Manufacturing method of power-operated loudspeaker and diaphragm thereof

Abstract

The invention discloses a motor-driven speaker and a vibrating diaphragm provided by the invention which is used in the symmetrical magnetic field and metal coil of the vibrating diaphragm is charged with alternating current. The vibrating diaphragm of the invention comprises an insulation membrane and the metal coil which is distributed on the membrane and adopts pure copper or an alloy mainly containing copper as raw material. The making method of the vibrating diaphragm comprises the steps that: the insulation membrane, the pure copper or the alloy mainly containing copper are first prepared; the pure copper or the copper alloy is processed into the metal coil with the thickness between 0.009 and 0.1mm; the metal coil is fixed with the insulation membrane by a certain winding method. The making method of the invention firstly applies the copper into the vibrating diaphragm as material of the metal coil and due to the excellent conductivity and density of the copper, the excellent sound quality can be provided; additionally, the invention also provides necessary optimum technical parameters such as thickness, density, co-ordination, etc., when the copper is adopted in the making method, thereby breaking the routine thought and overcoming the technical barriers.

Description

【Technical field】 [0001] The invention relates to the field of audio equipment, in particular to an electric loudspeaker, its diaphragm, and a method for manufacturing the diaphragm. 【technical background】 [0002] Dynamic loudspeakers are realized by the use of energized conductors moving in a magnetic field to generate sound waves. The known loudspeaker structure usually uses two layers of high-performance magnetic strips facing each other to form a symmetrical magnetic field, and then a diaphragm is sandwiched between the layers. The diaphragm is provided with a metal coil as the current-carrying conductor. The coil forms a loop when it is energized. When an alternating current passes through the aluminum strip, under the action of the symmetrical magnetic field formed by the two layers of magnetic strips, the coil will drive the entire vibrator. The membrane vibrates up and down and radiates into the air, allowing sound waves to travel to the human ear as sound. [000...

AI Technical Summary

Problems solved by technology

Another important reason for using aluminum strips as coils is that those skilled in the art cannot simply determine the technical measures and parameters that should be taken when other metals are used on the diaphragm, which leads to this limitation.

[0004] However, the conductive performance of the aluminum strip is sometimes unsatisfactory, and due to its specific gravity, it lacks a sense of thickness when driving the diaphragm, which will affect some key indicators of the electric speaker such as impedance and distortion.

Therefore, the existing dynamic loudspeaker still has a large space for technical improvement

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