Hand Tool Pressing Spring for Stable Positioning
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Solution Overview
Problem
Traditional switchable hand tools are inconvenient to operate and suffer from ineffective positioning, often resulting in slack or loose fixing issues due to their design relying on a switching button for switching and releasing the fixing status.
Innovation Solution
A hand tool design featuring a grip part with an interior passageway, guide groove, and flexible stopper parts, along with a tool part comprising a tool rod, pivot head, external fixing pieces, pressing spring, pivot shaft, and fixing element, allowing direct switching between collinear and vertical relationships with strong, stable positioning without looseness, using a pressing spring to maintain these relationships.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a switching button design is used to release fixing status, then switching function is achieved, but operational convenience deteriorates and positioning stability deteriorates
Solution Approach 1:
The patent removes the traditional switching button component entirely and extracts its function, replacing it with a direct manual rotation operation where the tool rod itself serves as the switching mechanism. This eliminates the need for separate switching components and improves both operational convenience and positioning stability.
Solution Approach 2:
The tool rod serves dual functions: it is both the working component and the switching mechanism. By rotating the tool rod directly, the user performs both the operational action and the switching action simultaneously, making the system self-sufficient and eliminating the need for separate switching controls.
2Adaptability or versatility
If a switching button is used for fixing status, then switching capability is achieved, but positioning firmness deteriorates and loosening resistance deteriorates
Solution Approach 1:
The patent implements dynamic positioning through the pressing spring that automatically adjusts and maintains firm contact between the tool rod and external fixing pieces during rotation. The spring provides continuous adaptive pressure that ensures strong positioning firmness while allowing smooth switching between collinear and vertical relationships.
Solution Approach 2:
The pressing spring changes its compression parameter dynamically as the tool rod rotates between positions. The spring compression varies to maintain optimal contact force throughout the switching process, ensuring both switching capability and positioning firmness are achieved simultaneously.
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 hand tool enables simple and convenient operation with firm, stable positioning, avoiding looseness and operational inconveniences by utilizing a strong pressing spring to maintain tool rod and external fixing piece relationships, allowing for effective use in various applications without slacking or loosening.
Implementation Method 1
The pressing spring comprises a fixing hole, a spring part, and a protruding guide part
Implementation Method 2
the pair of flexible stopper parts is deformable and restorable after deformation
Data Source
AI summary
The present invention relates to a hand tool having a pressing spring. The hand tool comprises a grip part and a tool part. The tool part comprises a tool rod, a tool rod pivot head, a pair of external fixing pieces and a pressing spring. The pair of external fixing pieces is pivotally connected to the tool rod pivot head. When the tool rod is rotated, a relationship between the tool rod and the pair of external fixing pieces is switchable to one of a collinear relationship or a vertical relationship thereof, and the tool rod is pressed by the pressing spring without being loose after switching. Accordingly, the present invention has advantages and effects of directly switching, firm and stable positioning and not easy to be loose, and so on.