Membrane material manufacturing method, membrane material, diaphragm and speaker

Abstract

The embodiment of the present invention discloses a membrane material manufacturing method, a membrane material, a diaphragm and a loudspeaker, and relates to the technical field of loudspeakers, wherein the membrane material manufacturing method comprises: providing a first substrate layer; applying glue to a set position of the first substrate layer using at least two glue-applying components to form a glue layer, wherein the movement direction of the glue-applying components relative to the first substrate layer includes a first direction and a second direction perpendicular to each other; attaching a second substrate layer to the glue layer, wherein the glue layer is placed between the first substrate layer and the second substrate layer; and pressing the first substrate layer and the second substrate layer. The embodiment of the present invention can make the physical properties of the membrane material used to make the loudspeaker diaphragm different in different regions, thereby achieving the purpose of accurately adjusting the loudspeaker characteristics.

Description

Technical Field

[0001] The present invention relates to the technical field of loudspeakers, and in particular to a membrane material manufacturing method, a membrane material, a diaphragm and a loudspeaker. Background Art

[0002] With the development of science and technology, electronic products have become indispensable auxiliary tools for people's work and life. The frequency of replacement of electronic products such as tablet computers, mobile phones, and navigation systems has also increased with the development of science and technology. Among them, speakers, especially micro speakers, as the sound-generating devices of the above electronic products, have become an important aspect of evaluating the quality of electronic products.

[0003] The diaphragm is the sound-generating unit of the speaker, and its performance can directly determine the sound quality of the speaker. As people's requirements for electronic products become higher and higher, the requirements of technicians in this field for speakers become higher and higher, which in turn promotes higher and higher performance requirements for diaphragms. Summary of the invention

[0004] In view of this, the purpose of the present invention is to solve the problems existing in the above-mentioned prior art, and to provide a membrane material manufacturing method, a membrane material, a diaphragm and a loudspeaker to obtain a membrane material with adjustable local physical properties. The diaphragm using the membrane material is beneficial to the sound effect of the loudspeaker.

[0005] According to a first aspect of the present invention, there is provided a method for manufacturing a film material, comprising: providing a first substrate layer; using at least two glue-applying components to apply glue to a set position of the first substrate layer to form a glue layer, wherein the movement direction of the glue-applying components relative to the first substrate layer includes a first direction and a second direction perpendicular to each other; attaching a second substrate layer to the glue layer, with the glue layer being placed between the first substrate layer and the second substrate layer; and pressing the first substrate layer and the second substrate layer together.

[0006] Preferably, the first substrate layer moves along a first direction, and the glue-applying assembly reciprocates along a second direction, wherein the first direction is perpendicular to the second direction.

[0007] In any of the above schemes, it is preferred that the glue application component is a glue application nozzle or a screen fixture, the relative positions of the multiple glue application components are fixed, and the types of glue in the multiple glue application components are the same or different.

[0008] Preferably, in any of the above schemes, the first substrate layer and the second substrate layer are made of at least one of the following materials: polyetheretherketone, polyarylate, polyethylene naphthalate, polyester resin, polycarbonate, polyetherimide, polyphenylene sulfide resin, tetraphenylethylene, thermoplastic polyurethane elastomer rubber, and thermoplastic-based composite materials.

[0009] Preferably in any of the above schemes, before applying glue to the set position on the first substrate layer, the method also includes: setting a positioning hole along the first direction and passing through the first substrate layer at the edge of the first substrate layer; applying glue to the set position on the first substrate layer includes: determining the set position based on the positioning hole; and aligning the glue application component to the set position based on the positioning hole.

[0010] Preferably, in any of the above schemes, laminating the first substrate layer and the second substrate layer comprises: configuring a roller to press the second substrate layer on the adhesive layer; and rotating the roller to drive the film material to move along the first direction.

[0011] According to a second aspect of an embodiment of the present invention, a film material is provided. The film material is produced by the film material production method of the first aspect and each embodiment. The film material includes a first substrate layer, a second substrate layer and an adhesive layer. The adhesive layer is placed between the first substrate layer and the second substrate layer to connect the first substrate layer and the second substrate layer. The adhesive layer includes a first adhesive area and a second adhesive area at a designated position corresponding to the first substrate layer and the second substrate layer; the first adhesive area is connected to the second adhesive area.

[0012] Preferably, the types of glue in the first glue area and the second glue area are the same or different.

[0013] In any of the above solutions, preferably, the first glue area is photosensitive glue, and the second glue area is photosensitive glue or solvent glue.

[0014] In any of the above solutions, preferably, the first substrate layer and the second substrate layer are made of at least one of the following materials:

[0015] Polyetheretherketone, polyarylate, polyethylene naphthalate, polyester resin, polycarbonate, polyetherimide, polyphenylene sulfide resin, tetraphenylethylene, thermoplastic polyurethane elastomer rubber, thermoplastic-based composite materials.

[0016] According to a third aspect of the embodiments of the present invention, a diaphragm is provided. The diaphragm is formed by the film material of the second aspect and each embodiment through mold forming and edge cutting steps.

[0017] According to a fourth aspect of the embodiments of the present invention, a loudspeaker is provided. The loudspeaker includes a bracket and a voice coil fixed in the bracket, and a diaphragm according to the third aspect is connected to the surface of the voice coil.

[0018] Based on the membrane material manufacturing method, membrane material, diaphragm and loudspeaker provided by the present invention, multiple glue application components are used to apply glue at different positions on the first substrate layer and attach the second substrate layer, so that the physical properties of the glue layer in different areas of the obtained membrane material are different, and the damping and physical properties of the folding ring of the diaphragm after molding are inconsistent in different areas, and the purpose of accurately adjusting the speaker characteristics can be achieved based on these characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of an assembly of an embodiment of a film material manufacturing method of the present invention;

[0020] Figure 2 It is a schematic diagram of another embodiment of the membrane manufacturing method of the present invention;

[0021] Figure 3 It is a structural schematic diagram of an embodiment of the membrane material of the present invention;

[0022] Figure 4 The membrane material of the present invention Figure 3 AA cross-sectional structural schematic diagram of the embodiment shown;

[0023] Figure 5 The membrane material of the present invention Figure 3 A schematic diagram of the BB cross-section structure of the embodiment shown;

[0024] Figure 6 It is a structural schematic diagram of an embodiment of a diaphragm of the present invention;

[0025] Figure 7 is a schematic structural diagram of another embodiment of the diaphragm of the present invention;

[0026] Figure 8 It is a structural schematic diagram of another embodiment of the diaphragm of the present invention.

[0027] Figure numerals: 1 - first substrate layer; 11 - positioning hole; 2 - glue application component; 3 - glue; 4 - second substrate layer; 5 - roller; 6 - glue layer; 61 - first glue area; 62 - second glue area. DETAILED DESCRIPTION

[0028] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. It is possible for a person skilled in the art to fully understand the present invention without the description of these details. In order to avoid confusing the essence of the present invention, known methods, processes, flows, components and circuits are not described in detail.

[0029] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0030] Unless the context clearly requires otherwise, words such as “include”, “including” and the like in the specification should be interpreted as including rather than being exclusive or exhaustive; that is, as meaning “including but not limited to”.

[0031] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0032] Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the related art, in the process of producing membrane materials for making speaker diaphragms, the thickness of the glue layer set at different positions of the first substrate layer is consistent. After the substrate is sprayed with glue, the second substrate layer is fed and connected to the first substrate layer through glue, and finally the first substrate layer, the second substrate layer and the glue layer are laminated. If the glue between the first substrate layer and the second substrate layer is a thermosetting glue, it needs to be heated and cured after lamination or during lamination; if the glue coated between the first substrate layer and the substrate is a photosensitive UV glue, it needs to be light-cured after lamination. The physical properties of the finished membrane material are consistent at any position. If the physical properties of the specified position of the membrane material need to be adjustable, it is necessary to optimize and innovate the membrane material manufacturing process.

[0034] The embodiments of the present invention provide a membrane material manufacturing method, a membrane material, a diaphragm and a loudspeaker to solve the defects existing in the above-mentioned related technologies. The membrane material with different physical properties in different regions is used as the manufacturing material of the diaphragm to achieve the purpose of accurately adjusting the characteristics of the loudspeaker.

[0035] A first aspect of an embodiment of the present invention relates to a method for manufacturing a film material, by which a film material having different physical properties in different regions is manufactured. The method may include the following steps:

[0036] S1-providing a first substrate layer 1;

[0037] Figure 1 FIG. 1 is a schematic diagram of an assembly of an embodiment of a membrane manufacturing method of the present invention. Figure 1 As shown, in this embodiment, the first substrate layer 1 can be laid flat on a platform, and the first substrate layer 1 on the platform can be aligned with the platform in the first direction ( Figure 1 Relative sliding occurs in the direction of the arrow pointing to the left in the lower middle part), or the platform on which the first substrate layer 1 is laid can move along the first direction.

[0038] The first substrate layer 1 can be a polymer material film with a set width, and the polymer material can be one of polyether-ether-ketone (PEEK), polyaryl ester (PAR), polyethylene naphthalate diformic acid glycol ester (PEN), polyester resin (polyethylene glycol terephthalate, PET), polycarbonate (PC), polyetherimide (PEI), polyphenylene sulfide (PPS), thermoplastic elastomer (TPE), thermoplastic polyurethane (TPU) or thermoplastic resin composite (TPC).

[0039] In step S1, the purpose of laying the first substrate layer 1 flat on a platform is to provide strength support for the first substrate layer 1 and ensure that the spacing between each position of the first substrate layer 1 and the roller 5 when passing under the roller 5 is equal, so that the pressure value of the roller 5 applied to the first substrate layer 1 is equal. The above-mentioned design can ensure the strength of the force applied by the roller 5 to the first substrate layer 1. On the other hand, by laying the first substrate layer 1 flat on the platform, wrinkles on the first substrate layer 1 during the lamination process can be avoided to affect the quality of the product obtained after lamination.

[0040] S2-Use at least two glue-applying components 2 to apply glue to a set position of the first substrate layer 1 to form a glue layer 6, wherein the movement direction of the glue-applying components 2 relative to the first substrate layer 1 includes a first direction and a second direction perpendicular to each other;

[0041] like Figure 1 As shown, the glue application component 2 in this embodiment can be a glue application nozzle, which performs glue spraying operation on the first substrate layer 1 from above and downwardly. In the actual production process, the width of the glue sprayed by the glue application component 2 on the first substrate layer 1 can be determined according to the distance between the glue application component 2 and the first substrate layer 1. The larger the distance, the larger the width of the glue on the first substrate layer 1; the smaller the distance, the smaller the width of the glue on the first substrate layer 1. In this embodiment, the "width" is the length of the glue 3 falling on the first substrate layer 1 along the first direction after one glue spraying operation is completed.

[0042] Figure 2This is a schematic diagram of another embodiment of the membrane manufacturing method of the present invention. Figure 1 and Figure 2 In this embodiment, the traveling direction of the first substrate layer 1 may be a first direction, and the glue application component 2 may reciprocate in a second direction perpendicular to the first direction, wherein the second direction may be Figure 1 The direction of the arrow in the dotted circle on the right side of the glue application component 2, Figure 1 The direction shown in the figure can be toward the inside or toward the outside.

[0043] In the actual production process, if the length of the glue application component 2 on the first substrate layer 1 is equal to the width of the first substrate layer 1, the glue application operation on the first substrate layer 1 can be performed in one of the following three ways: first, the first substrate layer 1 is applied along the first direction to the first substrate layer 1; Figure 1 The first substrate layer 1 moves in the direction indicated by the arrow in the middle and lower part, while the glue application component 2 stays in a fixed position and does not move; the second method is that the first substrate layer 1 and the platform do not produce relative displacement, the glue application component 2 reciprocates along the first direction, and after completing the glue spraying operation of a certain length of the first substrate layer 1, the first substrate layer 1 is moved along the first direction, so that the un-glued first substrate layer 1 is placed under the glue application component 2; another method is that the first substrate layer 1 moves along the first direction, and the glue application component 2 reciprocates along the first direction. In this method, the glue application component 2 moves in a direction away from the glued first substrate layer 1, that is, Figure 1 When the first substrate layer 1 reaches the boundary, the first substrate layer 1 stops moving, and the glue-applying component 2 returns along the first direction to the boundary of the glue layer 6 on the glue-applied first substrate layer 1, and then the first substrate layer 1 moves in the first direction and the glue-applying component 2 moves in the opposite direction.

[0044] Among the above methods, the first method can maintain the continuity of the gluing process of the first substrate layer 1 to a certain extent. There is no need to stop during the production process, and the gluing operation can be continuously performed on the first substrate layer 1, thereby improving production efficiency.

[0045] In this embodiment, a plurality of glue applying components 2 can be arranged side by side along the width direction of the first substrate layer 1, and the types of glue placed in different glue applying components 2 can be the same or different. By filling different types of glue 3 in different glue applying components 2, the physical properties of the glue layer 6 formed on the first substrate layer 1 can be different, thereby achieving different local physical properties of the formed membrane material, which is more suitable as a material for making a loudspeaker diaphragm. The same or different glues (two or more glues) can be stored in each glue applying component 2, so that the types of glue 3 at different positions on the glue applying path along the second direction can be different each time. As the first substrate layer 1 is continuously fed, the glue applying component 2 applies glue repeatedly, and finally a planar membrane material with locally adjustable physical properties is obtained.

[0046] In this embodiment, the length of the glue application components 2 along the second direction is less than the width of the first substrate layer 1. In this process, the glue application components 2 need to reciprocate along the second direction to ensure that glue is applied at every position of the first substrate layer 1, thereby strengthening the connection strength between the first substrate layer 1 and the second substrate layer 4. In a specific example, the first substrate layer 1 can move along the first direction, and the glue application components 2 can reciprocate along the second direction, wherein the first direction and the second direction can be perpendicular to each other.

[0047] S3-Attach the second substrate layer 4 to the adhesive layer 6, and the adhesive layer 6 is placed between the first substrate layer 1 and the second substrate layer 4;

[0048] like Figure 1 As shown, a roller 5 can be arranged above the left side of the first substrate layer 1, and the second substrate layer 4 is arranged between the adhesive layer 6 and the roller 5. By pressing the roller 5, the second substrate layer 4 can be connected to the first substrate layer 1 through the adhesive layer; by rotating the roller 5, the first substrate layer 1 and the second substrate layer 4 glued together can be moved synchronously along the first direction, which can not only make the first substrate layer 1 and the second substrate layer 4 connected together move out of the platform along the first direction, but also can apply force to the subsequent first substrate layer 1 and the second substrate layer 4 to move, so as to ensure the continuity of the first substrate layer 1 and the second substrate layer 4 compacted by the roller 5.

[0049] The second substrate layer 4 can be one of the polymer material films made of the following materials: polyetheretherketone, polyarylate, polyethylene naphthalate, polyester resin, polycarbonate, polyetherimide, polyphenylene sulfide resin, tetraphenylethylene, thermoplastic polyurethane elastomer rubber, thermoplastic matrix composite material. When making the film material, the type of the second substrate layer 4 can be the same as that of the first substrate layer 1, or it can be different from the material of the first substrate layer 1.

[0050] In this embodiment, the roller 5 cooperates with the platform to press the second substrate layer 4 on the first substrate layer 1 after glue application, so that the first substrate layer 1 and the second substrate layer 4 are glued together. Under the rotation of the roller 5, relative movement between the roller 5 and the second substrate layer 4 can be avoided, and the local structure of the second substrate layer 4 can be damaged by rolling the second substrate layer 4.

[0051] S4-pressing the first substrate layer 1 and the second substrate layer 4. Specifically, in some specific examples, a roller 5 may be configured to press the second substrate layer 4 onto the adhesive layer 6; the roller 5 rotates to drive the film material to move along the first direction.

[0052] In this embodiment, the lamination of the first substrate layer 1 and the second substrate layer 4 and the feeding of the second substrate layer 4 can be performed simultaneously, and the spacing between the first substrate layer 1 and the roller 5 can be slightly smaller than the sum of the thicknesses of the adhesive layer 6 and the second substrate layer 4. In this way, during the force application process of the roller 5, the first substrate layer 1, the adhesive layer 6, and the second substrate layer 4 can be pressed together to form a film material not greater than a set thickness. In another embodiment, a pressure sensor can be installed on the contact surface of the roller 5 with the second substrate layer 4, so that the pressure value of the roller 5 on the second substrate layer 4 is maintained at a set value, so as to ensure that the pressure values ​​received by each position of the first substrate layer 1, the adhesive layer 6, and the second substrate layer 4 during the process of passing through the roller 5 are equal.

[0053] The membrane material formed by the method of the above-mentioned embodiment is formed by using at least two glue applying components 2 to apply glue to the first substrate layer 1 during the feeding movement during the gluing process, and the types of glue 3 in different glue applying components 2 and the glue spraying power of the glue applying components 2 are set to be different; and the second substrate layer 4 is pressed on the formed glue layer 6, and finally a membrane material with locally adjustable physical properties is obtained, which is suitable for the speaker diaphragm with adjustable local physical properties to improve the sound quality of the speaker.

[0054] In some embodiments, the glue application component 2 is one of a glue application nozzle and a screen fixture, the relative positions of the multiple glue application components 2 are fixed, and the types of glue in the multiple glue application components 2 are the same or different. In this embodiment, the glue application nozzle can spray the glue 3 stored in the glue application component 2 onto the first substrate layer 1 during operation. During the spraying process, the area of ​​the glue 3 sprayed from the nozzle toward the first substrate layer gradually increases, and the glue 3 is atomized during the spraying process, so that the sprayed glue 3 can fall evenly on the first substrate layer 1, avoiding the columnar glue from affecting the distribution of the glue 3 on the first substrate layer 1. The reason why the columnar glue 3 affects the distribution of the glue 3 on the first substrate layer 1 is that it needs to be pressed by the roller 5. During the pressing process, the glue 3 may not flow according to the set trend between the first substrate layer 1 and the second substrate layer 4 due to the pressure, affecting the physical properties of the formed film material.

[0055] In this embodiment, by spraying glue 3 on the first substrate layer 1 through a glue nozzle, or printing glue 3 on the first substrate layer 1 through a screen jig, different glues 3 in the glue application component 2 can be fixed at a set position between the first substrate layer 1 and the second substrate layer 4, thereby ensuring the accuracy of the adjustable position of the physical properties on the film material after molding.

[0056] In some embodiments, before applying glue to the set position on the first substrate layer 1, the method also includes: setting a positioning hole 11 along the first direction and passing through the first substrate layer 1 at the edge of the first substrate layer 1; applying glue to the set position on the first substrate layer 1, including: determining the set position based on the positioning hole 11; and aligning the glue application component 2 to the set position based on the positioning hole 11.

[0057] In this embodiment, the position of the positioning hole 11 set on the first substrate layer 1 can be a position close to the two side edges of the first substrate layer 1 along the first direction. The glue application component 2 can determine the exact position to be glued on the first substrate layer 1 by determining the position of the positioning hole 11 on the first substrate layer 1. The positioning hole 11 can provide a reference for the glue application component 2 to determine the aforementioned set position, thereby improving the accuracy of the glue application component 2 in determining the glue application position on the first substrate layer 1.

[0058] Based on the same or similar design concept, a second aspect of an embodiment of the present invention provides a membrane material, which can be manufactured according to the various steps of the membrane material manufacturing method involved in the first aspect and various preferred embodiments. Figure 3 It is a structural schematic diagram of an embodiment of the membrane material of the present invention; Figure 4 The membrane material of the present invention Figure 3 AA cross-sectional structural schematic diagram of the embodiment shown; Figure 5 The membrane material of the present invention Figure 3 The BB cross-sectional structure diagram of the embodiment shown is shown. Figures 3 to 5 As shown, the film material may include a first substrate layer 1, a second substrate layer 4 and an adhesive layer 6, wherein the adhesive layer 6 is placed between the first substrate layer 1 and the second substrate layer 4 to connect the first substrate layer 1 and the second substrate layer 4, and the adhesive layer 6 includes a first adhesive area 61 and a second adhesive area 62 at a designated position corresponding to the first substrate layer 1 and the second substrate layer 4; the first adhesive area 61 is connected to the second adhesive area 62.

[0059] The first glue area 61 and the second glue area 62 are components of the glue layer 6, and the materials of the glue 3 forming the glue layer 6 can be the same or different. The first glue area 61 can be a UV curing adhesive layer. The second glue area 62 can be a UV curing adhesive layer or a solvent adhesive layer. The UV curing adhesive layer is a glue layer formed by curing the UV curing (UV glue) glue after ultraviolet irradiation. The solvent adhesive layer is a glue layer formed by heating and curing the solvent glue. Among them, if the materials of the first glue area 61 and the second glue area 62 are the same, for example, both are UV curing adhesive layers, then according to the different proportions of their component contents or different compositions, they can also have different physical properties and damping properties. The UV curing adhesive layer or the solvent adhesive layer is beneficial to the curing and molding process of the adhesive layer part during the production of the membrane material.

[0060] The membrane material provided in the above-mentioned embodiment, the glue layer 6 placed between the first substrate layer 1 and the second substrate layer 4 can have different types of glue or different component contents at different positions, so that the local physical properties of the membrane material of this embodiment can be adjusted. The local physical properties of the membrane material can be adjusted during the manufacture of the diaphragm to improve the sound quality of the speaker.

[0061] In some embodiments, the first substrate layer 1 and the second substrate layer 4 are made of at least one of the following materials: polyetheretherketone, polyarylate, polyethylene naphthalate, polyester resin, polycarbonate, polyetherimide, polyphenylene sulfide resin, tetraphenylethylene, thermoplastic polyurethane elastomer rubber, and thermoplastic-based composite materials.

[0062] In some embodiments, the membrane material can also be set as a multi-layer structure, such as 5 layers, 7 layers, etc., wherein the substrate layers connected by the same adhesive layer 6 can be two identical first substrate layers 1 or second substrate layers 4, or can be the first substrate layer 1 and the second substrate layer 4 as in the above embodiment. The overall physical properties and damping properties of the membrane material can be adjusted by multiple layers (of different properties) of adhesive layers 6. After the formed membrane material is applied to the diaphragm of the speaker, the performance of the speaker can be further improved. All of the above can be adjusted according to the output characteristics required by the speaker in actual situations.

[0063] Based on the same or similar design ideas, the third aspect of the embodiments of the present invention provides a diaphragm, which is formed by the film material involved in the second aspect and each embodiment through mold forming and edge cutting steps. The film material is compounded by a multi-layer substrate and an adhesive layer. Due to the different physical properties of different areas of the adhesive layer, the film material also obtains different physical properties at different positions, thereby making the film material have good vibration characteristics.

[0064] Figure 6 It is a structural schematic diagram of an embodiment of a diaphragm of the present invention; Figure 7 is a schematic structural diagram of another embodiment of the diaphragm of the present invention; Figure 8 FIG. 2 is a schematic diagram of the structure of another embodiment of the diaphragm of the present invention. Figures 6 to 8 As shown, the diaphragm made by the aforementioned second aspect and each preferred embodiment can obtain different physical properties at different positions of the film material according to different patterns of the first glue area 61, thereby achieving self-regulation of the physical properties of the local area of ​​the diaphragm.

[0065] The four corners of the diaphragm may be provided with patterns, and the physical properties of the patterned diaphragm area are different from the physical properties of the plane area of ​​the diaphragm. When the diaphragm vibrates, the vibration characteristics of the patterned areas at the four corners are different from those of the plane area, thereby achieving precise adjustment of the speaker characteristics. The specific adjustment can be determined based on the shape of the set pattern and the density of the pattern, and this embodiment is not specifically limited here. The physical properties of different areas of the diaphragm can be adjusted by the relative thickness of the first glue area 61 and the second glue area 62, or by the different materials and component contents of the first glue area 61 and the second glue area 62.

[0066] In some other embodiments, the characteristics of the loudspeaker can be adjusted by changing the size of the pattern area and the plane area on the diaphragm and the physical characteristics of each area. Different patterns and different planes may also have different physical characteristics.

[0067] For example, the physical characteristics of the patterned area at the four corners of the diaphragm are relatively small, while the physical characteristics of the plane area are relatively large. The patterned area is relatively rigid and hard, and it is not easy to produce wrinkles during vibration. The plane area is relatively rigid, which can effectively reduce the resonance frequency of the speaker, expand the bandwidth, and improve performance.

[0068] Based on the same or similar design concept, the fourth aspect of the embodiment of the present invention provides a speaker, which includes a bracket and a voice coil fixed in the bracket, and a diaphragm as mentioned in the third aspect is connected to the surface of the voice coil. The speaker of this embodiment adjusts the local physical properties of the diaphragm. Then, the characteristics of the speaker are accurately adjusted, the characteristic bandwidth and anti-wrinkle ability of the speaker are improved, and the performance of the speaker is significantly improved.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for producing a membrane material, characterized in that: include: Providing a first substrate layer (1); Using at least two glue-applying components (2) to apply glue to a set position of the first substrate layer (1) to form a glue layer (6), wherein the glue in the plurality of glue-applying components (2) is of different types, and the movement direction of the glue-applying components (2) relative to the first substrate layer (1) includes a first direction and a second direction that are perpendicular to each other; The second substrate layer (4) is attached to the adhesive layer (6), and the adhesive layer (6) is placed between the first substrate layer (1) and the second substrate layer (4); The first substrate layer (1) and the second substrate layer (4) are pressed together, comprising arranging a roller (5) above the first substrate layer (1) to press the second substrate layer (4) onto the adhesive layer (6) and connect it to the first substrate layer (1), while the roller (5) rotates to drive the film material to move along a first direction.

2. The film manufacturing method according to claim 1, characterized in that: The first substrate layer (1) moves along a first direction, and the glue application component (2) reciprocates along a second direction, wherein the first direction is perpendicular to the second direction.

3. The film manufacturing method according to claim 1, characterized in that: The glue applying component (2) is one of a glue applying nozzle and a screen fixture, and the relative positions of a plurality of the glue applying components (2) are fixed.

4. The film manufacturing method according to claim 1 or 2, characterized in that: The first substrate layer (1) and the second substrate layer (4) are made of at least one of the following materials: Polyetheretherketone, polyarylate, polyethylene naphthalate, polyester resin, polycarbonate, polyetherimide, polyphenylene sulfide resin, tetraphenylethylene, thermoplastic polyurethane elastomer rubber, thermoplastic-based composite materials.

5. The film material manufacturing method according to claim 3, characterized in that: Before applying glue to a set position on the first substrate layer (1), the method further comprises: A positioning hole (11) is provided along a first direction at an edge of the first substrate layer (1) and through the first substrate layer (1); The step of applying glue to a set position on the first substrate layer (1) comprises: Determining the set position based on the positioning hole (11); The glue application component (2) is aligned with the set position based on the positioning hole (11).

6. A membrane material, characterized in that: The adhesive layer (6) comprises a first substrate layer (1), a second substrate layer (4) and an adhesive layer (6), wherein the adhesive layer (6) is disposed between the first substrate layer (1) and the second substrate layer (4) to connect the first substrate layer (1) and the second substrate layer (4), and the adhesive layer (6) comprises a first adhesive region and a second adhesive region at a designated position corresponding to the first substrate layer (1) and the second substrate layer (4); The first glue area is connected to the second glue area, and the types of glue in the first glue area and the second glue area are different.

7. The membrane material according to claim 6, characterized in that: The first glue area is photosensitive glue, and the second glue area is solvent glue.

8. The membrane material according to claim 6 or 7, characterized in that: The first substrate layer (1) and the second substrate layer (4) are made of at least one of the following materials: Polyetheretherketone, polyarylate, polyethylene naphthalate, polyester resin, polycarbonate, polyetherimide, polyphenylene sulfide resin, tetraphenylethylene, thermoplastic polyurethane elastomer rubber, thermoplastic-based composite materials.

9. A diaphragm, characterized in that: The film material according to any one of claims 6 to 8 is manufactured through mold forming and edge cutting steps.

10. A loudspeaker, comprising a bracket and a voice coil fixed in the bracket, characterized in that: The diaphragm according to claim 9 is connected to the surface of the voice coil.

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