Magnetic Gearbox Sequential Linkage Torque Transmission
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Solution Overview
Problem
Existing mechanical systems with physical gear engagement face issues such as jamming, particle interference, lubrication loss, and friction wear, and are not suitable for dusty environments or applications requiring angle changes in shaft rotation without complex gearing.
Innovation Solution
The development of magnetically coupled wheels or magnetic gears that operate without physical contact, using alternating magnetic polarities to transmit torque and rotate shafts, allowing for angle changes and direction reversal without changing magnetic properties, and utilizing a gearbox design that enables tilting and shifting of magnetic gears for varying rotational speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If physical gear engagement is used to transmit rotation, then torque transmission is achieved, but friction wear and jamming occur
Solution Approach 1:
The patent replaces the mechanical contact-based gear system with a magnetic field-based interaction system. Magnets mounted on the periphery of driving and driven gears create magnetic attraction forces that transmit torque without physical contact, eliminating friction wear and jamming while maintaining effective power transmission.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the driving and driven gears. The magnetic field acts as a mediator that transfers rotational motion and torque without requiring direct mechanical contact, thus preventing wear and jamming issues associated with traditional gear engagement.
2Ease of operation
If traditional gear systems are used to change rotation direction, then direction reversal is achieved, but complex gearing structure is required
Solution Approach 1:
The patent employs asymmetric magnet arrangements where the driving gear and driven gear have different numbers of magnets or different magnetic pole configurations. This asymmetry in the magnetic field distribution enables straightforward direction reversal and angle changes without requiring complex multi-gear arrangements, simplifying the overall system structure.
3Reliability
If magnetic gears operate at spaced distance, then contactless operation is achieved, but magnetic linkage strength decreases
Solution Approach 1:
The patent pre-optimizes the magnetic gear design by carefully selecting magnet strengths, sizes, and arrangements before operation. This preliminary design phase ensures that the magnetic attraction force remains sufficient at the required operating spacing, allowing contactless operation while maintaining adequate torque transmission capability.
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 solution provides a contactless mechanism for changing the direction and orientation of rotating members, reducing friction and lubrication needs, and enabling operation in harsh environments by maintaining magnetic linkage during tilting and rotation, thus overcoming the limitations of traditional gear systems.
Implementation Method 1
The magnets of one polarity of the driving rotational object attract magnets of the opposite polarity of the driven rotational object to effect rotation of the driven rotational object
Data Source
AI summary
A gearbox is described that includes a magnetic gear irrotationally mounted on one shaft and a set of gears on another shaft, wherein the one gear is in sequential magnetic interaction with the set of gears to alter to rotational speed of either the one gear or the set of gears.