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Vibrating diaphragm for ultra-wideband loudspeaker and loudspeaker using vibrating diaphragm

A loudspeaker and ultra-wideband technology, which is applied in the field of micro-speakers, can solve the problems of high low-frequency cut-off frequency, difficulty in realizing high-definition voice communication, low high-frequency cut-off frequency, etc., and achieve the effect of widening high and low frequency bandwidth, widening bandwidth, and widening high frequency bandwidth

Active Publication Date: 2018-04-20
XIAMEN GREAT SOUND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a vibrating membrane and a loudspeaker for an ultra-wideband speaker, aiming at improving the existing diaphragm structure with low high-frequency cut-off frequency and high low-frequency cut-off frequency, which makes it difficult to realize high-definition voice communication

Method used

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  • Vibrating diaphragm for ultra-wideband loudspeaker and loudspeaker using vibrating diaphragm
  • Vibrating diaphragm for ultra-wideband loudspeaker and loudspeaker using vibrating diaphragm
  • Vibrating diaphragm for ultra-wideband loudspeaker and loudspeaker using vibrating diaphragm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of double-sided tape used for ultra-wideband speaker diaphragm provided in this embodiment is prepared according to the following steps:

[0029] (1) Prepare the following raw materials:

[0030] Monomer: 53 parts of isooctyl acrylate, 13 parts of butyl acrylate, 5 parts of isobutyl methacrylate and 3 parts of acrylic acid;

[0031] Tackifying resin: 26 parts of modified rosin resins;

[0032] Initiator: 0.5 parts of azobisisobutyronitrile;

[0033] Crosslinking agent: 0.2 parts of aluminum triacetylacetonate;

[0034] Organic solvent: 90 parts of toluene;

[0035] S1, take 1 / 3 of the monomer, 1 / 3 of the initiator and 1 / 3 of the organic solvent and stir, heat up to 75°C for reaction to obtain the first reactant;

[0036] S2, drop the mixed solution in the first reactant, the mixed solution includes the remaining monomer, 1 / 3 of the organic solvent and 1 / 3 of the initiator, add the remaining initiator after the dropwise addition, keep the temperature for 1.5h,...

Embodiment 2

[0039] A kind of double-sided tape used for ultra-wideband speaker diaphragm provided in this embodiment is prepared according to the following steps:

[0040] (1) Prepare the following raw materials:

[0041] Monomer: 54 parts of isooctyl acrylate, 12 parts of butyl acrylate, 4 parts of isobutyl methacrylate and 4 parts of acrylic acid;

[0042] Tackifying resin: 25 parts of modified rosin resins;

[0043] Initiator: 0.3 parts of azobisisobutyronitrile;

[0044] Crosslinking agent: 0.1 part of aluminum triacetylacetonate;

[0045] Organic solvent: 81 parts of toluene;

[0046] S1, take 1 / 3 of the monomer, 1 / 3 of the initiator and 1 / 3 of the organic solvent and stir, heat up to 80°C for reaction to obtain the first reactant;

[0047] S2, drop the mixed solution in the first reactant, the mixed solution includes the remaining monomer, 1 / 3 of the organic solvent and 1 / 3 of the initiator, add the remaining initiator after the dropwise addition, keep the temperature for 2h, an...

Embodiment 3

[0050] A kind of double-sided tape used for ultra-wideband speaker diaphragm provided in this embodiment is prepared according to the following steps:

[0051] (1) Prepare the following raw materials:

[0052] Monomer: 50 parts of isooctyl acrylate, 15 parts of butyl acrylate, 2 parts of isobutyl methacrylate and 6 parts of acrylic acid;

[0053] Tackifying resin: 28 parts of modified rosin resins;

[0054] Initiator: 0.1 parts of azobisisobutyronitrile;

[0055] Crosslinking agent: 0.05 parts of aluminum triacetylacetonate;

[0056] Organic solvent: 90 parts of toluene;

[0057] Modified components: 0.3 parts of modified carbon nanotubes;

[0058]Catalyst: 0.08 part of Y2O3, Nd2O3 and Na-X molecular sieve with a mass ratio of 1:1:0.3.

[0059] S1, take 1 / 3 of the monomer, 1 / 3 of the initiator, 1 / 3 of the organic solvent and 1 / 2 of the catalyst and stir, and heat up to 80°C for reaction to obtain the first reactant;

[0060] S2, drop the mixed solution in the first react...

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Abstract

The invention provides a vibrating diaphragm for an ultra-wideband loudspeaker. The vibrating diaphragm comprises a base layer made of a composite material; the vibrating diaphragm is divided into a spherical top, a folding ring and a suspension edge from the middle to the edge; a middle sticker is attached at the spherical top; the composite material comprises a glue layer and first constraint layers arranged on the two sides of the glue layer; and the glue layer is made of double-sided glue; the double-sided glue comprises, by weight, a monomer, 22-28 parts of tackifying resin, 80-90 parts of organic solvent, 0.1-0.5 part of initiator and 0.05-0.4 part of cross-linking agent, wherein the monomer comprises, by weight, 50-60 parts of iso-octyl acrylate, 10-15 parts of butyl acrylate, 2-5 parts of isobutyl methacrylate and 2-6 parts of acrylic acid. According to the vibrating diaphragm for the ultra-wideband loudspeaker, the base layer made of the composite material is adopted, and thefirst constraint layers with good rigidity are combined with the improvement of the formula of the double-sided glue, so that the whole vibrating diaphragm has relatively good rigidity, and the high frequency bandwidth of the vibrating diaphragm is effectively expanded.

Description

technical field [0001] The invention relates to the technical field of micro-speakers, in particular to a diaphragm for an ultra-wideband speaker and a speaker thereof. Background technique [0002] A speaker is a device that can convert electrical energy into sound energy, and is widely used in mobile terminals such as mobile phones, computers, and portable audio equipment. The performance of the loudspeaker directly affects the sound output effect of the mobile terminal device matched with it. The development of 4G network is not only high-efficiency data services, but also can provide high-quality audio and video calls through VoLTE technology, which in turn requires electro-acoustic devices to have a larger bandwidth to meet the needs of high-definition voice communications. [0003] In order to realize high-definition voice communication, how to make the diaphragm have the characteristics of high sensitivity, high power and high sound quality, so as to cover a wide fre...

Claims

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Application Information

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IPC IPC(8): H04R9/06H04R9/02
CPCH04R9/02H04R9/06H04R2400/11
Inventor 吴振兴
Owner XIAMEN GREAT SOUND TECH
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