WO2015109699A1 - 多振膜扬声器系统 - Google Patents

多振膜扬声器系统 Download PDF

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Publication number
WO2015109699A1
WO2015109699A1 PCT/CN2014/078112 CN2014078112W WO2015109699A1 WO 2015109699 A1 WO2015109699 A1 WO 2015109699A1 CN 2014078112 W CN2014078112 W CN 2014078112W WO 2015109699 A1 WO2015109699 A1 WO 2015109699A1
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WO
WIPO (PCT)
Prior art keywords
cavity
diaphragms
diaphragm
speaker
connecting rod
Prior art date
Application number
PCT/CN2014/078112
Other languages
English (en)
French (fr)
Inventor
江超
杨健斌
李志�
Original Assignee
歌尔声学股份有限公司
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 歌尔声学股份有限公司 filed Critical 歌尔声学股份有限公司
Priority to KR1020167023668A priority Critical patent/KR101791610B1/ko
Priority to US15/114,319 priority patent/US9900697B2/en
Publication of WO2015109699A1 publication Critical patent/WO2015109699A1/zh

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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
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for 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
    • 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
    • H04R9/063—Loudspeakers using a plurality of acoustic drivers

Definitions

  • the utility model relates to the field of sound and electricity conversion technology, and more particularly to a multi-vibration film speaker system. Background technique
  • 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.
  • Conventional structures include a diaphragm and a drive unit.
  • the driving unit comprises a centering piece, and usually the centering piece is placed under the first diaphragm, and the centering piece is used to suppress polarization of the product.
  • the connecting rod passes through the diaphragms and connects them together; however, the air flow leaks through the openings in the diaphragm through which the connecting rod passes; Modulation, harmonic distortion, and leakage effects of turbulent noise that cause poor sound quality.
  • the connecting rod When solving the air leakage problem, the connecting rod can be connected to the outer connecting rod through the inner connecting rod without penetrating the diaphragm.
  • the connecting rod due to the intervention of the connecting rod, a new problem of sealing between the front and rear chambers is generated, that is, the rear cavity of the speaker is connected to the front cavity formed between the outer casings connected to the outer connecting rods. through.
  • the front and rear cavities of the speaker need to be separated, so that the rear cavity of the speaker forms a completely closed rear cavity. Therefore, based on the above-described case where the outer connecting rod is used to connect the outer casing, the structure of the speaker needs to be improved.
  • the multi-diaphragm speaker system provided by the utility model comprises a speaker device and a front and rear cavity sealing device; wherein
  • the speaker device includes at least four diaphragms; Forming a chamber of the speaker device between the adjacent two diaphragms of the speaker device, the spaced chambers together form a first acoustic cavity of the speaker device, and the chamber adjacent to the first acoustic cavity together form a second acoustic cavity of the speaker device;
  • the first acoustic cavity and the second acoustic cavity are separated by a front and rear cavity seal.
  • the speaker device further includes an inner connecting rod and an outer connecting rod; the diaphragms located in the odd-numbered positions are connected to each other through the inner connecting rod to form a first group of diaphragms, and the inner connecting rods connecting the diaphragms in the odd-numbered positions pass through The outer connecting rods are connected; the first group of vibrating membranes have the same vibration direction, and the even-numbered diaphragms are connected to each other through the inner connecting rod to form a second group of diaphragms, and the inner connecting rods connected to the even-numbered diaphragms are connected by the outer connecting rods.
  • the vibration direction of the second group of diaphragms is the same; the vibration direction of the first group of diaphragms is opposite to the vibration direction of the second group of diaphragms.
  • the inner connecting rod is connected to the rigid intermediate portion (DOME) of each diaphragm through a connection point provided on each diaphragm.
  • a preferred configuration is that the first acoustic cavity forms a front acoustic cavity of the multi-vibration diaphragm speaker system; and the second acoustic cavity forms a rear acoustic cavity of the multi-diaphragm loudspeaker system.
  • the front and rear cavity sealing means includes a front cavity sealing means and a rear cavity sealing means
  • the rear cavity sealing means comprises a first rear cavity sealing case and a second rear cavity sealing case.
  • anterior chamber sealing means is provided with an opening on one side of the first acoustic chamber to separate the first acoustic chamber from the second acoustic chamber.
  • the first rear chamber sealing case is provided at one end of the opening on the other side of the first acoustic chamber, and the second rear chamber sealing case is connected to the opening of the side of the second acoustic chamber.
  • 1 is a schematic exploded view of four diaphragm speaker systems according to an embodiment of the present invention
  • 2 is a side view of four diaphragm speaker systems in accordance with an embodiment of the present invention.
  • the reference numerals include: a first outer casing 1, a second outer casing 2, a front cavity sealing device 3, a first rear cavity sealed outer casing 4, a second rear cavity sealed outer casing 5, and a first outer casing of the 80 degree opening 6 and 6 ', 90 degree openings 7 and 7' of the first outer casing, magnetic circuit 8, outer connecting rod 9, diaphragm 10.
  • the multi-diaphragm film is adopted to increase the radiation area of the speaker device, so the diaphragms located at the odd-numbered position and the even-numbered position are respectively connected through the external connecting rod to form two sets of diaphragms, and the respective diaphragms are formed.
  • the cavity is sleeved with the outer casing for sealing purposes.
  • a sealing device is added to separate the front and rear chambers of the speaker.
  • the inner connecting rod and the outer connecting rod are used in the utility model, in the process of manufacturing the speaker, the connection between the respective diaphragms can be realized without penetrating the diaphragm, and air leakage and poor sound quality are avoided, and the sound is improved.
  • the vocal efficiency of the speaker also reduces the difficulty of making the speaker.
  • the multi-diaphragm speaker system provided by the utility model comprises a speaker device and a front and rear cavity sealing device; the speaker device comprises at least four diaphragms; a chamber for forming a speaker device between two adjacent diaphragms of the speaker device, the spaced chambers The first acoustic cavity of the speaker device is formed together, and the chamber adjacent to the first acoustic cavity forms a second acoustic cavity of the speaker device; the first acoustic cavity and the second acoustic cavity are separated by the front and rear cavity sealing devices.
  • the speaker device further comprises an inner connecting rod and an outer connecting rod; the diaphragms located in the odd digits are connected to each other by the inner connecting rod to form a first group of diaphragms, and the inner connecting rods connected to the diaphragms of the odd digits are connected by the outer connecting rods;
  • the first group of diaphragms have the same vibration direction; the diaphragms located in even numbers are connected to each other by internal connecting rods to form a second group of diaphragms, and the inner connecting rods connected to the diaphragms of even numbers are connected by external connecting rods;
  • the vibration direction of the membrane is the same; the vibration direction of the first group of diaphragms is opposite to the vibration direction of the second group of diaphragms.
  • the inner connecting rod is connected to the rigid intermediate portion of each diaphragm through a connection point provided on each diaphragm. It should be noted that a connection point is provided on the diaphragm, and the diaphragm is connected to the inner connecting rod through the connection point.
  • the inner connecting rod comprises a long rod and a short rod, and the long rod and the short rod of the inner connecting rod are alternately distributed in the first group of diaphragms; meanwhile, the long rod and the short rod of the inner connecting rod are in the second group of diaphragms Interlaced with each other, and in the initial diaphragm of the first group of diaphragms and the second group of diaphragms, the long and short rods of the inner connecting rod are staggered with each other, and the inner connecting rod is disposed through each diaphragm
  • the connection point is connected to the rigid intermediate portion of the four diaphragms.
  • the connecting rod is placed in the rigid intermediate portion of the diaphragm. The position can effectively suppress the oscillation mode and the bending vibration mode above the diaphragm.
  • the long rod of the inner connecting rod is connected to the diaphragm in a 1/2 region of the rigid intermediate shaft of the diaphragm, and the inner connecting is
  • the short rod of the rod is more likely to inhibit the bending vibration of the diaphragm in the 1/4 region of the rigid intermediate shaft of the diaphragm.
  • the first acoustic cavity forms a front acoustic cavity of the multi-vibration diaphragm speaker system; and the second acoustic cavity forms a rear acoustic cavity of the multi-vibration diaphragm speaker system.
  • the front and rear cavity sealing device comprises a front cavity sealing device and a rear cavity sealing device, the rear cavity sealing device comprises a first rear cavity sealing shell and a second rear cavity sealing shell; the front cavity sealing device in the front and rear cavity sealing device is arranged in the first acoustic cavity An opening on one side to separate the first acoustic cavity from the second acoustic cavity; a first rear cavity sealing case disposed at one end of the opening on the other side of the first acoustic cavity, and a second rear cavity sealing case and the side of the second acoustic cavity The openings are connected.
  • the front and rear acoustic cavities of the multi-vibration membrane speaker system are not determined, and the first acoustic cavity may also be the rear acoustic cavity of the multi-diaphragm speaker system; the second acoustic cavity may also be the front acoustic cavity of the multi-diaphragm speaker.
  • the outer connecting rod is connected to the inner connecting rod through the opening of the first sound chamber, and the first sound chamber formed by each diaphragm in the first group of diaphragms is connected by the outer connecting rod connecting the inner connecting rods of the first group of diaphragms;
  • An opening is also provided in the second acoustic cavity formed by each of the two sets of diaphragms, and the positions of the openings of the second acoustic cavity and the openings of the first cavity are offset from each other.
  • the respective cavities formed by the respective diaphragms of the first group of diaphragms are in communication, because the inner connecting rods and the outer connecting rods are connected between the first group of vibrating membranes, in the process of interconnection, in the Each of the cavities formed by the plurality of diaphragms is provided with an opening for allowing the inner connecting rod outer connecting rods to be connected to each other; therefore, the respective cavities formed by the first group of vibrating membranes are connected to each other due to the design of the openings
  • the larger cavity is the first cavity.
  • the second group of diaphragms are each The respective cavities formed by the diaphragm body also need to be connected to form a larger cavity.
  • openings are formed in the respective cavities formed by the respective diaphragms of the second group of diaphragms described above, and the openings are designed to make
  • the individual cavities formed by the respective diaphragms of the two groups of diaphragms can be connected into one large cavity, that is, the second acoustic cavity.
  • a front cavity sealing device is provided in each cavity formed by the first group of vibrating membranes, and the front cavity sealing device enables separation of the front and rear acoustic cavities .
  • a back cavity seal is also required.
  • the larger cavity formed by each small cavity of the first group of diaphragms can be used as the front cavity, and if it is used as the front cavity, the opening is also disposed at the opposite position of each small cavity, so as to be connected with the speaker.
  • the outside is connected.
  • the larger cavity (first acoustic cavity) composed of the small cavities of the first group of diaphragms can also serve as the rear cavity, since the anterior chamber sealing device is disposed at the opening position where the inner connecting rod and the outer connecting rod are connected to the first acoustic cavity, Then the back cavity is the sealing device.
  • the second cavity formed by the small cavity and the back cavity sealing device formed by the second group of diaphragms can be used as the front cavity; if it is the front cavity, an opening is provided at a certain position of the back cavity sealing device. So that the front cavity communicates with the outside of the speaker; if it is a rear cavity, the rear cavity sealing device is directly disposed at all opening positions of the respective cavities formed by the second group of diaphragms, and the respective cavities formed with the second group of diaphragms Connected to form a sealed back cavity.
  • a multi-diaphragm film is used to increase the radiation range of the speaker, and the number of the diaphragms may be an even number or an odd number, at least four.
  • a speaker device having four diaphragms will be taken as an example, and a specific embodiment of the present invention will be described in detail with reference to the accompanying drawings.
  • FIG. 1 and 2 respectively show a decomposed structure and a side view structure of four diaphragm speaker systems in accordance with an embodiment of the present invention.
  • the four diaphragm speaker systems provided by the present invention include a speaker device and a front and rear cavity sealing device, wherein the speaker device includes four diaphragms 10, an inner connecting rod, an outer connecting rod 9 and Magnetic circuit 8.
  • a chamber of the speaker device is formed between the adjacent two diaphragms 10, and the spaced chambers together form a first acoustic cavity of the speaker device, that is, a front acoustic cavity forming a multi-vibration diaphragm speaker system, and a chamber adjacent to the first acoustic cavity Forming a second acoustic cavity of the speaker device, that is, forming a rear acoustic cavity of the multi-diaphragm speaker system; the first acoustic cavity and the second acoustic cavity are separated by the front and rear cavity sealing devices.
  • the four diaphragm speaker systems include a pair of first housing 1, second housing 2, front and rear chamber sealing means, at least four diaphragms 10, inner connecting rods (not shown in the drawings), and outer connecting rods 9 , Magnetic circuit 8.
  • the front and rear cavity seals include a front chamber seal 3 and a rear chamber seal.
  • the rear cavity sealing device comprises a pair of first rear cavity sealing outer casing 4 and second rear cavity sealing outer casing 5.
  • first outer casing 1 and the second outer casing 2 are respectively curved, and the first outer casing 1 and the second outer casing 2 are both racetrack-shaped and elliptical. That is, in the present invention, the structures of the first outer casing 1 and the second outer casing 2 may be racetrack-shaped or elliptical, and both ends of the racetrack shape and the elliptical shape are curved.
  • a 180 degree opening 6 and a 90 degree opening 7 are provided on the first outer casing 1, wherein the 180 degree opening 6 is disposed at an arcuate position of one end of the first outer casing 1 at a 90 degree opening. 7 is disposed on an arc of the other end of the first outer casing 1 opposite to the 180-degree opening 6 position.
  • the two 180 degree openings 6 and 6' of the pair of first outer casings 1 are in communication with the outside of the speaker, and the two 90 degree openings 7 and 7' of the pair of first outer casings 1 are connected by the outer connecting rod 9.
  • the diaphragm of the speaker is at least four, and an outer connecting rod 9 is disposed between the 90-degree opening 7 and the 90-degree opening 7' of the pair of first outer casings 1, and the diaphragm is connected to the inner connecting rod, and the inner connecting rod (not shown) Connected by the outer connecting rod, the inner connecting rod is connected to the rigid intermediate portion of the diaphragm through the connection point provided on the diaphragm 10.
  • the diaphragms in the odd-numbered positions are connected to each other by the inner connecting rod to form a first group of diaphragms, and the inner connecting rods connected to the diaphragms of the odd-numbered positions are connected by the outer connecting rods 9; the vibration directions of the first group of diaphragms are the same.
  • the diaphragms located in the even position are connected to each other by the inner connecting rod to form a second group of diaphragms, and the inner connecting rods connected to the diaphragms of the even positions are connected by the outer connecting rods 9; the vibration directions of the second group of diaphragms are the same.
  • the vibration direction of the first group of diaphragms is opposite to the vibration direction of the second group of diaphragms.
  • the size of the opening designed on the outer casing has no specific degree, and can be determined according to actual conditions. It is a preferred embodiment to provide a 180 degree opening on the outer casing or a 90 degree opening.
  • the diaphragm includes a rigid intermediate portion and a folded portion at the edge position, and the rigid intermediate portion of the diaphragm mentioned in the present utility model is a rigid portion located at the center of the diaphragm.
  • the diaphragm is divided into two groups, namely an odd array and an even array. Among them, when driving the diaphragm, a set of magnetic circuits is required for driving; the diaphragm of the odd array is driven by one of the magnetic circuits. Vibration is performed, and the even array is vibrated by another magnetic circuit drive.
  • a 90 degree opening (not shown) is provided on the second outer casing 2; wherein the second outer casing 2 is disposed in the middle of the pair of first outer casings 1, and a pair of first outer casing 1 has a 180 degree opening 6 Corresponding to 6' and the 90 degree openings 7 and 7' of the first outer casing 1, respectively, the 90 degree opening of the second outer casing
  • the positions of the mouth and the 90 degree openings 7 and 7' of the first outer casing are offset from each other; wherein a pair of first outer casings 1 respectively form a small front cavity, and the second outer casing forms a small rear cavity.
  • the 180-degree opening 6 and the 180-degree opening 6' of the two first outer casings 1 correspond to the 90-degree opening 7 of the two first outer casings 1
  • the 90 degree opening of the second outer casing is offset from the 90 degree opening 7 of the first outer casing and the 90 degree opening 7' of the first outer casing; a pair of first outer casings 1 form a speaker Two small front chambers, the second outer casing forming a small rear cavity of the speaker.
  • the 90 degree opening of the second outer casing and the 90 degree opening 7 and 7' of the first outer casing are mutually displaced, in preparation for the back cavity sealing, and the 90 degree opening and the rear cavity of the second outer casing
  • the sealing device is connected, and the front chamber sealing device connects the two small front chambers and is completely isolated from the entire rear chamber sealing device.
  • the front cavity sealing device 3 is disposed at a position of the 90 degree opening 7 of the first outer casing and the 90 degree opening 7' of the first outer casing, so that the front cavity sealing device 3 communicates with the two first outer casings, and The two small front chambers formed by a pair of first outer casings are joined to form a large front cavity.
  • a pair of first rear cavity sealed casings 4 are respectively disposed at one ends of the 180 degree openings 6 of the pair of first casings, and the 180 degree openings 6 of the two first casings communicate with the outside of the speaker.
  • the second rear cavity sealed casing 5 is connected to the 90 degree opening of the second casing 2, and the small rear cavity of the speaker formed by the second casing 2 passes through the 90 degree opening of the second casing 2, and the second rear cavity sealing casing 5 and a pair
  • the sealed space formed by the first rear cavity sealed casing 4 is connected to form a large rear cavity of the speaker; and, the front cavity sealing device 3 separates the sealed space from the large front cavity of the speaker.
  • the second rear cavity sealing outer casing 5 and the pair of first rear cavity sealing outer casings 4 form a sealed space, and the sealed space is connected to the small rear cavity through the 90 degree opening of the second outer casing to form a large rear cavity, the large rear cavity
  • a front chamber sealing device 3 is also provided, and the front chamber sealing device 3 completely separates the large rear chamber from the front chamber to form a sealed large rear chamber; therefore, the front chamber sealing device 3 is designed to make the sound of the front and rear chambers of the speaker Completely separated.
  • each diaphragm is connected by means of not penetrating the diaphragm, and each diaphragm is connected by an inner connecting rod and an outer connecting rod, and two outer connecting rods are used, so that two The small front cavity communicates with the large rear cavity through the 90 degree opening of the first outer casing, and the front cavity sealing device 3 is used in order to separate the front and rear chambers.
  • the multi-vibration diaphragm speaker system provided by the present invention connects the respective diaphragms by means of not penetrating the diaphragm, and each diaphragm is connected by an inner connecting rod and an outer connecting rod, and the outer connecting rod is connected.
  • the first outer casing is sealed by a front cavity sealing device to separate the front and rear chambers of the speaker, which not only ensures the sound isolation of the front and rear chambers of the speaker, but also solves the problem of air leakage.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本实用新型提供一种多振膜扬声器系统，包括扬声器装置和前后腔密封装置；扬声器装置包括至少四个振膜；扬声器装置相邻的两振膜之间形成扬声器装置的腔室，相间隔的腔室共同形成扬声器装置的第一声腔，与第一声腔相邻的腔室形成扬声器装置的第二声腔；第一声腔和第二声腔通过前后腔密封装置分离。利用本实用新型，能够解决扬声器前后腔分离的问题。

Description

多振膜扬声器系统
技术领域
本实用新型涉及声电转换技术领域， 更为具体地， 涉及一种多振膜扬声 器系统。 背景技术
扬声器的种类繁多， 音频电能通过电磁、 压电或静电效应， 使其纸盆或 膜片振动并与周围的空气产生共振 （共鸣） 而发出声音。
传统结构的扬声器包括振膜和驱动单元。 其中， 驱动单元包括定心支片， 通常定心支片放置在第一振膜下方， 定心支片用以抑制产品的偏振。 通常采 用几个圆形的振膜， 并且连接杆穿过这几个振膜， 并将其连接在一起； 但是 由空气气流通过使连接杆穿过的振膜上的开口发生泄漏； 从而造成相互调制、 谐波失真和导致不良声音质量的湍流噪声的泄漏影响。
在解决空气泄漏问题时， 可以采用连接杆不穿透振膜的方式， 使振膜之 间通过内连接杆和外连接杆相连。 但是， 由于连接杆的介入， 又产生了新的 前、 后腔之间的密封性的问题， 也就是说， 扬声器的后腔与外连接杆连接的 外壳之间所形成的前腔之间相连通。 然而， 扬声器的前后腔之间需要分离， 使扬声器的后腔形成一个完全密闭的后腔， 因此， 基于上述采用外连接杆连 接外壳的情况， 需要对扬声器的结构进行改进。
实用新型内容
鉴于上述问题， 本实用新型的目的是提供一种多振膜扬声器系统， 以解 决需要将扬声器的前后腔分离的问题。 本实用新型提供的多振膜扬声器系统， 包括扬声器装置和前后腔密封装 置； 其中，
扬声器装置包括至少四个振膜； 扬声器装置相邻的两振膜之间形成扬声器装置的腔室， 相间隔的腔室共 同形成扬声器装置的第一声腔， 与第一声腔相邻的腔室共同形成扬声器装置 的第二声腔；
第一声腔和第二声腔通过前后腔密封装置分离。
此外， 优选的结构是， 扬声器装置还包括内连接杆和外连接杆； 位于奇数位的振膜通过内连接杆相互连接形成第一组振膜， 连接位于奇 数位的振膜的内连接杆通过外连接杆连接； 第一组振膜的振动方向相同， 位于偶数位的振膜通过内连接杆相互连接形成第二组振膜， 连接位于偶 数位的振膜的内连接杆通过外连接杆连接； 第二组振膜的振动方向相同； 第一组振膜的振动方向和第二组振膜的振动方向相反。
此外， 优选的结构是， 内连接杆通过每个振膜上设置的连接点与每个振 膜的刚性中间部 （DOME) 连接。
此外， 优选的结构是， 第一声腔形成多振膜扬声器系统的前声腔； 第二 声腔形成多振膜扬声器系统的后声腔。
此外， 优选的结构是， 前后腔密封装置包括前腔密封装置和后腔密封装 置， 后腔密封装置包括第一后腔密封壳和第二后腔密封壳。
此外， 优选的结构是， 前腔密封装置设置第一声腔的一侧的开口， 以将 所述第一声腔和所述第二声腔分离。
此外， 优选的结构是， 第一后腔密封壳设置在第一声腔的另一侧的开口 的一端， 第二后腔密封壳与第二声腔的该侧的开口相连。 从上面的技术方案可知， 本实用新型的扬声器采用连接杆不穿透振膜的 方式， 振膜之间通过内连接杆和外连接杆相连， 外连接杆连接的第一外壳之 间采用前腔密封装置进行密封连接， 使扬声器的前后腔分离。 附图说明
通过参考以下结合附图的说明及权利要求书的内容， 并且随着对本实用 新型的更全面理解， 本实用新型的其它目的及结果将更加明白及易于理解。 在附图中：
图 1为根据本实用新型实施例的四个振膜扬声器系统分解结构示意图； 图 2为根据本实用新型实施例的四个振膜扬声器系统侧视图。 其中的附图标记包括： 第一外壳 1、 第二外壳 2、 前腔密封装置 3、 第一 后腔密封外壳 4、 第二后腔密封外壳 5、 第一外壳的 1 80度开口 6和 6 '、 第一 外壳的 90度开口 7和 7 '、 磁路 8、 外连接杆 9、 振膜 10。
在所有附图中相同的标号指示相似或相应的特征或功能。 具体实施方式
以下将结合附图对本实用新型的具体实施例进行详细描述。
在本实用新型中， 采用多振膜的方式来提高扬声器装置的辐射面积， 因 此将位于奇数位和偶数位的振膜分别通过外连接杆连接组成两组振膜， 且各 个振膜之间形成的腔用外壳套上， 以达到密封的目的。 同时， 由于在扬声器 中采用了外连接杆， 因此添加密封装置以分离扬声器的前腔和后腔。
由于在本实用新型中采用了内连接杆和外连接杆， 因此在制作扬声器的 过程中， 无需穿透振膜便能够实现各振膜之间的连接， 避免空气泄漏和不良 音质的出现， 提高扬声器的发声效率， 同时也降低了扬声器的制作难度。
上述对本实用新型所提供的多振膜扬声器系统的各个部件及各部件的连 接关系作了概括性的描述， 下述将更为详细地说明本实用新型所提供的多振 膜扬声器系统的各部件之间的连接关系。
本实用新型提供的多振膜扬声器系统包括扬声器装置和前后腔密封装 置； 扬声器装置包括至少四个振膜； 扬声器装置相邻的两振膜之间形成扬声 器装置的腔室， 相间隔的腔室共同形成扬声器装置的第一声腔， 与第一声腔 相邻的腔室共同形成扬声器装置的第二声腔； 第一声腔和第二声腔通过前后 腔密封装置分离。
其中， 扬声器装置还包括内连接杆和外连接杆； 位于奇数位的振膜通过 内连接杆相互连接形成第一组振膜， 连接位于奇数位的振膜的内连接杆通过 外连接杆连接； 第一组振膜的振动方向相同； 位于偶数位的振膜通过内连接 杆相互连接形成第二组振膜， 连接位于偶数位的振膜的内连接杆通过外连接 杆连接； 第二组振膜的振动方向相同； 第一组振膜的振动方向和第二组振膜 的振动方向相反。 并且， 内连接杆通过每个振膜上设置的连接点与每个振膜 的刚性中间部连接。 需要说明的是， 振膜上设置有连接点， 振膜通过连接点与内连接杆进行 连接。 并且， 内连接杆包括长杆和短杆， 内连接杆的长杆和短杆在第一组振 膜中相互交错分布； 同时， 内连接杆的长杆和短杆在第二组振膜中相互交错 分布， 且在第一组振膜和第二组振膜的起始振膜中， 内连接杆的长杆和短杆 相互交错分布， 并且， 内连接杆通过每个振膜上设置的连接点与四个振膜的 刚性中间部连接。
由于扬声器装置的工作原理主要依靠振膜的振动产生声音， 而振膜在振 动时会有一定的振幅， 为了控制振膜在振动时的振幅， 将连接杆放置在振膜 的刚性中间部的不同位置能够有效抑制振膜以上的摆动模式及弯曲振动模 式。 而在第一组振膜和第二组振膜中， 将内连接杆的长杆在所述振膜的刚性 中间部长轴的 1/2区域内与所述振膜连接，将所述内连接杆的短杆在所述振膜 的刚性中间部长轴的 1/4 区域内与所述振膜连接更有利于抑制振膜的弯曲振 动。
具体地， 在本实用新型中， 第一声腔形成多振膜扬声器系统的前声腔； 第二声腔形成多振膜扬声器系统的后声腔。 前后腔密封装置包括前腔密封装 置和后腔密封装置， 后腔密封装置包括第一后腔密封壳和第二后腔密封壳； 前后腔密封装置中的前腔密封装置设置在第一声腔的一侧的开口， 以将第一 声腔和第二声腔分离； 第一后腔密封壳设置在第一声腔的另一侧的开口的一 端， 第二后腔密封壳与第二声腔的该侧的开口相连。
需要说明的是， 多振膜扬声器系统的前后声腔不是确定， 第一声腔也可 以为多振膜扬声器系统的后声腔； 第二声腔也可以为多振膜扬声器的前声腔。
外连接杆通过第一声腔的开口与内连接杆相连， 第一组振膜中的各个振 膜形成的第一声腔通过连接第一组振膜的内连接杆的外连接杆连接在一起； 第二组振膜中的各个振膜形成的第二声腔上也设置有开口， 并且第二声腔的 开口与第一腔体的开口的位置相互错位。
需要说明的是， 第一组振膜各个振膜形成的各个腔体是相通的， 因为在 第一组振膜之间通过内连接杆和外连接杆进行连接， 在相互连接过程中， 在 第一组振膜形成的各个腔体上设置有开口， 开口用于使内连接杆外连接杆能 够相互连接； 因此第一组振膜形成的各个腔体由于开口的设计， 各个腔体连 成为一个较大的腔体即为第一声腔。 由于在本实用新型中， 第二组振膜各个 振膜体形成的各个腔体也是需要连接成为一个较大的腔体， 因此在上述的第 二组振膜的各个振膜形成的各个腔体上设置有开口， 此开口的设计是为了使 第二组振膜各个振膜形成的各个独立的腔体能够连接成一个大的腔体即为第 二声腔。
为了使第一组振膜各个振膜形成的各个小腔体成为独立的第一声腔， 故 在第一组振膜形成的各个腔体设置前腔密封装置， 前腔密封装置使前后声腔 能够分离。 为了使第二组振膜的各个振膜形成的各个独立的腔体能够连接成 一个大的腔体即第二振膜， 还需要一个后腔密封装置。
第一组振膜的各个小腔体组成的较大的腔体即第一声腔可以作为前腔， 若作为前腔， 那么在各个小腔体中的开口相对的位置也设置开口， 以便与扬 声器的外部相通。 第一组振膜的各个小腔体组成的较大的腔体 （第一声腔） 也可以作为后腔， 由于前腔密封装置设置在内连接杆和外连接杆连接第一声 腔的开口位置， 那么后腔就为密封装置。 第二组振膜的形成的各个小腔体和 后腔密封装置组成的较大的腔体即第二声腔可以作为前腔； 若作为前腔， 那 么在后腔密封装置的某位置设置一开口， 以便前腔与扬声器外部连通； 若作 为后腔， 就直接将后腔密封装置设置在第二组振膜形成的各个腔体的所有的 开口位置， 与第二组振膜形成的各个腔体相连， 形成一个密封的后腔。
在本实用新型中采用多振膜的方式来提高扬声器的辐射范围， 振膜数量 可以为偶数个， 也可以为奇数个， 至少为四个。 下面以振膜为四个的扬声器 装置为例， 将结合附图对本实用新型的具体实施例进行详细描述。
图 1和图 2分别示出了根据本实用新型实施例的四个振膜扬声器系统分 解结构和侧视结构。
如图 1和图 2所示， 本实用新型提供的四个振膜扬声器系统包括扬声器 装置、 和前后腔密封装置， 其中， 扬声器装置包括四个振膜 10、 内连接杆、 外连接杆 9和磁路 8。 相邻的两振膜 10之间形成扬声器装置的腔室， 相间隔 的腔室共同形成扬声器装置的第一声腔， 即形成多振膜扬声器系统的前声腔， 与第一声腔相邻的腔室形成扬声器装置的第二声腔， 即形成多振膜扬声器系 统的后声腔； 第一声腔和第二声腔通过前后腔密封装置分离。
具体而言， 四个振膜扬声器系统包括一对第一外壳 1、 第二外壳 2、 前后 腔密封装置、 至少四个振膜 10、 内连接杆 （未在图中标出） 和外连接杆 9、 磁路 8。 前后腔密封装置包括前腔密封装置 3和后腔密封装置。 其中， 后腔密 封装置包括一对第一后腔密封外壳 4和第二后腔密封外壳 5。
其中， 第一外壳 1和第二外壳 2的两端分别为弧形， 第一外壳 1和第二 外壳 2均为跑道形和或者椭圆形。 也就是说， 在本实用新型中， 第一外壳 1 和第二外壳 2 的结构可以为跑道形， 也可以为椭圆形， 跑道形和椭圆型的两 端都为弧形。
如图 1所示， 在第一外壳 1上设置有一个 180度开口 6和 90度开口 7， 其中， 180度开口 6设置在第一外壳 1两端的其中一端的弧形的位置， 90度 开口 7设置在与 180度开口 6位置相对的第一外壳 1两端的另一端的弧形上。
一对第一外壳 1上的两个 180度开口 6和 6' 皆与扬声器的外部相连通， 一对第一外壳 1上的两个 90度开口 7和 7 ' 通过外连接杆 9相连接。
也就是说， 扬声器的振膜至少为 4片， 一对第一外壳 1的 90度开口 7和 90度开口 7 ' 之间设置有外连接杆 9， 振膜与内连接杆相连， 内连接杆（图中 未标出） 通过外连接杆连接， 内连接杆通过振膜 10上设置的连接点与振膜的 刚性中间部连接。 位于奇数位的振膜通过内连接杆相互连接形成第一组振膜， 连接位于奇数位的振膜的内连接杆通过外连接杆 9连接； 第一组振膜的振动 方向相同。 位于偶数位的振膜通过内连接杆相互连接形成第二组振膜， 连接 位于偶数位的振膜的内连接杆通过外连接杆 9连接； 第二组振膜的振动方向 相同。 第一组振膜的振动方向和第二组振膜的振动方向相反。
需要说明的是， 在本实用新型中， 在外壳上设计开口的大小没有具体的 度数， 可以根据实际情况来确定。 在外壳上设置 180度开口或者设置 90度开 口是一种优选的实施方式。
需要说明的是， 振膜包括刚性中间部和边缘位置的折环部， 在本实用新 型中提到的振膜的刚性中间部即为位于振膜中心位置的刚性部分。
需要另外说明的是， 振膜分为两组， 即为奇数组和偶数组， 其中， 在对 振膜进行驱动时， 需要一组磁路进行驱动； 奇数组的振膜通过其中一个磁路 驱动进行振动， 偶数组通过另一个磁路驱动进行振动。
在第二外壳 2上设置有一个 90度开口 （未在图中标出）； 其中， 第二外 壳 2设置在一对第一外壳 1的中间， 并且， 一对第一外壳 1的 180度开口 6 和 6' 以及第一外壳 1的 90度开口 7和 7 ' 分别相对应， 第二外壳的 90度开 口与第一外壳的 90度开口 7和 7 ' 的位置相互错位； 其中， 一对第一外壳 1 分别形成一个小前腔， 第二外壳形成一个小后腔。
也就是说， 在安装一对第一外壳 1和第二外壳 2时， 两个第一外壳 1的 180度开口 6和 180度开口 6 ' 相对应， 两个第一外壳 1的 90度开口 7和 90 度开口 7 '相对应， 而第二外壳的 90度开口与第一外壳的 90度开口 7和第一 外壳的 90度开口 7 ' 的位置相互错位； 一对第一外壳 1形成扬声器的两个小 前腔， 第二外壳形成扬声器的一个小后腔。
其中， 需要说明的是， 第二外壳的 90度开口与第一外壳的 90度开口 7 和 7 ' 的位置相互错位， 是为了进行后腔密封做准备， 第二外壳的 90度开口 与后腔密封装置进行相连， 同时， 前腔密封装置把两个小前腔相连， 并且能 够与整个后腔密封装置完全隔离。
在本实用新型中， 前腔密封装置 3设置在第一外壳的 90度开口 7和第一 外壳的 90度开口 7 ' 的位置， 使前腔密封装置 3与两个第一外壳相通， 并与 一对第一外壳形成的两个小前腔连成一个大前腔。
一对第一后腔密封外壳 4分别相应设置在一对第一外壳的 180度开口 6 的一端， 并且两个第一外壳的 180度开口 6与扬声器的外部相通。
第二后腔密封外壳 5与第二外壳 2的 90度开口相连， 第二外壳 2形成的 扬声器的小后腔通过第二外壳 2的 90度开口， 与第二后腔密封外壳 5和一对 第一后腔密封外壳 4形成的密封空间相连形成一个扬声器的大后腔； 并且， 前腔密封装置 3将密封空间与扬声器的大前腔分离。
也就是说， 第二后腔密封外壳 5和一对第一后腔密封外壳 4形成一个密 封空间， 密封空间通过第二外壳的 90度开口与小后腔相连形成一个大后腔， 大后腔中还设置有一个前腔密封装置 3，前腔密封装置 3使得大后腔与前腔完 全隔离， 形成一个密封的大后腔； 因此， 前腔密封装置 3 的设计能够使扬声 器前后腔的声音完全分离。
需要说明的是， 在解决扬声器空气泄漏的问题时， 采用不穿透振膜的方 式连接各个振膜， 各个振膜通过内连接杆和外连接杆连接， 由于采用了外连 接杆， 使得两个小前腔通过第一外壳的 90度开口与大后腔连通， 为了分离前 后腔， 故采用前腔密封装置 3。 通过上述实施方式可以看出， 本实用新型提供的多振膜扬声器系统， 采 用不穿透振膜的方式连接各个振膜， 各个振膜通过内连接杆和外连接杆连接， 外连接杆连接的第一外壳之间采用前腔密封装置进行密封连接， 使扬声器的 前后腔分离， 既保证了扬声器前后腔的声音隔离， 也使得空气泄漏问题得以 解决。 如上参照附图以示例的方式描述了根据本实用新型提出的多振膜扬声器 系统。 但是， 本领域技术人员应当理解， 对于上述本实用新型所提出的多振 膜扬声器系统， 还可以在不脱离本实用新型内容的基础上做出各种改进。 因 此， 本实用新型的保护范围应当由所附的权利要求书的内容确定。

Claims

权 利 要 求 书
1、 一种多振膜扬声器系统， 其特征在于， 包括扬声器装置和前后腔密封 装置； 其中，
所述扬声器装置包括至少四个振膜；
所述扬声器装置相邻的两振膜之间形成所述扬声器装置的腔室， 相间隔 的腔室共同形成所述扬声器装置的第一声腔， 与所述第一声腔相邻的腔室共 同形成所述扬声器装置的第二声腔；
所述第一声腔和所述第二声腔通过所述前后腔密封装置分离。
2、 如权利要求 1所述的多振膜扬声器系统， 其特征在于， 所述扬声器装 置还包括内连接杆和外连接杆；
位于奇数位的振膜通过所述内连接杆相互连接形成第一组振膜， 连接位 于奇数位的振膜的所述内连接杆通过所述外连接杆连接； 所述第一组振膜的 振动方向相同，
位于偶数位的振膜通过所述内连接杆相互连接形成第二组振膜， 连接位 于偶数位的振膜的所述内连接杆通过所述外连接杆连接； 所述第二组振膜的 振动方向相同；
所述第一组振膜的振动方向和所述第二组振膜的振动方向相反。
3、 如权利要求 2所述的多振膜扬声器系统， 其特征在于，
所述内连接杆通过每个振膜上设置的连接点与每个振膜的刚性中间部连 接。
4、 如权利要求 1所述的多振膜扬声器系统， 其特征在于， 所述第一声腔 形成所述多振膜扬声器系统的前声腔； 所述第二声腔形成所述多振膜扬声器 系统的后声腔。
5、 如权利要求 1-4的任一项所述的多振膜扬声器系统， 其特征在于， 所述前后腔密封装置包括前腔密封装置和后腔密封装置， 所述后腔密封 装置包括第一后腔密封壳和第二后腔密封壳。
6、 如权利要求 5所述的多振膜扬声器系统， 其特征在于，
所述前腔密封装置设置在所述第一声腔的一侧的开口， 以将所述第一声 腔和所述第二声腔分离。
7、 如权利要求 6所述的多振膜扬声器系统， 其特征在于， 所述第一后腔 密封壳设置在所述第一声腔的另一侧的开口的一端， 所述第二后腔密封壳与 所述第二声腔的该侧的开口相连。
PCT/CN2014/078112 2014-01-26 2014-05-22 多振膜扬声器系统 WO2015109699A1 (zh)

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KR20160113702A (ko) 2016-09-30

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