TW552822B - Damper for speaker - Google Patents

Abstract

The damper for speaker is manufactured by impregnating (2) impregnant resulting from mixing a neutralized material between phenol resin and alkali soluble high polymer with latex used for protective colloid to woven cloth (1) of natural or synthetic fibers, drying (3) the impregnated cloth by hot air or the like, and applying hot pressing (4) and die removal processing (5) to the resulting cloth. The damper can be adjusted to have desired flexibility, manufactured as a softer damper with less fatigue, excellent high temperature and high humidity resistance, and excellent sound quality for speakers.

Description

厶 〇 厶 丄 V. Description of the Invention (1) Field of the Invention The present invention relates to a supporting cry device. Vibration reduction for speakers with σ ° spoon vibration system

C: \ 2D-CODE \ 9]-] 〇 \ 9] 1i6〇〇8.ptd Page 4 552822 V. Description of the invention (2) 4) The aldehyde resin is difficult to mix with ordinary latex, in order to overcome these shortcomings' Anti-age acid: resin mixed with soft habit to impregnate non-woven fabrics has been proposed (Japanese patent wooden man door latex 50- 1 1 74 1 1). However, if ordinary latex is to be mixed with phenolic resin, it is difficult to perform any soil or bidding due to the aggregation and hardening of the phenolic resin and the latex as the solvent. Let's do it ... If the acid resin and latex are mixed, suppose that even if they can be mixed, the latex will still have the desired effect. Furthermore, it will be mixed, [5], and cannot be made into an uneven-, For this reason, the holes in which the set-hardened latex is mixed make the adhesion worse, and the latex-set latex will block the fabric. In view of this, it is desirable to reduce the sound quality of the ear. To make a softer speaker, adjust the speaker to the desired softness, make a difference, and make a speaker with good sound quality = easy fatigue, excellent high temperature and humidity resistance, etc. The present inventors and others are in the process of achieving it. As a result, Yu Yu completed the purpose of the present invention, and accumulated various research inventions. That is, the patent-type vibration damper of the present application is characterized in that the invention is a speaker for phenolic resin. With woven fabrics that are soluble in natural or synthetic fibers, the solution of latex is mixed with a neutralizer of 177 as a protective body. After ordering, drying, and heating and pressing to form a shock absorber for loudspeakers as defined in item 2 of the present patent application, its & , 552822

552822 V. Description of the invention (4) __ As the vibration damper for loudspeakers of the present invention, natural fibers such as cotton fibers and silk, and woven fabrics are used, which can be used for vitamins, polyacetate fibers, and vinegar (arannde). Tun fiber, carbon fiber, titanium fiber, and other friends I :, non-crystalline fiber: woven fabrics. Rich tincture and inorganic synthetic fibers can be used as a solution to make the fabric impregnated with cationic fat and neutralized with an alkali-soluble polymer. X 'as the milk of this liquid = For example: Metho, ethanol, isopropanol;: Do not limit, can be listed among or these and water, acetone, fatty lower alcohols and esters of this ester Mixed liquid. As the ketones and acetic acid of methyl ethyl acetate, etc., as the present invention > human-known, general-purpose laminates; acid resins ' Preparation of bismuth tree known as cosol-type phenolic resin (resol) and the like as protection: 5: ： It is used to test the soluble polymer in the special polymer. ': X propyl =: tree moon: the combined use of latex Emulsifier is used, because ί = Ϊ 酸 Ϊ soluble resin instead of low-molecular-weight ingredients, so the monomers that make up the latex components are different from each other in emulsion polymerization, for the sake of :::! Resin mixing stability Good performance, and excellent adhesion, that is, Yu Chang Chang type 1 latex (Japanese Patent Laid-Open No. 9-31,055). On the occasion of emulsification polymerization, as the following: to make the early body of the gift gel t knife using sodium lauryl sulfate; 5 22 = low knife, a ceremonial agent, is undecane & S under sodium Poly (ethylene oxide) benzyl ether sulfur

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Dlrl Page 7 552822 V. Description of the invention (5) Surfactants such as sodium, polyethylene glycol alkyl esters or ethers, etc. However, the stability of the latex of Baizhi's etiquette with various solvents and resins is stable. It is not that when the latex is dried, the emulsifier may hinder the film-forming property of the latex particles, or the free emulsifier may migrate to the surface after film formation, and hinder the adhesion to various materials, which is the problem. Non-soap type latex, as a protective colloid to replace the emulsifier, is a neutralizer using an alkali-soluble polymer. This point is different from the conventional one, and the conventional latex is not used. question. As the latex using the alkali-soluble polymer neutralizer as the protective colloid used in the present invention, that is, the main component of the non-soap type latex, it is a copolymer of styrene, butadiene, acrylonitrile, and butadiene. Rubber, latex such as plastic, polybutadiene, etc., resin latex such as polyethylene, acrylate, methacrylate, vinyl chloride, etc. Also, as the soluble polymer, for example, monomers of ethylenically unsaturated carboxylic acids such as acrylic acid, fluorenyl acrylic acid, butenoic acid, fumaric acid, maleic acid, and succinic acid, etc. Polymers or copolymers of ethylenically unsaturated carboxylic acids with each other 'or other ethylenically unsaturated monomers copolymerizable with ethylenically unsaturated carboxylic acids, for example, with ethyl acrylate, ethyl ethyl acrylate, ethyl acrylate Esters, ethyl methacrylate, propyl acrylate, propyl methacrylate, 2-;): empty ethyl acrylic acid, 2-nicotyl ethyl acrylic acid vinegar, styrene, α- Copolymers of fluorene styrene, vinyl benzene, acrylonitrile, methacrylonitrile, methacrylamide, methacrylamide, vinyl acetate, etc., used in ethylenically unsaturated carboxylic acids and acrylates or methacrylic acid In the case of a copolymer made of other ethylenically unsaturated monomers such as alcohol, the copolymerization is 5: 9 5 ~

liHIH C: \ 2D-CODE \ 9MO \ 9】 116008.ptd Page 8 552822 V. Description of the invention (6) 8 0: 2 0 degree. There is no specific method for polymerizing the above-mentioned monomers. For example, solution polymerization, block polymerization, and emulsification are appropriately known. The molecular weight of the soluble dioxin j I + and the like used in the present invention is a suitable average value as the weight-average molecular weight A77. The range of L 0 0 0 ~ 2 0,0 0 0 in the range is used as the test amine, ethylamine, propylamine, and N N-methyl formaldehyde for the neutralization of soluble polymers. Methyl ammonia, caustic soda, caustic :: none;: base: = neutralize all over the ground, for example, it can be 50% neutralization to complete, neutralization of soluble polymer in the glue: suitable: to: It is preferred that: 100 parts by weight of the gum neutralized substance (solid content) is 5 to 10 denier, and 50 to 50 parts by weight is preferred. Xia Lishang 'and the concentration (solid content) of the phenol resin in the 10 immersion solution is i ~? Appropriately, the concentration (solid content) of the gums neutralized with the alkali-soluble polymer is suitable for the apricot and 70% by weight, and the milk of the two beans is 5-50% by weight, and the latter is 5-5. The degree by weight is Tian Jia. The ruler is. . If the concentration of the phenolic resin in the impregnating solution is 1% or less, the shape of the device is difficult. On the other hand, if the concentration is 70% or more, the μ-Vibration damping is too high, and it is difficult to impregnate the woven fabric. In addition, the viscosity of the nocturnal limb 1 〇 / nr, ^ ^ ^ If the concentration of the latex is 1/0 U, fatigue resistance and environmental resistance cannot be improved, and if the degree exceeds 70%, the The occasion is the same / Chen Gao, it will be difficult to impregnate the fabric, and it will hinder ^ viscosity: said, causing the speaker's amplitude action to deteriorate ... resulting in a drop in adhesion: =.

Page 9 V. Description of the invention (7) X ′ is restricted restrictively 鲛. Generally, it is advisable to increase the (weight ratio) range of the phenolic resin shock absorber. According to the present invention, if the two molecules are neutralized and the condition of the fabric is compared with the vibration damper, the ratio is not specifically and appropriately implemented (conducting examples), and it is not necessary to arbitrarily be a vibrator. In some cases, it is necessary to be more flexible or increase the amount of the solvent. It is characterized by the use of alkali-soluble mixtures. There are known methods for degree and heat-compression. It can be 1: 0 · 1 ~ 1: 3 (weight ratio) depending on the required speaker, and the degree is appropriate, which requires a harder reduction or a reduction in the amount of solvent. On the contrary, the reduction of the amount of phenolic resin is as described above. It is based on the amount of mixing of latex using a phenolic resin as a protective colloid, the drying method, the shape of the drying process, the molding method, etc., which are different from conventional ones. The present invention can be described in more detail by following the examples below to disclose representative embodiments. However, these are merely examples for illustration, and the present invention is not limited to these examples, and it goes without saying. (Composition of impregnating solution) Water-soluble phenolic resin (solid content: 50%): 20 parts (parts by weight, the same applies hereinafter) Styrene butadiene-based non-soap latex (manufactured by ZEON (Japan), Nippol SX1100 series) , Solid content 45%): 20 parts methanol: 60 parts (shaping of shock absorber)

C: \ 2D-CODE \ 91-10 \ 91116008.ptd Page 10 552822 V. Description of the invention (8) Para-aramide fiber (made by Teijin Co., Ltd., Conex C0 20 53). The impregnation solution is impregnated, dried with hot air, and then heated and pressed at 65 ° C for 5 seconds to form a shock absorber. For comparison, only phenolic resin was impregnated with phenolic resin, and heated and pressed under the same conditions to form a shock absorber (comparative product). (Comparison of performance) ① Operation at room temperature 'f The shock absorber of the present invention and a comparative product are assembled into a speaker with a diameter of approximately 16 cm, = each speaker is continuously operated at 40 W at room temperature for j days, and the test can be performed. The minimum resonance frequency number before and after and the output sound pressure were measured to compare the performance of driving. The results are shown in Table 1. For test products, 81 before the test, the frequency of g after the frequency 3 (Hz) difference η n-) Q _ 9 Ί η Sr output tone before the test 1 g (dB) difference after the test 83TiT ^ —8 2TTF ^ · 63. 91-^ 01_ __71.32 1 / · ^ 〇 / < 丄 • 丄 x -16.63, -20.4% -11.9, -14.2% 87.76 87.42 87. 111 87.48 87.31 86.98 -〇28, -〇 · 〇32% -0.09, -0.013% -0 · 13, -〇 · 〇ΐ5% -11.06; -13.4% 87.14 87.02 -0.12, -0.014% ②High temperature operation

80. . ί i: The lowest resonance after the above-mentioned speakers are assembled with the shock absorber and the comparative product: it is operated continuously at 20W for 96 hours. The results are counted; 2 sound pressure is measured to perform the performance t Table 2 Dishes are not in the table

552822 V. Description of the invention (9) The lowest resonance frequency SP number (Hz) of the test product 1% (dB) Before test and after test Poor before and after test Before test and after test, the difference is 52.48 -26.69, -33.7% 87.65 8 7.43 -0.22. -0.025% 81.87 55.30 -26.57; -32.5% 87.86 8 7.37 -0.49, -0.056% The present invention 81.81 68.30 -13.51, -16.5% 86.99 87.08 +0.09, 0.01% 84.90 70.00 -14.9, -17.6% 87.24 87.26 +0.02, 0.002% ③ High-temperature and high-humidity operation The above-mentioned speakers assembled by using the shock absorber of the present invention and a comparative product are operated continuously at 20 ° C and 95% at a temperature of 60 ° C and 95 ° C. 9 At 6 hours, the minimum number of resonance frequencies before and after the test and the output sound pressure were measured to perform a performance comparison test. The results are shown in Table 3. Table 3 Minimum resonance frequency (Hz) of the test product 11 g (dB) Pre-test post-test post-test post-test post-test post-test difference 84.27 51.5 -32.77, -38 · 9% 87.10 86.72 -0.38, -0.44% 82.90 50.64 -32.26, -38 · 9% 87.15 86.80-0.35, -0.40% The present invention 84.98 66.76 -18.22, -21.4% 87.12 87.14 +0.02, 0.02% 85.08 65.67 -19.41, -22.8% 87.06 87.08 +0.02, 0.02% The present invention Compared with the conventional product, the reduction of the minimum resonance frequency after the test is greatly improved, and the change of the output sound before and after the test is smaller than that of the conventional product. In addition, the change in performance, under the severe conditions of high-temperature environment and high-temperature and high-humidity environment, the performance gap with conventional products has widened. This shows that the shock absorber of the present invention is superior to conventional products in terms of environmental resistance and is less prone to fatigue. Figure 2 shows the decrease rate of the lowest resonance frequency (average of n = 2) from the above data.

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It is not easy to occur. 5. Description of the invention (10) The bar graph is used to display, this figure shows that the product of the present invention is more fatigued. EFFECT OF THE INVENTION Compared with the conventional shock absorber which is impregnated with a phenolic resin only, the shock absorber of the present invention has the following characteristics: 1) The shock absorber is less prone to fatigue. The decrease in the minimum frequency after the continuous action test was small. 2) Excellent resistance to high temperature and humidity. Since the surface of the woven fabric is covered with a non-soap type latex component, it has excellent high-humidity properties, and even in high-temperature and high-humidity environments, the number of low-frequency and low-resonance frequencies can be reduced. °° operation, up to 3) can make a softer shock absorber. For the use ratio of the non-soap type latex of Lingjun resin, it is possible to make a soft and hard shock absorber that cannot be manufactured ^, so 4) the sound quality of the speaker is good. Stuck again. By blending non-soap type latex with phenolic resin, the shock absorber becomes better with a linear ^ i ^ + in the eighth of the amplitude 丨 excellent character, and sound quality can be obtained 5) phenolic resin and non-white, good shock absorber . Zhefei County-style gift glue can be freely matched. Fan Jun resin and non-tai n m ^ ^ t-type gift gum can be arbitrarily matched. The solution can be diluted with methanol or water. This impregnating solution is 3 / again. From both uniform and safe, the component number says I

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C: \ 2D-CODE \ 91-10 \ 9in6008.ptd Page 14 552822 Brief Description of Drawings Figure 1 is a schematic diagram showing a speaker of the present invention. Manufacturing method of vibration> 7 of an example Fig. 2 is a bar graph showing the reduction rates of the present invention and a comparative product. The lowest resonance frequency under the Xiangan brothers continued operation) ② high temperature operation (w, two at 0 Shi to temperature, for (40W, 24 hours continuous cropping (20W, 96 hours remote access' 6 small 蚪 continuous action) ③ high temperature high Wet movement B: the lowest connection of a conventional product, the action) 'Emotion ...', A: The reduction rate (vertical coordinate,%) of the product of the present invention and &

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Claims (1)

552822 'Scope of patent application 1 · Do not use a synthetic synthetic fiber as a protective dry before heating 2 · For example, apply for alkali-soluble high-based' styrene vinyl diene and other acid esters, gas ethyl 3 · If you apply for high solubility Other saturates of sulphuric acid 4. For example, application of phenol neutralizers in immersion solution for woven fabrics for phonons, colloidal pressure synthesis of patented molecules • Butadiene rubber and other patented patents are ethylenic The unpatented aldehyde resin is a protective shock absorber. It is characterized by the fact that it is impregnated with natural fiber or milk; == a solution of ^ 〇% formed by neutralization with an alkali-soluble polymer. Its dry surroundings M 1 TS towel 4 4. Loudspeaker shock absorbers, in which tritium is used as the main component of latex for protective colloids, acrylic copolymers, butadiene copolymers, polystyrene, polystyrene, Acrylate, fluorene-based acrylic resin emulsion. The vibration damper for loudspeakers according to item 1, wherein a single polymer of an alkali-unsaturated carboxylic acid, an ethylene-based copolymer, an ethylenically unsaturated carboxylic acid, a copolymer of an acid and a copolymerizable saturated monomer. The vibration damper for loudspeakers according to item 1, wherein the latex (solid content) containing soluble polymer colloids having a wave degree of 1 to 70% by weight is 1 to 70% by weight. C: \ 2D-CODE \ 91-10 \ 9lll6008.ptd Page 16