Angled magnetic coupling

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Solution Overview

Problem

Existing magnetic couplings are ineffective for transmitting torque to a driven mechanism axis arranged at an angle relative to the drive mechanism axis, leading to inefficient and pulsating rotation due to uneven magnetic pole patterns and inability to operate in angled or separated configurations.

Innovation Solution

An angled magnetic coupling using composite cylindrical magnets with diametrically polarized segmental magnets, arranged at angles between 90 to 270 degrees, allowing for contact-free torque transmission between perpendicular axes, suitable for use in aggressive environments and separated spaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional magnetic couplings with radial magnet arrangement are used, then torque transmission along coaxial axes is achieved, but torque transmission to angled axes is not possible

Engineering Contradiction:

Improveangular adaptabilityVSAvoidtorque transmission reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The magnet assembly is divided into multiple segmental magnets (at least three) arranged around the circumference, each contributing to the magnetic field distribution. This segmentation enables the coupling to handle angled axis configurations while maintaining reliable torque transmission through optimized magnetic pole patterns.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The magnetic pole pattern is designed with asymmetric distribution of magnetic poles around the circumference, specifically optimized for angled axis configurations (90-270 degrees). This asymmetric arrangement creates effective magnetic coupling forces that enable reliable torque transmission between non-coaxial shafts.

Inventive Principle:

Principle #4Asymmetry

2Adaptability or versatility

If magnetic couplings with different sized magnet regions of opposite polarity are used, then angular configuration is achieved, but pulsating rotation and wobbling occur

Engineering Contradiction:

Improveangular configuration capabilityVSAvoidrotational stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

Each segmental magnet is designed with specific local magnetic properties, where opposite polarity segments are strategically positioned to create a balanced magnetic field distribution. This local quality optimization ensures uniform magnetic forces throughout the rotation cycle, eliminating pulsating rotation and wobbling while maintaining angular configuration capability.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The magnetic pole pattern is designed to create equipotential magnetic field distribution around the circumference, ensuring that the magnetic coupling forces remain balanced during rotation. This equipotential design prevents rotational instability and wobbling by maintaining consistent magnetic interaction forces throughout the rotation cycle.

Inventive Principle:

Principle #12Equipotentiality

3Power

If contact between drive and driven axes is used, then torque transmission is achieved, but operation in aggressive environments becomes problematic

Engineering Contradiction:

Improvetorque transmission capabilityVSAvoidenvironmental degradation

Core Design Contradiction:

PowerVSObject-affected harmful factors

Solution Approach 1:

The magnetic coupling replaces direct mechanical contact between drive and driven shafts with a contactless magnetic field-based torque transmission system. This substitution eliminates mechanical wear and the need for lubrication, enabling reliable operation in aggressive environments where conventional mechanical couplings would fail.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Ensures continuous and efficient rotation transmission across a range of angles, maintaining torque consistency and preventing wobbling, even in environments where lubrication or contact is not possible, by utilizing alternating polarities of segmental magnets to maintain a stable magnetic bond.

Implementation Method 1

magnetic coupling comprising magnets for a drive mechanism and magnets for a driven mechanism

Methodology Applied

Scientific EffectMagnetic coupling: Magnetism

Implementation Method 2

the segmental magnets of one pair have an opposite polarity in relation to the segmental magnets of the other pair so as the radial segments with opposite polarity are alternating around the circumference

Methodology Applied

Scientific EffectMagnetic pole interaction: Magnetic Field

Data Source

PatentEP4263876B1Angled magnetic coupling

Publication Date: 2024.12.18 PL PROJECT LTD

Figure 1~3
Figure 4.1~4.5
Figure 5

AI summary

An angled magnetic coupling comprising two composite cylindrical magnets (A, B) for drive mechanism and for driven mechanism, and the axes of said two composite cylindrical magnets (A, B) are arranged at an angle of 90 to 270 degrees relative to each other, wherein each of said two composite cylindrical magnets (A, B) is composed of two pairs of segmental magnets (3, 5 and 4, 6) and each of said segmental magnets (3, 4, 5, 6) is a diametrically polarized segment, whereat the segmental magnets of each pair (3, 5 and 4, 6) are arranged opposite each other in said composite cylindrical magnets (A, B), and have the same polarity at the inner and outer sides of the segment, further, the segmental magnets of one pair (3, 5) have an opposite polarity in relation to the segmental magnets of the other pair (4, 6).