JPS5890899A - How to assemble the speaker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for assembling a speaker9, and more specifically, the present invention relates to a method for assembling a speaker9, and more specifically, a method for assembling a speaker9 using a reactive two-component adhesive that polymerizes and solidifies through a radical reaction and an adhesive further containing a photosensitizer. Regarding the assembly method of joining each member, more specifically, after applying the adhesive to each member and joining, this part is irradiated with light such as ultraviolet rays to rapidly harden and temporarily fix each member. This creates a state in which it can be moved to the next work process, and then it is completely cured by the radical reaction of the two components.As a result, the assembly work time is extremely shortened. Concerning a robust assembly method.

Speakers used in various types of audio equipment, such as stereos, usually have a structure as shown in Figure 1.As is clear from the drawing, one frame consists of a frame 1, a cone 2, an edge 3, a gasket 4, a voice coil 5, It is formed from a damper 6, a dust cap 7, and other parts thereof, and the respective joints are assembled by bonding with adhesive.

Conventionally, chloroprene adhesives have been widely used as adhesives for the joints. However, this chloroprene-based adhesive has a solid content of only 30-36% by weight and contains a large amount of solvent, so it takes a long time for the solvent to volatilize and develop sufficient adhesive strength. ,
In order to shorten this time, K requires a process such as heating.

Recently, in order to improve the above-mentioned drawbacks, a bonding method that uses a radical reaction and uses a two-component 1111 adhesive that cures at room temperature improves the required physical properties of the adhesive and improves the curing speed. has been proposed (Patent Publication No. 1983-34640), but the present invention further increases the bonding fixing speed without impairing the required adhesive properties by adding a photocuring function to such a bonding method. This is a major improvement.

On the other hand, in the manufacturing method of speakers, a method has been proposed in which the voice coil/damper and voice coil/cone are bonded together using an ultraviolet curable adhesive that is cured and fixed only by light irradiation (Public Practical Practice). Although it can be applied to parts of the speaker where the surface of the adhesive is hardened and fixed while being exposed due to the structure of the speaker, as in the case mentioned above, it can be applied to most joints. Usually, the adhesive surface is rarely joined when it is exposed.
It is virtually impossible to cure and fix such a part using only light.

The purpose of the present invention is to use an adhesive that has both a hardening function by radical reaction and a hardening function by light irradiation, so that the assembly work time is extremely shortened and the bonding of each member is strong. It is an object of the present invention to provide a method for assembling a nine-speaker that eliminates the drawbacks of the known technology.

In order to achieve the above-mentioned object, the present invention provides a reactive two-component adhesive that is polymerized and solidified by a radical reaction consisting of a liquid containing an organic peroxide and a liquid B containing a curing accelerator. In the method for assembling a speaker by joining and assembling each member of the speaker using the above-described method, either one or both of the liquid A and B contains a photosensitizer, and these liquids A and B
The method is characterized in that the liquids are layered or mixed and applied to each of the members, and then the applied portions are irradiated with light to be firmly bonded.

The present invention will be explained in detail below.

In the present invention, the components forming the speaker are joined as shown in FIG. 1: voice coil 5 and damper 6, damper 6 and frame 1, edge 3 and frame 1, cone 2 and dust cap 7, cone 2 and lead wire This is a connection between each member such as No. 11. In Figure 1, 4 is the gasket)
, Aa) Tag plate, 9 is a magnet, 10 is a brake H with a bow shield P δ. 1. In the reactive two-component adhesive used in the present invention,
Solution A mainly consists of monomers and oligomers such as methacrylic acid ester, and if necessary, soluble polymers and plasticizers are added to this to make a homogeneous solution.
0.00 parts by weight, 0.1 to 10 parts by weight of organic peroxide is added. Specific examples of such organic peroxides include benzoyl peroxide, di-
t-butyl peroxyphthalate, methyl ethyl ketone peroxide, t-butyl hydroperoxide,
Cumene hydroperoxide etc. are used.

First, liquid B is mainly composed of monomers and oligomers such as methacrylic acid ester, and if necessary, soluble polymers or plasticizers are added to this to make a homogeneous solution, and then 100 parts by weight of this solution is added. It is made by adding 0.1 to 5 parts by weight of a curing accelerator.

In the above, the curing accelerator is one that accelerates the polymerization and curing of liquid A, and is composed of a liquid mixture of iron salt and linear polyamines. The molar ratio of the iron salt to the linear polyamine is 1:5 to 1:400.

If the ratio of linear boria and minos is less than 5,000, the adhesive strength will decrease, and if it is more than 400, the curing time will be longer, which is unsuitable. Examples of iron salts for cough include inorganic or organic iron salts, such as anhydrous ferric chloride, ferric nitrate, and iron lactate.

Linear polyamines have the general formula (wherein R1e "% p "3 + "4 are each hydrogen or an alkyl group having 1 to B carbon atoms," is 1 to
It is an integer of 5. ), specifically, ethylenediane, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexane, etc.

The aforementioned curing accelerator may also be a liquid mixture of an iron salt and a cyclic polyamine. In this case, the molar ratio of the iron salt to the cyclic polyamine is 1:1 to 1:200. Annular Bo 1 "°, #ll (1) to the cliff; if the height is small, the adhesive force will be reduced, and if the 200↓ is also large,
It is unsuitable because it takes a long time to harden. .

As mentioned above, examples of the iron salt include inorganic iron salts, specifically, the anhydride group IL is ferric nitrate, iron lactate, and the like.

Cyclic polyamines have the general formula (in the formula, ・r"r,' (1: iL-u each 2
is an integer of ~8, Ω1 and p are each an integer of O~6, "s + " * $ 3 or more, and X is 1 or 2), specifically: is 1°4,7,10-tetraazacyclododecane,
1,5,9゜13-tetraazacyclohexadecane, 1
．． 4,8.11-tetraaza 7 clotet 2 decane, 1,
4,7. to.

13.16--, xaazacyclooctadecane, 1,4
8, I2-tetraazacyclopentadecane and the like.

Furthermore, as the aforementioned curing accelerator, a substance that forms a redox system with an organic peroxide (redox system accelerator) can also be used. Such redox accelerators include, for example, monometallic materials of ζ aldehydes and amines, cobalt naphthenate, globio/plated iron, etc., tertiary amines such as 1' dimethylaniline, NN' dimethyl tolu, idine, triether aphenine, etc. The monomers used in the above-mentioned liquids and liquids B are highly reactive and As the reactive monomers, acrylic acid ester monomers and methacrylic acid ester monomers such as methyl methacrylate, 2-hydroxyethyl methacrylate, and 2-hydroxyglobil methacrylate are used.

As the reactive oligomer, acrylic or methacrylic oligomers such as polyester polyol acrylate, polyester polyol acrylate, and oligoester acrylate are used. Elastomer, 8BR.

Synthetic rubber such as NBR, MuB8, vinyl chloride, PMM
synthetic resins such as aluminum, alkyd resins, etc.

In the present invention, a photosensitizer is added to either one or both of the above-mentioned liquid and liquid B to 100 parts by weight of liquid or liquid B.
．． It is characterized by adding 5 to 5 parts by weight. Examples of the photosensitizer include benzoin, benzoin/methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin/methyl ether, benzoin octyl ether, a-methylbenzoin, α-phenylbenzoin, acetophenone, and benzophenone. Examples include carbonyl compounds, diphenyl sulfide, diphenyl disulfide, ditheocarbame HL (p-sulfur compounds, azo compounds such as azobisisobutyronitrile, hydrazone, and other metal carbonyls and pigments).

The present invention is to assemble a speaker by applying the above-mentioned liquid and B [on top of each other or mixing them together and applying them to each of the above-mentioned members, and then irradiating the applied parts with light to firmly bond them.

To describe the above-mentioned assembly method in more detail, first, the liquid M and liquid B are mixed using an applicator, and then applied to the joint area, and the adherends (members) are bonded or bonded. At this point, the organic peroxide in the liquid B is decomposed by the reaction accelerator in the liquid B, and polymerization proceeds by a normal radical reaction.
In other words, if the exposed portion (surface) of the adhesive 9 is irradiated with light when the adhesive is uncured and still flowing, a radical reaction due to the light will proceed at the same time in the exposed portion. In other words, by adjusting the irradiation energy of light, it is possible to harden the part in seconds), that is, it is possible to reach a temporary fixation state in an extremely short time. Specifically, the radical polymerization by the polymerization initiator as described above is completed, and complete curing and adhesion are achieved.

Also, when applying the adhesive, it is necessary to form a light-receiving part, but for example, for parts such as Dunno (-/frame, edge/frame), it is sufficient for practical use to make a protruding part of the adhesive. It is.

Liquid A and liquid B do not necessarily need to be mixed and discharged.
Exactly the same effect can be obtained even in overcoating of liquid M and liquid B.

Incidentally, in the present invention, the irradiating light can be expanded, for example, light from a light source, and specifically, a mercury lamp, a xenon lamp, a chemical lamp, a metal halide lamp, or the like is used.

The adhesive used in this way has both a radical reaction curing function and a light irradiation curing function, so the time required for assembly work is extremely shortened, and each component can be easily cured. The bond is strongly oriented.

Hereinafter, the present invention will be explained in more detail with reference to Examples.

Example 1 Acrylic acid adduct of bisphenol diglycidyl ether, 45 parts of acrylic acid adduct of phenyl diglycidyl ether, 75 parts of N-vinyl pyrrolid, oligomer ester acrylate (Aronix, manufactured by Toagosei Kagaku Kogyo Co., Ltd.) M-6200) 55 copies, MBR (Nippon Zeon (
5 parts of Nitpol Co., Ltd. II Nitzpol 1041) and 0.3 parts of hydroquinone were mixed with a fist to prepare a homogeneous solution and used as an adhesive paste.

To this adhesive paste 100S, 2 parts of benzoin isobutyl ether and 2 parts of cumene/1 hydrobar oxide were added to prepare an adhesive paste.

On the other hand, anhydrous ferric chloride and 1.4.8.
A 20-2-hydroxyethyl methacrylate solution of a mixture of 11-tetraazacyclonato-2-decane in a molar ratio of 1:2 was prepared, and 5 parts of cough hardening accelerator solution was added to 100 parts of the adhesive base to prepare adhesive B. Adjust the liquid.

Next, use the adhesive liquid M and B to apply a mixture to the voice coil/damper joint of the speaker using an applicator, and immediately apply a high-pressure mercury lamp (12
0W/3) for 5 seconds to form a cured film on the surface. Also, at this point, the voice coil was lifted to 9 and ζ, and the damper did not fall off at all.

Furthermore, when the bonded product was left at room temperature for an hour and the voice coil and damper were peeled off after death, the damper broke and showed sufficient adhesive strength.

Furthermore, similar bonding strength could be obtained for the voice coil/cone by the above bonding operation.

Example 2 50 parts of epoxy acrylate (epoxy ester M-600M manufactured by Kyoeisha Yushi Kagaku Kogyo ■), 50 parts of epoxy acrylate (Epoxy ester 300 manufactured by Kyoeisha Yushi Kagaku Kogyo ■)
20 parts of polyfunctional acrylic monomer (Monocizer 'I'D1582, manufactured by Dainippon Ink and Chemicals)
1 part, 30 parts of urethane acrylate (Corvisan 782, manufactured by Thiokol Co., Ltd.), 30 parts of acrylic monomer (11RO20, manufactured by Thiokol Company), 1 part of 2-hydroxyethyl acrylate, and 70.3 parts of Hyde a-Kino were mixed and stirred to prepare a homogeneous solution. Adhesive paste.

An adhesive solution was prepared by adding 2 parts of benzoin butyl ether and 2 parts of tert-butyl hydroperoxide to 100 parts of this adhesive base.

On the other hand, as a curing accelerator, prepare a ts2-hydroxymethacrylate solution containing a mixture of anhydrous ferric chloride and triethylenetetramine in a molar ratio of 1:1O, and add 100 parts of the curing accelerator solution to 100 parts of the adhesive base. Adhesive B by adding 5 parts
The liquid was adjusted.

Next, using this adhesive solution and Solution B, use an applicator to coat the frame part of the damper/frame joint of the speaker so that the B solution and the Mu solution are just overlapping each other. Did. The adhesive should be applied in an amount such that when the dampers are pasted together, the adhesive protrudes about 2 inches from the outer edge of the damper. Next, attach the damper,
Immediately, the protruding portion was irradiated with light in the same manner as in Example 1 to form a cured film, and then the damper was lifted lightly by hand. No detachment of the damper was observed, and it was possible to obtain the adhesion strength equivalent to temporary fixation. A good friend.

After leaving the bonded product at room temperature for a while, the damper was peeled off and the damper broke down, showing sufficient adhesive strength.

It is also possible to apply the same gluing operation as above to the cone/frame bond to obtain the same temporary bond strength and final bond strength in this case as well.

Examples & Example 1. An adhesive liquid was prepared by adding 2 parts of Erogiluna 200, 2 parts of benzoin isobutyl ether, and 2 parts of cumene hydroperoxide to 100 parts of the same adhesive base.

On the other hand, Example 1. Adhesive paste similar to 11JO part,
Erosil φ2002 parts, Example 1. Adhesive liquid B was prepared by adding 5 parts of the curing accelerator solution shown in .

Next, using the adhesive liquid M and B, use an applicator to mix and apply the mixture onto the cone at the cone/dust cap joint of the speaker so that the adhesive protrudes, and then attach the dust cap. Example 1 below. A cured film is formed by irradiating light in the same manner as above. In this case 4 Example 1. And, as with Z, the final adhesive strength can be obtained through initial temporary fixation with first-formed skin MK.

[Brief explanation of the drawing]

FIG. 1 shows a cross-sectional view of a conventional speaker assembled by the assembly method of the present invention. l...frame, 2...cone, 3...
Edge, 4... Caskerato, 5... Voice coil, 6... Damper, 7... Dust cap, 8
...Top plate, 9...7 magnets, 10
... Plate with pole piece 11 ... Lead wire % Hariyama Ganto Diapondoe and Matsushita Co., Ltd.'
Ytki Sangyo Co., Ltd. - Motachi Kagaku Maou Co., Ltd.')ji-LL'

Claims (6)

[Claims] (1) Each component of the speaker is bonded using a reactive 2mm adhesive that polymerizes and solidifies through a radical reaction, consisting of a liquid containing an organic peroxide and a liquid B containing a curing accelerator. In the method for assembling a speaker, one or both of the liquid and liquid B contains a photosensitizer; 4111. A method for assembling a speaker, which comprises applying liquid B in layers or in a mixture to each of the members, and then irradiating the applied parts with light to firmly bond them. (2) In the assembly method according to claim 1, each member forming the speaker is joined to include a voice coil and a cone, a voice coil and a damper, a damper and a seven-frame, an edge and a frame, a cone and a dust cap, The first is the assembly method, which involves joining each part of the cone and lead wire. (3) In the assembly method described in claim 1, the curing accelerator is a liquid mixture containing iron salt and linear polyamine in a molar ratio of 1=5 to 1:400, and A method for assembling a compound having a general formula of a chain-shaped boria vane. In the formula, each of the hydrogen atoms and the a*R4 represents an alkyl group having 1 to 8 carbon atoms, and n is an integer of 1 to 5. (4) In the assembly method according to claim 1, the curing accelerator is composed of an iron salt and a cyclic boron in a molar ratio of 1:1.
An assembly method in which the cyclic polyamine is a compound having the following general formula. In the formula, ml and m2 are each an integer of 2 to 8,
nl and n2 are each integers from O to 6, and nI+
n* must be 3 or more, and X is 1 or 2. (5) The assembly method according to claim 3 or 4, wherein the iron salt is an inorganic or organic iron salt. (6) The assembly method according to claim 1, wherein the curing accelerator is a substance that forms a redox system with an organic peroxide.