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Electrostatic speaker diaphragm and electrostatic speaker

A technology of electrostatic speaker and membrane layer, applied in electrostatic transducer speaker, flat diaphragm, polymer material diaphragm, etc., can solve the problem of low sensitivity, and achieve the effect of improving sensitivity and reducing the quality of diaphragm

Active Publication Date: 2021-01-29
HEAD DIRECT KUNSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low sensitivity caused by the large quality of the vibration system in the prior art by proposing an electrostatic speaker diaphragm and an electrostatic speaker against the shortcomings of the prior art

Method used

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  • Electrostatic speaker diaphragm and electrostatic speaker
  • Electrostatic speaker diaphragm and electrostatic speaker
  • Electrostatic speaker diaphragm and electrostatic speaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] like figure 1 As shown, the embodiment of the present invention provides an electrostatic speaker diaphragm 100, which includes a diaphragm support layer 110 and conductive layers 120 located on both sides of the diaphragm support layer.

[0019] The diaphragm supporting layer 110 is a single-layer thermoplastic elastic polyester film layer. The elastic polyester film layer is a polymer of dibasic acid and dibasic alcohol and a copolymer of aliphatic polyester. The dibasic acid is selected from one or more of isophthalic acid, terephthalic acid, biphenyl dicarboxylic acid and naphthalene dicarboxylic acid, and the dibasic alcohol is selected from ethylene glycol, propylene glycol, butanediol, pentanediol, One or more of hexanediol. The degree of polymerization of the polymer of dibasic acid and dibasic alcohol is greater than or equal to 2, and the mass percentage is 30%-65%. The molecular weight of aliphatic polyester is 600-6000. The Young's modulus of the thermop...

Embodiment 2

[0022] like figure 2 As shown, the embodiment of the present invention provides an electrostatic speaker diaphragm 200, which includes a diaphragm support layer 210 and conductive layers 220 located on both sides of the diaphragm support layer.

[0023] The diaphragm support layer 210 is a composite layer structure. The composite diaphragm support layer is composed of at least two thermoplastic elastic polyester film layers 211 and an adhesive layer 212 between the elastic polyester film layers. The elastic polyester film layer is a polymer of dibasic acid and dibasic alcohol and a copolymer of aliphatic polyester. The dibasic acid is selected from one or more of isophthalic acid, terephthalic acid, biphenyl dicarboxylic acid and naphthalene dicarboxylic acid, and the dibasic alcohol is selected from ethylene glycol, propylene glycol, butanediol, pentanediol, One or more of hexanediol. The degree of polymerization of the polymer of dibasic acid and dibasic alcohol is great...

Embodiment 3

[0026] like image 3 As shown, the embodiment of the present invention provides an electrostatic speaker 300 , which includes two electrode plates 310 and a diaphragm 320 , and the diaphragm 320 is sandwiched between the two electrode plates 310 . The audio signal output by the power amplifier is boosted 100-200 times by the step-up transformer, and then input to two electrode plates 310, and injected with a 3KV-5KV high-voltage diaphragm 320 to generate vibration and sound between the electrode plates 310.

[0027] The diaphragm 320 includes a diaphragm support layer and conductive layers located on both sides of the diaphragm support layer. The supporting layer of the diaphragm is a single-layer thermoplastic elastic polyester film layer, or a composite layer structure. The composite layer diaphragm support layer is composed of at least two thermoplastic elastic polyester film layers, and an adhesive layer between the elastic polyester film layers. The elastic polyester fi...

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Abstract

The invention provides an electrostatic loudspeaker diaphragm and an electrostatic loudspeaker, the diaphragm comprises a diaphragm support layer and conductive layers located at two sides of the diaphragm support layer, and the conductive layers are nanoparticle conductive layers; wherein the nano-particles comprise metal nano-particles or carbon nano-particles; the nanoparticles are arranged inan electrode pattern; the metal nano-particles comprise at least one of silver, gold, nickel, copper and zinc; the carbon nano-particles comprise at least one of carbon nanotubes, carbon nanospheres and carbon nanowires; the conductive layers are made of the nano conducting particles, so that the mass of the diaphragm can be reduced, and the sensitivity of the diaphragm is improved.

Description

technical field [0001] The invention relates to the field of audio digital-to-analog conversion, in particular to an electrostatic loudspeaker diaphragm and an electrostatic loudspeaker. Background technique [0002] With the improvement of high power, waterproof and high sound quality requirements, the overall performance of the speaker diaphragm with plastic film layer, thermoplastic polyurethane elastomer and damping film composite structure is poor, which is likely to cause poor hearing. Due to the relatively low elastic modulus or hardness of the diaphragm made of silicone rubber, when meeting the same F 0 (Resonant frequency) requirements, the thickness of the diaphragm needs to be increased, resulting in a smaller margin in the vibration space, and the mass of the vibration system is heavier, resulting in lower sensitivity. [0003] Secondly, the vibration film of the existing electrostatic speaker is coated with a metal conductive structure by spin coating, spray co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R19/02H04R7/04H04R7/10
CPCH04R7/04H04R7/10H04R19/02H04R2307/023H04R2307/025H04R2307/027
Inventor 边仿
Owner HEAD DIRECT KUNSHAN CO LTD