Patent ID: 8300876
Filing Date: 2012-10-30
Classification: H04R,Y10T

Abstract:
1. A micro-speaker comprising: a frame defining a pair of holes passing through a top and bottom surfaces thereof; a case supported on the frame and cooperatively with the frame defining a chamber therebetween; a diaphragm received in the chamber and attached to the frame; a yoke received in the chamber; a magnet received in the chamber and attached on the top of the yoke; a pole plate received in the chamber and attached to the top of the magnet; a voice coil attached to the bottom of the diaphragm and surrounding the magnet and the pole plate; a circuit board mounted on the bottom of the frame, the circuit board defining a pair of soldering sections formed on the bottom thereof, and a pair of through openings passing through the soldering sections; soldering tin soldered on the soldering sections; and wherein the circuit board is electrically connected with the corresponding ends of the voice coil via a pair of columned terminals to apply electric current to the voice coil, the terminal comprises an upper portion, a lower portion, a body connecting between the upper and lower portions, and a throng portion connected between the body and the low portion, the outer diameter of the body being greater than the outer diameter of the throng portion, and the outer diameter of the low portion being greater than the outer diameter of the throng portion, the low portion being soldered with the ends of the voice coil via heating soldering tin.