DUAL TOP PLATE MINIATURE SPEAKER

• Main Authors: CHEN, Ru Bao, ZHENG, Lei, YUEN, Chee Kit
• Format: Patent
• Language: Chinese; English; French
• Published: 13.09.2018
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

The present invention relates to a dual top plate miniature speaker, comprising a diaphragm and a voice coil connected to a lower part of the diaphragm, and further comprising an annular bracket having a U-shaped cross section, a first top plate, a second top plate, a U-shaped iron cup connected in the annular bracket, and a first annular magnet mounted at a center of the U-shaped iron cup. The axes of the annular bracket, the first annular magnet and the U-shaped iron cup coincide. A center of a lower part of the U-shaped iron cup is provided with a through hole. The dual top plate miniature speaker of the present invention has two top plates, two magnets and a dual cavity structure, and is particularly applied as a miniature speaker used as earphones. The two top plates ensure the vibration balance of a vibration system of the speaker and have the effect of focusing magnetic energy. The two magnets provide a higher driving efficiency. The dual cavity structure is beneficial for adjusting the frequency respo