Screwdriver Tip Structure with Segmented Grooves for Stress Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional screwdriver heads suffer from stress concentration leading to breakage and lack of antiskid features, which limits their operational effectiveness and longevity.
Innovation Solution
The screwdriver tip structure features alternately arranged convex and concave sections with linear grooves and arcs, distributing stress and providing increased contact areas for enhanced torque and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the inner ring of the connecting surface has a corner design, then the structure is simple and easy to manufacture, but the stress is concentrated on the inner ring causing it to break easily during operation
Solution Approach 1:
The connecting surface is divided into multiple segments including a first connecting surface and a second connecting surface, each with their own inner rings. This segmentation distributes the stress that would otherwise concentrate on a single inner ring, preventing breakage while maintaining manufacturing simplicity through modular design
Solution Approach 2:
The inner rings are designed with curved surfaces instead of sharp corners. The first inner ring has a first curved surface and the second inner ring has a second curved surface, which naturally distribute stress more evenly during rotation operations, eliminating the stress concentration points that cause breakage
2Ease of manufacture
If the abutting surfaces are flat without grooves, then the structure is simple, but the surfaces cannot provide antiskid effect to the bolt during rotation
Solution Approach 1:
The abutting surfaces are designed with different local qualities - the first abutting surface has first grooves for engaging smaller bolts, while the second abutting surface has second grooves for engaging larger bolts. This local differentiation provides appropriate antiskid effects for different bolt sizes without overly complicating the overall structure
Solution Approach 2:
The abutting surfaces are segmented into multiple functional zones with grooves at different locations and orientations. These segmented groove patterns provide targeted antiskid effects for different operating conditions and bolt sizes, improving ease of operation while maintaining reasonable manufacturing complexity
3Device complexity
If a single working portion is used, then the device is simple, but it cannot handle different sizes of bolts effectively
Solution Approach 1:
The screwdriver head is designed with multiple working portions including a first working portion and a second working portion, each capable of engaging different bolt sizes. This multi-functional design allows a single tool to handle various bolt dimensions, significantly improving adaptability while maintaining relatively simple device structure through systematic arrangement of the multiple portions
Data Source
AI summary
A screwdriver tip structure includes a main body provided with an operation end. The operation end is provided with multiple first working sections and multiple second working sections. Each of the first working sections has a convex shape. Each of the second working sections has a concave shape. Each of the first working sections is provided with multiple grooves. Each of the first working sections has a first end and a second end. The second end has a diameter more than that of the first end. Each of the first working sections has a periphery provided with a phantom side face. The side face extends from the second end to the first end. Each of the grooves is provided with a first concave face. The first concave face of each of the grooves includes a first single arc.