2results about How to "Improve magnetic utilization" patented technology

The utility model discloses a sounding unit, which comprises a yoke, a plurality of voice coils and at least four central magnetic structures, the yoke is provided with a plurality of longitudinal windows and a plurality of transverse windows, the longitudinal windows are communicated with the transverse windows, two opposite sides of the longitudinal windows are respectively provided with longitudinal flanges, and two opposite sides of the transverse windows are respectively provided with transverse flanges; the central magnetic structures are arranged on the yoke, the at least four central magnetic structures are arranged in an N * M rectangular array, N is an even number greater than or equal to 2, and M is an even number greater than or equal to 2; longitudinal windows are correspondingly arranged between every two adjacent columns of center magnetic structures, and transverse windows are correspondingly arranged between every two adjacent rows of center magnetic structures. The magnetic poles of the two adjacent central magnetic structures face opposite directions; the voice coils and the center magnetic structures are arranged in a one-to-one correspondence mode, and when the voice coils are powered on, the current flow directions of the adjacent edges of every two adjacent voice coils are the same. The sound production unit overcomes the problem of vibration sound production of a sound production unit with a multi-voice-coil structure in a non-starting state.

The utility model discloses a micro loudspeaker, including magnetic circuit system, insulating boss, centering support piece and two voice coils, magnetic circuit system includes yoke, center magnetic structure and the side magnetic subassembly of setting around center magnetic structure, center magnetic structure and side magnetic subassembly are arranged on yoke respectively, and center magnetic structure includes two center magnetic subassembly, and center magnetic subassembly has the through hole of upper and lower through -and -through, and yoke has the via hole of communicating through -hole and outside, insulating boss is located at the via hole, and insulating boss is embedded with conducting part, and the partial area of conducting part is exposed on the bottom surface of yoke, and centering support piece includes first mounting portion, and the both ends of first mounting portion are correspondingly set to the hollow region of two voice coils, and first mounting portion is connected with the elevated portion corresponding to through -hole, and the elevated portion is connected with the cantilever portion in through -hole, and the cantilever portion is connected with the second mounting portion fixed on insulating boss. This micro loudspeaker has the advantage of high performance.