Electromagnetic switch

Details Electromagnetic switch Electromagnetic switch

1992-12-16

1993-10-12

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335131, H01H 6702

Patent

active

052529355

ABSTRACT:
An electromagnetic switch comprising: an excitation coil wound around a bobbin made of a synthetic resin material; a yoke accommodating said excitation coil; a fixed core fixed inside of a first end side of said yoke; a magnetic path plate contacting an outer end of a flange at a second end side opposite to said first end side of said bobbin and fixed inside of said second end side of the yoke; a bush made of a nonmagnetic material and fixed in an inner periphery of the bobbin; a movable core movably supported in said bush in the axial direction thereof; and terminal means closed by urging to press said terminal means by a magnetic suction of said movable core to said fixed core; wherein a plurality of arms are extended in the axial direction from an inner peripheral portion of the bobbin at the second end side thereof; a receiving portion is formed at end portions of said respective arms integrally therewith; cut-off portions are provided for passing the respective arms therethrough at an inner peripheral portion of said magnetic path plate; and the retracted movable core is received by an inner end face of said receiving portion.

REFERENCES:
patent: 4293835 (1981-10-01), Davis et al.

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