Electro-acoustic transducer with radiating acoustic seal and stacked magnetic circuit assembly

摘要

An electro-acoustic transducer includes an accordion-type structure that functions as both an acoustic radiation element and an acoustic seal. In one example, the transducer includes parallel, accordion-type structures that attach to a flat, rectangular diaphragm. The diaphragm is connected to a voice coil. The voice coil and an associated frame are positioned between a magnet arrangement. The magnet arrangement includes stacked magnet pairs positioned between pole pieces to focus magnetic flux.

主权项

1. An electro-acoustic transducer comprising:
a diaphragm; a support structure having first and second ends, wherein the support structure is planar and extends in a first direction; a first accordion-type structure connecting the diaphragm to the support structure, wherein the first accordion-type structure and the diaphragm each vibrate to generate sound; a voice coil configured to generate vibrations, wherein the voice coil is substantially planar and extends in a second direction that is perpendicular to the first direction, and wherein the voice coil is positioned within boundaries defined by the first and second ends of the support structure; and a frame connecting the diaphragm and the voice coil, wherein the frame suspends and maintains a relative position of the diaphragm in relation to the voice coil.