WO2015180289A1 - 扬声器振膜 - Google Patents
扬声器振膜 Download PDFInfo
- Publication number
- WO2015180289A1 WO2015180289A1 PCT/CN2014/086109 CN2014086109W WO2015180289A1 WO 2015180289 A1 WO2015180289 A1 WO 2015180289A1 CN 2014086109 W CN2014086109 W CN 2014086109W WO 2015180289 A1 WO2015180289 A1 WO 2015180289A1
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- WO
- WIPO (PCT)
- Prior art keywords
- layer
- base
- base layer
- speaker
- surface layer
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Classifications
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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
- H04R7/12—Non-planar diaphragms or cones
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
- H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of 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
- 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
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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
- H04R7/12—Non-planar diaphragms or cones
- H04R7/127—Non-planar diaphragms or cones dome-shaped
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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
- H04R9/06—Loudspeakers
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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
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/025—Diaphragms comprising polymeric materials
Definitions
- the utility model relates to the technical field of loudspeakers, and more particularly to a loudspeaker diaphragm.
- the speaker plays an indispensable role in the sound system.
- the speaker In a sound system, the speaker is the weakest device, and it is the most important component for the sound system of the sound system.
- the audio power passes through electromagnetic, piezoelectric or electrostatic effects, causing the cone or diaphragm to vibrate and resonate (resonate) with the surrounding air to make a sound. Therefore, it is with the appearance of the speakers that people can hear the beautiful sound.
- the diaphragm of the traditional microspeaker is made of a core layer between two layers of the same or different characteristics.
- the material of the two-layer film is mostly selected from polyetheretherketone, and the middle core layer is generally made of acrylic rubber to achieve various choices of acoustic performance of the speaker.
- the currently available composite film method and the toughness of the polyetheretherketone are difficult to meet the requirements.
- the object of the present invention is to provide a speaker diaphragm which can increase the acoustic properties of the microspeaker while increasing the toughness of the diaphragm and improve the diaphragm rupture of the speaker product after the power test. Problems, improve product reliability.
- the speaker diaphragm provided by the utility model comprises a first surface layer, an intermediate layer and a second surface layer in a laminated structure, and at least one of the first surface layer and the second surface layer is a composite of a base layer and a reinforcing layer a structure, the other surface layer comprising at least one base layer; and the base layer is a polyetheretherketone layer, a polyarylate layer, a polyethylene terephthalate layer, a polyetherimide layer or any two of them Composite structure; the reinforcing layer is a thermoplastic polyurethane elastomer layer or a thermoplastic elastomer layer.
- a preferred structure is that one of the first surface layer and the second surface layer is combined with the voice coil of the speaker.
- a preferred structure is that the surface layer combined with the voice coil of the speaker is combined with the voice coil through its base layer.
- a preferred structure is that when the other surface layer includes only one base layer, the stacking order of the speaker diaphragms is:
- Base layer reinforcement layer, intermediate layer, base layer; or,
- Strengthening layer base layer, intermediate layer, base layer; or,
- Base layer intermediate layer, base layer, reinforcement layer; or,
- first surface layer and the second surface layer are both a composite structural intermediate layer of the base layer and the reinforcing layer.
- a preferred configuration is that the stacking order of the speaker diaphragms is:
- Base layer reinforcement layer, intermediate layer, base layer, reinforcement layer; or
- Base layer reinforcement layer, intermediate layer, reinforcement layer, base layer; or
- Reinforcement layer base layer, intermediate layer, reinforcement layer, base layer.
- the intermediate layer is an acrylic layer.
- a preferred structure is that when the surface layer is a combination of the base layer and the reinforcing layer, the base layer is respectively thermally bonded to the corresponding reinforcing layer.
- first surface layer and the second surface layer have a thickness of 2 to 30 ⁇ m, respectively.
- the reinforcing layer has a thickness of 5 to 40 ⁇ m and a hardness of 60 to 95 A.
- FIG. 1 is a schematic structural view of a speaker diaphragm according to Embodiment 1 of the present invention.
- FIG. 2 is a schematic structural view of a speaker diaphragm according to Embodiment 2 of the present invention.
- FIG. 3 is a schematic structural view of a speaker diaphragm according to Embodiment 3 of the present invention.
- FIG. 4 is a schematic structural view of a speaker diaphragm according to Embodiment 4 of the present invention.
- FIG. 5 is a schematic structural view of a speaker diaphragm according to an embodiment of the present invention.
- FIG. 6 is a schematic structural view of a speaker diaphragm according to an embodiment of the present invention.
- Reference numerals therein include a base layer 1, a polyetheretherketone layer 11, a polyarylate layer 12, an intermediate layer 2, a reinforcing layer 3, a thermoplastic polyurethane elastomer layer 31, and a voice coil 4.
- 1 to 4 respectively show the structure of a speaker diaphragm of an embodiment of the present invention from different structural forms.
- a speaker diaphragm includes a surface layer and an intermediate layer 2, wherein the surface layer includes a first surface layer and a second surface layer, and the first surface layer and the intermediate layer 2
- the second surface layer is combined with the second surface layer, wherein the first surface layer and the second surface layer are respectively located on two sides of the intermediate layer 2, and the surface layer combined with the voice coil 4 of the speaker may be the first surface layer or It is the second surface layer.
- the first surface layer and the second surface layer is a composite structure of the base layer 1 and the reinforcement layer 3, and the other surface layer includes at least one base layer 1, that is, another The surface layer may be a base layer 1 or a composite structure of the base layer 1 and the reinforcement layer 3.
- the base layer 1 is a PEEK (polyether ether ketone) layer 11, a PAR (polyarylate) layer 12, a PET (polyethylene terephthalate) layer, a PEI (polyetherimide) layer or Any two composite structures.
- the reinforcing layer 3 is a TPU (thermoplastic polyurethane elastomer) layer 31 or a TPE (thermoplastic bomb)
- the layer 2 is an acrylic layer.
- each layer of the speaker diaphragm has the following four cases: base layer 1, reinforcing layer 3, intermediate layer 2, and base layer 1 Or, reinforcement layer 3, base layer 1, intermediate layer 2, base layer 1; or, base layer 1, intermediate layer 2, base layer 1, reinforcement layer 3; or, base layer 1, intermediate layer 2, reinforcement layer 3 , the base layer 1.
- the stacking manner of the layers of the speaker diaphragm has the following four cases: the base layer 1, the reinforcing layer 3, and the intermediate layer 2.
- one of the first surface layer or the second surface layer is combined with the voice coil 4 of the speaker during installation and use. That is to say, in combination with the voice coil 4, it may be the base layer 1 in the surface layer or the reinforcing layer 3 in the surface layer.
- a preferred structure among them is that the side of the base layer 1 in the surface layer is combined with the voice coil 4 of the speaker.
- the reinforcing layer 3 is combined with the intermediate layer 2 or the base layer 1 is combined with the intermediate layer 2, wherein a preferred structure is a surface layer
- the reinforcing layer 3 in the middle is combined with the intermediate layer 2.
- the material of the base layer 1 is a composite structure of one or two of polyetheretherketone, polyetherimide, polyethylene terephthalate and polyarylate;
- the material of the reinforcing layer 3 is thermoplastic a polyurethane elastomer or a thermoplastic elastomer;
- the intermediate layer 2 is located between the first surface layer and the second surface layer of the diaphragm, and the material of the intermediate layer 2 is acrylic glue.
- the first surface layer or the second surface layer is a combination of the base layer 1 and the reinforcing layer 3
- the base layer 1 is respectively combined with the corresponding reinforcing layer 3 by thermal composite.
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- the speaker diaphragm in this embodiment includes a first surface layer, a second surface layer, and an intermediate layer 2, wherein the first surface layer and the second surface layer are positioned above and below the intermediate layer 2,
- a layer close to the speaker voice coil 4 can make the first surface layer also make the second surface layer.
- a surface layer remote from the speaker voice coil 4 is only the base layer 1
- the other surface layer of the near voice coil 4 is a composite structure of the base layer 1 and the reinforcing layer 3.
- the reinforcing layer 3 in one surface layer close to the voice coil 4 is combined with the speaker voice coil 4, the base layer 1 is combined with the intermediate layer 2, and the base layer 1 and the reinforcing layer 3 are combined by thermal lamination or other means.
- the base layer 1 is a PEEK (polyether ether ketone) layer 11, a PAR (polyarylate) layer 12, a PET (polyethylene terephthalate) layer, a PEI (polyetherimide) layer or Any two composite structures.
- the reinforcing layer is a TPU (thermoplastic polyurethane elastomer) layer 31 or a TPE (thermoplastic elastomer) layer;
- the intermediate layer 2 is an acrylic rubber layer.
- the diaphragm of the structure increases the toughness of the base layer of the speaker diaphragm by adding a reinforcing layer thermoplastic polyurethane elastomer (TPU) or a thermoplastic elastomer (TPE).
- TPU thermoplastic polyurethane elastomer
- TPE thermoplastic elastomer
- the base layer material has good elasticity and mechanical strength, and is combined with the reinforcing layer. Improves the acoustic performance of the speaker diaphragm.
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- the speaker diaphragm in this embodiment is similar to the diaphragm structure of the embodiment.
- a surface layer away from the speaker voice coil 4 is only the base layer 1, and is close to
- the other surface layer of the voice coil 4 is a composite structure of the base layer 1 and the reinforcing layer 3.
- the base layer 1 in one surface layer close to the voice coil 4 is combined with the speaker voice coil 4, and the reinforcing layer 3 is combined with the intermediate layer 2.
- the base layer 1 is a PEEK (polyether ether ketone) layer, a PAR (polyarylate) layer, a PET (polyethylene terephthalate) layer, a PEI (polyetherimide) layer, or any two of them.
- the reinforcing layer 3 is a TPU (thermoplastic polyurethane elastomer) layer or a TPE (thermoplastic elastomer) layer; the intermediate layer is an acrylic rubber layer.
- the intermediate layer base layer 1 in a surface layer close to the voice coil 4 is thermally compounded with the reinforcing layer 3.
- the diaphragm of this structure bonds the side of the base layer 1 in one surface layer with the voice coil to improve the adhesion of the diaphragm and the voice coil, and to ensure the adhesion between the two.
- one side of the thermoplastic polyurethane elastomer (TPU) or the thermoplastic elastomer (TPE) is in contact with the acrylic rubber of the intermediate layer to strengthen the toughness of the base layer, thereby preventing the phenomenon that the base product is broken after the power test is performed, and the phenomenon is improved. Product reliability.
- Embodiment 3 is a diagrammatic representation of Embodiment 3
- both surface layers of the speaker diaphragm in this embodiment are a composite structure of the base layer 1 and the reinforcing layer 3, wherein the base layer 1 and the intermediate layer 2 of one surface layer of the diaphragm The acrylic adhesive is bonded, and the base layer 1 of the other surface layer is in contact with the voice coil 4.
- the base layer 1 is polyetheretherketone (PEEK), polyetherimide (PEI), polyethylene terephthalate (PET), polyfang A film in the ester (PAR) or a composite structure of any two
- the reinforcing layer 2 is made of a thermoplastic polyurethane elastomer (TPU) or a thermoplastic elastomer (TPE).
- the diaphragm of this structure is provided with a reinforcing layer 3 in both the first surface layer and the second surface layer to form a 5-layer film structure, which can effectively improve the acoustic performance of the speaker product.
- the side of the base layer in the surface layer of the diaphragm is bonded to the voice coil, and at the same time, one of the reinforcing layers 3 in the surface layer is made.
- the acrylic adhesive on the side and the intermediate layer 2 increases the toughness of the base layer 1, and while ensuring the acoustic performance of the speaker, the damage in the speaker experiment is reduced, and the reliability of the product is improved.
- Embodiment 4 is a diagrammatic representation of Embodiment 4:
- the speaker diaphragm in this embodiment includes a total of five layers, wherein the first surface layer and the second surface layer are both thermally composited by the base layer 1 and the reinforcing layer 3, wherein the two surface layers are formed.
- the reinforcing layers 3 are all bonded to the acrylic glue of the intermediate layer 2, wherein the base layer 1 of one surface layer is in contact with the voice coil 4.
- the base layer 1 is a film of polyetheretherketone (PEEK), polyetherimide (PEI), polyethylene terephthalate (PET), polyarylate (PAR) or any two
- PEEK polyetheretherketone
- PEI polyetherimide
- PET polyethylene terephthalate
- PAR polyarylate
- the composite structure of the reinforcing layer 3 is a thermoplastic polyurethane elastomer (TPU) or a thermoplastic elastomer (TPE).
- the speaker diaphragm of this structure bonds the base layer and the voice coil to ensure the adhesion between the voice coil and the diaphragm, and at the same time, the reinforcing layer is bonded to the acrylic layer of the intermediate layer to strengthen the toughness of the base layer. Strength, improve the performance of the diaphragm.
- FIG. 5 and 6 respectively show a specific structure of a speaker diaphragm according to an embodiment of the present invention.
- the speaker diaphragm in this embodiment includes a total of four layers, wherein one surface layer away from the speaker voice coil is a film structure, which is made of PEEK 11 and another surface.
- the layer is a composite structure of the polyarylate layer 12 and the thermoplastic polyurethane elastomer layer 31, that is, in the surface layer of the structure, the base layer is a PAR (polyarylate) layer 12, and the reinforcing layer is a TPU (thermoplastic polyurethane elastomer) layer. 31.
- the speaker diaphragm in this embodiment includes a total of five layers, wherein the first surface layer and the second surface layer are both a composite structure of the base layer 1 and the reinforcement layer 3, and one of the sound coils away from the speaker
- the base layer is a PEEK (polyether ether ketone) layer 11
- the base layer in the other surface layer is a PAR (polyarylate) layer 12.
- the reinforcing layer material is a thermoplastic polyurethane elastomer (TPU) 31, and the intermediate layer 2 is made of an acrylic rubber.
- the TPU is in a molten state at a high temperature, which is equivalent to A colloid, combined with other layers of materials, can increase the damping characteristics of the diaphragm.
- the material of the reinforcing layer 3 is generally selected from a thermoplastic polyurethane elastomer (TPU) or a thermoplastic elastomer (TPE), and other materials can be used as well.
- the intermediate layer can also be used with colloids of other materials.
- the base layer is made of polyetheretherketone (PEEK), polyetherimide (PEI), polyethylene terephthalate (PET), polyarylate (PAR), or any two of them. Composite structure, but does not exclude other materials that meet the product requirements.
- the thickness of the base layer is preferably 2 to 30 ⁇ m.
- the front and back signs should be marked to prevent the order from being reversed during the installation process, which affects the adhesion between the diaphragm and the voice coil, thereby reducing the acoustic performance of the speaker product.
- the speaker diaphragm provided by the present invention combines the base layer and the reinforcing layer as a base material of the composite diaphragm to increase the toughness and strength of the diaphragm, and prevent the diaphragm of the speaker product after the power test. Cracking of the substrate improves product reliability and acoustic performance.
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- Physics & Mathematics (AREA)
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Abstract
Description
Claims (10)
- 一种扬声器振膜,包括呈层叠结构的第一表面层、中间层和第二表面层,其特征在于,所述第一表面层和所述第二表面层中的至少一个表面层为基础层和加强层的复合结构,另一个表面层至少包括一层基础层;并且,所述基础层为聚醚醚酮层、聚芳酯层、聚对苯二甲酸乙二醇酯层、聚醚酰亚胺层或者其中任意两种的复合结构;所述加强层为热塑性聚氨酯弹性体层或者热塑性弹性体层。
- 如权利要求1所述的扬声器振膜,其特征在于,第一表面层和第二表面层中的一个表面层与扬声器的音圈相结合。
- 如权利要求2所述的扬声器振膜,其特征在于,与扬声器的音圈结合的表面层通过其基础层与所述音圈相结合。
- 如权利要求1所述的扬声器振膜,其特征在于,在另一个表面层只包括一层基础层时,所述扬声器振膜的层叠顺序为:基础层、加强层、中间层、基础层;或者,加强层、基础层、中间层、基础层;或者,基础层、中间层、基础层、加强层;或者,基础层、中间层、加强层、基础层。
- 如权利要求1所述的扬声器振膜,其特征在于,所述第一表面层和第二表面层均为基础层和加强层的复合结构。
- 如权利要求5所述的扬声器振膜,其特征在于,所述扬声器振膜的层叠顺序为:基础层、加强层、中间层、基础层、加强层;或者,基础层、加强层、中间层、加强层、基础层;或者,加强层、基础层、中间层、基础层、加强层;或者,加强层、基础层、中间层、加强层、基础层。
- 如权利要求1所述的扬声器振膜,其特征在于,所述中间层为丙烯酸胶层。
- 如权利要求1所述的扬声器振膜,其特征在于,在所述表面层为基础层与加强层的结合时,所述基础层分别与相对应的加强层通过热复合结合。
- 如权利要求1所述的扬声器振膜,其特征在于,所述第一表面层和第二表面层的厚度分别为2~30μm。
- 如权利要求1所述的扬声器振膜,其特征在于,所述加强层的厚度为5~40μm,硬度为邵氏硬度60~95A。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020167028699A KR101858380B1 (ko) | 2014-05-26 | 2014-09-09 | 스피커 진동막 |
US15/313,937 US9955266B2 (en) | 2014-05-26 | 2014-09-09 | Loudspeaker diaphragm |
Applications Claiming Priority (2)
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CN201420273023.5 | 2014-05-26 | ||
CN201420273023.5U CN203883985U (zh) | 2014-05-26 | 2014-05-26 | 扬声器振膜 |
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WO2015180289A1 true WO2015180289A1 (zh) | 2015-12-03 |
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PCT/CN2014/086109 WO2015180289A1 (zh) | 2014-05-26 | 2014-09-09 | 扬声器振膜 |
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US (1) | US9955266B2 (zh) |
KR (1) | KR101858380B1 (zh) |
CN (1) | CN203883985U (zh) |
WO (1) | WO2015180289A1 (zh) |
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EP3240304A1 (en) | 2016-04-26 | 2017-11-01 | Isovolta AG | Acoustic membrane |
WO2022000776A1 (zh) * | 2020-06-30 | 2022-01-06 | 瑞声声学科技(深圳)有限公司 | 振膜及发声器件 |
WO2022068012A1 (zh) * | 2020-09-29 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | 振膜及发声器件 |
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CN104683923A (zh) * | 2015-03-17 | 2015-06-03 | 歌尔声学股份有限公司 | 微型扬声器振膜 |
CN105188000B (zh) * | 2015-09-18 | 2019-07-19 | 歌尔股份有限公司 | 一种扬声器 |
CN105933831B (zh) * | 2016-04-22 | 2020-05-12 | 歌尔股份有限公司 | 振膜及设有该振膜的微型发声器 |
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CN106231506A (zh) * | 2016-09-29 | 2016-12-14 | 歌尔股份有限公司 | 振膜及设有该振膜的微型发声器 |
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CN108551641B (zh) * | 2018-06-15 | 2019-08-20 | 歌尔股份有限公司 | 扬声器 |
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CN216391389U (zh) * | 2021-09-28 | 2022-04-26 | 东莞泉声电子有限公司 | 频响曲线平滑的平面式振膜喇叭 |
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- 2014-09-09 US US15/313,937 patent/US9955266B2/en active Active
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EP3240304A1 (en) | 2016-04-26 | 2017-11-01 | Isovolta AG | Acoustic membrane |
WO2017186726A1 (en) | 2016-04-26 | 2017-11-02 | Isovolta Ag | Acoustic membrane |
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WO2022000776A1 (zh) * | 2020-06-30 | 2022-01-06 | 瑞声声学科技(深圳)有限公司 | 振膜及发声器件 |
WO2022068012A1 (zh) * | 2020-09-29 | 2022-04-07 | 瑞声声学科技(深圳)有限公司 | 振膜及发声器件 |
Also Published As
Publication number | Publication date |
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KR20160134774A (ko) | 2016-11-23 |
US20170188155A1 (en) | 2017-06-29 |
CN203883985U (zh) | 2014-10-15 |
KR101858380B1 (ko) | 2018-05-15 |
US9955266B2 (en) | 2018-04-24 |
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