WO2020181887A1 - Haut-parleur - Google Patents

Haut-parleur Download PDF

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Publication number
WO2020181887A1
WO2020181887A1 PCT/CN2019/129716 CN2019129716W WO2020181887A1 WO 2020181887 A1 WO2020181887 A1 WO 2020181887A1 CN 2019129716 W CN2019129716 W CN 2019129716W WO 2020181887 A1 WO2020181887 A1 WO 2020181887A1
Authority
WO
WIPO (PCT)
Prior art keywords
voice coil
diaphragm
auxiliary
housing
auxiliary diaphragm
Prior art date
Application number
PCT/CN2019/129716
Other languages
English (en)
Chinese (zh)
Inventor
李军
Original Assignee
歌尔股份有限公司
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 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2020181887A1 publication Critical patent/WO2020181887A1/fr

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Classifications

    • 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

Definitions

  • the invention relates to the technical field of acoustic devices, in particular to a loudspeaker.
  • the dual diaphragm system of the main diaphragm and the auxiliary diaphragm is used in the industry to suppress the polarization.
  • the traditional dual diaphragm system generally adopts a single voice coil structure. The diaphragm is attached to the upper end of the voice coil, and the auxiliary diaphragm is attached to the lower end of the voice coil.
  • the auxiliary diaphragm Due to the high height of the single voice coil, the auxiliary diaphragm is greatly restricted by space, and the folding ring height of the auxiliary diaphragm is small.
  • the thinning of the folded ring part of the auxiliary diaphragm will cause the BL value to decrease and the sensitivity to decrease, which is not conducive to the improvement of product performance.
  • the main purpose of the present invention is to provide a loudspeaker, which aims to solve the problem that the loudspeaker in the prior art cannot meet the demand for large-amplitude vibration of the auxiliary diaphragm.
  • the present invention provides a loudspeaker including a housing, a vibration system and a magnetic circuit system housed in the housing, the vibration system including a diaphragm group and a voice coil group that drives the diaphragm group to vibrate,
  • the diaphragm group includes a main diaphragm and an auxiliary diaphragm
  • the voice coil group includes a first voice coil and a second voice coil
  • the first voice coil is disposed between the main diaphragm and the auxiliary diaphragm.
  • the second voice coil is arranged on a side of the auxiliary diaphragm facing away from the main diaphragm.
  • the auxiliary diaphragm includes a first horizontal portion, a first folding ring portion, and a first fixing portion sequentially arranged from the inside to the outside, and the first horizontal portion is fixed between the first voice coil and the second voice coil ,
  • the first fixing part is fixed on the housing.
  • the main diaphragm includes a central portion, a second folding ring portion, and a second fixing portion sequentially arranged from the inside to the outside.
  • the second fixing portion is fixed on the housing, and the first voice coil faces the One end of the main diaphragm is attached to the central portion, one end of the first voice coil facing the auxiliary diaphragm is attached to the first horizontal portion, and the second voice coil facing the auxiliary diaphragm One end is attached to the first horizontal part.
  • the first folding ring portion protrudes in a direction away from the first voice coil
  • the second folding ring portion protrudes in a direction away from or toward the first voice coil
  • the vibration system further includes a centering support piece, the centering support piece is arranged between the first voice coil and the auxiliary diaphragm, the centering support piece includes a base and is arranged on the base One end of the conductive circuit is electrically connected to the first voice coil and the second voice coil, and the other end of the conductive circuit is electrically connected to an external circuit.
  • the first voice coil and the second voice coil are connected in series through the conductive circuit.
  • the centering piece includes a piece horizontal portion, a piece fixing portion, and a connecting portion connecting the piece horizontal portion and the piece fixing portion, and the piece fixing portion is fixed on the housing, so The horizontal portion of the support piece is fixed between the first voice coil and the auxiliary diaphragm.
  • the number of the auxiliary diaphragm and the number of the centering support pieces are both two, and the two auxiliary diaphragms and the two centering support pieces are arranged in a one-to-one correspondence.
  • the magnetic circuit system includes a basin frame fixed to the housing, a central magnet installed on the basin frame, and side magnets distributed outside the central magnet, and a magnetic gap is formed between the central magnet and the side magnets , The first voice coil and the second voice coil are both suspended in the magnetic gap.
  • the speaker includes a first voice coil and a second voice coil, which is equivalent to disassembling the single voice coil structure into a double voice coil structure, and the auxiliary diaphragm is no longer arranged at the lower end of the second voice coil.
  • the auxiliary diaphragm is arranged between the first voice coil and the second voice coil, which increases the installation position of the auxiliary diaphragm, increases the vibration space of the auxiliary diaphragm, and meets the demand for large-amplitude vibration of the auxiliary diaphragm.
  • Fig. 1 is an exploded schematic diagram of a speaker according to an embodiment of the present invention
  • Figure 2 is a schematic cross-sectional view of a loudspeaker according to an embodiment of the invention.
  • FIG. 3 is a schematic cross-sectional view of the vibration system and the basin frame of the speaker in an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a centering support piece in a speaker according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of assembling the centering support piece and the first voice coil and the second voice coil in the speaker according to an embodiment of the present invention.
  • the directional indication is only used to explain that it is in a specific posture (as shown in the drawings). If the specific posture changes, the relative positional relationship, movement, etc. of the components below will also change the directional indication accordingly.
  • the present invention provides a speaker.
  • the speaker 100 includes a housing 10, a vibration system 20 and a magnetic circuit system 30, and the vibration system 20 and the magnetic circuit system 30 are housed in the housing 10.
  • the vibration system 20 includes a diaphragm group and a voice coil group that drives the diaphragm group to vibrate.
  • the diaphragm group includes a main diaphragm 21 and an auxiliary diaphragm 22.
  • the voice coil group includes a first voice coil 23 and a second voice coil 24.
  • the first voice coil 23 is arranged between the main diaphragm 21 and the auxiliary diaphragm 22, and the second voice coil 24 is arranged on the side of the auxiliary diaphragm 22 away from the main diaphragm 21.
  • the main diaphragm 21, the first voice coil 23, the auxiliary diaphragm 22, and the second voice coil 24 of this embodiment are arranged from top to bottom, and the first voice coil 23
  • the upper end is attached to the lower surface of the main diaphragm 21
  • the lower end of the first voice coil 23 is attached to the upper surface of the auxiliary diaphragm 22,
  • the upper end of the second voice coil 24 is attached to the lower surface of the auxiliary diaphragm 22.
  • the speaker 100 of this embodiment includes a first voice coil 23 and a second voice coil 24, which is equivalent to disassembling a single voice coil structure into a double voice coil structure, and the auxiliary diaphragm 22 is no longer arranged at the lower end of the second voice coil 24 Instead, the auxiliary diaphragm 22 is arranged between the first voice coil 23 and the second voice coil 24, so that the installation position of the auxiliary diaphragm 22 is raised, and the vibration space of the auxiliary diaphragm 22 is increased to meet the requirements of the auxiliary diaphragm 22. 22 large amplitude vibration requirements.
  • the auxiliary diaphragm 22 of this embodiment includes a first horizontal portion 221, a first folding ring portion 222, and a first fixing portion 223 which are sequentially arranged from the inside to the outside, wherein the first horizontal portion 221 is fixed on the first voice coil 23 and the second Between the two voice coils 24, the first fixing portion 223 is fixed on the housing 10 to fix both sides of the auxiliary diaphragm 22 to facilitate the vibration of the first folding ring portion 222.
  • the speaker 100 of the present embodiment has a higher installation position of the auxiliary diaphragm 22, which limits the vibration space of the first folding ring portion 222 less, that is, the first folding ring portion 222 has Sufficient vibration space can increase the height of the first folding ring portion 222, which is beneficial to improve the acoustic performance of the speaker 100.
  • the main diaphragm 21 of this embodiment includes a central portion 211, a second folding ring portion 212, and a second fixing portion 213 arranged in order from the inside to the outside.
  • the second fixing portion 213 is fixed on the housing 10, and the first voice coil 23 faces the main One end of the diaphragm 21 is attached to the central portion 211, the end of the first voice coil 23 facing the auxiliary diaphragm 22 is attached to the first horizontal portion 221, and the end of the second voice coil 24 facing the auxiliary diaphragm 22 is attached to the first horizontal portion 221.
  • the central portion 211 of the main diaphragm 21 is covered on the upper end of the first voice coil 23, the lower end of the first voice coil 23 is attached to the upper surface of the first horizontal portion 221 of the auxiliary diaphragm 22, and the second voice coil 24 The upper end is attached to the lower surface of the auxiliary diaphragm 22 to make the voice coil group drive the diaphragm group to vibrate, that is, the first voice coil 23 and the second voice coil 24 jointly drive the main diaphragm 21 and the auxiliary module to vibrate at the same time.
  • the design is reasonable.
  • the first folding ring portion 222 protrudes away from the first voice coil 23, and the second folding ring portion 212 protrudes away from or toward the first voice coil 23, that is, the first folding ring
  • the arc-shaped convex side of the portion 222 faces upward
  • the arc-shaped convex side of the second folding ring portion 212 faces downward or upward.
  • the first folding ring portion 222 and the second folding ring portion 212 can form a symmetrical support, and can provide a symmetrical restoring force when the voice coil assembly vibrates, reducing product distortion and improving reliability.
  • the vibration system 20 further includes a centering support plate 25.
  • the centering support plate 25 is disposed between the first voice coil 23 and the auxiliary diaphragm 22.
  • the centering support plate 25 includes a base body 251 and is disposed on the base body 251.
  • One end of the conductive circuit is electrically connected to the first voice coil 23 and the second voice coil 24, and the other end of the conductive circuit is electrically connected to the external circuit.
  • the other end of the conductive circuit can be connected to the terminal
  • a mobile phone is electrically connected to energize the first voice coil 23 and the second voice coil 24.
  • the arrangement of the centering support piece 25 plays a role in positioning, which can ensure that the first voice coil 23 and the second voice coil 24 reciprocate in the axial direction, and suppress the polarization problem of the first voice coil 23 and the second voice coil 24.
  • the centering support piece 25 is arranged between the first voice coil 23 and the auxiliary diaphragm 22, which can suppress the polarization problem while ensuring the vibration space of the auxiliary diaphragm 22, and meet the requirements of the auxiliary diaphragm 22 for large amplitude vibration.
  • the first voice coil 23 and the second voice coil 24 are connected in series through a conductive circuit, which facilitates the synchronous up and down movement of the first voice coil 23 and the second voice coil 24, and ensures that the main diaphragm 21 and the auxiliary diaphragm 22 vibrate. Synchronization.
  • the base 251 of this embodiment includes a branch horizontal portion 2511, a branch fixing portion 2513, and a connecting portion 2512 connecting the branch horizontal portion 2511 and the branch fixing portion 2513.
  • the branch fixing portion 2513 is fixed on the housing 10.
  • the horizontal part 2511 of the support piece is fixed between the first voice coil 23 and the auxiliary diaphragm 22 to fix the two sides of the centering support piece 25.
  • the centering support piece 25 is elastic and can follow the voice coil group and the diaphragm group. Axial reciprocating movement and movement, reasonable structure design, simple and convenient.
  • the number of auxiliary diaphragms 22 and the number of centering fins 25 are both two, and the two auxiliary diaphragms 22 and the two centering fins 25 are arranged in one-to-one correspondence.
  • the two auxiliary diaphragms 22 are arranged symmetrically, and the two auxiliary diaphragms 22 vibrate synchronously to maintain the sound balance of the speaker 100.
  • the two centering supports 25 are also arranged symmetrically, and the two qualitative supports and the two auxiliary vibrations
  • the films 22 are arranged in one-to-one correspondence, further suppressing the polarization problem of the first voice coil 23 and the second voice coil 24.
  • each centering support piece 25 includes two pads, and the two pads of one centering support piece 25 are the first pad 252 and the second pad. Disk 253, the two pads of the other centering support piece 25 are the third pad 254 and the fourth pad 255 respectively, wherein the first pad 252 and the second pad 253 are conductive, and the third pad 254 The fourth pad 255 is not conductive.
  • the current of the first voice coil 23 and the second voice coil 24 are the same.
  • the third pad 254 and the first voice coil 23 The start line is connected, the first pad 252 is connected to the end line of the first voice coil 23, the second pad 253 is connected to the start line of the second voice coil 24, and the fourth pad 255 is connected to the second voice coil 24.
  • the third pad 254 is connected to the start line of the second voice coil 24, and the first pad 252 is connected to the end line of the second voice coil 24.
  • the second pad 253 is connected to the start line of the first voice coil 23, and the fourth pad 255 is connected to the end line of the first voice coil 23; in another embodiment, the third pad 254 is connected to the first voice coil 23.
  • the start line of the coil 23 is connected, the second pad 253 is connected to the end line of the first voice coil 23, the first pad 252 is connected to the start line of the second voice coil 24, and the fourth pad 255 is connected to the first
  • the end wire of the voice coil 23 is conductive; in other embodiments, other connection methods can also be used, and it is necessary to ensure that the first voice coil 23 and the second voice coil 24 are connected in series, and the first voice coil 23 and the second voice coil 24 are connected in series. The current is the same.
  • the first voice coil 23 in this embodiment is formed by winding the first voice coil 23 wire; the second voice coil 24 is formed by winding the second voice coil 24 wire, and the diameter of the first voice coil 23 wire is the same as the first voice coil 23 wire.
  • the wire diameters of the voice coil 23 are different, and the height, resistance and weight of the first voice coil 23 and the second voice coil 24 can be freely matched to meet different usage requirements.
  • the magnetic circuit system 30 includes a basin frame 31 fixed to the housing 10, a central magnet 32 mounted on the basin frame 31, and side magnets 33 distributed outside the central magnet 32.
  • a magnetic gap is formed between the central magnet 32 and the variable magnet, and the first voice coil 23 and the second voice coil 24 are both suspended in the magnetic gap.
  • the magnetic gap of the magnetic circuit system 30 generates a magnetic field.
  • the first voice coil 23 and the second voice coil 24 reciprocate and cut the magnetic field lines in the magnetic gap to drive the main diaphragm 21 and the auxiliary diaphragm 22 to vibrate, thereby inspiring the air to sound and complete the electric Energy conversion between sounds.
  • the magnetic circuit system 30 of this embodiment further includes a central washer 34 arranged on the central magnet 32.
  • the first folding ring portion 222 of the auxiliary diaphragm 22 has sufficient vibration space, there is no need to add a groove structure on the upper surface of the basin frame 31, that is, the first folding ring on the basin frame 31 corresponding to the auxiliary diaphragm 22 The position of the part 222 will not be thinned, which improves the sensitivity and improves the product performance.
  • the vibration system 20 of the loudspeaker 100 of this embodiment further includes a reinforcing part 26 which is arranged at the upper end of the first voice coil 23 to adjust the acoustic performance of the loudspeaker 100.
  • the speaker 100 of this embodiment further includes a front cover 40, which cooperates with the housing 10 to form a protective frame, and the front cover 40 is provided with a sound outlet 401 through which sound is emitted.

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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 haut-parleur, comprenant un boîtier, un système de vibration et un système de circuit magnétique, le système de vibration et le système de circuit magnétique étant maintenus dans le boîtier, le système de vibration comprend un groupe de diaphragmes vibrants et un groupe de bobines acoustiques pour entraîner le groupe de diaphragmes vibrants à vibrer, le groupe de diaphragmes vibrants comprend un diaphragme vibrant principal et un diaphragme vibrant auxiliaire, le groupe de bobines acoustiques comprend une première bobine acoustique et une seconde bobine acoustique, la première bobine acoustique étant agencée entre la membrane vibrante principale et la membrane vibrante auxiliaire, et la seconde bobine acoustique est disposée sur un côté, s'écartant du diaphragme vibrant principal, du diaphragme vibrant auxiliaire. Le haut-parleur de la présente invention comprend la première bobine acoustique et la seconde bobine acoustique, équivalentes pour désassembler une seule structure de bobine acoustique en une structure de bobine acoustique double, et la membrane vibrante auxiliaire n'est pas disposée sur l'extrémité inférieure de la seconde bobine acoustique mais entre la première bobine acoustique et la seconde bobine acoustique, de telle sorte que la position d'installation du diaphragme vibrant auxiliaire est levée, l'espace de vibration du diaphragme vibrant auxiliaire est augmenté, et l'exigence de vibration d'amplitude importante du diaphragme vibrant auxiliaire est satisfaite.
PCT/CN2019/129716 2019-03-08 2019-12-30 Haut-parleur WO2020181887A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910178877.2 2019-03-08
CN201910178877.2A CN109769183B (zh) 2019-03-08 2019-03-08 扬声器

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WO2020181887A1 true WO2020181887A1 (fr) 2020-09-17

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WO (1) WO2020181887A1 (fr)

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CN109769183B (zh) * 2019-03-08 2020-11-13 歌尔股份有限公司 扬声器
WO2021127926A1 (fr) * 2019-12-23 2021-07-01 瑞声声学科技(深圳)有限公司 Haut-parleur
CN111641907B (zh) * 2020-06-24 2021-07-09 瑞声科技(新加坡)有限公司 发声器件
CN111935613B (zh) * 2020-10-13 2021-02-05 歌尔股份有限公司 扬声器
CN113473333B (zh) * 2021-06-28 2023-04-11 Oppo广东移动通信有限公司 电声装置及电子设备
CN114679674B (zh) * 2022-03-29 2024-06-18 维沃移动通信有限公司 扬声器及电子设备

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Publication number Priority date Publication date Assignee Title
CN202979273U (zh) * 2012-11-29 2013-06-05 郁志曰 一种同轴双喇叭驱动单元及其耳机
EP2934021A1 (fr) * 2014-04-15 2015-10-21 Bose Corporation Haut-parleur avec sections basse fréquence et haute fréquence couplées de manière flexible
CN204119458U (zh) * 2014-07-14 2015-01-21 富祐鸿科技股份有限公司 双振膜共用一磁回结构的喇叭
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CN206413193U (zh) * 2017-02-15 2017-08-15 微鲸科技有限公司 双向发声扬声器及音箱设备
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CN109769183A (zh) * 2019-03-08 2019-05-17 歌尔股份有限公司 扬声器

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