WO2021103071A1 - Speaker and audio apparatus - Google Patents
Speaker and audio apparatus Download PDFInfo
- Publication number
- WO2021103071A1 WO2021103071A1 PCT/CN2019/122977 CN2019122977W WO2021103071A1 WO 2021103071 A1 WO2021103071 A1 WO 2021103071A1 CN 2019122977 W CN2019122977 W CN 2019122977W WO 2021103071 A1 WO2021103071 A1 WO 2021103071A1
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- WIPO (PCT)
- Prior art keywords
- hole
- sound
- speaker
- diaphragm
- cavity
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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
- This application relates to the field of electro-acoustic conversion technology, and in particular to a speaker and audio equipment.
- the speaker is a commonly used electronic component, mainly used for the playback of audio signals. Its working principle is that a voice coil is built in a magnetic circuit composed of magnets. The current flowing through the voice coil generates a driving force in the up and down directions to make vibrations. The membrane vibrates thereby causing the air to vibrate to produce sound.
- audio devices electronic devices with audio functions
- 4G and 5G era people’s requirements for the performance of audio device speakers are also increasing. high.
- the existing speakers still have the problems of low low frequency sensitivity and high power consumption, which cannot meet the user's requirements for speaker performance and cost.
- the purpose of this application is to provide a loudspeaker to solve the current technical problems of low frequency sensitivity and high power consumption of the loudspeaker.
- a loudspeaker includes a basin frame with a receiving space, and a vibration system and a magnetic circuit system housed in the receiving space, the vibration system including a vibration system fixed to the basin frame and used for vibrating and sounding.
- a membrane, the magnetic circuit system includes a magnetic bowl fixed to the basin frame;
- the magnetic bowl, the diaphragm, and the basin frame are enclosed to form an inner cavity
- the speaker further includes a rear cavity located on a side of the magnetic bowl away from the diaphragm and enclosed with the magnetic bowl
- the rear cover, the rear cavity is connected to the inner cavity
- the back cover is provided with a first through hole, and the speaker further includes a sound film fixed to the back cover and covering the first through hole;
- the loudspeaker further includes a sound absorbing member, and the sound absorbing member is arranged in the rear cavity.
- the sound-absorbing member is connected to the sound membrane.
- the magnetic circuit system further includes a magnet unit fixed to the magnetic bowl, the magnet unit is provided with a second through hole penetrating therethrough in the direction of vibration, and the magnetic bowl is provided with the second through hole.
- a third through hole communicating with the two through holes, the second through hole and the third through hole penetrate the inner cavity and the rear cavity.
- the speaker further includes a gas-permeable diaphragm fixed to the magnetic circuit system, and the gas-permeable diaphragm cover seals at least one of the second through hole and the third through hole.
- the first through hole, the second through hole, and the third through hole are arranged opposite to each other along the vibration direction of the diaphragm.
- the vibration system further includes a voice coil that drives the diaphragm to vibrate and produce sound
- the magnet unit includes a first magnet part provided with the second through hole, and is arranged around the first magnet part The second magnet part, a magnetic gap is left between the first magnet part and the second magnet part, and the voice coil is inserted into the magnetic gap and surrounds the first magnet part.
- the vibrating membrane includes a dome in the middle position and a folding ring fixedly connected to the dome, and the folding ring is connected to the basin frame.
- the sound film includes a flat plate part located at an intermediate position and a bent part connected to the flat plate part.
- a leak hole is provided on the rear cover, and the leak hole communicates with the rear cavity and the external space.
- the sound-absorbing member is fixed to the flat plate portion.
- the present application also provides an audio device, which includes the aforementioned speaker.
- the beneficial effects of the speaker provided by the present application are: since the inner cavity is connected to the rear cavity, the vibration of the diaphragm causes the compression of the air in the inner cavity to affect the air flow in the rear cavity; the change of the air in the rear cavity will cause the vibration of the sound diaphragm. Thereby increasing the volume of the rear cavity, reducing F0, that is, the lowest resonant frequency, thereby improving the low-frequency sensitivity of the speaker and effectively reducing power consumption. Due to the addition of the sound-absorbing member, the propagation path of the sound signal entering the rear cavity is lengthened, and the sound absorption rate is high, thereby further improving the low-frequency sensitivity of the speaker and reducing the power consumption.
- the audio device provided by the present application has all the beneficial effects of the speaker due to the use of the above-mentioned speaker, and will not be repeated here.
- FIG. 1 is a schematic diagram 1 of the structure of the loudspeaker provided by this application.
- Figure 2 is a second structural diagram of the loudspeaker provided by this application.
- FIG. 3 is a schematic diagram of the top view structure of the speaker provided by this application.
- Figure 4 is a schematic diagram of the A-A cross-sectional structure in Figure 3;
- Figure 5 is the first schematic diagram of the explosive structure of the loudspeaker provided by this application.
- Fig. 6 is the second schematic diagram of the exploded structure of the loudspeaker provided by this application.
- the terms “length”, “width”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top” , “Bottom”, “Inner”, “Outer”, etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying what is referred to The device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application.
- the terms “first” and “second” are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.
- the present application discloses a speaker 10, which includes a basin frame 100, a vibration system 200, a magnetic circuit system 300, a back cover 400, a sound film 500 and a sound absorbing member 600.
- the basin frame 100 has a containing space 110
- the vibration system 200 and the magnetic circuit system 300 are both contained in the containing space 110
- the magnetic circuit system 300 drives the vibration system 200 to vibrate and produce sound.
- the vibration system 200 includes a diaphragm 210 and a voice coil 220.
- the diaphragm 210 is fixed on the basin frame 100 and used for vibrating and sounding.
- the magnetic circuit system 300 includes a magnet unit 320 and a magnetic bowl 310.
- the magnetic bowl 310 is fixed on the basin frame 100.
- the diaphragm 210, the magnetic bowl 310 and the basin frame 100 are enclosed to form an inner cavity 11.
- the rear cover 400 is connected to the basin frame 100 and is located on the side of the magnetic bowl 310 away from the diaphragm 210.
- the cover 400 and the magnetic bowl 310 are enclosed to form a back cavity 12, and the inner cavity 11 and the back cavity 12 are in communication with each other; in addition, a first through hole 410 is opened on the back cover 400, and the first through hole 410 communicates with the back cavity 12 and In the external space, the sound film 500 is connected to the back cover 400 and covers the first through hole 410.
- the sound film 500 is an elastic member.
- the sound absorbing member 600 is disposed in the rear cavity 12.
- the sound absorbing member 600 includes a gas-permeable packaging component and a sound-absorbing material arranged in the gas-permeable packaging component.
- the sound-absorbing material is preferably a sound-absorbing powder.
- the vibration of the diaphragm 210 enables the compression of the air in the inner cavity 11 to drive the air flow in the back cavity 12, and the change of the air in the back cavity 12 will cause the sound diaphragm 500 to vibrate, thereby increasing
- the large volume of the rear cavity 12 reduces the FO (lowest resonant frequency), thereby improving the low frequency sensitivity of the speaker 10 and effectively reducing power consumption.
- the propagation path of the sound signal entering the rear cavity 12 is lengthened, and the sound absorption rate is high, thereby further improving the low-frequency sensitivity of the speaker 10 and reducing power consumption.
- a gap is left between the periphery of the magnetic bowl 310 and the basin frame 100, and the inner cavity 11 can communicate with the rear cavity 12 through the gap between the magnetic bowl 310 and the basin frame 100.
- the sound film 500 and the rear cover 400 are glued and connected.
- the sound film 500 is in the shape of a flat plate. In this way, the difficulty of processing and assembly is low, which helps to save costs.
- the sound-absorbing member 600 is a mass member made of sound-absorbing material.
- the sound absorbing member 600 is connected to the sound membrane 500, and thus can vibrate with the vibration of the sound membrane 500, that is, the sound absorbing material is also in a movable state in the rear cavity, so that Fo can be further reduced and optimized
- the low frequency sensitivity of the speaker 10 reduces power consumption.
- the sound film 500 includes a flat plate portion 510 at an intermediate position and a bent portion 520 surrounding the flat plate portion 510.
- the bent portion 520 is connected to the flat plate portion 510 and forms a ring shape by itself, and in this embodiment In this case, the bent portion 520 protrudes from the flat portion 510 in a direction away from the rear cavity 12, so that the volume of the rear cavity 12 can be further increased, low frequency sensitivity is optimized, and power consumption is reduced.
- the above-mentioned sound absorbing member 600 is fixed to the flat plate portion 510 of the sound film 500. In this way, it is convenient to install the sound absorbing member 600 on the sound film 500 stably.
- the magnet unit 320 is fixed to the magnetic bowl 310. Specifically, the magnet unit 320 is stacked on the side of the magnetic bowl 310 close to the diaphragm 210, wherein the magnet unit 320 is provided with a penetrating through it in the direction of vibration.
- the magnetic bowl 310 is provided with a third through hole 311 communicating with the second through hole 3213, that is, the second through hole 3213 and the third through hole 311 penetrate the inner cavity 11 and the rear cavity 12, The inner cavity 11 and the rear cavity 12 communicate with each other through the second through hole 3213 and the third through hole 311.
- the first through hole 410, the second through hole 3213, and the third through hole 311 are directly opposite to each other.
- the airflow change in the inner cavity 11 can affect the air movement in the back cavity 12 to a greater extent, and more directly affect the vibration of the sound diaphragm 500, so that the volume of the back cavity 12 is in the vibration and sound process of the diaphragm 210.
- a greater degree of expansion can further optimize the low-frequency sensitivity of the speaker 10 and reduce power consumption.
- the sound-absorbing material in the encapsulating vent 600 is also directly opposite to the second through hole 3212 and the third through hole 311, so that more sound signals can be quickly absorbed by the sound-absorbing material, thereby effectively improving the sound of the speaker. Sound quality.
- the speaker 10 further includes a breathable diaphragm 700 fixed to the magnetic circuit system 300.
- the breathable diaphragm 700 is connected to the magnet unit 320 and blocks the second through hole 3213.
- the inner cavity 11 and The communication condition of the rear cavity 12 also plays a certain blocking effect, so that the gas communication speed between the inner cavity 11 and the rear cavity 12 is maintained within a certain range, and the sound quality of the speaker 10 is ensured.
- the breathable membrane 700 covers at least one of the second through hole 3213 and the third through hole 311, that is, the breathable membrane 700 may only be arranged on the magnetic bowl 310 to cover the third through hole 311 , Or two air-permeable diaphragms are respectively fixed on the main magnetic steel 3211 and the magnetic bowl 310 to cover the second through hole 3213 and the third through hole 311, which are not uniquely limited here.
- the magnet unit 320 includes a first magnet part 321 and a second magnet part 322, wherein the second magnet part 322 is arranged around the first magnet part 321, and is left between the first magnet part 321 and the first magnet part 321.
- the magnetic gap 324 that is, the gap left between the first magnet portion 321 and the second magnet portion 322 satisfies the condition that there is a magnetic induction between the two.
- at least one of the first magnet part 321 and the second magnet part 322 is a permanent magnet.
- One end of the voice coil 220 is inserted into the magnetic gap, and the other end is in contact with the diaphragm 210.
- the current flowing through the voice coil 220 is placed in the magnetic line of induction between the first magnet part 321 and the second magnet part 322.
- the current change can generate corresponding electromagnetic induction force, thereby driving the diaphragm 210 to vibrate and produce sound.
- the first magnet portion 321 includes a main magnet 3211 and a main pole core 3212.
- the main pole core 3212 is stacked on the side of the main magnet 3211 close to the diaphragm 210, and the breathable diaphragm 700 is clamped.
- the second magnet portion 322 includes two pairs of magnets 3221 and two side magnets 3222, of which the two pairs of magnets 3221 are located on the left and right sides of the main magnet 3211,
- the steel 3222 is located on the front and rear sides of the main magnet 3211 respectively.
- the magnet unit 320 further includes an upper clamping plate 323, which is superimposed on the side of the two pairs of magnets 3221 and two magnets 3222 close to the diaphragm 210, and is connected to the basin frame 100, Thus, the positions of the two pairs of magnets 3221 and the two side magnets 3222 are fixed.
- the magnetic bowl 310 includes a bottom plate and two side plates connected to opposite ends of the bottom plate.
- the two side plates extend relative to the plane of the bottom plate toward the direction of the diaphragm 210 to form a groove.
- the main magnet 3211, the auxiliary magnet 3221, and The side magnets 3222 are all set in the groove.
- the diaphragm 210 includes a dome 211 in the middle position and a folding ring 212 fixedly connected to the dome 211, that is, the folding ring 212 is connected around the dome 211, and the folding ring 212 is connected to the dome 211.
- the basin frame 100 is connected to realize indirect positioning of the dome 211, and the dome 211 is in contact and fit with the end of the voice coil 220 protruding from the magnetic gap 324.
- the folding ring 212 bends and extends from the plane where the dome 211 is located toward the direction where the rear cavity 12 is located.
- the loudspeaker 10 further includes a centering support piece 900, which is a conductive member, is arranged on opposite sides of the voice coil 220 and is electrically connected to the voice coil 220, and the centering support piece 900 One end of 900 protrudes out of the basin frame 100 for electrical connection with an external power source, that is, the centering support piece 900 is electrically connected to the voice coil 220 and the external circuit.
- the centering support piece 900 plays a role of stabilizing vibration on the one hand, and on the other hand, it introduces electrical energy into the voice coil 220 to conduct electricity.
- the rear cover 400 is provided with a leakage hole 420, the leakage hole 420 is connected to the rear cavity 12 and the external space, and the leakage hole 420 is covered by a gas-permeable membrane 430. In this way, the pressure can be effectively relieved.
- the speaker 10 further includes a front cover 800
- the front cover 800 includes a shutter 820 and a front frame 810, wherein the front frame 810 is connected to the periphery of the shutter 820 and connected to the basin frame 100, and the shutter 820 is A sound hole 821 is opened, and the sound hole 821 is opposite to the dome 211.
- the shutter 820 is a metal piece, and there are four sound outlet holes 821.
- the audio device provided by the present application includes the above-mentioned speaker 10, and thus has all the beneficial effects of the above-mentioned speaker 10, which will not be repeated here.
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Abstract
Provided are a speaker and an audio apparatus. The speaker comprises a basket, a rear cover, a sound film, a sound-absorbing member, a vibration system and a magnetic circuit system. The vibration system comprises a diaphragm. The magnetic circuit system comprises a yoke. An inner cavity is bounded by the diaphragm, the yoke and the basket. The rear cover is positioned at one side of the yoke away from the diaphragm, and a rear cavity is bounded by the rear cover and the yoke. The rear cavity is in communication with the inner cavity. The rear cover is provided with a first through hole. The sound film is fixed to the rear cover and seals the first through hole. The sound-absorbing member is provided inside the rear cavity. Vibration of the diaphragm compresses air in the inner cavity and, consequently, influences flowing of air in the rear cavity. A change in the air in the rear cavity causes vibration of the sound film, such that the volume of the rear cavity is increased, thereby reducing F0, enhancing low frequency sensitivity of the speaker, and effectively reducing power consumption. Compared with the prior art, provision of a sound-absorbing material lengthens the path of propagation of a sound signal to the rear cavity, thereby optimizing low frequency sensitivity and reducing power consumption. The audio apparatus using the speaker possesses the advantages of the speaker.
Description
本申请涉及电声转换技术领域,尤其涉及一种扬声器及音频设备。 This application relates to the field of electro-acoustic conversion technology, and in particular to a speaker and audio equipment.
扬声器是一种常用的电子元器件,主要用于音频信号的播放,其工作原理是在磁铁构成的磁气回路里内置音圈,音圈流过的电流、产生上下方向的驱动力,使振膜振动由此使空气振动来出音。The speaker is a commonly used electronic component, mainly used for the playback of audio signals. Its working principle is that a voice coil is built in a magnetic circuit composed of magnets. The current flowing through the voice coil generates a driving force in the up and down directions to make vibrations. The membrane vibrates thereby causing the air to vibrate to produce sound.
随着科学技术的进步,具有音频功能的电子设备(以下简称音频设备)的普及率越来越高,尤其是随着4G、5G时代的到来,人们对音频设备扬声器的性能要求也越来越高。With the advancement of science and technology, the popularity of electronic devices with audio functions (hereinafter referred to as audio devices) is getting higher and higher, especially with the advent of the 4G and 5G era, people’s requirements for the performance of audio device speakers are also increasing. high.
然而,现有的扬声器依然存在的低频灵敏性低,功耗较高的问题,无法满足用户对扬声器性能要求和成本要求。However, the existing speakers still have the problems of low low frequency sensitivity and high power consumption, which cannot meet the user's requirements for speaker performance and cost.
因此,有必要提供一种新的扬声器以解决上述技术问题。Therefore, it is necessary to provide a new speaker to solve the above technical problems.
本申请的目的在于提供一种扬声器,以解决目前扬声器的低频灵敏低、功耗较高的技术问题。The purpose of this application is to provide a loudspeaker to solve the current technical problems of low frequency sensitivity and high power consumption of the loudspeaker.
本申请的技术方案如下:The technical solution of this application is as follows:
提供了一种扬声器,所述扬声器包括具有收容空间的盆架以及收容于所述收容空间内的振动***和磁路***,所述振动***包括固定于所述盆架且用于振动发声的振膜,所述磁路***包括固定于所述盆架的磁碗;A loudspeaker is provided, the loudspeaker includes a basin frame with a receiving space, and a vibration system and a magnetic circuit system housed in the receiving space, the vibration system including a vibration system fixed to the basin frame and used for vibrating and sounding. A membrane, the magnetic circuit system includes a magnetic bowl fixed to the basin frame;
所述磁碗、所述振膜及所述盆架围合形成内腔,所述扬声器还包括位于所述磁碗的远离所述振膜的一侧并与所述磁碗围合形成后腔的后盖,所述后腔连通于所述内腔;The magnetic bowl, the diaphragm, and the basin frame are enclosed to form an inner cavity, and the speaker further includes a rear cavity located on a side of the magnetic bowl away from the diaphragm and enclosed with the magnetic bowl The rear cover, the rear cavity is connected to the inner cavity;
所述后盖设有第一通孔,所述扬声器还包括固定于所述后盖并盖封所述第一通孔的音膜; The back cover is provided with a first through hole, and the speaker further includes a sound film fixed to the back cover and covering the first through hole;
所述扬声器还包括吸音件,所述吸音件设于所述后腔内。The loudspeaker further includes a sound absorbing member, and the sound absorbing member is arranged in the rear cavity.
作为一种改进,所述吸音件连接于所述音膜。As an improvement, the sound-absorbing member is connected to the sound membrane.
作为一种改进,所述磁路***还包括固定于所述磁碗的磁体单元、所述磁体单元设有沿振动方向贯穿其上的第二通孔,所述磁碗设有与所述第二通孔连通的第三通孔,所述第二通孔及所述第三通孔贯通所述内腔及所述后腔。As an improvement, the magnetic circuit system further includes a magnet unit fixed to the magnetic bowl, the magnet unit is provided with a second through hole penetrating therethrough in the direction of vibration, and the magnetic bowl is provided with the second through hole. A third through hole communicating with the two through holes, the second through hole and the third through hole penetrate the inner cavity and the rear cavity.
作为一种改进,所述扬声器还包括固定于所述磁路***的透气隔膜,所述透气隔膜盖封所述第二通孔及所述第三通孔中的至少一个。As an improvement, the speaker further includes a gas-permeable diaphragm fixed to the magnetic circuit system, and the gas-permeable diaphragm cover seals at least one of the second through hole and the third through hole.
作为一种改进,所述第一通孔、所述第二通孔及所述第三通孔沿所述振膜的振动方向相互正对设置。As an improvement, the first through hole, the second through hole, and the third through hole are arranged opposite to each other along the vibration direction of the diaphragm.
作为一种改进,所述振动***还包括驱动所述振膜振动发声的音圈,所述磁体单元包括开设有所述第二通孔的第一磁体部,及环绕所述第一磁体部设置的第二磁体部,所述第一磁体部与所述第二磁体部之间留有磁间隙,所述音圈***所述磁间隙内并环绕所述第一磁体部。As an improvement, the vibration system further includes a voice coil that drives the diaphragm to vibrate and produce sound, and the magnet unit includes a first magnet part provided with the second through hole, and is arranged around the first magnet part The second magnet part, a magnetic gap is left between the first magnet part and the second magnet part, and the voice coil is inserted into the magnetic gap and surrounds the first magnet part.
作为一种改进,所述振膜包括位于中间位置的球顶及与所述球顶固定连接的折环,所述折环与所述盆架连接。As an improvement, the vibrating membrane includes a dome in the middle position and a folding ring fixedly connected to the dome, and the folding ring is connected to the basin frame.
作为一种改进,所述音膜包括位于中间位置的平板部及连接于所述平板部的弯折部。As an improvement, the sound film includes a flat plate part located at an intermediate position and a bent part connected to the flat plate part.
作为一种改进,所述后盖上设有泄漏孔,所述泄漏孔连通所述后腔与外部空间。As an improvement, a leak hole is provided on the rear cover, and the leak hole communicates with the rear cavity and the external space.
作为一种改进,所述吸音件固定于所述平板部。As an improvement, the sound-absorbing member is fixed to the flat plate portion.
本申请还提供了一种音频设备,所述音频设备包括上述扬声器。The present application also provides an audio device, which includes the aforementioned speaker.
本申请提供的扬声器的有益效果在于:由于内腔与后腔连通,振膜振动使内腔中空气的压缩能够影响到后腔内空气的流动;后腔空气的变化会引起音膜的振动,从而加大后腔的体积,使F0,即最低共振周波数下降,进而提高扬声器的低频灵敏度,并有效减少功耗。由于吸音件的加入,使得传入后腔的声音信号的传播路径加长,声音被吸收率高,从而进一步提高了扬声器的低频灵敏度、减少了功耗。The beneficial effects of the speaker provided by the present application are: since the inner cavity is connected to the rear cavity, the vibration of the diaphragm causes the compression of the air in the inner cavity to affect the air flow in the rear cavity; the change of the air in the rear cavity will cause the vibration of the sound diaphragm. Thereby increasing the volume of the rear cavity, reducing F0, that is, the lowest resonant frequency, thereby improving the low-frequency sensitivity of the speaker and effectively reducing power consumption. Due to the addition of the sound-absorbing member, the propagation path of the sound signal entering the rear cavity is lengthened, and the sound absorption rate is high, thereby further improving the low-frequency sensitivity of the speaker and reducing the power consumption.
本申请提供的音频设备因采用了上述扬声器而具备了扬声器的全部有益效果,此处不再赘述。The audio device provided by the present application has all the beneficial effects of the speaker due to the use of the above-mentioned speaker, and will not be repeated here.
图1为本申请提供的扬声器的结构示意图一;FIG. 1 is a schematic diagram 1 of the structure of the loudspeaker provided by this application;
图2为本申请提供的扬声器的结构示意图二;Figure 2 is a second structural diagram of the loudspeaker provided by this application;
图3为本申请提供的扬声器的俯视结构示意图;FIG. 3 is a schematic diagram of the top view structure of the speaker provided by this application;
图4为图3中A-A向剖视结构示意图;Figure 4 is a schematic diagram of the A-A cross-sectional structure in Figure 3;
图5为本申请提供的扬声器的***结构示意图一;Figure 5 is the first schematic diagram of the explosive structure of the loudspeaker provided by this application;
图6为本申请提供的扬声器的***结构示意图二。Fig. 6 is the second schematic diagram of the exploded structure of the loudspeaker provided by this application.
需要说明的是,术语“长度”、“宽度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本申请和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本申请的限制。此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。It should be noted that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "Bottom", "Inner", "Outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying what is referred to The device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.
下面结合附图和实施方式对本申请作进一步说明。The application will be further described below in conjunction with the drawings and implementations.
请参阅图1至图6,本申请公开了一种扬声器10,包括盆架100、振动***200、磁路***300、后盖400、音膜500及吸音件600。其中,盆架100具有收容空间110,振动***200与磁路***300均收容于收容空间110内,磁路***300驱动振动***200振动发声。Please refer to FIG. 1 to FIG. 6. The present application discloses a speaker 10, which includes a basin frame 100, a vibration system 200, a magnetic circuit system 300, a back cover 400, a sound film 500 and a sound absorbing member 600. Wherein, the basin frame 100 has a containing space 110, the vibration system 200 and the magnetic circuit system 300 are both contained in the containing space 110, and the magnetic circuit system 300 drives the vibration system 200 to vibrate and produce sound.
具体地,振动***200包括振膜210及音圈220,振膜210固定于盆架100且用于振动发声,磁路***300包括磁体单元320及磁碗310,磁碗310固定于盆架100,在本实施例中,振膜210、磁碗310及盆架100围合形成内腔11,后盖400连接于盆架100,并位于磁碗310的远离振膜210的一侧,该后盖400与磁碗310围合形成有后腔12,内腔11与后腔12相互连通;另外,在后盖400上开设有第一通孔410,该第一通孔410连通后腔12与外部空间,音膜500连接于后盖400并盖封该第一通孔410,优选地,该音膜500为弹性件。Specifically, the vibration system 200 includes a diaphragm 210 and a voice coil 220. The diaphragm 210 is fixed on the basin frame 100 and used for vibrating and sounding. The magnetic circuit system 300 includes a magnet unit 320 and a magnetic bowl 310. The magnetic bowl 310 is fixed on the basin frame 100. In this embodiment, the diaphragm 210, the magnetic bowl 310 and the basin frame 100 are enclosed to form an inner cavity 11. The rear cover 400 is connected to the basin frame 100 and is located on the side of the magnetic bowl 310 away from the diaphragm 210. The cover 400 and the magnetic bowl 310 are enclosed to form a back cavity 12, and the inner cavity 11 and the back cavity 12 are in communication with each other; in addition, a first through hole 410 is opened on the back cover 400, and the first through hole 410 communicates with the back cavity 12 and In the external space, the sound film 500 is connected to the back cover 400 and covers the first through hole 410. Preferably, the sound film 500 is an elastic member.
另外,吸音件600设于后腔12中,具体地,在本实施例中,该吸音件600包括透气封装件及设于该透气封装件内的吸音材料,该吸音材料优选为吸音粉末。In addition, the sound absorbing member 600 is disposed in the rear cavity 12. Specifically, in this embodiment, the sound absorbing member 600 includes a gas-permeable packaging component and a sound-absorbing material arranged in the gas-permeable packaging component. The sound-absorbing material is preferably a sound-absorbing powder.
如此,由于内腔11与后腔12连通,振膜210振动使内腔11中空气的压缩能够带动后腔12内空气的流动,后腔12空气的变化会引起音膜500的振动,从而加大后腔12的体积,使FO(最低共振周波数)下降,进而提高扬声器10的低频灵敏度,并有效减少功耗。并且由于吸音材料的加入,使得传入后腔12的声音信号的传播路径加长,声音被吸收率高,从而进一步提高了扬声器10的低频灵敏度、减少了功耗。在本申请的其中一个实施例中,磁碗310周缘与盆架100之间留有间隙,内腔11可经磁碗310与盆架100之间的间隙与后腔12连通。In this way, since the inner cavity 11 and the back cavity 12 are connected, the vibration of the diaphragm 210 enables the compression of the air in the inner cavity 11 to drive the air flow in the back cavity 12, and the change of the air in the back cavity 12 will cause the sound diaphragm 500 to vibrate, thereby increasing The large volume of the rear cavity 12 reduces the FO (lowest resonant frequency), thereby improving the low frequency sensitivity of the speaker 10 and effectively reducing power consumption. In addition, due to the addition of sound-absorbing materials, the propagation path of the sound signal entering the rear cavity 12 is lengthened, and the sound absorption rate is high, thereby further improving the low-frequency sensitivity of the speaker 10 and reducing power consumption. In one of the embodiments of the present application, a gap is left between the periphery of the magnetic bowl 310 and the basin frame 100, and the inner cavity 11 can communicate with the rear cavity 12 through the gap between the magnetic bowl 310 and the basin frame 100.
优选地,该音膜500与后盖400胶合连接。Preferably, the sound film 500 and the rear cover 400 are glued and connected.
在一实施例中,音膜500为平板状。如此,加工和装配难度低,有助于节约成本。In one embodiment, the sound film 500 is in the shape of a flat plate. In this way, the difficulty of processing and assembly is low, which helps to save costs.
在另一实施例中,该吸音件600为由吸音材料制得的质量件。In another embodiment, the sound-absorbing member 600 is a mass member made of sound-absorbing material.
在一实施例中,该吸音件600连接于音膜500,因而能够随音膜500的振动而振动,也即吸音材料在后腔中亦处于能够运动的状态,从而能够进一步减小Fo,优化扬声器10的低频灵敏度,减少功耗。In one embodiment, the sound absorbing member 600 is connected to the sound membrane 500, and thus can vibrate with the vibration of the sound membrane 500, that is, the sound absorbing material is also in a movable state in the rear cavity, so that Fo can be further reduced and optimized The low frequency sensitivity of the speaker 10 reduces power consumption.
在一实施例中,该音膜500包括位于中间位置的平板部510及围绕平板部510的弯折部520,弯折部520连接于平板部510,并自成环状,且在本实施例中,该弯折部520自平板部510朝远离后腔12的方向凸出,如此,可以进一步加大后腔12的体积,优化低频灵敏度,降低功耗。In one embodiment, the sound film 500 includes a flat plate portion 510 at an intermediate position and a bent portion 520 surrounding the flat plate portion 510. The bent portion 520 is connected to the flat plate portion 510 and forms a ring shape by itself, and in this embodiment In this case, the bent portion 520 protrudes from the flat portion 510 in a direction away from the rear cavity 12, so that the volume of the rear cavity 12 can be further increased, low frequency sensitivity is optimized, and power consumption is reduced.
在一实施例中,上述吸音件600固定于该音膜500的平板部510。如此,便于稳定地将吸音件600安装在音膜500上。In an embodiment, the above-mentioned sound absorbing member 600 is fixed to the flat plate portion 510 of the sound film 500. In this way, it is convenient to install the sound absorbing member 600 on the sound film 500 stably.
在一实施例中,该磁体单元320固定于磁碗310,具体地,该磁体单元320叠设在磁碗310的靠近振膜210的一侧,其中,磁体单元320设有沿振动方向贯穿其上的第二通孔3213,磁碗310设有与第二通孔3213连通的第三通孔311,也即,第二通孔3213与第三通孔311贯通内腔11及后腔12,内腔11和后腔12通过该第二通孔3213和第三通孔311相互连通。In one embodiment, the magnet unit 320 is fixed to the magnetic bowl 310. Specifically, the magnet unit 320 is stacked on the side of the magnetic bowl 310 close to the diaphragm 210, wherein the magnet unit 320 is provided with a penetrating through it in the direction of vibration. On the upper second through hole 3213, the magnetic bowl 310 is provided with a third through hole 311 communicating with the second through hole 3213, that is, the second through hole 3213 and the third through hole 311 penetrate the inner cavity 11 and the rear cavity 12, The inner cavity 11 and the rear cavity 12 communicate with each other through the second through hole 3213 and the third through hole 311.
在一实施例中,在振膜210的振动方向上,上述第一通孔410、第二通孔3213以及第三通孔311相互正对。如此,内腔11中的气流变化能够更大程度上的影响到后腔12中的空气运动,并且更加直接地影响到音膜500的振动,使后腔12体积在振膜210振动发声过程中更加程度的扩大,从而进一步优化扬声器10的低频灵敏度,减少功耗。可以理解地,此时封装透气件600内的吸音材料也与该第二通孔3212及第三通孔311正对,使更多的声音信号能够迅速杯吸音材料吸收,从而有效改善扬声器的播音音质。In an embodiment, in the vibration direction of the diaphragm 210, the first through hole 410, the second through hole 3213, and the third through hole 311 are directly opposite to each other. In this way, the airflow change in the inner cavity 11 can affect the air movement in the back cavity 12 to a greater extent, and more directly affect the vibration of the sound diaphragm 500, so that the volume of the back cavity 12 is in the vibration and sound process of the diaphragm 210. A greater degree of expansion can further optimize the low-frequency sensitivity of the speaker 10 and reduce power consumption. Understandably, at this time, the sound-absorbing material in the encapsulating vent 600 is also directly opposite to the second through hole 3212 and the third through hole 311, so that more sound signals can be quickly absorbed by the sound-absorbing material, thereby effectively improving the sound of the speaker. Sound quality.
在一实施例中,该扬声器10还包括固定于磁路***300的透气隔膜700,该透气隔膜700连接于磁体单元320,并封堵第二通孔3213,如此,既能满足内腔11与后腔12连通的条件,又起到一定的阻隔作用,使内腔11与后腔12的气体连通速度维持在一定的范围内,确保扬声器10的发声质量。In one embodiment, the speaker 10 further includes a breathable diaphragm 700 fixed to the magnetic circuit system 300. The breathable diaphragm 700 is connected to the magnet unit 320 and blocks the second through hole 3213. In this way, the inner cavity 11 and The communication condition of the rear cavity 12 also plays a certain blocking effect, so that the gas communication speed between the inner cavity 11 and the rear cavity 12 is maintained within a certain range, and the sound quality of the speaker 10 is ensured.
在本申请的其他实施例中,透气隔膜700覆盖第二通孔3213及第三通孔311中的至少一个,也即,该透气隔膜700可以仅设置在磁碗310上覆盖第三通孔311,或者两个透气隔膜分别固定在主磁钢3211和磁碗310上以覆盖第二通孔3213及第三通孔311,此处不做唯一限定。In other embodiments of the present application, the breathable membrane 700 covers at least one of the second through hole 3213 and the third through hole 311, that is, the breathable membrane 700 may only be arranged on the magnetic bowl 310 to cover the third through hole 311 , Or two air-permeable diaphragms are respectively fixed on the main magnetic steel 3211 and the magnetic bowl 310 to cover the second through hole 3213 and the third through hole 311, which are not uniquely limited here.
在一实施例中,磁体单元320包括第一磁体部321和第二磁体部322,其中第二磁体部322环绕设置在第一磁体部321周围,且与该第一磁体部321之间留有磁间隙324,也即,该第一磁体部321与第二磁体部322之间留有的间隙满足二者之间存在磁感应的条件。另外,在本实施例中,该第一磁体部321与第二磁体部322中的至少一个为永磁体。In an embodiment, the magnet unit 320 includes a first magnet part 321 and a second magnet part 322, wherein the second magnet part 322 is arranged around the first magnet part 321, and is left between the first magnet part 321 and the first magnet part 321. The magnetic gap 324, that is, the gap left between the first magnet portion 321 and the second magnet portion 322 satisfies the condition that there is a magnetic induction between the two. In addition, in this embodiment, at least one of the first magnet part 321 and the second magnet part 322 is a permanent magnet.
上述音圈220的一端***磁间隙,另一端与上述振膜210接触配合,如此,音圈220通电后流过的电流置身于第一磁体部321与第二磁体部322之间的磁感线当中,电流变化即可产生相应的电磁感应力,从而驱动振膜210振动发声。One end of the voice coil 220 is inserted into the magnetic gap, and the other end is in contact with the diaphragm 210. In this way, the current flowing through the voice coil 220 is placed in the magnetic line of induction between the first magnet part 321 and the second magnet part 322. Among them, the current change can generate corresponding electromagnetic induction force, thereby driving the diaphragm 210 to vibrate and produce sound.
在一实施例中,该第一磁体部321包括主磁钢3211及主极芯3212,主极芯3212叠设于主磁钢3211的靠近振膜210的一侧,上述透气隔膜700被夹持于主极芯3212与主磁钢3211之间;第二磁体部322包括两副磁钢3221及两边磁钢3222,其中两副磁钢3221分别位于该主磁钢3211的左右两侧,两边磁钢3222分别位于主磁钢3211的前后两侧。In one embodiment, the first magnet portion 321 includes a main magnet 3211 and a main pole core 3212. The main pole core 3212 is stacked on the side of the main magnet 3211 close to the diaphragm 210, and the breathable diaphragm 700 is clamped. Between the main pole core 3212 and the main magnet 3211; the second magnet portion 322 includes two pairs of magnets 3221 and two side magnets 3222, of which the two pairs of magnets 3221 are located on the left and right sides of the main magnet 3211, The steel 3222 is located on the front and rear sides of the main magnet 3211 respectively.
另外,在一实施例中,磁体单元320还包括上夹板323,该上夹板323叠设于两副磁钢3221及两边磁钢3222的靠近振膜210的一侧,并且与盆架100连接,从而将两副磁钢3221及两边磁钢3222的位置固定。In addition, in an embodiment, the magnet unit 320 further includes an upper clamping plate 323, which is superimposed on the side of the two pairs of magnets 3221 and two magnets 3222 close to the diaphragm 210, and is connected to the basin frame 100, Thus, the positions of the two pairs of magnets 3221 and the two side magnets 3222 are fixed.
在一实施例中,磁碗310包括底板及连接在底板相对两端的两边板,两边板相对于底板平面朝向振膜210所在的方向延伸形成凹槽,上述主磁钢3211、副磁钢3221以及边磁钢3222均设于该凹槽内。从而使扬声器10内部的结构更加紧凑而稳定,及优化了空间占有量,也提高了结构的可靠性。In one embodiment, the magnetic bowl 310 includes a bottom plate and two side plates connected to opposite ends of the bottom plate. The two side plates extend relative to the plane of the bottom plate toward the direction of the diaphragm 210 to form a groove. The main magnet 3211, the auxiliary magnet 3221, and The side magnets 3222 are all set in the groove. As a result, the internal structure of the speaker 10 is more compact and stable, the space occupation is optimized, and the reliability of the structure is also improved.
在一实施例中,该振膜210包括位于中间位置的球顶211及与球顶211固定连接的折环212,也即,折环212连接于球顶211的周围,并且,折环212与盆架100连接,从而实现对球顶211的间接定位,球顶211与上述音圈220的伸出于磁间隙324的一端接触配合。另外,折环212自球顶211所在的平面朝向后腔12所在的方向弯折延伸。In one embodiment, the diaphragm 210 includes a dome 211 in the middle position and a folding ring 212 fixedly connected to the dome 211, that is, the folding ring 212 is connected around the dome 211, and the folding ring 212 is connected to the dome 211. The basin frame 100 is connected to realize indirect positioning of the dome 211, and the dome 211 is in contact and fit with the end of the voice coil 220 protruding from the magnetic gap 324. In addition, the folding ring 212 bends and extends from the plane where the dome 211 is located toward the direction where the rear cavity 12 is located.
在一实施例中,扬声器10还包括定心支片900,该定心支片900为导电件,分设于音圈220的相对两侧并与音圈220电性连接,并且该定心支片900的一端伸出于盆架100之外,用于与外部电源电性连接,也即,定心支片900电性连接该音圈220与外部电路。在本实施例中,该定心支片900一方面起到稳定振动的作用,另一方面为音圈220引入电能,起导电作用。In an embodiment, the loudspeaker 10 further includes a centering support piece 900, which is a conductive member, is arranged on opposite sides of the voice coil 220 and is electrically connected to the voice coil 220, and the centering support piece 900 One end of 900 protrudes out of the basin frame 100 for electrical connection with an external power source, that is, the centering support piece 900 is electrically connected to the voice coil 220 and the external circuit. In this embodiment, the centering support piece 900 plays a role of stabilizing vibration on the one hand, and on the other hand, it introduces electrical energy into the voice coil 220 to conduct electricity.
在一实施例中,后盖400上设有泄漏孔420,泄漏孔420连通后腔12与外部空间,该泄漏孔420由一透气膜430盖封。如此,可以起到有效的泄压作用。In one embodiment, the rear cover 400 is provided with a leakage hole 420, the leakage hole 420 is connected to the rear cavity 12 and the external space, and the leakage hole 420 is covered by a gas-permeable membrane 430. In this way, the pressure can be effectively relieved.
在一实施例中,扬声器10还包括前盖800,该前盖800包括遮板820及前框810,其中,前框810连接于遮板820的四周并与盆架100连接,遮板820上开设有出声孔821,该出声孔821正对于球顶211。如此,一方面对球顶211及折环212起到一定的保护作用,另一方面方便球顶211振动发出的声音顺利的传播出来。优选地,遮板820为金属件,出声孔821设有四个。In one embodiment, the speaker 10 further includes a front cover 800, the front cover 800 includes a shutter 820 and a front frame 810, wherein the front frame 810 is connected to the periphery of the shutter 820 and connected to the basin frame 100, and the shutter 820 is A sound hole 821 is opened, and the sound hole 821 is opposite to the dome 211. In this way, on the one hand, the dome 211 and the folding ring 212 can be protected to a certain extent, and on the other hand, the vibration of the dome 211 can be smoothly transmitted. Preferably, the shutter 820 is a metal piece, and there are four sound outlet holes 821.
本申请提供的音频设备,包括上述扬声器10,因而具备了上述扬声器10所具有的全部有益效果,此处不再赘述。The audio device provided by the present application includes the above-mentioned speaker 10, and thus has all the beneficial effects of the above-mentioned speaker 10, which will not be repeated here.
以上的仅是本申请的实施方式,在此应当指出,对于本领域的普通技术人员来说,在不脱离本申请创造构思的前提下,还可以做出改进,但这些均属于本申请的保护范围。。The above are only the implementation manners of this application. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the creative concept of this application, but these are all protected by this application. range. .
Claims (11)
- 一种扬声器,其特征在于:所述扬声器包括具有收容空间的盆架以及收容于所述收容空间内的振动***和磁路***,所述振动***包括固定于所述盆架且用于振动发声的振膜,所述磁路***包括固定于所述盆架的磁碗;A loudspeaker, characterized in that: the loudspeaker includes a basin frame with an accommodation space, and a vibration system and a magnetic circuit system accommodated in the accommodation space, and the vibration system includes a frame fixed to the basin frame and used for vibrating and sounding , The magnetic circuit system includes a magnetic bowl fixed to the basin frame;所述磁碗、所述振膜及所述盆架围合形成内腔,所述扬声器还包括位于所述磁碗的远离所述振膜的一侧并与所述磁碗围合形成后腔的后盖,所述后腔连通于所述内腔;The magnetic bowl, the diaphragm, and the basin frame are enclosed to form an inner cavity, and the speaker further includes a rear cavity located on a side of the magnetic bowl away from the diaphragm and enclosed with the magnetic bowl The rear cover, the rear cavity is connected to the inner cavity;所述后盖设有第一通孔,所述扬声器还包括固定于所述后盖并盖封所述第一通孔的音膜; The back cover is provided with a first through hole, and the speaker further includes a sound film fixed to the back cover and covering the first through hole;所述扬声器还包括吸音件,所述吸音件设于所述后腔内。The loudspeaker further includes a sound absorbing member, and the sound absorbing member is arranged in the rear cavity.
- 根据权利要求1所述的扬声器,其特征在于:所述吸音件连接于所述音膜。The loudspeaker according to claim 1, wherein the sound absorbing member is connected to the sound film.
- 根据权利要求1所述的扬声器,其特征在于:所述磁路***还包括固定于所述磁碗的磁体单元、所述磁体单元设有沿振动方向贯穿其上的第二通孔,所述磁碗设有与所述第二通孔连通的第三通孔,所述第二通孔及所述第三通孔贯通所述内腔及所述后腔。The speaker according to claim 1, wherein the magnetic circuit system further comprises a magnet unit fixed to the magnetic bowl, and the magnet unit is provided with a second through hole penetrating therethrough in the direction of vibration, the The magnetic bowl is provided with a third through hole communicating with the second through hole, and the second through hole and the third through hole penetrate the inner cavity and the rear cavity.
- 根据权利要求3所述的扬声器,其特征在于:所述扬声器还包括固定于所述磁路***的透气隔膜,所述透气隔膜盖封所述第二通孔及所述第三通孔中的至少一个。The speaker according to claim 3, wherein the speaker further comprises a breathable diaphragm fixed to the magnetic circuit system, and the breathable diaphragm cover seals the second through hole and the third through hole. at least one.
- 根据权利要求3所述的扬声器,其特征在于:所述第一通孔、所述第二通孔及所述第三通孔沿所述振膜的振动方向相互正对设置。4. The speaker according to claim 3, wherein the first through hole, the second through hole, and the third through hole are arranged opposite to each other along the vibration direction of the diaphragm.
- 根据权利要求3所述的扬声器,其特征在于:所述振动***还包括驱动所述振膜振动发声的音圈,所述磁体单元包括开设有所述第二通孔的第一磁体部,及环绕所述第一磁体部设置的第二磁体部,所述第一磁体部与所述第二磁体部之间留有磁间隙,所述音圈***所述磁间隙内并环绕所述第一磁体部。The speaker according to claim 3, wherein the vibration system further comprises a voice coil that drives the diaphragm to vibrate and produce sound, and the magnet unit comprises a first magnet part provided with the second through hole, and A second magnet part arranged around the first magnet part, a magnetic gap is left between the first magnet part and the second magnet part, and the voice coil is inserted into the magnetic gap and surrounds the first magnet part.磁部。 The magnet section.
- 根据权利要求6所述的扬声器,其特征在于:所述振膜包括位于中间位置的球顶及与所述球顶固定连接的折环,所述折环与所述盆架连接。The loudspeaker according to claim 6, wherein the diaphragm includes a dome in the middle position and a folding ring fixedly connected to the dome, and the folding ring is connected to the basin frame.
- 根据权利要求1至7任一项所述的扬声器,其特征在于:所述音膜包括位于中间位置的平板部及连接于所述平板部的弯折部。The loudspeaker according to any one of claims 1 to 7, wherein the sound film includes a flat plate part located at an intermediate position and a bent part connected to the flat plate part.
- 根据权利要求1至7任一项所述的扬声器,其特征在于:所述后盖上设有泄漏孔,所述泄漏孔连通所述后腔与外部空间。The loudspeaker according to any one of claims 1 to 7, wherein the rear cover is provided with a leakage hole, and the leakage hole communicates the rear cavity and the external space.
- 根据权利要求8所述的扬声器,其特征在于:所述吸音件固定于所述平板部。8. The speaker according to claim 8, wherein the sound absorbing member is fixed to the flat plate portion.
- 一种音频设备,其特征在于:所述音频设备包括权利要求1至10任一项所述扬声器。An audio device, characterized in that: the audio device comprises the speaker according to any one of claims 1 to 10.
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CN201922056237.2 | 2019-11-25 | ||
CN201922056237.2U CN211019219U (en) | 2019-11-25 | 2019-11-25 | Speaker and audio equipment |
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PCT/CN2019/122977 WO2021103071A1 (en) | 2019-11-25 | 2019-12-04 | Speaker and audio apparatus |
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WO (1) | WO2021103071A1 (en) |
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CN112235698A (en) * | 2020-10-27 | 2021-01-15 | 美特科技(苏州)有限公司 | Vibration plate, speaker module with vibration plate and electronic equipment |
Citations (5)
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---|---|---|---|---|
US4008374A (en) * | 1974-01-26 | 1977-02-15 | Tiefenbrun Ivor S | Loudspeaker systems |
US5497427A (en) * | 1992-09-25 | 1996-03-05 | Sony Corporation | Headphone |
CN104185102A (en) * | 2013-05-21 | 2014-12-03 | 宝德科技股份有限公司 | Tuning earphone |
CN208836403U (en) * | 2018-09-17 | 2019-05-07 | 瑞声科技(沭阳)有限公司 | Loudspeaker mould group |
CN209390330U (en) * | 2018-12-27 | 2019-09-13 | 瑞声科技(新加坡)有限公司 | A kind of loudspeaker |
-
2019
- 2019-11-25 CN CN201922056237.2U patent/CN211019219U/en active Active
- 2019-12-04 WO PCT/CN2019/122977 patent/WO2021103071A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4008374A (en) * | 1974-01-26 | 1977-02-15 | Tiefenbrun Ivor S | Loudspeaker systems |
US5497427A (en) * | 1992-09-25 | 1996-03-05 | Sony Corporation | Headphone |
CN104185102A (en) * | 2013-05-21 | 2014-12-03 | 宝德科技股份有限公司 | Tuning earphone |
CN208836403U (en) * | 2018-09-17 | 2019-05-07 | 瑞声科技(沭阳)有限公司 | Loudspeaker mould group |
CN209390330U (en) * | 2018-12-27 | 2019-09-13 | 瑞声科技(新加坡)有限公司 | A kind of loudspeaker |
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