CN110351634B - Sound basin and loudspeaker - Google Patents
Sound basin and loudspeaker Download PDFInfo
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- CN110351634B CN110351634B CN201910568816.7A CN201910568816A CN110351634B CN 110351634 B CN110351634 B CN 110351634B CN 201910568816 A CN201910568816 A CN 201910568816A CN 110351634 B CN110351634 B CN 110351634B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/14—Polyalkenes, e.g. polystyrene polyethylene
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
- D10B2321/0211—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene high-strength or high-molecular-weight polyethylene, e.g. ultra-high molecular weight polyethylene [UHMWPE]
Abstract
The invention relates to a sound cone and a loudspeaker. The sound cone is made of an ultra-high molecular weight polyethylene prefabricated body, and the thickness of the sound cone is 50-300 microns; the ultrahigh molecular weight polyethylene preform is provided with an ultrahigh molecular weight polyethylene material, and the molecular weight of the ultrahigh molecular weight polyethylene material is 106≤MW≤5*106The elastic modulus is 50GPa < E < 400 GPa. The invention has the technical effects that: the cone is mainly made of ultra-high molecular weight polyethylene material, and has the characteristics of high strength, light weight, high sensitivity, insensitivity to environmental humidity and good thermal stability.
Description
Technical Field
The invention relates to the technical field of electroacoustic conversion, in particular to a sound cone and a loudspeaker using the sound cone.
Background
The cone is an essential component applied in a loudspeaker and mainly plays a role in sound radiation. Nowadays, people put higher and higher requirements on the performances of high fidelity, high power and the like of the loudspeaker. The cone resembles the heart of a loudspeaker vibration system, and directly influences performance indexes such as the resonant frequency, effective frequency, sensitivity and distortion degree of the loudspeaker.
In fact, the characteristics of the cone material and the production process have a great influence on the performance of the cone, such as the sound quality. Therefore, in the manufacture of the cone, high requirements are placed on the Young's modulus, the density, the damping coefficient, the internal loss, the strength and the like of the manufacturing material. Specifically, the harder the material is, the lighter the mass is, and the wider the band is; the larger the internal loss, the smoother the response and the better the sound quality. That is, for a high performance speaker, the requirements for the sound cone are small density, light weight, high strength, good toughness, uniform structure, and the like.
At present, paper materials, polypropylene materials, resin fiber materials and metal materials are common materials for manufacturing the cone. The cone (also called as cone) made of paper material has the characteristics of natural tone, low price, good rigidity and high material sensitivity in use, but the cone is made of paper material, so that the cone is sensitive to the environmental humidity, and the consistency is difficult to control in manufacturing. The cone made of the polypropylene material has the advantages of good high-frequency response, good consistency, low distortion and insensitivity to environmental humidity, but the cone made of the polypropylene material has slightly viscous timbre, and the polyethylene material is not easy to adhere, so that certain inconvenience is brought to the manufacturing process of the cone. The sound cone made of the resin fiber material is hard, hysteresis is not easy to generate, the sound cone is insensitive to the ambient humidity, and thermal stability is good, but the high-frequency response of the sound cone made of the resin fiber material is not smooth, and fatigue feeling can occur after long-time listening. The sound cone made of the metal material has higher rigidity, specific elasticity and sound propagation speed than the three materials, and also has better moisture resistance and better thermal stability. In addition, the sound cone made of metal materials can be subjected to various different shapes and colors, so that different characteristics can be expressed in appearance. However, the metal material has disadvantages of heavy material and low sensitivity.
Therefore, the existing materials for manufacturing the sound cone have defects to a certain extent, and cannot meet the requirements of high-performance speakers.
Disclosure of Invention
The invention aims to provide a new technical scheme of a sound cone.
According to the first aspect of the invention, the cone is made of an ultra-high molecular weight polyethylene preform, and the thickness of the cone is 50-300 μm;
the ultrahigh molecular weight polyethylene preform is provided with an ultrahigh molecular weight polyethylene material;
the molecular weight of the ultra-high molecular weight polyethylene material is 106≤MW≤5*106The elastic modulus is 50GPa < E < 400 GPa.
Optionally, the sound cone is made of the ultra-high molecular weight polyethylene preform by means of hot press molding.
Optionally, the ultra-high molecular weight polyethylene preform is an ultra-high molecular weight polyethylene film material tape made of ultra-high molecular weight polyethylene resin.
Optionally, the ultrahigh molecular weight polyethylene preform is an ultrahigh molecular weight polyethylene fiber fabric formed by interweaving ultrahigh molecular weight polyethylene fiber warp yarns and ultrahigh molecular weight polyethylene fiber weft yarns.
Optionally, the ultrahigh molecular weight polyethylene preform is a multilayer composite structure, and includes honeycomb-shaped fiber paper made of ultrahigh molecular weight polyethylene fibers, and protective layers fixedly bonded to two surfaces of the honeycomb-shaped fiber paper.
Optionally, the protective layer is a glass fiber cloth or a metal material layer.
Optionally, the protective layer is fixed on the honeycomb fiber paper by heat-resistant adhesive.
Optionally, the sound cone is made of the ultrahigh molecular weight polyethylene preform by a papermaking forming method; and the ultrahigh molecular weight polyethylene preform is prepared by adding ultrahigh molecular weight polyethylene chopped fibers into paper pulp.
Optionally, the added mass of the ultra-high molecular weight polyethylene chopped fibers is 5-30% of the mass of the pulp.
According to a second aspect of the present invention there is provided a loudspeaker comprising any of the above-described cones.
According to the sound cone provided by the embodiment of the invention, the manufacturing material of the sound cone is improved, and an ultrahigh molecular weight polyethylene material is mainly adopted. Based on the performance characteristics of the ultra-high molecular weight polyethylene material, the manufactured cone has the characteristics of high strength, light weight, high sensitivity, insensitivity to environmental humidity and good thermal stability. Particularly, the sound cone made of the material can have higher strength at low temperature (-100 ℃). Moreover, when the sound cone is made of the ultra-high molecular weight polyethylene material, the thickness of the sound cone can be thinner, so that the sound cone has a wider thickness range, and the whole sound cone can be suitable for loudspeakers with different assembly space sizes.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a sound cone provided in an embodiment of the present invention.
Fig. 2 is a partially enlarged schematic view at a in fig. 1.
Description of reference numerals:
1-cone, 11-honeycomb fiber paper, 12-heat-resistant adhesive and 13-protective layer.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1, the cone provided in the embodiment of the present invention may include a cone body 1 and a folded ring (not shown in the figure), where the folded ring may be adhered to the outer edge of the large end of the cone body 1 by an adhesive, and of course, the folded ring may also be fixedly connected to the outer edge of the large end of the cone body 1 by other means known to those skilled in the art, which is not limited in the present invention.
In the invention, the whole cone can be made of an ultra-high molecular weight polyethylene prefabricated body. Of course, the cone 1 may be made of ultra-high molecular weight polyethylene preform, and the corrugated rim may be made of materials known to those skilled in the art, but the present invention is not limited thereto. Wherein, the ultra-high molecular weight polyethylene preform is provided with an ultra-high molecular weight polyethylene material. The sound cone provided by the embodiment of the invention can be applied to a loudspeaker, and particularly can be applied to high-performance loudspeakers such as high-power automobile sound equipment and professional sound equipment.
The sound cone provided by the embodiment of the invention is improved in manufacturing material, namely, the sound cone is made of an ultrahigh molecular weight polyethylene material. Among them, the ultra-high molecular weight polyethylene material has many advantages, specifically:
(1) ultra-high molecular weight polyethylene (UHMWPE) is an engineering plastic with a linear long-chain structure and excellent comprehensive performance.
The molecular weight of the ultra-high molecular weight polyethylene is 106≤MW≤5*106. The density of the ultra-high molecular weight polyethylene is 0.5g/cm-3＜ρ＜1.5g/cm-3. The ultra-high molecular weight polyethylene has the characteristic of low density, so that the sound cone is light in weight, and the weight of the whole sound cone can be reduced. When the cone is applied in a loudspeaker, the weight of the loudspeaker is not increased. The elastic modulus of the ultra-high molecular weight polyethylene is 50GPa < E < 400GPa, or 100GPa < E < 250 GPa. Therefore, the ultra-high molecular weight polyethylene has higher elastic modulus, so that the manufactured cone has high elastic modulusThe device has the advantages that the segmentation vibration can be reduced and the distortion can be reduced in use. Moreover, the elastic modulus of the ultra-high molecular weight polyethylene can reach 50GPa < E < 400GPa or 100GPa < E < 250GPa under the temperature condition of 100 ℃ below zero. That is, the ultra-high molecular weight polyethylene also has the characteristic of good low-temperature performance, and the cone made of the material can be normally used even in a low-temperature state.
Based on the above performances of the ultra-high molecular weight polyethylene, the manufactured cone has the advantages of high elastic modulus, light weight, wider frequency response, sensitivity improvement and the like.
(2) The ultra-high molecular weight polyethylene has a tensile strength of 1-7GPa, or 2.5-4GPa, i.e. the ultra-high molecular weight polyethylene has excellent tensile strength. After the cone is made of the material, the service life of the cone can be prolonged under high power, so that the service life of the loudspeaker can be prolonged to a great extent.
(3) The water absorption of the ultra-high molecular weight polyethylene is 0-1%, or 0-0.05%. It can be seen that the ultra-high molecular weight polyethylene has hydrophobic properties. The conventional sound cone made of paper materials is very sensitive to the environment. The ultra-high molecular weight polyethylene is insensitive to the environment due to low water absorption rate, and the sound cone made of the ultra-high molecular weight polyethylene can keep good acoustic stability in various environments. The melting point of the ultra-high molecular weight polyethylene is generally 100-180 ℃, and the heat resistance is better.
In summary, based on the hydrophobic property of the ultra-high molecular weight polyethylene, the high elastic modulus at low temperature, the high melting point temperature, and the wear resistance, ultraviolet resistance and chemical corrosion resistance, the cone made of the ultra-high molecular weight polyethylene material can be used in different environments, and can keep stable and reliable performance in use.
And based on the performance of the ultra-high molecular weight polyethylene, the manufactured cone has the advantages of high strength, light weight, high sensitivity, good damping, water resistance, moisture resistance, bending resistance, good tearing resistance and the like.
The cone of the invention can control the thickness of the cone within 50-400 μm based on the characteristics of the manufacturing material. Specifically, the thickness of the cone may be, for example, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 125 μm, 150 μm, 175 μm, 200 μm, 225 μm, 250 μm, 275 μm, 300 μm, 325 μm, 350 μm, etc., and may be flexibly set according to actual circumstances in a specific application, which is not limited by the present invention. In fact, the cone of the present invention can be made thinner in thickness than conventional cones. That is, the cone of the present invention may have a wide thickness range, which may be suitable for different assembly space requirements, thereby expanding the range of use of the cone. Moreover, as the thickness of the cone is reduced, the overall weight of the cone can be reduced, and the weight of a speaker using the cone can be reduced.
The cone is made of an ultra-high molecular weight polyethylene prefabricated body. The ultra-high molecular weight polyethylene prefabricated body can be in various forms so as to be suitable for different processing technologies and be beneficial to the production and the manufacture of the sound cone. However, it should be noted that the ultra-high molecular weight polyethylene preform has the ultra-high molecular weight polyethylene material therein regardless of the form of the ultra-high molecular weight polyethylene preform.
Different processing modes can be correspondingly adopted for different forms of ultra-high molecular weight polyethylene preforms so as to manufacture the ultra-high molecular weight polyethylene preforms into the cone. Specifically, the processing method may be a hot press molding method or a paper making molding method, for example. Of course, other processing means known to those skilled in the art may be used depending on the ultra-high molecular weight polyethylene preform.
To further describe the cone of the present invention, it is described below separately in different embodiments.
Example 1
The cone is made of an ultra-high molecular weight polyethylene prefabricated body. In this embodiment, the ultra-high molecular weight polyethylene preform is actually an ultra-high molecular weight polyethylene film tape made of ultra-high molecular weight polyethylene resin. In this embodiment, the ultra-high molecular weight polyethylene material refers to an ultra-high molecular weight polyethylene resin. In addition, the ultra-high molecular weight polyethylene resin is processed into the ultra-high molecular weight polyethylene film material belt in a manner well known to those skilled in the art, and the invention is not described in detail herein.
In this embodiment, the sound cone may be manufactured by processing the ultra-high molecular weight polyethylene film material strip by a hot press molding process. In the hot press forming process, the temperature of the hot press forming needs to be controlled, and usually the temperature can be controlled at 100-130 ℃. Specifically, based on the properties of the ultra-high molecular weight polyethylene, the temperature for hot press forming should not be too high, otherwise the ultra-high molecular weight polyethylene film tape may be damaged. The parameters such as the pressure and the time of the hot press molding can be flexibly set according to specific conditions, and the invention is not limited to this.
In this embodiment, the ultra-high molecular weight polyethylene film material tape made of the ultra-high molecular weight polyethylene resin is subjected to hot press molding, so as to obtain the sound cone. The whole process is simple to operate, the manufacturing cost is low, and the manufactured sound basin has the characteristics of high strength, light weight, high sensitivity, good damping, water resistance, moisture resistance, bending resistance and good tearing resistance.
Example 2
The cone is made of an ultra-high molecular weight polyethylene prefabricated body. In this embodiment, the ultra-high molecular weight polyethylene preform is actually: the ultra-high molecular weight polyethylene fiber fabric is prepared by interweaving ultra-high molecular weight polyethylene fiber warp yarns and ultra-high molecular weight polyethylene fiber weft yarns. In this embodiment, the ultra-high molecular weight polyethylene material refers to ultra-high molecular weight polyethylene fibers. In addition, the weaving method for weaving the ultrahigh molecular weight polyethylene fiber warp and the ultrahigh molecular weight polyethylene fiber weft into the ultrahigh molecular weight polyethylene fiber fabric is well known by those skilled in the art, and the invention is not described in detail herein.
In this embodiment, the ultra-high molecular weight polyethylene fiber fabric may be processed into the sound cone by a hot press molding process. In the hot press forming process, the temperature of the hot press forming needs to be controlled, and usually the temperature can be controlled at 100-130 ℃. In particular, based on the properties of the ultra-high molecular weight polyethylene, the temperature for hot press forming should not be too high, otherwise the ultra-high molecular weight polyethylene fiber fabric would be damaged. The parameters such as the pressure and the time of the hot press molding can be flexibly set according to specific conditions, and the invention is not limited to this.
In this embodiment, the ultra-high molecular weight polyethylene fiber is first woven into a yarn, then woven into an ultra-high molecular weight polyethylene fiber fabric, and finally the ultra-high molecular weight polyethylene fiber fabric is made into the cone by using a hot press molding process. The manufactured sound cone also has the characteristics of high strength, light weight, high sensitivity, good damping, water resistance, moisture resistance and good tearing resistance.
Example 3
The cone is made of an ultra-high molecular weight polyethylene prefabricated body. In this embodiment, the ultra-high molecular weight polyethylene preform is actually a multi-layer composite structure, as shown in fig. 2, the structure is: the fabric comprises honeycomb fiber paper 11 made of ultra-high molecular weight polyethylene fibers and protective layers 13 fixedly combined on the upper surface and the lower surface of the honeycomb fiber paper 11, wherein the protective layers 13 can be glass fiber cloth or metal material layers.
In the present embodiment, the ultra-high molecular weight polyethylene material is honeycomb-shaped fiber paper 11 made of ultra-high molecular weight polyethylene fibers. The honeycomb-shaped fiber paper 11 made of the ultra-high molecular weight polyethylene fiber has the characteristics of low density, high sensitivity and large internal damping. When the method is used for manufacturing the cone and the cone corresponds to the loudspeaker, the distortion can be reduced, the frequency response curve is smooth, and the tone quality is natural.
In this embodiment, the protective layer 13 may be directly adhered to the surface of the honeycomb fiber paper 11 by the heat-resistant adhesive 12. Specifically, the protective layer 13 can effectively protect the honeycomb-shaped fiber paper 11, and can also properly improve the rigidity of the cone and prolong the service life of the cone. The heat-resistant adhesive 12 may be an adhesive known to those skilled in the art, such as an epoxy resin adhesive, a phenolic resin adhesive, and the like, and has the characteristics of good adhesion and good stability, so that the protective layer 13 can be firmly bonded to the upper and lower surfaces of the honeycomb fiber paper 11.
In this embodiment, the protective layer 13 may be made of a glass cloth, and the glass cloth is bonded to the surface of the honeycomb fiber paper 11 by the heat-resistant adhesive 12. The glass fiber cloth has good covering function and tensile resistance, and can well protect the honeycomb-shaped fiber paper 11. Moreover, the glass fiber cloth is green and environment-friendly, and cannot cause pollution to the environment.
In this embodiment, the protective layer 13 may also be a metal material layer formed of a metal material. The metallic material layer is generally formed using a lightweight metallic material well known to those skilled in the art, such as: aluminum, aluminum-magnesium alloys, titanium, beryllium, manganese, and the like, which are not intended to limit the present invention. The metal material layer can play a good role in protecting the honeycomb-shaped fiber paper 11. The metal material layer can also properly improve the integral rigidity of the cone, so that the service life of the cone can be properly prolonged.
It should be noted that, when the upper and lower surfaces of the honeycomb fiber paper 11 are connected with the protective layers 13, the protective layers 13 on the upper and lower surfaces may be the same or different, and may be flexibly adjusted according to specific situations, which is not limited in the present invention. In addition, when the protective layers 13 are attached to the upper and lower surfaces of the honeycomb-shaped fiber paper 11, the heat-resistant adhesive 12 is not limited to the bonding method, and other methods known to those skilled in the art may be used.
Example 4
The cone is made of an ultra-high molecular weight polyethylene prefabricated body. In this embodiment, the ultra-high molecular weight polyethylene preform is: adding a proper amount of ultra-high molecular weight polyethylene chopped fibers into prepared paper pulp, and uniformly mixing the ultra-high molecular weight polyethylene chopped fibers with the paper pulp to form a mixture.
In this embodiment, the ultra-high-molecular-weight polyethylene material is ultra-high-molecular-weight polyethylene chopped fibers. Wherein, the length of the ultra-high molecular weight polyethylene chopped fiber can be controlled within 3-20mm, mainly in order to ensure that the ultra-high molecular weight polyethylene chopped fiber can be well mixed with the paper pulp.
In this example, the added mass of the ultra-high molecular weight polyethylene chopped fibers is 5-30% of the mass of the pulp. The cone made by the proportion has the characteristics of small mass and high rigidity, and can have proper damping. Meanwhile, the problem of environmental sensitivity of pure paper materials can be solved. Of course, the amount ratio of the ultra-high molecular weight polyethylene chopped fibers to the pulp can be reasonably adjusted according to actual conditions, and the invention is not limited to this.
In this embodiment, the ultra-high molecular weight polyethylene preform is a mixture of pulp and ultra-high molecular weight polyethylene chopped fibers, and at this time, the sound cone may be made by a papermaking forming process. The papermaking process is well known to those skilled in the art, and mainly includes the steps of beating, sizing, forming, and hot pressing, and will not be described in detail here. However, it should be noted that the temperature should be reasonably controlled in the hot pressing, and is usually controlled at 100 ℃ and 130 ℃.
The cone is mainly made of ultra-high molecular weight polyethylene materials, and has the following characteristics in combination:
(1) the strength, rigidity, sound propagation speed and the like of the sound cone are obviously greater than those of the sound cone made of traditional materials, the frequency response of the sound cone is wide, the segmentation vibration is smaller than that of the sound cone made of traditional materials, and the distortion is obviously reduced.
(2) The sound basin has excellent water resistance, good low-temperature characteristic, wear resistance, ultraviolet resistance and chemical corrosion resistance, can be applied to various environments, and can keep stable and reliable performance when used in various environments.
(3) The sound cone has higher tensile strength, so that the sound cone can be suitable for high-fidelity and high-power automobile sound equipment and speaker systems with high performance requirements such as professional sound equipment, and the application range of the sound cone is expanded.
(4) The cone has proper internal damping, and when the cone is applied to a loudspeaker, the cone has the characteristics of small fluctuation of a frequency response curve, low distortion and good listening effect.
(5) The cone is light in weight, and when the cone is applied to a loudspeaker, the weight of the whole loudspeaker can be reduced.
(6) The ultra-high molecular weight polyethylene material is used as a main manufacturing material of the cone, and the material is suitable for various forming and processing processes, so that the cone is more convenient to produce and manufacture.
In another aspect, embodiments of the present invention further provide a speaker, where the speaker includes any one of the sound cones described above.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. The cone is characterized in that the cone is made of an ultra-high molecular weight polyethylene prefabricated body, and the thickness of the cone is 50-300 microns;
the ultrahigh molecular weight polyethylene preform is provided with an ultrahigh molecular weight polyethylene material;
the molecular weight of the ultra-high molecular weight polyethylene material is 106≤MW≤5*106The elastic modulus is 50GPa < E < 400 GPa.
2. The cone as claimed in claim 1, wherein the ultra-high molecular weight polyethylene preform is formed into the cone by hot press molding.
3. The cone of claim 2 wherein the ultra-high molecular weight polyethylene preform is an ultra-high molecular weight polyethylene film tape made of ultra-high molecular weight polyethylene resin.
4. The sound cone as claimed in claim 2, wherein the ultra-high molecular weight polyethylene preform is an ultra-high molecular weight polyethylene fiber fabric made by interweaving ultra-high molecular weight polyethylene fiber warp yarns and ultra-high molecular weight polyethylene fiber weft yarns.
5. The sound cone as claimed in claim 2, wherein the ultra-high molecular weight polyethylene preform has a multi-layer composite structure comprising a honeycomb-shaped fiber paper made of ultra-high molecular weight polyethylene fibers, and protective layers fixedly bonded to both surfaces of the honeycomb-shaped fiber paper.
6. The sound cone of claim 5, wherein the protective layer is a glass cloth or a metal material layer.
7. The sound cone as claimed in claim 5, wherein the protective layer is adhered and fixed on the honeycomb fiber paper by a heat-resistant adhesive.
8. The cone as claimed in claim 1, wherein the ultra-high molecular weight polyethylene preform is formed into the cone by paper making;
and the ultrahigh molecular weight polyethylene preform is prepared by adding ultrahigh molecular weight polyethylene chopped fibers into paper pulp.
9. The cone according to claim 8, wherein the added mass of the ultra-high molecular weight polyethylene chopped fibers is 5-30% of the mass of the pulp.
10. A loudspeaker comprising a cone as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910568816.7A CN110351634B (en) | 2019-06-27 | 2019-06-27 | Sound basin and loudspeaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910568816.7A CN110351634B (en) | 2019-06-27 | 2019-06-27 | Sound basin and loudspeaker |
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| CN110351634A CN110351634A (en) | 2019-10-18 |
| CN110351634B true CN110351634B (en) | 2021-01-15 |
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