Hand Protecting Device for Sheet Metal Straightening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Users performing manual straightening tasks, such as sheet metal repair, often suffer physiological damage due to the crushing force applied when using a straightening bar, as they need to position their hands at the fulcrum point to apply precise adjustments.
Innovation Solution
A hand protecting device comprising a loop-like structure with a base and grip portion, formed from a continuous band of material, which acts as a fulcrum point for the straightening bar, providing an opening for the user's hand and featuring non-skid surfaces to prevent tool slippage and absorb compressive forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the user positions their hand at the fulcrum point to make minute adjustments, then the manufacturing precision of the straightening operation is improved, but the user's hand is subjected to crushing forces causing physiological damage
Solution Approach 1:
The patent introduces a fulcrum device as an intermediary between the user's hand and the straightening bar. The device includes a fulcrum point that contacts the straightening bar and a hand support surface that supports the user's hand, thereby mediating the crushing force and allowing precise positioning without direct exposure to harmful forces
Solution Approach 2:
The hand support surface is positioned to support the user's hand before the crushing force is applied. The fulcrum device absorbs and distributes the crushing force through its structure, providing beforehand cushioning that prevents physiological damage while maintaining positioning precision
2Productivity
If a straightening bar is used to apply straightening force, then the productivity of the straightening operation is improved, but the user's hand is exposed to crushing forces between the bar and fulcrum point
Solution Approach 1:
The fulcrum device serves as an intermediary that allows the straightening bar to apply force efficiently while protecting the user's hand. The device structure enables the bar to move freely while the hand support surface absorbs crushing forces, maintaining productivity without exposing the hand to harmful effects
Solution Approach 2:
The fulcrum device segments the force application into two separate functions: the fulcrum point handles the straightening bar contact and force transmission, while the hand support surface handles hand protection. This segmentation allows efficient force application while isolating the user's hand from crushing forces
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 device effectively protects the user's hands and fingers from injury by allowing precise control over the straightening force application while distributing and absorbing the compressive forces, preventing numbness and pain.
Implementation Method 1
the loop structure, which, in embodiments, may be continuous, may act as a fulcrum point for the use of a straightening bar... absorbing the compressive forces
Implementation Method 2
featuring non-skid surfaces to prevent tool slippage
Data Source
AI summary
A device and method for protecting the hands, knuckles and fingers of a user using an elongate tool such as a straightening bar to apply a desired straightening force to a structure to be straightened, such as sheet metal structure, using a fulcrum-lever approach to apply straightening force to the structure. The hand protecting device may comprise a base portion and a grip portion molded in one piece. The user's hand may grip the device while the structure of the device prevents crushing of the user's hand when the device is used at the fulcrum point, between the elongate tool and a fulcrum structure. The device and method of the system allow the user to use their hand to make needed adjustments to the placement of the elongate tool to apply the desired straightening force, without crushing the hand of the user when the straightening force is applied.