Electromagnetic relay

Details Electromagnetic relay Electromagnetic relay

1999-12-10

2000-10-31

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Polarity-responsive

335124, 335128, H01H 5122

Patent

active

061408956

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Prior Art
The invention relates to an electromagnetic relay having its bottom and in which terminal tracks for stationary contact elements and terminal elements for stationary and moving contact elements are formed, of rotation extends parallel to the base level, via a coveringr made of insulating material, which cooperates with the stationary contact elements of the base body corresponding to the motion of the armature, and which comprises two transverse torsion spring ridges that project from the covering, the contact springs of said contact spring arrangement and the torsion spring ridges being produced from a common plate, the armature's axis of rotation, and whose winding terminal elements penetrate through the base level perpendicularly, and adjoin which are directed toward the armature, these forming at least one working air (Yap with the armature.
2. Description of the Prior Art
European patent application EP 0 197 391 B2 teaches a polarized relay whose armature is borne by a pair of contact springs. The contact springs are movable together with the armature and are respectively fitted in their center region with a rotational arm that extends transversely, 25 which is connected fixedly to a contact piece at a base body. The rotational arms are formed at the contact springs as one piece and represent elastic torsion elements with limited deformation ability. However, horizontally situated torsion spring ridges carry the disadvantage that the torsion spring ridges are also subjected to forces in the vertical of non-negligible magnitude, thereby limiting a constant precision of the air gap between armature and magnet, and, between stationary and working contacts. Furthermore, in the relay taught in EP 0 197 391 B2, the terminal tabs of the torsion spring ridges are curved downward and connected to center contact terminal pins in a recess at the base body. This produces a poorer accessibility to the fixing points of the terminal tabs of the torsion spring ridges at the center contact terminal pieces, thereby making a simple and precise adjustment difficult.


SUMMARY OF THE INVENTION

The object of the invention is to create a reliable and durable armature bearing for a relay, so that a higher precision of the armature movement is guaranteed, in order to increase Pie reliability and the lifetime of the relay. Further objects relate to the miniaturization of the construction and to the reduction of the number of required relay components. Besides this, there is intended to be an ability to simply and rapidly orient the anchor-spring subassembly in the vertical direction relative to the stationary contacts and to the pole shoes, wherein the adjusting of contact pressure, armature lift and response voltage is simplified in assembly. Furthermore, it is intended to mount the armature in an optimally undisplaceable position relative to the stationary contacts and to the other elements of the magnet system, in order to guarantee both a high shock resistance and stable settings of the relay parameters such as armature lift, contact pressure and response voltage.
This is inventively achieved in that the torsion spring ridges are oriented with their sheet levels perpendicular to the base level and are respectively secured at a center contact terminal pin which projects from the base body perpendicular to the base level.
In an advantageous development, connecting surfaces adjoin at the free ends of the torsion spring ridges, which surfaces are bent out from the sheet levels thereof at right angles. These connecting surfaces are formed at the torsion spring ridges as one piece and adjoin at connecting surfaces of the center contact terminal pins. The torsion spring ridges are bent around at right angles at their free ends in the region of the terminal surfaces and are constructed wider. This contributes to a good accessibility of the securing points and to expanded possibilities for adjusting the armature-spring subassembly. The securing of the connecting surfaces at th

REFERENCES:
patent: 5608366 (1997-03-01), Sako et al.
patent: 5617066 (1997-04-01), Dittmann et al.
patent: 5880653 (1999-03-01), Yamada et al.
patent: 5880655 (1999-03-01), Dittmann et al.
IBM-TDB, vol. 11, No. 11, p. 1587 (1969).

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