Precision mechanical balance arm electroacoustic conversion device

A technology of precision machinery and electro-acoustic conversion, applied in the field of loudspeakers, can solve problems such as signal leakage, unsatisfactory service life cycle, poor anti-vibration ability, etc., and achieve the effect of reducing energy conversion loss, prolonging service life and eliminating structural aging

CN108449699APending Publication Date: 2018-08-24BESTAR HLDG
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2018-08-24

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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.
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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...

Examples

Embodiment Construction

[0022] Such as figure 1 , figure 2 , image 3 As shown, the precision mechanical balance arm electroacoustic conversion device includes a front cover 8, a rear cover 1, a terminal post 2, a magnetic steel 9, a coil 4, a bracket 6, a diaphragm 7 and a mechanical balance arm 5, and the diaphragm 7 passes through the bracket The outer edge of 6 is fixed in the front cover 8, the bracket 6 provides a support platform for the whole device, the two ends of the mechanical balance arm 5 are fixed on the bracket 6, the magnetic steel 9 is fixed in the pole shoe 3, and the two sides of the pole shoe 3 pass through The fixing hole is fixed on the bracket 6, the coil 4 is a double coil, and the double coil 4 is respectively arranged on both sides of the magnetic steel 9, and the two pole shoes 3 are respectively inserted into the double coil 4, wherein the double coil 4 is a conversion device The heart of the device generates driving force through the magnetic induction effect. The mag...