Impact Tool Resilient Shaft Buffering Pivot Damage
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Solution Overview
Problem
Existing impact tools, such as crowbar tools, suffer damage to their pivoting mechanisms when external force is applied to loosen them from stuck work pieces, leading to inefficiency and potential damage.
Innovation Solution
A tool design featuring a resilient member between two shaft structures, allowing the tool head to move toward and away from the shaft structures, which are movably coupled, enabling the tool head to pivot and counteract friction without damaging the pivoting mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If external force is applied to hit the tool to loosen it from the work piece, then the tool can be loosened from the stuck work piece, but the pivoting mechanism suffers damage
Solution Approach 1:
The patent introduces a resilient member (spring) between the first and second shaft structures that acts as a cushioning element. When external impact force is applied to the tool head, the resilient member compresses to absorb and dissipate the shock, preventing direct transmission of damaging forces to the pivoting mechanism while still allowing the impact to loosen the stuck work piece.
Solution Approach 2:
The resilient member serves as an intermediary element between the impacting structure and the pivoting mechanism. It mediates the force transmission by selectively allowing impact forces to pass through to loosen the work piece while blocking the transmission of damaging forces to the pivoting mechanism, thus protecting the mechanism from damage.
2Device complexity
If the tool head is fixed rigidly to the shaft structures, then the structure is simple, but the tool cannot absorb impact forces without damaging the pivoting mechanism
Solution Approach 1:
The patent transforms the rigid connection between the tool head and shaft structures into a dynamic, movable connection. The second shaft structure is designed to move along the first shaft structure, and the resilient member provides elastic deformation capability. This dynamic structure allows the system to adapt to impact forces by moving and compressing, rather than rigidly resisting them, thereby protecting the pivoting mechanism while maintaining reasonable structural simplicity.
3Manufacturing precision
If the second shaft structure is fixed in position, then the alignment is precise, but the tool cannot accommodate movement during impacting operations
Solution Approach 1:
The second shaft structure is designed with movable capability along the first shaft structure while maintaining precise alignment through guided movement paths. The resilient member enables controlled movement during impacting operations, allowing the system to accommodate dynamic loads while preserving alignment precision through the constrained movement geometry.
Solution Approach 2:
The patent allows the position parameter of the second shaft structure to change dynamically during operation. The resilient member enables the distance between shaft structures to vary under load, changing the mechanical parameters of the system to accommodate impact forces while maintaining functional alignment through the designed movement constraints.
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 design effectively reduces damage to the tool by allowing controlled movement and impact, facilitating the loosening of stuck work pieces without compromising the tool's integrity.
Implementation Method 1
a resilient member disposed between the first and the second shaft structures, the second shaft structure being biased by the resilient member
Data Source
AI summary
A tool including a buffer structure adapted to prevent shocks includes a tool head, a first shaft structure, and a second shaft structure. The tool head has a first connection receiving a pivot. The first shaft structure includes a slide. The second shaft structure is disposed on the slide and links with the tool head. The second shaft structure is movable on the slide such that the tool head is moved toward and away from the first shaft structure. The second shaft structure has a second connection receiving the pivot. The tool head is pivotal with respect to the second shaft structure. Further, a resilient member is disposed between the first and the second shaft structures. The second shaft structure is biased by the resilient member.