Progressive Magnetic Closure Assembly for Consistent Opening Force
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Solution Overview
Problem
Existing devices face issues with changing hinge torque over time, leading to inconsistent user experience in closing and opening operations due to varying magnetic forces.
Innovation Solution
A progressive closure assembly using compressible materials and biasing elements to adjust magnetic forces over time, matching the changing hinge torque profile, ensuring consistent user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic elements are used to hold device portions together, then the device portions are securely held together, but the magnetic force becomes inconsistent over the device's life due to hinge torque changes
Solution Approach 1:
The patent applies dynamics by making the magnetic force adjustable over time through a mechanism that changes the distance between magnetic elements. The biasing element (spring) and compressible material create a dynamic system where the magnetic force automatically adjusts as the hinge torque changes, maintaining consistent holding force throughout the device's operational life.
Solution Approach 2:
The patent changes the physical parameter of distance between magnetic elements to adjust magnetic force. By using a biasing element and compressible material, the distance parameter is made variable, allowing the magnetic force to be tuned dynamically to compensate for hinge torque degradation over time.
2Stability of the object's composition
If hinge torque is increased to prevent device springing back open, then device closure stability is improved, but the force required to open the device becomes excessive
Solution Approach 1:
The patent applies counterweight by using magnetic attraction force to counterbalance the hinge torque that causes the device to spring back open. The magnetic elements create an opposing force that stabilizes the closed position without requiring excessive hinge torque, thereby maintaining closure stability while preserving ease of opening.
Solution Approach 2:
The patent adjusts the magnetic force parameter to precisely counterbalance hinge torque. By tuning the distance between magnetic elements through the biasing mechanism, the magnetic force is optimized to provide just enough counteracting force for stability without creating excessive resistance to opening.
3Ease of operation
If device portions are held together with magnetic force, then easy opening and closing is achieved, but hinge torque degradation over time causes inconsistent user experience
Solution Approach 1:
The patent implements feedback through a mechanical system that automatically responds to hinge torque changes. The biasing element and compressible material create a feedback loop where changes in hinge torque are detected and compensated for by automatic adjustment of the magnetic force, maintaining consistent ease of operation throughout the device's life.
Solution Approach 2:
The patent applies self-service by designing a system that automatically adjusts itself without user intervention. The biasing element and compressible material enable the magnetic force to self-regulate in response to hinge torque degradation, maintaining consistent operational characteristics without requiring user adjustment or maintenance.
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
Maintains a consistent force requirement for opening and closing device portions throughout the device's life by dynamically adjusting magnetic forces to counteract changing hinge torque.
Implementation Method 1
a compressible material that compresses over time thereby decreasing a distance between the magnetic elements
Implementation Method 2
magnetic forces can be used to bias, and thereby hold, two device portions together
Data Source
Figure 1A~1C
Figure 2A~2B
Figure 3A~3C
AI summary
The description relates to devices and progressive forces between device portions. In one example, an extent of compression of a compressible material component can affect magnetic attraction between the device portions.