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US 4,377,798 AGranted
Electromagnetic relay
AssigneeSiemens Aktiengesellschaft
InventorHelmut Schedele
Life of this patent
Estimating the term…
Abstract
An electromagnetic relay has a coil spool having a hollow interior serving as a chamber for a number of relay contact elements which are actuated by a flat armature. A contact mount carrying contact springs is inserted into the coil spool at an open end thereof, with the opposite end of the coil spool being closed by an end wall having stationary contact elements embedded therein. The coil spool has an opening beneath the winding for adjustment purposes, which is sealed by a foil prior to the application of the winding.
Claims7
An electromagnetic relay comprising:
- a one-piece coil body having a hollow interior forming a contact chamber inside said relay and about which an electromagnetic coil is wound,
- said coil body having one open end communicating with said contact chamber and an opposite end closed by a vertical wall integrally formed with said coil body;
- a plurality of movable spring contact elements disposed in said contact chamber substantially axially parallel to one another;
- a plurality of stationary counter contact elements disposed in said contact chamber for making and breaking with said movable spring contact elements, said movable spring contact elements and said counter contact elements projecting into said contact chamber from opposite ends thereof and overlapping at their respective contact-making ends;
- a contact mount inserted and fitted in said open end of said coil body for carrying said movable contact elements,
- said stationary counter contact elements being embedded in said vertical wall;
- a yoke plate and an armature for actuating said movable spring contact elements, said yoke plate and said armature also mounted on said contact mount;
- and
- said coil body having at least one radial opening communicating with said contact chamber in a region of said contact-making ends of said movable and stationary contact elements,
- said opening permitting adjustment and alignment of said contact elements in said contact chamber after assembly thereof and said opening being subsequently covered by said electromagnetic coil winding.
7 more elements
Dependencies are inferred from the claim text.