Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1989-12-20
1991-09-24
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
29606, 335128, H01F 300, H01F 708
Patent
active
050517163
ABSTRACT:
The electromagnetic relay, particularly an armature relay, includes a ferromagnetic yoke with a yoke wall, and a ferromagnetic coil core, which is mounted by inserting a neck portion thereof in a hole in the yoke wall, for example in a press fit. To provide a connection between the coil core and the yoke which is more permanent, a support for the coil core is provided on the yoke wall which includes a projection on the inner surface of the yoke wall and a recess in an outer surface of the yoke wall (4) on an opposing side from the projection on the inner surface (27). The projection (28) extends from the inner surface of the yoke wall toward a shoulder (32) of the coil core (7). The neck portion (6) of the coil core (7) extends into the recess (29) and a rivet (39) for fastening the neck portion (6) in the recess (29) of the support (26). The recess (29) and the projection (28) are approximately equal. A method of making the electromagnetic relay is also described.
REFERENCES:
patent: 4720909 (1988-01-01), Knight et al.
patent: 4749977 (1988-06-01), Prouty et al.
Broome Harold
Stribel GmbH
Striker Michael J.
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