GB935022A - Improvements in or relating to electromagnetic relays - Google Patents

Abstract

935,022. Electromagnetic relays. SIEMENS & HALSKE A.G. Aug. 10, 1960 [Aug. 19, 1959], No. 27736/60. Class 38 (5). [Also in Group XXXIX] A set of electromagnetic relays in which the magnetic parts carry contacts and act as electrical conductors includes at least two aligned armatures having their free ends facing each other and overlapping a core member extending perpendicular to the armatures. As shown in Fig. 1, two reed spring armatures 2, 3, secured at their remote ends, overlap a core member 1 and are surrounded by individual energizing coils 6, 7 and holding coils 9, 10, connection togs 11 ... 13 are provided and flux return members 4, 5 are insulated from the armatures or core member or from both. A number of coplanier aligned armature pairs may co-operate with a common core member and flux return members (Fig. 2, not shown) and a number of such arrangements can be mounted between carrier layers 24 (Figs. 3 to 6) so as to be superposed as described in Specification 935,023. Each carrier 24 has recesses 25 separated by webs 26 and the common core member 35 is formed to extend into the recesses and across the webs, with terminal togs 40 . projecting at the ends. Contact springs 36 are welded to the core 35 and are slotted to form fingers 37, 38, each carrying a cylindrical contact 39. Flux members 27 for each end of each recess 25 have their edges resting on the edges of the recesses and are located by slots 33 with projections 45 in the recesses. Each armature 28 is rigid member carrying a contact cylinder 34 for co-operation with contacts 39 and is retained on a pivotal boss 31 of the flux member 27 by a spring 30 having its ends secured to the armature 28 and member 27. The flux return path is formed by a member 41, welded to the core member 35, and members 42, 43 which extend to but are electrically insulated from the flux members 27. The chambers formed by the recesses 25 and the flat underside of the next carrier 24 may be sealed by glazing or other means and the chambers may be evacuated or filled with protective gas. The arrangement shown in Figs. 5 and 6 includes four superposed layers of armature assemblies and core members forming twelve relays, each with a coil 51 and four contact armatures. Holding coils 52 are common to two or more relays and the flux return member 56 is undulated to embrace the terminal ends 29 of the flux members 27 and retain insulating plates supporting rectifiers 54 and retaining the coils 51, 52.