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Reed Switch and Mechanical Actuator

IP.com Disclosure Number: IPCOM000092532D
Original Publication Date: 1966-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Price, GE: AUTHOR

Abstract

The actuating mechanism operates reed switches 10 or 11 each of which is enclosed in glass envelope 12 or 13. The mechanism provides for damping any bouncing tendency of the assembly. Switches 10 and 11 are inserted in circuit board 14 and permanently mounted above permanent magnets 15 and 16. A reed switch is operated when the associated permanent magnet is brought next to the glass envelope immediately adjacent contact points 17 and 18.

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Reed Switch and Mechanical Actuator

The actuating mechanism operates reed switches 10 or 11 each of which is enclosed in glass envelope 12 or 13. The mechanism provides for damping any bouncing tendency of the assembly. Switches 10 and 11 are inserted in circuit board 14 and permanently mounted above permanent magnets 15 and 16. A reed switch is operated when the associated permanent magnet is brought next to the glass envelope immediately adjacent contact points 17 and 18.

Wire actuators 19 and 20, springs 21 and 22, and detents 23 and 24 are arranged to provide limited longitudinal movement of magnets 15 and 16. Spring 21 biases actuator 19 against the upper surface of detent 23. Pushing down against arm 25 moves wire 19 down against the bias of spring 21. Such pushdown continues until wire 19 contacts the lower surface of detent 23 to bring magnet 15 adjacent points 17, operating switch 12.

Similarly, spring 22 biases actuator wire 20 down against the lower surface of detent 24. Pulling hook 26 up moves wire 20 up against the bias of spring 22. Such pullup continues until wire 20 contacts the upper surface of detent 24 to bring magnet 16 adjacent points 18, operating switch 11.

When so operated, the actuating mechanism may have a tendency to bounce. To eliminate this tendency, the mutual attraction between magnets 15 and 16 and switches 10 and 11 is utilized.

Switches 10 and 11 attract magnets 15 and 16 lifting them against envelopes 12 and 13. Thus, a small a...