Patent ID: 9456281
Filing Date: 2016-09-27
CPC Classification: H04R

Claim Text:
1. A miniature speaker, comprising: a yoke having a yoke side; a magnetic conduction member positioned in the yoke and keeping a distance from the yoke side for forming a gap therebetween; a magnet positioned by the yoke, and a connecting line from a North Pole thereof to a South Pole thereof being perpendicular to the yoke side; a magnetic conduction membrane suspended in the gap for being activated to vibrate for generating sounds; a closed magnetic loop formed by the magnet, the magnetic conduction member, the magnetic conduction membrane and the yoke; wherein the magnetic conduction membrane includes a pole plate and a driving coil positioned by the pole plate, and the driving coil at least partially overlaps the pole plate in a direction perpendicular to the yoke side.