Unlockable Clamp Pulley with Integrated Lock
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Solution Overview
Problem
Conventional pulleys with integrated clamps are cumbersome due to the additional karabiner required for locking, complicating handling operations.
Innovation Solution
A pulley design featuring a lock fixed on the first flange-plate that can be actuated from a locked to an unlocked position, preventing the trigger from moving to an unstable intermediate position unless manually released, allowing for easier handling and operation of the clamp.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an additional karabiner is inserted in a locking opening to keep the trigger in the inactive position, then the pulley can be locked in the inactive position, but the handling operations become complicated
Solution Approach 1:
The patent merges the locking function and the trigger retention function into a single integrated lock mechanism. The lock comprises a body with a locking opening and a retaining element that directly engages with the trigger, eliminating the need for a separate additional karabiner. This integration simplifies the overall structure and makes handling easier while maintaining reliable locking of the trigger in the inactive position.
Solution Approach 2:
The lock mechanism serves multiple functions: it locks the pulley in the inactive position, retains the trigger in the inactive position, and can be actuated to release the trigger. By making the lock multi-functional, the patent eliminates the need for separate components and simplifies the user interface, directly addressing the handling complexity issue.
2Volume of moving object
If the pulley is designed with a compact structure, then the dimensions are reduced, but the locking mechanism may become more complex
Solution Approach 1:
The patent employs a nested structure where the retaining element is housed within the lock body, and the entire lock mechanism is integrated into the pulley structure. The retaining element can be pivoted within the lock body, and the lock itself is compactly arranged within the pulley assembly. This nesting approach minimizes the overall volume while maintaining the necessary locking functionality.
Solution Approach 2:
The patent combines multiple locking and retaining functions into a single integrated lock mechanism, reducing the number of separate components. The lock body, retaining element, and trigger interaction are merged into one cohesive assembly, which reduces overall complexity despite the compact dimensions.
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
Enables a compact and easily manageable pulley with a stable inactive position for the clamp, preventing accidental activation and enhancing user control over the clamping mechanism.
Implementation Method 1
the lock is pivoting around a spindle and is biased to the locked position by a bias spring
Data Source
AI summary
A pulley with an unlockable clamp, comprising a rotary roller, a pivoting trigger designed to release and clamp the rope against the roller, and control means to keep the trigger in the inactive position disabling action of the clamp, wherein the control means comprise a lock fixed onto the first flange-plate and able to be actuated from a locked position to an unlocked position to enable movement of the trigger to the inactive position.