Patent ID: 8615101
Filing Date: 2013-12-24
Classification: H04R

Abstract:
1. A micro-speaker, comprising: a frame including a plurality of walls forming a cavity and a plurality of position blocks extending from inner face of the walls into the cavity; a yoke received in the cavity, including a base wall and a plurality of sidewalls extending vertically from a periphery of the base wall, the sidewalls defining a plurality of flat walls and a plurality of curved walls disposed at corners of the yoke; a magnet disposed at a central portion of the base wall and forming a magnetic gap corporately with the yoke; a diaphragm; a voice coil disposed in the a magnetic gap for driving the diaphragm; wherein the flat wall defines a first step disposed at an upper level for engaging with the position blocks of the frame, the curved wall defines a second step disposed at a lower level for air leaking.