CN111131973A - Vibrating diaphragm structure for earphone - Google Patents
Vibrating diaphragm structure for earphone Download PDFInfo
- Publication number
- CN111131973A CN111131973A CN202010038824.3A CN202010038824A CN111131973A CN 111131973 A CN111131973 A CN 111131973A CN 202010038824 A CN202010038824 A CN 202010038824A CN 111131973 A CN111131973 A CN 111131973A
- Authority
- CN
- China
- Prior art keywords
- edge
- intermediate medium
- diaphragm structure
- medium piece
- earphone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 239000000725 suspension Substances 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052790 beryllium Inorganic materials 0.000 claims description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002041 carbon nanotube Substances 0.000 claims description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims 1
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004697 Polyetherimide Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 3
- 229920001230 polyarylate Polymers 0.000 description 3
- 229920001601 polyetherimide Polymers 0.000 description 3
- 239000011112 polyethylene naphthalate Substances 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- -1 polyethylene naphthalate Polymers 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/127—Non-planar diaphragms or cones dome-shaped
-
- 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
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention relates to the technical field of earphones, in particular to a vibrating diaphragm structure for an earphone, which comprises a spherical top positioned in the center and a suspended edge positioned on the peripheral edge, wherein an intermediate medium piece is arranged between the spherical top and the suspended edge. Through set up middle medium spare between ball top and outstanding limit, harder ball top and softer outstanding limit are bridged by the middle medium spare that soft or hard is moderate, can reduce the division that produces when vibrating, phenomenon such as vibration delay to reduce the sound production distortion of earphone, let the high frequency sound of earphone purer, more dynamic and listening. The invention has the advantages of meniscus-shaped overall section, capability of being called a moon-shaped diaphragm structure, high technical content, suitability for most earphones and wide market prospect.
Description
Technical Field
The invention relates to the technical field of earphones, in particular to a vibrating diaphragm structure for an earphone.
Background
For the most commonly used moving coil earphone, there are many factors affecting the sound quality, and the diaphragm is one of the key components that relate to whether the earphone can have good sound. The diaphragm is a sensitive element to magnetic field changes, which are caused by the change of the magnetic field when an electric signal passes through the coil, resulting in the deformation of the diaphragm under force. Because the electric signal changes very fast, leads to the high-speed vibration of vibrating diaphragm, and the vibration transmission of rethread vibrating diaphragm is for the air to the sound wave has been produced. In this process, the quality of the diaphragm determines the overall quality of the earphone.
At present, most of plastic vibrating diaphragms for earphones are pressed into a whole on the market, and comprise a ball top positioned at the center and a suspension edge positioned on the peripheral edge of the ball top, wherein the front surface of the ball top is an upward convex spherical surface, the back surface of the ball top is an upward concave spherical surface, the suspension edge is annular, the cross section of the suspension edge is arc-shaped, and the rigidity of the plastic vibrating diaphragm is poor. In view of this, some manufacturers use a metal material with better rigidity to make the top portion of the diaphragm, and use a softer plastic to make the suspended edge portion of the diaphragm, so as to obtain the diaphragm with better rigidity, but the structure of the diaphragm has the following disadvantages: the ball top made of metal materials is heavy, the suspension edge made of softer plastics is light, and the vibrating diaphragm is prone to generate phenomena of large segmentation vibration, vibration delay and the like during vibration, so that sound distortion is caused.
Disclosure of Invention
The present invention is directed to a diaphragm structure for an earphone, which can reduce split vibration and vibration delay, and overcome the disadvantages of the prior art.
The aim of the invention is achieved by the following technical measures:
a vibrating diaphragm structure for an earphone comprises a ball top positioned in the center and a suspension edge positioned on the peripheral edge, wherein an intermediate medium piece is arranged between the ball top and the suspension edge, the inner end of the intermediate medium piece is connected with the ball top, and the outer end of the intermediate medium piece is connected with the suspension edge; wherein, the hardness of the material for manufacturing the ball top is greater than that of the material for manufacturing the intermediate medium piece, and the hardness of the material for manufacturing the intermediate medium piece is greater than that of the material for manufacturing the suspension edge; namely, the material for manufacturing the ball top is harder, the material for manufacturing the suspension edge is softer, and the material for manufacturing the intermediate medium piece is moderate in hardness.
Preferably, the dome is made of beryllium, titanium, magnesium-aluminum alloy, DIAMOND-LIKE CARBON (DLC, also called DIAMOND-LIKE CARBON coating), or CARBON nanotube.
Preferably, the intermediate medium member is made of PEN (polyethylene naphthalate), PEI (polyetherimide) or PEEK (polyetheretherketone).
Preferably, the suspension edge is made of PU (polyurethane), PET (polyethylene terephthalate) or PAR (polyarylate).
As a preferred scheme, the front surface of the top dome is an upward convex spherical surface, and the back surface of the top dome is an upward concave spherical surface; the suspension edge and the intermediate medium piece are both annular.
Preferably, the section of the intermediate medium member is in a V shape, a U shape or an S shape.
Preferably, the cross section of the suspension edge is in an upwardly arched circular arc shape or a horizontally placed 'S' shape.
Preferably, the outer diameter of the suspension edge is 8-50 mm.
The invention has the beneficial effects that: through set up middle medium spare between ball top and outstanding limit, harder ball top and softer outstanding limit are bridged by the middle medium spare that soft or hard is moderate, can reduce the division that produces when vibrating, phenomenon such as vibration delay to reduce the sound production distortion of earphone, let the high frequency sound of earphone purer, more dynamic and listening. The invention has the advantages of meniscus-shaped overall section, capability of being called a moon-shaped diaphragm structure, high technical content, suitability for most earphones and wide market prospect.
Drawings
Fig. 1 is a schematic cross-sectional structure of a preferred embodiment of the present invention.
Fig. 2 is an enlarged schematic view at a in fig. 1.
Fig. 3 is a schematic view of the back structure of the preferred embodiment of the present invention.
Reference numerals: 1-ball top, 2-suspension edge, 21-second inclined surface, 22-horizontal edge, 3-intermediate medium piece, 31-first inclined surface, 32-first cambered surface and 4-support ring.
Detailed Description
In order to explain the technical solution of the present invention in detail, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiment of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Referring to fig. 1 to 3, the diaphragm structure for an earphone of the present invention includes a dome 1 located at the center and a suspension edge 2 located at the peripheral edge, and an intermediate medium member 3 is disposed between the dome 1 and the suspension edge 2. The inner end of the middle medium piece 3 is connected with the top 1, and the outer end of the middle medium piece 3 is connected with the suspension edge 2; wherein, the hardness of the material for manufacturing the ball top 1 is greater than that of the material for manufacturing the intermediate medium part 3, and the hardness of the material for manufacturing the intermediate medium part 3 is greater than that of the material for manufacturing the suspension edge 2; namely, the material for manufacturing the ball top 1 is harder, the material for manufacturing the suspension edge 2 is softer, and the material for manufacturing the intermediate medium piece 3 is moderate in hardness. Like this, by harder dome 1 of soft or hard moderate intermediate medium piece 3 bridging and softer dangling limit 2, can reduce the phenomenon such as the segmentation vibration that produces during the vibration, vibration delay to reduce the sound production distortion of earphone, make the high frequency sound of earphone purer, more dynamic and listen. The hardness mentioned above, the Rockwell hardness being preferred in the present invention, is, for example: the Rockwell hardness of the ball top is 1 higher than that of the intermediate medium piece and 3 higher than that of the suspension edge is 2; as a next alternative, the hardness may be applied to brinell hardness, vickers hardness, mohs hardness, and the like.
As a preferred scheme, the dome 1 may be made of beryllium, titanium, magnesium-aluminum alloy, diamond-like or carbon nanotube, or may be made of hard metal or non-metal material, and these hard materials can reduce the full frequency distortion caused by the splitting vibration, so that the sound of the earphone is more realistic and full. The suspension edge 2 can be made of PU, PET or PAR, and the softer materials can increase the moving stroke of the diaphragm, so that the dynamic and transient state of sound is more excellent, the sound field is larger, and the low-frequency atmosphere sense is stronger; the outer diameter of the suspension edge 2 is 8-50 mm, and the earphone is suitable for most earphones. The intermediate medium piece 3 can be made of PEN, PEI or PEEK, and the materials are moderate in hardness and have good bridging transition effect, so that distortion caused by phenomena such as vibration delay and the like is reduced. The materials for the dome 1, the suspended edge 2, and the intermediate medium member 3 are only preferred materials for use in the present invention, and other materials that can be used are also within the scope of the present invention.
In the invention, the front surface of the top 1 is an upward convex spherical surface, and the back surface of the top 1 is an upward concave spherical surface; the suspension edge 2 and the intermediate medium piece 3 are both annular. The section of the intermediate medium member may be "V" shaped, "U" shaped or "S" shaped, and it should be noted that the shape of the intermediate medium member is only a preferred embodiment of the present invention, and other shapes conforming to the defined features of the present invention also belong to the protection scope of the present invention. The section of the overhanging edge can be in an upwardly arched arc shape or a horizontally placed "S" shape, and it should be noted that the shape of the overhanging edge is only a preferred scheme of the present invention, and other shapes conforming to the defined features of the present invention also belong to the protection scope of the present invention.
As shown in fig. 1 to 3, the specific structure of the present embodiment is as follows: the front surface of the top 1 is a convex spherical surface, and the back surface of the top 1 is a concave spherical surface; the suspension edge 2 and the intermediate medium piece 3 are both annular; the section of the suspension edge 2 is in an arc shape which is arched upwards, and the section of the intermediate medium piece 3 is in a V shape; a first inclined plane 31 is formed at the inner end of the intermediate medium piece 3, and the back surface of the first inclined plane 31 is stuck and fixed on the top 1; a first cambered surface 32 is formed at the outer end of the middle medium piece 3, and the front surface of the first cambered surface 32 is stuck and fixed on the suspension edge 2; a second inclined plane 21 is formed at the inner end of the suspension edge 2, and the back surface of the second inclined plane 21 is stuck and fixed on the front surface of the first inclined plane 31; the outer end of the hanging edge 2 is formed with a horizontal edge 22, and a support ring 4 is stuck on the back of the horizontal edge 22, and the support ring 4 can be a copper ring. Above-mentioned structure lets intermediate medium spare 3 inseparabler with the connection of dome 1, dangling limit 2 respectively, and intermediate medium spare 3 transition bridging's effect is better, can further reduce the phenomenon such as the segmentation vibration, the vibration time delay that produce when vibrating. Of course, the above described structure is only one preferred embodiment of the present invention, and all other embodiments obtained by a person skilled in the art without any inventive step based on the described embodiment belong to the protection scope of the present invention, for example: the first inclined surface 31 of the middle medium member 3 can be adhered to the front surface or the back surface of the dome 1 by glue, and the first cambered surface 32 of the middle medium member 3 can be adhered to the front surface or the back surface of the suspended edge 2 by glue, which belong to the protection scope of the present invention.
It should be emphasized again that the above embodiments are merely illustrative of the technical solutions of the present invention, and not restrictive to the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalent substitutions may be made to the technical solutions of the present invention.
Claims (10)
1. A diaphragm structure for an earphone, comprising a dome (1) at the center, a suspension edge (2) at the peripheral edge, characterized in that: an intermediate medium piece (3) is arranged between the ball top (1) and the suspension edge (2), the inner end of the intermediate medium piece (3) is connected with the ball top (1), and the outer end of the intermediate medium piece (3) is connected with the suspension edge (2); wherein, the hardness of the material for manufacturing the ball top (1) is greater than that of the material for manufacturing the intermediate medium piece (3), and the hardness of the material for manufacturing the intermediate medium piece (3) is greater than that of the material for manufacturing the suspension edge (2).
2. The diaphragm structure for an earphone according to claim 1, wherein: the ball top (1) is made of beryllium, titanium, magnesium-aluminum alloy, diamond-like or carbon nano tubes.
3. The diaphragm structure for an earphone according to claim 1, wherein: the intermediate medium piece (3) is made of PEN, PEI or PEEK.
4. The diaphragm structure for an earphone according to claim 1, wherein: the hanging edge (2) is made of PU, PET or PAR.
5. The diaphragm structure for an earphone according to claim 1, wherein: the front surface of the dome (1) is an upward convex spherical surface, and the back surface of the dome (1) is an upward concave spherical surface; the suspension edge (2) and the intermediate medium piece (3) are both annular.
6. The diaphragm structure for an earphone according to claim 5, wherein: the section of the intermediate medium piece (3) is V-shaped, U-shaped or S-shaped.
7. The diaphragm structure for an earphone according to claim 5, wherein: the section of the suspension edge (2) is in an upwardly arched arc shape or a horizontally placed S shape.
8. The diaphragm structure for an earphone according to claim 5, wherein: the section of the suspended edge (2) is in an arc shape which is arched upwards, and the section of the intermediate medium piece (3) is in a V shape; wherein, the inner end of the intermediate medium piece (3) is formed with a first inclined plane (31), and the back of the first inclined plane (31) is stuck and fixed on the top of the ball (1); the outer end of the middle medium piece (3) is formed with a first cambered surface (32), and the front surface of the first cambered surface (32) is stuck and fixed on the suspension edge (2).
9. The diaphragm structure for an earphone according to claim 8, wherein: a second inclined plane (21) is formed at the inner end of the suspension edge (2), and the back surface of the second inclined plane (21) is stuck and fixed on the front surface of the first inclined plane (31); the outer end of the hanging edge (2) is formed with a horizontal edge (22), and the back of the horizontal edge (22) is stuck with a support ring (4).
10. The diaphragm structure for an earphone according to claim 1, wherein: the outer diameter of the suspension edge (2) is 8-50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010038824.3A CN111131973A (en) | 2020-01-14 | 2020-01-14 | Vibrating diaphragm structure for earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010038824.3A CN111131973A (en) | 2020-01-14 | 2020-01-14 | Vibrating diaphragm structure for earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111131973A true CN111131973A (en) | 2020-05-08 |
Family
ID=70490593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010038824.3A Pending CN111131973A (en) | 2020-01-14 | 2020-01-14 | Vibrating diaphragm structure for earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111131973A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112839288A (en) * | 2021-01-09 | 2021-05-25 | 广州市声讯电子科技股份有限公司 | Special high-temperature-resistant transducer sound film |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015065623A (en) * | 2013-09-26 | 2015-04-09 | パナソニック株式会社 | Diaphragm, loudspeaker and electronic apparatus |
| CN204598298U (en) * | 2015-03-21 | 2015-08-26 | 歌尔声学股份有限公司 | Vibrating diaphragm assembly and be provided with the loud speaker of this vibrating diaphragm assembly |
| WO2018006535A1 (en) * | 2016-07-06 | 2018-01-11 | 北京爱德发科技有限公司 | Passive radiator and speaker |
| CN208258064U (en) * | 2018-04-28 | 2018-12-18 | 深圳市冠旭电子股份有限公司 | Vibrating diaphragm and loudspeaker |
| CN209314049U (en) * | 2019-01-10 | 2019-08-27 | 深圳市信维声学科技有限公司 | A kind of connection structure of the top dome of loudspeaker and sound film |
| CN209358766U (en) * | 2018-11-09 | 2019-09-06 | 深圳市冠旭电子股份有限公司 | Vibrating diaphragm and loudspeaker |
| CN110381428A (en) * | 2019-08-30 | 2019-10-25 | 湖南捷力泰科技有限公司 | Novel piezoelectric loudspeaker |
| CN210807635U (en) * | 2020-01-14 | 2020-06-19 | 东莞达电电子有限公司 | Vibrating diaphragm structure for earphone |
-
2020
- 2020-01-14 CN CN202010038824.3A patent/CN111131973A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015065623A (en) * | 2013-09-26 | 2015-04-09 | パナソニック株式会社 | Diaphragm, loudspeaker and electronic apparatus |
| CN204598298U (en) * | 2015-03-21 | 2015-08-26 | 歌尔声学股份有限公司 | Vibrating diaphragm assembly and be provided with the loud speaker of this vibrating diaphragm assembly |
| WO2018006535A1 (en) * | 2016-07-06 | 2018-01-11 | 北京爱德发科技有限公司 | Passive radiator and speaker |
| CN208258064U (en) * | 2018-04-28 | 2018-12-18 | 深圳市冠旭电子股份有限公司 | Vibrating diaphragm and loudspeaker |
| CN209358766U (en) * | 2018-11-09 | 2019-09-06 | 深圳市冠旭电子股份有限公司 | Vibrating diaphragm and loudspeaker |
| CN209314049U (en) * | 2019-01-10 | 2019-08-27 | 深圳市信维声学科技有限公司 | A kind of connection structure of the top dome of loudspeaker and sound film |
| CN110381428A (en) * | 2019-08-30 | 2019-10-25 | 湖南捷力泰科技有限公司 | Novel piezoelectric loudspeaker |
| CN210807635U (en) * | 2020-01-14 | 2020-06-19 | 东莞达电电子有限公司 | Vibrating diaphragm structure for earphone |
Non-Patent Citations (1)
| Title |
|---|
| 袁镇海 等: "阴极电弧沉积类金刚石膜在电声中的应用――高保真DLC/Ti高音扬声器振膜的研发和生产", 广东有色金属学报, vol. 15, no. 01, 20 June 2005 (2005-06-20), pages 26 - 29 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112839288A (en) * | 2021-01-09 | 2021-05-25 | 广州市声讯电子科技股份有限公司 | Special high-temperature-resistant transducer sound film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200204904A1 (en) | Compact coaxial loudspeaker | |
| WO2021088934A1 (en) | Centring support chip and sounding device | |
| CN210807635U (en) | Vibrating diaphragm structure for earphone | |
| CN111131973A (en) | Vibrating diaphragm structure for earphone | |
| US20040076309A1 (en) | Audio radiator with radiator flexure minimization and voice coil elastic anti-wobble members | |
| CN106210998B (en) | Vibrating diaphragm, vibrating assembly and loudspeaker monomer | |
| JP2007533229A (en) | Diaphragm for speaker drive unit or microphone | |
| US5905804A (en) | Pad structure for a speaker cabinet | |
| TWM467273U (en) | Thin type speaker structure | |
| US20070154059A1 (en) | Damper structure of preventing irregular vibration for speaker | |
| CN201289738Y (en) | Biaxial static pressure air suspension bearing of electric gramophone | |
| CN112333612A (en) | High dynamic balance loudspeaker | |
| KR20060058711A (en) | Shallow loudspeaker | |
| JP3323256B2 (en) | Speaker | |
| US20220236460A1 (en) | Diaphragm structure | |
| CN213094475U (en) | Low-distortion broadband composite earphone sound film | |
| JP3172394U (en) | Speaker | |
| CN204810549U (en) | Cone detection tool | |
| CN208128518U (en) | A kind of Full-frequency trumpet | |
| CN206835353U (en) | The novel combined diaphragm of loudspeaker | |
| CN217011162U (en) | Loudspeaker | |
| CN201752134U (en) | Elasticity wave combining a plane flake structure with a wave slice structure | |
| CN104320742A (en) | Loudspeaker centering supporting piece | |
| CN206835363U (en) | Double magnetic circuit two-tone film loudspeaker | |
| US20190349686A1 (en) | Ultrathin assembled speaker cone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |