Speaker device

A speaker device, comprising:

• a frame, a vibration unit fixed to the frame, and a magnetic circuit unit driving the vibration unit to vibrate and produce sound, wherein
• the vibration unit comprises a diaphragm fixed to the frame and a voice coil driving the diaphragm to vibrate;
• the magnetic circuit unit comprises a yoke and a magnet assembly, the magnet assembly is accommodated and fixed in the yoke and is spaced apart from the yoke to form a magnetic gap;
• and the voice coil is inserted in the magnetic gap;
• the yoke comprises a yoke bottom wall, a yoke side wall having a ring shape and bending and extending from a periphery of the yoke bottom wall toward the diaphragm, and a flange bending and extending from an end of the yoke side wall close to the diaphragm toward the frame;
• and the magnet assembly is fixed to the yoke bottom wall and is spaced apart from the yoke side wall to form the magnetic gap;
• and
• the flange comprises a first section bending and extending from the end of the yoke side wall close to the diaphragm toward the frame, and at least one second section extending from an end of the first section away from the yoke side wall toward the frame;
• a distance between a side of the first section close to the diaphragm and the diaphragm is smaller than a distance between a side of each of the at least one second section close to the diaphragm and the diaphragm;
• a side of the first section close to the at least one second section and the at least one second section enclose a fixing step;
• and the at least one second section is fixed to the frame;
• wherein the frame is made of a metal material, and a side of the at least one second section close to the frame is in contact with and fixed to the frame by laser spot welding.