Method of coupling magnetic position detecting device with brushless dc motor and the coupling structure thereof
US5184038A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1992 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Feb 20, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K15/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic pole position detecting device is coupled with a brushless dc motor by determining the angular positional relationship between an input shaft of a rotor, a detecting device body, and a locating mark formed on a detecting device casing by outputting absolute values indicative of the angular position of the rotor, coupling an output shaft of the brushless dc motor with the rotor of the detecting device, driving the dc motor externally, and forming another locating mark on the motor casing in alignment with the locating mark formed on the detecting device casing, under a condition in which the angular positional relationship between the motor casing and the detecting device casing is so determined that motor induced voltage is in phase with waveform of the absolute values output. Therefore, it is possible to easily replace the magnetic pole position detecting device with a new one in a short time at any job site, independently from the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.