Linear Actuation With Rotary Support
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-03
Rotary actuators are generally used in devices requiring a simple, inexpensive and efficient actuator mechanism, and an undesirable compromise results wherein the transducer moves in an arc whose radius is governed by the length of the rotating arm holding the transducer. This nonlinear movement causes undesirable skewing of magnetic heads or other devices, which are susceptible to this misalignment. The figure shows a simple mechanism in which a transducer can move in a substantially radial direction while being supported by a rotating arm that can be either driving or driven. Transducers 3 are mounted on support 4, which in turn is pivoted on flexures 5, 6 and 7. Flexure 5 is attached to rotary arm 8 pivoting at 9. Flexure 7 is grounded. Flexure 6 connects support 4 to link 10.