Loudspeaker and electronic device

Abstract

This application provides a speaker and an electronic device. The speaker includes a magnetic circuit assembly, a circuit board, an adhesive layer, a diaphragm assembly, and a voice coil. The diaphragm assembly is fastened to the magnetic circuit assembly, the diaphragm assembly and the magnetic circuit assembly enclose at least a part of an inner cavity of the speaker, the voice coil is located in the inner cavity of the speaker, one end of the voice coil is fastened to the diaphragm assembly, and the other end of the voice coil is located in the magnetic circuit assembly. The circuit board is fastened to the magnetic circuit assembly through the adhesive layer, at least a part of the circuit board and at least a part of the adhesive layer are located between the magnetic circuit assembly and the diaphragm assembly, and the circuit board is electrically connected to the voice coil. The adhesive layer is provided with a first rear venting channel, and the inner cavity of the speaker communicates with the exterior of the speaker through the first rear venting channel. The first rear venting channel can balance air pressure inside the speaker and air pressure outside the speaker. This prevents the diaphragm assembly from being deformed or cracked, and improves reliability of the speaker.

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