WO2022166373A1 - Haut-parleur et dispositif électronique - Google Patents

Haut-parleur et dispositif électronique Download PDF

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Publication number
WO2022166373A1
WO2022166373A1 PCT/CN2021/136223 CN2021136223W WO2022166373A1 WO 2022166373 A1 WO2022166373 A1 WO 2022166373A1 CN 2021136223 W CN2021136223 W CN 2021136223W WO 2022166373 A1 WO2022166373 A1 WO 2022166373A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic circuit
voice coil
diaphragm
bracket
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Application number
PCT/CN2021/136223
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English (en)
Chinese (zh)
Inventor
朱跃光
王继宗
Original Assignee
歌尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Priority to CN202111586609.8A priority Critical patent/CN114286266B/zh
Priority to CN202111575847.9A priority patent/CN114257933B/zh
Priority to CN202111573608.XA priority patent/CN114257932B/zh
Publication of WO2022166373A1 publication Critical patent/WO2022166373A1/fr

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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

Definitions

  • the present invention relates to the technical field of loudspeakers, in particular to a loudspeaker and an electronic device using the loudspeaker.
  • Loudspeakers also known as horns, as an electro-acoustic transducer
  • Current loudspeakers can be divided into moving coil loudspeakers, moving iron loudspeakers and flat diaphragm loudspeakers in terms of working principle.
  • electronic devices such as earphones often use multiple drive units, that is, a tweeter and a woofer are used together.
  • the existing tweeter generally has the problem of poor high-pitched effect, which affects the sound quality of the electronic device and affects the user's use effect.
  • the main purpose of the present invention is to provide a loudspeaker and an electronic device, aiming to provide a loudspeaker that can effectively improve the sound quality and enhance the high-pitched sound effect.
  • the present invention provides a loudspeaker, the loudspeaker comprising:
  • a vibration system the vibration system is arranged in the installation space, the vibration system includes a vibration membrane and a voice coil arranged on the vibration membrane, the voice coil is wired along the surface of the vibration membrane, and the voice coil is The central axis of the diaphragm is perpendicular to the diaphragm, the voice coil has at least a first wire segment and a second wire segment oppositely arranged, and the current directions in the first wire segment and the second wire segment are opposite;
  • the bracket is a magnetic conductive material part, the bracket is connected with the diaphragm to suspend the vibration system in the installation space, and the bracket has a side wall facing the side of the voice coil , the side wall at least partially overlaps the projection of the voice coil in the horizontal direction;
  • a magnetic circuit system the magnetic circuit system is arranged in the installation space, the magnetic circuit system is opposite to the voice coil and is arranged at an interval, the magnetic circuit system includes a first magnetic circuit part, the first magnetic circuit The part includes at least three first magnetic parts, and the magnetic field lines of the magnetic circuit system at least partially vertically pass through the first wire segment and the second wire segment in the horizontal direction, and pass through the first wire segment and the The direction of the magnetic field lines of the second wire segment is opposite.
  • the first magnetic member is magnetized in a vertical direction, and the magnetization directions of two adjacent first magnetic members are opposite to each other.
  • the number of the first magnetic parts is three
  • the magnetic circuit system further includes a second magnetic circuit part, and the second magnetic circuit part and the first magnetic circuit part are respectively arranged in the magnetic circuit part.
  • the second magnetic circuit portion includes a second magnetic member, and the magnetization direction of the second magnetic member is opposite to the magnetization direction of the first magnetic member located in the middle position.
  • the magnetic circuit system further includes a second magnetic circuit portion, the second magnetic circuit portion and the first magnetic circuit portion are respectively disposed on opposite sides of the voice coil, the second magnetic circuit portion
  • the magnetic circuit part includes a second magnetic member, the number of the second magnetic member is the same as that of the first magnetic member, and the upper and lower corresponding magnetization of the first magnetic member and the second magnetic member The direction is opposite.
  • the first magnetic circuit portion includes a magnetic component group
  • the magnetic component group includes three first magnetic components arranged in the horizontal direction, the first magnetic component located in the middle position is magnetized downward in the vertical direction, and the first magnetic components located at both ends are respectively arranged in the horizontal direction. and magnetized toward the direction away from the first magnetic member in the middle; or, the first magnetic member at the middle position is magnetized upward in the vertical direction, and the first magnetic members at both ends are respectively along the horizontal direction and facing magnetization in the direction close to the first magnetic member in the middle;
  • the magnetic element group includes five first magnetic elements arranged in the horizontal direction, the first magnetic element at the middle position is magnetized downward along the vertical direction, and the two first magnetic elements at both ends are magnetized downward.
  • the magnetic element is upwardly magnetized in the vertical direction, and the two first magnetic elements arranged on both sides of the first magnetic element in the middle position are respectively charged in a horizontal direction and a direction away from the first magnetic element in the middle position.
  • the magnetic circuit system further includes a second magnetic circuit portion, the second magnetic circuit portion and the first magnetic circuit portion are respectively disposed on opposite sides of the voice coil, the second magnetic circuit portion
  • the magnetic circuit part includes a second magnetic member, and the magnetization direction of the second magnetic member is opposite to the magnetization direction of the first magnetic member located in the middle position.
  • the first magnetic circuit portion further includes a third magnetic element, the third magnetic element is disposed at both ends of the magnetic element group, and the extension direction of the third magnetic element is the same as that of the third magnetic element.
  • the extending direction of the first magnetic element is vertical.
  • the magnetic circuit system further includes a second magnetic circuit portion, the second magnetic circuit portion and the first magnetic circuit portion are respectively disposed on opposite sides of the voice coil, the second magnetic circuit portion
  • the magnetic circuit part includes a second magnetic member, the number of the second magnetic member is the same as that of the first magnetic member, and the upper and lower corresponding magnetization of the first magnetic member and the second magnetic member The directions are arranged symmetrically with respect to the plane where the voice coil is located.
  • a connecting member is provided between two adjacent first magnetic members to define an assembly gap between the two first magnetic members.
  • two adjacent first magnetic members are disposed in close contact with each other.
  • the bracket is formed as a hollow frame structure, the top of the bracket is connected to the inner wall of the housing, the magnetic circuit system further includes a second magnetic circuit part, the second magnetic circuit The part and the first magnetic circuit part are respectively arranged on opposite sides of the voice coil, the second magnetic circuit part is located in the bracket, the bottom of the bracket is provided with an escape opening, and the diaphragm and the The bottoms of the brackets are connected and the voice coil is located in the escape opening.
  • the bracket is provided with a horizontal connecting portion extending horizontally, the side of the horizontal connecting portion facing the voice coil is the side wall, and the bottom of the horizontal connecting portion is connected to the first magnetic Road section stops.
  • the diaphragm is a single-layer metal material
  • the diaphragm is formed in a composite layer structure, and at least the surface connected to the voice coil is made of metal material.
  • the voice coil is formed in a square shape.
  • the present invention also provides an electronic device including the above-mentioned speaker.
  • the vibration system is suspended in the installation space of the housing by using the bracket of the magnetic conductive material, so that the magnetic circuit system installed in the installation space and the voice coil of the vibration system are arranged opposite and spaced apart, thereby utilizing At least three first magnetic parts of the first magnetic circuit part in the magnetic circuit system generate a strong magnetic field, so that the diaphragm and the voice coil are in a strong magnetic field strength, and the magnetic field lines at the diaphragm are evenly distributed and the magnetic field strength is
  • the change of the magnetic field has good linearity, which can effectively improve the sound quality of the audio output by the speaker and improve the high-pitched effect; at the same time, the use of the bracket of the magnetic conductive material to achieve the magnetic concentration effect, so that the magnetic field lines of the magnetic circuit system at least partially vertically pass through the horizontal direction.
  • the first wire segment and the second wire segment of the voice coil make the magnetic force lines passing through the first wire segment and the second wire segment opposite in direction, thereby effectively improving the sound quality
  • FIG. 1 is an exploded schematic diagram of a speaker in an embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional view of a speaker according to an embodiment of the present invention.
  • FIG. 3 is a schematic cross-sectional view of the connection between the bracket and the vibration system in an embodiment of the present invention
  • FIG. 4 is a schematic cross-sectional view of the connection between the bracket and the vibration system in another embodiment of the present invention.
  • FIG. 5 is a schematic cross-sectional view of a voice coil and a magnetic circuit system in the first embodiment of the present invention
  • FIG. 6 is a schematic cross-sectional view of a voice coil and a magnetic circuit system in a second embodiment of the present invention.
  • FIG. 7 is a schematic cross-sectional view of a voice coil and a magnetic circuit system in a third embodiment of the present invention.
  • FIG. 8 is a schematic cross-sectional view of a voice coil and a magnetic circuit system in a fourth embodiment of the present invention.
  • FIG. 9 is a schematic cross-sectional view of a voice coil and a magnetic circuit system in a fifth embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a magnetic circuit system in an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a first magnetic circuit portion in an embodiment of the present invention.
  • FIG. 12 is a schematic cross-sectional view of a first magnetic circuit portion in another embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a voice coil in an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a magnetic field simulation of a magnetic circuit system in an embodiment of the present invention.
  • Vibration system 411 Magnetic set twenty one Diaphragm 412 first magnetic element twenty two voice coil 413 third magnetic element 221 first wire segment 414 connector 222 second wire segment 415 Assembly clearance twenty three Reinforcing Department 42 second magnetic circuit part 3 bracket 421 second magnetic element
  • Loudspeakers also known as horns, as an electro-acoustic transducer
  • Current loudspeakers can be divided into moving coil loudspeakers, moving iron loudspeakers and flat diaphragm loudspeakers in terms of working principles.
  • the moving coil loudspeaker has a simple structure, mature technology and good performance, but the disadvantage is that the vibration quality is large and the transient characteristics are not good. Swing vibration and split vibration at different frequencies lead to severe peaks and valleys in the high-frequency response, and the nonlinear problem of moving coil loudspeakers leads to high product distortion and serious deterioration of acoustic performance.
  • the advantages of moving iron speakers are good transient response and high efficiency, but the disadvantages are large distortion and narrow frequency response, and are often used in hearing aids.
  • Planar diaphragm speakers using planar diaphragm technology integrate a plane voice coil on the surface of the diaphragm and place the diaphragm in the magnetic field environment generated by the magnetic components.
  • the coil is forced to drive the diaphragm to move back and forth, resulting in the change of air density and sound.
  • the magnetic field generated by the magnetic components of the flat diaphragm speaker is unreasonable, resulting in weak magnetic field strength at the coil, insufficient sensitivity of the flat diaphragm speaker, or uneven distribution of magnetic field lines and poor linearity; or the magnetic component
  • There is no air circulation channel inside which causes the magnetic assembly to hinder the airflow greatly. This leads to problems such as serious distortion of the audio output from the flat-diaphragm speaker, and poor sound quality and treble effects.
  • the present invention provides a speaker 100 . It can be understood that the speaker 100 can be applied to electronic devices such as speakers, earphones, and mobile phones, which is not limited herein.
  • the speaker 100 includes a housing 1, a vibration system 2, a bracket 3 and a magnetic circuit system 4, wherein the housing 1 defines an installation space 11;
  • the vibration system 2 is set in the installation space 11 , and the vibration system 2 includes a vibration membrane 21 and a voice coil 22 arranged on the vibration membrane 21 .
  • the voice coil 22 is wired along the surface of the vibration membrane 21 and the central axis of the voice coil 22 is perpendicular to the vibration membrane 21 .
  • the voice coil 22 at least has a first wire segment 221 and a second wire segment 222 arranged oppositely, and the current directions in the first wire segment 221 and the second wire segment 222 are opposite;
  • the bracket 3 is a magnetic conductive material, and the bracket 3 and the vibration The membrane 21 is connected to suspend the vibration system 2 in the installation space 11, the bracket 3 has a side wall 33 facing the side of the voice coil, the side wall 33 and the projection of the voice coil 22 in the horizontal direction at least partially overlap;
  • the housing 1 is used to install, fix, support and protect the vibration system 2, the bracket 3 and the magnetic circuit system 4 and other components, that is, the housing 1 provides the vibration system 2, the bracket 3 and the magnetic circuit system 4 and other components. Install the base. It can be understood that the housing 1 may be a structure such as a mounting shell, an outer shell, or a box body having a mounting space 11 , which is not limited herein.
  • the housing 1 may be configured in a circular or square structure, etc., which is not limited herein.
  • the casing 1 includes an upper casing 12 and a lower casing 13 matched with the upper casing 12 , so that the upper casing 12 and the lower casing 13 enclose an installation space 11 .
  • the lower shell 13 can be configured in a U-shaped structure, which can include a flat bottom wall and a side wall provided on the bottom wall.
  • the upper shell 12 can also be arranged in a U-shaped structure, which can include a flat top wall and side walls respectively of the top wall. In this way, the upper case 12 and the lower case 13 are cross-fastened together to define an installation space 11 for installing the vibration system 2 , the bracket 3 and the magnetic circuit system 4 and other components.
  • the vibration system 2 includes a diaphragm 21 and a voice coil 22 .
  • the voice coil 22 is disposed on the diaphragm 21 , and the diaphragm 21 can be selected as a flat diaphragm 21 structure, so that the voice coil 22 is disposed on the flat surface of the diaphragm 21 .
  • the voice coil 22 may be a flexible circuit board attached to the diaphragm 21 .
  • the voice coil 22 may also be composed of a plurality of coils provided on the same surface of the diaphragm 21 , which is not limited here.
  • the diaphragm 21 can be made of metal material or non-metal material, such as paper, PET (polyester film), PEEK (polyetheretherketone), PAR (polyarylate), PI (polyimide) , PEN, woven glass fiber or aluminum, etc., which are not limited here. Further, the diaphragm 21 may be a metal plane diaphragm.
  • the support 3 is set as a magnetic conductive material, so that the vibration system 2 is suspended in the installation space 11 by the support 3.
  • the support 3 is used to provide stability for the installation of the vibration system 2.
  • the side wall 33 of the bracket 3 facing the voice coil side and the projection of the outer wall of the voice coil 22 in the horizontal direction are at least partially overlapped, so that the bracket 3 of the magnetic conductive material is used.
  • the magnetization effect is achieved, so that the magnetic field lines generated by the magnetic circuit system 4 vertically pass through the first wire segment 221 and the second wire segment 222 of the voice coil 22 in the horizontal direction, and pass through the first wire segment 221 and the second wire segment 222
  • the direction of the magnetic field lines is opposite, so that the magnetic field lines at the diaphragm 21 are evenly distributed and the magnetic field changes in the vibration direction of the diaphragm 21 have good linearity, which can effectively improve the sound quality of the audio output by the speaker 100, and enhance the high-pitched effect.
  • the distortion of the audio output by the speaker 100 can be alleviated to a certain extent.
  • the at least three first magnetic members 412 of the first magnetic circuit portion 41 in the magnetic circuit system 4 form a strong magnetic field, so that the diaphragm 21 and the voice coil 22 of the vibration system 2 are in a strong magnetic field strength
  • the magnetic field lines at the diaphragm 21 are evenly distributed, and the change of the magnetic field strength has good linearity, which can effectively improve the sound quality of the audio output by the speaker 100 and improve the high-pitched effect.
  • the first magnetic circuit portion 41 includes a plurality of first magnetic elements 412, and the plurality of first magnetic elements 412 may also form a Halbach magnetic element array.
  • the plurality of first magnetic members 412 of the first magnetic circuit portion 41 may also form a magnetic field with a higher magnetic field strength, which is not limited herein.
  • the magnetic circuit system 4 by arranging the magnetic circuit system 4 in the installation space 11 and being opposite to and spaced apart from the voice coil 22, by adjusting the first magnetic member 412 in the first magnetic circuit part 41
  • the magnetization direction of the first magnetic circuit part 41 makes the first magnetic element 412 in the first magnetic circuit part 41 form a Halbach magnetic element array, that is, the magnetic element array of the first magnetic element 412 and the arrangement law satisfy the Halbach array.
  • the Halbeck magnetic element array can generate a strong magnetic field, and the magnetic field generated by the Halbeck magnetic element array drives the diaphragm 21 to vibrate and emit sound, so that the diaphragm 21 has a strong magnetic field, which is beneficial to improve the control of the diaphragm. 21 vibration sensitivity; and, the Halbach magnetic element array allows the magnetic field lines at the diaphragm 21 to be uniformly distributed and the magnetic field change in the vibration direction of the diaphragm 21 has good linearity, which can effectively improve the sound quality of the audio output by the speaker 100 , to improve the treble effect, and to a certain extent, alleviate the distortion of the audio output by the speaker 100 .
  • the vibration of the diaphragm 21 is that the edge of the diaphragm 21 is fixed, and the surface of the diaphragm 21 vibrates back and forth in a direction perpendicular to the surface of the diaphragm 21 .
  • the magnetic circuit system 4 is disposed relative to the diaphragm 21 and the voice coil 22 , that is, the diaphragm 21 is located in the magnetic field formed by the plurality of first magnetic members 412 , and is used to generate an effect when a current is passed through the voice coil 22 .
  • the magnetic force of the voice coil 22 drives the diaphragm 21 to vibrate back and forth in the direction of the magnetic force to produce sound. It can be understood that, after current is passed through the voice coil 22, the currents in the first wire segment 221 and the second wire segment 222 disposed opposite to each other in the voice coil 22 flow in opposite directions.
  • the first magnetic member 412 of the magnetic circuit system 4 may be an electromagnet or a permanent magnet, but its magnetic properties remain unchanged.
  • any adjacent first magnetic members 412 can be optionally arranged at intervals, in close contact, or connected by connecting members, etc., which is not limited herein.
  • the speaker 100 of the present invention suspends the vibration system 2 in the installation space 11 of the housing 1 by using the bracket 3 of the magnetic conductive material, so that the magnetic circuit system 4 installed in the installation space 11 and the voice coil 22 of the vibration system 2 They are arranged opposite and spaced apart, so that at least three first magnetic elements 412 of the magnetic circuit system 4 are used to form a magnetic element array, and a magnetic field with a relatively strong magnetic field strength is generated, so that the diaphragm 21 and the voice coil 22 are in a relatively strong magnetic field strength.
  • the magnetization effect is achieved by using the bracket 3 of the magnetic conductive material, so that the magnetic field lines of the magnetic circuit system 4 at least partially vertically pass through the first wire segment 221 of the voice coil 22 and the The second wire segment 222 makes the magnetic force lines passing through the first wire segment 221 and the second wire segment 222 in opposite directions, thereby effectively improving the sound quality and treble effect of the speaker 100 .
  • the first magnetic members 412 are magnetized in a vertical direction, and the magnetization directions of two adjacent first magnetic members 412 are opposite to each other.
  • the at least three first magnetic members 412 of the first magnetic circuit portion 41 in the magnetic circuit system 4 can also form a Halbach magnetic member array, so that according to the magnetic field law of the Halbach array, the surface of the diaphragm 21 corresponds to the first magnetic member 412 .
  • the magnetic field of a part of the magnetic element 412 is better than the magnetic field of the part not corresponding to the first magnetic element 412 , including the magnetic field strength, the linearity of the magnetic field strength changing with the position, and the distribution uniformity of the magnetic field lines.
  • the voice coil 22 is optionally disposed in the area defined by the orthographic projection of the first magnetic member 412 on the surface of the diaphragm 21 .
  • the orthographic projection of the voice coil 22 on the surface of the diaphragm 21 is located in the orthographic projection of the first magnetic member 412 on the surface of the diaphragm 21, so that the voice coil 22 is in a relatively reasonable magnetic field, so as to alleviate the audio output from the speaker 100. distortion, and improve the sound quality of the audio output by the speaker 100.
  • the direction of the magnetic field lines in the two adjacent first magnetic members 412 is opposite, the direction of the magnetic force on the voice coil 22 corresponding to the two adjacent first magnetic members 412 is the same, so as to facilitate the driving of the diaphragm 21 to vibrate Sound, thereby increasing the proportion of a reasonable magnetic field in the magnetic field at the diaphragm 21, that is, increasing the proportion of the surface of the diaphragm 21 corresponding to the first magnetic member 412, which is conducive to improving the rationality of the magnetic field where the diaphragm 21 is located, so as to improve the The distortion of the audio output by the speaker 100 is alleviated, and the sound quality of the audio output by the speaker 100 is improved.
  • the distances from the surfaces of the adjacent two adjacent first magnetic members 412 adjacent to the diaphragm 21 to the diaphragm 21 are the same, so as to further improve the rationality of the magnetic field where the diaphragm 21 is located, and further alleviate the audio frequency output by the speaker 100. In case of distortion, the sound quality of the audio output by the speaker 100 is improved.
  • the magnetization directions of two adjacent first magnetic members 412 among the at least three first magnetic members 412 of the first magnetic circuit portion 41 are opposite, that is, in the adjacent two first magnetic members 412 When the N pole of one first magnetic member 412 is on the top and the S pole is on the bottom, the N pole of the other first magnetic member 412 is on the bottom and the S pole is on the top, and vice versa.
  • two adjacent first magnetic members 412 are spaced apart, so that a horizontal magnetic field can be formed just above the space.
  • a laterally placed first magnetic member 412 may also be disposed between two adjacent first magnetic members 412 , that is, the first magnetic member 412 located in the adjacent two first magnetic members 412
  • the N pole of the member 412 is opposite to and spaced from a first magnetic member 412
  • the S pole is opposite to and spaced from another first magnetic member 412 , which is not limited herein.
  • the two first magnetic members 412 on both sides of the first magnetic member 412 in the middle are arranged in a lateral direction, for example, when the N pole of the first magnetic member 412 in the middle is lower and the S pole is upper, the first magnetic member 412 in the middle
  • the S poles of the two first magnetic pieces 412 on both sides of the magnetic piece 412 are located at one end of the first magnetic piece 412 close to the middle, and the N poles are located at the end of the first magnetic piece 412 away from the middle, and vice versa. limited.
  • the magnetic circuit system 4 further includes a second magnetic circuit portion 42 .
  • the portion 42 and the first magnetic circuit portion 41 are respectively disposed on opposite sides of the voice coil 22.
  • the second magnetic circuit portion 42 includes a second magnetic member 421. The magnetization directions of the magnetic members 412 are opposite.
  • first magnetic circuit portion 41 and the second magnetic circuit portion 42 are arranged on opposite sides of the vibration system 2 respectively, that is to say, magnetic fields with strong magnetic field strength are formed on the opposite sides of the vibrating membrane 21, so that the The strength of the magnetic field where the diaphragm 21 is located is further enhanced, thereby further improving the sensitivity of controlling the vibration of the diaphragm 21 and improving the sound quality of the audio output by the speaker 100 .
  • the magnetic field of the magnetic field where the diaphragm 21 is located is made.
  • the distribution of the sense lines is more uniform, and the change of the magnetic field intensity in the vibration direction of the diaphragm 21 has better linearity, thereby optimizing the performance of the speaker 100 and increasing the BL of the speaker 100 by 37.64%.
  • the magnetic circuit system 4 further includes a second magnetic circuit portion 42 , and the second magnetic circuit portion 42 and the first magnetic circuit portion 41 are respectively provided on two opposite sides of the voice coil 22 .
  • the second magnetic circuit portion 42 includes second magnetic members 421, the number of the second magnetic members 421 is the same as the number of the first magnetic members 412, and the upper and lower corresponding first magnetic members 412 and second magnetic members 421 The magnetization direction is opposite.
  • the second magnetic circuit portion 42 and the first magnetic circuit portion 41 are respectively arranged on opposite sides of the vibration system 2, and the first magnetic member 412 and the first magnetic circuit portion 41 in the upper and lower corresponding first magnetic circuit portions 41 are arranged
  • the magnetization directions of the second magnetic elements 421 in the two magnetic circuit parts 42 are opposite, that is, the magnetic fields generated by the magnetic element arrays on both sides of the diaphragm 21 are symmetrical, so that the magnetic field lines of the magnetic field where the diaphragm 21 is located are distributed. It is more uniform, and the change of the magnetic field strength in the vibration direction of the diaphragm 21 has better linearity.
  • first magnetic circuit portion 41 and the second magnetic circuit portion 42 located on opposite sides of the vibration system 2 may respectively form an array of Halbach magnetic elements.
  • first magnetic circuit portion 41 and the second magnetic circuit portion 42 located on opposite sides of the vibration system 2 may also respectively form other magnetic element arrays, which are not limited herein.
  • the second magnetic circuit portion 42 and the first magnetic circuit portion 41 are located on both sides of the diaphragm 21 respectively.
  • the Halbach magnetic element array formed on the surface can help to alleviate the second harmonic distortion and the third harmonic distortion of the diaphragm 21 , further alleviate the distortion of the audio output by the speaker 100 , and improve the sound quality of the audio output by the speaker 100 .
  • the size of the second magnetic circuit portion 42 by appropriately adjusting the size of the second magnetic circuit portion 42 so that the size of the second magnetic circuit portion 42 is between the size of the first magnetic circuit portion 41 , the effective magnetic field is fully utilized, and the output of the speaker 100 is further increased.
  • BL value is adjusting the size of the second magnetic circuit portion 42 so that the size of the second magnetic circuit portion 42 is between the size of the first magnetic circuit portion 41 .
  • the BL value of the speaker 100 is increased by 37.12% by changing the different magnetization directions of the second magnetic circuit portion 42 and the first magnetic circuit portion 41 on the opposite sides of the vibration system 2 to optimize.
  • the first magnetic circuit part 41 includes a magnetic element group 411 , and the magnetic element group 411 includes three first magnetic elements 412 arranged in the horizontal direction, and the first magnetic element in the middle The pieces 412 are magnetized downward in a vertical direction, and the first magnetic pieces 412 at both ends are respectively magnetized in a horizontal direction and a direction away from the middle first magnetic piece 412 .
  • the magnetic element group 411 includes three first magnetic elements 412 arranged in the horizontal direction, and the first magnetic element in the middle
  • the pieces 412 are magnetized downward in a vertical direction, and the first magnetic pieces 412 at both ends are respectively magnetized in a horizontal direction and a direction away from the middle first magnetic piece 412 .
  • the first magnetic circuit part 41 includes a magnetic element group 411 , and the magnetic element group 411 includes three first magnetic elements 412 arranged in the horizontal direction, and the first magnetic element in the middle
  • the magnetic pieces 412 are magnetized upward along the vertical direction, and the first magnetic pieces 412 located at both ends are respectively magnetized along the horizontal direction and toward the direction close to the middle first magnetic piece 412 .
  • the magnetic element group 411 includes three first magnetic elements 412 , for example, the middle first magnetic element 412 and the adjacent first magnetic elements 412 on both sides of the middle first magnetic element 412 .
  • the magnetization directions of the three first magnetic elements 412 in 411 form a Halbach magnetic element array.
  • the first magnetic members 412 at both ends are respectively horizontally and facing magnetized in a direction away from the middle first magnetic member 412, thereby generating a magnetic field consisting of alternating polarity loops emanating from the middle first magnetic member 412, the first magnetic field polarized in the + and -X directions
  • the path over the magnets 412 curves and eventually returns to the first magnets 412 on the outermost portion of the array.
  • the magnetic element group 411 includes five first magnetic elements 412 arranged in the horizontal direction, and the first magnetic element 412 in the middle position is magnetized downward in the vertical direction, The two first magnetic pieces 412 at both ends are magnetized upward along the vertical direction, and the two first magnetic pieces 412 located on both sides of the first magnetic piece 412 at the middle position are respectively horizontally and facing away from the first magnetic piece at the middle position. magnetized in the direction of the element 412 .
  • the magnetic element group 411 includes three, five or more first magnetic elements 412 , by adjusting the magnetization directions of the three, five or more first magnetic elements 412 in the magnetic element group 411 , forming the first magnetic circuit portion 41 of the Halbeck array.
  • the magnetization directions of the five first magnetic members 412 such that the first magnetic member 412 at the middle position is magnetized downward in the vertical direction, and the two first magnetic members 412 at both ends are magnetized upward along the vertical direction
  • the two or more first magnetic members 412 disposed on both sides of the first magnetic member 412 in the middle position are respectively magnetized in a horizontal direction and away from the first magnetic member 412 in the middle position, so as to generate alternating polarities.
  • the magnetic circuit system 4 further includes a second magnetic circuit portion 42 , the second magnetic circuit portion 42 and the first magnetic circuit portion 42 .
  • the magnetic circuit parts 41 are respectively disposed on opposite sides of the voice coil 22.
  • the second magnetic circuit part 42 includes a second magnetic member 421. The direction is opposite.
  • the magnetic fields generated by the magnetic element arrays on both sides of the diaphragm 21 are symmetrical to further The strength of the magnetic field where the diaphragm 21 is located is enhanced, thereby further improving the sensitivity of controlling the vibration of the diaphragm 21 and improving the sound quality of the audio output by the speaker 100 .
  • the magnetic field of the magnetic field where the diaphragm 21 is located is made.
  • the distribution of the sense lines is more uniform, and the change of the magnetic field intensity in the vibration direction of the diaphragm 21 has better linearity, thereby optimizing the performance of the speaker 100 and increasing the BL of the speaker 100 by 37.64%.
  • the second magnetic circuit portion 42 and the A magnetic circuit portion 41 forms Halbach magnetic element arrays on both sides of the diaphragm 21 respectively, which is not limited herein.
  • FIG. 14 shows the simulation result of the magnetic field distribution in which the first magnetic circuit portion 41 and the second magnetic circuit portion 42 are respectively provided on both sides of the diaphragm 21 in the embodiment of the present invention.
  • the first magnetic circuit part 41 further includes a third magnetic element 413 , the third magnetic element 413 is disposed at both ends of the magnetic element group 411 , and the third magnetic element 413 The extending direction of is perpendicular to the extending direction of the first magnetic member 412 .
  • the extending direction of the third magnetic member 413 is perpendicular to the extending direction of the first magnetic member 412, so that the third magnetic member 413 is used to strengthen the first magnetic member 413.
  • the magnetic field in the extending direction of the magnetic member 412 makes the voice coil 22 corresponding to the third magnetic member 413 act by the magnetic force generated by the third magnetic member 413 , thereby controlling the reciprocating vibration of the diaphragm 21 to improve the vibration sensitivity of the diaphragm 21 .
  • the magnetic circuit system 4 further includes a second magnetic circuit portion 42 , and the second magnetic circuit portion 42 and the first magnetic circuit portion 41 are respectively disposed on two opposite sides of the voice coil 22 .
  • the second magnetic circuit portion 42 includes second magnetic members 421, the number of the second magnetic members 421 is the same as the number of the first magnetic members 412, and the upper and lower corresponding first magnetic members 412 and second magnetic members 421 The magnetization directions are symmetrically arranged with respect to the plane where the voice coil 22 is located.
  • the second magnetic circuit portion 42 and the first magnetic circuit portion 41 are respectively arranged on opposite sides of the vibration system 2, and the first magnetic member 412 and the first magnetic circuit portion 41 in the upper and lower corresponding first magnetic circuit portions 41 are arranged
  • the magnetization directions of the second magnetic elements 421 in the two magnetic circuit parts 42 are opposite, that is, the magnetic fields generated by the magnetic element arrays on both sides of the diaphragm 21 are symmetrical, so that the magnetic field lines of the magnetic field where the diaphragm 21 is located are distributed. It is more uniform, and the change of the magnetic field strength in the vibration direction of the diaphragm 21 has better linearity.
  • the second magnetic circuit portion 42 and the first magnetic circuit portion 41 respectively form Halbach magnetic element arrays on the two sides of the diaphragm 21, which can help to alleviate the second harmonic of the diaphragm 21. Distortion and third harmonic distortion can further alleviate the distortion of the audio output by the speaker 100 and improve the sound quality of the audio output by the speaker 100 .
  • the size of the second magnetic circuit portion 42 so that the size of the second magnetic circuit portion 42 is between the size of the first magnetic circuit portion 41 , the effective magnetic field is fully utilized, and the output of the speaker 100 is further increased.
  • BL value is adjusting the size of the second magnetic circuit portion 42 so that the size of the second magnetic circuit portion 42 is between the size of the first magnetic circuit portion 41 .
  • the BL value of the speaker 100 is increased by 37.12% by changing the different magnetization directions of the second magnetic circuit portion 42 and the first magnetic circuit portion 41 on the opposite sides of the vibration system 2 to optimize.
  • a connecting member 414 is provided between two adjacent first magnetic members 412 to define the space between the two first magnetic members 412 . Assembly gap 415 between.
  • the connecting member 414 by disposing the connecting member 414 between two adjacent first magnetic members 412, the first magnetic member 412 is fixed by the connecting member 414, so as to ensure the relative relationship between the first magnetic circuit portion 41 and the diaphragm 21. The positional relationship is also fixed, thereby ensuring the vibration frequency of the diaphragm 21 .
  • an assembly gap 415 between the two first magnetic members 412 is defined by the connecting member 414 disposed between the two adjacent first magnetic members 41 .
  • the assembly gap 415 is used to facilitate the assembly of the first magnetic circuit portion 41 .
  • the assembly gap 415 can also be used to reduce the obstruction of the magnetic field to the airflow, so that the speaker 100 has good air compliance, so as to further improve the sound quality of the audio output by the speaker 100. Distortion of the output audio.
  • two adjacent first magnetic pieces 412 can also be arranged at intervals, so as to form a passage for air flow between two adjacent first magnetic pieces 412, so as to allow air flow to circulate in the magnetic field, thereby reducing the air flow rate.
  • the obstruction of the magnetic field to the airflow is reduced, so that the speaker 100 has good air compliance, so as to further alleviate the distortion of the audio output by the speaker 100 and improve the sound quality and treble effect of the audio output by the speaker 100 .
  • the two adjacent first magnetic members 412 can also be fixed relative to each other by gluing, mechanical pressing, and fixing to external structures such as brackets, so as to ensure that the surfaces of the two sides of the diaphragm 21 are fixed.
  • the relative positional relationship between the first magnetic circuit portion 41 and the second magnetic circuit portion 42 and the diaphragm 21 is also fixed, which is not limited here.
  • the distance between any two adjacent first magnetic members 412 is the same.
  • the first magnetic member 412 may also be configured as a ring-magnetic-like structure, which is not limited herein.
  • the first magnetic member 412/second magnetic member 421 of the first magnetic circuit portion 41 and the second magnetic circuit portion 42 may also be provided as sheets of magnetic material, eg powdered ferrite in a binder where different regions are exposed to different magnetic fields for magnetization.
  • the first magnetic member 412/second magnetic member 421 of the first magnetic circuit portion 41 and the second magnetic circuit portion 42 may be independent magnets, such as magnetic strips, which may be magnetized in different directions and then side by side Arranged to effectively form a flat magnetic array with a rotating magnetic field, without limitation.
  • two adjacent first magnetic members 412 are disposed in close contact with each other. It can be understood that the two adjacent first magnetic members 412 may be fixed by means of gluing or mechanical pressing, which is not limited herein.
  • the bracket 3 is formed as a hollow frame structure, the top of the bracket 3 is connected to the inner wall of the housing 1, and the magnetic circuit system 4 further includes a second magnetic circuit portion 42, The second magnetic circuit portion 42 and the first magnetic circuit portion 41 are respectively disposed on opposite sides of the voice coil 22, the second magnetic circuit portion 42 is located in the bracket 3, the bottom of the bracket 3 is provided with an escape port 31, the diaphragm 21 and the bracket The bottoms of 3 are connected and the voice coil 22 is located in the escape opening 31 .
  • the bracket 3 by setting the bracket 3 as a hollow frame structure, the top of the bracket 3 is connected to the inner wall of the housing 1, so that the hollow frame body of the bracket 3 defines the second magnetic circuit part 42, which can be used in this way.
  • the bracket 3 of the magnetically conductive material has a magnetizing effect on the second magnetic circuit portion 42 in the hollow frame, thereby further increasing the magnetic field strength of the second magnetic circuit portion 42 acting on the diaphragm 21 and the voice coil 22 .
  • the escape port 31 can be used to provide an escape space for the voice coil 22 , so that the voice coil 22 is easily subjected to the magnetic force of the first magnetic circuit portion 41 .
  • the bracket 3 in order to ensure the gap between the voice coil 22 and the first magnetic circuit part 41 when the bracket 3 abuts against the first magnetic circuit part 41, the bracket 3 has a side wall 33 facing the voice coil side, The side wall 33 at least partially overlaps with the projection of the outer wall of the voice coil 22 in the horizontal direction, that is, the bottom part of the bracket 3 protrudes from the surface of the voice coil 22 facing the first magnetic circuit part 41 , so that the magnetic concentration of the bracket 3 can be improved. Effect. Further, the projection of the side wall 33 and the outer wall of the voice coil 22 in the horizontal direction completely overlaps.
  • the bracket 3 is provided with a horizontal connecting portion 32 extending horizontally.
  • the side of the horizontal connecting portion 32 facing the voice coil is a side wall 33 .
  • a magnetic circuit portion 41 stops.
  • the horizontal connecting portion 32 extending horizontally is provided at the bottom of the bracket 3 , so that the horizontal connecting portion 32 is connected to the diaphragm 21 , and the installation stability of the diaphragm 21 is further improved.
  • the side of the horizontal connecting portion 32 facing the voice coil is the side wall 33 , that is, the side wall 33 and the projection of the outer wall of the voice coil 22 in the horizontal direction at least partially overlap, so that the bottom of the horizontal connecting portion 32 can be connected with the first When the magnetic circuit portion 41 stops, a gap between the voice coil 22 and the first magnetic circuit portion 41 is ensured.
  • the horizontal connection portion 32 is arranged so that when the bracket 3 is installed in the installation space 11 of the housing 1, the bracket 3 stops abutting against the first magnetic circuit portion 41 through the bottom of the horizontal connection portion 32, so that convenient assembly can be achieved, and the lifting The effect of assembly accuracy.
  • the bracket 3 is connected to the diaphragm 21 , and the voice coil 22 is arranged on the diaphragm 21 , and the gap between the voice coil 22 and the first magnetic circuit part 41 can be controlled by controlling the mounting height of the bracket 3 .
  • the installation tolerance of the bracket 3 and the voice coil 22 can be easily controlled, and the assembly efficiency and assembly accuracy can be improved.
  • the material of the bracket 3 can be selected as SPCC, which can improve the magnetic conductivity and increase the BL value of the speaker 100 , which is not limited here.
  • FIG. 14 shows the simulation result of the magnetic field distribution in which the first magnetic circuit portion 41 and the second magnetic circuit portion 42 are respectively provided on both sides of the diaphragm 21 in the embodiment of the present invention. It can be seen that the bracket 3 of the magnetic conductive material is used, and the horizontal connecting portion 32 extending horizontally is arranged on the bracket 3, so that the magnetic concentration effect of the magnetic field where the voice coil 22 is located is further improved by using the horizontal connecting portion 32.
  • the diaphragm 21 is a single-layer metal material. It can be understood that the diaphragm 21 can be selected as a flat single-layer metal material, so as to improve the sensitivity of the diaphragm 21 .
  • the diaphragm 21 is an aluminum plate or the like, which is not limited herein.
  • the diaphragm 21 can also be made of a single-layer film made of materials such as PET (polyester film), PEEK (polyetheretherketone), PAR (polyarylate), or PI (polyimide).
  • PET polyyester film
  • PEEK polyetheretherketone
  • PAR polyarylate
  • PI polyimide
  • the diaphragm 21 of the single-layer film material is either too hard and brittle, the surface of the diaphragm 21 is uneven when the tension is small, and the diaphragm 21 is too tight when the tension is large, and the diaphragm is easy to break; or it is too soft, the surface tension of the diaphragm 21 is not enough, and because The diaphragm 21 is too easy to stretch, and the tension decreases with time or after vibration, and finally the diaphragm 21 is too loose.
  • the internal damping of the single-layer film material is insufficient, and the trailing edge characteristics of the transient characteristics of the diaphragm 21 are not good, that is, when the vibration coil stops energizing, the internal damping of the diaphragm 21 is too small, and it needs a longer delay to stop the vibration.
  • the diaphragm 21 is formed as a composite layer structure, and at least the surface connected with the voice coil 22 is made of metal material.
  • the vibrating membrane 21 can play a good supporting role and provide sufficient rigidity.
  • the surface connecting the diaphragm 21 and the voice coil 22 is made of metal material, so that the metal material can play a good supporting role and provide sufficient rigidity, and other composite structures of the diaphragm 21 can be used. Provide good elasticity and sufficient damping, so that the diaphragm 21 has the effect of low distortion in a relatively large vibration range.
  • the vibrating membrane 21 can optionally be a double-layer or a multi-layer composite structure, which is not limited herein.
  • the double-layer composite structure is used as an example to illustrate.
  • the diaphragm 21 includes a first sub-diaphragm and a second sub-diaphragm.
  • the first sub-diaphragm can play a good supporting role and provide sufficient rigidity, while the second sub-diaphragm
  • the diaphragm can provide good elasticity and sufficient damping, so that the diaphragm 21 has the effect of low distortion in a relatively large vibration range.
  • the material of the first sub-diaphragm can be selected from a metal material, such as an aluminum plate
  • the material of the second sub-diaphragm can be selected from PEEK (polyether ether ketone), PAR (polyarylate), TPU (Thermoplastic Polyurethanes, Thermoplastic polyurethane elastomer rubber) or TPE (Thermoplastic Elastomer, thermoplastic elastomer) and so on.
  • the first sub-diaphragm and the second sub-diaphragm may be bonded by an adhesive layer such as acrylic or silica gel or other soft polymer materials, which is not limited herein.
  • the voice coil 22 is formed in a square shape. It can be understood that by setting the voice coil 22 in a square structure, the voice coil 22 includes the first straight side and the second straight side connected in sequence, that is, the first wire segment 221 and the second wire segment 222 of the voice coil 22 The two opposite first straight sides or the two second straight sides are arranged in this way, so that the voice coil 22 effectively increases the magnetic flux relative to the traditional racetrack voice coil.
  • the voice coil 22 can be formed by printing, vapor deposition, or 3D printing on the surface of the diaphragm 21 .
  • the surface of the diaphragm 21 may be provided with the voice coil 22 only on one surface, or may be provided with the voice coil 22 on both sides of the surface of the diaphragm 21 , which is not limited herein.
  • the diaphragm 21 By passing a current on the voice coil 22, the diaphragm 21 is driven to vibrate in a predetermined direction to produce sound, wherein by continuously changing the current flow in the voice coil 22, the direction of the magnetic force on the voice coil 22 is constantly changed, thereby controlling the vibration.
  • the membrane 21 vibrates back and forth. It can be understood that, the greater the number of voice coils 22, the greater the magnetic force driving the vibration of the diaphragm 21, and the higher the sensitivity of controlling the vibration of the diaphragm 21. However, the size of the surface of the diaphragm 21 and the product specifications of the loudspeaker 100 also need to be considered, which are not limited here.
  • the wire material of the voice coil 22 may be metals such as aluminum, copper, nickel, gold, and silver, or an alloy of these metals, which is not limited herein.
  • the part of the coil 22 will exhibit different divided vibrations, that is, the vibration amplitude of the part of the surface of the diaphragm 21 where the voice coil 22 is provided is larger than that of the part where the voice coil 22 is not provided. As a result, peaks and valleys will be generated in the frequency response curve of the speaker 100 , so that the audio output by the speaker 100 will be distorted, and finally the acoustic performance of the speaker 100 will be deteriorated.
  • the vibration system 2 further includes a reinforcement portion 23 , and the reinforcement portion 23 is provided on the surface of the diaphragm 21 , wherein the hardness of the reinforcement portion 23 is greater than that of the diaphragm 21 to strengthen the overall surface of the diaphragm 21 . Rigid, so that the surface of the diaphragm 21 has a uniform vibration amplitude as much as possible, and the diaphragm 21 behaves as a whole piston vibration.
  • the shape of the reinforcement portion 23 may be a circle, and of course, the shape of the reinforcement portion 23 may also be a strip shape, a comb shape, or the like.
  • a plurality of reinforcing parts 23 are arranged on the diaphragm 21, and the extending direction of the reinforcing parts 23 intersects with the voice coil 22, and can be selected to be vertical, thereby forming a cross-grid shape, and the voice coil 22 can also play the role of
  • the overall rigidity of the surface of the diaphragm 21 must be strengthened, and the voice coil 22 and the reinforcing portion 23 together strengthen the overall rigidity of the surface of the diaphragm 21 .
  • the reinforcing portion 23 and the voice coil 22 may be disposed on opposite sides of the diaphragm 21 , which is not limited herein.
  • the speaker 100 of the present invention forms a magnetic field with a strong magnetic field intensity by arranging a magnetic circuit part on at least one side of the vibration system 2, so that the diaphragm 21 is in a strong magnetic field intensity, so that the magnetic induction at the diaphragm 21 is
  • the line distribution is uniform and the change of the magnetic field strength has good linearity, which can effectively improve the sound quality of the audio output by the speaker 100 and improve the high-pitched effect, and at the same time can alleviate the distortion of the audio output by the speaker 100 to a certain extent.
  • the vibration system 2 is suspended in the installation space 11 of the housing 1 by the bracket 3, and the bracket 3 is set as a magnetic conductive material
  • the bracket 3 is used to provide stability for the installation of the vibration system 2
  • the side wall 33 of the bracket 3 facing the voice coil side and the projection of the outer wall of the voice coil 22 in the horizontal direction are at least partially overlapped, so that the bracket 3 of the magnetic conductive material is used.
  • the magnetization effect is achieved, so that the magnetic field lines generated by the magnetic circuit system 4 vertically pass through the first wire segment 221 and the second wire segment 222 of the voice coil 22 in the horizontal direction, and pass through the first wire segment 221 and the second wire segment 222
  • the direction of the magnetic field lines is opposite, so that the magnetic field lines at the diaphragm 21 are uniformly distributed and the magnetic field changes in the vibration direction of the diaphragm 21 have good linearity, which can greatly reduce the distortion of the audio output by the speaker 100, improve the The sound quality and treble effect of the audio output by the speaker 100 .
  • the invention also provides an electronic device, which includes a device body and a speaker 100 .
  • the specific structure of the speaker 100 refers to the foregoing embodiments. Since the electronic device adopts all the technical solutions of the foregoing embodiments, it has at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be repeated here. .

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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

La présente invention concerne un haut-parleur et un dispositif électronique. Le haut-parleur comprend un boîtier, un système de vibration, un support et un système de circuit magnétique, le système de vibration étant disposé dans un espace de montage du boîtier et comprenant une membrane et une bobine acoustique, la bobine acoustique comporte au moins une première section de fil et une seconde section de fil qui sont disposées de façon opposée, et des directions de courant dans la première section de fil et la seconde section de fil sont opposées ; le support est une pièce en matériau conducteur magnétique, est reliée à la membrane et est pourvue d'une paroi latérale faisant face à la bobine acoustique, et des saillies de la paroi latérale et de la bobine acoustique dans une direction horizontale sont au moins partiellement chevauchées ; et le système de circuit magnétique étant disposé dans l'espace de montage et étant disposé à l'opposé et à distance de la bobine acoustique, au moins certaines des lignes magnétiques du système de circuit magnétique pénètrent perpendiculairement à la première section de fil et à la seconde section de fil dans la direction horizontale, et les directions des lignes magnétiques pénétrant dans la première section de fil et la seconde section de fil sont opposées. La présente invention vise à fournir un haut-parleur qui peut améliorer efficacement la qualité sonore et améliorer un effet de ton aiguë.
PCT/CN2021/136223 2021-02-07 2021-12-08 Haut-parleur et dispositif électronique WO2022166373A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202111586609.8A CN114286266B (zh) 2021-02-07 2021-12-21 扬声器和电子设备
CN202111575847.9A CN114257933B (zh) 2021-02-07 2021-12-21 扬声器和电子设备
CN202111573608.XA CN114257932B (zh) 2021-02-07 2021-12-21 扬声器和电子设备

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110180812 2021-02-07
CN202110180812.9 2021-02-07

Publications (1)

Publication Number Publication Date
WO2022166373A1 true WO2022166373A1 (fr) 2022-08-11

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1377115A2 (fr) * 2002-06-24 2004-01-02 Matsushita Electric Industrial Co., Ltd. Membrane de haut-parleur
US20080063235A1 (en) * 2004-05-27 2008-03-13 Matsushita Electric Industrial Co., Ltd. Loudspeaker
CN201435823Y (zh) * 2009-04-21 2010-03-31 美律实业股份有限公司 电声转换器
CN102711025A (zh) * 2012-01-11 2012-10-03 瑞声声学科技(深圳)有限公司 磁路系统及其扬声器
CN107113506A (zh) * 2015-01-16 2017-08-29 苹果公司 海尔贝克阵列音频换能器
CN214381371U (zh) * 2021-03-04 2021-10-08 歌尔股份有限公司 扬声器和电子设备
CN214381372U (zh) * 2021-03-04 2021-10-08 歌尔股份有限公司 扬声器和电子设备

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1377115A2 (fr) * 2002-06-24 2004-01-02 Matsushita Electric Industrial Co., Ltd. Membrane de haut-parleur
US20080063235A1 (en) * 2004-05-27 2008-03-13 Matsushita Electric Industrial Co., Ltd. Loudspeaker
CN201435823Y (zh) * 2009-04-21 2010-03-31 美律实业股份有限公司 电声转换器
CN102711025A (zh) * 2012-01-11 2012-10-03 瑞声声学科技(深圳)有限公司 磁路系统及其扬声器
CN107113506A (zh) * 2015-01-16 2017-08-29 苹果公司 海尔贝克阵列音频换能器
CN214381371U (zh) * 2021-03-04 2021-10-08 歌尔股份有限公司 扬声器和电子设备
CN214381372U (zh) * 2021-03-04 2021-10-08 歌尔股份有限公司 扬声器和电子设备

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