A dynamic balance structure for neodymium iron boron high-frequency voice coils

Abstract

This utility model discloses a dynamic balancing structure for a neodymium iron boron (NdFeB) high-frequency voice coil, belonging to the field of audio equipment technology. The technical solution adopted by this utility model is a dynamic balancing structure for a NdFeB high-frequency voice coil, including a voice drive assembly. The voice drive assembly includes a T-iron, which has a base and a central post. An annular magnet assembly is sleeved on the outer side of the central post. A sliding gap exists between the annular magnet assembly and the central post. A voice coil assembly is slidably disposed within the sliding gap. A sealing element is provided at the upper end of the voice coil assembly. Several spiral fins are circumferentially spaced on the inner wall of the voice coil assembly. This utility model provides a continuous and stable limiting effect for the voice coil assembly through the sliding gap and the cooperation between the spiral fins and the spiral heat dissipation groove. The spiral structure of the internal airflow channel ensures orderly airflow, effectively playing an auxiliary limiting function and improving the stability of the voice coil vibration.

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