CN202395974U - Loudspeaker based on injection molding technique - Google Patents
Loudspeaker based on injection molding technique Download PDFInfo
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- CN202395974U CN202395974U CN2011202157235U CN201120215723U CN202395974U CN 202395974 U CN202395974 U CN 202395974U CN 2011202157235 U CN2011202157235 U CN 2011202157235U CN 201120215723 U CN201120215723 U CN 201120215723U CN 202395974 U CN202395974 U CN 202395974U
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Abstract
The utility model provides a loudspeaker based on an injection molding technique. The loudspeaker based on the injection molding technique includes an electro-acoustic transducer, a support frame disposed on the electro-acoustic transducer and a drum paper disposed in the top end of the support frame. The drum paper includes a polypropylene foaming layer, and a top face covering layer and a bottom face covering layer arranged on the upper and the lower side of the polypropylene foaming layer respectively. The polypropylene foaming layer is in a flat plate structure and is made of polypropylene and by adopting the injection molding technique. The top face covering layer and the bottom face covering layer are in the flat plate structure and are made of paper, metal slices or braided fabrics respectively. Bonding layers are further arranged between the top face covering layer as well as the bottom face covering layer and the polypropylene foaming layer. The bonding layers are made of anaerobic colloid.
Description
Technical field
The present invention relates to a kind of loud speaker, particularly a kind of loud speaker based on injection-molded technology.
The invention still further relates to a kind of bulging paper of loud speaker, particularly a kind of bulging paper based on injection-molded technology.
Background technology
In traditional handicraft, the bulging paper of loud speaker like taper or plane drum paper (or oscillating plate), all adopts a kind of sandwich sandwich, its intermediate layer cellular sheet materials (honeycomb structure) that adopt more, and its concrete structure is as shown in Figure 1.
In the manufacturing process of traditional taper or plane drum paper, form a honeycomb structure earlier as the intermediate layer, the following subsequently extra play that attaches other above that.Wherein, mostly the material of the honeycomb structure in intermediate layer is paper, and aluminium or synthetic fibers such as aramid fiber etc. need very special devices yet adopt above-mentioned material to make the intermediate layer honeycomb structure.
The honeycomb structure good rigidly that adopts aluminium material to make, in light weight, but its technology very complicacy and fraction defective are high, must adopt the special installation manufacturing.Aramid fiber has fire performance as a kind of synthetic fibers, is prone to then, and the operation yield is high, often use on space product, so aramid fiber is the better selection of manufacturing intermediate layer honeycomb structure, yet it costs an arm and a leg.If adopt paper to make honeycomb structure, very high to the processing requirements of the paper that adopted, yet because the rigidity of paper is not enough and weight is very heavy, so can only be used for the lower honeycomb structure of level.
In the manufacturing process of traditional taper or plane drum paper, the top and bottom of the honeycomb structure in intermediate layer attach aluminium foil more and form the aluminium honeycomb.Yet because honeycomb structure is to be hollow shape, the area that the surface contact with aluminium foil is very little, can only lean on every fine honeycomb EDGE CONTACT, so applying glue is very difficult, and needs the very special glue of employing go to adhere.And the manufacturing process, the glue will directly affect the success or failure of aluminum honeycomb, Cui glue smear not careful it will flow once flow honeycomb, this honeycomb board to be scrapped.High just because of the gluing difficulty, must adopt special devices to carry out airless spraying.Again because the quality of glue directly influences following and heatproof of honeycomb structure, because aluminium pool and honeycomb structure contact-making surface are little, the then intensity that wants to reach certain must need the very special glue of use then simultaneously.At last, the aluminium honeycomb top and bottom that obtain will further attach woven cloth, nonwoven fabrics, paper (like brown paper etc.) etc., and this manufacturing process still belongs to needs special installation to reach consistency of product and high yield.
To sum up, the finished product rate of the manufacturing process of traditional taper or plane drum paper is low, quality is unstable, and owing to need to adopt special glue and special vacuum spraying equipment, its cost is high.This has also directly caused the manufacturing cost of loud speaker to be difficult to reduce.
Summary of the invention
One of the object of the invention is to provide a kind of bulging paper, and it is a kind of plane drum paper with sandwich structure, and adopts novel expanded material to process through injection-molded technology, and it can replace the cellular plane drum paper (or oscillating plate) of tradition.
Two of the object of the invention is to provide a kind of loud speaker, and it has a kind of plane drum paper, and this drum paper is a kind of sandwich structure and adopts novel expanded material to process through injection-molded technology.
Three of the object of the invention is to provide a kind of manufacturing approach of bulging paper of loud speaker, its based on injection-molded technology, adopt novel expanded material through making a kind of plane drum paper with sandwich structure.
To achieve these goals; The invention discloses a kind ofly based on injection-molded process drum paper and the loud speaker that adopts this drum paper, this loud speaker comprises an electroacoustic transducer, support frame placed on it, one and places the inner bulging paper in scaffold top.
Wherein, described bulging paper bag contains polypropylene expanded layer and lays respectively at its end face cover layer and bottom surface cover layer of both sides up and down.Said polypropylene expanded layer is a slab construction, adopts polypropylene material to process through injection-molded technology.
Said end face cover layer and bottom surface cover layer are slab construction, adopt paper, sheet metal or braid to process respectively.
Further be provided with tack coat respectively between said end face cover layer and bottom surface cover layer and the polypropylene expanded layer, said tack coat is the anaerobic colloid.
In a preferred embodiment, said end face cover layer and bottom surface cover layer adopt brown paper to process.
In a preferred embodiment, said end face cover layer and bottom surface cover layer adopt aluminum metal thin slice, titanium thin slice or other sheet metals that is suitable for to process.
In a preferred embodiment, said end face cover layer and bottom surface cover layer adopt nonwoven fabrics, flat fabric or other braids that is suitable for to process also.
The bulging paper of said loud speaker, adopt the following steps manufacturing:
Step 1: the polypropylene through containing blowing agent injects injection moulding forming machine, obtains polypropylene expanded layer through molded.
Step 2: the both side surface up and down at the polypropylene expanded layer of gained evenly applies the anaerobic colloid, forms corresponding tack coat.
Step 3: on the tack coat of said polypropylene expanded layer both sides up and down, cover paper, sheet metal or braid respectively, correspondingly form end face cover layer and bottom surface cover layer.
It is intraformational bed that bulging paper of the present invention adopts polypropylene expanded material, and its top and bottom impose paper, cloth, sheet metal etc. respectively and form a kind of sandwich structure, and it has following characteristic:
1, heatproof: because polyacrylic high-temperature stability, so this drum paper heatproof degree reaches 120 ℃.
2, high damping characteristic: because the good damping characteristic of polypropylene tool; And foam process has further promoted its damping characteristic; Therefore the polypropylene expanded layer in the middle of the drum paper has played good absorption to vibrations, with other honeycomb flat board by comparison, bulging paper of the present invention has toughness preferably.
3, high rigidity: the special sandwich structure of bulging paper of the present invention provides very high rigidity, so the tone color of its sound can the adjustment to some extent along with the change of the tectal material of end face cover layer and bottom surface that is positioned at polypropylene expanded layer top and bottom.
4, lighting: because the intermediate course of bulging paper of the present invention adopts PP foam material, its lighter weight is so reached the purpose of bulging paper lighting.
5, high performance-price ratio: the polypropylene that the present invention adopted, sheet metal (for example aluminium or magnesium thin slice), cloth, paper (like brown paper) etc. are not high unit price materials; And do not adopt special glue and special spraying equipment; Manufacturing process is simply many than traditional drum fabrication technique made of paper; Therefore the manufacturing cost of bulging paper of the present invention is lower, can replace the bulging paper with honeycomb structure of traditional and expensive, and further reduce the manufacturing cost of loud speaker.
In sum, bulging paper of the present invention not only manufacturing cost is lower and have an aforesaid various superperformance, so it overcomes and improved the shortcoming of existing conventional flat small drum for marking time paper, can better be applicable to loud speaker.And can come the further sound property of adjustment loud speaker, thereby make it can be widely used in the loud speaker industry through the tectal change of end face cover layer and bottom surface with material to bulging paper of the present invention.
Below, will do further explanation through concrete embodiment, yet embodiment only being giving an example of alternative embodiment of the present invention, its disclosed characteristic only is used for explanation and sets forth technical scheme of the present invention, and is not used in qualification protection scope of the present invention.
Description of drawings
Fig. 1 is the structural representation that paper is roused on traditional loud speaker plane.
Fig. 2 is the structural representation of bulging paper of the present invention.
Fig. 3 is the manufacturing flow chart of bulging paper of the present invention.
Fig. 4 is the structural representation of loud speaker of the present invention.
Embodiment
According to claim of the present invention and the disclosed content of specification, technical scheme of the present invention literary composition specific as follows is said.
Shown in Figure 3 is the manufacturing process of bulging paper of the present invention, and bulging paper of the present invention is mainly through the following steps manufacturing.
At first,, will inject injection moulding forming machine, obtain polypropylene expanded layer 31 through molded through the polypropylene that contains blowing agent in step 1.
Subsequently, in step 2, evenly apply the anaerobic colloid, form corresponding tack coat 34 in the both side surface up and down of the polypropylene expanded layer of gained 31.
Subsequently, in step 3, on the tack coat of said polypropylene expanded layer both sides up and down, cover paper, sheet metal or braid respectively, correspondingly form end face cover layer 32 and bottom surface cover layer 33.
Through above-mentioned manufacture process, obtain bulging paper as shown in Figure 2, it comprises polypropylene expanded layer 31 and lays respectively at its end face cover layer 32 and bottom surface cover layer 33 of both sides up and down.
Said polypropylene expanded layer 31 is a slab construction, adopts polypropylene material to process through injection-molded technology.
Said end face cover layer 32 is a slab construction with bottom surface cover layer 33, adopts paper, sheet metal or braid to process respectively.
Further be provided with tack coat 34 respectively between said end face cover layer 32 and bottom surface cover layer 33 and the polypropylene expanded layer 31.Said tack coat (34) is the anaerobic colloid.
Use the panel speaker of PP foam material as drum paper intermediate course, its frequency response meeting is different because of the difference of the material that drum paper top and bottom are adopted, promptly along with end face cover layer 32 changes with the different of bottom surface cover layer 33 used materials.Generally speaking, visual application is different and adopt different materials to reach the target of anticipation.For example, end face cover layer 32 adopts the preferable material (like metal) of rigidity with bottom surface cover layer 33, and its high frequency extends can be preferable, is suitable for the alt loudspeaker, if adopt paper or fibre object, then is suitable for middle bass horn.Shown in the following table is the performance comparison of traditional drum paper and bulging paper of the present invention.
As shown in Figure 4; Loud speaker of the present invention adopt prior art general foundation structure and base components; It comprises an electroacoustic transducer 1, support frame placed on it 2, one place the inner bulging paper 3 in scaffold 2 tops, the aforesaid bulging paper structure of described bulging paper 3 employings.
Table one
Nomex: formal name used at school is a Fanglun 1313.Be commonly called as: aramid fiber
According to shown in the table one, in following examples, further optimize end face cover layer 32 and bottom surface cover layer 33, obtaining the preferable bulging paper of performance, and corresponding the employing should be roused paper in loud speaker.
Preferred embodiment one:
Loud speaker of the present invention comprise an electroacoustic transducer 1, support frame placed on it 2, one place the inner bulging paper 3 in scaffold 2 tops.Described electroacoustic transducer with place scaffold 2 adopt prior aries general foundation structure and base components.The structure of described bulging paper 3 is that wherein said end face cover layer 32 adopts brown paper to process with bottom surface cover layer 33 as stated.
Preferred embodiment two:
Loud speaker of the present invention comprise an electroacoustic transducer 1, support frame placed on it 2, one place the inner bulging paper 3 in scaffold 2 tops.Described electroacoustic transducer with place scaffold 2 adopt prior aries general foundation structure and base components.The structure of described bulging paper 3 is that wherein said end face cover layer 32 adopts aluminum metal thin slice, titanium thin slice or other sheet metals that is suitable for to process with bottom surface cover layer 33 as stated.
Preferred embodiment three:
Loud speaker of the present invention comprise an electroacoustic transducer 1, support frame placed on it 2, one place the inner bulging paper 3 in scaffold 2 tops.Described electroacoustic transducer with place scaffold 2 adopt prior aries general foundation structure and base components.The structure of described bulging paper 3 is that wherein said end face cover layer 32 adopts nonwoven fabrics, flat fabric or other braids that is suitable for to process with bottom surface cover layer 33 as stated.
As stated, loud speaker of the present invention adopts a kind of bulging paper based on injection-molded technology, and its intraformational bed adopts PP foam material to process; In this PP foam material layer top and bottom spreading glue, because this intraformational bed is the expanded polypropylene material, its surface is smooth basically; Rise and fall but amplitude is little even if having; Be easy to applying glue, the method for applying glue can be methods such as spraying, brushing, need not the equipment system industry of special expensive.Since the surface contact with the top layer for the full wafer of face then, contact-making surface is big, so in that select on the glue need not extraordinary glue, gluing is also convenient, needs only taking environmental conservation into consideration, and is weather-proof, heatproof, adhering firmly enough gets final product.Said polypropylene layer can be cut into required circle as required, and imposes paper, cloth or metal according to the concrete required of loud speaker on the polypropylene layer both sides, and can adjust change material and respective thickness arbitrarily by actual demand.The polypropylene expanded material that is adopted is in light weight, good rigidly, good toughness and high temperature resistant,
In sum, the low cost of manufacture of the bulging paper of loud speaker of the present invention, technology be simple, equipment is not had specific (special) requirements, and be applicable to production in enormous quantities.Correspondingly, therefore loud speaker of the present invention has also had lower manufacturing cost and high rate of finished products.
Foregoing is giving an example of specific embodiment of the present invention, for the wherein not equipment of detailed description and structure, is to be understood that to taking existing common apparatus in this area and universal method to implement.
The above embodiment of the present invention is merely the usefulness that technical scheme of the present invention is described simultaneously, is merely enumerating of technical scheme of the present invention, is not limited to technical scheme of the present invention and protection range thereof.Adopt equivalent technologies means, equivalent apparatus etc. the improvement of claims of the present invention and the disclosed technical scheme of specification will be understood that it is not exceed claims of the present invention and the disclosed scope of specification.
Claims (8)
1. loud speaker based on injection-molded technology; Comprise an electroacoustic transducer (1), a support frame placed on it (2), a bulging paper (3) that places inside, scaffold (2) top; It is characterized in that described bulging paper (3) further comprises polypropylene expanded layer (31) and lays respectively at its end face cover layer (32) and bottom surface cover layer (33) of both sides up and down;
Said polypropylene expanded layer (31) is a slab construction, adopts polypropylene material to process through injection-molded technology;
Said end face cover layer (32) and bottom surface cover layer (33) are slab construction;
Further be provided with tack coat (34) respectively between said end face cover layer (32) and bottom surface cover layer (33) and the polypropylene expanded layer (31).
2. loud speaker as claimed in claim 1 is characterized in that, said tack coat (34) is the anaerobic colloid.
3. loud speaker as claimed in claim 2 is characterized in that, said end face cover layer (32) and bottom surface cover layer (33) adopt paper to process.
4. loud speaker as claimed in claim 3 is characterized in that, said end face cover layer (32) and bottom surface cover layer (33) adopt brown paper to process.
5. loud speaker as claimed in claim 2 is characterized in that, said end face cover layer (32) and bottom surface cover layer (33) adopt sheet metal to process.
6. loud speaker as claimed in claim 5 is characterized in that, said end face cover layer (32) and bottom surface cover layer (33) adopt aluminum metal thin slice or titanium thin slice to process.
7. loud speaker as claimed in claim 2 is characterized in that, said end face cover layer (32) and bottom surface cover layer (33) adopt braid to process.
8. loud speaker as claimed in claim 7 is characterized in that, said end face cover layer (32) and bottom surface cover layer (33) adopt nonwoven fabrics or flat fabric to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202157235U CN202395974U (en) | 2011-06-10 | 2011-06-10 | Loudspeaker based on injection molding technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202157235U CN202395974U (en) | 2011-06-10 | 2011-06-10 | Loudspeaker based on injection molding technique |
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| Publication Number | Publication Date |
|---|---|
| CN202395974U true CN202395974U (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202157235U Expired - Fee Related CN202395974U (en) | 2011-06-10 | 2011-06-10 | Loudspeaker based on injection molding technique |
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| Country | Link |
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| CN (1) | CN202395974U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102821348A (en) * | 2011-06-10 | 2012-12-12 | 宁波升亚电子有限公司 | Loudspeaker based on injection molding process |
| CN111263274A (en) * | 2020-03-31 | 2020-06-09 | 歌尔股份有限公司 | Vibrating diaphragm, sound production device and electronic device |
-
2011
- 2011-06-10 CN CN2011202157235U patent/CN202395974U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102821348A (en) * | 2011-06-10 | 2012-12-12 | 宁波升亚电子有限公司 | Loudspeaker based on injection molding process |
| CN102821348B (en) * | 2011-06-10 | 2018-07-03 | 宁波升亚电子有限公司 | A kind of loud speaker based on injection molding technique |
| CN111263274A (en) * | 2020-03-31 | 2020-06-09 | 歌尔股份有限公司 | Vibrating diaphragm, sound production device and electronic device |
| WO2021196699A1 (en) * | 2020-03-31 | 2021-10-07 | 歌尔股份有限公司 | Diaphragm, sound generating device and electronic device |
| CN111263274B (en) * | 2020-03-31 | 2021-11-30 | 歌尔股份有限公司 | Vibrating diaphragm, sound production device and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20190610 |