Hand Tool Alternately-Magnetizing Structure for Precision Instrument Interference
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Solution Overview
Problem
Permanent magnets in conventional hand tools interfere with precision instrumentation by attracting unnecessary components, necessitating a solution to control magnetism effectively.
Innovation Solution
A hand tool with an alternately-magnetizing structure featuring a magnetic component, a resilient member, and an adjustment ring that allows for angular displacement, enabling the magnetic field to move radially between an intramural and extramural area, thus switching the magnetism on and off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a permanent magnet is applied to the hand tool for attaching to a tool case or work spot, then the storage convenience and orientation are improved, but the magnet may interfere with precision instrumentation and attract unnecessary components during use
Solution Approach 1:
The patent applies a resilient member that allows the magnetic member to dynamically change its position between an extramural area (for magnetism-on state providing storage convenience) and an intramural area (for magnetism-off state avoiding interference with precision instruments). This dynamic positioning resolves the contradiction by making the magnetic property controllable rather than fixed.
Solution Approach 2:
The resilient member acts as an intermediary between the magnetic member and the handle portion, enabling controlled movement of the magnetic field. By introducing this intermediary mechanism, the patent allows selective engagement of the magnetic member with the handle portion, thus controlling when the magnetism is active or inactive to avoid interference with precision instrumentation.
2Ease of operation
If a magnet is applied to the hand tool for convenient orientation, then the ease of operation is improved, but the structure becomes more complex
Solution Approach 1:
The patent merges the magnetic member with the resilient member into a single integrated component that can be received within the handle portion's recess. This merging reduces structural complexity by combining multiple elements (magnet mounting structure, switching mechanism, and positioning features) into one unified assembly that maintains convenient orientation functionality.
Solution Approach 2:
The magnetic member is nested within the handle portion's recess, and the resilient member is nested within the same recess to provide biasing force. This nesting arrangement consolidates multiple components within a compact space, avoiding the need for separate mounting structures and reducing overall device complexity.
3Object-affected harmful factors
If the magnetism status can be switched on or off to avoid interference with precision instrumentation, then the harmful factors are reduced, but the manipulation complexity increases
Solution Approach 1:
The resilient member provides self-service by automatically biasing the magnetic member toward the intramural area (magnetism-off state) when not engaged. This eliminates the need for active force or complex control mechanisms to maintain the off state, reducing manipulation complexity while effectively preventing attraction of unnecessary components during precision work.
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
This design provides a simple, cost-effective method to control magnetism, preventing interference with precision instruments and allowing easy manipulation between magnetism-on and magnetism-off states, enhancing user convenience and tool functionality.
Implementation Method 1
The magnetic member defines an effective magnetic field within predetermined confines
Implementation Method 2
The magnetic component is received in the recess of the handle portion, and includes a resilient member and a magnetic member
Data Source
AI summary
A hand tool alternately-magnetizing structure includes a body, at least one magnetic component, and an adjustment ring. The body defines a central axis and a handle portion; in which defines at least one recess dented along a radical direction thereof. The magnetic component is received in the recess of the handle portion, and includes a resilient member and a magnetic member. The adjustment ring is sleeved onto the handle portion and capable of angular displacement, and defines at least one switchable portion dented at an interior wall face thereof for corresponding to the recess of the handle portion. The switchable portion describes an adjacent section and an outlaying section, wherein a wall thickness defined at the adjacent section is greater than that defined at the outlaying section. The effective magnetic field is adjusted by selectively aligning the adjacent section and the outlaying section with the recess of the handle portion.