Wrench Handle Anti-Slip Embossed Patterns
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Solution Overview
Problem
Existing ratchet wrenches lack effective anti-slipping features on their end portions, leading to potential hand slippage and injury, especially when operating with larger torque, and their anti-slipping jackets are prone to damage from metal tools and oil exposure, increasing manufacturing costs without adequate functionality.
Innovation Solution
The wrench features anti-slipping sections with embossed patterns on both upper and lower faces of the handle, extending across the end portions, providing friction in all directions and reducing the likelihood of slippage, even with oily hands, while maintaining handle strength and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an anti-slipping protective jacket is added to the handle, then anti-slipping effect is improved, but the jacket is liable to be scraped and damaged by metal tools and deteriorates when contacting oil
Solution Approach 1:
The patent removes the separate protective jacket component and extracts only the essential anti-slipping function, integrating it directly into the handle surface through embossed patterns. This eliminates the jacket material that is prone to damage from metal tools and oil while maintaining the anti-slipping effect.
Solution Approach 2:
The anti-slipping function is merged with the handle structure itself by forming embossed patterns directly on the handle surface. This integration eliminates the need for a separate jacket layer, combining the structural and anti-slipping functions into a single durable component.
2Ease of manufacture
If the anti-slipping section is limited to the intermediate portion of the handle, then manufacturing is simpler, but the user's hand is liable to slip at the end portions when impinging an object
Solution Approach 1:
The patent applies anti-slipping embossed patterns specifically at the end portions of the handle where the user's hand contacts during high-torque operations. This localized application provides enhanced grip stability precisely where needed without requiring anti-slipping treatment across the entire handle surface.
3Reliability
If the regular protrusions and recessions extend transverse to the handle direction, then anti-slipping effect is provided for longitudinal force, but the effect is limited when the user's hand moves in a transverse direction
Solution Approach 1:
The patent employs irregularly shaped embossed patterns rather than regular symmetric protrusions and recessions. These asymmetric patterns provide friction and grip enhancement in multiple directions, accommodating both longitudinal and transverse hand movements during wrench operation.
Solution Approach 2:
The embossed patterns incorporate three-dimensional surface variations that extend in multiple dimensions rather than solely transverse to the handle. This multi-directional surface topology provides anti-slipping effect regardless of the direction in which the user's hand moves.
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 anti-slipping sections on the wrench handle enhance grip stability during both low and high-torque operations, preventing slippage and damage, and are cost-effective to produce, ensuring reliable performance without additional anti-slipping devices.
Implementation Method 1
An anti-slipping section is formed on each of two end portions of the upper face and the lower face of the handle. Each anti-slipping section includes a plurality of embossed patterns. Since each anti-slipping section extends across the end portions of the handle, the user's hand will not slip during operation of the wrench even though there is oil on the user's hand.
Data Source
AI summary
A wrench includes a body having two ends and a handle between the ends of the body. At least one of the ends of the body can be used for driving an object. The handle includes an upper face and a lower face opposite to the upper face. An anti-slipping section is formed on each of two end portions of the upper face and the lower face of the handle. Each anti-slipping section includes a plurality of embossed patterns. Since each anti-slipping section extends across the end portions of the handle, the user's hand will not slip during operation of the wrench even though there is oil on the user's hand.