WO2015096527A1 - Micro-haut-parleur avec structure à diaphragme plat - Google Patents

Micro-haut-parleur avec structure à diaphragme plat Download PDF

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Publication number
WO2015096527A1
WO2015096527A1 PCT/CN2014/087399 CN2014087399W WO2015096527A1 WO 2015096527 A1 WO2015096527 A1 WO 2015096527A1 CN 2014087399 W CN2014087399 W CN 2014087399W WO 2015096527 A1 WO2015096527 A1 WO 2015096527A1
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WO
WIPO (PCT)
Prior art keywords
coil
magnetic
speaker
magnetic circuit
fpc board
Prior art date
Application number
PCT/CN2014/087399
Other languages
English (en)
Chinese (zh)
Inventor
汪珍珍
王凯
徐金国
Original Assignee
汉得利（常州）电子股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 汉得利（常州）电子股份有限公司 filed Critical 汉得利（常州）电子股份有限公司
Publication of WO2015096527A1 publication Critical patent/WO2015096527A1/fr

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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
    • 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
    • H04R9/025—Magnetic circuit

Definitions

  • the present invention relates to a speaker, and more particularly to a flat membrane structure microspeaker.
  • the thickness of mobile phone speakers at home and abroad is generally H3.5mm and H3.0mm, and the thinnest speaker can achieve H2.5mm thickness, but the performance of H2.5mm thickness speaker is far from the performance of H3.5mm speaker.
  • the present invention has devised a flat membrane structure microspeaker to solve the above problem, and to make the future of the speaker thinner without affecting the high performance of the speaker.
  • the speaker in the actual technology is shown in FIG. 6, which comprises a moving coil type coil 15, a positioning bracket 1, a magnetic circuit device and a diaphragm 3.
  • the magnetic circuit device is composed of a magnetic ring 7 and a magnet 8, and the diaphragm 3 is attached.
  • the moving coil 15 surrounds the outer surface of the magnet 8 , and the moving coil 15 generates a magnetic field after being energized and forms a magnetic circuit with the magnetic circuit device, and the moving coil 15 is magnetically Under the action, the diaphragm 3 will vibrate up and down to make a sound.
  • the moving coil is coiled by a copper wire. If the performance of the speaker is to be improved, it is necessary to increase the length of the moving coil 15.
  • the thickness is also inevitably increased.
  • it has a thicker thickness H2
  • space needs to be reserved between the magnetic circuit device and the moving coil 15 to prevent the moving coil line.
  • the ring 15 vibrates up and down, it collides with the magnetic circuit device to cause a disconnection.
  • the space reserved for the speaker in mobile phones and tablets will become smaller and smaller, but the moving coil 15 itself has a thicker thickness H2, and the magnetic circuit device during installation Space is also required to be reserved with the moving coil 15 so that existing speakers cannot meet the development needs of mobile phones and tablets.
  • Chinese Patent No. CN102651840A discloses a speaker, the structure of which comprises a main body of a speaker, the diaphragm is a flat plate type, the edge of the diaphragm is connected to the main body of the speaker, an intermediate block is arranged at an edge region of the diaphragm, and the intermediate block is located at the vibration. Between the membrane and the body, the intermediate block is an elastic material.
  • the speaker of the invention cannot guarantee the high performance of the speaker under the condition of reducing the thickness, and it cannot adapt to the market trend of thinner and thinner mobile phones and tablets.
  • the technical problem to be solved by the present invention is to make the thickness of the speaker to be H2.0 mm, and to make the performance of the speaker the same as that of the speaker of H3.5 mm thickness; and to provide a flat-film structure micro-speaker.
  • the structure of the present invention comprises a positioning bracket, a magnetic circuit device, a coil and a diaphragm.
  • the diaphragm is attached to the surface of the coil, and the coil is fixed by the positioning bracket; the coil is formed by plating on the FPC board.
  • the magnetic circuit device is divided into upper and lower layers, and the FPC board is placed between the upper and lower magnetic circuit devices.
  • the magnetic poles of the upper and lower magnetic circuit devices are the same, and the coil is placed in the magnetic gap of the upper and lower magnetic circuit devices.
  • the shape of the coil matches the shape of the magnetic gap.
  • the positioning bracket is provided with a hanging arm around the positioning bracket, and the positioning bracket is respectively connected with the upper and lower magnetic circuit devices through the hanging arm, and the positioning bracket further has a signal input end, a signal output end, a first connecting end and a first Two connectors.
  • the magnetic circuit device is composed of a fixed frame, a magnetic ring and a magnet, and a plurality of magnetic rings are horizontally spliced and placed in the fixed frame, and a magnet, a magnet and a magnetic ring are arranged in the middle of each magnetic ring. Interform The magnetic gap is formed, and the shape of the magnetic gap is matched with the shape of the coil. The magnetic poles of the adjacent two magnets are opposite, and the fixing bracket is connected to the positioning bracket through the hanging arm.
  • the upper and lower surfaces of the FPC board are plated with coils, and the coils on the lower surface of the FPC board are connected through the first connection end, the coils on the surface of the FPC board are connected to the signal input end, and the coils on the lower surface of the FPC board are connected. Connected to the signal output through the second connection.
  • the coating is a cyclic coating.
  • the invention can not only make the thickness of the speaker H2.0mm, but also meets the trend that the mobile phone and the tablet computer market become thinner and smaller, and the size is smaller and smaller; and the performance of the speaker with H2.0mm thickness can be made.
  • the performance is the same as the thickness of H3.5mm, and the high performance of the speaker is guaranteed under the condition of reducing the thickness of the speaker.
  • the invention has the advantages of simple structure, easy manufacture, low cost, practicality and high efficiency.
  • Figure 1 is a schematic view of the structure of the present invention.
  • FIG. 2 is a schematic structural view of a coil and a positioning bracket.
  • Figure 3 is a schematic view showing the structure of a magnetic ring and a magnet.
  • FIG. 4 is a schematic view showing the position of a coil and a magnetic circuit device.
  • Figure 5 is a diagram showing the force of the coil in the present invention.
  • Fig. 6 is a diagram showing the force of a moving coil type coil in the prior art.
  • 1 is the positioning bracket
  • 2 is the coil
  • 3 is the diaphragm
  • 4 is the FPC board
  • 6 is the fixed frame
  • 7 is the magnetic ring
  • 8 is the magnet
  • 10 is the hanging arm
  • 11 is the signal input end
  • 12 is the signal Output end
  • 13 is the first connection end
  • 14 is the second connection end
  • 15 is a moving coil type
  • a flat membrane structure microspeaker comprises a positioning bracket 1, a magnetic circuit device, a coil 2 and a diaphragm 3, and the diaphragm 3 is attached to the upper surface of the coil 2, and the coil 2 is fixed by the positioning bracket 1; the coil 2 is formed by plating on the FPC board 4, the magnetic circuit device is divided into upper and lower layers, and the FPC board 4 is placed between the upper and lower magnetic circuit devices, and the upper and lower layers are magnetic The magnetic poles of the relative position of the road device are the same, the coil 2 is placed between the magnetic gaps of the upper and lower magnetic circuit devices, and the shape of the coil 2 matches the shape of the magnetic gap.
  • the coil 2 of the present invention is formed by plating a coil 2 on the FPC board 4 to reduce the thickness of the coil 2 to H1, which is greatly reduced compared to the thickness of the coil 2 of the prior art, thereby providing a reduction in the thickness of the speaker. space.
  • the present invention generates a magnetic field by energizing the coil 2 on the FPC board 4 to cause the coil 2 to generate a magnetic field under the condition of energization, so that the coil 2 and the magnetic circuit device connected to the upper and lower ends of the coil 2 form a magnetic circuit, so that the FPC board 4 and the coil 2 are formed.
  • the magnetic force is applied in the vertical direction, and the FPC board 4 and the coil 2 vibrate up and down together with the diaphragm 3 by the magnetic force, thereby causing the diaphragm 3 to sound.
  • the present invention forms a coil 2 on the FPC board 4 and a magnetic circuit device disposed at the upper and lower ends of the coil 2 to reduce the thickness of the speaker under the condition of ensuring high performance, so that the speaker of H2.0 thickness has H3. .5 thickness of high performance, in response to the market trend of thinner mobile phones and tablets.
  • the speaker in the actual technology is shown in FIG. 6, which comprises a moving coil type coil 15, a positioning bracket 1, a magnetic circuit device and a diaphragm 3.
  • the magnetic circuit device is composed of a magnetic ring 7 and a magnet 8, and the diaphragm 3 is attached.
  • the moving coil is coiled by a copper wire. If the performance of the speaker is to be improved, it is necessary to increase the length of the moving coil 15. When the length of the moving coil 15 is increased, the thickness is also inevitably increased.
  • the present invention replaces the conventional moving coil type coil 15 by circulating a plating layer on the FPC board 4, and the thickness of the coil 2 formed on the FPC board 4 is only H1, and H1 is much smaller than H2, and the present invention is reduced by
  • the thickness of the coil 2 itself provides space for reducing the thickness of the speaker, and the coil 2 on the FPC board 4 does not break like a moving coil during vibration, so the magnetic circuit control and the coil 2 are not used. Reserved space.
  • the present invention replaces the moving coil 15 by circulating a plating layer on the FPC board 4, thereby reducing the thickness of the speaker to cope with the market trend of thinner handsets and tablets.
  • the positioning bracket 1 is provided with a hanging arm 10, and the positioning bracket 1 is connected to the magnetic circuit device at the upper and lower ends by the hanging arm 10.
  • the positioning bracket 1 is further provided with a signal input end 11 and a signal output end 12
  • the upper and lower surfaces of the FPC board 4 are plated with coils 2, and the coils 2 on the upper and lower surfaces of the FPC board 4 are connected through the first connection end 13, and the coil 2 on the upper surface of the FPC board 4 is connected to the signal input end 11, FPC
  • the coil 2 on the lower surface of the plate 4 is connected to the signal output terminal 12 via a second connection end 14; the coating is a cyclic coating.
  • the present invention increases the length of the coil 2 by forming a coil 2 on the surface of the FPC board 4 by circulating plating; and separately forming two coils 2 on the upper and lower surfaces of the FPC board 4, by being disposed on the FPC board 4 a connecting end 13 upper and lower surfaces
  • the upper coil 2 is connected to each other, and the length of the coil 2 is increased again, thereby improving the performance of the high speaker, and the speaker having the H2.0 thickness has the performance of the H3.5 thick speaker.
  • the magnetic circuit device shown in FIG. 1, FIG. 3 and FIG. 5 is divided into two upper and lower layers, and the FPC board 4 is placed between the upper and lower magnetic circuit devices, and the magnetic poles of the upper and lower magnetic circuit devices are the same, and the coil 2 is placed. Between the magnetic gaps of the upper and lower magnetic circuit devices.
  • Each layer of magnetic circuit device is composed of a fixing frame 6, a magnetic ring 7 and a magnet 8.
  • the four magnetic rings 7 are spliced and placed in the fixing frame 6, and a magnet 8 is arranged in the middle of each magnetic ring 7, and the magnet 8 is A magnetic gap is formed between the magnetic rings 7, the shape of the magnetic gap is matched with the shape of the coil 2, the magnetic poles of the adjacent two magnets 8 are opposite, and the fixing frame 6 is connected to the positioning bracket 1 by the hanging arm 10.
  • the present invention places the FPC board 4 between two oppositely disposed magnetic circuit devices such that the coil 2 is located between two opposing magnetic gaps, increasing the area of the coil 2 to cut the magnetic field, thereby increasing the FPC board 4 and the coil.
  • the magnetic force received by 2 increases the sound performance of the speaker.
  • the magnetic circuit device of the present invention is composed of four magnetic rings 7 and four magnets 8. This design improves the performance of the speaker by increasing the area of the coil 2 to cut the magnetic field and lengthening the length of the coil 2. Also, the number of the magnetic ring 7 and the magnet 8 in the present invention is determined by the design size of the speaker, and the more the number of the magnetic ring 7 and the magnet 8, the better the performance of the speaker.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

La présente invention concerne un micro-haut-parleur avec structure à diaphragme plat, la structure comportant un appui de positionnement, un dispositif de circuit magnétique, une bobine et un diaphragme; le diaphragme s'ajuste à la surface de la bobine; la bobine est fixée via l'appui de positionnement et est formée par revêtement de la carte FPC; le dispositif de circuit magnétique comporte une couche supérieure et une couche inférieure, les deux couches prenant en sandwich une carte FPC et présentant les mêmes pôles magnétiques sur leurs positions opposées; la bobine est disposée dans l'entrefer entre la couche supérieure et la couche inférieure du dispositif magnétique, et la forme de la bobine correspond à celle de l'entrefer. La présente invention est capable non seulement de réduire au minimum l'épaisseur du haut-parleur à H2,0 mm, suivant la tendance des téléphones mobiles et des tablettes plus minces et plus petits, mais permet également à un haut-parleur de H2,0 mm de présenter les mêmes performances qu'un haut-parleur de H3,5 mm, garantissant ainsi des performances élevées du haut-parleur de tout en réduisant son épaisseur. De plus, la présente invention est de structure simple, facile à fabriquer et économique, et se caractérise par son côté pratique et son rendement élevé.
PCT/CN2014/087399 2013-12-25 2014-09-25 Micro-haut-parleur avec structure à diaphragme plat WO2015096527A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310724392.1A CN103648073A (zh) 2013-12-25 2013-12-25 一种平膜结构微型扬声器
CN201310724392.1 2013-12-25

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Publication Number Publication Date
WO2015096527A1 true WO2015096527A1 (fr) 2015-07-02

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WO (1) WO2015096527A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103648073A (zh) * 2013-12-25 2014-03-19 汉得利（常州）电子有限公司 一种平膜结构微型扬声器
CN105282663B (zh) * 2015-11-23 2018-06-08 许扬 一种平面动圈复合式振膜组件
CN106817664B (zh) * 2015-12-01 2020-09-22 鹏鼎控股(深圳)股份有限公司 扬声器及其制作方法
CN109362004A (zh) * 2018-09-20 2019-02-19 常州阿木奇声学科技有限公司 一种喇叭结构
RU2746441C1 (ru) * 2020-06-02 2021-04-14 Сотис АГ Громковоритель

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050254674A1 (en) * 2004-05-11 2005-11-17 Industrial Technology Research Institute Flexible electronic device with flexible speaker
CN200947671Y (zh) * 2006-01-20 2007-09-12 丁轶 带式扬声器
CN103648073A (zh) * 2013-12-25 2014-03-19 汉得利（常州）电子有限公司 一种平膜结构微型扬声器

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102761810B (zh) * 2011-04-26 2015-04-08 歌尔声学股份有限公司 一种扬声器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050254674A1 (en) * 2004-05-11 2005-11-17 Industrial Technology Research Institute Flexible electronic device with flexible speaker
CN200947671Y (zh) * 2006-01-20 2007-09-12 丁轶 带式扬声器
CN103648073A (zh) * 2013-12-25 2014-03-19 汉得利（常州）电子有限公司 一种平膜结构微型扬声器

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