DC Commutator TRIZ Cases
- Choke Coil Fixing Structure Using Elastic Press Fit
An elastic pressing structure fixes a motor choke coil without adhesive, preventing humidity loosening, vibration noise, and disconnection.
- Coreless Motor Coil Pitch Layout for Torque-Speed Tuning
By setting coil pitch apart from magnetic pole pitch, this coreless motor adjusts torque and speed without increasing length or losing coil stiffness.
- Motor Terminal Unit Layout for Integrated PTC Thermistor Wiring
A radial terminal unit layout integrates a PTC thermistor into the motor power line, simplifying wiring and improving temperature control.
- Dual-Commutator Electric Motor for Parallel Internal Current Generation
A dual-commutator winding layout lets unpowered rotor coils generate current during off periods while powered coils continue driving the shaft.
- Dual-Armature DC Motor Layout With Single-Field Internal Rectification
Two armatures share one field and use commutators for internal rectification, cutting external rectifiers, complexity, and cost.
- Magnetic Brake Structure for Quiet Roller Shutter Motors
An N-pole N-slot magnetic brake stops the rotor quickly while reducing motor vibration, resonance, and noise in roller shutter systems.
- Magnetic Brake Structure for Roller Shutter Motor Positioning
An N-pole N-slot magnetic brake stops roller shutter rotors quickly, cutting noise, vibration, and positioning errors while avoiding resonance.