Planar loudspeaker composite vibrating diaphragm of and earphone loudspeaker with same

Abstract

The invention relates to a planar loudspeaker composite vibrating diaphragm and an earphone loudspeaker with the same. A first sub-coil formed by wiring first conductors regularly is arranged on a first surface of the vibrating diaphragm, a second sub-coil formed by wiring second conductors regularly is arranged on a second surface of the vibrating diaphragm, the first sub-coil and the second sub-coil are connected serially, at least parts of projections of the first sub-coil and the second sub-coil on the plane of the vibrating diaphragm are overlapped, and directions of current of the overlapped parts of the first sub-coil and the second sub-coil are the same. The headset loudspeaker comprises the vibrating diaphragm and permanent magnets oppositely arranged at the positions of the coils on the vibrating diaphragm. The planar loudspeaker composite vibrating diaphragm has the advantages that the planar loudspeaker composite vibrating diaphragm of the composite structure is formed by serially connecting a plurality of coils, one coil is made of gold or platinum with good malleability, the other coil is made of other conventional metal materials, quality of the whole coils is controlled by controlling lengths and areas of the two coils, sound characteristics of the loudspeaker are controlled, and low-frequency response, high-frequency response and transient are more balanced.

Description

technical field [0001] The invention relates to the technical field of loudspeakers, in particular to a composite diaphragm of a flat-panel loudspeaker and an earphone speaker with the diaphragm. Background technique [0002] Flat-panel earphones combine the advantages of both dynamic earphones and electrostatic earphones. Compared with electrostatic earphones, they have better performance in low frequency and are stronger than dynamic earphones in high frequency. The structure of the core transducer is usually a plurality of strip permanent magnets arranged side by side on the yoke, and a diaphragm is arranged parallel to the magnetic pole faces of these permanent magnets, and the position on the diaphragm opposite to the permanent magnet Coils are provided. The current flowing inside the coil is perpendicular to the magnetic field generated by the permanent magnet, so that by passing an alternating current in the coil, the coil generates a force that obeys Faraday's law. ...

AI Technical Summary

Problems solved by technology

[0005] First of all, the use of gold as the material of the diaphragm coil mainly uses its good ductility to achieve a very thin thickness, so it is very uneconomical to improve the quality by increasing the thickness of the gold coil

[0006] Secondly, in the research and development process of the earphones, the final tuning style always depends on the actual listening of the human ear, which means that to master the ideal thickness or ideal thickness range of the gold coil, it is necessary to produce a large number of diaphragms with different coil thicknesses. This not only puts forward very high requirements on the manufacturing process of gold coils, but also the research and development costs and research and development cycle are too long, which is difficult for enterprises to afford.

Therefore, it is also very difficult to control the sound characteristics by controlling the thickness of the coil

[0007] Not only that, the speaker of this flat-panel earphone works in a high-order vibration mode state, unlike the diaphragm of a traditional dynamic speaker that basically works in a piston vibration state, if and only when the diaphragm reaches the ideal of irrelevant vibration everywhere In the best state, the performance of the flat-panel loudspeaker can reach the best; in practical applications, the driver instigates the thin plate to perform bending resonance, which only meets the requirements of the theoretical assumption to a certain extent, and the result of bending resonance will cause the sound pressure frequency response curve to fluctuate greatly

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