Precision mechanical balance arm electroacoustic conversion device

Abstract

The invention belongs to the field of speakers, and particularly relates to a precision mechanical balance arm electroacoustic conversion device. The device comprises a front cover, a rear cover, a binding post, magnetic steel, a coil, a bracket, a diaphragm and a mechanical balance arm, wherein a vibration rod is arranged at one end of the balance arm, the vibration rod is connected to the diaphragm, a supporting point is arranged on the pivot point of the balance arm, and the balance arm contacts the magnetic steel through the supporting point. The scheme of the invention has the beneficialeffects that the energy conversion loss of the device system can be reduced, the structural aging can be eliminated, the service life can be extended, the long-term effective and perfect electroacoustic conversion output can be achieved, a frequency response curve of the conversion device can be directly improved, the output sound quality of the conversion device can be better improved, and the service life of the device can also be greatly prolonged.

Description

technical field [0001] The invention belongs to the field of loudspeakers, in particular to an electroacoustic conversion device of a precision mechanical balance arm. Background technique [0002] Traditional speakers are mainly divided into dynamic speakers, piezoelectric speakers and electrostatic speakers according to their driving methods. Dynamic speakers mainly use the interaction of magnetic field, current and force at right angles to control the piston-type repetitive movement of the diaphragm. Because the volume cannot be reduced, it cannot meet the needs of future products for thinner and lighter products. Piezoelectric speakers use the piezoelectric effect. When an electric field is applied to the piezoelectric material, the piezoelectric material will be deformed, and then the diaphragm will be pushed to produce sound. However, the resonance frequency required by the piezoelectric material is high and the bandwidth used is insufficient. Therefore, the applicabl...

AI Technical Summary

Problems solved by technology

However, the structural strength of the existing electrostatic loudspeaker is insufficient, resulting in unstable distance between the static film and the electrode plate, resulting in large sound pressure variability and poor sound effect

Moreover, the practical products of speakers and receivers on the market are relatively simple in function, and the sound quality is poor and easy to be distorted, prone to signal leakage and serious interference, poor anti-vibration ability, unsatisfactory service life cycle, and relatively limited use environment. Etc. Therefore, the invention of this replacement device is a product to meet the use of multiple environments and multiple fields.

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