Dynamic micro speaker of composite mode of vibration and sound

摘要

PURPOSE: A dynamic micro speaker of a sound vibration complex mode is provided to prevent distortion of sound and regenerate the clear sound by using the secondary suspension. CONSTITUTION: A dynamic micro speaker of a sound vibration complex mode includes a sound generator and a vibration generator. The sound generator includes a first magnetic circuit, a primary suspension, a vibration plate, a first coil, and a secondary suspension. The first magnetic circuit includes a first yoke coupled to a center hole of a bottom cover, a first permanent magnet, and a first plate. The primary suspension(26) and the vibration plate(24) are formed with one body. The secondary suspension(25) is installed between the first plate and the vibration plate. The first coil is adhered to a bottom part of the secondary suspension. The vibration plate is adhered to a top part of the secondary suspension. A predetermined part extended from an edge of the secondary suspension is connected to an electrode terminal of a PCB. The vibration generator includes a second magnetic circuit, a plate spring, a second coil, and a switch. The second circuit includes a second yoke, a second permanent magnet, and a second plate. The plate spring is used for supporting the second yoke. The second coil is installed between the second yoke and the second plate. The switch is used for switching the DC power to the second coil.