WO2016138691A1 - 一种音箱及电视机 - Google Patents

一种音箱及电视机 Download PDF

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Publication number
WO2016138691A1
WO2016138691A1 PCT/CN2015/077407 CN2015077407W WO2016138691A1 WO 2016138691 A1 WO2016138691 A1 WO 2016138691A1 CN 2015077407 W CN2015077407 W CN 2015077407W WO 2016138691 A1 WO2016138691 A1 WO 2016138691A1
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speaker
passive radiator
passive
diaphragm
wall
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PCT/CN2015/077407
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English (en)
French (fr)
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黄维财
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青岛海信电器股份有限公司
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Publication of WO2016138691A1 publication Critical patent/WO2016138691A1/zh

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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
    • 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

Definitions

  • the schematic diagram mainly includes an active drive speaker 11 and an inverter tube 12.
  • the inverted tube 12 has the function of enhancing the bass, but also generates the airflow sound when the bass is strong, and the inverted tube 12 itself also takes up part of the internal volume of the speaker, which will reduce the effective internal volume of the speaker. It is an unfavorable factor for enhancing the bass.
  • passive radiator speakers specifically the passive radiator speakers shown in FIG. 2, mainly including an active drive speaker 21 and a passive radiator 22.
  • the passive radiator 22 and the active drive speaker have similar shapes, but the passive radiator has only one bracket, no voice coil and drive magnet, and the passive radiator is not connected to any voice coil or circuit.
  • the resonant frequency of the speaker with passive radiator is matched with the resonant frequency of the active drive speaker itself, which can widen the lower limit of the speaker's playback frequency and enhance the bass effect.
  • the passive radiator itself can radiate part of the bass to further enhance the bass. .
  • the embodiment of the present application provides a speaker, including:
  • An active drive speaker and at least one pair of passive radiators comprising a first passive radiator and a second passive radiator;
  • the first passive radiator and the second passive radiator are symmetrically disposed on two symmetrical planes of the speaker wall, wherein the speaker wall constitutes a closed speaker cavity.
  • the passive radiator comprises a fixed side, a hanging edge, a diaphragm and a weight of the diaphragm;
  • the sum of the masses of the diaphragm and the diaphragm weight cannot exceed the quality that can be withstood within the elastic range of the suspension.
  • the sum of the masses of the diaphragm of the passive radiator and the weight of the diaphragm is related to the elastic coefficient of the suspension of the passive radiator and the resonant frequency of the speaker cavity.
  • the resonant frequency of the speaker cavity is determined according to the following formula:
  • the first passive radiator and the second passive radiator are exactly the same size.
  • the speaker is a sound bar.
  • the embodiment of the present application further provides a television set including the above speaker.
  • the sound box in the embodiment of the present application includes an active drive speaker and at least one pair of passive radiators, the pair of passive radiators including a first passive radiator and a second passive radiator; the first passive radiator And the second passive radiator is symmetrically disposed on two symmetrical planes of the speaker wall, wherein the speaker wall constitutes a closed speaker cavity.
  • the speaker provided by the embodiment of the present application, since the first passive radiator and the second passive radiator are symmetrically disposed on two symmetry planes of the speaker wall, when the active driving speaker vibrates backward, the speaker wall is closed.
  • the volume of the speaker cavity becomes smaller, which compresses the air in the cavity, while the air in the cavity squeezes two passive radiators, causing the two passive radiators to move outward at the same time; when the active drive speaker vibrates forward
  • the speaker wall is composed of a closed speaker cavity
  • the volume of the speaker cavity becomes larger, the air pressure in the cavity is lowered, and the atmospheric pressure compresses the two passive radiators while moving inward.
  • the first passive radiator and the second passive radiator both move inward or outward, due to the movement of the two passive radiators.
  • two equal and opposite directions can be formed on a straight line. Force. Therefore, the speaker cavity of the speaker wall is closed, and no force is generated. Therefore, when the passive radiator speaker plays the bass, the problem of the vibration of the passive radiator speaker is effectively suppressed, and the passive radiator is also provided. It also radiates a portion of the bass itself, and the dual passive radiator is more beneficial for bass boost.
  • FIG. 1 is a schematic view showing the structure of an inverted phase speaker in the prior art
  • FIG. 3 is a schematic structural diagram of a speaker provided in an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of an active driving speaker in a speaker provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a passive radiator in a sound box provided by an embodiment of the present application.
  • the sound box in the embodiment of the present application includes an active drive speaker and at least one pair of passive radiators, the pair of passive radiators including a first passive radiator and a second passive radiator; the first passive radiator And the second passive radiator is symmetrically disposed on two symmetrical planes of the speaker wall, wherein the speaker wall constitutes a closed speaker cavity.
  • the speaker provided by the embodiment of the present application, since the first passive radiator and the second passive radiator are symmetrically disposed on two symmetry planes of the speaker wall, when the active driving speaker vibrates backward, the speaker wall is closed.
  • an embodiment of the present application provides a speaker, including: an active drive speaker 32, a pair of passive radiators 33-1 and 33-2, a speaker wall 34, a speaker cavity 31, and a speaker pad. 35.
  • a pair of passive radiators includes a first passive radiator and a second passive radiator. As shown in FIG. 3, if the first passive radiator is 33-1, the second passive radiator is 33-2. Similarly, if the first passive radiator is 33-2, the first passive radiator is 33-1. In the embodiment of the present application, the specific positions of the first passive radiator and the second passive radiator are not further limited.
  • the first passive radiator 33-1 and the second passive radiator 33-2 are symmetrically disposed on two symmetrical planes of the speaker wall 34, and the first passive radiator 33-1 and The active drive speakers 32 are disposed on the same side of the speaker wall.
  • first passive radiator and the second passive radiator are exactly the same in size, so that the active driving speaker and the first passive radiator are disposed on the same surface of the speaker wall, correspondingly,
  • the second passive radiator is symmetrically disposed on the symmetry plane with the first passive radiator; or: the active drive speaker and the second passive radiator are disposed on the same surface of the speaker wall, and correspondingly, the first passive radiation
  • the device is symmetrically disposed on the symmetry plane with the second passive radiator.
  • the embodiment of the present application does not specifically limit the first passive radiator or the second passive radiator and the active driving speaker disposed on the same surface of the speaker wall.
  • a speaker pad 35 is disposed on the symmetry plane of the speaker wall 34 of the active drive speaker 32, and the speaker pad 35 is disposed outside the closed speaker cavity 31 composed of the speaker wall 34.
  • the specific position of the speaker pad 35 is not limited in the embodiment of the present application.
  • the speaker pad 35 may be disposed on the symmetry plane of the speaker wall 34 provided with the active drive speaker 32, or may be disposed on the active drive.
  • the outer side of the speaker wall 34 of the speaker 32, at the same time, the shape of the speaker pad 35 is not limited in any way in the embodiment of the present application.
  • a schematic structural diagram of an active driving speaker mainly includes a fixed edge 40 , a suspension 41 , a diaphragm 42 , a voice coil 43 , a bracket 44 , and a driving magnet 45 .
  • the schematic diagram of the passive radiator provided by the embodiment of the present application mainly includes a fixed edge 51 , a suspension 52 , a diaphragm 53 , and a bracket 54 .
  • the diaphragm 53 further includes a weight (in the figure). Not shown), the diaphragm 53 needs to be in contact with the outside air. It can be determined from Fig. 4 and Fig.
  • the active drive speaker and the passive radiator have the same outer shape, including the fixed side, the suspension side, the diaphragm and the bracket, but the passive radiator has no voice coil and drive magnet due to The passive radiator does not include the voice coil and the drive magnet, so the passive radiator is not connected to the circuit, so the passive radiator does not emit sound.
  • the first passive radiator 33-1 and the active speaker 32 are disposed on the same surface of the speaker wall, the first passive radiator 33-1 and the second passive radiator 33-2 are present. Symmetrically disposed on the two symmetrical faces of the speaker wall 34, it can be determined that the second passive radiator 33-2 is also disposed on the two symmetrical faces of the speaker wall, respectively, with the active speaker 32.
  • the speaker cavity is vibrated, thereby causing the first passive radiator and The second passive radiator is correspondingly vibrated.
  • the first passive radiator and the second passive The diaphragm of the radiator is basically designed as a planar structure.
  • the resonant frequency of the speaker cavity provided with the first passive radiator, the second passive radiator and the active drive speaker is related to the resonant frequency of the active drive speaker, so that the active drive speaker is determined in the speaker
  • the resonant frequency of the speaker cavity is also determined accordingly.
  • the sum of the mass of the diaphragm of the passive radiator and the weight of the diaphragm is related to the elastic coefficient of the suspension of the passive radiator and the resonant frequency of the cavity of the speaker. If the resonant frequency of the cavity of the speaker, the suspension of the passive radiator The elastic coefficient of the edge is determined, and the sum of the masses of the diaphragm of the passive radiator and the weight of the diaphragm can be determined.
  • the first passive radiator and the first passive radiator can be determined.
  • the elastic coefficient of the suspension of the second passive radiator similarly, if the sum of the mass of the diaphragm of the passive radiator and the weight of the diaphragm is determined, the diaphragm of the first passive radiator and the diaphragm can be determined The sum of the masses of the weights of the diaphragm and the sum of the masses of the diaphragm of the second passive radiator and the weight of the diaphragm.
  • the corresponding speaker cavity is required to have a lower resonance frequency which is consistent with the resonant frequency of the active drive speaker, and therefore, if in the formula (1)
  • the f b can be as small as possible, so that the speaker has a better bass effect.
  • the resonant frequency f b of the speaker cavity is proportional to the elastic coefficient K of the suspension of the passive radiator, and the diaphragm of the passive radiator and the weight of the diaphragm
  • the sum of mass M is inversely proportional. Therefore, in order to achieve better bass performance, the acoustic coefficient of the suspension of the passive radiator can be reduced or the weight of the counterweight of the diaphragm can be increased to make the speaker have better sound. Bass effect.
  • the size of the weight of the diaphragm is related to the density of the weight, wherein the weight generally comprises a plastic block or a metal block. Therefore, it is possible to select a weight having a larger density and a smaller density. For example, the size of the weight can be selected to match the limit size of the diaphragm, which can increase the quality of the weight.
  • the size of the passive radiator is limited by the size of the speaker wall. Therefore, in formula (1), it is better to increase the quality of the diaphragm weight to achieve the speaker. The bass effect is still subject to the size of the speaker wall.
  • the design of a passive radiator is divided into two passive radiators, and the quality of the diaphragm weight of one passive radiator can be easily solved, and the speaker has a better bass effect. . Therefore, the provision of two passive radiators in the speaker in the embodiment of the present application can make the speaker have a better bass effect.
  • the speaker is a sound bar, so that a plurality of sets of symmetrical passive radiators can be respectively disposed on the wall of the speaker, so that the speaker has a better bass effect.
  • the passive radiators disposed on the wall of the speaker are even-numbered, and the two pairs are symmetrically disposed on the speaker wall, and the number of passive radiators disposed on the speaker wall and the set position are not made. Specifically limited.
  • the diaphragm of the active driving speaker vibrates forward, the volume of the speaker cavity becomes larger, the gas density in the cavity becomes smaller, the air pressure decreases, and the external atmospheric pressure compresses the first passive radiator and The second passive radiator simultaneously moves to the inside of the speaker cavity, since the first passive radiator and the active driving speaker are disposed on the same speaker wall, and the second passive radiator and the first passive radiator Symmetrically disposed on two symmetrical planes of the speaker wall, so the first passive radiator and the second passive radiator simultaneously provide the speaker wall of the first passive radiator and the second passive radiator
  • the speaker wall has a force toward the speaker cavity; when the diaphragm of the active drive speaker vibrates backwards, the volume of the speaker cavity becomes smaller, the gas density in the cavity increases, and the air pressure rises, pushing to two The passive radiator moves outward at the same time, because the first passive radiator and the active driving speaker are disposed on the same speaker wall, and the second passive radiator is symmetrically disposed on the speaker wall with the first passive radiator Two
  • the force of the first passive radiator and the second passive radiator to the speaker wall is toward the cavity
  • the body is still facing away from the cavity, and the first passive radiator and the second passive radiator are equally sized and opposite in direction to the wall of the speaker.
  • the first passive radiator and the second passive radiator are symmetrically disposed on two symmetric surfaces of the speaker wall, which can make the speaker have better bass effect and effectively reduce the whole machine. Machine vibration due to vibration of passive radiators.

Abstract

本申请公开了一种音箱及电视机，主要包括有源驱动扬声器和至少一对无源辐射器，一对无源辐射器包括第一无源辐射器和第二无源辐射器；所述第一无源辐射器和所述第二无源辐射器对称设置在音箱壁的两个对称面上，其中，所述音箱壁组成封闭的音箱腔体。采用该方法，解决无源辐射器音箱在播放低音时，存在无源辐射器音箱整机较大振动的问题。

Description

一种音箱及电视机
本申请要求在2015年03月04日提交中国专利局、申请号为201510096330.X、发明名称为“一种音箱及电视机”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电视音响领域，特别涉及一种音箱及电视机。
背景技术
随着电视机薄型化的发展，电视机自身的音响系统由于受到体积小，厚度小的限制而无法获得较好的音响效果，因此与电视机配套使用的外置音响得到迅速发展的机会，尤其是条形音箱(Sound bar)发展迅速。
为了使Soundbar有更好的低音效果，大多数产品都会在后音箱设计一条与外界联通且与箱体体积相匹配的倒相管来降低后音箱的共振频率，如图1所示倒相管音箱示意图，主要包括有源驱动扬声器11和倒相管12。其中，倒相管12有增强低音的作用，但也会在低音较强时产生气流声，同时倒相管12本身还会占去一部分的音箱内部体积，这样做会减小音箱有效内容积，对增强低音是一个不利的因素。
为了解决上述问题，不少音箱开始使用无源辐射器音箱，具体如图2所示的无源辐射器音箱，主要包括一个有源驱动扬声器21和无源辐射器22。其中，无源辐射器22和有源驱动扬声器的外形类似，但是无源辐射器只有一个支架，没有音圈和驱动磁铁，并且无源辐射器不和任何音圈或者电路相连。设计带无源辐射器的音箱共振频率与有源驱动扬声器本身共振频率相匹配，可以达到拓宽音箱重放频率下限，增强低音的效果，同时无源辐射器本身也能辐射一部分低音来进一步增强低音。但是，当无源辐射器音箱的有源驱动扬声器在播出低音较强的音乐时，由于无源辐射器安装在音箱壁上，无源辐射器的振动会给无源辐射器音箱壁一个作用力而带动无源辐射器音箱壁的振动，当无源辐射器的振动增大时，会引起无源辐射器音箱整机的振动，甚至在桌面上跳动。针对这一现象目前大多数的解决方案是给无源辐射器音箱配重，增加无源辐射器音箱整机的质量来减轻音箱的振动，但是这样做既增加了成本又增加了音箱质量。
综上所述，无源辐射器音箱在播放低音时，存在无源辐射器音箱整机较大振动的问题。
发明内容
本申请实施例提供了一种音箱及电视机，用于解决无源辐射器音箱在播放低音时，存 在无源辐射器音箱整机较大振动的问题。
本申请实施例提供了一种音箱，包括：
有源驱动扬声器和至少一对无源辐射器，一对无源辐射器包括第一无源辐射器和第二无源辐射器；
所述第一无源辐射器和所述第二无源辐射器对称设置在音箱壁的两个对称面上，其中，所述音箱壁组成封闭的音箱腔体。
较佳地，所述无源辐射器包括固定边、悬边、振膜及所述振膜的配重块；
所述振膜及振膜的配重块的质量总和不能超过所述悬边的弹性范围内能够承受的质量。
较佳地，所述无源辐射器的振膜及所述振膜的配重块的质量总和与所述无源辐射器悬边的弹性系数及所述音箱腔体的共振频率相关。
较佳地，所述音箱腔体的共振频率根据下列公式确定：
Figure PCTCN2015077407-appb-000001
其中，fb为所述音箱腔体的共振频率，K为无源辐射器的悬边弹性系数，M为无源辐射器的振膜及所述振膜的配重块的质量总和。
较佳地，所述有源驱动扬声器和所述第一无源辐射器设置在所述音箱壁的相同面上，或者，所述有源驱动扬声器和所述第二无源辐射器设置在所述音箱壁的相同面上。
较佳地，所述第一无源辐射器和所述第二无源辐射器大小完全一致。
较佳地，所述音箱为条形音箱。
本申请实施例还提供一种包括电视机，包括上述音箱。
本申请实施例中的音箱包括有源驱动扬声器和至少一对无源辐射器，一对无源辐射器包括第一无源辐射器和第二无源辐射器；所述第一无源辐射器和所述第二无源辐射器对称设置在音箱壁的两个对称面上，其中，所述音箱壁组成封闭的音箱腔体。本申请实施例提供的音箱，由于第一无源辐射器和第二无源辐射器对称的设置在音箱壁的两个对称面上，当有源驱动扬声器向后振动时，音箱壁组成封闭的音箱腔体的体积变小，会压缩腔体内的空气，同时腔体内的空气会挤压两个无源辐射器，使得两个无源辐射器同时向外运动；当有源驱动扬声器向前振动时，音箱壁组成封闭的音箱腔体的体积变大，腔体内气压降低，大气压会挤压两个无源辐射器同时向内运动。采用上述方法，无论有源驱动扬声器是向前振动还是向后振动，第一无源辐射器和第二无源辐射器都会同时向内运动或者向外运动，由于两个无源辐射器运动的方向相反，可以在一条直线上形成两个大小相等，方向相反的 作用力。从而对音箱壁组成封闭的音箱腔体而言，没有产生任何作用力，因此当无源辐射器音箱播放低音时，有效的抑制了无源辐射器音箱整机振动的问题，同时无源辐射器本身也能辐射出一部分低音，双无源辐射器对低音增强更加有利。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术中倒相管音箱结构示意图；
图2为现有技术中无源辐射器音箱结构示意图；
图3为本申请实施例中提供的一种音箱结构示意图；
图4为本申请实施例提供的音箱中的有源驱动扬声器结构示意图；
图5为本申请实施例提供的音箱中的无源辐射器结构示意图。
具体实施方式
本申请实施例中的音箱包括有源驱动扬声器和至少一对无源辐射器，一对无源辐射器包括第一无源辐射器和第二无源辐射器；所述第一无源辐射器和所述第二无源辐射器对称设置在音箱壁的两个对称面上，其中，所述音箱壁组成封闭的音箱腔体。本申请实施例提供的音箱，由于第一无源辐射器和第二无源辐射器对称的设置在音箱壁的两个对称面上，当有源驱动扬声器向后振动时，音箱壁组成封闭的音箱腔体的体积变小，会压缩腔体内的空气，同时腔体内的空气会挤压两个无源辐射器，使得两个无源辐射器同时向外运动；当有源驱动扬声器向前振动时，音箱壁组成封闭的音箱腔体的体积变大，腔体内气压降低，大气压会挤压两个无源辐射器同时向内运动。采用上述方法，无论有源驱动扬声器是向前振动还是向后振动，第一无源辐射器和第二无源辐射器都会同时向内运动或者向外运动，由于两个无源辐射器运动的方向相反，在一条直线上形成两个大小相等，方向相反的作用力。从而对音箱壁组成封闭的音箱腔体而言，没有产生任何作用力，因此当无源辐射器音箱播放低音时，有效的抑制了无源辐射器音箱整机振动的问题，同时无源辐射器本身也能辐射出一部分低音，双无源辐射器对低音增强更加有利。
以下结合说明书附图对本申请的优选实施例进行说明，应当理解，此处所描述的优选实施例仅用于说明和解释本申请，并不用于限定本申请，并且在不冲突的情况下，本申请 中的实施例及实施例中的特征可以相互组合。
如图3所示，本申请实施例提供了一种音箱，包括：有源驱动扬声器32、一对无源辐射器33-1和33-2、音箱壁34、音箱腔体31和音箱脚垫35。
进一步地，一对无源辐射器包括第一无源辐射器和第二无源辐射器，如图3所示，若第一无源辐射器为33-1，则第二无源辐射器为33-2，同样地，若第一无源辐射器为33-2，则第一无源辐射器为33-1。在本申请实施例中，对第一无源辐射器和第二无源辐射器的具体位置不做进一步的限定。
以下实施例中，以第一无源辐射器为33-1进行介绍说明。
如图3所示，第一无源辐射器33-1和第二无源辐射器33-2呈对称设置在音箱壁34的两个对称面上，且第一无源辐射器33-1和有源驱动扬声器32设置在音箱壁的相同面上。
进一步地，第一无源辐射器和第二无源辐射器的大小完全一致，所以，可以是：有源驱动扬声器和第一无源辐射器设置在音箱壁的相同面上，相应的，第二无源辐射器与第一无源辐射器对称设置在对称面上；或者是：有源驱动扬声器和第二无源辐射器设置在音箱壁的相同面上，相应的，第一无源辐射器与第二无源辐射器对称设置在对称面上。本申请实施例对第一无源辐射器还是第二无源辐射器和有源驱动扬声器设置在音箱壁的相同面不做具体的限定。
如图3所示，设置有源驱动扬声器32的音箱壁34上的对称面上设置有音箱脚垫35，且该音箱脚垫35设置在音箱壁34组成的封闭音箱腔体31外侧。本申请实施例中对音箱脚垫35设置的具体位置不做限定，音箱脚垫35可以设置在设置有有源驱动扬声器32的音箱壁34的对称面上，也可以设置在设置有有源驱动扬声器32的音箱壁34的外侧，同时，本申请实施例对音箱脚垫35的形状也不做任何限定。
如图4所示，为本申请实施例提供的有源驱动扬声器结构示意图，主要包括固定边40、悬边41、振膜42、音圈43、支架44和驱动磁铁45。如图5所示，为本申请实施例提供的无源辐射器结构示意图，主要包括固定边51、悬边52、振膜53和支架54，其中，振膜53还包括配重块(图中未示出)，振膜53需与外界空气接触。由图4和图5可以确定，有源驱动扬声器和无源辐射器的外形是一样的，都包括固定边、悬边、振膜和支架，但是无源辐射器没有音圈和驱动磁铁，由于无源辐射器不包括音圈和驱动磁铁，所以无源辐射器不会和电路连接，故无源辐射器不会发出声音。
如图3所示，由于第一无源辐射器33-1和有源扬声器32设置在音箱壁的相同面上，第一无源辐射器33-1和第二无源辐射器33-2呈对称设置在音箱壁34的两个对称面上，所以可以确定第二无源辐射器33-2也与有源扬声器32分别设置在音箱壁的两个对称面上。
当设置有第一无源辐射器、第二无源辐射器和有源驱动扬声器的音箱中的有源驱动扬声器振动的时候，会带动音箱腔体振动，从而会引起第一无源辐射器和第二无源辐射器做相应的振动。在本申请实施例中，为了让音箱腔体振动引起的空气振动能够有效的推动第一无源辐射器和第二无源辐射器做相应的振动，第一无源辐射器和第二无源辐射器的振膜基本都设计为平面结构。
进一步地，设置有第一无源辐射器、第二无源辐射器和有源驱动扬声器的音箱腔体的共振频率与有源驱动扬声器的共振频率相关，所以，当音箱中确定有源驱动扬声器的共振频率的时候，即相应的也确定了音箱腔体的共振频率。无源辐射器的振膜及振膜的配重块的质量总和与无源辐射器悬边的弹性系数及音箱腔体的共振频率相关，若音箱腔体的共振频率、无源辐射器的悬边的弹性系数确定，就可以确定无源辐射器的振膜及振膜的配重块的质量总和。具体的，在本申请实施例中，音箱腔体的共振频率、无源辐射器的悬边的弹性系数和无源辐射器的振膜及振膜的配重块的质量总和的对应关系可通过公式(1)表示：
Figure PCTCN2015077407-appb-000002
其中，fb为音箱腔体的共振频率，K为无源辐射器的悬边的弹性系数，M为无源辐射器的振膜及所述振膜的配重块的质量总和。
在本申请实施例中，由于第一无源辐射器和第二无源辐射器的大小一致，所以，若确定无源辐射器的悬边的弹性系数，则可以确定第一无源辐射器和第二无源辐射器的悬边的弹性系数；同样地，若确定无源辐射器的振膜及该振膜的配重块的质量总和，则可以确定第一无源辐射器的振膜及该振膜的配重块的质量总和和第二无源辐射器的振膜及该振膜的配重块的质量总和。
进一步地，若要求音箱具有较好的低音效果，则相应的会要求音箱腔体需要有较低的且与有源驱动扬声器的共振频率相一致的共振频率，因此，若公式(1)中的fb能够尽可能的小，则可以使得音箱具有较好的低音效果。根据公式(1)可以确定，音箱腔体的共振频率fb和无源辐射器的悬边的弹性系数K呈正比，而与无源辐射器的振膜及所述振膜的配重块的质量总和M呈反比，所以，为了使得音箱达到较好的低音效果，可以采用减小无源辐射器的悬边的弹性系数或者增大振膜的配重块的质量来使得音箱具有较好的低音效果。
根据公式(1)可以确定，若为了使得音箱达到较好的低音效果，可以采用减小无源辐射器的悬边的弹性系数或者增大振膜的配重块的质量。若减小无源辐射器的悬边的弹性 系数来达到较好的低音效果，则相应的需要减小无源辐射器的振膜的振动幅度，若音箱腔体的振动幅度比较大，则会引起无源辐射器的振膜也会有比较大的振动幅度，进一步地导致无源辐射器的悬边的弹性系数不能够承受振膜的振动幅度。根据上述分析可以确定，若要求音箱达到较好的低音效果，只能采用增大振膜的配重块的质量。
进一步地，若为了使得音箱达到较好的低音效果，无限制的增加振膜配重块的质量，则会导致无源辐射器的悬边无法承受振膜及振膜的配重块的质量总和而破损，或者直接导致振膜无法承受配重块的质量而破损，因此，振膜及振膜的配重块的质量总和不能超过悬边的弹性范围内能够承受的质量。在本申请实施例中，振膜的配重块的尺寸与配重块的密度相关，其中，配重块一般包括塑料块或者金属块。因此可以选择尺寸较大密度较小的配重块，比如，可以选择配重块的尺寸与振膜匹配的极限尺寸，这样可以增加配重块的质量。
由于无源辐射器设置在音箱壁上，所以，无源辐射器的大小尺寸受制于音箱壁的尺寸，因此，公式(1)中采用增大振膜配重块的质量来达到音箱具有较好的低音效果，还是受制于音箱壁的尺寸。
在本申请实施例中，采用将一个无源辐射器的设计分为两个无源辐射器，容易解决一个无源辐射器的振膜配重块的质量不能够达到音箱具有较好低音的效果。因此，本申请实施例中音箱中设置两个无源辐射器能够使得音箱具有较好的低音效果。
进一步地，该音箱为条形音箱，因此音箱壁上可以分别设置多组对称的无源辐射器，从而可以使得音箱具有较好的低音效果。本申请实施例中，只有保证音箱壁上设置的无源辐射器为偶数，且两两呈对称设置在音箱壁上，则对音箱壁上设置的无源辐射器的数量及设置的位置不做具体限定。
在本申请实施例中，当有源驱动扬声器的振膜向前振动时，音箱腔体的体积会变大，腔体内气体密度变小，气压降低，外界大气压会压缩第一无源辐射器和第二无源辐射器同时向音箱腔体的内部运动，由于第一无源辐射器与有源驱动扬声器设置在同一音箱壁上，而第二无源辐射器与所述第一无源辐射器对称设置在所述音箱壁的两个对称面上，所以第一无源辐射器和第二无源辐射器，会同时给设置第一无源辐射器的音箱壁和设置第二无源辐射器的音箱壁一个朝向音箱腔体的作用力；当有源驱动扬声器的振膜向后振动时，音箱腔体的体积会变小，腔体内气体密度增大，气压升高，会推到两个无源辐射器同时向外运动，由于第一无源辐射器与有源驱动扬声器设置在同一音箱壁上，而第二无源辐射器与第一无源辐射器对称设置在所述音箱壁的两个对称面上，所以第一无源辐射器和第二无源辐射器，会同时给设置第一无源辐射器的音箱壁和设置第二无源辐射器的音箱壁一个背向音箱腔体的作用力。因此无论第一无源辐射器和第二无源辐射器给音箱壁的作用力是朝向腔 体还是背向腔体，第一无源辐射器和第二无源辐射器给音箱壁的作用力大小都是大小相等，方向相反。采用本申请实施例中第一无源辐射器和第二无源辐射器对称设置在所述音箱壁的两个对称面上，能够使得音箱具有较好的低音效果的同时，有效的减轻整机由于无源辐射器振动引起的机振。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (8)

  1. 一种音箱，其特征在于，包括：
    有源驱动扬声器和至少一对无源辐射器，一对无源辐射器包括第一无源辐射器和第二无源辐射器；
    所述第一无源辐射器和所述第二无源辐射器对称设置在音箱壁的两个对称面上，其中，所述音箱壁组成封闭的音箱腔体。
  2. 如权利要求1所述的音箱，其特征在于，所述无源辐射器包括固定边、悬边、振膜及所述振膜的配重块；
    所述振膜及振膜的配重块的质量总和不能超过所述悬边的弹性范围内能够承受的质量。
  3. 如权利要求2所述的音箱，其特征在于，所述无源辐射器的振膜及所述振膜的配重块的质量总和与所述无源辐射器悬边的弹性系数及所述音箱腔体的共振频率相关。
  4. 如权利要求3所述的音箱，其特征在于，所述音箱腔体的共振频率根据下列公式确定：
    Figure PCTCN2015077407-appb-100001
    其中，fb为所述音箱腔体的共振频率，K为无源辐射器的悬边弹性系数，M为无源辐射器的振膜及所述振膜的配重块的质量总和。
  5. 如权利要求1所述的音箱，其特征在于，所述有源驱动扬声器和所述第一无源辐射器设置在所述音箱壁的相同面上，或者，所述有源驱动扬声器和所述第二无源辐射器设置在所述音箱壁的相同面上。
  6. 如权利要求1所述音箱，其特征在于，所述第一无源辐射器和所述第二无源辐射器大小完全一致。
  7. 如权利要求1-6任一项所述音箱，其特征在于，所述音箱为条形音箱。
  8. 一种电视机，其特征在于，包括权利要求1-7任一项所述的音箱。
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CN104811852A (zh) * 2015-03-04 2015-07-29 青岛海信电器股份有限公司 一种音箱及电视机
CN105142065A (zh) * 2015-08-18 2015-12-09 无锡杰夫电声有限公司 基于对扣式无源辐射器的薄型音箱
CN105472503B (zh) * 2016-01-14 2018-10-30 佳禾智能科技股份有限公司 一种无源辐射器音箱
CN105554597B (zh) * 2016-03-03 2018-09-28 无锡杰夫电声股份有限公司 镜像式低频辐射器条形音箱
CN106454624B (zh) * 2016-11-21 2019-09-17 青岛海信电器股份有限公司 音箱组件、音箱及显示设备
CN108600925A (zh) * 2018-05-25 2018-09-28 东莞顺合丰电业有限公司 被动式辐射器及包括被动式辐射器的扬声器系统
CN114025266B (zh) * 2021-10-27 2024-01-16 惠州市众瑞声电子有限公司 一种降噪型无源辐射器
CN218387762U (zh) * 2022-03-25 2023-01-24 广州视源电子科技股份有限公司 一种音箱

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102668595A (zh) * 2009-10-26 2012-09-12 夏普株式会社 扬声器系统、视频显示装置及电视接收机
CN202998378U (zh) * 2012-11-16 2013-06-12 东莞市金业电子科技有限公司 一种双向式无源低音辐射器
CN204119424U (zh) * 2014-09-11 2015-01-21 深圳纽斯声学系统有限公司 双膜共振汉堡音箱
CN104811852A (zh) * 2015-03-04 2015-07-29 青岛海信电器股份有限公司 一种音箱及电视机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201307917Y (zh) * 2008-12-11 2009-09-09 深圳创维－Rgb电子有限公司 一种电视机音箱
CN201854402U (zh) * 2010-07-28 2011-06-01 北京爱德发科技有限公司 一种低频无源辐射器
US20120279796A1 (en) * 2011-05-06 2012-11-08 Cheng Uei Precision Industry Co., Ltd. Passive radiator
EP2800398B1 (en) * 2011-12-31 2019-09-11 Huang, Xinmin Loudspeaker and manufacturing method therefor
CN103297902A (zh) * 2013-05-07 2013-09-11 常州博士达电子有限公司 小型音箱的重低音发声装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102668595A (zh) * 2009-10-26 2012-09-12 夏普株式会社 扬声器系统、视频显示装置及电视接收机
CN202998378U (zh) * 2012-11-16 2013-06-12 东莞市金业电子科技有限公司 一种双向式无源低音辐射器
CN204119424U (zh) * 2014-09-11 2015-01-21 深圳纽斯声学系统有限公司 双膜共振汉堡音箱
CN104811852A (zh) * 2015-03-04 2015-07-29 青岛海信电器股份有限公司 一种音箱及电视机

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