WO2020258261A1 - 一种扬声器 - Google Patents
一种扬声器 Download PDFInfo
- Publication number
- WO2020258261A1 WO2020258261A1 PCT/CN2019/093738 CN2019093738W WO2020258261A1 WO 2020258261 A1 WO2020258261 A1 WO 2020258261A1 CN 2019093738 W CN2019093738 W CN 2019093738W WO 2020258261 A1 WO2020258261 A1 WO 2020258261A1
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- WIPO (PCT)
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- magnetic
- diaphragm
- magnet part
- speaker
- bowl
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Definitions
- the utility model relates to the field of sound and electricity, in particular to a loudspeaker.
- a speaker is a transducer device that converts an electrical signal into an acoustic signal.
- the speaker is widely used in various audio and mobile terminal equipment, and mobile phones are undoubtedly the most common mobile terminal equipment. At present, mobile phones have diverse functions, one of them It is high-quality music, and the speaker is one of the necessary conditions for this function.
- the loudspeaker usually includes a magnetic circuit system, a vibration system and a basin frame.
- the vibration system has a diaphragm that pushes air when the diaphragm vibrates to produce sound.
- the air below the diaphragm is blocked by the magnetic circuit system and the basin when it flows, causing it to flow improperly, resulting in noise and affecting the sense of hearing.
- the utility model aims at solving the problem that the air flow under the diaphragm is not smooth when the speaker vibration system vibrates and affects the sense of hearing, and provides a new type of speaker.
- the present invention provides a loudspeaker including a basin frame and a vibration system and a magnetic circuit system installed on the basin frame.
- the vibration system includes a diaphragm fixed on the basin frame and supported on the frame.
- the magnetic circuit system includes a magnetic bowl fixed on the side of the frame away from the diaphragm and a magnet portion fixed on the magnetic bowl, the magnet portion having a magnetic gap, One end of the voice coil away from the diaphragm extends into the magnetic gap, the magnetic bowl is provided with a leakage channel communicating with the magnetic gap, one end of the leakage channel is connected to the magnetic gap, and the other end is connected to the magnetic gap.
- the outside of the speaker communicates.
- the magnet portion includes a main magnet portion and a side magnet portion fixed to the magnetic bowl, and the side magnet portions are located on opposite sides of the main magnet portion and are spaced apart from the main magnet portion.
- the orthographic projection of the side magnet portion on the magnetic bowl covers a part of the leakage channel.
- the leakage channels are respectively arranged on opposite sides of the main magnet part.
- the leakage channel is a groove recessed from one side of the magnetic bowl close to the magnet portion, one end of the groove extends to the magnetic gap, and the other end extends to the magnetic bowl the edge of.
- At least two of the leakage channels are arranged on the same side of the main magnet part at intervals.
- At least two of the leakage channels located on different sides of the main magnet part are located on the same straight line.
- the magnetic bowl includes a bottom plate and two side plates respectively extending from two opposite sides of the bottom plate toward the basin frame, and the side magnet parts are installed on the other two opposite sides of the bottom plate,
- the leakage channel is arranged on the bottom plate.
- the beneficial effect of the present invention is: by providing a leakage channel on the magnetic bowl, the two ends of the leakage channel are respectively connected with the magnetic gap and the outside of the speaker. Therefore, when the vibration system vibrates downwards, the gas under the diaphragm can be discharged through the channel to allow air circulation. Smooth, avoid noise, thereby enhancing the auditory effect.
- Figure 1 is a schematic diagram of the structure of the speaker of the utility model
- Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
- Figure 3 is a sectional view taken along line B-B of Figure 1;
- Figure 4 is an exploded schematic diagram of the speaker of the embodiment of the utility model
- Figure 5 is a schematic diagram of the assembly of the magnetic bowl and the main magnet shown in Figure 4;
- Fig. 6 is a schematic diagram of the structure of the basin frame shown in Fig. 4.
- an element when an element is referred to as being “fixed on” or “disposed on” another element, the element may be directly on the other element or there may be a centering element at the same time.
- an element When an element is referred to as being “connected” to another element, it can be directly connected to the other element or an intermediate element may also exist.
- FIG. 1 Please refer to Figure 1, Figure 2, Figure 3 and Figure 4, according to an embodiment of the utility model provides a speaker 100, including a basin frame 10, a vibration system 20 and a magnetic circuit system 30, the basin frame 10 is used to support the vibration system 20 And the magnetic circuit system 30, the magnetic circuit system 30 is used to drive the vibration system 20 to vibrate and produce sound, and the vibration direction of the vibration system 20 is the axial direction of the speaker 100.
- the vibration system 20 includes a diaphragm 21, a voice coil 22, a lower sound diaphragm 23, and a flexible circuit board 24.
- the diaphragm 21 includes a middle dome 211 and an upper sound film 212.
- the upper sound film 212 is connected to the middle dome 211 and the frame 10 respectively.
- the vibration system 20 is fixed to the frame 10 through the upper sound diaphragm 212, one axial end of the voice coil 22 is connected to the end of the upper sound diaphragm 212 near the middle dome 211, and the other axial end is connected to the lower sound diaphragm 23 through the
- the flexible circuit board 24 is connected.
- the voice coil 22 When an alternating current is applied to the voice coil 22 through the flexible circuit board 24, the voice coil 22 will vibrate up and down under the action of the magnetic field of the magnetic circuit system 30, and drive the entire vibration system 20 to vibrate, causing the diaphragm 21 to push The air is compressed to produce sound.
- the magnetic circuit system 30 includes a magnetic bowl 31 and a magnet portion 32.
- the magnetic bowl 31 includes a bottom plate 311 and two side plates 312 respectively extending from two opposite sides of the bottom plate 311 toward the flexible circuit board 24 and fixedly connected to the flexible circuit board 24.
- the magnet The part 32 includes a main magnet part 321 and a side magnet part 322.
- the main magnet part 321 includes a main magnet 3211 fixed on the bottom plate 311 and a pole core 3212 fixed on the side of the main magnet 3211 away from the bottom plate 311.
- the side magnet part 322 Including side magnets 3221 fixed to the bottom plate 311 and located on opposite sides of the main magnet 3211 and a splint 3222 stacked on the side of the side magnet 3221 far away from the bottom plate.
- the side magnets 3221 and the side plate 312 are located on the side of the main magnet 3211. On different sides, the main magnet 3211 and the side magnet 3221 are spaced apart to form a magnetic gap 40, and the end of the voice coil 22 away from the diaphragm 21 extends into the magnetic gap 40.
- the pole core 3212 and the clamping plate 3222 are made of magnetically conductive materials, and are used to form a magnetic circuit with the main magnet 3211 and the side magnet 3221 to reduce the magnetic resistance.
- the magnetic bowl 31 is provided with a number of leakage channels 50, the leakage channels 50 are preferably formed in the bottom plate 311 on the side of the main magnet 3211, one end of the groove and the magnetic The gap 40 is connected, and the other end is connected to the outside of the speaker 100.
- the opposite sides of the main magnet 3211 are respectively provided with a number of grooves arranged in parallel at intervals.
- the diaphragm 21 When the diaphragm 21 is vibrated and squeezed downward, the air below the diaphragm 21 It can be discharged through the groove to make the air flow smoothly and avoid noise, thereby improving the sense of hearing; when the diaphragm 21 vibrates upward, the outside air can enter the speaker 100 through the groove, making the pressure inside the speaker 100 and the outside pressure the same.
- the basin frame 10 includes a ring body 11, a pedestal 12 located at the bottom of the ring body 11, and a support portion extending from the end of the ring body 12 away from the diaphragm 21 toward the voice coil 22 to support the clamping plate 3222 13. It is understandable that the basin frame 10 and the splint 3222 may be integrally formed by injection molding, or may be assembled separately.
- the lower sound diaphragm 23 includes a first edge portion 231 fixedly connected to the end of the voice coil 22 away from the diaphragm 21, a second edge portion 232 spaced apart from the first edge portion 231, and a second edge portion 232 connected to the first edge portion 231.
- a folding ring portion 233 between an edge portion 231 and a second edge portion 232, opposite sides of the first edge portion 231 are respectively connected to the inner ends of the voice coil 22 and the flexible circuit board 24, and two opposite sides of the second edge portion
- the sides are respectively connected to the outer end portion of the flexible circuit board 24 and the basin frame 10, and the folding ring portion 243 is an arc structure that bends and extends away from the flexible circuit board 24.
- two lower sound membranes 23 and flexible circuit boards 24 are provided, each lower sound membrane 23 is connected to a flexible circuit board 24, and the two lower sound membranes 23 are respectively connected to two opposite sides of the voice coil 22.
- the beneficial effect of the present invention is that by providing a leakage channel 50 on the bottom plate 311 of the magnetic bowl 31, one end of the leakage channel 50 communicates with the magnetic gap 40, and the other end communicates with the outside of the speaker 100, so when the diaphragm 21 vibrates downward , The air under the diaphragm can be discharged through the leakage channel 50, so that the air circulates smoothly and avoid noise; when the diaphragm 21 vibrates upwards, the outside air can enter the speaker 100 through the leakage channel 50 to make the pressure inside the speaker 100 The pressure is the same as the external pressure, thereby enhancing the hearing sense of the speaker 100.
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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
本申请公开了一种扬声器,包括盆架以及安装于盆架的振动***和磁路***,振动***包括固定在盆架的振膜以及支撑在振膜一侧的音圈,磁路***包括固定在盆架远离振膜一侧的磁碗以及固定于磁碗的磁体部,磁体部具有磁间隙,音圈远离振膜的一端延伸至磁间隙内,磁碗上设有连通磁间隙的泄露通道,泄露通道一端与磁间隙连通、另一端与扬声器的外侧连通。本申请的扬声器,通过在磁碗上设置泄漏通道,泄漏通道一端与磁间隙连通,另一端与扬声器的外侧连通,因此振动***向下振动时振膜下方的空气可以通过泄漏通道排出,使空气流通顺畅,避免产生杂音,从而提升听觉效果。
Description
本实用新型涉及声电领域,尤其涉及一种扬声器。
扬声器是一种将电信号转换为声信号的换能器件,扬声器广泛应用于各种音响和移动终端设备中,而手机无疑是最常见的移动终端设备,目前,手机的功能多样,其中之一就是高品质的音乐,而扬声器是实现这个功能的必备条件之一。
扬声器通常都包括磁路***、振动***和盆架,振动***具有振膜,当振膜振动时推压空气从而产生声音。然而,现有扬声器的振膜向下振动时,振膜下方的空气在流动时会受到磁路***以及盆架的阻挡,使其流动不畅,从而产生杂音,影响听感。
本实用新型针对解决扬声器振动***振动时振膜下方空气流动不畅而影响听感的问题,提供一种新型的扬声器。
为实现上述目的,本实用新型提供了一种扬声器,包括盆架以及安装于所述盆架的振动***和磁路***,所述振动***包括固定在所述盆架的振膜以及支撑在所述振膜一侧的音圈,所述磁路***包括固定在所述盆架远离所述振膜一侧的磁碗以及固定于所述磁碗的磁体部,所述磁体部具有磁间隙,所述音圈远离所述振膜的一端延伸至所述磁间隙内,所述磁碗上设有连通所述磁间隙的泄露通道,所述泄露通道一端与所述磁间隙连通、另一端与所述扬声器的外侧连通。
作为一种改进,所述磁体部包括固定于所述磁碗的主磁体部与边磁体部,所述边磁体部位于所述主磁体部的相对两侧并与所述主磁体部间隔设置形成所述磁间隙,所述边磁体部在所述磁碗上的正投影覆盖部分所述泄露通道。
作为一种改进,所述泄露通道分别设置在所述主磁体部的相对两侧。
作为一种改进,所述泄露通道为自所述磁碗靠近所述磁体部的一侧凹陷形成的凹槽,所述凹槽的一端延伸至所述磁间隙、另一端延伸至所述磁碗的边缘。
作为一种改进,至少两个所述泄露通道相互间隔设置在所述主磁体部的同一侧。
作为一种改进,至少两个位于所述主磁体部的不同侧的所述泄露通道位于同一直线上。
作为一种改进,所述磁碗包括底板和两个分别从所述底板的两相对侧朝向所述盆架延伸的侧板,所述边磁体部装设于所述底板的另外两相对侧,所述泄露通道设置于所述底板上。
本发明的有益效果是:通过在磁碗上设置泄漏通道,泄漏通道的两端分别与磁间隙和扬声器的外侧连通因此振动***向下振动时振膜下方的气体可以通过通道排出,使空气流通顺畅,避免产生杂音,从而提升听觉效果。
图1为本实用新型的扬声器的结构示意图;
图2为沿图1的A-A线的剖视图;
图3为沿图1的B-B线的剖视图;
图4为本实用新型实施例的扬声器的分解示意图;
图5为图4中所示磁碗与主磁钢的装配示意图;
图6为图4中所示盆架的结构示意图。
附图标记:100、扬声器;10、盆架;20、振动***;30、磁路***;40、磁间隙;21、振膜;22、音圈;23、下音膜;24、柔性电路板;211、中间球顶;212、上音膜;31、磁碗;32、磁体部;321、主磁体部;322、边磁体部;3211、主磁钢;3212、极芯;3221、边磁钢;3222、夹板;311、底板;312、侧板;50、泄漏通道;11、环形本体;12、柱脚;13、支撑部;231、第一边缘部;232、第二边缘部;233、折环部。
下面结合图1至图6对本实用新型作详细描述。
需要说明的是,本实用新型实施例中所有方向性指示(诸如上、下、左、右、前、后、内、外、顶部、底部……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系等,如果该特定姿态发生改变时,则该方向性指示也相应地随之改变。
还需要说明的是,当元件被称为“固定于”或“设置于”另一个元件上时,该元件可以直接在另一个元件上或者可能同时存在居中元件。当一个元件被称为“连接”另一个元件,它可以是直接连接另一个元件或者可能同时存在居中元件。
请参阅图1、图2、图3及图4,依照本实用新型实施例提供的一种扬声器100,包括盆架10、振动***20及磁路***30,盆架10用于支撑振动***20和磁路***30,磁路***30用于驱动振动***20振动发声,振动***20的振动方向为扬声器100的轴线方向。
振动***20包括振膜21、音圈22、下音膜23以及柔性电路板24,振膜21包括中间球顶211和上音膜212,上音膜212分别与中间球顶211和盆架10连接,振动***20通过上音膜212固定至盆架10,音圈22的一轴向端与上音膜212之靠近中间球顶211的一端连接,另一轴向端通过下音膜23与柔性电路板24连接,当通过柔性电路板24往音圈22通入交流电时,音圈22会在磁路***30磁场的作用下上下振动,并带动整个振动***20振动,使振膜21推压空气从而产生声音。
磁路***30包括磁碗31和磁体部32,磁碗31包括底板311和两个分别从底板311的两相对侧朝向柔性电路板24延伸并与柔性电路板24固定连接的侧板312,磁体部32包括主磁体部321和边磁体部322,主磁体部321包括固定在底板311上的主磁钢3211和固定在主磁钢3211之远离底板311一侧的极芯3212,边磁体部322包括固定于底板311并位于主磁钢3211两相对侧的边磁钢3221以及叠设于边磁钢3221之远离底板一侧的夹板3222,边磁钢3221与侧板312位于主磁钢3211的不同侧,主磁钢3211与边磁钢3221间隔设置形成磁间隙40,音圈22远离振膜21的一端延伸至磁间隙40内。极芯3212和夹板3222由导磁材料制成,用于配合主磁钢3211和边磁钢3221形成磁回路,以减小磁阻。
请参阅图2、图4及图5,磁碗31上设有若干个泄漏通道50,泄漏通道50优选为形成于底板311靠近主磁钢3211的一侧的凹槽,凹槽的一端与磁间隙40连通、另一端与扬声器100的外侧连通,主磁钢3211的相对两侧分别设有若干个间隔平行设置的凹槽,当振膜21向下振动挤压时,振膜21下方的空气可以通过凹槽排出,使空气流通顺畅,避免产生杂音,从而提升听感;当振膜21向上振动时,外界的空气可以通过凹槽进入扬声器100内部,使扬声器100内部的压强与外界的压强相同。
请参阅图4与图6,盆架10包括环形本体11、位于环形本体11底部的柱脚12以及从环形本体12远离振膜21一端朝向音圈22方向延伸以用于支撑夹板3222的支撑部13。可以理解地,盆架10与夹板3222可以通过注塑一体形成,也可以是分体组装成型。
请参阅图3和图4,下音膜23包括与音圈22之远离振膜21一端固定连接的第一边缘部231、与第一边缘部231间隔设置的第二边缘部232以及连接于第一边缘部231与第二边缘部232之间的折环部233,第一边缘部231的相对两侧分别与音圈22和柔性电路板24的内端部连接,第二边缘部的相对两侧分别与柔性电路板24的外端部和盆架10连接,折环部243为朝远离柔性电路板24方向弯曲延伸的弧形结构。优选地,下音膜23和柔性电路板24均设有两个,每个下音膜23都与一个柔性电路板24连接,两个下音膜23分别连接音圈22两相对侧。
本实用新型的有益效果在于:通过在磁碗31的底板311上设置泄漏通道50,泄漏通道50的一端与磁间隙40相通,另一端与扬声器100的外侧连通,因此振膜21往下振动时,振膜下方的空气可以通过泄漏通道50排出,使空气流通顺畅,避免产生杂音;当振膜21往上振动时,外界的空气可以通过泄漏通道50进入扬声器100内部,使扬声器100内部的压强与外界的压强相同,从而提升扬声器100的听感。
以上所述的仅是本实用新型的实施方式,在此应当指出,对于本领域的普通技术人员来说,在不脱离本实用新型创造构思的前提下,还可以做出改进,但这些均属于本实用新型的保护范围。
Claims (7)
- 一种扬声器,其特征在于,包括盆架以及安装于所述盆架的振动***和磁路***,所述振动***包括固定在所述盆架的振膜以及支撑在所述振膜一侧的音圈,所述磁路***包括固定在所述盆架远离所述振膜一侧的磁碗以及固定于所述磁碗的磁体部,所述磁体部具有磁间隙,所述音圈远离所述振膜的一端延伸至所述磁间隙内,所述磁碗上设有连通所述磁间隙的泄露通道,所述泄露通道一端与所述磁间隙连通、另一端与所述扬声器的外侧连通。
- 根据权利要求1所述的扬声器,其特征在于,所述磁体部包括固定于所述磁碗的主磁体部与边磁体部,所述边磁体部位于所述主磁体部的相对两侧并与所述主磁体部间隔设置形成所述磁间隙,所述边磁体部在所述磁碗上的正投影覆盖部分所述泄露通道。
- 根据权利要求2所述的扬声器,其特征在于,所述泄露通道分别设置在所述主磁体部的相对两侧。
- 根据权利要求3所述的扬声器,其特征在于,所述泄露通道为自所述磁碗靠近所述磁体部的一侧凹陷形成的凹槽,所述凹槽的一端延伸至所述磁间隙、另一端延伸至所述磁碗的边缘。
- 根据权利要求3所述的扬声器,其特征在于,至少两个所述泄露通道相互间隔设置在所述主磁体部的同一侧。
- 根据权利要求5所述的扬声器,其特征在于,至少两个位于所述主磁体部的不同侧的所述泄露通道位于同一直线上。
- 根据权利要求3所述的扬声器,其特征在于,所述磁碗包括底板和两个分别从所述底板的两相对侧朝向所述盆架延伸的侧板,所述边磁体部装设于所述底板的另外两相对侧,所述泄露通道设置于所述底板上。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2019/093738 WO2020258261A1 (zh) | 2019-06-28 | 2019-06-28 | 一种扬声器 |
CN201921049630.2U CN210093502U (zh) | 2019-06-28 | 2019-07-05 | 一种扬声器 |
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WO2022042317A1 (zh) * | 2020-08-25 | 2022-03-03 | 华为技术有限公司 | 一种电声换能器、扬声器模组及电子设备 |
CN213403488U (zh) * | 2020-09-04 | 2021-06-08 | 瑞声光电科技(常州)有限公司 | 发声器件 |
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CN202009488U (zh) * | 2011-03-01 | 2011-10-12 | 瑞声光电科技(常州)有限公司 | 发声器 |
CN202799130U (zh) * | 2012-08-27 | 2013-03-13 | 瑞声光电科技(常州)有限公司 | 扬声器 |
CN202818587U (zh) * | 2012-08-27 | 2013-03-20 | 瑞声光电科技(常州)有限公司 | 微型扬声器 |
US20140056447A1 (en) * | 2012-08-27 | 2014-02-27 | Aac Acoustic Technologies (Changzhou) Co., Ltd. | Speaker |
CN109151673A (zh) * | 2018-08-14 | 2019-01-04 | 瑞声科技(新加坡)有限公司 | 发声器件 |
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2019
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CN202009488U (zh) * | 2011-03-01 | 2011-10-12 | 瑞声光电科技(常州)有限公司 | 发声器 |
CN202799130U (zh) * | 2012-08-27 | 2013-03-13 | 瑞声光电科技(常州)有限公司 | 扬声器 |
CN202818587U (zh) * | 2012-08-27 | 2013-03-20 | 瑞声光电科技(常州)有限公司 | 微型扬声器 |
US20140056447A1 (en) * | 2012-08-27 | 2014-02-27 | Aac Acoustic Technologies (Changzhou) Co., Ltd. | Speaker |
CN109151673A (zh) * | 2018-08-14 | 2019-01-04 | 瑞声科技(新加坡)有限公司 | 发声器件 |
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