Sound production device and electronic device

Through dual-sided radiation design and magnetic circuit optimization, the problems of high-frequency performance and space occupation in ultra-thin miniature speakers have been solved, realizing a lightweight and efficient speaker that improves the overall loudness and sound effect.

CN122138099APending Publication Date: 2026-06-02GOERTEK INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GOERTEK INC
Filing Date
2026-02-04
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing miniature loudspeakers struggle to balance high-frequency performance and overall space utilization in ultra-thin designs, and the reduction in the magnetic circuit system leads to a decrease in the BL value, affecting the sound output.

Method used

The design employs a double-sided radiation structure. Two sets of vibration components and magnetic circuit components are set inside the housing, with the first and second vibration components positioned opposite each other and spaced apart along the first direction. The magnetic circuit components are located on both sides of the vibration system. The magnetic field drives the voice coil to vibrate, and the sound waves are radiated through the sound outlet of the housing. The magnetic guide plate structure is eliminated to increase the magnet volume and improve the BL value.

Benefits of technology

The design achieves a slim and lightweight sound-generating device, increases the radiation area and sound performance, improves the overall loudness, and meets the requirements for a slim and lightweight end product.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a sound-generating device and an electronic device, relating to the field of electroacoustic transduction technology. The sound-generating device comprises a first vibration component and a second vibration component that are opposite to each other along a first direction and spaced apart to form a front acoustic cavity. The outer casing has a sound outlet hole communicating with the front acoustic cavity. A first magnetic circuit component and a second magnetic circuit component of the magnetic circuit system are located on opposite sides of the vibration system along the first direction. The first magnetic circuit component includes three first magnets, and the second magnetic circuit component includes three second magnets. All three first magnets and three second magnets are magnetized along the first direction. Adjacent first magnets are magnetized in opposite directions, as are adjacent second magnets. The magnetization directions of the first magnets and second magnets opposite to each other along the first direction are also opposite. This invention not only achieves bi-directional radiation, improving the sound-generating performance and increasing the overall loudness of the device, but also enables a thin and light design, meeting the thin and light design requirements of terminal products.
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