US 12,627,931 B2Granted

Speaker

AssigneeChangzhou Amt Co., Ltd

InventorsZhaoyang He, Lei Yang

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Abstract

The present application provides a speaker, which comprises a housing as well as a magnetic circuit system and a vibration system arranged the housing, the vibration system comprises a planar first voice coil which can generate mechanical motion under the action of a magnetic field of the magnetic circuit system, a planar first vibration diaphragm driven by the first voice coil, and the first voice coil is arranged on the first vibration diaphragm; the magnetic circuit system comprises a plurality of magnets, a gap is formed between the magnets, and at least a portion of the first voice coil corresponds to the gap between the magnets. The present speaker is different from a conventional moving-coil type speaker, and the speaker can be made smaller than a conventional moving-coil type speaker and with respect to high frequency performance, the speaker has higher sound pressure and a better bandwidth.

Claims9

Dependent claims

A speaker comprising a housing, and a magnetic circuit system and a vibration system arranged in the housing, wherein the vibration system comprises a planar first voice coil capable of generating mechanical motion under the action of a magnetic field of the magnetic circuit system, and a planar first vibration diaphragm driven by the first voice coil, wherein the first voice coil is arranged on the first vibration diaphragm, and the magnetic circuit system comprises a plurality of magnets;

a gap is formed between the magnets, at least part of the first voice coil corresponds to the gap between the magnets, the first voice coil does not protrude into the gap between the magnets;
the magnetic circuit system comprises a first annular magnet, a second annular magnet surrounding the first annular magnet, and a third annular magnet surrounding the second annular magnet;
the vibration system comprises a second voice coil and a second vibration diaphragm connected to the second voice coil and driven by the second voice coil, the first voice coil corresponds to a gap between the first annular magnet and the second annular magnet, and the second voice coil corresponds to a gap between the second annular magnet and the third annular magnet.

Dependencies are inferred from the claim text.