securely locked in the closed position, reducing the likelihood of accidental opening, thereby enhancing safety and usability, especially under external forces.
Implementation Method 1
a mechanical member configured for applying a force to the sleeve for avoiding an involuntary movement of the sleeve, particularly the force directed towards the second position
Data Source
AI summary
A carabiner includes a frame including an engagement end and a pivoting end therebetween defining an opening; a lever including a top end and an lever connection element, the lever pivotably coupled to the pivoting end and configured to be pivoted between an open and a closed position for the engagement end and top end to detachably engage; a sleeve mounted movably on the lever and having a sleeve connection element corresponding to the lever connection element, wherein said threads are configured to move the sleeve along the lever sectionally between a first position and a second position, and said threads are disengaged in the second position; and a mechanical member configured for applying a force to the sleeve for avoiding an involuntary movement of the sleeve, wherein the sleeve surrounds at least a part of the top end in the second position.