Magnetic latching solenoid assembly

Details Magnetic latching solenoid assembly Magnetic latching solenoid assembly

1996-02-15

1998-03-31

Berhane, Adolf

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335255, H01F 708

Patent

active

057343101

ABSTRACT:
A magnetic latching solenoid assembly comprises a bobbin having a central aperture formed therethrough along a central axis and having a solenoid coil wrapped therearound, and a metal polepiece secured at least partially within the bobbin. An at least partially metal armature is slidably movable within the central aperture. The polepiece includes a depression formed therein with a first flat formed at the bottom of the depression. The depression has a first wall formed at a first angle with respect to the central axis. The armature has a protruding portion for cooperation with the depression, the protruding portion having a second flat formed thereon for metal-to-metal engagement with the first flat, and having a second wall formed at a second angle greater than the first angle so that the first and second walls do not contact each other when the first and second flats are in contact.

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IBM Technical Disclosure Bulletin, vol. 24, No. 10, Mar. 1982, p. 5205 XP002031094 -O.V. Berry & Al.: "Design aids for setting solenoid air gaps" .

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