CN112261548A - Vibrating diaphragm and sound production device - Google Patents
Vibrating diaphragm and sound production device Download PDFInfo
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- CN112261548A CN112261548A CN202011053258.XA CN202011053258A CN112261548A CN 112261548 A CN112261548 A CN 112261548A CN 202011053258 A CN202011053258 A CN 202011053258A CN 112261548 A CN112261548 A CN 112261548A
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- layer
- substrate layer
- adhesive layer
- diaphragm
- base material
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention provides a vibrating diaphragm which comprises an adhesive layer, a first substrate layer and a second substrate layer, wherein the first substrate layer and the second substrate layer are respectively adhered and fixed on two opposite sides of the adhesive layer; the first base material layer and the second base material layer are respectively attached to two opposite sides of the adhesive layer body, and the convex columns are embedded into the holes, so that the adhesive layer, the first base material layer and the second base material layer form an integrated structure. The invention also provides a sound production device applying the vibrating diaphragm. Compared with the prior art, the vibrating diaphragm has the advantages of small difference of material characteristics of all layers, weak material nonlinearity, high reliability and good acoustic performance.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic conversion, in particular to a vibrating diaphragm and a sound production device applied to a portable electronic product.
[ background of the invention ]
With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of mobile phones are very diverse, one of them is a high-quality music function, and therefore, a sound generating device for playing sound is widely applied to the current smart mobile devices. The sound production device comprises a vibrating diaphragm for vibrating and producing sound, and the acoustic performance of the vibrating diaphragm is an important performance of the sound production device.
The diaphragm of the related art includes an adhesive layer, and a first substrate layer and a second substrate layer respectively adhered and fixed to opposite sides of the adhesive layer.
However, in the related art, the first substrate layer, the adhesive layer and the second substrate layer of the diaphragm stacked in sequence form a composite structure material, and the composite structure has a risk of interlayer separation under extreme working conditions (such as high temperature, low temperature and large vibration amplitude), so that the reliability of the diaphragm is low. In addition, because the elastic modulus of the first substrate layer and the elastic modulus of the second substrate layer are far larger than the elastic modulus of the adhesive layer, and the damping characteristic of the first substrate layer and the damping characteristic of the second substrate layer are far smaller than the damping characteristic of the adhesive layer, the performance change of the vibrating diaphragm material along the thickness direction is severe, the nonlinearity of the vibrating diaphragm material is strong, and the vibration amplitude is asymmetric when the vibrating diaphragm vibrates, so that the distortion of the sound generating device is high, and the acoustic performance of the sound generating device cannot achieve an ideal effect.
Therefore, there is a need to provide a new diaphragm and sound generating device to solve the above-mentioned technical problems.
[ summary of the invention ]
The invention aims to provide a diaphragm with small difference of material characteristics of each layer, weak material nonlinearity and high reliability and a sound production device with good acoustic performance.
In order to achieve the purpose, the invention provides a vibrating diaphragm which comprises an adhesive layer, a first substrate layer and a second substrate layer, wherein the first substrate layer and the second substrate layer are respectively adhered and fixed on two opposite sides of the adhesive layer; the first base material layer and the second base material layer are respectively attached to two opposite sides of the adhesive layer body, and the convex columns are embedded into the holes, so that the adhesive layer, the first base material layer and the second base material layer form an integrated structure.
Preferably, the convex columns comprise a plurality of convex columns, and the plurality of convex columns are distributed in an array.
Preferably, the holes are formed in one sides, close to the adhesive layer, of the first substrate layer and the second substrate layer, the protruding columns comprise first protruding columns protruding and extending from one side, close to the first substrate layer, of the first substrate layer and second protruding columns protruding and extending from one side of the second substrate layer, and each first protruding column and one corresponding second protruding column are arranged on two opposite sides of the adhesive layer body in a facing mode.
Preferably, the hole penetrates through the first substrate layer and/or the second substrate layer.
Preferably, the hole penetrates through the first substrate layer and the second substrate layer, and the surface of one side, away from the adhesive layer body, of the first convex column is flush with the surface of one side, away from the adhesive layer body, of the first substrate layer body; the surface of one side, far away from the adhesive layer body, of the second convex column is flush with the surface of one side, far away from the adhesive layer body, of the second base material layer body.
Preferably, the diaphragm is manufactured by a liquefaction, injection and solidification process.
Preferably, the adhesive layer is made of any one of acrylic acid, rubber and silica gel, the first substrate layer is made of any one of polyethylene terephthalate, polyether ether ketone and polyetherimide, and the second substrate layer is made of any one of polyethylene terephthalate, polyether ether ketone and polyetherimide.
The invention also provides a sounding device, which comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate and sound, wherein the vibration system comprises the vibrating diaphragm.
Compared with the prior art, the vibrating diaphragm and the sound production device are characterized in that the vibrating diaphragm is arranged to be a first base material layer, a gluing layer stack and a second base material layer which are sequentially stacked, the gluing layer body of the gluing layer is provided with protruding extending convex columns, meanwhile, the first base material layer and/or the second base material layer are/is provided with concave holes, the first base material layer and the second base material layer are respectively attached to the two opposite sides of the gluing layer body, and the convex columns are embedded into the holes, so that the gluing layer, the first base material layer and the second base material layer form an integrated structure. Because the adhesive layer is respectively embedded into the first base material layer and the second base material layer to form a whole, on one hand, the structure can improve the shearing performance among the layers of the vibrating diaphragm, and the stripping resistance and the layering resistance of the vibrating diaphragm are improved, so that the reliability of the vibrating diaphragm is high; on the other hand, the material characteristic difference such as the elastic modulus and the damping of each layer of the vibrating diaphragm is reduced, so that the nonlinearity of the material along the thickness direction is reduced, the amplitude symmetry of the vibrating diaphragm is improved, the distortion of the sound production device can be reduced, and the acoustic performance of the sound production device is good.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic perspective view of a diaphragm according to the present invention;
FIG. 2 is an exploded view of a partial perspective structure of a diaphragm according to the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 4 is a schematic perspective view of a sound production device according to the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a diaphragm 100. The diaphragm 100 comprises an adhesive layer 1, and a first substrate layer 2 and a second substrate layer 3 which are respectively adhered and fixed on two opposite sides of the adhesive layer 1.
The adhesive layer 1 is respectively adhered and fixed with the first substrate layer 2 and the second substrate layer 3 in a mode of adhesive or resin curing. Of course, other adhesive fastening means are also possible.
Specifically, the adhesive layer 1 includes an adhesive layer body 11 and a first convex column 121 and a second convex column 122 protruding and extending from the adhesive layer body 11. In this embodiment, the convex pillar 12 includes a first convex pillar 121 protruding and extending from a side close to the first substrate layer 2 and a second convex pillar 122 protruding and extending from a side of the second substrate layer 3.
The first substrate layer 2 and the second substrate layer 3 are both common substrates in the art, and specific models and parameters can be selected and used by those skilled in the art according to actual needs, which are not described in detail herein.
The first base material layer 2 and/or the second base material layer 3 are/is recessed to form a hole 10 in the direction away from the adhesive layer 1 from the side close to the adhesive layer 1. In this embodiment, the holes 10 are formed on both sides of the first substrate layer 2 and the second substrate layer 3 close to the adhesive layer 1. The holes 10 penetrate through the first substrate layer 2 and/or the second substrate layer 3. The hole 10 is used for forming a fixing structure with the convex column 12.
The first substrate layer 2 and the second substrate layer 3 are respectively attached to two opposite sides of the adhesive layer body 11, and the convex columns 12 are embedded into the holes 10. Specifically, the first convex column 121 is embedded in the first substrate layer 2, and the second convex column 122 is embedded in the second substrate layer 3, so that the adhesive layer 1, the first substrate layer 2, and the second substrate layer 3 form an integrated structure. The structure is simple in manufacturing process, the adhesive layer 1, the first substrate layer 2 and the second substrate layer 3 form an integral structure which is firm and reliable, so that the bonding strength of each layer of the vibrating diaphragm 100 is high, the shearing performance between each layer of the vibrating diaphragm 100 is improved, the stripping resistance and the layering resistance of the vibrating diaphragm 100 are improved, and the reliability of the vibrating diaphragm 100 is high.
Since both the elastic modulus of the first base material layer 2 and the elastic modulus of the second base material layer 3 are greater than the elastic modulus of the adhesive layer 1, both the damping characteristics of the first base material layer 2 and the damping characteristics of the second base material layer 3 are less than the damping characteristics of the adhesive layer 1. According to the structure, the first convex column 121 is wrapped in the first substrate layer 2, and the second convex column 122 is wrapped in the second substrate layer 3, so that the difference between the elastic modulus of the first substrate layer 2 and the elastic modulus of the second substrate layer 3 and the elastic modulus of the adhesive layer 1 is reduced, the difference between the damping characteristic of the first substrate layer 2 and the damping characteristic of the second substrate layer 3 and the damping characteristic of the adhesive layer 1 is reduced, the nonlinearity of the material of the vibrating diaphragm 100 in the thickness direction is reduced, and the amplitude symmetry of the vibrating diaphragm 100 is improved.
In this embodiment, the convex pillars 12 include a plurality of convex pillars 12, and the plurality of convex pillars 12 are distributed in an array. The first protruding column 121 includes a plurality of protruding columns. The first protruding columns 121 are distributed in a matrix. The second protruding pillar 122 includes a plurality of protruding pillars. The second posts 122 are distributed in a matrix. The adhesive layer 1, the first substrate layer 2 and the second substrate layer 3 are more firm due to the multiple first convex columns 121 and the multiple second convex columns 122, so that the stripping resistance and the delamination resistance of the diaphragm 100 are improved, the uniformity of the structural material is good, and the acoustic performance of the diaphragm 100 is good when the diaphragm 100 vibrates and generates sound.
In order to improve the uniformity of the material of the diaphragm 100, each of the first protruding columns 121 and the corresponding one of the second protruding columns 122 are disposed opposite to two opposite sides of the adhesive layer body 11. This structure makes along one of the 11 vertical direction of adhesive layer sets up of first projection 121 and one the center pin of second projection 122 is same, thereby makes when vibrating diaphragm 100 vibrates the sound production, the vibration of first substrate layer 2 with the vibration of second substrate layer 3 all with the vibration of adhesive layer 1 is synchronous, thereby makes acoustic performance is good when vibrating diaphragm 100 vibrates the sound production.
In this embodiment, the holes 10 penetrate through the first substrate layer 2 and the second substrate layer 3. The surface of one side of the first convex column 121, which is far away from the adhesive layer body 11, is flush with the surface of one side of the first base material layer body 21, which is far away from the adhesive layer body 11. The surface of the second convex column 122 far away from the adhesive layer body 11 is flush with the surface of the second base material layer body 31 far away from the adhesive layer body 11. This structure makes the surfaces of the opposite sides of the diaphragm 100 smooth, which is advantageous for improving the acoustic performance of the diaphragm 100.
In this embodiment, the adhesive layer 1 is made of any one of acrylic acid, rubber and silica gel, the first substrate layer 2 is made of any one of Polyethylene terephthalate (PET), poly-ether-ether-ketone (PEEK) and Polyetherimide (PEI), and the second substrate layer 3 is made of any one of Polyethylene terephthalate (PET), polyetheretherketone and Polyetherimide (PEI).
In this embodiment, the diaphragm 100 is manufactured by a liquefaction, injection and solidification process, and the liquefaction, injection and solidification process is to inject the liquefied adhesive layer 1 between the first substrate layer 2 and the second substrate layer 3, and to solidify after the hole 10 of the first substrate layer 2 and the hole 10 of the second substrate layer 3 are filled. For example: the adhesive layer 1 is made of acrylic acid, when the adhesive layer is manufactured, firstly, the holes 10 are prefabricated in the first substrate layer 2, the holes 10 are prefabricated in the second substrate layer 3, then the first substrate layer 2 and the second substrate layer 3 are arranged at intervals and fixed in a mold clamping plate, then liquid acrylic acid is filled between the first substrate layer 2 and the second substrate layer 3, the mold is filled with the liquid acrylic acid with good flowing property, and the cured acrylic acid forms the adhesive layer body 11 between the first substrate layer 2 and the second substrate layer 3; the cured acrylic acid forms the first convex column 121 in the hole 10 of the first substrate layer 2; the cured acrylic acid forms the second convex column 122 in the hole 10 of the second substrate layer 3, and meanwhile, the adhesive layer 1, the first substrate layer 2 and the second substrate layer 3 form an integrated structure. The structure reduces the difference of the elastic modulus, damping and other material characteristics of each layer of the vibrating diaphragm 100, thereby reducing the nonlinearity of the material along the thickness direction, improving the symmetry of the vibrating diaphragm 100 amplitude, and reducing the distortion of a sound production device.
Referring to fig. 4, the present invention further provides a sound generating device 200. The sounder device 200 includes a vibration system 5 and a magnetic circuit system 6 for driving the vibration system 5 to vibrate and generate sound. The vibration system 5 includes the diaphragm 100.
In this embodiment, the sounder device 200 further includes a basin frame 4, and the vibration system 5 and the magnetic circuit system 6 are respectively fixed to the basin frame 4. The diaphragm 100 is fixed to the frame 4. Because the difference of the elastic modulus, damping and other material characteristics of each layer of the diaphragm 100 is reduced, the nonlinearity of the material in the thickness direction is reduced, the amplitude symmetry of the diaphragm 100 is improved, the distortion of the sound-generating device 200 can be reduced, and the acoustic performance of the sound-generating device 200 is good.
Compared with the prior art, the vibrating diaphragm and the sound production device are characterized in that the vibrating diaphragm is arranged to be a first base material layer, a gluing layer stack and a second base material layer which are sequentially stacked, the gluing layer body of the gluing layer is provided with protruding extending convex columns, meanwhile, the first base material layer and/or the second base material layer are/is provided with concave holes, the first base material layer and the second base material layer are respectively attached to the two opposite sides of the gluing layer body, and the convex columns are embedded into the holes, so that the gluing layer, the first base material layer and the second base material layer form an integrated structure. Because the adhesive layer is respectively embedded into the first base material layer and the second base material layer to form a whole, on one hand, the structure can improve the shearing performance among the layers of the vibrating diaphragm, and the stripping resistance and the layering resistance of the vibrating diaphragm are improved, so that the reliability of the vibrating diaphragm is high; on the other hand, the material characteristic difference such as the elastic modulus and the damping of each layer of the vibrating diaphragm is reduced, so that the nonlinearity of the material along the thickness direction is reduced, the amplitude symmetry of the vibrating diaphragm is improved, the distortion of the sound production device can be reduced, and the acoustic performance of the sound production device is good.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (8)
1. A vibrating diaphragm comprises an adhesive layer, a first substrate layer and a second substrate layer, wherein the first substrate layer and the second substrate layer are respectively adhered and fixed on two opposite sides of the adhesive layer; the first base material layer and the second base material layer are respectively attached to two opposite sides of the adhesive layer body, and the convex columns are embedded into the holes, so that the adhesive layer, the first base material layer and the second base material layer form an integrated structure.
2. The diaphragm of claim 1, wherein the plurality of protruding pillars are distributed in an array.
3. The diaphragm of claim 2, wherein the first substrate layer and the second substrate layer are both provided with the hole on one side thereof adjacent to the adhesive layer, the protruding columns include a first protruding column protruding and extending from one side adjacent to the first substrate layer and a second protruding column protruding and extending from one side of the second substrate layer, and each of the first protruding columns and the corresponding one of the second protruding columns are disposed opposite to two opposite sides of the adhesive layer body.
4. The diaphragm of claim 3, wherein the hole penetrates through the first substrate layer and/or the second substrate layer.
5. The diaphragm of claim 4, wherein the hole penetrates through the first substrate layer and the second substrate layer, and a surface of one side of the first convex column, which is far away from the adhesive layer body, is flush with a surface of one side of the first substrate layer body, which is far away from the adhesive layer body; the surface of one side, far away from the adhesive layer body, of the second convex column is flush with the surface of one side, far away from the adhesive layer body, of the second base material layer body.
6. The diaphragm of claim 4, wherein the diaphragm is manufactured by a liquefaction, injection and solidification process.
7. The diaphragm of claim 1, wherein the adhesive layer is made of any one of acrylic acid, rubber and silica gel, the first substrate layer is made of any one of polyethylene terephthalate, polyetheretherketone and polyetherimide, and the second substrate layer is made of any one of polyethylene terephthalate, polyetheretherketone and polyetherimide.
8. A sound-producing device comprising a vibration system and a magnetic circuit system for driving the vibration system to vibrate and produce sound, wherein the vibration system comprises the diaphragm according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011053258.XA CN112261548A (en) | 2020-09-29 | 2020-09-29 | Vibrating diaphragm and sound production device |
| PCT/CN2020/129789 WO2022068012A1 (en) | 2020-09-29 | 2020-11-18 | Diaphragm and sound producing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011053258.XA CN112261548A (en) | 2020-09-29 | 2020-09-29 | Vibrating diaphragm and sound production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112261548A true CN112261548A (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011053258.XA Pending CN112261548A (en) | 2020-09-29 | 2020-09-29 | Vibrating diaphragm and sound production device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112261548A (en) |
| WO (1) | WO2022068012A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5718197A (en) * | 1980-07-07 | 1982-01-29 | Pioneer Electronic Corp | Diaphragm for speaker |
| CN203775395U (en) * | 2013-11-06 | 2014-08-13 | 深圳市摩码科技有限公司 | Composite diaphragm for loudspeaker |
| CN207070312U (en) * | 2017-07-03 | 2018-03-02 | 歌尔科技有限公司 | Vibrating diaphragm, loudspeaker monomer and electronic equipment for loudspeaker |
| CN208638645U (en) * | 2018-08-04 | 2019-03-22 | 瑞声科技(新加坡)有限公司 | Vibrating diaphragm and loudspeaker |
| CN111531978A (en) * | 2020-04-20 | 2020-08-14 | 深圳市航天新材科技有限公司 | Stretchable composite vibrating diaphragm |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1043115A (en) * | 1988-12-10 | 1990-06-20 | 钱宏诚 | Wedge hole forming method for bound surface |
| CN103475981B (en) * | 2013-08-27 | 2017-05-17 | 歌尔股份有限公司 | loudspeaker vibration system |
| CN203883985U (en) * | 2014-05-26 | 2014-10-15 | 歌尔声学股份有限公司 | Loudspeaker diaphragm |
| CN106792375B (en) * | 2016-12-28 | 2019-09-17 | 歌尔股份有限公司 | Diaphragm of loudspeaker component |
| CN208104277U (en) * | 2018-03-09 | 2018-11-16 | 惠州市金润佳光电科技有限公司 | A kind of release film that bonding force is strong |
| CN210265409U (en) * | 2019-06-26 | 2020-04-07 | 惠州市德赛西威智能交通技术研究院有限公司 | Structure for improving bonding strength |
-
2020
- 2020-09-29 CN CN202011053258.XA patent/CN112261548A/en active Pending
- 2020-11-18 WO PCT/CN2020/129789 patent/WO2022068012A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5718197A (en) * | 1980-07-07 | 1982-01-29 | Pioneer Electronic Corp | Diaphragm for speaker |
| CN203775395U (en) * | 2013-11-06 | 2014-08-13 | 深圳市摩码科技有限公司 | Composite diaphragm for loudspeaker |
| CN207070312U (en) * | 2017-07-03 | 2018-03-02 | 歌尔科技有限公司 | Vibrating diaphragm, loudspeaker monomer and electronic equipment for loudspeaker |
| CN208638645U (en) * | 2018-08-04 | 2019-03-22 | 瑞声科技(新加坡)有限公司 | Vibrating diaphragm and loudspeaker |
| CN111531978A (en) * | 2020-04-20 | 2020-08-14 | 深圳市航天新材科技有限公司 | Stretchable composite vibrating diaphragm |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022068012A1 (en) | 2022-04-07 |
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Application publication date: 20210122 |