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US 4,792,776 AGranted
Miniaturized electromagnetic relay for switching high voltages
AssigneeSiemens Aktiengesellschaft
InventorKlaus Lueneburger
Life of this patent
Estimating the term…
Abstract
A miniature relay (1) capable of switching high currents combines the armature spring function with that of at least one (72, 73) movable contact. One end (71) of the spring is attached to the core (3) while the other end (75) is movable and attached to the armature (75) in the vicinity of the working air gap (36). Variously shaped springs are utilized to support the movable contact and mechanically bias the armature to maintain the working air gap.
Claims14
An electromagnetic relay comprising:
- (a) a base body having at least a generally flat bottom side;
- (b) a coil arranged on that base body having an axis oriented parallel to said bottom side;
- (c) an angled core having at least two legs perpendicular to each other, both extending along a common plane parallel to said bottom side, a first core leg being disposed axially within said coil and a second core leg extending outside the coil and perpendicular to said leg, at least the first core leg having a free end;
- (d) an armature resting against the free end of said first core leg and adaptively shaped to rock thereon and another movable free end portion forming a working air gap between it and a portion of the angled core, the armature also extending parallel to said bottom side;
- (e) a contact assembly having at least one movable contact mounted on a contact spring and at least one counter-contact element, said at least one movable contact and said at least one counter-contact element each electrically connected to a terminal;
- and
- (f) said contact spring having a first end rigidly secured, an accurate central portion generally longitudinally located between its first and second ends directly carrying the one movable contact, and the second end connected to the movable end portion of the armature whereby energizing the coil attracts and moves the armature in a first direction and exerts a compressional force against the second end of the contact spring to control the deflection of the central portion of the spring so as to move the at least one movable contact in a second direction different than said first direction toward said at least one counter-contact element.
4 more elements
An electromagnetic relay comprising:
- (a) a base body having at least a generally flat bottom side;
- (b) a coil arranged on that base body having an axis oriented parallel to said bottom side;
- (c) an angled core having at least two legs perpendicular to each other, both extending along a common plane parallel to said bottom side, a first core leg being disposed axially within said coil and a second core leg extending outside the coil and perpendicular to said leg, at least the first core leg having a free end;
- (d) an armature resting against the free end of said first core leg and adaptively shaped to rock thereon and another movable free end portion forming a working air gap between it and a portion of the angled core, the armature also extending parallel to said bottom side;
- (e) a contact assembly having at least one movable contact mounted on a contact spring and at least one counter-contact element, said at least one movable contact and said at least one counter-contact element each electrically connected to a terminal;
- and
- (f) said contact spring in the form of a wishbone having two legs and an end of one of the two legs rigidly secured, a bifurcated central portion directly carrying at least one movable contact wherein the two legs are joined, and a second end of the other leg connected to the movable end portion of the armature whereby energizing the coil attracts the armature and exerts a compressional force against the second end of the contact spring to control the deflection of the central portion of the spring so as to move the at least one movable contact toward said at least one counter-contact element.
4 more elements
Dependencies are inferred from the claim text.