Vehicle Hook Locking Structure With Overload Release
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Solution Overview
Problem
Existing vehicle hook apparatuses are prone to damage when overloaded, as the mounting brackets or shafts deform or get damaged due to excessive loads applied to the hook members.
Innovation Solution
A vehicle hook apparatus with a hook member that is displaceable between a storage and use position, featuring a locking portion that engages when a first load is applied and a weak portion that deforms to release the lock when a second, excessive load is applied, preventing damage to the components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the hook member is made to be rigid and strongly connected to the mounting bracket, then the hook member can bear larger loads, but the mounting bracket or shaft may be deformed or damaged when overload is applied
Solution Approach 1:
The hook member is divided into functionally distinct portions: a rigid shaft portion for load transmission, a flexible weak portion for overload protection, and a locking portion for securing. This segmentation allows each part to perform its specific function optimally while protecting the mounting bracket from damage
Solution Approach 2:
The weak portion is designed as a sacrificial element that deforms or breaks under overload conditions. This disposable component protects the more valuable and permanent mounting bracket and shaft from damage, allowing the system to fail safely in a controlled manner
2Ease of operation
If the hook member is made to be displaceable between storage and use positions, then the hook member can be conveniently stored and used, but the locking mechanism may fail under overload
Solution Approach 1:
The hook member transitions between different states: a tilted storage position where it is compact, and a raised use position where it is accessible. The dynamic displacement between these positions is enabled by the shaft rotation mechanism while maintaining reliability through the static locking portion that engages during use
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 solution effectively prevents damage to the components by managing loads and ensuring the hook member is securely locked at the use position while allowing for overload protection, thereby preventing deformation or damage to the mounting components.
Implementation Method 1
a weak portion deformed to unlock the locking portion from the predetermined component, when a second load exceeding the first load is applied at the use position
Data Source
AI summary
Provided is a vehicle hook apparatus capable of preventing damage to a predetermined component that receives a load applied to a hook member. The vehicle hook apparatus includes a hook member provided to be displaceable between a storage position where the hook member is stored by being tilted to a side of a predetermined component and a use position where the hook member is used by being raised from the side of the predetermined component. The hook member includes a locking portion locking to the predetermined component when a first load is applied in a direction in which the hook member is further raised from the use position, and a weak portion deformed to unlock the locking portion from the predetermined component, when a second load exceeding the first load is applied at the use position.