Sound production device and electronic device

By employing a double-radiating design and an innovative layout of the magnetic circuit system in the speaker, the contradiction between high-frequency performance and thinness in the ultra-thin design of the miniature speaker has been resolved, achieving both thinness and improved high-frequency performance, and enhancing the overall loudness of the unit.

CN122138098APending 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 speakers struggle to balance high-frequency performance and slim design requirements in ultra-thin designs. Furthermore, tweeters typically require housing assembly, resulting in larger module dimensions in the XYZ directions and occupying more space in the overall device.

Method used

The device employs a double-sided radiation sound-generating device design. It forms a front sound cavity by setting first and second vibration components that are opposite to each other and spaced apart in a first direction inside the housing. Magnetic circuit components are set on both sides of the vibration system to drive the voice coil to vibrate, thereby realizing double-sided radiation of sound waves. The sound waves are also radiated through the sound outlet hole of the housing, reducing the thickness of the sound-generating device.

Benefits of technology

The design achieves a slimmer and lighter sound-generating device, increases the radiation area, improves sound performance and overall loudness, and ensures that the absolute difference in frequency response of the vibration components under the same power conditions is less than or equal to 6dB, significantly improving the sound wave superposition effect.

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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 of a vibration system, which are positioned opposite each other along a first direction and spaced apart. A front acoustic cavity is formed between the first and second vibration components. 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. When the first and second vibration components operate under the same power conditions, the absolute difference in frequency response between the first and second diaphragm components is less than or equal to 6 dB. This invention not only achieves double-sided 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 end products.
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