WO2022143027A1 - Haut-parleur et terminal électronique - Google Patents

Haut-parleur et terminal électronique Download PDF

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Publication number
WO2022143027A1
WO2022143027A1 PCT/CN2021/135881 CN2021135881W WO2022143027A1 WO 2022143027 A1 WO2022143027 A1 WO 2022143027A1 CN 2021135881 W CN2021135881 W CN 2021135881W WO 2022143027 A1 WO2022143027 A1 WO 2022143027A1
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WO
WIPO (PCT)
Prior art keywords
magnetic circuit
diaphragm
section
straight section
gap
Prior art date
Application number
PCT/CN2021/135881
Other languages
English (en)
Chinese (zh)
Inventor
刘华伟
孙立国
Original Assignee
歌尔股份有限公司
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Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2022143027A1 publication Critical patent/WO2022143027A1/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the technical field of acoustic and electrical products, in particular to a loudspeaker and an electronic terminal applying the loudspeaker.
  • Speaker is an important acoustic component of portable electronic equipment, which is used to complete the conversion between electrical signal and sound signal, and is an energy conversion device.
  • the electrical signal conducting support of the speaker structure is adhered to the bottom surface of the voice coil, so that the design of the lower vibration space of the speaker is limited, thereby affecting the acoustic performance of the speaker.
  • the main purpose of the present utility model is to provide a loudspeaker and an electronic terminal, aiming to provide a loudspeaker capable of increasing the lower vibration space and effectively improving the sound quality and acoustic performance of the loudspeaker.
  • the present utility model proposes a loudspeaker, the loudspeaker comprising:
  • the casing assembly is provided with a cavity
  • the magnetic circuit system is arranged in the cavity
  • a vibration system comprises a vibrating membrane, a spherical top and a skeleton arranged opposite to the magnetic circuit system, the skeleton comprises a body part and at least one leg part, the body part encloses a through hole, and is connected with the The diaphragm is connected, and the support foot has a straight section connected with the main body and an extension section bent downward from the side of the straight section facing the through hole, the straight section along the The horizontal direction extends toward the direction close to the magnetic circuit system, and at least a portion of the straight section is in contact with the bottom of the diaphragm to support the diaphragm; and
  • a balance component one end of the balance component is connected with the housing component, and the other end is connected with the end of the extension section away from the straight section.
  • the skeleton further comprises at least one connecting portion disposed on the side of the body portion facing away from the vibrating membrane, and the connecting portion and the extending section are arranged at intervals;
  • the vibration system further includes a voice coil connected to the connecting portion.
  • the connecting portion is formed by bending a side of the body portion facing the through hole toward a side facing away from the diaphragm;
  • the connecting portion includes a plurality of connecting portions, and the plurality of connecting portions are spaced apart and disposed around the through hole.
  • the body portion, the leg portion and the connecting portion are integrally stamped and formed sheet metal structures.
  • the body portion and the straight section are enclosed to form a limiting groove that communicates with the through hole, the spherical top is provided with a first limiting portion corresponding to the limiting groove, and the first limiting portion is formed. a limiting portion is accommodated and limited in the limiting groove;
  • At least one notch is provided on the side of the body portion away from the through hole, the dome is provided with a second limiting portion corresponding to the notch, and the second limiting portion covers the notch and connect with the diaphragm.
  • the top surface of the dome is flush with the top surface of the main body
  • the top surface of the first limiting portion is flush with the notch of the limiting groove
  • the top surface of the second limiting portion is flush with the top surface of the main body portion.
  • the body portion is provided as a rectangular ring
  • the support leg portion includes four
  • the four support leg portions are respectively disposed at four corners of the body portion.
  • one end of the extension section away from the straight section is bent and extended toward a side away from the straight section to form a bent section, and the bent section is connected with the balance component.
  • the magnetic circuit system includes a magnetic conductive yoke, a central magnetic circuit portion and a plurality of side magnetic circuit portions provided on the magnetic conductive yoke, the central magnetic circuit portion and a plurality of the side magnetic circuit portions.
  • a magnetic gap is formed between the circuit parts, a gap is formed between each of the side magnetic circuit parts and the side wall of the cavity, and a connection between the magnetic gap and the In the avoidance space of the gap, the balance component is disposed corresponding to the gap, and one end of the extension section away from the straight section extends into the avoidance space and is connected with the balance component.
  • the central magnetic circuit portion includes a central magnet and a central magnetic conducting plate, and the central magnet is sandwiched between the magnetic conducting yoke and the central magnetic conducting plate;
  • Each of the side magnetic circuit parts includes a side magnet and a side magnetic conductive plate, the side magnet is sandwiched between the magnetic conductive yoke and the side magnetic conductive plate, and the side magnetic conductive plate is connected to the other side through the fixing section.
  • the side wall of the cavity is connected and enclosed with the side wall of the cavity to form the gap, and the gap extends toward the avoidance space and communicates with the avoidance space.
  • the balancing assembly includes:
  • the centering support piece is provided in the gap and connected with the housing assembly;
  • Auxiliary diaphragm two opposite sides of the auxiliary diaphragm are provided with two straight portions extending away from each other, one of the straight portions is connected with the centering support piece, and the other straight portion is penetrated through the The gap extends into the avoidance space and is connected to one end of the extension section away from the straight section.
  • the housing assembly and the plurality of side magnetic conducting plates are integrally formed
  • the centering support piece is made of FPCB material.
  • the utility model also provides an electronic terminal, comprising a device casing and the above-mentioned speaker, wherein the device casing is provided with a cavity, and the speaker is provided in the cavity.
  • the magnetic circuit system is arranged in the cavity of the housing component, so that the vibrating film of the vibration system and the magnetic circuit system are arranged opposite to each other.
  • One side of the skeleton is connected, and the leg portion of the skeleton is set as a straight section connected with the main body and an extension section bent downward from the side of the straight section facing the through hole, so that the straight section faces close to the horizontal direction.
  • the direction of the magnetic circuit system extends, and at least a part of the flat section is in contact with the bottom of the diaphragm to support the diaphragm, and the flat section is used to support and connect the dome, so as to realize the support and connection of the dome and the diaphragm through the skeleton , effectively reduce the size of the dome and the thickness of the vibration system, and use the extension section to connect with the balance component, so as to connect the diaphragm and the balance component as a whole, to improve the swing of the vibration system and avoid the diaphragm during the vibration process. There is left and right swing, which affects the sound production effect.
  • the bonding position of the balance component and the vibration system can be flexibly adjusted to ensure sufficient lower vibration space, so as to increase the lower vibration space of the speaker and effectively improve the sound quality and acoustic performance of the speaker .
  • FIG. 1 is an exploded schematic diagram of a speaker in an embodiment of the present invention
  • FIG. 2 is an exploded schematic view of a speaker in another embodiment of the present invention.
  • FIG. 3 is a schematic cross-sectional view of a speaker in an embodiment of the present invention.
  • FIG. 4 is a schematic cross-sectional view of a speaker from another viewing angle in an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of the connection between the skeleton and the dome in an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of the connection between the skeleton and the dome in another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a skeleton in an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of the skeleton from another perspective in an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a skeleton in another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a dome in an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a dome in another embodiment of the present invention.
  • Speaker is an important acoustic component of portable electronic equipment, which is used to complete the conversion between electrical signal and sound signal, and is an energy conversion device.
  • the electrical signal conducting support of the speaker structure is adhered to the bottom surface of the voice coil, so that the design of the lower vibration space of the speaker is limited, thereby affecting the acoustic performance of the speaker.
  • the present invention proposes a loudspeaker 100 .
  • the speaker 100 is applied to an electronic terminal, and the electronic terminal may be an electronic device, such as a mobile phone, a stereo, a computer, an earphone, a watch, a TV, or a tablet computer, which is not limited herein.
  • the speaker 100 includes a housing component 1 , a magnetic circuit system 2 , a vibration system 3 and a balance component 4 , wherein the housing component 1 is provided with a housing component 1 .
  • the body portion 321 encloses a through hole 3211 and is connected to the diaphragm 31.
  • the leg portion 322 has a straight section 3221 connected with the body section 321 and a side of the straight section 3221 facing the through hole 3211 that is bent and extended downward.
  • the extension section 3222, the straight section 3221 extends along the horizontal direction toward the direction close to the magnetic circuit system 2, at least a part of the straight section 3221 is in contact with the bottom of the diaphragm 31 to support the diaphragm 31; one end of the balance component 4 is connected to the housing component 1 is connected, and the other end is connected with the end of the extension section 3222 away from the straight section 3221.
  • the housing assembly 1 is used to install, fix and protect the magnetic circuit system 2 , the vibration system 3 , the balance assembly 4 and other components of the speaker 100 .
  • the structures such as the mounting shell and the mounting frame are not limited here.
  • the magnetic circuit system 2 is disposed in the cavity 13 of the housing assembly 1 , and the magnetic circuit system 2 and the side wall of the cavity 13 are spaced apart. It can be understood that the housing assembly 1 is used to fix and install the magnetic circuit system 2 , and a support arm is protruded from the periphery of the housing assembly 1 and is connected to the magnetic circuit system 2 .
  • the housing assembly 1 includes a housing 11 and a front cover 12 , the housing 11 and the front cover 12 enclose a cavity 13 with one end open, and the diaphragm 31 is sandwiched between Between the front cover 12 and the housing 11 , the magnetic circuit system 2 is covered with the opening of the cavity 13 . It can be understood that the magnetic circuit system 2 is disposed at the opening of the housing 11 adjacent to the cavity 13 and encloses the cavity to form a cavity, and the vibration system 3 and the balance assembly 4 are disposed between the front cover 12 and the magnetic circuit system 2 .
  • the outer shell 11 of the housing assembly 1 is a metal part, the magnetic circuit system 2 and the outer shell 11 are fixed by bonding.
  • the casing 11 is plastic injection-molded, the side magnetic conductive plates of the magnetic circuit system 2 are firstly injected into the casing 11 as inserts, and then other parts are glued and fixed.
  • the housing assembly 1 by setting the housing assembly 1 as a two-part structure of the front cover 12 and the housing 11 , the installation of the magnetic circuit system 2 and the vibration system 3 is facilitated, and the installation convenience of the speaker 100 is improved.
  • a gap 14 is formed between the magnetic circuit system 2 and the side wall of the cavity 13 .
  • the diaphragm 31 of the vibration system 3 includes an inner ring portion, a folded ring portion arranged around the inner ring portion, and a fixed portion arranged around the folded ring portion.
  • the fixed portion of the diaphragm 31 is sandwiched between Between the housing 11 and the front cover 12, the connection stability of the fixing portion and the housing 11 can be improved.
  • the fixing portion can also be formed by extending downward from the outer edge of the folded ring portion, so that the fixing portion of the diaphragm 31 can be fixedly connected to the outer side wall of the housing 11, which can improve the connection between the fixing portion and the outer side wall of the housing 11.
  • the connection stability of the housing 11 improves the waterproof performance, and is also beneficial to increase the effective vibration area of the diaphragm 31, which is not limited herein.
  • the ring portion of the diaphragm 31 can be a convex ring structure or a concave ring structure, that is, the cross-street surface of the ring portion is a semicircle that is raised upward or a semicircle that is recessed downward, which is convenient for vibration.
  • the membrane 31 vibrates, thereby realizing sound generation.
  • the frame 32 is provided with a body portion 321 and at least one leg portion 322, so that the body portion 321 is enclosed to form a through hole 3211, which is connected to the diaphragm 31, and the leg portion 322 is set to be connected to the body portion.
  • the straight section 3221 connected by 321 and the extension section 3222 that is bent and extended downward from the side of the straight section 3221 facing the through hole 3211, so that the straight section 3221 extends in the horizontal direction toward the direction close to the magnetic circuit system 2, and is flat.
  • At least a part of the straight section 3221 is in contact with the bottom of the diaphragm 31 to support the diaphragm 31, so that when the dome 34 covers the through hole 3211, it is connected with the straight section 3221, so that the frame 32 passes through the body part 321 and the leg part 322
  • the straight section 3221 realizes the support and connection of the dome 34 and the diaphragm 31, effectively reducing the setting size of the dome 34 and the thickness of the vibration system 3, and uses the extension section 3222 of the foot part 322 to connect with the balance component 4 , so as to connect the diaphragm 31 and the balance assembly 4 as a whole, to improve the swing of the vibration system 3, to avoid the left and right swing of the diaphragm 31 during the vibration process, thereby affecting the sound production effect, and at the same time, the balance assembly 4 and the vibration system can be flexibly adjusted. 3 to ensure sufficient lower vibration space, so as to increase the lower vibration space of the speaker 100 and effectively improve the sound quality and acoustic performance of
  • the skeleton 32 includes one or more legs 322 .
  • the frame 32 includes four supporting leg portions 322 , and the four supporting leg portions 322 are arranged at intervals and connected with the body portion 321 .
  • the body portion 321 of the skeleton 32 encloses a through hole 3211 , and the straight sections 3221 of the four support legs 322 are connected to the side of the body portion 321 facing the through hole 3211 , that is, The straight sections 3221 of the four leg portions 322 are located inside the body portion 321 .
  • the body portion 321 of the skeleton 32 and the straight sections 3221 of the four leg portions 322 are connected in sequence and enclose to form through holes 3211 .
  • the straight sections of the four leg portions 322 are connected
  • the 3221 are arranged at intervals, and two ends of each straight section 3221 are respectively connected with the main body 321 , that is, the main section 321 is divided into four sections by the straight sections 3221 of the four legs 322 .
  • the extension sections 3222 of the four support legs 322 are formed by bending downwardly from the side of the straight section 3221 facing the through hole 3211, that is, the extension section 3222 is formed by bending the inner side of the straight section 3221 downward, so that the The four extending sections 3222 are arranged at intervals and are arranged around the through hole 3211 , which is not limited herein.
  • the magnetic circuit system 2 is arranged in the cavity 13 of the housing assembly 1, so that the diaphragm 31 of the vibration system 3 is arranged opposite to the magnetic circuit system 2, and by arranging the frame 32, the main body of the frame 32 321 is connected to the side of the diaphragm 31 facing the magnetic circuit system 2, and the leg portion 322 of the skeleton 32 is set as a straight section 3221 connected with the body portion 321 and the side of the straight section 3221 facing the through hole is bent downward.
  • Fold the extended extension section 3222 so that the straight section 3221 extends in the horizontal direction toward the direction close to the magnetic circuit system 2, and at least a part of the straight section 3221 is in contact with the bottom of the diaphragm 31 to support the diaphragm 31, and use the straight
  • the segment 3221 supports and connects the dome 34, so as to realize the support and connection of the dome 34 and the diaphragm 31 through the frame 32, effectively reducing the size of the dome 34 and the thickness of the vibration system 3, and using the extended segment 3222 to balance the
  • the component 4 is connected, so that the diaphragm 31 and the balance component 4 are connected as a whole, so as to improve the swing of the vibration system 3 and prevent the diaphragm 31 from swaying from side to side during the vibration process, thereby affecting the sound production effect.
  • the balance component 4 can be flexibly adjusted
  • the bonding position with the vibration system 3 ensures a sufficient lower vibration space, so as to increase the lower vibration space of the speaker 100 and effectively improve the sound quality and acoustic performance of the speaker 100 .
  • the frame 32 further includes at least one connecting portion 323 disposed on the side of the body portion 321 facing away from the diaphragm 31 .
  • the connecting portion 323 is connected to the extension section. 3222 are arranged at intervals; the vibration system 3 further includes a voice coil, and the voice coil is connected with the connecting part 323 .
  • the magnetic circuit system 2 is provided with a magnetic gap 24, and the vibration system 3 further includes a voice coil 33 suspended in the magnetic gap 24, so that the voice coil 33 is connected to the external circuit, and the voice coil 33 is connected to the external circuit. After the alternating current, the voice coil 33 is driven to vibrate up and down under the action of the magnetic field force of the magnetic circuit system 2.
  • the voice coil 33 drives the diaphragm 31 and the dome 34 of the vibration system 3 through the skeleton 32 to realize vibration and sound, and further convert the mechanical energy into sound energy.
  • the voice coil 33 arranged in the magnetic gap 24 receives the externally changing AC signal, it is driven by the magnetic field force of the magnetic circuit system 2 to perform a reciprocating motion of cutting the magnetic lines of force, driving the diaphragm 31 and the ball of the vibration system 3.
  • the top 34 vibrates and sounds.
  • extension section 3222 and the connecting portion 323 are provided on the side of the skeleton 32 away from the diaphragm 31 , so that the skeleton 32 is connected to the voice coil 33 through the connecting portion 323 , so that the diaphragm 31 can communicate with the sound through the skeleton 32 .
  • the connection of the coil 33 is connected with the balance component 4 through the extension section 3222 of the skeleton 32, so as to realize the flexible adjustment of the connection position of the balance component 4 and the voice coil 33, so as to ensure that there is sufficient vibration space under the voice coil 33, and effectively improve the loudspeaker. sound quality and acoustic performance.
  • the main body 321 of the frame 32 is connected to the side of the diaphragm 31 facing the magnetic circuit system 2, and the side of the frame 32 facing away from the diaphragm 31 is provided with spaced extensions
  • the segment 3222 and the connecting part 323 are connected with the voice coil 33 by the connecting part 323 of the bobbin 32, and are connected with the balance component 4 by the extension section 3222, so that the electrical signal is conducted to the balance component through the connecting part 323 and the extending part 3222 of the skeleton 32 4.
  • the bonding position of the balance component 4 and the voice coil 33 can be flexibly adjusted to ensure sufficient lower vibration space, so as to increase the lower vibration space of the speaker 100 and effectively improve the sound quality and acoustic performance of the speaker 100.
  • the frame 32 can be connected to the diaphragm 31 through the body portion 321, and can also be connected to the dome 34 through the straight section 3221 of the leg portion 322, so as to ensure the structural strength of the diaphragm 31 and ensure the stability of the diaphragm 31. At the same time of stability, the size of the dome 34 and the thickness of the vibration system 3 are reduced.
  • the extension section 3222 and the connecting portion 323 are provided on the side of the body portion 321 that faces away from the dome 34 and the diaphragm 31, so that the skeleton 32 is connected to the voice coil 33 through the connecting portion 323, and is connected to the voice coil 33 through the extension section.
  • the 3222 is connected to the balance component 4, so that the electrical signal of the voice coil 33 is conducted to the balance component 4 through the skeleton 32, avoiding the connection between the balance component 4 and the lower part of the voice coil 33, thereby limiting the vibration space below the voice coil 33.
  • the connecting portion 323 is formed by bending the side of the body portion 321 facing the through hole 3211 toward the side facing away from the diaphragm 31 .
  • the connecting portion 323 includes a plurality of connecting portions 323 , and the plurality of connecting portions 323 are spaced apart and disposed around the through hole 3211 . It can be understood that the skeleton 32 is connected with the voice coil 33 through the plurality of connecting parts 323 by disposing a plurality of connecting parts 323, so as to improve the connection stability.
  • the frame 32 includes four connecting parts 323, which are not limited herein.
  • the body portion 321 , the leg portion 322 and the connecting portion 323 are integrally formed sheet metal structures by stamping. It can be understood that, on the one hand, this arrangement is beneficial to improve the structural strength of the skeleton 32 ; on the other hand, it is beneficial to simplify the processing steps of the skeleton 32 .
  • the metal material of the skeleton 32 is one of aluminum, aluminum-magnesium alloy, aluminum-lithium alloy, and titanium alloy, so that the electrical signal of the voice coil 33 can be effectively conducted to the balance component 4 .
  • the skeleton 32 can also be made of rigid plastic, carbon fiber, etc., so that a conductive layer can be arranged inside the skeleton 32, that is, the conductive layer is wrapped with rigid plastic, carbon fiber and other materials, and the conductive layer and the voice coil are formed.
  • the 33 is electrically connected with the balance component 4 to realize electrical signal transmission, which is not limited herein.
  • the body portion 321 and the straight section 3221 are enclosed to form a limiting groove 3212 communicating with the through hole 3211 .
  • the ball top 34 is provided with a first limiting portion 341 corresponding to the limiting groove 3212 , and the first limiting portion 341 is accommodated and limited in the limiting groove 3212 .
  • the body portion 321 of the skeleton 32 is enclosed to form a through hole 3211, and the dome 34 is used to cover the through hole 3211, so as to achieve reinforcement, and at the same time, there are It is beneficial to reduce the material used for the skeleton 32 and reduce the cost.
  • the dome 34 is covered with the through hole. 3211 , the first limiting portion 341 is accommodated and limited in the limiting groove 3212 , so as to improve the connection strength and stability between the frame 32 and the dome 34 .
  • the body portion 321 and the four straight sections 3221 of the four supporting leg portions 322 are enclosed to form four limiting grooves 3212 , and the dome 34 is provided with four first limiting portions 341 , which are not limited herein.
  • the top surface of the dome 34 is flush with the top surface of the body portion 321 .
  • the top surface of the first limiting portion 341 is flush with the notch of the limiting groove 3212 . It can be understood that this arrangement can ensure that the body portion 321 of the skeleton 32 and the dome 34 are on the same plane after being connected, so that the matching structure is more compact, so as to avoid the height difference, and at the same time, the inner ring portion of the diaphragm 31 does not increase.
  • the extra thickness avoids affecting the vibration performance of the diaphragm 31 when the dome 34 vibrates through the body portion 321 of the skeleton 32 , thereby affecting the acoustic performance of the speaker 100 .
  • the frame 32 includes a plurality of leg portions 322 , so that the plurality of leg portions 322 have a plurality of downwardly bent extension sections 3222 .
  • each extending section 3222 is formed by extending downward from the bottom wall of each limiting groove 3212 toward the side away from the first limiting portion 341
  • each connecting portion 323 is formed by the body portion 321 adjacent to the inner wall of the through hole 3211 .
  • the side facing away from the dome 34 extends downward, and each connecting portion 323 is located between two adjacent extending sections 3222 .
  • multiple extension sections 3222 and multiple connecting portions 323 are provided on the skeleton 32, so that the skeleton 32 is connected to the voice coil 33 through the multiple connecting portions 323, so as to improve the connection stability.
  • the skeleton 32 is connected to the balance component 4 through a plurality of extension sections 3222, so as to improve the connection stability and ensure smooth conduction of electrical signals.
  • the skeleton 32 includes four extending sections 3222 and four connecting portions 323 .
  • At least one notch 3213 is provided on the side of the body portion 321 away from the through hole 3211 , and the dome 34 is provided with a corresponding notch 3213
  • the second limiting portion 342 covers the gap 3213 and is connected to the diaphragm 31 .
  • the first limiting portion 341 of the dome 34 is fixedly connected to the limiting groove 3212 of the frame 32 through glue, and the dome 34 is fixedly connected to the inner ring portion of the diaphragm 31 through glue.
  • the body portion 321 of the skeleton 32 is provided with a plurality of notches 3213 , and the plurality of notches 3213 are arranged at intervals along the side of the body portion 321 away from the through hole 3211 , that is, the plurality of notches 3213 are arranged at intervals along the outer edge of the body portion 321 .
  • the body portion 321 of the frame 32 is provided with four notches 3213
  • the dome 34 is provided with four second limiting portions 342 , each of which is provided with four notches 3213 .
  • the notch 3213 is disposed corresponding to a connecting portion 323 , and each connecting portion 323 is spaced between two adjacent extending sections 3222 .
  • the top surface of the second limiting portion 342 is flush with the top surface of the main body portion 321 . It can be understood that this arrangement can ensure that the body portion 321 and the dome 34 are on the same plane after being connected, so as to avoid the height difference, and at the same time, the inner ring portion of the diaphragm 31 does not increase the extra thickness, so as to avoid the passage of the diaphragm 31 .
  • the body portion 321 of the frame 32 drives the vibration performance of the dome 34 when it vibrates, which affects the acoustic performance of the speaker 100 .
  • the body portion 321 is provided in the form of a rectangular ring.
  • the supporting leg portions 322 include four, and the four supporting leg portions 322 are respectively disposed at four corners of the body portion 321 .
  • one end of the extension section 3222 away from the straight section 3221 is bent and extended toward the side away from the straight section 3221 to form a bent section 3223 .
  • the folded section 3223 is connected to the balance assembly 4 .
  • the bending section 3223 is formed by bending the end of the extension section 3222 away from the straight section 3221, on the one hand, the end of the extension section 3222 away from the straight section 3221 is avoided to have a pointed structure, so that The stability of the assembly connection with other structures is improved; on the other hand, the pointed structure at the end of the extension section 3222 away from the straight section 3221 is prevented from being scratched or affecting the assembly of other structures.
  • connection between the extension section 3222 and the straight section 3221 is arranged in a circular arc transition. It can be understood that this arrangement is beneficial to improve the connection strength between the straight section 3221 and the extension section 3222 of the skeleton 32 on the one hand. On the other hand, avoid sharp corners at the connection between the straight section 3221 of the frame 32 and the extension section 3222, thereby scratching the diaphragm 31 or affecting the connection with the diaphragm 31.
  • the magnetic circuit system 2 includes a magnetic conductive yoke 21 , a central magnetic circuit portion 22 and a plurality of side magnetic circuit portions 23 disposed on the magnetic conductive yoke 21 .
  • a magnetic gap 24 is formed between the magnetic circuit part 22 and the plurality of side magnetic circuit parts 23
  • a gap 14 is formed between each magnetic circuit part 23 and the side wall of the cavity 13
  • a communication magnetic circuit is formed between two adjacent magnetic circuit parts 23 .
  • the gap 24 and the avoidance space 15 of the gap 14, the balance component 4 is arranged corresponding to the gap 14, the end of the extension section 3222 away from the straight section 3221 extends into the avoidance space 15, and is connected with the balance component 4.
  • the magnetic yoke 21 is fixed to the end of the outer shell 11 of the housing assembly 1 away from the front cover 12 , and the central magnetic circuit portion 22 and the side magnetic circuit portion 23 are arranged on the side of the magnetic yoke 21 facing the dome 34 , and the side magnetic circuit portion 23 is disposed around the central magnetic circuit portion 22 and forms a magnetic gap 24 with the central magnetic circuit portion 22 , so that the voice coil 33 can be suspended in the magnetic gap 24 conveniently.
  • a gap 14 is formed between each side magnetic circuit part 23 and the side wall of the cavity 13 , so that the balance assembly 3 can be easily installed in the gap 14 .
  • the avoidance space 15 connecting the magnetic gap 24 and the gap 14 is formed between the two adjacent side magnetic circuit parts 23 , so that the end of the straight section 3221 of the extension section 3222 away from the skeleton 32 can be extended into the avoidance space 15 , and balance with the Component 4 is connected.
  • the central magnetic circuit portion 22 includes a central magnet 221 and a central magnetic conductive plate 222, and the central magnet 221 is sandwiched between the magnetic conductive yoke 21 and the central magnetic conductive plate 222;
  • Each side magnetic circuit portion 23 includes a side magnet 231 and a side magnetic conducting plate 232.
  • the side magnet 231 is sandwiched between the magnetic conducting yoke 21 and the side magnetic conducting plate 232.
  • the side walls are connected and enclosed with the side walls of the cavity 13 to form a gap 14 .
  • the gap 14 extends toward the avoidance space 15 and communicates with the avoidance space 15 .
  • the central magnet 221 and the central magnetic conductive plate 222 have the same structural outline, and the central magnet 221 and the central magnetic conductive plate 222 can be selected as plate-like structures.
  • the side magnets 231 and the side magnetic conductive plate 232 have the same structure and outline, and the side magnets 231 and the side magnetic conductive plate 232 can be optionally of annular structure.
  • the side magnetic conductive plate 232 is connected to the side wall of the cavity 13 through the fixing section 233 , and is enclosed with the side wall of the cavity 13 to form a gap 14 , and the gap 14 faces the avoidance space 15 It extends and communicates with the avoidance space 15 .
  • This arrangement is beneficial to simplify the processing technology of the side magnetic conducting plate 232 and the casing 11 .
  • the material of the casing 11 and the side magnetic conductive plate 232 are both metal materials, which is beneficial to improve the heat conduction and heat dissipation effect.
  • the outer shell 11 of the housing assembly 1 and the plurality of side magnetic conducting plates 232 are integrally formed.
  • the balance assembly 4 includes a centering support piece 41 and an auxiliary diaphragm 42 , wherein the centering support piece 41 is arranged in the gap 14 and is connected with the housing assembly 1 ; Two opposite sides of the auxiliary diaphragm 42 are provided with two straight portions 421 extending away from each other. One straight portion 421 is connected to the centering support piece 41 , and the other straight portion 421 penetrates through the gap 14 and extends into the avoidance. The space 15 is connected to one end of the extension section 3222 away from the straight section 3221 .
  • the centering support piece 41 and the auxiliary diaphragm 42 of the balance component 4 are arranged in the cavity 13 of the housing component 1 and are located in the gap 14 between the magnetic circuit system 2 and the side wall of the cavity 13 , and is arranged opposite to the diaphragm 31 .
  • the centering support piece 41 includes an outer fixing portion 411 and an elastic portion 412 connected to the outer fixing portion 411 , and the outer fixing portion 411 of the centering support piece 41 is sandwiched between the housing 11 and the magnetic yoke 21 . , thereby improving the installation stability of the centering support piece 41 .
  • the elastic portion 412 of the centering support piece 41 is connected with one end of the extension section 3222 located in the gap 14 , which further improves the connection stability of the frame 32 .
  • the auxiliary diaphragm 42 includes a folded ring segment and two straight portions 421 integrally provided with the folded ring segment, Two straight portions 421 are provided on opposite sides of the ring segment.
  • a straight portion 421 of the auxiliary diaphragm 42 is connected to the outer fixing portion 411 of the centering support piece 41 and sandwiched between the outer fixing portion 411 and the housing 11 , thereby improving the installation stability of the auxiliary diaphragm 42 .
  • the other straight portion 421 of the auxiliary diaphragm 42 is located in the gap 14 and is connected to an end of the extension portion 3222 away from the body portion 321 , thereby further improving the connection stability of the frame 32 .
  • the balance assembly 4 composed of the centering support piece 41 and the auxiliary diaphragm 42 is arranged in the cavity 13, so that the vibration of the vibration film 31 is transmitted to the auxiliary vibration film 42 and the centering support piece by the frame 32
  • the elastic part 412 of 41 uses the auxiliary diaphragm 42 and the elastic part 412 to improve the swing of the vibration system 3, so as to avoid the vibration of the diaphragm 31 from swinging left and right during the vibration process, thereby affecting the sound production effect.
  • the centering support piece 41 is made of FPCB, that is, the outer fixing portion 411 and the elastic portion 412 of the centering support piece 41 are both made of FPCB.
  • the centering support pieces 41 include two, and the two centering support pieces 41 are symmetrically arranged;
  • the fixing part 411 and the elastic part 412 connected to the outer fixing part 411 .
  • Both ends of the elastic part 412 extend along the gap 14 into the avoidance space 15 , and are provided with a pad 413 , and the extension 3222 and the straight part 421 are connected to the pad 413 .
  • the speaker 100 includes two oppositely arranged long sides and two oppositely arranged short sides, and the two centering support pieces 41 are symmetrically arranged corresponding to the two short sides of the speaker 100 respectively.
  • the elastic portion 412 of each centering support piece 41 extends along the short side into the avoidance space 15 .
  • the auxiliary diaphragms 42 include four, and each auxiliary diaphragm 42 is disposed corresponding to an escape space 15 ; a straight portion 421 of each auxiliary diaphragm 42 is sandwiched between Between the outer fixing portion 411 and the housing assembly 1 , another straight portion 421 is sandwiched between the pad 413 and the extension portion 3222 .
  • the loudspeaker 100 is a rectangular ring, and an avoidance space 15 is formed between two adjacent side magnetic circuit parts 23, so that the avoidance space 15 is disposed corresponding to the four corner positions of the loudspeaker 100, so that the four auxiliary vibration
  • the membranes 42 are respectively disposed corresponding to the four corner positions of the speaker 100 , that is, each auxiliary diaphragm 42 is disposed corresponding to an avoidance space 15 .
  • the vibration system 3 of the loudspeaker 100 of the present invention is composed of a diaphragm 31, a dome 34, a frame 32 and a voice coil 33.
  • the dome 34 and the frame 32 are respectively bonded to the diaphragm 31, and the frame 32 is formed by the body part. 321 , a leg portion 322 and a connecting portion 323 .
  • the body portion 321 of the skeleton 32 and the bent section 3223 of the leg portion 322 are connected to the top diaphragm 31 and the centering support piece 41 and the auxiliary diaphragm 42 of the bottom balance assembly 4 .
  • the skeleton 32 can not only achieve the function of fixing the voice coil 33 and the diaphragm 31 , but also realize the connection between the voice coil 33 and the balance component 4 .
  • an escape space 15 is reserved between the two adjacent side magnetic circuit portions 23 of the magnetic circuit system 2 for the centering support piece 41 and the auxiliary diaphragm 42 of the balance assembly 4 .
  • the extension section 3222 and the bent section 3223 of the skeleton 32 are inserted into the avoidance space 15 between the side magnetic circuit portion 23 and the housing 11 .
  • the bent section 3223 of the frame 32 is connected and fixed with the centering support piece 41 and the inner bonding area of the auxiliary diaphragm 42, so that the frame 32 connects the upper and lower vibration systems as a whole.
  • the centering support piece 41 and the auxiliary diaphragm 42 of the balance assembly 4 are distributed on the short side of the loudspeaker 100, and the ability to effectively suppress the swing polarization of the vibration system 3 is better.
  • the skeleton 32, the centering support piece 41, and the auxiliary diaphragm 42 are located on the outside of the magnetic circuit system 2, which has little impact on the space of the magnetic circuit system 2, and it is easier and fully utilized the performance of the magnetic circuit, thereby preventing the vibration film 31 from swinging and polarizing.
  • a conductive connection can be achieved with the voice coil 32 through the skeleton 32 .
  • the present invention also provides an electronic terminal, the electronic terminal includes a device housing and a speaker 100, the device housing is provided with a cavity, and the speaker 100 is provided in the cavity.
  • the specific structure of the speaker 100 refers to the foregoing embodiments. Since the electronic terminal 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. .
  • the electronic terminal may be an electronic device, such as a mobile phone, a stereo, a computer, an earphone, a watch, a TV, or a tablet computer, etc., which is not limited herein.

Landscapes

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

Abstract

L'invention concerne un haut-parleur et un terminal électronique. Le haut-parleur comprend un ensemble boîtier, un système de circuit magnétique, un système de vibration et un ensemble balance. L'ensemble de boîtier est pourvu d'une cavité de logement ; le système de circuit magnétique est prévu dans la cavité de logement ; le système de vibration comprend une membrane, un dôme et une bobine qui sont prévus à l'opposé du système de circuit magnétique ; la bobine comprend une partie de corps et au moins une partie de jambe de support, la partie de corps définit un trou traversant et est reliée à la membrane, et la partie de jambe de support est pourvue d'une section droite reliée à la partie de corps et d'une section d'extension qui est courbée et s'étend vers le bas depuis un côté de la section droite faisant face au trou traversant ; la section droite s'étend vers la direction proche du système de circuit magnétique le long de la direction horizontale, et au moins une partie de la section droite est en contact avec le fond de la membrane pour supporter la membrane ; une extrémité de l'ensemble d'équilibre est connectée à l'ensemble de boîtier, et l'autre extrémité est connectée à une extrémité de la section d'extension éloignée de la section droite. La présente invention vise à fournir un haut-parleur qui peut élargir l'espace de vibration inférieur et améliorer efficacement la qualité de sortie du son et la performance acoustique du haut-parleur.
PCT/CN2021/135881 2020-12-29 2021-12-07 Haut-parleur et terminal électronique WO2022143027A1 (fr)

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CN202023255140.3U CN213938310U (zh) 2020-12-29 2020-12-29 扬声器和电子终端
CN202023255140.3 2020-12-29

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WO2022143027A1 true WO2022143027A1 (fr) 2022-07-07

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Cited By (2)

* Cited by examiner, † Cited by third party
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CN116095573A (zh) * 2022-07-29 2023-05-09 荣耀终端有限公司 内核及其装配方法、扬声器模组、电子设备
CN117440301A (zh) * 2023-12-18 2024-01-23 瑞声光电科技(常州)有限公司 扬声器单体及电子设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN213938310U (zh) * 2020-12-29 2021-08-10 歌尔股份有限公司 扬声器和电子终端

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Publication number Priority date Publication date Assignee Title
CN110351639A (zh) * 2019-06-26 2019-10-18 瑞声科技(新加坡)有限公司 一种扬声器
US20200045453A1 (en) * 2018-08-04 2020-02-06 AAC Technologies Pte. Ltd. Speaker Assembly
CN210781324U (zh) * 2019-10-11 2020-06-16 瑞声科技(新加坡)有限公司 扬声器
CN213938310U (zh) * 2020-12-29 2021-08-10 歌尔股份有限公司 扬声器和电子终端

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Publication number Priority date Publication date Assignee Title
US20200045453A1 (en) * 2018-08-04 2020-02-06 AAC Technologies Pte. Ltd. Speaker Assembly
CN110351639A (zh) * 2019-06-26 2019-10-18 瑞声科技(新加坡)有限公司 一种扬声器
CN210781324U (zh) * 2019-10-11 2020-06-16 瑞声科技(新加坡)有限公司 扬声器
CN213938310U (zh) * 2020-12-29 2021-08-10 歌尔股份有限公司 扬声器和电子终端

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116095573A (zh) * 2022-07-29 2023-05-09 荣耀终端有限公司 内核及其装配方法、扬声器模组、电子设备
CN116095573B (zh) * 2022-07-29 2023-11-07 荣耀终端有限公司 内核及其装配方法、扬声器模组、电子设备
CN117440301A (zh) * 2023-12-18 2024-01-23 瑞声光电科技(常州)有限公司 扬声器单体及电子设备
CN117440301B (zh) * 2023-12-18 2024-03-26 瑞声光电科技(常州)有限公司 扬声器单体及电子设备

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