Miniature motor and method of making same
US5270599A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1992 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Jul 22, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/145
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A miniature motor including a case made of a metallic material and formed into a bottomed hollow cylindrical shape and having a permanent magnet fixedly fitted to the inner circumferential surface thereof, a rotor comprising an armature and a commutator, a case cap fitted to an open end of the case and having brushes making sliding contact with the commutator, and terminals electrically connected to the brushes; the rotor being rotatably supported by bearings provided on the bottom of the case and the case cap; in which the input terminals are mounted on the case cap made of a resin material and fixedly fitted to the case cap by means of lanced and raised retainer pieces formed on the input terminals near the outer end face of the case cap is disclosed. Also disclosed is a method of making miniature motors comprising a process of press-fitting input terminals into a case cap, and a process of forming lanced and raised retainer pieces in the vicinity of the outer end face of the case cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.