CN214177577U - Membrane material, vibrating diaphragm and loudspeaker - Google Patents

Abstract

The embodiment of the utility model discloses membrane material, vibrating diaphragm and speaker relates to speaker technical field, wherein, the membrane material includes: the adhesive layer is arranged between the first substrate layer and the second substrate layer and is used for connecting the first substrate layer and the second substrate layer, and the adhesive layer comprises a first adhesive area and a second adhesive area at the designated position corresponding to the first substrate layer and the second substrate layer; the first glue area is connected with the second glue area. The embodiment of the utility model provides a can make the membrane material that is used for making the speaker vibrating diaphragm in the physical characteristics difference of different regions to reach the purpose of accurate regulation speaker characteristic.

Description

Membrane material, vibrating diaphragm and loudspeaker

Technical Field

The utility model relates to a speaker technical field particularly, relates to a membrane material, vibrating diaphragm and speaker.

Background

With the development of science and technology, electronic products have become indispensable auxiliary tools for people's work and life. The frequency of updating electronic products such as tablet computers, mobile phones, navigators and the like is continuously increasing along with the development of science and technology. Among them, a speaker, especially a micro speaker, is an important aspect for evaluating the quality of an electronic product as a generating device of the electronic product.

The diaphragm is used as a sound production unit of the loudspeaker, and the performance of the diaphragm can directly determine the sound production quality of the loudspeaker. Along with the requirements of people on electronic products are higher and higher, the requirements of technicians in the field on the loudspeaker are higher and higher, and the performance requirements on the vibrating diaphragm are further promoted.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a membrane material, a vibrating diaphragm and a speaker to improve the sound quality of the speaker.

According to a first aspect of the present invention, a film material is provided, which is manufactured by the film material manufacturing method of the first aspect and the embodiments, and includes a first substrate layer, a second substrate layer, and a glue layer, wherein the glue layer is disposed between the first substrate layer and the second substrate layer, and connects the first substrate layer and the second substrate layer, and the glue layer includes a first glue region and a second glue region at a designated position where the first substrate layer and the second substrate layer correspond to each other; the first glue area is connected with the second glue area.

Preferably, the glue of the first glue area is of the same or different kind as the glue of the second glue area.

In any of the above embodiments, preferably, the first glue area is a photosensitive glue, and the second glue area is a photosensitive glue or a solvent glue.

In any of the above embodiments, the first base material layer and the second base material layer are preferably made of at least one of the following materials:

polyether ether ketone, polyarylate, polyethylene naphthalate, polyester resin, polycarbonate, polyetherimide, polyphenylene sulfide resin, tetraphenyl ethylene, thermoplastic polyurethane elastomer rubber, and thermoplastic-based composite material.

The utility model provides a second aspect provides a vibrating diaphragm, and this vibrating diaphragm is formed through mould shaping, the preparation of edge cutting step by above-mentioned second aspect and each embodiment membrane material.

The utility model provides a third aspect provides a loudspeaker, and this loudspeaker includes the support and fixes voice coil loudspeaker voice coil in the support the surface of voice coil loudspeaker voice coil is connected with the vibrating diaphragm as above-mentioned second aspect and each embodiment.

Based on the foregoing the utility model provides a membrane material, vibrating diaphragm and speaker makes the glue film physical properties in the different regions of membrane material that obtains different, and the book ring of the vibrating diaphragm after the shaping is at different regional damping, physical properties inconsistent to can reach the purpose of accurate regulation speaker characteristic in view of the above.

Drawings

FIG. 1 is an assembly view of a film manufacturing apparatus embodying the present invention;

FIG. 2 is a schematic diagram of the movement of the glue applying assembly in the process of manufacturing the film material;

FIG. 3 is a schematic structural view of an embodiment of the film of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure A-A of the membrane material of the present invention shown in FIG. 3;

FIG. 5 is a schematic view of the cross-sectional structure B-B of the membrane material of the present invention in the embodiment shown in FIG. 3;

fig. 6 is a schematic structural diagram of an embodiment of the diaphragm of the present invention;

fig. 7 is a schematic structural diagram of another embodiment of the diaphragm of the present invention;

fig. 8 is a schematic structural diagram of another embodiment of the diaphragm of the present invention.

Reference numerals: 1-a first substrate layer; 11-a positioning hole; 2-a sizing component; 3-glue; 4-a second substrate layer; 5-a roller; 6-glue layer; 61-a first glue area; 62-second glue area.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the related art, in the process of producing the membrane material for manufacturing the loudspeaker diaphragm, the thicknesses of the glue layers arranged at different positions of the first substrate layer are consistent. After glue spraying is carried out on the base material, the second base material layer is fed and connected with the first base material layer through glue, and finally, the first base material layer, the second base material layer and the glue layer are subjected to pressing treatment. If the glue between the first substrate layer and the second substrate layer is a thermal curing glue, heating and curing are needed after lamination or in the lamination process; if the glue coated between the first base material layer and the base material is photosensitive glue UV glue, then illumination curing is needed after lamination. The physical properties of the manufactured membrane at any position are consistent, and if the physical properties of the designated position of the membrane are required to be adjustable, optimization and innovation are required from the aspect of membrane manufacturing technology.

An embodiment of the utility model provides a membrane material, vibrating diaphragm and speaker to solve the defect that exists among the above-mentioned correlation technique, through the different membrane materials of different regional physical properties as the preparation material of vibrating diaphragm, with the purpose of realizing the accurate speaker characteristic of adjusting.

First, the embodiment of the present invention introduces a manufacturing method of a film material to manufacture the film material with different physical properties in different areas by the method. The method may comprise the steps of:

s1-providing a first substrate layer 1;

fig. 1 is an assembly schematic diagram for implementing an embodiment of a film material manufacturing method of the present invention, as shown in fig. 1, in this embodiment, the first substrate layer 1 may be tiled on a platform, and the first substrate layer 1 on the platform may slide relatively with the platform in a first direction (arrow direction pointing to the left in fig. 1), or the platform on which the first substrate layer 1 is tiled may move along the first direction.

The first substrate layer 1 may be a polymer material film having a predetermined width, and the polymer material may be one of poly-ether-ether-ketone (PEEK), Polyarylate (PAR), Polyethylene naphthalate (PEN), polyester resin (PET), Polycarbonate (PC), Polyetherimide (PEI), Polyphenylene sulfide (PPS), Thermoplastic Elastomer (TPE), Thermoplastic Polyurethane (TPU), or Thermoplastic resin matrix composite (TPC).

In step S1, the purpose of tiling the first substrate layer 1 on a platform is to support the first substrate layer 1 in strength, and ensure that each position of the first substrate layer 1 is equal to the distance between the rollers 5 when passing under the rollers 5, so that the pressure value of the rollers 5 that the first substrate layer 1 can receive is equal. The mode design can ensure the force application strength of the roller 5 on the first substrate layer 1. On the other hand, by tiling the first substrate layer 1 on the platform, the first substrate layer 1 can be prevented from generating wrinkles in the laminating process to influence the product quality obtained after lamination.

S2, gluing the set position of the first substrate layer 1 by using at least two gluing assemblies 2 to form a glue layer 6, wherein the moving directions of the gluing assemblies 2 relative to the first substrate layer 1 comprise a first direction and a second direction which are perpendicular to each other;

as shown in fig. 1, the glue applying assembly 2 in this embodiment may be a glue applying nozzle, and the glue spraying operation is performed on the first substrate layer 1 downward above the first substrate layer 1. In the actual production process, the glue spraying width of the glue applying assembly 2 on the first substrate layer 1 can be determined according to the distance between the glue applying assembly 2 and the first substrate layer 1, and the larger the distance is, the larger the glue falling width on the first substrate layer 1 is; the smaller the pitch, the smaller the width of the glue falling on the first base material layer 1. In this embodiment, "width" is the length of the glue 3 falling on the first substrate layer 1 along the first direction after the glue spraying operation is completed.

Fig. 2 is an assembly diagram of another embodiment of a film material manufacturing method according to the present invention, and with reference to fig. 1 and fig. 2, in this embodiment, the traveling direction of the first substrate layer 1 may be a first direction, and the glue applying assembly 2 may reciprocate in a second direction perpendicular to the first direction, where the second direction may be an arrow direction in a dotted circle on the right side of the glue applying assembly 2 in fig. 1, and the direction shown in fig. 1 may be an inward side or an outward side.

In the actual production process, if the length of the glue applied by the glue applying component 2 on the first substrate layer 1 is equal to the width of the first substrate layer 1, the glue applying operation can be performed on the first substrate layer 1 in one of the following three ways: firstly, a first substrate layer 1 moves along a first direction towards the direction indicated by an arrow at the lower part in the figure 1, and a glue applying component 2 stays at a fixed position and does not move; secondly, the positions of the first substrate layer 1 and the platform do not generate relative displacement, the glue applying assembly 2 reciprocates along the first direction, and after glue spraying operation of a certain length of the first substrate layer 1 is completed, the first substrate layer 1 is moved along the first direction, so that the first substrate layer 1 without glue applying is arranged below the glue applying assembly 2; still another possibility is that the first substrate layer 1 is moved in a first direction and the glue applying assembly 2 is moved back and forth in the first direction, in such a way that the glue applying assembly 2 is moved in a direction away from the glued first substrate layer 1, i.e. in the opposite direction to the direction indicated by the lower arrow in fig. 1. And when the first base material layer 1 reaches the boundary, the first base material layer 1 stops moving, the sizing assembly 2 returns to the boundary of the glue layer 6 on the sized first base material layer 1 along the first direction, and then the first base material layer 1 moves towards the first direction and the sizing assembly 2 moves towards the direction opposite to the first direction.

Among several kinds of modes above, first kind can keep the continuity of 1 glueing process of first substrate layer to a certain extent, need not to stop in process of production, can carry out glueing operation to 1 of first substrate layer continuously, improves production efficiency.

In this embodiment, a plurality of glue applying assemblies 2 may 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 assemblies 2 may be the same or different. Through filling different types of glue 3 in the gluey subassembly 2 of difference, can be so that the physical properties of the glue film 6 that forms on first substrate layer 1 is different, and then reach the local physical properties of the membrane material after the shaping different, more be applicable to as the material of preparation loudspeaker diaphragm. Each glue application assembly 2 may store the same or different glue (two or more glues), and it may be achieved that the glue 3 at different positions on the glue application path in the second direction at a time is of different kind. Along with the continuous feeding of first substrate layer 1, glueing subassembly 2 circulation is reciprocal glueing, finally obtains the local adjustable plane membrane material of physical properties.

In this embodiment, the length of a plurality of glueing subassemblies 2 glueing along the second direction is less than the width of first substrate layer 1, and this in-process needs glueing subassembly 2 along second direction reciprocating motion to each position department of guarantee first substrate layer 1 is all glued, strengthens the joint strength of first substrate layer 1 and second substrate layer 4. In one embodiment, the first substrate layer 1 may be movable in a first direction and the sizing assembly 2 may be reciprocated in a second direction, wherein the first direction and the second direction may be perpendicular to each other.

S3, attaching the second substrate layer 4 to the adhesive layer 6, wherein the adhesive layer 6 is arranged between the first substrate layer 1 and the second substrate layer 4;

as shown in fig. 1, a roller 5 may be disposed above the first substrate layer 1 near the left side, the second substrate layer 4 is disposed between the glue layer 6 and the roller 5, and the second substrate layer 4 may be connected to the first substrate layer 1 through the glue layer by pressing the roller 5; through the rotation of gyro wheel 5, can make the first substrate layer 1 and the second substrate layer 4 of gluing together move along the first direction in step, both can make first substrate layer 1 and the second substrate layer 4 that link together shift out the platform along the first direction, and on the other hand can be to subsequent first substrate layer 1 and the 4 application of force motion of second substrate layer, the continuity of first substrate layer 1 of guarantee gyro wheel 5 compaction and second substrate layer 4.

The second substrate layer 4 may be one of polymer material films made of: polyether ether ketone, polyarylate, polyethylene naphthalate, polyester resin, polycarbonate, polyetherimide, polyphenylene sulfide resin, tetraphenyl ethylene, thermoplastic polyurethane elastomer rubber, and thermoplastic-based composite material. The type of the second substrate layer 4 may be the same as that of the first substrate layer 1 or may be different from that of the first substrate layer 1 when the film material is produced.

In this embodiment, the roller 5 and the platform cooperate to press the second substrate layer 4 on the first substrate layer 1 after the glue application, so that the first substrate layer 1 is glued with the second substrate layer 4, the roller 5 can be prevented from moving relative to the second substrate layer 4 under the rotation of the roller 5, and the second substrate layer 4 is rolled to damage the local structure of the second substrate layer 4.

S4-laminating the first substrate layer 1 and the second substrate layer 4. Specifically, in some embodiments, rollers 5 may be configured to press the second substrate layer 4 against the glue layer 6; the roller 5 rotates to drive the film material to move along the first direction.

In this embodiment, the feeding of the first substrate layer 1, the second substrate layer 4 and the second substrate layer 4 can be performed synchronously, and the distance between the first substrate layer 1 and the roller 5 can be slightly smaller than the sum of the thicknesses of the glue layer 6 and the second substrate layer 4. Therefore, in the force application process of the roller 5, the first substrate layer 1, the glue layer 6 and the second substrate layer 4 can be pressed to form a film material with a thickness not greater than a set thickness. In another embodiment, a pressure sensor may be installed on the contact surface of the roller 5 and the second substrate layer 4, so that the pressure value of the roller 5 to the second substrate layer 4 is maintained at a set value, so as to ensure that the pressure values received by the roller 5 at each position of the first substrate layer 1, the adhesive layer 6, and the second substrate layer 4 are equal.

The film material manufactured and molded by the method of the embodiment adopts at least two sizing assemblies 2 to size the first substrate layer 1 in the feeding movement process in the sizing process, and the types of the glue 3 in the different sizing assemblies 2 and the glue spraying power of the sizing assemblies 2 are set to be different; and the second substrate layer 4 is pressed on the formed adhesive layer 6, and finally the film material with the locally adjustable physical property is obtained, so that the film material is suitable for adjusting the locally physical property of the loudspeaker diaphragm to improve the sound quality of the loudspeaker.

In some embodiments, the glue applying assembly 2 is one of a glue applying nozzle and a wire jig, the relative positions of the plurality of glue applying assemblies 2 are fixed, and the glue in the plurality of glue applying assemblies 2 is the same or different in type. Glue 3 that gluey shower nozzle can store in the gluey subassembly 2 of operation sprays to first substrate layer 1 in this embodiment, and the spun is glued 3 and is increased gradually by the area of injector head towards first substrate layer in the spraying process to carrying out atomizing operation to gluing 3 in the spraying process, the messenger sprays glues 3 and can fall on first substrate layer 1 uniformly, avoids the column to glue the distribution of influence gluey 3 on first substrate layer 1. The reason why the columnar glue 3 influences the distribution of the glue 3 on the first base material layer 1 is that the glue 3 needs to be pressed by the roller 5, and in the pressing process, the glue 3 may not flow according to a set trend between the first base material layer 1 and the second base material layer 4 due to the pressure influence, so that the physical property of the formed film material is influenced.

This embodiment sprays gluey 3 through the gluey shower nozzle on first substrate layer 1, perhaps glues 3 through the printing of silk screen tool on first substrate layer 1, can make gluey 3 of difference fix in gluey subassembly 2 in the settlement position between first substrate layer 1 and second substrate layer 4, the accuracy of the adjustable position of physical property on the membrane material after the guarantee shaping.

In some embodiments, before gluing the set position on the first substrate layer 1, the method further comprises: a positioning hole 11 is arranged along the first direction and penetrates through the first base material layer 1 at the edge of the first base material layer 1; gluing the set position on the first base material layer 1, comprising: determining a set position based on the positioning hole 11; the glue applying assembly 2 is aligned to a set position based on the positioning holes 11.

In this embodiment, the positions of the positioning holes 11 formed in the first substrate layer 1 may be positions close to the edges of the two sides of the first substrate layer 1 along the first direction, the glue applying assembly 2 may determine the accurate position to be applied with glue on the first substrate layer 1 by determining the positions of the positioning holes 11 on the first substrate layer 1, the positioning holes 11 may provide a reference for the glue applying assembly 2 to determine the aforementioned set position, and the accuracy of determining the glue applying position on the first substrate layer 1 by the glue applying assembly 2 is improved.

The embodiment of the utility model provides a second aspect is to introducing the membrane material of making according to each step in the above-mentioned method. FIG. 3 is a schematic structural view of an embodiment of the film of the present invention; FIG. 4 is a schematic view of the cross-sectional structure A-A of the membrane material of the present invention shown in FIG. 3; fig. 5 is a schematic view of the cross-sectional structure B-B of the film material of the present invention shown in fig. 3. As shown in fig. 3 to 5, the film material may include a first substrate layer 1, a second substrate layer 4, and a glue layer 6, where the glue layer 6 is disposed between the first substrate layer 1 and the second substrate layer 4, and connects the first substrate layer 1 and the second substrate layer 4, and the glue layer 6 includes a first glue region 61 and a second glue region 62 at a designated position where the first substrate layer 1 and the second substrate layer 4 correspond to each other; the first glue area 61 is connected to the second glue area 62.

The first glue area 61 and the second glue area 62 are part of the glue layer 6, and the glue 3 forming the glue layer 6 may be of the same or different material. The first glue region 61 may be a uv cured adhesive layer. The second glue region 62 may be a uv cured adhesive layer or a solvent adhesive layer. The ultraviolet curing adhesive layer is a glue layer formed by curing ultraviolet curing (UV glue) glue after ultraviolet irradiation. The solvent bonding layer is a glue layer formed by heating and solidifying solvent glue. However, if the first glue region 61 and the second glue region 62 are made of the same material, for example, both are ultraviolet curable adhesive layers, they may have different physical properties and damping properties depending on the component content ratio or the composition. The ultraviolet curing adhesive layer or the solvent adhesive layer is beneficial to the curing and forming process of the adhesive layer part during the manufacturing of the film material.

The kind of glue layer 6 in the position of difference between above-mentioned this embodiment provides, film material, place in first substrate layer 1 and second substrate layer 4 can be different, perhaps component content is different, makes the local physical characteristics of film material of this embodiment can adjust, and the local physical characteristics of film material is adjusted to the preparation vibrating diaphragm in-process, improves the sound quality of speaker.

In some embodiments, the first substrate layer 1 and the second substrate layer 4 are made of at least one of the following materials: polyether ether ketone, polyarylate, polyethylene naphthalate, polyester resin, polycarbonate, polyetherimide, polyphenylene sulfide resin, tetraphenyl ethylene, thermoplastic polyurethane elastomer rubber, and thermoplastic-based composite material.

In some embodiments, the film may also be provided as a multi-layer structure, such as 5 layers, 7 layers, etc., wherein the substrate layer connected by the same glue layer 6 may be two same first substrate layers 1 or second substrate layers 4, or may be the first substrate layers 1 and the second substrate layers 4 as in the above embodiments. The overall physical property and the damping property of the membrane material can be adjusted through the multiple layers (with different properties) of the glue layers 6, and the performance of the loudspeaker can be further improved after the formed membrane material is applied to the vibrating diaphragm of the loudspeaker. The above can be adjusted according to the output characteristics required by the speaker in actual situations.

Further, the embodiment of the utility model provides a still relate to a use the vibrating diaphragm that above-mentioned membrane material preparation formed, this vibrating diaphragm is formed through mould shaping, the preparation of edge cutting step by above-mentioned membrane material. The membrane material is formed by compounding a plurality of layers of base materials and bonding layers, and different physical properties are obtained at different positions according to different areas of the bonding layers, so that the membrane material has good vibration properties.

Fig. 6 is a schematic structural diagram of an embodiment of the diaphragm of the present invention; fig. 7 is a schematic structural diagram of another embodiment of the diaphragm of the present invention; fig. 8 is a schematic structural diagram of another embodiment of the diaphragm of the present invention. As shown in fig. 6 to 8, the diaphragm manufactured by the foregoing second aspect and various preferred embodiments may obtain different physical properties at different positions of the film material according to different patterns of the first glue region 61, so as to achieve self-adjustment of the physical properties of the local region of the diaphragm.

The four corner regions of the diaphragm can be provided with patterns, and the physical properties of the diaphragm region with the patterns are different from those of the plane region of the diaphragm. The vibration characteristics of the pattern areas and the plane areas at the four corners of the vibrating diaphragm are different when the vibrating diaphragm vibrates, and the loudspeaker characteristics are accurately adjusted. The specific adjustment may be determined according to the shape of the arranged patterns and the density of the patterns, and the embodiment is not limited in this respect. The physical properties of different regions of the diaphragm can be adjusted by the relative thicknesses of the first glue region 61 and the second glue region 62, or by the difference in the materials and the component contents of the first glue region 61 and the second glue region 62.

In some other embodiments, the characteristics of the speaker can be adjusted by changing the size of the patterned and flat areas on the diaphragm and the physical characteristics of each area. Wherein different patterns, different planes may also have different physical properties.

For example, the physical properties of the patterned areas at the four corners of the diaphragm are relatively small, and the physical properties of the planar areas are relatively large. The pattern area has relatively high rigidity and high hardness, and is not easy to generate wrinkles during vibration. And the rigidity of the plane area is relatively small, so that the resonance frequency of the loudspeaker can be effectively reduced, the bandwidth is expanded, and the performance is improved.

Further, the utility model provides a speaker, this speaker include the support and fix the voice coil loudspeaker voice coil in the support, are connected with the vibrating diaphragm that relates as above-mentioned third aspect on the surface of aforementioned voice coil loudspeaker voice coil. The loudspeaker of the present embodiment is tuned by local physical properties of the diaphragm. And then the characteristic of accurate regulation speaker promotes the characteristic bandwidth of speaker, anti crease ability, makes the performance of speaker show the promotion.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (6)

1. The membrane material is characterized by comprising a first base material layer (1), a second base material layer (4) and a glue layer (6), wherein the glue layer (6) is arranged between the first base material layer (1) and the second base material layer (4) and is used for connecting the first base material layer (1) with the second base material layer (4), and the glue layer (6) comprises a first glue area and a second glue area at the designated position corresponding to the first base material layer (1) and the second base material layer (4); the first glue area is connected with the second glue area.

2. Film according to claim 1, wherein the first glue areas are of the same or different glue type than the second glue areas.

3. The film of claim 1, wherein the first glue region is a photosensitive glue and the second glue region is a photosensitive glue or a solvent glue.

4. A film according to any one of claims 1 to 3, wherein the first substrate layer (1) and the second substrate layer (4) are each made of at least one of the following materials:

polyether ether ketone, polyarylate, polyethylene naphthalate, polyester resin, polycarbonate, polyetherimide, polyphenylene sulfide resin, tetraphenyl ethylene, thermoplastic polyurethane elastomer rubber, and thermoplastic-based composite material.

5. A diaphragm made of the film material according to any one of claims 1 to 4.

6. A loudspeaker comprising a support and a voice coil fixed in the support, wherein the diaphragm of claim 5 is attached to a surface of the voice coil.

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