Magnetic Circuit TRIZ Cases

An integrated outer-rotor BLDC motor and blower uses overmolded multi-magnet poles to raise torque and airflow while limiting noise and vibration.

Shaped ferromagnetic cores and perpendicular flux paths let one propulsion motor generate thrust, guidance, and levitation along a track.

An integrated rotor fan drives radial airflow through the motor can, improving cooling and power density without enlarging the power tool motor.

Shaped end ferromagnetic cores create a magnetic permeance gradient that cuts force ripple in propulsion motors while improving force distribution and efficiency.

Bridge extension and variable magnet spacing reduce bridge stress and leakage flux while preserving reluctance torque at higher speeds.

An integrated outer-rotor BLDC motor and blower fan improves cooling airflow and torque output in power tool drive units.

A q-axis caulking region between magnet-defined arcs positions laminated steel plates while limiting magnetic flux blockage and torque loss.

Offset linear propulsion motors and shaped ferromagnetic cores cut force ripple, improving efficiency, power density, and high-speed travel.

Larger winding cross sections and higher stator fill reduce empty area, cutting power loss while improving motor cooling in cordless tools.

Shaped magnet slots with a narrowing improve magnetic pole formation, helping permanent magnet rotors stay compact while exceeding 90% efficiency.

A shaft-hub connection links the laminated rotor stack to the carrier, cutting assembly cost while maintaining stable torque transmission.

A channeled distribution plate equalizes magnetic-polymer melt flow into rotor cavities to prevent uneven packing, deformation, and scrap.

Non-magnetic interlocking elements in rotor barriers cut torque ripple and pulsing radial forces while preserving lamination strength.

Two motors and paired pinch rollers combine rotation and translation for precise robotic feeding of elongated percutaneous devices.

A distribution plate with injection and secondary flow channels balances magnetic-polymer melt filling in rotor cavities, reducing defects and scrap.

A relief-feature rotating punch varies lamination key angles during blanking to improve IPM rotor balance and reduce cogging torque.

Direct coupling of an axial motor to treadmill transmission shafts cuts machine volume, lowers maintenance, and stabilizes belt speed.

A centering pin and pivoting bearing align a lightweight rotor on the transmission to minimize air gap, boost power density, and cut noise.

A metal support between PCB-based axes improves planarity, stiffness, and sensor stability in biaxial positioning under electromagnetic drive.

Radar beams sent through a stator opening track rotor-stator air gap and vibration with one integrated unit and vibration decoupling.

Force-aligned ribs in arc-shaped rotor cavities lower q-axis inductance while reducing stress concentration at cavity ends.

Radial slots in the sensing magnet create uniform pole splitting, improving motor sensing sensitivity and rotor position detection accuracy.

A recessed center and raised side cavity wall lower q-axis inductance, boosting reluctance torque, power factor, and motor efficiency.

Electromagnetic transmission replaces springs and torsion bars to deliver stable radial and axial toothbrush motion with longer motor life.

Optimizing magnet pitch to tooth pitch at 1.3-1.4 reduces cogging thrust while increasing thrust density in linear transport motors.

A cuboidal motor unit with direct pulley coupling removes bulky gear space, enabling compact, quiet sliding door drives for heavy leaves.

Multiple magnetization parts create angled magnetic paths to orient magnetic pieces in inclined directions for Halbach array formation.

Isosceles trapezoidal magnets reshape air-gap flux to cut cogging torque ripple, reducing motor vibration, noise, and speed fluctuation.

Sensors mounted on rotor flanges improve temperature detection near the lamination stack, enabling earlier overheating alerts and lower thermal damage risk.

A filler-separated recess lets fixing material secure structural elements with higher dimensional accuracy while simplifying complex injection molding.

Localized bridge thickening and magnet holding protrusions reduce flux leakage while preserving rotor strength, torque, and demagnetization resistance.

Axial flow openings and a segmented bearing shield improve cooling in compact external rotor motors without sacrificing sealed housing protection.

An uneven air gap with a narrower middle and wider ends cuts tooth-slot torque, Back-EMF distortion, and UAV motor noise.

Form-fit holders and adhesive secure rotor magnets without composite casings, cutting weight and magnetic gap while extending temperature range.

Same-pole rotor magnets placed in close contact cut magnetic resistance and eddy current loss, raising magnetic wave gear output.

Stepped magnet side surfaces and radial helix variation cut cogging torque and vibration in axial flux door-drive machines.

By nesting the position sensor inside the rotor assembly, this brushless motor cuts length and weight while preserving rotor feedback.

A powder-metallurgy multi-pole ring magnet replaces separate magnets and carrier plates to cut space, assembly effort, and cogging.

Stepped magnet side surfaces with varying helix angles cut cogging torque, vibration, and noise in axial flux door-drive motors.

Bus bars bent into spaced junction regions remove stator terminals, cutting motor weight and cost while improving insulation gaps and welding.

Positioning plates and sliding push rods hold rotor magnetic pole shoes in place, preventing upward deviation from magnetic repulsion.

Controlling axial magnet spacing to 0.5-3.0 mm limits flux leakage and magnet contact, reducing torque ripple without sacrificing torque.

Heating the rotor above the polymer glass transition softens bonding, enabling intact magnet removal and reuse without shredding.

A rotor-shaft fan with separated intake and exhaust openings cools a compact outer-rotor BLDC motor without added fans or larger diameter.

An elastic protective member hung on the rotor magnet stabilizes winding tension, prevents misalignment, and helps reduce eddy current losses.

A ring-shaped stator resin abutment creates debris space during press fitting, blocking particles from entering the rotor.

Magnetic levitation shuttles replace complex mechanics to position and orient palletizing products with lower maintenance and safer access.

By integrating the stator and pump gear in one housing, this case cuts parts, cost, leakage paths, size, and pump noise.

A zigzag pole skew across laminated rotor segments redistributes air-gap forces to reduce electric machine noise and vibration.