A magnetic conducting plate assembly, a sound production device and an electronic device

By applying polycrystalline material coatings of varying thicknesses to the magnetic guide plate assembly of the loudspeaker, the problems of insufficient magnetic field constraint and corrosion resistance of the washer were solved, thereby improving the driving force and frequency response of the loudspeaker and achieving a balance between magnetic conductivity and corrosion resistance.

CN122160683BActive Publication Date: 2026-07-21GOERTEK INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GOERTEK INC
Filing Date
2026-04-30
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In the existing technology, the equal thickness design of the washer results in limited magnetic field line constraint ability and uneven distribution of magnetic field lines within the magnetic gap, which affects the acoustic performance of the speaker. At the same time, insufficient or excessive coating thickness will weaken the magnetic permeability and corrosion resistance.

Method used

The soft magnetic metal coating is composed of polycrystalline materials. The thickness of the first coating is 1.2 to 5 times that of the second coating. The second coating is mainly on the top surface to prevent corrosion, and the third coating is on the bottom surface to enhance adhesion. By reasonably controlling the coating thickness and material composition, the distribution of magnetic lines of force and corrosion resistance are optimized.

Benefits of technology

It improves the confinement and corrosion resistance of magnetic lines of force, optimizes the driving force and frequency response characteristics of the loudspeaker, and avoids unnecessary increases in materials and costs, ensuring the integrity of the structure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a magnetic conducting plate assembly, a sound production device and electronic equipment, and relates to the technical field of acoustics. The application discloses a magnetic conducting plate assembly, which comprises a body part, a first plating layer arranged on the peripheral side surface of the body part, and a second plating layer arranged on the top surface of the body part. The first plating layer and the second plating layer are both soft magnetic metal plating layers composed of polycrystalline material. The average thickness of the first plating layer is 1.2-5 times the average thickness of the second plating layer. The magnetic conducting plate assembly aims to solve the technical problem of how to improve the magnetic line constraint capability and corrosion resistance of the magnetic conducting plate assembly while ensuring good magnetic conducting performance.
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