Method for assembling an electric motor employing a casing body having low dimensional accuracy
US5661894A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1995 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | May 24, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53143
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a method for assembling an electric motor capable of equalizing a gap formed between a stator and a rotor even when a casing body has low dimensional accuracy. In assembling an electric motor, such as an electric motor section of a scroll compressor to be employed in an air conditioner, outer diameters of bearings are made smaller than an inner diameter of the casing body. In a first assembling machine, a first bearing is welded to the casing body with a center of an inner peripheral surface of the stator aligned with a center of the first bearing. A rotary shaft around which the rotor is mounted, is inserted into a center portion of the casing body. In a second bearing assembling machine, a second bearing is welded to the casing body with the center of the first bearing aligned with a center of the second bearing. Consequently, an electric motor can be produced in which the stator, the first bearing, and the second bearing are concentrically aligned with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.