Toolbox Handle With Stepped Through Holes And Ribs
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Solution Overview
Problem
Conventional toolbox handles prioritize either loading capacity or user comfort, often compromising on one aspect, and suffer from deformation and reduced air convection due to the use of through holes.
Innovation Solution
A toolbox handle design featuring a grip portion with stepped through holes and ribbed inner surfaces, allowing for deformability and improved air convection while maintaining loading capacity, combined with a connecting portion for secure attachment to a tool box.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lower portion of the handle is made of softer material to improve gripping comfort, then the comfort of gripping is improved, but the loading capacity of the handle is reduced
Solution Approach 1:
The handle is divided into two portions with different material properties: the upper portion uses harder material for structural strength and loading capacity, while the lower portion uses softer material for gripping comfort. This local differentiation allows each portion to optimize its function without compromising the other.
2Temperature
If through holes are disposed between the upper and lower portions to increase air convection, then air convection is improved, but the upper portion becomes too soft and deforms easily
Solution Approach 1:
The upper portion is designed with a specific hardness that balances air convection needs with structural stability. The localized hardness distribution ensures the upper portion remains rigid enough to resist deformation while still allowing air flow through the holes for cooling.
3Temperature
If through holes are disposed between the upper and lower portions to increase air convection, then air convection is improved, but the lower portion and upper portion are prone to separate from each other after multiple uses
Solution Approach 1:
A connecting portion is introduced as an intermediary element between the upper and lower portions. This connecting portion reinforces the connection, prevents separation after multiple uses, while still allowing air convection to pass through the holes in the handle structure.
4Strength
If the radial dimension of the handle is enlarged or the handle has a solid structure to increase loading capacity, then the loading capacity is improved, but the user's feeling of gripping is neglected
Solution Approach 1:
The handle employs differentiated material hardness in different portions: the upper portion maintains higher hardness for loading capacity, while the lower portion uses softer material for gripping comfort. This resolves the contradiction between structural strength and user comfort.
Data Source
AI summary
A toolbox handle is provided, including a connecting portion and a grip portion. The connecting portion is provided for being connected to a tool box. The grip portion is connected to the connecting portion, and the grip portion has a circumferential side for gripping. The circumferential side has at least one through hole. An inner circumferential face of each through hole is formed with at least one rib portion, and each through hole is at least partly stepped.