WO2018050032A1 - Haut-parleur à diaphragme vibrant plan - Google Patents

Haut-parleur à diaphragme vibrant plan Download PDF

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Publication number
WO2018050032A1
WO2018050032A1 PCT/CN2017/101114 CN2017101114W WO2018050032A1 WO 2018050032 A1 WO2018050032 A1 WO 2018050032A1 CN 2017101114 W CN2017101114 W CN 2017101114W WO 2018050032 A1 WO2018050032 A1 WO 2018050032A1
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WO
WIPO (PCT)
Prior art keywords
magnet
diaphragm
reinforcing
magnetic field
planar
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Application number
PCT/CN2017/101114
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English (en)
Chinese (zh)
Inventor
邱士嘉
游博丞
孙伟
Original Assignee
万魔声学科技有限公司
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Filing date
Publication date
Application filed by 万魔声学科技有限公司 filed Critical 万魔声学科技有限公司
Publication of WO2018050032A1 publication Critical patent/WO2018050032A1/fr

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details

Definitions

  • the invention relates to the technical field of loudspeakers, in particular to a planar diaphragm loudspeaker.
  • the horn emits sound by oscillating the voice coil in a magnetic field formed by a magnetic steel, a washer, and a magnetically permeable cover, and the magnetic field drives the voice coil with the audio current to vibrate, and the horn of the structure causes the thickness of the speaker.
  • the coil is placed on the diaphragm by silk screen to form a planar diaphragm, which can significantly reduce the volume of the speaker. And weight, however, this type of horn has a low volume defect.
  • the present application discloses a planar diaphragm horn to address one or more of the problems involved in the background.
  • a planar diaphragm horn comprising:
  • a coil layer disposed on the diaphragm and connected between the positive electrode and the negative electrode of the signal source, including straight segments parallel to each other, and a connecting segment connected between the straight segments;
  • a magnetic system fixed in the housing, comprising first and second magnets arranged at a staggered interval, and a first reinforcing magnet located between the adjacent first magnet and the second magnet; a magnet and the second magnet are located on the same side of the diaphragm, and a magnetic pole is opposite to an end of the diaphragm, and a direction of a magnetic field formed by the first reinforcing magnet near a side of the diaphragm is adjacent to The direction of the magnetic field formed by the first magnet and the second magnet adjacent to the side of the diaphragm is the same;
  • FIG. 1 is a schematic structural view showing a first diaphragm and a second magnet of a planar diaphragm horn provided on the same side of a diaphragm as a first reinforcing magnet;
  • FIG. 2 is a schematic structural view of a planar diaphragm horn provided with a second reinforcing magnet according to an embodiment
  • FIG. 3 is a schematic structural view showing the first magnet and the second magnet and the first reinforcing magnet respectively located on different sides of the diaphragm in the planar diaphragm horn provided by an embodiment
  • FIG. 4 is a schematic diagram showing a magnetic field distribution of a magnetic system in a planar diaphragm horn according to an embodiment
  • FIG. 5 is a schematic top plan view of a planar diaphragm horn provided by an embodiment.
  • a planar diaphragm 200 horn includes a housing 100, a diaphragm 200, a coil layer 300, and a magnetic system 400.
  • the diaphragm 200 is fixed to the casing 100, and the coil layer 300 is disposed on the diaphragm 200. Both ends of the coil layer 300 are respectively connected to the positive electrode 510 and the negative electrode 520 of the signal source.
  • the coil layer 300 includes a plurality of coil conductors arranged side by side in the horizontal direction.
  • the coil conductor includes a plurality of straight sections 310 and a connecting section 320.
  • the plurality of straight sections 310 are spaced apart from each other and are parallel to each other.
  • the connecting section 320 is connected to the straight section 310.
  • the connecting section 320 has an arc shape, and the arc-shaped connecting section 320 connects the straight sections 310 in series to form an entire coil conductor.
  • the entire coil conductor is a spiral S or serpentine shape.
  • the connecting section 320 is linear, and the entire conductor has a square wave shape.
  • the magnetic system 400 is fixed in the housing 100, and includes a first magnet 410, a second magnet 420, and a first reinforcing magnet 430.
  • the first reinforcing magnet 430 is located adjacent to the first magnet 410 and the second magnet 420.
  • the distance between the first reinforcing magnet 430 and the first magnet 410 and the second magnet 420 is kept equal, and the first magnet 410 and the second magnet 420 are located on the same side of the diaphragm 200, and both are close to the diaphragm.
  • the magnetic poles at one end of the 200 are opposite, and the direction of the magnetic field formed by the first reinforcing magnet 430 near the diaphragm 200 is the same as the direction of the magnetic field formed by the first magnet 410 and the second magnet 420 near the diaphragm 200 side.
  • the straight line segment 310 of the coil conductor is correspondingly disposed in a superimposed magnetic field of a magnetic field formed by the first magnet 410 and the second magnet 420 and the same direction magnetic field formed by the first reinforcing magnet 430 to obtain a larger magnetic field strength;
  • the straight line segment 310 of the coil conductor is disposed opposite to the first reinforcing magnet 430, that is, the straight line segment 310 of the coil conductor is disposed opposite to the first reinforcing magnet 430, so that the straight line segment 310 is disposed in the magnetic field with the highest combined intensity, Get a greater magnetic field strength.
  • the first magnet 410, the second magnet 420, and the first reinforcing magnet 430 are all strip magnets, and the first magnet 410 and the second magnet 420 are vertically disposed, and the first reinforcing magnet 430 is disposed laterally.
  • a magnet 410 and a second magnet 420 are alternately spaced apart from each other.
  • the first magnet 410 and the second magnet 420 are disposed at intervals as a unit group, and then the plurality of unit groups are spaced apart.
  • the first magnet 410, the second magnet 420, the first magnet 410, and the second magnet 420 are arranged in an array.
  • First reinforcing magnet 430 and first magnet 410 and The two magnets 420 are all located on the same side of the diaphragm 200, and the first reinforcing magnets 430 are arranged side by side between the adjacent first magnet 410 and the second magnet 420.
  • the first magnet 410 in one unit group and A first reinforcing magnet 430 is disposed between the second magnets 420 and between the unit groups.
  • the second magnet 420 when the audio current flows from the outer surface of the paper to the paper surface through a certain straight line segment 310 of the coil conductor, the second magnet 420 is located on the left side of the first magnet 410, and the N pole of the first magnet 410 and the second magnet 420 The S poles are respectively close to the side of the diaphragm 200, and the magnetic field lines start from the N pole of the first magnet 410 and reach the S pole of the second magnet 420 (the magnetic field direction is leftward), while the N pole of the first reinforcing magnet 430 is close to the first pole.
  • the magnet 410, the S pole of the first reinforcing magnet 430 is close to the second magnet 420, and the magnetic field line starts from the N pole of the first reinforcing magnet 430 and reaches the S pole of the first reinforcing magnet 430 (the magnetic field direction is also leftward).
  • the magnetic field of the first reinforcing magnet 430 is positively correlated with the magnetic field formed between the first magnet 410 and the second magnet 420, and the magnetic field of the coil conductor is The magnetic field strength is greatly enhanced, the driving force of the diaphragm layer 300 driving the diaphragm 200 is increased, the amplitude of the diaphragm 200 is increased, and the sound pressure level (volume) of the horn is increased. According to the left hand rule, the straight line segment 310 vibrates upward.
  • the second magnet 420 When flowing through the connecting section 320 and flowing through a straight line segment 310 parallel to the nearest straight line segment 310, the second magnet 420 is located on the right side of the first magnet 410, and the N pole and the second magnet 420 of the first magnet 410
  • the S poles are respectively close to the side of the diaphragm 200, and the magnetic field lines start from the N pole of the first magnet 410 and reach the S pole of the second magnet 420 (the magnetic field direction is right), and the N pole of the first reinforcing magnet 430 is close to the first pole.
  • the S pole of the first reinforcing magnet 430 is close to the second magnet 420, and the magnetic field line starts from the N pole of the first reinforcing magnet 430 and reaches the S pole of the first reinforcing magnet 430 (the magnetic field direction is also to the right), in the vicinity One side of the diaphragm 200, due to the action of the first reinforcing magnet 430, the magnetic field of the first reinforcing magnet 430 is positively correlated with the magnetic field formed between the first magnet 410 and the second magnet 420, and the magnetic field of the coil conductor The magnetic field strength is greatly enhanced, the coil layer 300 The amplitude formed by the driving diaphragm 200 is increased, and the sound pressure level (volume) of the horn is increased. According to the left hand rule, the straight line segment 310 also vibrates upward.
  • the direction of the magnetic field between the adjacent first magnet 410 and the second magnet 420 is just changed, while the N pole of the first reinforcing magnet 430 is close to the first
  • the magnet 410, the S pole of the first reinforcing magnet 430 is close to the second magnet 420, and the direction of the reinforcing magnetic field generated by the first reinforcing magnet 430 is correspondingly changed to form a positive correlation superposition effect, and the coil conductor is caused by the combination of the two magnetic fields.
  • the direction of vibration of the straight line segments 310 of the two adjacent current directions is kept uniform, and finally the entire coil conductor and the coil layer 300 are vibrated synchronously.
  • the magnetic system 400 further includes a second reinforcing magnet 440 disposed on the housing 100 and located on the other side of the diaphragm 200, second.
  • the reinforcing magnet 440 is disposed opposite to the first reinforcing magnet 430, and the direction of the magnetic field of the second reinforcing magnet 440 near the diaphragm 200 is the same as the direction of the magnetic field of the first reinforcing magnet 430 near the diaphragm 200, and therefore, the first magnet 410 Under the action of the magnetic field between the second magnet 420, the magnetic field of the first reinforcing magnet 430 and the magnetic field of the second reinforcing magnet 440, the three together form a positive correlation superposition effect, and the magnetic field strength generated by the magnetic system 400 is further increased, thereby Further improve the sound pressure level of the horn.
  • the first reinforcing magnet 430 When the first magnet 410, the second magnet 420, and the first reinforcing magnet 430 are both located on the same side of the diaphragm 200, the first reinforcing magnet 430 is just sandwiched between the first magnet 410 and the second magnet 420, first The reinforcing magnet 430 maintains a set gap between the first magnet 410 and the second magnet 420, respectively.
  • the gap between the first reinforcing magnet 430 and the first magnet 410 and the second magnet 420 may be zero.
  • the magnetic field strength of the magnetic system 400 reaches a maximum value, because the first magnet 410 and the second magnet 420 respectively Connected to the housing 100 through the magnet support frame, in order to make the diaphragm 200 breathable, to ensure the sound pressure level of the speaker, a vent hole is arranged on the magnet support frame, and the horn has a high sound through the vent hole. Pressure level.
  • the first reinforcing magnet 430 is located on one side of the diaphragm 200, and the first magnet 410 and the second magnet 420 are located on the other side of the diaphragm 200. That is, the first reinforcing magnet 430 and the first magnet 410 and the second magnet 420 are separated from each other on both sides of the diaphragm 200. Similarly, the first reinforcing magnet 430 generates a magnetic field and the magnetic field generated between the first magnet 410 and the second magnet 420 is positive. With the associated superposition effect, the magnetic field strength of the magnetic system 400 increases.
  • the diaphragm 200 includes an edge folded portion 220 and a central flat portion 210 .
  • the edge folded portion 220 is fixed on the casing 100 , and the edge folded portion 220 is curved.
  • the central plane portion 210 is located at the center of the diaphragm 200, and the central plane portion 210 is fixed by a copper ring.
  • the coil layer 300 drives the edge loop portion 220 to vibrate, the horn can maintain a good bass effect.
  • the diaphragm 200 can be made of foamed plastic, the foamed plastic is porous structure, the diaphragm 200 made of foamed plastic has good rigidity, and because of the honeycomb structure, the hollow mass is light, and the diaphragm 200 does not need to be tensioned.
  • the stretch film treatment will not appear sagging, which can maintain the good bass effect of the speaker.
  • the number of the coil layers 300 is one layer, or two layers or even more.
  • the two coil layers 300 are stacked on top of each other. Under the driving of the two coil layers 300, the amplitude of the diaphragm 200 is significantly improved, further enhancing the horn. Sound pressure level.
  • the upper and lower coil layers 300 are respectively connected to the positive and negative poles of the signal source, and the current directions of the straight segments of the upper and lower coil layers 300 are uniform, and the upper and lower layers are respectively disposed on both sides of the diaphragm 200.
  • one end of the first layer coil layer 300 is connected to the positive electrode of the signal source, and the other end of the first layer coil layer 300 is electrically connected to one end of the second layer coil layer 300, and the second layer coil layer 300 is The other end is connected to the negative pole of the signal source, and at the same time, the current directions of the straight segments of the upper and lower coil layers 300 are uniform, and the upper and lower layers are respectively disposed on both sides of the diaphragm 200.
  • the coil layer 300 can be made of a conductive material such as a diamond-like carbon material, a graphene material or a metal material.
  • the graphene material has excellent electrical and thermal conductivity, and improves the heat dissipation capability and acoustic-electric conversion rate of the horn, and the coil of the graphene material.
  • the layer 300 is lighter and has good mechanical strength, and is in line with the trend of thinning and thinning of the horn.

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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

L'invention concerne un haut-parleur avec un diaphragme vibrant plan (200). Le haut-parleur comprend un boîtier (100), le diaphragme vibrant (200), une couche de bobine (300) et un système magnétique (400), le diaphragme vibrant (200) étant disposé sur le boîtier (100) ; la couche de bobine (300) étant disposée sur le diaphragme vibrant (200) ; la couche de bobine (300) comprenant des segments de ligne droite mutuellement parallèles (310) et des segments de liaison (320) connectés entre les segments de ligne droite (310) ; le système magnétique (400) comprenant des premiers aimants (410) et des seconds aimants (420), agencés en alternance à des intervalles, et des premiers aimants de renforcement (430) agencés entre les premiers aimants (410) et les seconds aimants (420), les aimants étant adjacents les uns aux autres ; des pôles, agencés sur le même côté du diaphragme vibrant (200) et à proximité d'une extrémité du diaphragme vibrant (200), des premiers aimants (410) et des seconds aimants (420) étant opposés ; et la direction d'un champ magnétique formé, sur un côté proche du diaphragme vibrant (200), par les premiers aimants de renforcement (430) étant identique à celle d'un champ magnétique formé, sur un côté proche du diaphragme vibrant (200), par les premiers aimants (410) et les seconds aimants (420), les aimants étant adjacents les uns aux autres.
PCT/CN2017/101114 2016-09-19 2017-09-08 Haut-parleur à diaphragme vibrant plan WO2018050032A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201621062792.6 2016-09-19
CN201621062792.6U CN206136279U (zh) 2016-09-19 2016-09-19 平面振膜喇叭

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN112929801A (zh) * 2021-03-04 2021-06-08 歌尔股份有限公司 扬声器和电子设备
US20210360350A1 (en) * 2018-09-20 2021-11-18 Changzhou Amt Co., Ltd Speaker and magnetic circuit system thereof
CN113873405A (zh) * 2021-09-02 2021-12-31 头领科技(昆山)有限公司 一种平板耳机
CN114257932A (zh) * 2021-02-07 2022-03-29 歌尔股份有限公司 扬声器和电子设备
WO2023151381A1 (fr) * 2022-02-11 2023-08-17 Oppo广东移动通信有限公司 Dispositif électronique, écouteur et haut-parleur de dispositif électronique et écouteur

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CN206136279U (zh) * 2016-09-19 2017-04-26 万魔声学科技有限公司 平面振膜喇叭
WO2019134162A1 (fr) 2018-01-08 2019-07-11 深圳市韶音科技有限公司 Haut-parleur à conduction osseuse
CN107995575A (zh) * 2018-01-15 2018-05-04 京东方科技集团股份有限公司 显示面板、显示装置及显示面板的控制方法
CN110366072A (zh) * 2018-03-26 2019-10-22 薛洪 一种微型平面振膜扬声器
CN109121063B (zh) * 2018-07-27 2023-10-20 深圳倍声声学技术有限公司 一种调节动铁单元磁平衡的设备
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
CN109660923A (zh) * 2018-11-22 2019-04-19 海菲曼(天津)科技有限公司 一种具有悬边的等磁式扬声器及耳机
CN112104957A (zh) * 2019-06-17 2020-12-18 海信视像科技股份有限公司 电子设备
WO2021056293A1 (fr) * 2019-09-25 2021-04-01 常州阿木奇声学科技有限公司 Dispositif avertisseur sonore
CN214413032U (zh) * 2020-12-21 2021-10-15 常州阿木奇声学科技有限公司 喇叭
WO2023088072A1 (fr) * 2021-11-16 2023-05-25 天津大觥科技有限公司 Membrane et dispositif de haut-parleur

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CN205051863U (zh) * 2015-07-31 2016-02-24 瑞声光电科技(常州)有限公司 长冲程动圈式扬声器
CN206136279U (zh) * 2016-09-19 2017-04-26 万魔声学科技有限公司 平面振膜喇叭

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US20140146995A1 (en) * 2009-02-27 2014-05-29 Roger A. Adelman Acoustic transducer
CN204425641U (zh) * 2015-01-29 2015-06-24 瑞声科技(南京)有限公司 电磁扬声器
CN204733374U (zh) * 2015-06-23 2015-10-28 瑞声光电科技(常州)有限公司 扬声器
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210360350A1 (en) * 2018-09-20 2021-11-18 Changzhou Amt Co., Ltd Speaker and magnetic circuit system thereof
US11540056B2 (en) * 2018-09-20 2022-12-27 Changzhou Amt Co., Ltd Speaker and magnetic circuit system thereof
CN114257932A (zh) * 2021-02-07 2022-03-29 歌尔股份有限公司 扬声器和电子设备
CN114257933A (zh) * 2021-02-07 2022-03-29 歌尔股份有限公司 扬声器和电子设备
CN114286266A (zh) * 2021-02-07 2022-04-05 歌尔股份有限公司 扬声器和电子设备
CN114257933B (zh) * 2021-02-07 2023-08-29 歌尔股份有限公司 扬声器和电子设备
CN114286266B (zh) * 2021-02-07 2023-08-29 歌尔股份有限公司 扬声器和电子设备
CN114257932B (zh) * 2021-02-07 2024-05-31 歌尔股份有限公司 扬声器和电子设备
CN112929801A (zh) * 2021-03-04 2021-06-08 歌尔股份有限公司 扬声器和电子设备
CN113873405A (zh) * 2021-09-02 2021-12-31 头领科技(昆山)有限公司 一种平板耳机
WO2023151381A1 (fr) * 2022-02-11 2023-08-17 Oppo广东移动通信有限公司 Dispositif électronique, écouteur et haut-parleur de dispositif électronique et écouteur

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