WO2018196147A1 - Ensemble avertisseur sonore, dispositif électronique et procédé de montage d'ensemble avertisseur sonore dans un dispositif électronique - Google Patents

Ensemble avertisseur sonore, dispositif électronique et procédé de montage d'ensemble avertisseur sonore dans un dispositif électronique Download PDF

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Publication number
WO2018196147A1
WO2018196147A1 PCT/CN2017/089817 CN2017089817W WO2018196147A1 WO 2018196147 A1 WO2018196147 A1 WO 2018196147A1 CN 2017089817 W CN2017089817 W CN 2017089817W WO 2018196147 A1 WO2018196147 A1 WO 2018196147A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
mounting cavity
cavity
horn assembly
wall
Prior art date
Application number
PCT/CN2017/089817
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English (en)
Chinese (zh)
Inventor
曲林
王彦林
龙浩晖
杨雄
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201780024046.9A priority Critical patent/CN109076278A/zh
Publication of WO2018196147A1 publication Critical patent/WO2018196147A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • 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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • 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 present application relates to the field of electronic product technologies, and in particular, to a speaker assembly, an electronic device, and a method of installing a speaker assembly in an electronic device.
  • the speaker component is an important component of electronic devices such as smart phones, tablet computers, smart watches, etc.
  • the horn unit 1' is usually mounted in a mounting cavity 2 in the electronic device.
  • the horn unit 1' is a device unit, usually composed of a vibration system 11, a magnet 12, and a structural frame 13'.
  • the front and rear sound chambers, specifically, the vibration system 11 includes a diaphragm 111, and the magnet 12 is disposed at the bottom of the structural frame 13'.
  • the diaphragm 111 is fixedly coupled to the inner wall of the structural frame 13'.
  • the diaphragm 111 has the structure
  • the inner space of the skeleton 13' is divided into a front sound chamber and a rear sound chamber.
  • the working performance of the horn unit 1' mainly depends on the volume of the front sound chamber and the rear sound chamber. Generally, the larger the back sound chamber volume, the more the horn assembly works. it is good. Electronic devices often cannot be thinned or better due to the limitations of the speaker unit and the sound chamber.
  • the structural frame 13' is usually bonded to the mounting cavity 2 by the sealed foam A, and if the secondary point sealant B is to be applied Sealing it requires a large space between the structural frame 13' and the mounting cavity 2, further limiting the volume of the sound chamber and the thinning of the electronic device.
  • the structural skeleton 13' is bonded to the mounting cavity 2 by the sealed foam A, due to the airtightness requirement of the horn unit assembly, it is necessary to press it with a jig, and the force generated during the pressing process is required. Excessive assembly causes the horn unit 1' to be deformed to produce a murmur, and if the force is too small, the structural skeleton 13' and the mounting cavity 2 are not pressed together to cause problems such as poor airtightness and deviation of the audio index, for example, when designed.
  • the audio frequency response curve is shown in Figure 2.
  • the audio frequency response curve of the whole machine is often shown in Figure 3. In some high frequency bands, the audio loudness deviation will occur.
  • the present application provides a horn assembly, an electronic device, and a method for installing a horn assembly in an electronic device, which can maximize the design of the diaphragm, the magnet, and the front and rear sound chambers in a limited space, and enhance the audio loudness and audio effects, and at the same time,
  • the problems of the single-body deformation caused by the assembly and the assembly of the mounting body of the speaker unit in the prior art and the poor airtightness and the deviation of the audio index caused by the insufficient press-fit are avoided.
  • the present application provides a horn assembly that is coupled to a mounting cavity of an electronic device, the horn assembly including: a vibration system, a magnet for driving vibration of the vibration system, and a support frame for fixing the magnet, The vibration system and the magnet are installed in the installation cavity; wherein the vibration system comprises a diaphragm, and the diaphragm is fixedly connected to the inner wall of the installation cavity near the sound outlet, and the support frame and the installation cavity are away from the sound outlet The cavity wall is fixedly connected.
  • the structural skeleton portion does not involve the problem of the consistency of the structure between the structural skeleton portion for fixing the diaphragm and the inner wall of the mounting cavity, so that the structural skeleton of the speaker unit in the prior art can be prevented from being pressed against the mounting cavity.
  • the edge of the diaphragm is sealed to the inner wall of the mounting cavity adjacent to the sound outlet by a sealant.
  • the airtightness of the diaphragm and the mounting cavity can be improved, thereby ensuring the airtightness of the formed front sound chamber and improving the audio effect.
  • the support frame is detachably screwed to the cavity of the mounting cavity away from the sound outlet through a sealing ring and a screw; or the support frame is detachably sealed with the mounting
  • the cavity is sealed away from the cavity wall of the sound outlet. It can improve the airtightness of the connection between the support frame and the mounting cavity.
  • the detachable connection method is beneficial to the repair and reduce the repair cost.
  • the fixed connection between the support frame and the cavity of the mounting cavity away from the sounding port includes: the supporting frame is fixedly connected to the inner wall of the mounting cavity away from the sounding port; or The support frame is fixedly connected to the top wall of the mounting cavity away from the sound outlet.
  • the magnet is fixed on a side of the supporting frame facing the diaphragm, and the magnet has a magnetic gap
  • the vibration system further includes a voice coil connected to the diaphragm, The voice coil is disposed on a side of the diaphragm facing the support frame, and one end of the voice coil is fixedly connected to the diaphragm, and the other end extends into the magnetic gap of the magnet.
  • the voice coil further includes a lead for connecting to the adapter plate solder joint in the electronic device.
  • the horn assembly further includes a shield, the edge of the shield being for fixed connection with the cavity wall of the mounting cavity at the sound outlet.
  • the shield protects the front chamber from dust.
  • the present application provides an electronic device comprising: a housing, a mounting cavity disposed within the housing for mounting the horn assembly, and a horn assembly as described above mounted within the mounting cavity.
  • the diaphragm is directly connected to the inner wall of the mounting cavity, and the structural skeleton portion for fixing the diaphragm is eliminated, and on the one hand, it is not involved for fixing
  • the problem of poor air tightness and deviation of audio index on the other hand, it can free up more space to install the diaphragm, which can maximize the design of the diaphragm and magnet, obtain higher magnetic flux, and maximize the design before and after The volume of the sound cavity for greater audio loudness
  • the present application provides a method of installing a horn assembly in an electronic device, the horn assembly including a diaphragm, a magnet for driving the diaphragm vibration, and a support skeleton for fixing the magnet, the method comprising: A mounting cavity for mounting the horn assembly is formed inside the housing of the electronic device; the diaphragm is adjacent to the mounting cavity The inner wall of the sound outlet is fixedly connected; the support skeleton to which the magnet is fixed is fixedly connected to the cavity wall of the installation cavity away from the sound outlet.
  • the structural skeleton portion and the mounting for fixing the diaphragm are not involved.
  • the horn assembly further includes a voice coil connected to the diaphragm, one end of the voice coil is fixedly connected to one side of the diaphragm, and the other end is away from the diaphragm
  • the direction extending, the diaphragm is fixedly connected to the inner wall of the sounding opening of the sounding opening; specifically comprising: fixing a glue or a sealant between the edge of the diaphragm and the inner wall of the mounting cavity near the sound outlet, and The side of the diaphragm that is not connected to the voice coil is fixedly connected to the sounding port and the inner wall of the mounting cavity near the sound outlet.
  • the support frame is detachably screwed to the cavity wall forming the installation cavity by a sealing ring and a screw; or the support frame is formed by the detachable sealant and the mounting cavity.
  • the cavity wall is sealed. It can improve the airtightness of the connection between the support frame and the mounting cavity.
  • the detachable connection method is beneficial to the repair and reduce the repair cost.
  • the voice coil further includes a lead wire
  • the method further comprises: attaching the support frame to the cavity wall of the mounting cavity away from the sound outlet port, the method further comprising: Leads are routed along the edge of the mounting cavity and soldered to the adapter plate solder joints of the electronic device. It can further improve the airtightness of the rear sound chamber and reduce air leakage.
  • the support frame is further provided with a vent hole, and the method further includes: before the fixed connection of the support frame and the installation cavity away from the sound outlet Place a tuning film.
  • the present application provides a horn assembly, an electronic device, and a method of installing a horn assembly in an electronic device, which can maximize the design of the diaphragm, the magnet, and the front and rear sound chambers in a limited space, and enhance the audio loudness and audio effects, and at the same time,
  • the diaphragm is directly connected to the mounting cavity, and the structural skeleton portion for fixing the diaphragm is eliminated, so that the deformation and pressure of the single body caused by the structure of the horn unit and the mounting cavity of the horn can be avoided. Problems such as poor air tightness and deviation of audio indicators caused by the lack of position.
  • FIG. 1 is a schematic structural view of a speaker unit installed in an electronic device according to the prior art
  • FIG. 2 is a diagram of a designed audio frequency response curve provided by the prior art
  • FIG. 3 is a graph of audio frequency response based on FIG. 1 provided by the prior art
  • FIG. 4 is a schematic structural diagram of installing a horn assembly in an electronic device according to the present application.
  • FIG. 5 is a diagram of an audio frequency response graph based on FIG. 4 provided by the present application.
  • FIG. 6 is a schematic structural diagram of installing a horn assembly in another electronic device provided by the present application.
  • FIG. 7 is a schematic structural diagram of another apparatus for mounting a horn assembly in an electronic device according to the present application.
  • FIG. 8 is a schematic structural diagram of installing a horn assembly in still another electronic device provided by the present application.
  • FIG. 9 is a schematic flow chart of a method for installing a horn assembly in an electronic device according to the present application.
  • FIG. 10 is a schematic structural view of forming a mounting cavity inside a housing of an electronic device according to the present application.
  • FIG. 11 is a schematic structural view showing the fixed connection of the diaphragm and the mounting cavity to the cavity wall of the sound outlet according to FIG. 10 according to FIG. 10;
  • FIG. 12 is a schematic structural view showing a fixed connection of a support frame to which a magnet is fixed and a mounting cavity based on FIG. 11 according to FIG. 11;
  • FIG. 13 is a schematic structural view of the support frame and the cavity wall of the mounting cavity according to FIG. 12 provided by the present application;
  • the present application provides a horn assembly.
  • the horn assembly 1 is coupled to a mounting cavity 2 of an electronic device.
  • the horn assembly 1 includes a vibration system 11 and a magnet 12 for driving the vibration of the vibration system 11.
  • a support frame 13 for fixing the magnet 12, the vibration system 11 and the magnet 12 are mounted in the mounting cavity 2; wherein the vibration system 11 includes a diaphragm 111, and the diaphragm 111 is close to the mounting cavity 2
  • the inner wall of the sound port is fixedly connected, and the support frame 13 is fixedly connected to the wall of the mounting cavity 2 away from the sound outlet.
  • the mounting cavity 2 of the electronic device may be enclosed by the front shell structural member, the rear shell structural member or the middle frame structural member, and the specific position thereof is not limited.
  • the sound outlet is an opening formed by the structure skeleton 13' of the speaker unit 1' in the prior art, and a protective cover is usually disposed at the sound outlet to prevent dust from entering the speaker unit 1'.
  • the sounding port can be an opening at either end of the mounting cavity 2.
  • the horn unit 1' is usually placed directly in the mounting cavity 2, and through the foam rubber between the structural frame 13' of the horn unit 1' and the mounting cavity 2 A is bonded, and in the bonding process, it is usually required to bond the structural skeleton 13' of the horn monomer 1' with the inner wall of the mounting cavity 2 by pressing force, which may cause deformation of the horn monomer, thereby generating noise.
  • pressing force which may cause deformation of the horn monomer, thereby generating noise.
  • due to the limitation of the consistency of the structural skeleton 13' of the horn unit 1' and the mounting cavity 2 it is difficult to completely fit the structural skeleton 13' of the horn unit 1' and the inner wall of the mounting cavity 2, so that it cannot be avoided. If the press is not in place, problems such as poor air tightness and deviation of the audio index may occur.
  • the mounting cavity 2 and the supporting frame 13 together constitute a structural skeleton 13' of the prior art horn unit, and the diaphragm 111 is directly connected to the inner wall of the mounting cavity 2,
  • the structural skeleton portion for fixing the diaphragm 111 does not involve the problem of the matching consistency between the structural skeleton portion for fixing the diaphragm 111 and the inner wall of the mounting cavity 2, thereby being able to avoid the prior art.
  • the mounting cavity 2 is divided into a front sound chamber and a rear sound chamber by the diaphragm 111, wherein the side of the diaphragm 111 facing the sound outlet is the front sound chamber and the other side is the rear. Sound chamber.
  • the sealing property between the diaphragm 111 and the inner wall of the mounting cavity 2 directly affects the airtightness of the front sound chamber and the rear sound chamber.
  • the edge of the diaphragm 111 and the mounting cavity 2 are close to the sound outlet.
  • the inner wall is sealed and sealed by a sealant, so that the airtightness of the diaphragm 111 and the mounting cavity 2 can be improved, and the airtightness of the rear sound chamber can be ensured, thereby improving the audio effect.
  • the support frame 13 is detachably screwed away from the sound outlet through the sealing ring 3 and the screw 4 (see FIG. 6).
  • the support frame 13 is sealedly connected to the mounting cavity 2 by a detachable sealant 5 away from the sound outlet (as shown in FIG. 4).
  • the support frame 13 is detachably screwed away from the sound outlet port by the sealing ring 3 and the screw 4, which means that the sealing ring 3 is padded between the support frame 13 and the cavity wall of the mounting cavity 2, and then The support frame 13 and the cavity wall of the mounting cavity 2 are screwed by the screw 4, so that the sealing ring can improve the airtightness of the fit between the support frame 13 and the cavity wall of the mounting cavity 2.
  • the present application can seal the connection by means of detachable screwing or by means of the detachable sealant 5, in addition to realizing the airtightness of the rear sound chamber, the screw 4 can be installed when the vibration system or the magnet unexpectedly needs to be repaired.
  • the detachable sealant 5 is detached, and the vibration system 11 or the magnet 12 is replaced, and the repair cost can be reduced as compared with replacing the entire horn unit.
  • the fixed connection of the support frame 13 to the cavity wall of the mounting cavity 2 away from the sound outlet includes: the support frame 13 is fixedly connected to the inner wall of the installation cavity 2 away from the sound outlet; or the support frame 13 is fixedly connected to the top wall of the installation cavity 2 away from the sound outlet.
  • connecting the support frame 13 and the mounting cavity 2 away from the top wall of the sound outlet port can maximize the volume of the rear sound chamber, improve the audio effect, and, through the sealing ring 3 and the screw 4
  • the detachable screw connection and the sealed connection by the detachable sealant 5 are more convenient in the operation space.
  • the horn assembly 1 can be a moving coil horn, an electromagnetic horn, a piezoelectric horn, or a combination of a planar diaphragm with internal wiring and an electromagnet or permanent magnet. horn.
  • the magnet 12 is fixed on a side of the support frame 13 facing the diaphragm 111, and the magnet 12 has a magnetic gap, and the vibration system 11 further includes a connection with the diaphragm 111.
  • the voice coil 112 is disposed on a side of the diaphragm 111 facing the support frame 13. One end of the voice coil 112 is fixedly connected to the diaphragm 111, and the other end extends into the magnetic gap of the magnet 12.
  • the voice coil 112 further includes a lead 6 for solder joint connection with the adapter plate 7 in the electronic device. In this way, the audio coil 112 can be supplied with audio current through the adapter plate 7 in the electronic device.
  • the horn assembly further includes a shield 8 , the shield The edge of the 8 is for fixed connection with the wall of the chamber at which the mounting cavity 2 is located.
  • the shield 8 can protect the front sound chamber from dust.
  • the present application provides an electronic device comprising: a housing, a mounting cavity disposed within the housing for mounting the horn assembly, and a horn assembly as described above mounted within the mounting cavity.
  • the mounting cavity and the supporting frame together constitute a structural skeleton of the horn unit of the prior art, and directly the diaphragm and the mounting cavity
  • the inner wall connection eliminates the structural skeleton portion for fixing the diaphragm, and on the one hand, does not involve the problem of the matching consistency between the structural skeleton portion for fixing the diaphragm and the inner wall of the mounting cavity, thereby avoiding the prior art speaker single
  • the structural deformation of the body and the deformation of the monomer caused by the pressing of the mounting cavity and the poor airtightness caused by the insufficient press fit and the deviation of the audio index; on the other hand, the space can be freed to install the diaphragm.
  • the type of the electronic device is not limited.
  • the electronic device can be any one of a mobile phone, a tablet, a netbook, a smart watch, MP3, and MP4.
  • the present application provides a method of mounting a horn assembly in an electronic device, the horn assembly 1 including a diaphragm 111, a magnet 12 for driving the diaphragm 111, and a support frame 13 for fixing the magnet 12.
  • the method includes:
  • Step 1) Referring to Fig. 10, a mounting cavity 2 for mounting a horn assembly is formed inside the housing of the electronic device.
  • the mounting cavity 2 for mounting the horn assembly 1 can be reserved at a certain position when assembling the internal structural member of the electronic device.
  • Step 2) Referring to FIG. 11, the diaphragm 111 is fixedly connected to the inner wall of the installation chamber 2 near the sound outlet.
  • the horn assembly 1 further includes a voice coil 112 connected to the diaphragm 111, one end of the voice coil 112 is fixedly connected to one side of the diaphragm 111, and the other end extends away from the diaphragm 111, and therefore,
  • the diaphragm 111 is fixedly connected to the inner wall of the sounding opening of the mounting cavity 2, and specifically includes: fixing a glue or a sealant between the edge of the diaphragm 111 and the inner wall of the mounting cavity 2 near the sound outlet, and The side of the diaphragm 111 that is not connected to the voice coil 112 is fixedly connected to the sound outlet port and the inner wall of the mounting cavity 2 near the sound outlet.
  • a sealant B is placed between the edge of the diaphragm 111 and the inner wall of the mounting cavity 2 near the sound outlet, such that the edge of the diaphragm 111 and the mounting cavity 2 are adjacent to the inner wall of the sound outlet. Sealed connection. It is beneficial to improve the airtightness between the diaphragm 111 and the inner wall of the mounting cavity 2, improve the waterproof effect, and improve the design reliability of the horn.
  • the edge of the diaphragm 111 is connected to the inner side of the mounting cavity 2, the operation is difficult.
  • the inner side of the mounting cavity 2 is provided with a supporting step 9 near the sounding opening.
  • the diaphragm 111 is supported in the mounting cavity 2 through the supporting step 9, and a sealant B is placed between the edge of the diaphragm 111 and the inner wall of the mounting cavity 2 near the sound outlet, which is advantageous for the diaphragm
  • the position of the 111 is fixed for easy operation.
  • the side of the diaphragm 111 that is not connected to the voice coil 112 and the support step 9 may be included. Fixed point The glue A is fixedly connected to the support step 9 by the fixing glue A.
  • Step 3 Referring to FIG. 12, the support frame 13 to which the magnet 12 is fixed is fixedly connected to the cavity wall of the mounting cavity 2 away from the sound outlet.
  • the magnet 12 can be fixed to one side of the support frame 13, and then the side of the support frame 13 to which the magnet 12 is fixed is fixedly connected to the cavity 111 and the cavity wall of the mounting cavity 2 away from the sound outlet.
  • the end of the voice coil 112 extending in a direction away from the diaphragm 111 is projected into the magnetic gap of the magnet 12.
  • the support frame 13 passes through the sealing ring 3 and the screw 4 and the cavity wall forming the mounting cavity 2 Alternatively, the support frame 13 is sealingly connected to the cavity wall forming the mounting cavity 2 by a detachable sealant 5.
  • FIG. 13 is a schematic structural view after the support frame 13 is sealed and connected to the cavity wall of the mounting cavity 2
  • it can also be in the vibration system 11 or the magnet.
  • the voice coil further includes a lead wire 6.
  • the method further includes: referring to FIG. Leads 6 on 112 are taken along the edge of the mounting cavity 2 and soldered to the pads of the adapter plate 7 of the electronic device.
  • the voice coil 112 and lead the lead wire 6 of the voice coil 112 along the edge of the mounting cavity 2 the sound can be fixed when the support frame 13 is fixedly connected to the cavity of the mounting cavity 2 away from the sound outlet.
  • the gap between the lead wire 6 of the ring 112 and the mounting cavity 2 is sealed, which further improves the airtightness of the rear sound chamber and reduces air leakage.
  • the wire 6 of the voice coil 112 and the adapter plate 7 can also be protected.
  • Glue, protective glue can protect the lead 6 to prevent breakage of the voice coil leads during the assembly process.
  • the support frame 13 is further provided with a vent hole 10
  • the method further includes: before the fixed connection of the support frame 13 and the installation cavity 2 away from the cavity of the sound outlet port, the method further includes: Tweezing film 01 is attached at 10 places.
  • FIG. 8 is a schematic structural view of a protective cover 8 and a mounting cavity 2 fixedly connected to a cavity wall at the sound outlet. This step may occur before step 1) or after step 3). It can be between any two steps, and the time of occurrence of the step is not limited herein.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

La présente invention concerne le domaine technique des produits électroniques, et en particulier un ensemble avertisseur sonore (1), un dispositif électronique et un procédé de montage de l'ensemble avertisseur sonore (1) dans le dispositif électronique. Une membrane de vibration (111), un aimant (12) et une cavité sonore avant et arrière peuvent être conçus de façon optimale dans un espace limité, et un volume audio et une efficacité audio sont améliorés, tout en évitant les problèmes de l'état de la technique, qui consistent en la déformation d'une unité (1') provoquée par la stratification d'une ossature de structure d'une unité (1') d'avertisseur sonore et d'une cavité de montage (2), et en une imperméabilité à l'air et une déviation d'indice audio médiocres provoqués lorsque la stratification n'est pas en place. L'invention concerne un ensemble avertisseur sonore (1), l'ensemble avertisseur sonore (1) étant relié à la cavité de montage (2) du dispositif électronique, l'ensemble avertisseur sonore (1) comprenant : un système de vibration (11), l'aimant (12) et une ossature de support (13) destinée à fixer l'aimant (12), le système de vibration (11) et l'aimant (12) étant montés dans la cavité de montage (2), le système de vibration (11) comprenant la membrane de vibration (111), la membrane de vibration (111) étant reliée de manière fixe à une paroi interne de la cavité de montage (2), à proximité d'un orifice de sortie sonore, et l'ossature de support (13) est reliée de manière fixe à une paroi de cavité de la cavité de montage (2), loin de l'orifice de sortie sonore. La présente invention est utilisée pour la fabrication et la production d'un dispositif électronique.
PCT/CN2017/089817 2017-04-26 2017-06-23 Ensemble avertisseur sonore, dispositif électronique et procédé de montage d'ensemble avertisseur sonore dans un dispositif électronique WO2018196147A1 (fr)

Priority Applications (1)

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CN201780024046.9A CN109076278A (zh) 2017-04-26 2017-06-23 一种喇叭组件、电子设备以及在电子设备中安装喇叭组件的方法

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CN201710284030 2017-04-26
CN201710284030.3 2017-04-26

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CN202979238U (zh) * 2012-11-08 2013-06-05 谢玉龙 一种智能低频自动追踪共振耳机喇叭
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