Torsion-Spring Hook Latch Assembly for Damage-Resistant Locking
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Solution Overview
Problem
Existing hook latches used in material handling applications, such as those with cranes and hoists, are frequently damaged, necessitating an improved design that is both durable and efficient for manufacturing and end-user applications.
Innovation Solution
A hook assembly featuring a spring latch with a pair of torsional springs and an elongate member that engages with an obstruction on the hook, providing a secure and durable locking mechanism that prevents the opening between the hook's tip and neck portion from being accidentally opened.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional latches are used on hooks, then the hook can be secured, but the latch is frequently damaged in field applications
Solution Approach 1:
The patent combines the latch body and the spring mechanism into a single integrated assembly where the spring is permanently attached to the latch body. This merging of components creates a more robust structure that resists field damage while maintaining reliable hook security.
Solution Approach 2:
The patent introduces a spring-loaded mechanism that allows the latch to dynamically adjust and absorb impacts or misalignments during operation. The spring's elastic deformation capability enables the latch to withstand field conditions without permanent damage, improving both durability and reliability.
2Reliability
If a secure locking mechanism is implemented, then the hook prevents accidental opening, but the mechanism becomes more complex
Solution Approach 1:
The patent employs a spring-loaded latch that automatically engages and locks when the hook is properly positioned. The spring mechanism self-regulates the locking force and maintains security without requiring additional control systems or complex actuation mechanisms, achieving high reliability with minimal added 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 spring latch design enhances the durability and reliability of hook assemblies by providing a robust locking mechanism that minimizes the risk of damage and ensures secure engagement with loads, thereby improving manufacturing efficiency and end-user safety.
Implementation Method 1
A spring latch (9) has a pair of spaced apart torsional springs (10, 13) disposed on opposite sides of the hole (163) in the neck portion (131)
Implementation Method 2
The distal portion (23) is configured to engage with an obstruction (170) on the hook (110) near the tip (143) such that in a closed position the spring latch (9) blocks the opening (146)
Data Source
AI summary
A spring latch has a pair of spaced apart torsional springs disposed on opposite sides of a hole in a neck portion of a hook. A horizontal elongate member is connected to one of the pair of spaced apart torsional springs and an elongate member is connected to the pair of spaced apart torsional springs. The horizontal elongate member extends through the hole in the neck portion. The elongate member extends to a distal portion. The distal portion is configured to engage with a surface on the hook near a tip such that in a closed position the spring latch blocks the opening formed between the tip and the neck portion of the hook.