Seesaw balance type microminiature electromagnetic relay and method of producing the same
US5304970A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1992 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Jun 18, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4902
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a seesaw balance type microminiature electoromagnetic relay including an armature unit composed of two movable contact springs having a pivot arm formed at the center thereof and contacts formed at every end thereof, an armature having a protrusion on the back side for a pivotal movement, and an insert-molded insulator, a substrate unit composed of a common terminal for mounting the pivot arm electrically connected to a common terminal pin, a pair of switching terminals having fixed contacts for connecting the contacts of the springs electrically connected to terminal pins, and an electromagnet unit composed of a yoke, an exciter coil wound thereon, a flat shape permanent magnet provided between both ends of the yoke, and two terminal pins electrically connected to the start and the end of the exciter coil, respectively; a hoop member is formed in an integrated configuration of a plurality of groups by a press blanking procedure, each group including a pair of movable contact springs, two non-magnetizing plates and two connecting bars connecting both ends of the springs and one end of the non-magnetizing plate; the armature is piled on the free edge of the non-magnetizing plate …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.