WO2021237814A1 - Dispositif de génération de son - Google Patents

Dispositif de génération de son Download PDF

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Publication number
WO2021237814A1
WO2021237814A1 PCT/CN2020/095879 CN2020095879W WO2021237814A1 WO 2021237814 A1 WO2021237814 A1 WO 2021237814A1 CN 2020095879 W CN2020095879 W CN 2020095879W WO 2021237814 A1 WO2021237814 A1 WO 2021237814A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
rear shell
yoke
yoke body
cavity
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2020/095879
Other languages
English (en)
Chinese (zh)
Inventor
曹成铭
吴树文
吴立峰
沈凯华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Technologies Pte Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Pte Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Pte Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2021237814A1 publication Critical patent/WO2021237814A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the field of electro-acoustic conversion, in particular to a sound-producing device applied to portable mobile electronic products.
  • Sounding devices also known as speakers, are widely used in portable mobile electronic products, such as mobile phones, to convert audio signals into sound for playback.
  • the sounding devices have high loudness and amplitude.
  • the related art sounding device includes a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system with a magnetic gap.
  • the magnetic circuit system drives the vibration system to vibrate and produce sound
  • the vibration system includes The diaphragm of the basin frame and a voice coil fixed to the diaphragm and inserted in the magnetic gap to drive the diaphragm to vibrate and produce sound.
  • the related art sound device does not have a rear cavity structure or the rear cavity is an open structure, when used in portable mobile electronic products such as mobile phones, it will cause the problem of mobile phone shell vibration, resulting in poor user experience; and mobile phone space Due to the limited size, the sound emitting device cannot be designed into a speaker box structure with a back cavity in the prior art to overcome this problem.
  • the purpose of the utility model is to provide a sound device with simple structure, good acoustic performance and good user experience.
  • the present invention provides a sound-producing device, which includes a sound-producing monomer, the sound-producing monomer includes a basin frame, a vibration system and a magnetic circuit system respectively fixed to the basin frame and jointly enclosing an inner cavity ,
  • the vibration system includes a diaphragm fixed to the frame
  • the magnetic circuit system includes a yoke spaced opposite to the diaphragm
  • the yoke includes a yoke body spaced opposite to the diaphragm
  • the sound generating device further includes a rear shell fixed on the side of the yoke body away from the diaphragm, the rear shell and the yoke
  • the main body jointly enclose
  • the sound emitting device further includes a damping member attached to the yoke body and completely covering the leakage portion.
  • the sealing wall and the rear shell are made of metal materials.
  • the sealing wall or the rear shell is at least partially grounded.
  • the sound emitting device further includes a conductive member, one end of the conductive member is electrically connected to at least one of the sealing wall and the rear case, and the other end of the conductive member is used for grounding.
  • the conductive member is formed by extending at least one of the sealing wall and the rear case.
  • the sound emitting device further includes a conductive member, the conductive member includes two electrical pathways, one of the electrical pathways is used to connect the sounding monomer with an external electrical signal, and the other of the electrical pathways
  • the road is used to ground at least one of the sealing wall and the rear shell.
  • the sound emitting device further includes at least two positioning pieces, the two positioning pieces are connected to opposite sides or two diagonal corners of the sealing wall or the rear shell, and the positioning pieces are provided with penetrating through them.
  • the positioning piece is formed by extending the sealing wall or the rear shell outward.
  • the sound-producing unit further includes a front cover arranged on the side of the basin frame close to the diaphragm and enclosing a front acoustic cavity with the diaphragm, and the front cover is provided with a front cover along the vibration system The vibration direction penetrates through the through hole thereon, and the through hole connects the front acoustic cavity with the outside.
  • the sound generating device further includes a breathable damping member attached to the front cover, and the breathable damping member completely covers the through hole.
  • the part of the diaphragm fixed to the basin frame is provided with a ring-shaped sealing boss protruding toward the front cover, and the front cover is pressed on the sealing boss to form a seal.
  • the sound-emitting device further includes a sound-guiding shell covering a side of the sound-emitting monomer away from the rear shell, the sound-guiding shell having a sound-guiding cavity forming a side sound-emitting structure, and the sound-guiding cavity and the The diaphragm is connected.
  • the rear shell includes a rear shell plate spaced and opposed to the yoke body, and a rear shell plate that is bent and extended in the direction of the yoke body from the peripheral side of the rear shell plate and fixed to the yoke body in abutment.
  • the extension wall of the rear shell; the sounding device further includes a gas-permeable spacer located in the rear cavity, the gas-permeable spacer includes a spacer body arranged opposite to the rear shell plate, and a peripheral edge of the spacer body
  • the spacer extension part bent and extended toward the rear shell plate and the spacer fixing part bent and extended from the end of the spacer extension part away from the spacer body; the spacer extension part and the rear
  • the shell extension walls are arranged at intervals, and the spacer fixing part is fixed to the rear shell plate; the air-permeable spacer and the rear shell plate jointly enclose a powder filling space.
  • a side of the spacer body close to the yoke body is recessed in a direction away from the yoke body to form an escape step, and the escape step is arranged directly opposite to the leakage portion.
  • the yoke includes a yoke body spaced apart from the vibration system, a leakage part penetrating the yoke body, and a peripheral edge of the yoke body.
  • a ring-shaped sealing wall that is bent and extended along the basin frame in the direction close to the vibration system, and the sealing wall is attached and fixed to the outer peripheral side of the basin frame and seals the inner cavity through the yoke itself
  • the structure of the sealed inner cavity is not only simple in structure, and small in overall size increase along the direction of vibration, but also suitable for terminals with small installation space; at the same time, a rear shell is provided on the side of the yoke body away from the vibration system, The back shell and the yoke body jointly enclose a closed back cavity, the leaking part communicates the inner cavity with the back cavity, and the closed back cavity structure makes the sound device suitable for use in a mobile terminal Vibration absorption avoids the occurrence of shell vibration and makes the user experience better.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the sound generating device of the present invention.
  • Figure 2 is an exploded schematic diagram of a part of the three-dimensional structure of the sound generating device of the present invention
  • Figure 3 is a sectional view taken along the line A-A in Figure 1;
  • Figure 4 is a cross-sectional view taken along line B-B in Figure 1;
  • FIG. 5 is a schematic diagram of the structure of adding conductive elements in FIG. 3;
  • Fig. 6 is a schematic structural diagram of another derivative embodiment of Fig. 5;
  • FIG. 7 is a schematic structural diagram of another embodiment in which a conductive member is added in FIG. 5;
  • FIG. 7 is a schematic structural diagram of another embodiment in which a conductive member is added in FIG. 5;
  • Figure 8 is a cross-sectional view taken along line C-C in Figure 7;
  • FIG. 9 is a schematic structural view of the embodiment in FIG. 3 in which a sound guide shell is added to form a side sound emitting structure;
  • Fig. 10 is a schematic diagram of an embodiment of adding a breathable spacer in Fig. 4;
  • FIG. 11 is a schematic structural diagram of a derivative embodiment of the embodiment shown in FIG. 10;
  • Fig. 12 is a schematic structural view of the diaphragm of the sound emitting device shown in Fig. 1 provided with a sealing boss;
  • FIG. 13 is a schematic structural diagram of an embodiment in which a positioning piece is added to the sound generating device shown in FIG. 1;
  • FIG. 13 is a schematic structural diagram of an embodiment in which a positioning piece is added to the sound generating device shown in FIG. 1;
  • FIG. 14 is a schematic structural diagram of a derivative embodiment of the embodiment shown in FIG. 13.
  • the present invention provides a sound emitting device 100, which includes a sound emitting unit 10, and the sound emitting unit 10 includes a basin frame 1, a vibration system 2, a magnetic circuit system 3, and a rear shell 4.
  • the vibration system 2 and the magnetic circuit system 3 are respectively fixed on opposite sides of the basin frame 1 and jointly enclose an inner cavity 101.
  • the vibration system 2 includes a diaphragm 21 fixed to the basin frame 1.
  • the magnetic circuit system 3 drives the vibration system 2 to vibrate and produce sound.
  • the magnetic circuit system 3 includes a magnetic yoke 31 opposed to the diaphragm 21 and a magnetic steel 32 fixed to the magnetic yoke 31.
  • the yoke 31 includes a yoke body 311 that is spaced apart from the diaphragm 2, a leakage portion 312 penetrating the yoke body 311, and the outer edge of the yoke body 311 is approached along the basin 1
  • a ring-shaped sealing wall 313 that is bent and extended in the direction of the vibration system 2 is attached and fixed to the outer peripheral side of the basin frame 1 and seals the inner cavity 101 so as to pass through the yoke 31
  • Its own structural design makes the inner cavity 101 of the sound-producing monomer 10 form a seal, omitting an additional structure for sealing, and reducing the assembly process.
  • the yoke body 311 and the diaphragm 21 are respectively fixed on opposite sides of the basin frame 1.
  • the so-called outer periphery in this embodiment means that when the yoke body 311 is arranged in a ring shape, the yoke body 311 has an outer periphery and an inner periphery, and the sealing wall 313 is formed by the outer periphery of the yoke body 311. When the yoke body 311 is flat, the sealing wall 313 extends from the periphery of the yoke body 311.
  • the rear shell 4 is covered and fixed on the side of the yoke body 311 away from the vibration system 2.
  • the rear housing 4 and the yoke body 311 jointly enclose a closed rear cavity 102, and the leakage portion 312 connects the inner cavity 101 with the rear cavity 102.
  • the formation of the rear cavity 102 effectively improves the acoustic performance of the sound emitting device 100, especially low-frequency acoustic performance, and the rear cavity 102 is used for vibration absorption, so that the sound emitting device 100 is not used in electronic products such as mobile terminals. It will cause the shell vibration phenomenon of electronic products such as mobile terminals, which effectively increases the user experience effect of customers.
  • the rear shell 4 is provided with a leakage hole 41 penetrating therethrough, and the leakage hole 41 connects the rear cavity 102 with the outside to balance the sound pressure in the rear cavity 102.
  • the sound generating device 100 further includes a damping member 5 attached to the yoke body 311 and completely covering the leakage portion 312 for adjusting the damping of the leakage portion 312 and improving the acoustic performance.
  • the rear shell 4 and the sealing wall 313 are made of metal, ceramic or glass materials.
  • the rear housing 4 and the sealing wall 313 are made of metal materials. This arrangement can be made thinner with the same structural strength, so that the size of the sound emitting device 100 in the vibration direction perpendicular to the diaphragm 21 can be minimized.
  • the rear case 4 is covered on the yoke body 311, so that the size of the rear cavity 102 along the vibration direction perpendicular to the vibration system 2 does not exceed the size of the sound emitting device 100 itself, which is more suitable for mobile terminals with small lateral space.
  • the technical problems to be solved by the present invention can be realized, the number of components is effectively reduced, the structure is simplified, and the assembly efficiency is improved.
  • the sound-producing unit 10 also includes a front cover 7 which is arranged on the side of the basin frame 1 close to the diaphragm 21 and encloses the front sound cavity 103 with the diaphragm 21, and the front cover 7 is provided with an edge
  • the vibration direction of the diaphragm 21 penetrates the through hole 71 thereon, and the through hole 71 connects the front acoustic cavity 103 with the outside.
  • the setting of the front cover 7 effectively improves the mid- and high-frequency acoustic performance.
  • the sound generating device 100 further includes a breathable damping member 8 attached to the front cover 7, and the breathable damping member 8 completely covers the through hole 71.
  • the damping of the breathable damping member 8 can be adjusted in the other direction to adjust the mid-frequency and high-frequency performance of the sound generating device 100.
  • the through holes 71 include a plurality of and are arranged in an array to improve sound stability and balance.
  • the part of the diaphragm 21 fixed to the basin frame 1 is provided with a shape protruding toward the front cover 7
  • the ring-shaped sealing boss 211 when assembling, the front cover 7 is pressed on the sealing boss 211 and the sealing boss 211 is compressed to form a seal, and the sealing reliability is better.
  • the sealing wall 313 or the rear housing 4 is at least partially grounded.
  • This structure combines the sealing wall 313 and the rear shell 4 on the basis that both are made of metal materials, so as to realize the shielding effect of the post-hair cavity and improve the stability.
  • the arrangement of the sealing wall 313 or the rear shell 4 made of metal material can be designed to be thinner while meeting the structural strength, thereby further reducing the lateral size of the sound emitting device 100 along the direction perpendicular to the vibration direction.
  • FIG. 5 is a schematic diagram of the structure of adding conductive elements in FIG. 3.
  • the sealing wall 4313 and the rear shell 404 are both made of metal materials.
  • the sound emitting device 400 further includes a conductive member 6, one end of the conductive member 6 is connected to at least one of the sealing wall 4313 and the rear case 404, and the other end of the conductive member 6 is used for grounding, thereby forming
  • the shielding effect prevents the sound emitting device 400 from being subjected to external electromagnetic interference, and has better working reliability.
  • FIG. 6 is a schematic diagram of the three-dimensional structure of another derivative embodiment of FIG. 5. That is, in the sound generating device 500, the conductive member 56 and the sealing wall 5313 or the rear shell 54 are an integral structure. That is, the conductive member 56 is formed by extending the sealing wall 5313, or the conductive member 56 is formed by extending the rear shell 54. For example, the conductive member 56 and the rear shell 54 are integrally formed.
  • the integrated structure design reduces the number of components and improves assembly efficiency.
  • FIG. 7 is a schematic structural diagram of another embodiment in which a conductive member is added in FIG. 5.
  • the difference between this embodiment and the embodiment shown in FIG. 3 lies in the structure and function of the conductive member.
  • the sound emitting device 600 further includes a conductive member 66.
  • the conductive member 66 includes two mutually insulated electrical pathways.
  • the sounding unit 610 is powered; the other electrical channel is used to ground at least one of the sealing wall 6313 and the rear shell 64 to form a shield for the sounding unit 610.
  • the conductive member 66 is used to form a shielding effect together with the rear shell 64 and the sealing wall 6313, and is also used to supply power to the sound generating unit 610, which has a simpler structure and can achieve dual functions.
  • the conductive member 66 is an FPC structure. As shown in FIGS. 7-8, the conductive member 66 includes a first arm 661 connected to the yoke 631, and is formed by opposite ends of the first arm 661.
  • the second arm 662 extending in the direction of the basin frame 61, the third arm 663 extending in the direction away from the sealing wall 6313 from the first arm 661, and the vibration direction of the diaphragm 621 by the first arm 661
  • the fourth arm 664 bent and extended toward the rear shell 64 and the fourth arm 664 bent and extended from the end of the fourth arm 664 in the direction perpendicular to the vibration direction of the diaphragm 621 and fixed to the rear shell 64 Five arms 665.
  • the first arm 661 is electrically connected to the magnetic yoke 631 or the rear housing 64
  • the second arm 662 is electrically connected to the sound unit 610
  • the third arm 663 is used to connect external electrical signals.
  • the fifth arm 665 is used for grounding.
  • the second arm 662 is fixed to the basin frame 61 and is electrically connected to the vibration system 62
  • the third arm 663 is used for connecting external electrical signals
  • the fifth arm 665 is used for grounding. So as to realize the function of providing electric signal for the vibration system, and also realize the shielding function.
  • the first arm 661, the fourth arm 664, and the fifth arm 665 jointly connect the rear housing 64 or the sealing wall 6313 to the ground, forming an electrical path for shielding the sounding monomer 610; the first The arm 661, the second arm 662, and the third arm 663 jointly realize the electrical connection between the sound emitting unit 610 and the external electrical signal, which is realized as another electrical path through which the sound emitting unit 610 communicates with the external electrical signal.
  • FIG. 9 is a schematic structural diagram of the embodiment in FIG. 3 in which a sound conducting shell is added to form a side sound emitting structure.
  • the main difference is that the sound emitting device is formed from the front side sounding structure to the side sounding structure.
  • the sound-emitting device 800 further includes a sound-conducting shell 9 covering one end of the sound-emitting monomer 810 away from the rear shell 84, and the sound-conducting shell 9 has a sound-guiding cavity 90 forming a side sound-emitting structure 91, and the sound-guiding cavity It is connected to the vibrating membrane 821 of 90.
  • the side sound structure 91 can better guide sound, which is convenient for use when the front sound is blocked, and has higher flexibility in use.
  • the sound conducting shell 9 includes a sound conducting shell plate 901 arranged at intervals on the side of the vibrating membrane 821 away from the magnetic circuit system 83, and a sound conducting shell plate 901 extending from the periphery of the sound conducting shell plate 901 to the vibrating membrane 821
  • the sound guide shell extension wall 902 is bent and extended in the direction, the sound guide shell 9 and the diaphragm 821 jointly enclose the sound guide cavity 90, and the side sound emitting structure 91 is provided through the sound guide shell extension wall 902,
  • the side sound structure 91 connects the sound guide cavity 90 with the outside to form a side sound, which is convenient for flexible use of different installation positions.
  • the sound guide cavity 90 can be directly connected with the diaphragm 821 (that is, without the front cover 807 structure), or the diaphragm 812 can first communicate with the front sound cavity 8103, and then communicate with the sound guide cavity 90 through the through hole 871. In order to achieve indirect connectivity, this is all feasible.
  • FIG. 10 is a schematic diagram of an embodiment in which a breathable spacer is added in FIG. 4.
  • the rear shell 94 includes a rear shell plate 941 spaced apart and opposed to the yoke body 9311, and a peripheral side of the rear shell plate 941 is bent and extended in the direction of the yoke body 9311 and abutted and fixed.
  • the sound emitting device 900 further includes a gas-permeable spacer 99 located in the rear cavity 9102, and the gas-permeable spacer 99 includes a space opposite to the rear shell plate 941
  • the spacer body 991 is provided with a spacer extension part 992 bent and extended in the direction of the rear shell plate 941 from the periphery of the spacer body 991, and a spacer extension part 992 away from the spacer body 991
  • the spacer fixing portion 993 is bent and extended toward the rear shell extension wall 942 at one end.
  • the spacer extension part 992 is spaced apart from the rear shell extension wall 942, and the spacer fixing part 993 is fixed to the rear shell plate 941.
  • the air-permeable spacer 99 and the rear shell 94 jointly enclose a powder filling space 990.
  • the powder filling space 990 is used to fill sound-absorbing particles to form a D-BASS virtual sound cavity, which further improves the acoustic performance.
  • the spacer extension 992 and the rear housing extension wall 942 are spaced apart so that the air flow in the rear cavity 9102 is smoother and the acoustic performance is better.
  • FIG. 11 is a schematic structural diagram of a derivative embodiment of the embodiment shown in FIG. 10.
  • the side of the spacer body 1991 close to the yoke body 1311 is recessed in a direction away from the yoke body 1311 to form an escape step 1994, and the escape step 1994 is in line with the leakage portion 1312 Pair set.
  • This structural arrangement can make the leakage of the inner cavity 1101 of the sound emitting device 1000 smoother, thereby improving the sound emitting performance.
  • FIG. 13 is a schematic structural diagram of an embodiment in which a positioning piece is added to the sound emitting device shown in FIG. 1.
  • the sounding device 1100 further includes at least two positioning pieces 88 which are connected to the sealing wall 11313 or the rear shell 114 respectively.
  • One end of the positioning piece 88 away from the sealing wall 11313 or the rear housing 114 is provided with a positioning hole 881 penetrating therethrough, which is used to fix and position the sound emitting device 1100 and the application terminal.
  • the positioning hole 881 is fixed on the entire terminal device, which is simple and convenient, and the positioning sheet 88 is provided with at least two positioning pieces 88 to form a positioning fixation more effectively.
  • the two positioning pieces 88 are connected to the opposite sides or two diagonal corners of the sealing wall 11313 or the rear shell 114, and the symmetrical arrangement makes the sounding device 1100 and the whole terminal have a better positioning and fixing effect.
  • the positioning piece 88 is fixed by welding, for example, the rear housing 114 is fixed by welding, that is, the positioning piece 88 and the rear housing 114 are a separate structure of two devices.
  • the positioning piece 88 can also be used for grounding at the same time to form a shield for the rear shell 114.
  • the positioning piece 88 is connected to the two opposite corners of the sealing wall 11313 or the rear shell 114.
  • FIG. 14 is a schematic structural diagram of a derivative embodiment of the embodiment shown in FIG. 13.
  • the positioning piece 1288 is formed by the sealing wall 12313 or the rear shell 124 extending outward, that is, the positioning piece 1288 and
  • the sealing wall 12313 or the rear shell 124 is an integrally formed structure, for example, the positioning sheet 1288 and the rear shell 124 are integrally formed.
  • the molding is simple, the number of components is reduced, and the assembly efficiency is improved.
  • the positioning piece 88 is connected to opposite sides of the sealing wall 12313 or the rear shell 114.
  • the yoke includes a yoke body spaced apart from the vibration system, a leakage part penetrating the yoke body, and a peripheral edge of the yoke body.
  • a ring-shaped sealing wall that is bent and extended along the basin frame in the direction close to the vibration system, and the sealing wall is attached and fixed to the outer peripheral side of the basin frame and seals the inner cavity through the yoke itself
  • the structure of the sealed inner cavity is not only simple in structure, and small in overall size increase along the direction of vibration, but also suitable for terminals with small installation space; at the same time, a rear shell is provided on the side of the yoke body away from the vibration system, The back shell and the yoke body jointly enclose a closed back cavity, the leaking part communicates the inner cavity with the back cavity, and the closed back cavity structure makes the sound device suitable for use in a mobile terminal Vibration absorption avoids the occurrence of shell vibration and makes the user experience better.

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

Abstract

L'invention concerne un dispositif de génération de son, comprenant un système de vibration et un système de circuit magnétique ; le système de circuit magnétique comprend une culasse qui est espacée du système de vibration et opposée à celui-ci et un acier magnétique qui est fixé à la culasse, la culasse comprend un corps de culasse qui est espacé du système de vibration et opposé à celui-ci, une partie de fuite qui pénètre dans le corps de culasse, et une paroi d'extension annulaire qui se courbe et s'étend depuis le corps de culasse vers une direction éloignée du système de vibration, la paroi d'extension étant située sur la périphérie de l'acier magnétique le long de la direction de vibration du système de vibration. Le dispositif de génération de son comprend en outre une plaque de recouvrement qui recouvre et est fixée à une extrémité de la paroi d'extension éloignée du corps de l'étrier ; la plaque de recouvrement, la paroi d'extension et le corps de l'étrier s'enferment conjointement pour former une cavité arrière étanche, et la partie de fuite communique avec la cavité arrière ; et l'étrier est également pourvu d'un trou de fuite qui y pénètre, et le trou de fuite met la cavité arrière en communication avec l'extérieur. Par rapport à la technologie connexe, le dispositif de génération de sons du présent modèle d'utilité présente une structure simple, une excellente performance acoustique et un bon effet d'expérience utilisateur.
PCT/CN2020/095879 2020-05-29 2020-06-12 Dispositif de génération de son Ceased WO2021237814A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202020964966.8U CN212628374U (zh) 2020-05-29 2020-05-29 发声器件
CN202020964966.8 2020-05-29

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Publication Number Publication Date
WO2021237814A1 true WO2021237814A1 (fr) 2021-12-02

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WO (1) WO2021237814A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120751324A (zh) * 2025-08-26 2025-10-03 歌尔股份有限公司 发声装置和电子设备

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CN107071667A (zh) * 2017-05-17 2017-08-18 广东欧珀移动通信有限公司 扬声器组件及移动终端
CN108322871A (zh) * 2018-02-11 2018-07-24 瑞声科技(新加坡)有限公司 微型发声器和扬声器箱
CN109040926A (zh) * 2018-08-01 2018-12-18 歌尔股份有限公司 发声器件及便携终端
CN208638627U (zh) * 2018-08-03 2019-03-22 瑞声科技(新加坡)有限公司 扬声器
CN110278517A (zh) * 2019-07-16 2019-09-24 瑞声光电科技(常州)有限公司 扬声器箱

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107071667A (zh) * 2017-05-17 2017-08-18 广东欧珀移动通信有限公司 扬声器组件及移动终端
CN108322871A (zh) * 2018-02-11 2018-07-24 瑞声科技(新加坡)有限公司 微型发声器和扬声器箱
CN109040926A (zh) * 2018-08-01 2018-12-18 歌尔股份有限公司 发声器件及便携终端
CN208638627U (zh) * 2018-08-03 2019-03-22 瑞声科技(新加坡)有限公司 扬声器
CN110278517A (zh) * 2019-07-16 2019-09-24 瑞声光电科技(常州)有限公司 扬声器箱

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN120751324A (zh) * 2025-08-26 2025-10-03 歌尔股份有限公司 发声装置和电子设备

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