Method to precisely position electromagnetic relay components

Details Method to precisely position electromagnetic relay components Method to precisely position electromagnetic relay components

1991-05-13

1993-06-22

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

296021, 29606, H01F 706

Patent

active

052207200

ABSTRACT:
An electromagnetic relay 38 (FIG. 2 ) includes a cylindrical core 42 concentrically positioned within a coil assembly 40 and press fit into a frame 50, a resiliently mounted armature assembly 56, and electrical contacts 66,68, one mounted on the armature assembly 56 and one disposed in a fixed relationship to the frame 50. The coil assembly 40 is secured to the frame 50 by the use of extrusions 54 which precludes the need for a core head 24 and crush ribs 26 (FIG. 1). After assembling the relay 38, the core 42 is positioned by pressing the armature assembly 56 directly opposite the core 42 until the core 42 travels a predetermined distance beyond the electrical contact point for the contacts 66,68. This method ensures precise positioning of the functional components and negates the accumulation of manufacturing tolerances in the relay 38.

REFERENCES:
patent: 3277558 (1966-10-01), Shaffer, Jr.
patent: 3694912 (1972-10-01), Sprando et al.
patent: 4596972 (1986-06-01), Knight et al.
patent: 4720909 (1988-01-01), Knight et al.
patent: 4749977 (1988-06-01), Prouty et al.

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