Moving-magnet motor
AssigneeApple Inc.
InventorsOnur I. Ilkorur, Oliver Leonhardt, Matthew A. Donarski, Christopher Wilk
Life of this patent
Estimating the term…
Abstract
A moving magnet motor comprising: a stationary voice coil coupled to a frame; a moving magnet assembly movably coupled to the frame and operable to move relative to the stationary coil, the moving magnet assembly comprising a magnet and a flux concentrating member that define a gap within which the stationary coil is positioned; and an actuating surface coupled to the moving magnet assembly, and wherein a movement of the moving magnet assembly drives a movement of the actuating surface along an axis of translation.
Claims20
A moving magnet motor comprising:
- a frame;
- a coil coupled to the frame and having a first end and a second end defining a winding height of the coil;
- a magnet assembly operable to move relative to the coil and the frame, the magnet assembly comprising a magnet and a flux concentrating member that define a gap within which the coil is positioned and a dominant flux density region along an entire winding height of the coil;
- and
- an actuating surface coupled to the magnet assembly, and wherein a movement of the magnet assembly drives a movement of the actuating surface.
A loudspeaker moving magnet motor assembly comprising:
- a continuous voice coil coupled to a frame;
- a diaphragm positioned over the continuous voice coil and coupled to the frame;
- and
- a magnet assembly coupled to the diaphragm, the magnet assembly having a first magnet member and a second magnet member that define a gap within which the continuous voice coil is positioned, and the first magnet member and the second magnet member are operable to focus a magnetic flux density toward the continuous voice coil and translate along the continuous voice coil to drive a movement of the diaphragm along an axis of translation.
Dependencies are inferred from the claim text.