WO2022143208A1 - 振动板结构、振动板结构的制备方法、扬声器及电子终端 - Google Patents

振动板结构、振动板结构的制备方法、扬声器及电子终端 Download PDF

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Publication number
WO2022143208A1
WO2022143208A1 PCT/CN2021/138968 CN2021138968W WO2022143208A1 WO 2022143208 A1 WO2022143208 A1 WO 2022143208A1 CN 2021138968 W CN2021138968 W CN 2021138968W WO 2022143208 A1 WO2022143208 A1 WO 2022143208A1
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Prior art keywords
film layer
adhesive film
plate structure
layer
adhesive
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Ceased
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PCT/CN2021/138968
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English (en)
French (fr)
Inventor
徐延东
刘迎新
王建建
王鹏
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Goertek Inc
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Goertek Inc
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Publication of WO2022143208A1 publication Critical patent/WO2022143208A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/255—Polyesters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/28—Metal sheet
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/35—Heat-activated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/20—Presence of organic materials
    • C09J2400/22—Presence of unspecified polymer
    • C09J2400/226—Presence of unspecified polymer in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/20—Presence of organic materials
    • C09J2400/24—Presence of a foam
    • C09J2400/243—Presence of a foam in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2433/00—Presence of (meth)acrylic polymer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2463/00—Presence of epoxy resin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2467/00—Presence of polyester
    • C09J2467/006—Presence of polyester in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2475/00—Presence of polyurethane
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2479/00—Presence of polyamine or polyimide
    • C09J2479/08—Presence of polyamine or polyimide polyimide
    • C09J2479/086—Presence of polyamine or polyimide polyimide in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2483/00—Presence of polysiloxane
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/023—Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/025—Diaphragms comprising polymeric materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/029—Diaphragms comprising fibres

Definitions

  • the present invention relates to the technical field of acoustic and electrical products, in particular to a vibrating plate structure, a method for preparing the vibrating plate structure, a speaker and an electronic terminal using the vibrating plate structure.
  • Speaker is an important acoustic component of portable electronic equipment, which is used to complete the conversion between electrical signal and sound signal, and is an energy conversion device.
  • the vibrating plate of the loudspeaker adopts a composite vibrating plate, and when there are impurities such as oil stains on the surface of the outer material of the composite vibrating plate, the surface adhesion is poor, so that the vibrating plate and the diaphragm and voice coil of the loudspeaker are bonded.
  • the post-adhesion force is weak and cannot meet the reliability adhesive force requirements, and there is a problem of adhesive failure after the speaker drop reliability test; at the same time, the special surface treatment has a certain timeliness, and the cost is high.
  • the main purpose of the present invention is to provide a vibrating plate structure, a method for preparing the vibrating plate structure, a loudspeaker and an electronic terminal, aiming to provide a vibrating plate structure that does not increase excessive weight and thickness, and that the vibrating plate structure does not affect product sensitivity It can effectively increase the bonding ability and strength of the vibrating plate structure while keeping the product thickness basically unchanged, and improve the continuous working ability of the vibrating plate structure in a high humidity environment.
  • the vibration plate structure proposed by the present invention is applied to a loudspeaker, and the vibration plate structure includes:
  • thermosetting adhesive film layer the adhesive film layer is hot-pressed and compounded on at least one surface of the main body.
  • the material of the adhesive film layer includes one or more of acrylic resin, epoxy resin, silicone resin, and polyurethane resin.
  • the body has a first surface and a second surface disposed opposite to each other, the adhesive film layer includes a first adhesive film layer and a second adhesive film layer, and the first adhesive film layer is disposed on the The first surface covers the first surface, and the second adhesive film layer is disposed on the second surface and covers the second surface.
  • the body further has a side edge connecting the first surface and the second surface;
  • the adhesive film layer further includes a third adhesive film layer, and the third adhesive film layer covers the side edge and is connected with the first adhesive film layer and the second adhesive film layer.
  • the first adhesive film layer, the third adhesive film layer and the second adhesive film layer are integrally formed;
  • the thickness of the first adhesive film layer is 0.1 ⁇ m-50 ⁇ m;
  • the thickness of the second adhesive film layer is 0.1 ⁇ m-50 ⁇ m;
  • the thickness of the third adhesive film layer is 0.1 ⁇ m-50 ⁇ m.
  • the body includes a first material layer, a foam layer and a second material layer that are stacked in sequence;
  • the adhesive film layer covers the side of the first material layer and/or the second material layer facing away from the foam layer.
  • the foam layer is a PI foam or a PMI foam
  • the first material layer is one or more of Al, PI, PET, PEN, LCP, and carbon fiber composite materials;
  • the second material layer is one or more of Al, PI, PET, PEN, LCP, and carbon fiber composite materials.
  • the present invention also provides a preparation method of the above-mentioned vibration plate structure, and the preparation method comprises the following steps:
  • thermosetting adhesive film layer Attaching the thermosetting adhesive film layer to at least one surface of the body
  • the main body and the adhesive film layer are subjected to hot pressing treatment to cure or semi-cure the adhesive film layer to obtain a vibrating plate structure.
  • the present invention also provides a loudspeaker, including a casing, a magnetic circuit system and a vibration system accommodated in the casing, the vibration system comprising a diaphragm and the above-mentioned vibration plate structure, and the vibration plate structure is fixed on the The central position of the diaphragm.
  • the adhesive film layer of the vibrating plate structure is connected with the vibrating film by an adhesive
  • the vibration system further includes a voice coil, and the adhesive film layer of the vibration plate structure is connected to the voice coil through an adhesive.
  • the adhesive is UV glue.
  • the present invention also provides an electronic terminal, comprising a device casing and the above-mentioned speaker, wherein the device casing is provided with a cavity, and the speaker is provided in the cavity.
  • thermosetting adhesive film layer is arranged on at least one surface of the main body, so that the adhesive film layer is hot-pressed and compounded on the surface of the main body, so that the thermosetting adhesive film layer contains active epoxy groups, hydroxyl and other groups, so as to have excellent adhesion to metal or non-metal, so that the vibration plate structure has excellent surface bonding strength; at the same time, when the film layer and other parts of the speaker are bonded by adhesive, the film layer and the The mutual diffusion of glue molecules occurs in the adhesive, so that there is a mesophase containing two molecules on the bonding surface, thereby improving the bonding performance and the bonding force per unit area.
  • thermosetting adhesive film layer has good toughness, so that after the adhesive film layer is added to the body of the vibrating plate structure, the strength of the vibrating plate structure is effectively improved, and the adhesive film layer effectively reduces the occurrence of the vibrating plate structure in a high humidity environment.
  • the vibration plate structure proposed by the present invention not only does not increase excessive weight and thickness, but also does not affect the sensitivity response of the product, and can effectively increase the bonding ability and strength of the vibration plate structure while keeping the product thickness basically unchanged, and improve the vibration The ability of the panel structure to continue to work in high humidity environments.
  • FIG. 1 is a schematic structural diagram of a vibrating plate structure in an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of a vibrating plate structure in an embodiment of the present invention
  • Fig. 3 is the partial enlarged view of A place in Fig. 2;
  • FIG. 4 is a schematic cross-sectional view of a vibrating plate structure in another embodiment of the present invention.
  • Fig. 5 is a partial enlarged view at B in Fig. 4;
  • FIG. 6 is a partial cross-sectional schematic diagram of a speaker according to an embodiment of the present invention.
  • Fig. 7 is a partial enlarged view at C in Fig. 6;
  • FIG. 8 is a partial cross-sectional schematic diagram of a speaker in another embodiment of the present invention.
  • FIG. 9 is a partial enlarged view of D in FIG. 8 .
  • label name label name 100 Vibration plate structure twenty two second film layer 1 ontology twenty three The third film layer 11 first material layer 200
  • Vibration system 12 foam layer 210
  • Diaphragm 13 second material layer 211 inner ring 14
  • first surface 212 Ring part 15 second surface 213
  • Fixed part 16 side 220 voice coil 2 film layer 230 adhesive twenty one first film layer 300 speaker
  • Speaker is an important acoustic component of portable electronic equipment, which is used to complete the conversion between electrical signal and sound signal, and is an energy conversion device.
  • the vibrating plate of the existing loudspeaker usually adopts a composite vibrating plate, and when there are impurities such as oil stains on the surface of the outer material of the composite vibrating plate, the surface adhesion is poor, so that the vibrating plate and the diaphragm and the voice coil of the loudspeaker are bonded after bonding.
  • the adhesive force is weak and cannot meet the requirements of the reliability adhesive force, and there is a problem of adhesive failure after the speaker drop reliability test; at the same time, the special surface treatment has a certain timeliness, and the cost is high.
  • some materials such as carbon fiber composite vibration plate have low bonding strength at the junction of two carbon fiber bundles in the material layer, which is easy to break and may expose the intermediate foam layer after peeling.
  • the side foam layer of the composite vibrating plate is directly exposed to the external environment, or the carbon fiber layer of the carbon fiber composite vibrating plate is broken and peeled off, or the foam layer is exposed due to defects in the carbon fiber layer during the production process.
  • Working in a high humidity environment will absorb water and expand and eventually cause the vibrating plate to bulge in layers.
  • the present invention proposes a vibrating plate structure 100, which not only does not increase excessive weight and thickness, but also does not affect the sensitivity response of the product, and can effectively increase the thickness of the product while keeping the thickness of the product basically unchanged.
  • the bonding ability and strength of the vibration plate structure 100 are improved, and the continuous working ability of the vibration plate structure 100 in a high humidity environment is improved.
  • the vibration plate structure 100 is applied to the speaker 300 , which can effectively improve the reliability performance of the speaker 300 .
  • the speaker 300 is applied to an electronic terminal, and the electronic terminal may be an electronic device, such as a mobile phone, a stereo, a computer, an earphone, a watch, a TV, or a tablet computer, which is not limited herein.
  • the vibration plate structure 100 includes a main body 1 and a thermosetting adhesive film layer 2 , and the adhesive film layer 2 is thermally laminated on the At least one surface of the body 1 .
  • the body 1 of the vibration plate structure 100 is the main structure of the vibration plate structure 100 , and the body 1 can be a single-layer structure or a multi-layer structure, which is not limited here. It can be understood that when the body 1 is a single-layer structure, the material of the body 1 may be one or more of Al, PI, PET, PEN, LCP, and carbon fiber composite materials.
  • PI polyimide
  • PET Polyethylene terephthalate
  • PEN Polyethylene naphthalate two formic acid glycol ester
  • LCP International full name Liquid Crystal Polymer
  • Magnesium-aluminum alloy is an alloy material with low density, good strength, rigidity and dimensional stability.
  • Carbon fiber composite material is a kind of new material with excellent mechanical properties, which is a kind of new material with excellent mechanical properties, which has the inherent characteristics of carbon materials, and also has textile fibers.
  • the soft and processable type is a new generation of reinforcing fibers.
  • the body 1 can be formed into a sheet or plate-like structure by processing and injection molding, so as to facilitate installation or connection with other components of the speaker 300 .
  • the thermosetting adhesive film layer 2 is provided on the surface of the main body 1 , so that the thermosetting adhesive film layer 2 covers at least one surface of the main body 1 , so that the vibrating plate structure 100 can be effectively improved by the thermosetting adhesive film layer 2 Adhesion with other components of the speaker 300 .
  • the material of the adhesive film layer 2 includes one or more of acrylic resin, epoxy resin, silicone resin, and polyurethane resin.
  • the material of the adhesive film layer 2 can be selected from one or more of acrylic resin, epoxy resin, silicone resin, and polyurethane resin.
  • the adhesive film layer 2 may be composed of one of the above-mentioned materials alone, or may be a mixture of two or more materials, which is not limited herein.
  • acrylic resin is a general term for acrylic acid, methacrylic acid and its derivative polymers.
  • Acrylic resin coating is a thermoplastic or thermosetting resin coating made of acrylic resin obtained by copolymerizing (meth)acrylate and styrene with other acrylates.
  • Thermoplastic acrylic resin does not undergo further crosslinking during film formation, so it has a relatively large relative molecular weight, good gloss and color retention, water and chemical resistance, fast drying, convenient construction, and easy construction, recoating and rework.
  • Thermosetting acrylic resin refers to a certain functional group in the structure, which forms a network structure by reacting with the functional groups in the amino resin, epoxy resin, polyurethane, etc. added during the paint making process.
  • the relative molecular weight of thermosetting resin is generally low.
  • Thermosetting acrylic coatings have excellent fullness, gloss, hardness, solvent resistance, weather resistance, no discoloration and no yellowing during high temperature baking.
  • Epoxy resin is a general term for a class of polymers containing two or more epoxy groups in the molecule. It is the polycondensation product of epichlorohydrin and bisphenol A or polyol. Due to the chemical activity of the epoxy group, a variety of compounds containing active hydrogen can be used to open the ring, cure and crosslink to form a network structure, so it is a thermosetting resin.
  • epoxy resin softener The application characteristics of epoxy resin softener are as follows: various forms, various resins, curing agents and modifier systems can almost meet the requirements of various applications, ranging from extremely low viscosity to high melting point solid; easy to cure , using a variety of different curing agents, the epoxy resin system can be cured in the temperature range of 0 ⁇ 180 °C; strong adhesion, the existence of polar hydroxyl and ether bonds inherent in the epoxy resin molecular chain, make it suitable for Various substances have high adhesion.
  • the shrinkage of epoxy resin is low when it is cured, and the internal stress generated is small, which also helps to improve the adhesive strength; Oxygen ring-opening polymerization is carried out without the evolution of water or other volatile by-products.
  • cured epoxy resin systems Compared with unsaturated polyester resin and phenolic resin, they show very low shrinkage (less than 2%) during curing; mechanical properties, the cured epoxy resin system has excellent mechanical properties.
  • Chemical stability generally, cured epoxy resin systems have excellent resistance to alkalis, acids and solvents. Like other properties of cured epoxy systems, chemical stability also depends on the selected resin and curing agent. Appropriate selection of epoxy resin and curing agent can make it have special chemical stability. Dimensional stability, the combination of many of the properties mentioned above, gives epoxy resin systems outstanding dimensional stability and durability.
  • Polyurethane resin is the abbreviation of polyurethane, which is a kind of polymer material. Carbamates and polyols undergo transesterification to obtain polyol carbamate compounds whose structures are similar to polyamides. The urethane and aldehyde of polyol undergo cross-linking reaction to form polymers with polyurethane structure, which are used as coatings, adhesives, etc.
  • thermosetting adhesive film layer 2 is provided on at least one surface of the main body 1 by a hot pressing compound method, so that the adhesive film layer 2 covers the surface of the main body 1.
  • the adhesive film layer 2 composed of one or more of resins and polyurethane resins contains active epoxy groups, hydroxyl groups and other groups, so as to have excellent adhesion to metals or non-metals, so that the vibration plate structure 100 has excellent
  • the film layer 2 and other parts of the speaker are bonded by adhesive, the film layer 2 and the adhesive will have the phenomenon of mutual diffusion of glue molecules, so that there is a mesophase containing two molecules on the bonding surface.
  • thermosetting adhesive film layer 2 has good toughness, so that after the adhesive film layer 2 is added to the body 1 of the vibration plate structure 100, the strength of the vibration plate structure 100 is effectively improved, and the adhesive film layer 2 effectively reduces the vibration plate structure 100. Risk of bulging and delamination due to foam expansion due to water absorption in high humidity environments.
  • the vibrating plate structure 100 proposed in the present invention not only does not increase the excessive weight and thickness, but also does not affect the sensitivity response of the product, and can effectively increase the bonding ability and strength of the vibrating plate structure 100 while keeping the product thickness basically unchanged, and improve the The continuous working ability of the vibration plate structure 100 in a high humidity environment is improved.
  • the body 1 has a first surface 14 and a second surface 15 disposed opposite to each other, and the adhesive film layer 2 includes a first adhesive film layer 21 and a second adhesive film layer.
  • the film layer 22, the first adhesive film layer 21 is provided on the first surface 14 and covers the first surface 14, and the second adhesive film layer 22 is provided on the second surface 15 and covers all the The second surface 15 is described.
  • the first adhesive film layer 21 and the second adhesive film layer 22 are both thermosetting adhesive film layers.
  • the body 1 can be optionally a plate or sheet structure, the body 1 has a first surface 14 and a second surface 15 , and the first surface 14 and the second surface 15 are located on opposite sides of the body 1 .
  • the first adhesive film layer 21 and the second adhesive film layer 22 are arranged on the first surface 14 and the second surface 15 of the main body 1 by hot pressing, respectively, the first adhesive film layer 21 completely covers the first surface 14 , the second adhesive film layer 22 covers the second surface 15 as a whole, thereby effectively improving the surface bonding strength of the opposite sides of the vibrating plate structure 100, further improving the strength of the vibrating plate structure 100, and further reducing the vibration plate structure 100. Risk of bulging and delamination due to foam expansion due to water absorption in high humidity environments.
  • the body 1 further has a side edge 16 connecting the first surface 14 and the second surface 15 ;
  • the adhesive film layer 2 further includes a third adhesive film layer 23 , the third adhesive film layer 23 covers the side edge 16 and is connected with the first adhesive film layer 21 and the second adhesive film layer 22 .
  • the third adhesive film layer 23 is a thermosetting adhesive film layer.
  • the third adhesive film layer 23 is provided at the position of the peripheral side edge 16 of the main body 1 by hot pressing and compounding, so that while the third adhesive film layer 23 covers the side edge 16, it is connected with the first adhesive film layer at the same time. 21 and the second adhesive film layer 22 are connected, so that the adhesive film layer 2 uses the first adhesive film layer 21, the second adhesive film layer 22 and the third adhesive film layer 23 to completely wrap the body 1 inside, effectively improving the vibration plate structure.
  • the surface bonding strength on the opposite sides of the 100 further enhances the strength of the vibration plate structure 100, and at the same time avoids the risk of bulging and delamination of the vibration plate structure 100 caused by the expansion of the foam due to water absorption in a high humidity environment.
  • the first adhesive film layer 21 , the third adhesive film layer 23 and the second adhesive film layer 22 are integrally formed. It can be understood that this arrangement can help to improve the strength of the vibrating plate structure 100 and at the same time avoid the risk of bulging and delamination of the vibrating plate structure 100 caused by the expansion of the foam due to water absorption in a high humidity environment.
  • the thickness of the adhesive film layer 2 should not be too thick, because too thick will affect the overall assembly of the vibration plate structure 100 . It can be understood that when the vibrating plate structure 100 is assembled by an adhesive, when the thickness of the adhesive film layer 2 exceeds the thickness of the adhesive, the bonding effect of the adhesive will be affected, and the rigidity of the adhesive film layer 2 is insufficient. The thickness is easily damaged, resulting in poor adhesion between the vibration plate structure 100 and other components of the speaker 300 , resulting in poor assembly effect.
  • the thickness of the adhesive film layer 2 is set to be less than or equal to 1000 ⁇ m.
  • the thickness of the adhesive film layer 2 should not be too thin, as it will affect the penetration of the adhesive through the adhesive film layer 2 and into the surface of the body 1 of the vibration plate structure 100. In this way, the adhesive and the adhesive film layer 2 form a common structure. The components of the valence bond are few, and the effect of increasing the adhesive force cannot be achieved.
  • the vibration plate structure 100 is applied to the loudspeaker 300 , the acoustic performance of the loudspeaker 300 will be affected. It can be understood that the adhesive effect is poor if the thickness of the adhesive film layer 2 is less than 0.001 ⁇ m.
  • the thickness of the adhesive film layer 2 can be selected as 0.001 ⁇ m, 0.005 ⁇ m, 0.1 ⁇ m, 1 ⁇ m, 5 ⁇ m, 50 ⁇ m, 100 ⁇ m, 500 ⁇ m, and 1000 ⁇ m. Further optional settings are: the thickness of the adhesive film layer 2 is 0.1 ⁇ m-50 ⁇ m.
  • the thickness of the first adhesive film layer 21 is 0.1 ⁇ m ⁇ 50 ⁇ m.
  • the thickness of the first adhesive film layer 21 is 0.1 ⁇ m, 1 ⁇ m, 5 ⁇ m, 10 ⁇ m, 15 ⁇ m, 20 ⁇ m, 25 ⁇ m, 30 ⁇ m, 35 ⁇ m, 40 ⁇ m, 45 ⁇ m, 50 ⁇ m, etc., which is not limited herein.
  • the thickness of the second adhesive film layer 22 is 0.1 ⁇ m ⁇ 50 ⁇ m.
  • the thickness of the second adhesive film layer 22 is 0.1 ⁇ m, 1 ⁇ m, 5 ⁇ m, 10 ⁇ m, 15 ⁇ m, 20 ⁇ m, 25 ⁇ m, 30 ⁇ m, 35 ⁇ m, 40 ⁇ m, 45 ⁇ m, 50 ⁇ m, etc., which is not limited herein.
  • the thickness of the third adhesive film layer 23 is 0.1 ⁇ m ⁇ 50 ⁇ m.
  • the thickness of the third adhesive film layer 23 is 0.1 ⁇ m, 1 ⁇ m, 5 ⁇ m, 10 ⁇ m, 15 ⁇ m, 20 ⁇ m, 25 ⁇ m, 30 ⁇ m, 35 ⁇ m, 40 ⁇ m, 45 ⁇ m, 50 ⁇ m, etc., which is not limited herein.
  • the body 1 includes a first material layer 11 , a foam layer 12 and a second material layer 13 that are stacked in sequence; the adhesive film layer 2 covers the A side of the first material layer 11 and/or the second material layer 13 facing away from the foam layer 12 .
  • the body 1 is composed of a multi-layer structure, and the body 1 includes a first material layer 11 , a foam layer 12 and a second material layer 13 that are stacked in sequence, that is, the first material layer 11 faces away from The side of the foam layer 12 forms the first surface 14 , and the side of the second material layer 13 facing away from the foam layer 12 forms the second surface 15 .
  • thermosetting adhesive film layer 2 by arranging the thermosetting adhesive film layer 2 on the side of the first material layer 11 and/or the second material layer 13 facing away from the foam layer 12, the adhesive film layer 2 is thermally laminated to the first material.
  • thermosetting adhesive film layer 2 has good toughness, so that after the adhesive film layer 2 is added to the body 1 of the vibration plate structure 100, the strength of the vibration plate structure 100 is effectively improved, and the adhesive film layer 2 effectively reduces the vibration plate structure 100. Risk of bulging and delamination due to foam expansion due to water absorption in high humidity environments.
  • the vibrating plate structure 100 proposed in the present invention not only does not increase the excessive weight and thickness, but also does not affect the sensitivity response of the product, and can effectively increase the bonding ability and strength of the vibrating plate structure 100 while keeping the product thickness basically unchanged, and improve the The continuous working ability of the vibration plate structure 100 in a high humidity environment is improved.
  • the adhesive film layer 2 is thermally laminated and covered on the side of the first material layer 11 facing away from the foam layer 12 , that is, the first surface 14 of the main body 1 is covered with the adhesive film layer 2 .
  • the adhesive film layer 2 is thermally laminated and covered on the side of the second material layer 13 facing away from the foam layer 12 , that is, the second surface 15 of the body 1 is covered with the adhesive film layer 2 .
  • the adhesive film layer 2 is thermally laminated and covered on the side of the first material layer 11 and/or the second material layer 13 facing away from the foam layer 12 , that is, the first surface of the body 1 14 and the second surface 15 are both covered with the adhesive film layer 2 .
  • the peripheral side 16 of the main body 1 is covered with the adhesive film layer 2 , so that the adhesive film layer 2 uses the first adhesive film layer 21 , the second adhesive film layer 22 and the third adhesive film layer 23
  • the body 1 is completely wrapped inside, which effectively improves the surface bonding strength of the opposite sides of the vibration plate structure 100, further improves the strength of the vibration plate structure 100, and at the same time avoids the vibration plate structure 100 from foaming in a high humidity environment.
  • the risk of bulging and delamination caused by body water swelling is not limited here.
  • the foam layer 12 is a PI foam or a PMI foam.
  • the first material layer 11 is one or more of Al, PI, PET, PEN, LCP, and carbon fiber composite materials.
  • the second material layer 13 is one or more of Al, PI, PET, PEN, LCP, and carbon fiber composite materials.
  • PI polyimide
  • PET Polyethylene terephthalate
  • PEN Polyethylene naphthalate two formic acid glycol ester
  • LCP International full name Liquid Crystal Polymer
  • Magnesium-aluminum alloy is an alloy material with low density, good strength, rigidity and dimensional stability.
  • Carbon fiber composite material is a kind of new material with excellent mechanical properties, which is a kind of new material with excellent mechanical properties, which has the inherent characteristics of carbon materials, and also has textile fibers.
  • the soft and processable type is a new generation of reinforcing fibers.
  • first material layer 11 , the foam layer 12 and the second material layer 13 of the main body 1 can be bonded into a laminated structure by an adhesive.
  • the adhesive is UV adhesive, UV pressure-sensitive adhesive, UV hot-melt adhesive, silica gel, cationic curing adhesive, or PUR adhesive, etc., which is not limited herein.
  • the first material layer 11 , the foam layer 12 and the second material layer 13 of the main body 1 can also be processed into a sheet or plate-like structure by means of injection molding, so as to facilitate installation or installation with other components of the speaker 300 . Connection is not limited here.
  • the thickness of the body 1 is 5 ⁇ m ⁇ 100 ⁇ m, that is, the sum of the thicknesses of the first material layer 11 , the foam layer 12 and the second material layer 13 is 5 ⁇ m ⁇ 100 ⁇ m. It can be understood that the thickness of the main body 1 should not be too thick. Too thick (more than 100 ⁇ m) will affect the acoustic performance, and it should not be too thin. Too thin will lead to excessive deformation during the bonding process between the vibration plate structure 100 and the adhesive. The acoustic performance of the loudspeaker 300 is also affected.
  • the thickness of the body 1 is 5 ⁇ m, 10 ⁇ m, 20 ⁇ m, 50 ⁇ m, 100 ⁇ m, etc., which is not limited herein.
  • the present invention also provides a preparation method of the vibration plate structure 100, and the preparation method includes the following steps:
  • thermosetting adhesive film layer 2 to at least one surface of the main body 1;
  • the main body 1 and the adhesive film layer 2 are subjected to hot pressing treatment, so that the adhesive film layer 2 is cured or semi-cured, and the vibration plate structure 100 is obtained.
  • the thermosetting adhesive film layer 2 is stored on the release paper before being attached to the main body 1 , that is, the adhesive film. It can be understood that the adhesive film is attached to the surface of the adhesive film layer 2 through the release paper, so as to protect the adhesive film layer 2 and at the same time ensure the adhesiveness of the adhesive film layer 2, and effectively prevent the adhesive film layer 2 from adhering to the surface of other impurities or debris and reduce the surface adhesion ability.
  • the release paper is also conducive to removal.
  • the adhesive film layer 2 is cured or semi-cured by hot pressing treatment, and then removed. The release paper attached to the surface of the film layer 2.
  • the adhesive film layer 2 can be obtained by manually removing the release paper on the surface of the adhesive film.
  • the release paper on the surface of the adhesive film can also be removed by a film tearing device, which is not limited herein.
  • the adhesive film layer 2 with release paper is attached to at least one surface of the main body 1, so that the adhesive film layer 2 covers the entire surface of the main body 1, and the adhesive film layer 2 is cured or After semi-curing, the release paper on the surface of the adhesive film layer 2 is removed, so that the adhesive film layer 2 contains active epoxy groups, hydroxyl groups and other groups, so as to have excellent adhesion to metals or non-metals, so that the main body 1 has Excellent surface bonding strength; at the same time, when the film layer 2 and other parts of the speaker are bonded by an adhesive, the film layer 2 and the adhesive will have the phenomenon of mutual diffusion of glue molecules, so that there is a middle containing two molecules on the bonding surface.
  • the adhesive film layer 2 has good toughness, so that after the adhesive film layer 2 is added to the main body 1, the strength of the main body 1 is effectively improved, and the adhesive film layer 2 effectively reduces the occurrence of water absorption by the foam in the high humidity environment of the main body 1. Risk of bulging and delamination due to swelling.
  • the adhesive film layer 2 can be attached to any surface of the main body 1 , or the adhesive film layer 2 can be attached to the two opposite surfaces of the main body 1 , or the two opposite surfaces of the main body 1 and the peripheral side 16 can be attached.
  • Adhesive film layer 2 thereby effectively improving the surface bonding strength of the opposite sides of the body 1, further improving the strength of the body 1, and at the same time avoiding the bulging and delamination of the body 1 caused by the water absorption and expansion of the foam in a high-humidity environment. Risk is not limited here.
  • the adhesive film layer 2 attached to the surface of the main body 1 can be cured by means of heating, pressure, etc., so that the adhesive film layer 2 can be cured. 2.
  • the surface of the main body 1 is in a cured or semi-cured state, so as to obtain the final vibration plate structure 100 .
  • the curing method of the adhesive film layer 2 includes natural volatilization, heating, or ultraviolet light curing.
  • the natural volatilization time is 1 ⁇ 20min.
  • the natural volatilization time is selected according to the thickness and volume of the adhesive film layer 2. The thicker the thickness and the larger the volume, the longer the natural volatilization time.
  • the heating curing method is adopted, the heating temperature is 50 ⁇ 80°C, and the heating time is 1 ⁇ 5min.
  • the heating temperature and time are selected according to the thickness and volume of the adhesive film layer 2. The higher the temperature, the longer the heating time.
  • the UV curing time is 1-20S.
  • the curing time is also selected according to the thickness of the adhesive film layer 2. The thicker the thickness, the longer the UV irradiation time.
  • the main body 1 and the adhesive film layer 2 are subjected to hot pressing treatment, so that the adhesive film layer 2 is in a cured or semi-cured state.
  • thermosetting adhesive film layer 2 on the surface of the main body 1, because the adhesive film layer 2 contains different chemically active functional groups, one end can react with the surface of the main body 1 to form a chemical bond, and the other end can react with the adhesive agent Covalent bonds are formed, so that the bonding strength between the adhesive and other components of the speaker 300 can be higher, thereby improving the bonding stability between the vibration plate structure 100 and other components of the speaker 300, so that the surface of the vibration plate structure 100 is improved.
  • the bonding strength of the speaker 300 is improved by 40% to 300%, thereby improving the reliability performance of the speaker 300 .
  • the vibration plate structure 100 of the present invention does not affect the sensitivity response of the loudspeaker 300 without increasing excessive weight and thickness, and increases the bonding of the vibration plate structure 100 while ensuring that the thickness of the loudspeaker 300 is basically unchanged. ability, increase the strength of the vibration plate structure 100, and improve the continuous working ability of the vibration plate structure 100 in a high humidity environment.
  • the surface-cured or semi-cured adhesive film layer 2 of the body 1 of the vibration plate structure 100 has strong cohesion, high bonding strength, and small curing shrinkage.
  • the epoxy resin curing system contains highly reactive epoxy groups, hydroxyl groups and other groups. The group has excellent adhesion to metal or non-metal, and has excellent surface bonding strength. Compared with the direct use of adhesive on the surface of the main body 1 to bond with other components, when the epoxy resin film layer 2 is bonded with other components, the glue molecules on the surface of the adhesive film layer 2 and the adhesive on the surface of the component diffuse each other, so that the bonding surface exists.
  • the epoxy resin film layer 2 has good toughness, and some special materials such as the carbon fiber composite body 1
  • the surface of the carbon fiber bundle increases the ring After the oxygen resin film layer 2, the strength of the connected composite body 1 increases, the two carbon fiber bundles are not easily cracked, and the carbon fiber bundles have no peeling problem; further, the foam layer of the inner layer of the body 1 will not be directly exposed to the external environment. , to reduce the risk of bulging and delamination caused by foam expansion due to water absorption in high humidity environments.
  • the present invention further provides a speaker 300 , the speaker 300 includes a casing, a magnetic circuit system and a vibration system 200 accommodated in the casing, and the vibration system 200 includes a diaphragm 210 and the above-mentioned
  • the vibration plate structure 100 is fixed at the central position of the diaphragm 210 .
  • the specific structure of the vibration plate structure 100 refers to the foregoing embodiments. Since the speaker 300 adopts all the technical solutions of the foregoing embodiments, it has at least all the beneficial effects brought by the technical solutions of the foregoing embodiments, which will not be repeated here. One more elaboration.
  • the casing is used to install, fix and protect the magnetic circuit system, the vibration system 200 and other components of the speaker 300, and the structure of the casing may have structures such as a casing with a cavity, a casing, a mounting shell, a mounting frame, and the like. Not limited.
  • the magnetic circuit system is arranged in the cavity of the casing, and the magnetic circuit system and the side wall of the cavity are arranged at intervals. It can be understood that the casing is used to fix and install the magnetic circuit system, and a support arm is protruded from the periphery of the casing and is connected with the magnetic circuit system.
  • the casing is a metal part
  • the magnetic circuit system and the casing are fixed by bonding.
  • the housing is plastic injection molding
  • the side magnetic conductive plate of the magnetic circuit system is firstly injected into the housing as an insert, and then other parts are glued and fixed.
  • the installation of the magnetic circuit system and the vibration system 200 is facilitated, and the installation convenience of the speaker 100 is improved.
  • the magnetic circuit system is provided with a magnetic gap
  • the vibration system 200 includes a voice coil 220 suspended in the magnetic gap, so that the voice coil 220 is connected to the external circuit, and the voice coil 220 is used to transmit electrical energy to the magnetic circuit
  • the magnetic gap of the system enables the magnetic field generated by the magnetic circuit system to convert electrical energy into mechanical energy, thereby causing the voice coil 220 to vibrate, and driving the diaphragm 210 of the vibration system 200 to vibrate and produce sound, further converting mechanical energy into sound energy.
  • the voice coil 220 disposed in the magnetic gap receives the externally changing AC signal, it is driven by the magnetic field force of the magnetic circuit system to reciprocate and cut the magnetic lines of force to drive the diaphragm 210 of the vibration system 200 to vibrate and emit sound.
  • the adhesive film layer 2 of the vibration plate structure 100 is connected to the vibration film 210 through an adhesive 230 . It can be understood that the adhesive film layer 2 of the vibrating plate structure 100 is connected to the vibrating membrane 210 through the adhesive 230 , so as to further improve the bonding strength and bonding stability between the vibrating plate structure 100 and the vibrating membrane 210 .
  • the adhesive 230 is UV glue. It is understandable that UV glue is also called shadowless glue, photosensitive glue, and ultraviolet curing glue. Shadowless glue is a kind of adhesive that must be cured by ultraviolet light. It is used as a sizing material for paints, coatings, inks, etc. UV is the abbreviation of English Ultraviolet Rays, that is, ultraviolet rays. Ultraviolet (UV) is invisible to the naked eye and is a period of electromagnetic radiation other than visible light, with a wavelength in the range of 10 to 400 nm.
  • the curing principle of shadowless glue is that the photoinitiator (or photosensitizer) in the UV curing material absorbs ultraviolet light under the irradiation of ultraviolet light and generates active free radicals or cations, which initiates monomer polymerization and cross-linking chemical reactions, so that the adhesive can be Converts from liquid to solid in seconds.
  • UV pressure sensitive adhesive is a one-component UV curing adhesive, also known as pressure sensitive adhesive.
  • the pressure sensitive adhesive has fast curing speed, very high transparency after curing, strong adhesion, yellowing resistance, water resistance and weather resistance.
  • UV hot-melt adhesive refers to ultraviolet light hot-melt adhesive.
  • Hot-melt adhesive (English name: Hot Glue) is a plastic adhesive. Its physical state changes with temperature changes within a certain temperature range, and its chemical properties do not It is non-toxic and tasteless, and is an environmentally friendly chemical product. Because the product itself is solid, it is easy to package, transport, store, solvent-free, pollution-free, non-toxic; as well as simple production process, high added value, high bonding strength, fast speed and other advantages.
  • the diaphragm 210 is disposed opposite to the magnetic circuit system.
  • the diaphragm 210 includes an inner ring portion 211 , a ring portion 212 arranged around the inner ring portion 211 , and a fixing portion 213 arranged around the ring portion 212 .
  • the fixing portion 213 of the diaphragm 210 is sandwiched between the housing and the front cover. In between, the connection stability between the fixing portion 213 and the housing can be improved.
  • the fixing portion 213 can also be formed by extending downward from the outer edge of the folded ring portion 212 , so that the fixing portion 213 of the diaphragm 210 can be fixedly connected to the outer side wall of the housing, so that the fixing can be improved.
  • the stability of the connection between the part 213 and the housing can improve the waterproof performance, and also help to increase the effective vibration area of the diaphragm 210, which is not limited herein.
  • the ring portion 212 of the diaphragm 210 can be a convex ring structure or a concave ring structure, that is, the cross-street surface of the ring portion 212 has a semicircular structure that is raised upwards or a semicircular structure that is recessed downwards. It is convenient for the vibrating membrane 210 to vibrate, thereby realizing sound production.
  • the inner ring portion 211 of the diaphragm 210 has opposite upper and lower surfaces.
  • the diaphragm structure 100 is disposed on the side of the diaphragm 210 facing the voice coil 220 . That is, the first adhesive film layer 21 of the vibrating plate structure 100 is bonded and fixed to the lower surface of the inner ring portion 211 of the vibrating film 210 through the adhesive 230 .
  • the vibrating plate structure 100 is disposed on the side of the vibrating membrane 210 facing away from the voice coil 220 , that is, the second adhesive film layer 22 of the vibrating plate structure 100 passes through
  • the adhesive 230 is bonded and fixed to the upper surface of the inner ring portion 211 of the diaphragm 210 .
  • the vibration system 200 further includes a voice coil 220 , and the adhesive film layer 2 of the vibration plate structure 100 is connected to the voice coil 220 through an adhesive 230 .
  • the adhesive film layer 2 of the vibration plate structure 100 is connected to the voice coil 220 through the adhesive 230 , thereby further improving the bonding strength and bonding stability between the vibration plate structure 100 and the voice coil 220 .
  • the adhesive 230 is UV glue.
  • the vibrating plate structure 100 is disposed on the side of the vibrating membrane 210 facing the voice coil 220 . At this time, the vibrating plate structure 100 is sandwiched between the inner ring portion 211 of the vibrating membrane 210 . Between the lower surface and the voice coil 220 , that is, the first adhesive film layer 21 of the vibrating plate structure 100 is bonded and fixed to the lower surface of the inner ring portion 211 of the diaphragm 210 through the adhesive 230 , and the second adhesive film layer 22 of the vibrating plate structure 100 is fixed. The voice coil 220 is bonded and fixed by the adhesive 230 .
  • the magnetic circuit system includes a magnetic conductive yoke, a center magnetic circuit portion and a side magnetic circuit portion disposed on the magnetic conductive yoke, a magnetic gap is formed between the central magnetic circuit portion and the side magnetic circuit portion, and the voice coil 220 is far away from One end of the diaphragm 210 is suspended in the magnetic gap of the magnetic circuit system.
  • the magnetic conductive yoke is fixed on the end of the casing away from the front cover, the central magnetic circuit portion and the side magnetic circuit portion are arranged on the side of the magnetic conductive yoke facing the vibration plate structure 100 , and the side magnetic circuit portion surrounds the central magnetic circuit A magnetic gap is formed between it and the central magnetic circuit portion, so that the voice coil 220 is conveniently suspended in the magnetic gap.
  • the side magnetic circuit portion may be arranged in a ring shape, or may be formed by a plurality of side magnetic circuit portions arranged at intervals, which is not limited herein.
  • the central magnetic circuit portion includes a central magnet and a central magnetic conductive plate, and the central magnet is sandwiched between the magnetic conductive yoke and the central magnetic conductive plate;
  • the side magnetic circuit portion includes a side magnet and a side magnetic conductive plate, and the side magnet The utility model is clamped between the magnetic conducting yoke and the side magnetic conducting plate, and the side magnetic conducting plate is connected with the side wall of the casing through the fixing section.
  • the central magnet and the central magnetic conductive plate have the same structural outline, and the central magnet and the central magnetic conductive plate can be selected as plate-like structures.
  • the structure outline of the side magnet and the side magnetic conductive plate is the same, and the optional annular structure of the side magnet and the side magnetic conductive plate.
  • the side magnetic conductive plate is connected to the side wall of the casing through the fixing section, and such arrangement is beneficial to simplify the processing technology of the side magnetic conductive plate and the casing.
  • the material of the casing and the side magnetic conductive plate are both metal materials, which is beneficial to improve the heat conduction and heat dissipation effect.
  • the housing and the plurality of side magnetic conducting plates are integrally formed.
  • the present invention also provides an electronic terminal, the electronic terminal includes a device casing and the above-mentioned speaker 300, the device casing is provided with a cavity, and the speaker 300 is provided in the cavity.
  • the specific structure of the speaker 300 refers to the foregoing embodiments. Since the electronic terminal adopts all the technical solutions of the foregoing embodiments, it has at least all the beneficial effects brought by the technical solutions of the foregoing embodiments, which will not be repeated here. .
  • the electronic terminal may be an electronic device, such as a mobile phone, a stereo, a computer, an earphone, a watch, a TV, or a tablet computer, etc., which is not limited herein.

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Abstract

本发明公开一种振动板结构、振动板结构的制备方法、扬声器及电子终端，所述振动板结构包括本体和热固性的胶膜层，所述胶膜层热压复合于所述本体的至少一表面。本发明旨在提供一种不增加过多重量和厚度的振动板结构，该振动板结构不影响产品灵敏度响应，可保持产品厚度基本不变的情况下，有效增加振动板结构的粘结能力和强度，并改善了振动板结构在高湿度环境下的持续工作能力。

Description

振动板结构、振动板结构的制备方法、扬声器及电子终端 技术领域
本发明涉及声电产品技术领域，特别涉及一种振动板结构、振动板结构的制备方法以及应用振动板结构的扬声器和电子终端。
背景技术
扬声器是便携式电子设备的重要声学部件，用于完成电信号与声音信号之间的转换，是一种能量转换器件。随着手机等电子设备的小型化发展，相应的，扬声器的尺寸设计也越来越具有挑战性。
相关技术中，扬声器的振动板采用复合型振动板，而复合后的振动板外层材料表面存在油污等杂质时，导致表面粘结性差，使得振动板与扬声器的振膜、音圈等粘结后粘结力较弱，无法满足可靠性粘结力要求，存在扬声器跌落可靠性实验后粘结失效问题；同时，特殊表面处理存在一定时效性，且成本较高。
发明内容
本发明的主要目的是提供一种振动板结构、振动板结构的制备方法、扬声器及电子终端，旨在提供一种不增加过多重量和厚度的振动板结构，该振动板结构不影响产品灵敏度响应，可保持产品厚度基本不变的情况下，有效增加振动板结构的粘结能力和强度，并改善了振动板结构在高湿度环境下的持续工作能力。
为实现上述目的，本发明提出的振动板结构，应用于扬声器，所述振动板结构包括：
本体；和
热固性的胶膜层，所述胶膜层热压复合于所述本体的至少一表面。
在一实施例中，所述胶膜层的材质包括丙烯酸树脂、环氧树脂、硅胶树脂、聚氨酯树脂中的一种或多种。
在一实施例中，所述本体具有相对设置的第一表面和第二表面，所述胶膜层包括第一胶膜层和第二胶膜层，所述第一胶膜层设于所述第一表面，并覆盖所述第一表面，所述第二胶膜层设于所述第二表面，并覆盖所述第二表面。
在一实施例中，所述本体还具有连接所述第一表面和所述第二表面的侧边；
所述胶膜层还包括第三胶膜层，所述第三胶膜层覆盖于所述侧边，并与所述第一胶膜层和所述第二胶膜层连接。
在一实施例中，所述第一胶膜层、所述第三胶膜层及所述第二胶膜层为一体成型结构；
且/或，所述第一胶膜层的厚度为0.1μm-50μm；
且/或，所述第二胶膜层的厚度为0.1μm-50μm；
且/或，所述第三胶膜层的厚度为0.1μm-50μm。
在一实施例中，所述本体包括依次层叠设置的第一材料层、发泡体层及第二材料层；
所述胶膜层覆盖于所述第一材料层和/或所述第二材料层背向所述发泡体层的一侧。
在一实施例中，所述发泡体层为PI发泡体或PMI发泡体；
且/或，所述第一材料层为Al、PI、PET、PEN、LCP、和碳纤维复合材料中的一种或多种；
且/或，所述第二材料层为Al、PI、PET、PEN、LCP、和碳纤维复合材料中的一种或多种。
本发明还提出一种上述所述的振动板结构的制备方法，所述制备方法包括以下步骤：
将热固性的胶膜层贴附于本体的至少一表面；
对所述本体和所述胶膜层进行热压处理，以使所述胶膜层固化或半固化，得到振动板结构。
本发明还提出一种扬声器，包括外壳以及收容于所述外壳内的磁路系统和振动系统，所述振动系统包括振膜和上述所述的振动板结构，所述振动板结构固定于所述振膜的中央位置。
在一实施例中，所述振动板结构的胶膜层通过胶粘剂与所述振膜连接；
且/或，所述振动系统还包括音圈，所述振动板结构的胶膜层通过胶粘剂与所述音圈连接。
在一实施例中，所述胶粘剂为UV胶。
本发明还提出一种电子终端，包括设备壳体和上述所述的扬声器，所述设备壳体设有腔体，所述扬声器设于所述腔体内。
本发明技术方案的振动板结构通过在本体的至少一表面设置热固性的胶膜层，使得胶膜层热压复合于本体的表面，如此利用热固性的胶膜层中含有活性大的环氧基、羟基等基团，从而对金属或非金属有优良的附着力，使得振动板结构具有优异的表面粘接强度；同时，该胶膜层与扬声器的其他部件通过胶粘剂粘结时，胶膜层与胶粘剂发生胶水分子相互扩散现象，使得粘结面存在一个含有两种分子的中间相，从而提升粘结性能，单位面积粘结力更大。进一步地，该热固性的胶膜层韧性好，使得振动板结构的本体增加胶膜层后，有效提高振动板结构的强度，且胶膜层有效减小了振动板结构在高湿度环境中出现因发泡体吸水膨胀导致的鼓包分层风险。本发明提出的振动板结构不仅不增加过多重量和厚度，且不影响产品灵敏度响应，可保持产品厚度基本不变的情况下，有效增加振动板结构的粘结能力和强度，并改善了振动板结构在高湿度环境下的持续工作能力。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明一实施例中振动板结构的结构示意图；
图2为本发明一实施例中振动板结构的剖面示意图；
图3为图2中A处的局部放大图；
图4为本发明另一实施例中振动板结构的剖面示意图；
图5为图4中B处的局部放大图；
图6为本发明一实施例中扬声器的部分剖面示意图；
图7为图6中C处的局部放大图；
图8为本发明另一实施例中扬声器的部分剖面示意图；
图9为图8中D处的局部放大图。
附图标号说明：
标号 名称 标号 名称
100 振动板结构 22 第二胶膜层
1 本体 23 第三胶膜层
11 第一材料层 200 振动系统
12 发泡体层 210 振膜
13 第二材料层 211 内环部
14 第一表面 212 折环部
15 第二表面 213 固定部
16 侧边 220 音圈
2 胶膜层 230 胶粘剂
21 第一胶膜层 300 扬声器
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，本发明实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
同时，全文中出现的“和/或”或“且/或”的含义为，包括三个方案，以“A和 /或B”为例，包括A方案，或B方案，或A和B同时满足的方案。
另外，在本发明中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
扬声器是便携式电子设备的重要声学部件，用于完成电信号与声音信号之间的转换，是一种能量转换器件。随着手机等电子设备的小型化发展，相应的，扬声器的尺寸设计也越来越具有挑战性。现有扬声器的振动板通常采用复合型振动板，而复合后的振动板外层材料表面存在油污等杂质时，导致表面粘结性差，使得振动板与扬声器的振膜、音圈等粘结后粘结力较弱，无法满足可靠性粘结力要求，存在扬声器跌落可靠性实验后粘结失效问题；同时，特殊表面处理存在一定时效性，且成本较高。
同时，某些材料如碳纤维复合振动板其材料层中两根碳纤维束交接处结合强度较低，易断裂、剥离后可能露出中间发泡体层。复合后的振动板侧面发泡体层直接暴露在外界环境，或碳纤维复合振动板其碳纤维层断裂剥离或因制作过程中碳纤维层缺陷导致发泡体层露出后，因发泡体吸水性强，在湿度较大的环境中工作会吸水膨胀最终导致振动板分层鼓包。
基于上述构思和问题，本发明提出一种振动板结构100，该振动板结构100不仅不增加过多重量和厚度，且不影响产品灵敏度响应，可保持产品厚度基本不变的情况下，有效增加振动板结构100的粘结能力和强度，并改善了振动板结构100在高湿度环境下的持续工作能力。
在本实施例中，该振动板结构100应用于扬声器300中，可有效提升扬声器300的可靠性性能。可以理解的，扬声器300应用于电子终端中，电子终端可以是电子设备，例如手机、音响、电脑、耳机、手表、电视或平板电脑等，在此不做限定。
请结合参照图1至图5、图7和图9所示，在本发明实施例中，该振动板结构100包括本体1和热固性的胶膜层2，所述胶膜层2热压复合于所述本体1的至少一表面。
在本实施例中，振动板结构100的本体1是振动板结构100的主体结构，本体1可以单层结构，也可以是多层结构，在此不做限定。可以理解的，本体1为单层结构时，本体1的材质可以是Al、PI、PET、PEN、LCP、和碳纤维复合材料中的一种或多种。
其中，PI(聚酰亚胺(Polyimide))可分为均苯型聚酰亚胺、可溶性聚酰亚胺、聚酰胺-酰亚胺(PAI)和聚醚亚胺(PEI)四类。PET(聚对苯二甲酸乙二醇酯(Polyethylene terephthalate))，为树脂类，可以分为APET、RPET、及PETG。PEN(聚萘二甲酸乙二醇酯(Polyethylene naphthalate two formic acid glycol ester))，萘环结构使PEN比PET具有更高的物理机械性能、气体阻隔性能、化学稳定性及耐热、耐紫外线、耐辐射等性能。LCP(英文全称Liquid Crystal Polymer)具有高强度、高刚性、耐高温、电绝缘性等十分优良。镁铝合金是一种合金材料，密度低，强度好、刚性和尺寸稳定性。碳纤维复合材料是由有机纤维经过一系列热处理转化而成，含碳量高于90％的无机高性能纤维，是一种力学性能优异的新材料，具有碳材料的固有本性特征，又兼备纺织纤维的柔软可加工型，是新一代增强纤维。
可以理解的，本体1可通过加工注塑呈片材或板状结构，从而方便与扬声器300的其他部件进行安装或连接。在本实施例中，通过在本体1的表面设置热固性的胶膜层2，使得热固性的胶膜层2覆盖于本体1的至少一表面，从而利用热固性的胶膜层2有效提升振动板结构100与扬声器300的其他部件之间的粘结力。
在一实施例中，所述胶膜层2的材质包括丙烯酸树脂、环氧树脂、硅胶树脂、聚氨酯树脂中的一种或多种。
可以理解的，胶膜层2的材质可选为丙烯酸树脂、环氧树脂、硅胶树脂、聚氨酯树脂中的一种或多种。胶膜层2可以为上述的一种材料单独构成，也可以为两种及以上的材料的混合，在此不做限定。
其中，丙烯酸树脂是丙烯酸、甲基丙烯酸及其衍生物聚合物的总称。丙烯酸树脂涂料就是以(甲基)丙烯酸酯、苯乙烯为主体，同其他丙烯酸酯共聚所得丙烯酸树脂制得的热塑性或热固性树脂涂料。热塑性丙烯酸树脂在成膜过程中不发生进一步交联，因此它的相对分子量较大，具有良好的保光保色性、耐水耐化学性、干燥快、施工方便，易于施工重涂和返工。热固性丙烯酸树 脂是指在结构中带有一定的官能团，在制漆时通过和加入的氨基树脂、环氧树脂、聚氨酯等中的官能团反应形成网状结构，热固性树脂一般相对分子量较低。热固性丙烯酸涂料有优异的丰满度、光泽、硬度、耐溶剂性、耐候性、在高温烘烤时不变色、不返黄。
环氧树脂是指分子中含有两个以上环氧基团的一类聚合物的总称。它是环氧氯丙烷与双酚A或多元醇的缩聚产物。由于环氧基的化学活性，可用多种含有活泼氢的化合物使其开环，固化交联生成网状结构，因此它是一种热固性树脂。环氧树脂软化剂应用特性如下：形式多样，各种树脂、固化剂、改性剂体系几乎可以适应各种应用对形式提出的要求，其范围可以从极低的粘度到高熔点固体；固化方便，选用各种不同的固化剂，环氧树脂体系几乎可以在0～180℃温度范围内固化；粘附力强，环氧树脂分子链中固有的极性羟基和醚键的存在，使其对各种物质具有很高的粘附力。环氧树脂固化时的收缩性低，产生的内应力小，这也有助于提高粘附强度；收缩性低，环氧树脂和所用的固化剂的反应是通过直接加成反应或树脂分子中环氧基的开环聚合反应来进行的，没有水或其它挥发性副产物放出。它们和不饱和聚酯树脂、酚醛树脂相比，在固化过程中显示出很低的收缩性(小于2％)；力学性能，固化后的环氧树脂体系具有优良的力学性能。化学稳定性，通常，固化后的环氧树脂体系具有优良的耐碱性、耐酸性和耐溶剂性。像固化环氧体系的其它性能一样，化学稳定性也取决于所选用的树脂和固化剂。适当地选用环氧树脂和固化剂，可以使其具有特殊的化学稳定性能。尺寸稳定性，上述的许多性能的综合，使环氧树脂体系具有突出的尺寸稳定性和耐久性。
聚氨酯树脂是聚氨基甲酸酯(polyurethane)的简称，它是一种高分子材料。氨基甲酸酯和多元醇进行酯交换反应，得到多元醇氨基甲酸酯类化合物，其结构类似于多酰胺。多元醇的氨基甲酸酯和醛进行交联反应生成具有聚氨基酯结构的聚合物，用作涂料、胶黏剂等。
本发明的振动板结构100通过在本体1的至少一表面通过热压复合方式设置热固性的胶膜层2，使得胶膜层2覆盖本体1的表面，如此利用由丙烯酸树脂、环氧树脂、硅胶树脂、聚氨酯树脂中的一种或多种构成的胶膜层2中含有活性大的环氧基、羟基等基团，从而对金属或非金属有优良的附着力，使得振动板结构100具有优异的表面粘接强度；同时，该胶膜层2与扬声器 的其他部件通过胶粘剂粘结时，胶膜层2与胶粘剂发生胶水分子相互扩散现象，使得粘结面存在一个含有两种分子的中间相，从而提升粘结性能，单位面积粘结力更大。进一步地，该热固性的胶膜层2韧性好，使得振动板结构100的本体1增加胶膜层2后，有效提高振动板结构100的强度，且胶膜层2有效减小了振动板结构100在高湿度环境中出现因发泡体吸水膨胀导致的鼓包分层风险。本发明提出的振动板结构100不仅不增加过多重量和厚度，且不影响产品灵敏度响应，可保持产品厚度基本不变的情况下，有效增加振动板结构100的粘结能力和强度，并改善了振动板结构100在高湿度环境下的持续工作能力。
在一实施例中，如图2至图5所示，所述本体1具有相对设置的第一表面14和第二表面15，所述胶膜层2包括第一胶膜层21和第二胶膜层22，所述第一胶膜层21设于所述第一表面14，并覆盖所述第一表面14，所述第二胶膜层22设于所述第二表面15，并覆盖所述第二表面15。可选地，第一胶膜层21和第二胶膜层22均为热固性的胶膜层。
在本实施例中，本体1可选为板状或片状结构，本体1具有第一表面14和第二表面15，第一表面14和第二表面15位于本体1相背离的两侧。通过在本体1的第一表面14和第二表面15分别通过热压复合方式设置第一胶膜层21和第二胶膜层22，使得第一胶膜层21整体覆盖所述第一表面14，第二胶膜层22整体覆盖第二表面15，从而有效提高振动板结构100相对两侧的表面粘接强度，同时进一步提升了振动板结构100的强度，进一步减小了振动板结构100在高湿度环境中出现因发泡体吸水膨胀导致的鼓包分层风险。
在一实施例中，如图5所示，所述本体1还具有连接所述第一表面14和所述第二表面15的侧边16；所述胶膜层2还包括第三胶膜层23，所述第三胶膜层23覆盖于所述侧边16，并与所述第一胶膜层21和所述第二胶膜层22连接。可选地，第三胶膜层23为热固性的胶膜层。
在本实施例中，通过在本体1的周缘侧边16位置通过热压复合方式设置第三胶膜层23，使得第三胶膜层23覆盖于侧边16的同时，与第一胶膜层21和第二胶膜层22连接，从而使得胶膜层2利用第一胶膜层21、第二胶膜层22及第三胶膜层23完全将本体1包裹在里面，有效提高振动板结构100相对两侧的表面粘接强度，进一步提升了振动板结构100的强度，且同时避免了 振动板结构100在高湿度环境中出现因发泡体吸水膨胀导致的鼓包分层风险。
在一实施例中，如图5所示，所述第一胶膜层21、所述第三胶膜层23及所述第二胶膜层22为一体成型结构。可以理解的，如此设置可有利于提高振动板结构100的强度的同时，避免了振动板结构100在高湿度环境中出现因发泡体吸水膨胀导致的鼓包分层风险。
在本实施例中，胶膜层2的厚度不宜过厚，过厚会影响振动板结构100整体的装配。可以理解的，在振动板结构100通过胶黏剂装配时，胶膜层2的厚度超过胶黏剂的厚度时，会影响胶黏剂的粘接效果，且胶膜层2的刚性不足，过厚容易破损，导致振动板结构100与扬声器300的其他部件之间的粘接效果较差，从而使得装配效果较差。
可选地，胶膜层2的厚度设置为小于等于1000μm。胶膜层2的厚度也不宜过薄，过薄会影响使得胶黏剂渗透过胶膜层2进入到振动板结构100的本体1表面，这样一来，胶黏剂与胶膜层2形成共价键的成分较少，达不到增加粘结力的效果，在振动板结构100应用于扬声器300中会影响扬声器300的声学性能。可以理解的，胶膜层2的厚度小于0.001μm粘接效果较差。
在本实施例中，胶膜层2的厚度可选为0.001μm、0.005μm、0.1μm、1μm、5μm、50μm、100μm、500μm、1000μm。进一步可选设置为：胶膜层2厚度为0.1μm-50μm。
在本实施例中，如图3和图5所示，所述第一胶膜层21的厚度为0.1μm～50μm。可选地，第一胶膜层21的厚度为0.1μm、1μm、5μm、10μm、15μm、20μm、25μm、30μm、35μm、40μm、45μm、50μm等，在此不做限定。
在本实施例中，如图3和图5所示，所述第二胶膜层22的厚度为0.1μm～50μm。可选地，第二胶膜层22的厚度为0.1μm、1μm、5μm、10μm、15μm、20μm、25μm、30μm、35μm、40μm、45μm、50μm等，在此不做限定。
在本实施例中，如图5所示，所述第三胶膜层23的厚度为0.1μm～50μm。可选地，第三胶膜层23的厚度为0.1μm、1μm、5μm、10μm、15μm、20μm、25μm、30μm、35μm、40μm、45μm、50μm等，在此不做限定。
在一实施例中，如图3和图5所示，所述本体1包括依次层叠设置的第一材料层11、发泡体层12及第二材料层13；所述胶膜层2覆盖于所述第一材料层11和/或所述第二材料层13背向所述发泡体层12的一侧。
在本实施例中，本体1由多层结构复合而成，本体1包括依次层叠设置的第一材料层11、发泡体层12及第二材料层13，也即第一材料层11背向发泡体层12的一侧形成第一表面14，第二材料层13背向发泡体层12的一侧形成第二表面15。
可以理解的，通过在第一材料层11和/或第二材料层13背向发泡体层12的一侧设置热固性的胶膜层2，从而使得胶膜层2热压复合于第一材料层11和/或第二材料层13背向发泡体层12的一侧，利用热固性的胶膜层2中含有活性大的环氧基、羟基等基团，从而对金属或非金属有优良的附着力，使得振动板结构100具有优异的表面粘接强度；同时，该胶膜层2与扬声器的其他部件例如振膜、音圈等通过胶粘剂粘结时，胶膜层2与胶粘剂发生胶水分子相互扩散现象，使得粘结面存在一个含有两种分子的中间相，从而提升粘结性能，单位面积粘结力更大。进一步地，该热固性的胶膜层2韧性好，使得振动板结构100的本体1增加胶膜层2后，有效提高振动板结构100的强度，且胶膜层2有效减小了振动板结构100在高湿度环境中出现因发泡体吸水膨胀导致的鼓包分层风险。本发明提出的振动板结构100不仅不增加过多重量和厚度，且不影响产品灵敏度响应，可保持产品厚度基本不变的情况下，有效增加振动板结构100的粘结能力和强度，并改善了振动板结构100在高湿度环境下的持续工作能力。
在一实施例中，胶膜层2热压复合并覆盖于第一材料层11背向所述发泡体层12的一侧，也即，本体1的第一表面14覆盖有胶膜层2。在另一实施例中，胶膜层2热压复合并覆盖于第二材料层13背向发泡体层12的一侧，也即，本体1的第二表面15覆盖有胶膜层2。在又一实施例中，胶膜层2热压复合并覆盖于第一材料层11和或第二材料层13背向所述发泡体层12的一侧，也即本体1的第一表面14和第二表面15均覆盖有胶膜层2。
当然，在其他实施例中，本体1的周缘侧边16页覆盖有胶膜层2，从而使得胶膜层2利用第一胶膜层21、第二胶膜层22及第三胶膜层23完全将本体1包裹在里面，有效提高振动板结构100相对两侧的表面粘接强度，进一步提升了振动板结构100的强度，且同时避免了振动板结构100在高湿度环境中出现因发泡体吸水膨胀导致的鼓包分层风险，在此不做限定。
在一实施例中，所述发泡体层12为PI发泡体或PMI发泡体。所述第一 材料层11为Al、PI、PET、PEN、LCP、和碳纤维复合材料中的一种或多种。所述第二材料层13为Al、PI、PET、PEN、LCP、和碳纤维复合材料中的一种或多种。
其中，PI(聚酰亚胺(Polyimide))可分为均苯型聚酰亚胺、可溶性聚酰亚胺、聚酰胺-酰亚胺(PAI)和聚醚亚胺(PEI)四类。PET(聚对苯二甲酸乙二醇酯(Polyethylene terephthalate))，为树脂类，可以分为APET、RPET、及PETG。PEN(聚萘二甲酸乙二醇酯(Polyethylene naphthalate two formic acid glycol ester))，萘环结构使PEN比PET具有更高的物理机械性能、气体阻隔性能、化学稳定性及耐热、耐紫外线、耐辐射等性能。LCP(英文全称Liquid Crystal Polymer)具有高强度、高刚性、耐高温、电绝缘性等十分优良。镁铝合金是一种合金材料，密度低，强度好、刚性和尺寸稳定性。碳纤维复合材料是由有机纤维经过一系列热处理转化而成，含碳量高于90％的无机高性能纤维，是一种力学性能优异的新材料，具有碳材料的固有本性特征，又兼备纺织纤维的柔软可加工型，是新一代增强纤维。
可以理解的，本体1的第一材料层11、发泡体层12及第二材料层13可通过胶粘剂粘结为层叠结构。可选地，胶粘剂为UV胶、UV压敏胶、UV热熔胶、硅胶、阳离子固化胶、或PUR胶等，在此不做限定。当然，本体1的第一材料层11、发泡体层12及第二材料层13也可采用加工注塑的方式，加工成片材或板状结构，从而方便与扬声器300的其他部件进行安装或连接，在此不做限定。
在本实施例中，本体1的厚度为5μm～100μm，也即第一材料层11、发泡体层12及第二材料层13三层的厚度之和为5μm～100μm。可以理解的，本体1的厚度不宜过厚，过厚(超过100μm)会影响声学性能，也不宜过薄，过薄会导致振动板结构100与胶黏剂粘结的过程中形变量过大，也会影响扬声器300的声学性能。可选地，本体1的厚度为5μm、10μm、20μm、50μm、100μm等，在此不做限定。
本发明还提出一种振动板结构100的制备方法，所述制备方法包括以下步骤：
将热固性的胶膜层2贴附于本体1的至少一表面；
对所述本体1和所述胶膜层2进行热压处理，以使所述胶膜层2固化或 半固化，得到振动板结构100。
在本实施例中，热固性的胶膜层2在贴附于本体1前储存于离型纸上，也即胶膜。可以理解的，胶膜通过离型纸贴附在胶膜层2的表面，从而保护胶膜层2的同时，确保胶膜层2的粘性，有效避免胶膜层2因表面粘附其他杂质或杂物而降低表面粘结能力。同时，离型纸还有利于去除，通常情况下，在将热固性的胶膜层2贴附于本体1的至少一表面之后，通过热压处理使胶膜层2固化或半固化后，然后去除胶膜层2表面贴附的离型纸。
可以理解的，可采用人工手动去除胶膜表面的离型纸得到胶膜层2。当然，在其他实施例中，也可通过撕膜设备将胶膜表面的离型纸去除等，在此不做限定。
在本实施例中，将带离型纸的胶膜层2贴附于本体1的至少一表面，使得胶膜层2覆盖在本体1的整个表面，通过热压处理使胶膜层2固化或半固化后去除胶膜层2表面的离型纸，从而利用胶膜层2中含有活性大的环氧基、羟基等基团，从而对金属或非金属有优良的附着力，使得本体1具有优异的表面粘接强度；同时，该胶膜层2与扬声器的其他部件通过胶粘剂粘结时，胶膜层2与胶粘剂发生胶水分子相互扩散现象，使得粘结面存在一个含有两种分子的中间相，从而提升粘结性能，单位面积粘结力更大。进一步地，该胶膜层2韧性好，使得本体1增加胶膜层2后，有效提高本体1的强度，且胶膜层2有效减小了本体1在高湿度环境中出现因发泡体吸水膨胀导致的鼓包分层风险。
可以理解的，可在本体1任意表面贴附胶膜层2，或者在本体1的相对两表面都贴附胶膜层2，更或者在本体1的相对两表面以及周缘侧边16均贴附胶膜层2，从而有效提高本体1相对两侧的表面粘接强度，进一步提升了本体1的强度，且同时避免了本体1在高湿度环境中出现因发泡体吸水膨胀导致的鼓包分层风险，在此不做限定。
在本实施例中，通过对贴附于本体1表面的胶膜层2进行固化处理，可采用加热、加压等方式对贴附于本体1表面的胶膜层2进行固化，使得胶膜层2在本体1的表面呈固化或半固化状态，从而得到最终的振动板结构100。
当然，在其他实施例中，胶膜层2固化方式包括自然挥发、加热、或紫外光固化。在采用自然挥发的固化方式时，自然挥发时间1～20min，该自然挥 发的时间根据胶膜层2的厚度和体积进行选择，厚度越厚，体积越大，其自然挥发的时间越长。在采用加热的固化方式时，加热温度50～80℃，加热时间1～5min，该加热的温度和时间根据胶膜层2的厚度和体积进行选择，厚度越厚，体积越大，其加热的温度越高，加热的时间越长。在采用紫外光固化的方式时，紫外光固化时间1～20S，该固化时间同样也要根据胶膜层2的厚度进行选择，厚度越厚，紫外线照射的时间越长。
在本实施例中，通过对本体1和胶膜层2进行热压处理，以使胶膜层2成为固化或半固化状态。
本发明的方法，通过在本体1的表面贴附热固性的胶膜层2，因胶膜层2中含有不同的化学活性官能团，一端能与本体1表面反应生成化学键，另一端能与胶黏剂形成共价键，故能使胶黏剂与扬声器300的其他部件的粘结强度更大，从而提高振动板结构100与扬声器300的其他部件之间的粘结稳定性，使得振动板结构100表面的粘接强度提升范围40％～300％，进而提升扬声器300的可靠性性能。
可以理解的，本发明的振动板结构100在保证不增加过多重量、厚度的情况下，不影响扬声器300的灵敏度响应，确保扬声器300厚度基本不变的情况下增加振动板结构100的粘结能力、增加振动板结构100的强度，改善振动板结构100在高湿度环境下的持续工作能力。
本实施例中，振动板结构100的本体1表面固化或半固化的胶膜层2内聚力强，粘结强度高，固化收缩小，环氧树脂固化体系含有活性大的环氧基、羟基等基团对金属或非金属有优良的附着力，具有优异的表面粘接强度。与本体1表面直接采用胶粘剂与其他部件粘接相比，环氧树脂胶膜层2与其他部件粘结时，胶膜层2与部件表面的胶粘剂发生胶水分子相互扩散现象，使得粘结面存在一个含有两种分子的中间相，从而提升粘结性能，单位面积粘结力更大；同时，环氧树脂胶膜层2韧性好，某些特殊材料如碳纤维复合本体1的碳纤维束表面增加环氧树脂胶膜层2后，连接后的复合本体1强度增加，两碳纤维束之间不易开裂，碳纤维束无剥离问题；进一步的本体1内层的发泡体层不会直接暴露在外界环境中，减小工作在高湿度环境中出现因发泡体吸水膨胀导致的鼓包分层风险。
如图6至图9所示，本发明还提出一种扬声器300，该扬声器300包括外 壳以及收容于所述外壳内的磁路系统和振动系统200，所述振动系统200包括振膜210和上述所述的振动板结构100，振动板结构100固定于振膜210的中央位置。该振动板结构100的具体结构参照前述实施例，由于本扬声器300采用了前述所有实施例的全部技术方案，因此至少具有前述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
在本实施例中，外壳用于安装固定和保护磁路系统、振动系统200以及扬声器300的其他部件，外壳的结构可以具有容腔的壳体、外壳、安装壳、安装骨架等结构，在此不做限定。
在本实施例中，磁路系统设于外壳的容腔内，且磁路系统与容腔的侧壁呈间隔设置。可以理解的，外壳用于固定和安装磁路系统，外壳的周缘凸设有支撑臂，并与磁路系统连接。
可以理解的，外壳是金属件时，磁路系统与外壳采用粘接固定。在其他实施例中，外壳为塑料注塑成型时，磁路系统的边导磁板先作为嵌件注塑在外壳中，然后其他部分再粘接固定。在本实施例中，通过设置前盖和外壳两部分结构，从而方便磁路系统和振动系统200的安装，提高扬声器100的安装便利性。
在本实施例中，磁路系统设置有磁间隙，振动系统200包括悬设于磁间隙内的音圈220，如此使得音圈220与外部电路导通，利用音圈220将电能传递至磁路系统的磁间隙，使得磁路系统产生的磁场将电能转换为机械能，从而使得音圈220发生振动，并带动振动系统200的振膜210实现振动发声，进一步将机械能转换为声能。也即设置于磁间隙内的音圈220接收到外部变化的交流电信号后，在磁路系统的磁场力的驱动下做往复切割磁力线的运动，带动振动系统200的振膜210振动发声。
在一实施例中，如图7和图9所示，所述振动板结构100的胶膜层2通过胶粘剂230与所述振膜210连接。可以理解的，振动板结构100的胶膜层2通过胶粘剂230与振膜210连接，从而进一步提高振动板结构100与振膜210之间的粘结强度和粘结稳定性。
可选地，胶粘剂230为UV胶。可以理解的，UV胶又称无影胶、光敏胶、紫外光固化胶，无影胶是一种必须通过紫外线光照射才能固化的一类胶黏剂，它可以作为粘接剂使用，也可作为油漆、涂料、油墨等的胶料使用。UV是英 文Ultraviolet Rays的缩写，即紫外光线。紫外线(UV)是肉眼看不见的，是可见光以外的一段电磁辐射，波长在10～400nm的范围。无影胶固化原理是UV固化材料中的光引发剂(或光敏剂)在紫外线的照射下吸收紫外光后产生活性自由基或阳离子，引发单体聚合、交联化学反应，使粘合剂在数秒钟内由液态转化为固态。
UV压敏胶是一款UV胶单组份紫外线固化胶，别称感压胶，压敏胶固化速度快，固化后透明度非常高，附着力强，耐黄变，耐水，耐候性非常好。
UV热熔胶指的是紫外光线热熔胶，热熔胶(英文名：Hot Glue)是一种可塑性的粘合剂，在一定温度范围内其物理状态随温度改变而改变，而化学特性不变，其无毒无味，属环保型化学产品。因其产品本身系固体，便于包装、运输、存储、无溶剂、无污染、无毒型；以及生产工艺简单，高附加值，黏合强度大、速度快等优点而备受青睐。
可以理解的，振膜210与磁路系统相对设置。振膜210包括内环部211、围绕内环部211设置的折环部212以及围绕所述折环部212设置的固定部213，所述振膜210的固定部213夹设于外壳与前盖之间，可以提高固定部213与外壳的连接稳定性。当然，在其他实施例中，固定部213也可由折环部212的外侧边向下延伸形成，如此可使得振膜210的固定部213与外壳的的外侧壁固定连接，如此既可以提高固定部213与外壳的连接稳定性，提高防水性能，还有利于增大振膜210的有效振动面积，在此不做限定。
可以理解的，振膜210的折环部212可以是凸环结构，也可以是凹环结构，也即折环部212的横街面呈向上凸起的半圆或向下凹陷的半圆结构，如此方便振膜210振动，从而实现发声。
在本实施例中，振膜210的内环部211具有相对的上表面和下表面，如图6和图7所示，振动板结构100设于振膜210面向音圈220的一侧，也即振动板结构100的第一胶膜层21通过胶粘剂230与振膜210内环部211的下表面粘结固定。当然，在另一实施例中，如图8和图9所示，振动板结构100设于振膜210背向音圈220的一侧，也即振动板结构100的第二胶膜层22通过胶粘剂230与振膜210内环部211的上表面粘结固定。
在一实施例中，如图7所示，所述振动系统200还包括音圈220，所述振动板结构100的胶膜层2通过胶粘剂230与所述音圈220连接。可以理解的， 振动板结构100的胶膜层2通过胶粘剂230与音圈220连接，从而进一步提高振动板结构100与音圈220之间的粘结强度和粘结稳定性。可选地，胶粘剂230为UV胶。
在本实施例中，如图6和图7所示，振动板结构100设于振膜210面向音圈220的一侧，此时振动板结构100夹设于振膜210的内环部211的下表面和音圈220之间，也即振动板结构100的第一胶膜层21通过胶粘剂230与振膜210内环部211的下表面粘结固定，振动板结构100的第二胶膜层22通过胶粘剂230与音圈220粘结固定。
在一实施例中，磁路系统包括导磁轭以及设于导磁轭上的中心磁路部和边磁路部，中心磁路部和边磁路部之间形成磁间隙，音圈220远离振膜210的一端悬设于磁路系统的磁间隙。
在本实施例中，导磁轭固定于外壳远离前盖的一端，中心磁路部和边磁路部设于导磁轭面向振动板结构100的一侧，且边磁路部环绕中心磁路部设置，并与中心磁路部之间形成磁间隙，从而方便音圈220悬设于磁间隙内。可以理解的，边磁路部可以是环形设置，也可以是有多个边磁路部间隔设置形成，在此不做限定。
在一实施例中，中心磁路部包括中心磁铁和中心导磁板，中心磁铁夹设于导磁轭和中心导磁板之间；边磁路部包括边磁铁和边导磁板，边磁铁夹设于导磁轭和边导磁板之间，边导磁板通过固定段与外壳的侧壁连接。
在本实施例中，中心磁铁和中心导磁板的结构轮廓相同，中心磁铁和中心导磁板可选为板状结构。边磁铁和边导磁板的结构轮廓相同，边磁铁和边导磁板的可选为环状结构。
可以理解的，边导磁板通过固定段与外壳的侧壁连接，如此设置，有利于简化边导磁板与外壳的加工工艺。在本实施例中，外壳与边导磁板的材质均为金属材料，从而有利于提高导热散热效果。可选地，外壳与多个边导磁板为一体成型结构。
本发明还提出一种电子终端，该电子终端包括设备壳体和上述所述的扬声器300，所述设备壳体设有腔体，所述扬声器300设于所述腔体内。该扬声器300的具体结构参照前述实施例，由于本电子终端采用了前述所有实施例的全部技术方案，因此至少具有前述实施例的技术方案所带来的所有有益效 果，在此不再一一赘述。
可以理解的，电子终端可以是电子设备，例如手机、音响、电脑、耳机、手表、电视或平板电脑等，在此不做限定。
以上所述仅为本发明的可选实施例，并非因此限制本发明的专利范围，凡是在本发明的构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (12)

  1. 一种振动板结构，应用于扬声器，其特征在于，所述振动板结构包括：
    本体；和
    热固性的胶膜层，所述胶膜层热压复合于所述本体的至少一表面。
  2. 如权利要求1所述的振动板结构，其特征在于，所述胶膜层的材质包括丙烯酸树脂、环氧树脂、硅胶树脂、聚氨酯树脂中的一种或多种。
  3. 如权利要求1所述的振动板结构，其特征在于，所述本体具有相对设置的第一表面和第二表面，所述胶膜层包括第一胶膜层和第二胶膜层，所述第一胶膜层设于所述第一表面，并覆盖所述第一表面，所述第二胶膜层设于所述第二表面，并覆盖所述第二表面。
  4. 如权利要求3所述的振动板结构，其特征在于，所述本体还具有连接所述第一表面和所述第二表面的侧边；
    所述胶膜层还包括第三胶膜层，所述第三胶膜层覆盖于所述侧边，并与所述第一胶膜层和所述第二胶膜层连接。
  5. 如权利要求4所述的振动板结构，其特征在于，所述第一胶膜层、所述第三胶膜层及所述第二胶膜层为一体成型结构；
    且/或，所述第一胶膜层的厚度为0.1μm～50μm；
    且/或，所述第二胶膜层的厚度为0.1μm～50μm；
    且/或，所述第三胶膜层的厚度为0.1μm～50μm。
  6. 如权利要求1至5中任一项所述的振动板结构，其特征在于，所述本体包括依次层叠设置的第一材料层、发泡体层及第二材料层；
    所述胶膜层覆盖于所述第一材料层和/或所述第二材料层背向所述发泡体层的一侧。
  7. 如权利要求6所述的振动板结构，其特征在于，所述发泡体层为PI发泡体或PMI发泡体；
    且/或，所述第一材料层为Al、PI、PET、PEN、LCP、和碳纤维复合材料中的一种或多种；
    且/或，所述第二材料层为Al、PI、PET、PEN、LCP、和碳纤维复合材料中的一种或多种。
  8. 一种如权利要求1至7中任一项所述的振动板结构的制备方法，其特征在于，所述制备方法包括以下步骤：
    将热固性的胶膜层贴附于本体的至少一表面；
    对所述本体和所述胶膜层进行热压处理，以使所述胶膜层固化或半固化，得到振动板结构。
  9. 一种扬声器，其特征在于，包括外壳以及收容于所述外壳内的磁路系统和振动系统，所述振动系统包括振膜和如权利要求1至7中任一项所述的振动板结构，所述振动板结构固定于所述振膜的中央位置。
  10. 如权利要求9所述的扬声器，其特征在于，所述振动板结构的胶膜层通过胶粘剂与所述振膜连接；
    且/或，所述振动系统还包括音圈，所述振动板结构的胶膜层通过胶粘剂与所述音圈连接。
  11. 如权利要求10所述的扬声器，其特征在于，所述胶粘剂为UV胶。
  12. 一种电子终端，其特征在于，包括设备壳体和如权利要求9至11中任一项所述的扬声器，所述设备壳体设有腔体，所述扬声器设于所述腔体内。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115348509A (zh) * 2022-08-09 2022-11-15 歌尔股份有限公司 振膜组件、发声单体、发声器件及电子设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112770229B (zh) * 2020-12-30 2023-01-24 歌尔股份有限公司 扬声器、扬声器的振动板结构的制备方法及电子终端
CN114793401B (zh) * 2022-04-20 2024-04-05 维达力实业(深圳)有限公司 3d盖板及其制备方法及电子设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040085001A1 (en) * 2000-04-19 2004-05-06 Murata Manufacturing Co., Ltd. Piezoelectric type electric acoustic converter
US20050253298A1 (en) * 2004-05-13 2005-11-17 Pioneer Corporation Method for manufacturing electroacoustic transducer diaphragm
CN200969671Y (zh) * 2006-10-31 2007-10-31 王培彦 被动式音箱振动板
CN106817663A (zh) * 2015-12-01 2017-06-09 富葵精密组件(深圳)有限公司 振膜及其制备方法、声音模组及电子装置
CN112770229A (zh) * 2020-12-30 2021-05-07 歌尔股份有限公司 振动板结构、振动板结构的制备方法、扬声器及电子终端

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103209376B (zh) * 2013-03-19 2015-11-11 歌尔声学股份有限公司 微型扬声器
CN103686548B (zh) * 2013-12-10 2017-01-04 歌尔股份有限公司 一种扬声器振膜及其制造方法
CN111819865B (zh) * 2018-03-06 2022-06-14 Ａｇｃ株式会社 扬声器装置
CN108724765A (zh) * 2018-04-18 2018-11-02 歌尔股份有限公司 纤维复合材料的制备方法、振动板以及发声装置
CN108551641B (zh) * 2018-06-15 2019-08-20 歌尔股份有限公司 扬声器
CN110166900B (zh) * 2019-04-25 2021-03-30 歌尔股份有限公司 振膜、其制作方法及包括该振膜的发声装置
CN110561847B (zh) * 2019-08-02 2022-04-05 歌尔股份有限公司 一种振动板以及发声装置
CN110677789B (zh) * 2019-09-29 2023-12-01 歌尔股份有限公司 一种复合振动板以及应用该复合振动板的扬声器
CN111654790A (zh) * 2020-06-29 2020-09-11 歌尔股份有限公司 发声器件及电子设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040085001A1 (en) * 2000-04-19 2004-05-06 Murata Manufacturing Co., Ltd. Piezoelectric type electric acoustic converter
US20050253298A1 (en) * 2004-05-13 2005-11-17 Pioneer Corporation Method for manufacturing electroacoustic transducer diaphragm
CN200969671Y (zh) * 2006-10-31 2007-10-31 王培彦 被动式音箱振动板
CN106817663A (zh) * 2015-12-01 2017-06-09 富葵精密组件(深圳)有限公司 振膜及其制备方法、声音模组及电子装置
CN112770229A (zh) * 2020-12-30 2021-05-07 歌尔股份有限公司 振动板结构、振动板结构的制备方法、扬声器及电子终端

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115348509A (zh) * 2022-08-09 2022-11-15 歌尔股份有限公司 振膜组件、发声单体、发声器件及电子设备

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