Flat electromagnetic relay
US4290037A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1979 |
| Grant date | Sep 15, 1981 |
| Priority date | — |
| Expiry date | Feb 21, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H50/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flat electromagnetic relay which includes a base member having at least two projections extending from a flat surface thereof. At least one hole (or indent), fitting a pertinent one of the projections, is formed in each supporting block that holds a contact, yoke, a hinging spring, or the like. These and similar members are successively stacked on the surface of the base member, with the projections fitted through the holes in the supporting blocks. The free ends of the respective projections are then deformed to secure and hold the components in position. A contact actuating card is put in place after the stack of contact holding blocks is assembled and locked in position. The block through which a contact carrying leaf spring is molded preferably has an end surface formed at an angle such that a portion of the leaf spring may be subsequently bent to extend substantially perpendicular to the remainder of the leaf spring, thereby forming a solder terminal. When used between the base member surface and one of the blocks, a return spring is precisely positioned preferably by an additional projection formed on the base member surface. A dust cover for the relay may have a ridge for …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.