ELECTRO-ACOUSTIC TRANSDUCER

摘要

An electro-acoustic transducer includes a frame, a magnet circuit unit accommodated in the frame, and a vibration unit engaging with the frame. The magnetic circuit unit includes a lower plate, a main magnet positioned centrally on the lower plate, a pair of auxiliary magnets positioned spaced from the main magnet for forming a magnetic gap, and a pair of upper plates attached to the auxiliary magnets, respectively. Each upper plate includes a base body integrated with the frame, and a restricting part extending from the base body and engaging with an inner surface of the auxiliary magnet facing the main magnet.

主权项

1. An electro-acoustic transducer, comprising:
a frame defining a plurality of sidewalls for forming a receiving space; a magnetic circuit unit accommodated in the receiving space, the magnetic circuit unit comprising:
a lower plate;a main magnet positioned on a central portion of the lower plate;a pair of auxiliary magnets positioned on two side portions of the lower plate respectively and positioned spaced from the main magnet for forming a magnetic gap,a pair of upper plates, each including a base body attached on a top surface of each auxiliary magnet and integrated with the sidewalls, and a restricting part connected with the base body and engaging with an inner surface of the auxiliary magnet facing the main magnet; and a vibration unit including a voice coil and a diaphragm connected with the voice coil; the voice coil partially received in the magnetic gap.