Sound production device and sound production module

Abstract

The application discloses a sound production device and a sound production module, and relates to the technical field of loudspeakers. The sound production device comprises a shell, a vibration assembly, a magnetic circuit assembly and two transmission mechanisms. The vibration assembly comprises two diaphragms and two voice coils. The two diaphragms are connected to two opposite ends of the shell along a first direction. The two voice coils have a first side close to each other and a second side away from each other. The magnetic circuit assembly is located between the two diaphragms. Under the action of magnetic force, the two voice coils can oscillate along an axis extending in a third direction. In a second direction, the voice coil has the first side and the second side located on both sides of the rotation axis of the voice coil. The two transmission mechanisms are located on both sides of the two voice coils along the first direction and can convert the rotary motion of the voice coil into linear motion along the first direction of the diaphragm. The two transmission mechanisms are connected to the first side and the second side of the two voice coils respectively and drive the two diaphragms to vibrate in opposite directions along the first direction, so that the two diaphragms have a vibration trend of synchronously protruding outward or synchronously sinking inward.

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