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Rotary Solenoid

IP.com Disclosure Number: IPCOM000077362D
Original Publication Date: 1972-Jul-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Hendrickson, KE: AUTHOR [+2]

Abstract

This rotary solenoid utilizes a single coil 10 for energizing the solenoid so that its output shaft 12 rotates through a predetermined angle.

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Rotary Solenoid

This rotary solenoid utilizes a single coil 10 for energizing the solenoid so that its output shaft 12 rotates through a predetermined angle.

The solenoid comprises two outer stator sections 14 and 16 connected by an annular part 18 of magnetic material. Stator sections 14 and 16 are, respectively, provided with inwardly extending teeth 14a and 16a. A pair of rotor sections 20 and 22 are fixed on shaft 12 and have a washer 24 of magnetic material disposed between them. Rotor sections 20 and 22 are, respectively, provided with radially extending teeth 20a and 22a, equal in number to the number of stator teeth 14a and 16a. The coil 10 is disposed between the teeth 14a and 20a on one side and the teeth 16a and 22a on the other side and between the parts 18 and 24. A spring 26 is connected at one end to the rotor section 20 by a pin 28 and is fixed at its other end to any suitable stationary element. Spring 26 holds teeth 20a and 22a slightly out of alignment with teeth 14a and 16a; and, when coil 10 is energized, rotor teeth 20a and 22a align with stator teeth 14a and 16a so as to cause a resultant incremental rotation of shaft
12.

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