Hexagonal Wrench Head Grooves for Worn Socket Engagement
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Solution Overview
Problem
Conventional hexagonal wrenches fail to securely engage worn or rounded inner surfaces of sockets, leading to slippage during operation due to wear and tear.
Innovation Solution
A hexagonal wrench design featuring a head with six equal side surfaces and grooves extending to the end surface, creating acute corners that securely engage the socket's inner surface even when it is worn or rounded, allowing for efficient rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional hexagonal wrench head is used, then the structure is simple, but the head slips in the socket when the socket is worn or rounded
Solution Approach 1:
The invention applies local quality by modifying only specific regions of the hexagonal head (the corners) rather than changing the entire head structure. Grooves are added to the corner regions to create acute corners that can engage with worn or rounded sockets, while maintaining the standard hexagonal shape elsewhere. This localized modification improves engagement reliability without significantly increasing overall device complexity.
Solution Approach 2:
The invention uses asymmetry by creating acute corners through grooves on specific sides of the hexagonal head. The grooves are positioned to create asymmetric corner geometries that can better conform to worn or rounded socket inner surfaces, improving the ability to maintain engagement under degraded conditions while keeping the overall symmetric hexagonal form.
2Adaptability or versatility
If frequent use occurs, then the socket inner surface becomes worn and rounded, but the conventional head cannot maintain secure engagement
Solution Approach 1:
The invention applies parameter changes by modifying the geometric parameters of the head corners through the addition of grooves. The grooves change the corner radius and angle parameters, creating acute corners with smaller radii that can better engage with worn or rounded socket surfaces. This geometric parameter modification enables the head to adapt to degraded socket conditions and maintain reliable engagement.
3Productivity
If the head slips in the socket, then relative rotation occurs between the head and socket, but this causes inconvenience and inefficiency
Solution Approach 1:
The invention applies preliminary anti-action by pre-configuring the head with grooves and acute corners that are specifically designed to prevent slippage before it occurs. The acute corners are positioned to proactively engage with the socket inner surface, creating friction and mechanical interlocking that prevents the relative rotation and slippage that would otherwise occur during operation, thereby maintaining efficiency and convenience.
Data Source
AI summary
A hexagonal wrench has a head. The head has an end surface, six equal side surfaces and at least one groove. Each side surface has a left edge segment and a right edge segment adjacent to the left edge segment of an adjacent side surface. The at least one groove is formed in at least one of the right edge segments and the left edge segments and extends to the end surface. Therefore, the head can engage securely an inner surface of a socket to rotate the socket even when the socket is worn or rounded.