Patent ID: 8774448
Filing Date: 2014-07-08
Classification: H04R

Abstract:
1. A speaker, comprising: a vibrating unit, including a diaphragm, a voice coil driving the diaphragm to vibrate along a vibration direction, and an elastic plate coupled with the diaphragm for electrically connecting to the voice coil, the diaphragm including a position portion serving as an edge of the diaphragm; a magnetic circuit unit supporting a combination of the diaphragm and the elastic plate, including a base board, a first magnetic conduction member disposed at a central portion of the base board, a second magnetic conduction member around the first magnetic conduction member, and a magnetic gap formed by the first and second magnetic conduction members; a projection of the diaphragm along the vibration direction on the base board being within an outline of the base board; wherein the magnetic circuit unit further includes a first pole plate attached on the first magnetic conduction member, and a second pole plate attached on the second magnetic conduction member, a top surface of the second pole plate being higher than that of the first pole plate; wherein the speaker further includes an outer side formed by the second magnetic conduction member of the magnetic circuit unit and the edge of the diaphragm, the elastic plate includes a terminal protruding outwardly from the outer side of the speaker, the terminal being provided with a plurality of electrodes electrically connecting to the voice coil.