Magnetic Hinge Assembly Torque Compensation
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Solution Overview
Problem
Existing computing device hinge assemblies face challenges in maintaining stable orientations and resisting gravitational torque, particularly when the device is tilted, due to the lack of effective torque compensation, which can lead to instability and potential damage to display components.
Innovation Solution
The implementation of a hinge assembly using radially magnetized permanent magnets that generate adjustable magnetic fields, providing a restoring torque to counteract gravitational torque, allowing for stable orientation adjustment with minimal user force and reducing the risk of display damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional hinge assemblies are used without torque compensation, then the device structure remains simple, but the device becomes unstable when tilted and gravitational torque cannot be effectively counteracted
Solution Approach 1:
The patent replaces traditional mechanical torque compensation mechanisms (such as springs or counterweights) with a magnetic field-based system. Permanent magnets generate magnetic fields that interact with ferromagnetic materials in the display housing to produce restoring torque, eliminating the need for complex mechanical components while achieving stable orientation control.
Solution Approach 2:
The patent introduces magnetic fields as an intermediary between the hinge assembly and the display housing. The magnetic field acts as a mediator to transmit torque without direct mechanical contact, allowing for smooth, contactless torque application that compensates for gravitational effects and maintains device stability.
2Force
If permanent magnets are added to the hinge assembly to provide restoring torque, then gravitational torque is effectively counteracted, but the device complexity increases
Solution Approach 1:
The permanent magnets in the hinge assembly automatically generate restoring torque in response to gravitational forces without requiring external control systems, sensors, or power sources. The magnetic field interaction occurs passively, with the system self-regulating to maintain equilibrium positions based on the device orientation.
Solution Approach 2:
The patent utilizes the inherent magnetic field properties of permanent magnets to generate variable restoring torque that automatically adapts to different device orientations. By changing the magnetic field interaction parameters through orientation changes, the system provides appropriate torque compensation for various tilt angles without additional control mechanisms.
3Adaptability or versatility
If the aligned orientation of magnetic fields is made adjustable, then the device can be positioned at various ergonomic angles, but the control mechanism becomes more complex
Solution Approach 1:
The patent creates a dynamic adjustment system where the magnetic fields can be reoriented to different aligned positions, allowing the device to assume various stable orientations. The adjustment mechanism enables the magnetic field alignment to change dynamically, providing multiple ergonomic viewing angles while maintaining stability at each position through magnetic field interaction.
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 magnetic hinge assembly effectively stabilizes the device across various orientations, reduces the need for additional structural support in the display housing, and allows for ergonomic adjustments with minimal user input, enhancing user experience and device durability.
Implementation Method 1
permanent magnets that generate a first magnetic field and a second magnetic field
Implementation Method 2
hinge assembly includes permanent magnets that generate a first magnetic field and a second magnetic field
Implementation Method 3
generate a clockwise restoring torque responsive to rotation of the housing in a first rotational direction from the aligned orientation
Data Source
AI summary
A system can include a housing that defines a first plane; a base that defines a second plane; and an adjustable hinge assembly that rotatably couples the base and the housing about an axis, where the hinge assembly includes permanent magnets that generate a first magnetic field and a second magnetic field orientable with respect to each other via rotation of the housing with respect to the base, where the first magnetic field and the second magnetic field include an aligned orientation, generate a clockwise restoring torque responsive to rotation of the housing in a first rotational direction from the aligned orientation, and generate a counterclockwise restoring torque responsive to rotation of the housing in a second, opposite rotational direction from the aligned orientation, and where the aligned orientation is adjustable to correspond to a selected angle between the first plane and the second plane.