Multifunctional Hand Tool With Dual Action Rods
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hand tools with interchangeable tool heads are limited in torque capacity, making them unsuitable for users with less strength, and often restrict tool head selection to only the top end.
Innovation Solution
A multifunctional hand tool design featuring a metal working rod with two action sections and a grip with a polygonal coupling system, allowing for interchangeable tool heads on both ends and increased torque through a torque exerting element, enabling versatile use and enhanced torque application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If interchangeable tool heads are provided on both ends of the metal working rod, then the versatility and adaptability of the hand tool is improved, but the device complexity increases due to the need for dual action sections and multiple coupling interfaces
Solution Approach 1:
The metal working rod is divided into two distinct action sections, each with its own polygonal portion and insertion hole. This segmentation allows each end to independently accept different tool heads while maintaining a unified rod structure, resolving the contradiction between versatility and complexity by organizing the dual-function capability into modular segments.
Solution Approach 2:
The hand tool is designed with universal compatibility features where both action sections use the same polygonal coupling part interface, allowing the same grip to work with either action section and enabling tool heads to be interchangeably mounted on both ends. This universality achieves versatility without proportionally increasing complexity.
2Force
If torque exerting elements are added to increase torque capacity, then the force capability is improved for users with less strength, but the device complexity increases due to additional torque transmission mechanisms
Solution Approach 1:
The torque exerting element is nested within the existing polygonal coupling part structure. The torque exerting element fits into the insertion hole of the polygonal portion, utilizing the existing geometric interface rather than adding a separate external mechanism. This nesting approach increases torque capacity while minimizing additional structural complexity.
Solution Approach 2:
The polygonal portion acts as an intermediary between the grip's polygonal coupling part and the torque exerting element. It transmits torque from the grip through its engagement with the polygonal coupling part, while also providing the insertion hole interface for the torque exerting element. This intermediary structure enables torque multiplication without requiring direct complex coupling between all components.
3Ease of operation
If the metal working rod is designed with two action sections and multiple polygonal portions, then the ease of operation is improved by allowing tool head interchangeability on both ends, but the manufacturing precision requirements increase to ensure proper engagement of multiple polygonal interfaces
Solution Approach 1:
Both action sections are designed with identical polygonal portions and insertion holes, creating homogeneous interfaces throughout the rod. This homogeneity ensures that the same manufacturing tolerances apply to all polygonal interfaces, simplifying quality control and ensuring consistent engagement characteristics across all tool head connections without requiring different precision levels for different sections.
Data Source
AI summary
A multifunctional hand tool has a grip and a metal working rod. The grip has an assembly hole. A polygonal coupling part is disposed on the assembly hole has. The metal working rod has two action sections, each action section has a polygonal portion, and each polygonal portion has an insertion hole. When one of the two action sections is inserted in the assembly hole, one of the two polygonal portions is engaged with the polygonal coupling part, the other action section is assembled to a suitable tool head, and a torque exerting element may be used to exert torque to the other polygonal portion or the insertion hole thereof. Accordingly, it is possible to provide versatility by having interchangeable tool heads on a top end and a bottom end of the metal working rod, and increasing torque on the top end and the bottom end.