DC Commutator TRIZ Cases

An elastic pressing structure fixes a motor choke coil without adhesive, preventing humidity loosening, vibration noise, and disconnection.

By setting coil pitch apart from magnetic pole pitch, this coreless motor adjusts torque and speed without increasing length or losing coil stiffness.

A radial terminal unit layout integrates a PTC thermistor into the motor power line, simplifying wiring and improving temperature control.

A dual-commutator winding layout lets unpowered rotor coils generate current during off periods while powered coils continue driving the shaft.

Two armatures share one field and use commutators for internal rectification, cutting external rectifiers, complexity, and cost.

An N-pole N-slot magnetic brake stops the rotor quickly while reducing motor vibration, resonance, and noise in roller shutter systems.

An N-pole N-slot magnetic brake stops roller shutter rotors quickly, cutting noise, vibration, and positioning errors while avoiding resonance.

A motor-driven barrel with disc generators delivers continuous AC and DC power without relying on wind conditions or complex storage.

Series-connected submotors widen motor voltage range while reducing heat generation and eliminating heat sinks through switchable winding paths.

An inclined resin end plate maintains seal ring pressure under thermal creep, blocking moisture entry and preserving motor insulation reliability.

Spacing the magnetic ring via a convex support isolates the Hall element from coil current interference, improving position measurement accuracy.

Asymmetrical magnetic fields enable dual speed operation in permanent magnet DC motors, eliminating energy loss from external dissipative elements.

A DC motor armature uses symmetric inner and outer coils to reduce vibration.

Radial nesting of the detector between the stator coil end and bearing reduces axial length while a retainer plate blocks electromagnetic noise.

Stationary commutator segments paired with a rotating magnet rotor optimize electromagnetic field utilization to increase power output efficiency.

A controller-integrated rotating electrical machine uses a straight power line portion to position a current detector for high-accuracy sensing.

Nesting a planetary gear unit inside the magnet structure reduces motor length while maintaining concentricity between the shaft, magnet, and outer cylinder.

An annular bonded sensor magnet integrates a fixing portion with stress reducing geometry for direct shaft press-fitting.

Encapsulated switching arrangement protects contacts from dirt and wear while enabling reliable polarity reversal via rotating brush holder.

A magnetic shield covers the sensor magnet in an electric power steering motor, preventing permanent magnet debris from damaging other parts.

A rotatable connection module attaches to a DC motor housing via centering features to secure electrical interfaces in any orientation.

Variable diameter winding wires offset D-shaped shaft cuts to correct weight balance, preventing vibration and noise while reducing manufacturing complexity.

Blade-equipped insulating washer deflects conductive dust to maintain breakdown resistance in high voltage sealed DC machines.

A four-pole commutator motor with angled brushes generates enhanced current ripples for precise sensorless operation.

A grounded metal element positioned between brushes and inductors absorbs high-frequency electromagnetic radiation, reducing EMI by 8 dB.

Segmented rotor windings with thicker wires improve reliability and durability while reducing the winding process time required for traditional motors.

A spiral fuse component provides overcurrent protection for electric motors using coaxial wire loops.

Variable thickness ring magnets in a polygon housing reduce demagnetization risk while improving space utilization for stable installation.

A commutator electrical machine uses a hook-and-loop winding configuration to guide switching conductors around the armature shaft.

Metal pipe holds ball bearing in direct contact with resin rotor to resolve radial size versus load capacity trade-off.

Adjusts electrical resistance in magnetic bearings to enable accurate sensorless position determination without additional hardware.

Segmented winding systems with shifting angles cancel harmonic waves, reducing losses and acoustic noise in electric machines.

An asymmetric armature core and distinct brush widths shift cogging torque generation timing to lower vibration and noise while maintaining high performance.

Segmenting coils across slots aligns magnetic axes with commutator bars, reducing brush arcing and electromagnetic interference while shrinking motor size.

Axial and radial poles in an electromagnetic actuator communicate magnetic flux across a rotating body, eliminating friction and reducing assembly complexity.

An integrated encoder alternator uses a permanent magnet rotor with periodic pole borders to detect crankshaft angular position via induced voltage signals.

Transposing conductors via groove skips equalizes voltage induction, reducing frequency-dependent losses in high-speed electric machines.

A clamped circuit board on a brush bracket forms a cavity for electric brushes in motor end cover assemblies.

Copper-plated via conductors replace solder joints to lower resistance and boost torque generation.

A magnetic absolute sensor nests inside a hollow rotor shaft to detect rotational orientation without extending the motor axis.

Parallel wire coils boost power density while an EMI component suppresses interference.

Rare earth anisotropic sensor magnet concentrates magnetic flux to resolve isotropic detection accuracy limits and reduce torque ripple.

Axially spaced bearings and biasing mechanisms dissipate impact forces, minimizing component damage from dropping.

Axial alignment of noise prevention and detection elements within the motor end bracket reduces radial enlargement while maintaining electrical connections.

An axial-floating conductor guide adapts to varying stator core heights, preventing insulating paper damage and positional skew during insertion.

A motor-driven surgical instrument integrates a separate charge accumulator to supply peak power for simultaneous tissue cutting and stapling operations.

Radial choke coil arrangement reduces DC motor volume while maintaining noise suppression.

Direct bracket mounting of surface-mount PTC thermistors eliminates extra substrates, maintaining torque while lowering internal resistance.

Segmented commutator design reduces brush sparking, extending lifespan and simplifying winding.

A spiral fuse portion encloses a magnetic core to function as an integrated choke and overcurrent protection device.

Electromagnetic sensor system measures micro-displacements in clevis actuators, replacing strain gauges to eliminate maintenance and stress damage.