WO2022007026A1 - 扬声器装置及移动终端设备 - Google Patents

扬声器装置及移动终端设备 Download PDF

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Publication number
WO2022007026A1
WO2022007026A1 PCT/CN2020/104689 CN2020104689W WO2022007026A1 WO 2022007026 A1 WO2022007026 A1 WO 2022007026A1 CN 2020104689 W CN2020104689 W CN 2020104689W WO 2022007026 A1 WO2022007026 A1 WO 2022007026A1
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WO
WIPO (PCT)
Prior art keywords
fixed
ring
magnetic
casing
fixing
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PCT/CN2020/104689
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English (en)
French (fr)
Inventor
肖波
令狐荣林
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
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Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022007026A1 publication Critical patent/WO2022007026A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • 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 present invention relates to the field of sound and electricity, and in particular, to a speaker device and a mobile terminal device using the speaker device.
  • the speaker device in the related art includes a casing and a speaker unit housed in the casing.
  • the loudspeaker unit includes a vibration system, a magnetic circuit system that drives the vibration system to vibrate and sound, and a fixing ring that fixes the magnetic circuit system in the casing.
  • the vibration system includes A vibrating membrane that forms a receiving space with the housing and a voice coil that drives the vibrating membrane to vibrate.
  • the vibrating membrane includes a middle portion, a ring portion and a holding portion extending outward from the outer periphery of the middle portion in turn, and an outer periphery of the self-retaining portion.
  • the extension part is formed by bending and extending, the holding part is fixed on the fixing ring, and the extension part is sandwiched between the fixing ring and the casing.
  • this kind of speaker device not only easily causes the air in the accommodation space to leak from the gap between the extension part and the casing, but also easily causes the gas outside the mobile terminal device to leak from the holding part and the outer casing when the speaker device is applied to the mobile terminal device.
  • the connection of the housing enters the mobile terminal device.
  • the purpose of the present invention is to provide a speaker device and a mobile terminal device using the speaker device, the speaker device and the mobile terminal device using the speaker device can ensure the airtightness of the accommodation space of the speaker device.
  • the present invention provides a loudspeaker device, comprising a casing with a receiving space and a loudspeaker unit accommodated in the casing, wherein the loudspeaker unit includes a fixing ring fixed on the casing, a loudspeaker unit fixed on the casing
  • the vibration system includes a diaphragm for vibrating and sounding and fixed to the fixed ring, the diaphragm includes a middle part located at a central position, a periphery from the middle part A folded ring portion formed by an edge extending outward, a holding portion extending outward from the outer peripheral edge of the folded ring portion, and an extension portion formed by bending and extending from the outer peripheral edge of the holding portion, the holding portion is fixed to the fixing portion
  • the ring is away from the surface of the magnetic circuit system along the vibration direction
  • the housing includes an inner wall surrounding the receiving space
  • the fixing ring is abutted and fixed on the inner wall
  • the first convex ring is extruded and fixed in the first sealing groove.
  • the speaker device further includes a casing that is pressed and arranged on a surface of the holding portion away from the fixing ring, and the surface of the holding portion facing away from the fixing ring protrudes toward the casing to form a surrounding
  • the second convex ring provided on the folded ring portion, the surface of the casing facing the holding portion is recessed in the direction away from the holding portion to form a second sealing groove corresponding to the second convex ring, the second sealing groove is formed.
  • the convex ring is received and fixed in the second sealing groove.
  • the second convex ring is extruded and fixed in the second sealing groove.
  • the magnetic circuit system includes a magnetic yoke fixed relative to the housing, a main magnetic part fixed on the side of the magnetic yoke facing the diaphragm, and a secondary magnetic part arranged around the main magnetic part, the The main magnetic part and the secondary magnetic part are spaced apart to form a magnetic gap, and a voice coil is inserted into the magnetic gap.
  • the secondary magnetic portion includes a plurality of secondary magnets fixed on the side of the yoke facing the vibrating film and arranged around the main magnetic portion, and a plurality of secondary magnets covered on the plurality of secondary magnets away from the yoke splint on one side.
  • the vibration system further includes a support device spaced from the holding portion along the vibration direction, one end of the support device is sandwiched between the fixing ring and the housing, and the other end of the support device is connected to the frame through the frame. the diaphragm connection.
  • the supporting device includes a flexible circuit board and an auxiliary diaphragm
  • the flexible circuit board includes a first fixing part fixed relative to the fixing ring, a second fixing part fixed relative to the frame, and connecting the first fixing part.
  • the elastic connecting part of the fixing part and the second fixing part and the pad part extending from the second fixing part; the outer edge of the auxiliary diaphragm is fixed on the first fixing part;
  • the inner edge of the membrane is fixed on the second fixing part, wherein a first pad connected to an external circuit is formed on the first fixing part, and an electrical connection with the voice coil is formed on the pad part of the second pad.
  • the middle part has a cut hole, and a reinforcing plate is arranged in the cut hole; a second connection part formed by the extension of the magnetic circuit system and a third connection part spaced from the second connection part, the voice coil is fixed on the side of the second connection part away from the first connection part, The supporting device is fixed on a side of the third connecting portion away from the first connecting portion.
  • the housing is provided with an isolation component spaced from the vibrating membrane along the vibration direction, the isolation component divides the accommodation space into a first cavity and a second cavity, and the isolation component includes and The support ring fixed by the magnetic yoke and the ventilation spacer fixed on the support ring and the magnetic yoke, a ventilation channel is formed between the support ring and the magnetic yoke, the first cavity and the The second cavity is in airflow communication with the ventilating channel through the ventilating spacer, and the outer shell protrudes into the first cavity to form a protrusion supporting the support ring, wherein the isolation assembly and the shell The first cavity is formed by enclosing, and the second cavity is formed by enclosing the diaphragm, the housing and the isolation component.
  • a side of the magnetic yoke away from the diaphragm is fixedly connected to the air-permeable spacer.
  • a perforation extending along the vibration direction is formed through the yoke and the main magnetic part, and the permeable spacer covers the perforation.
  • the housing includes a main body, a first bending portion formed by bending and extending from an edge of the main body in a direction away from the voice coil, and a first bending portion away from the main body from the first bending portion.
  • a second bending part formed by bending and extending one end, wherein the protrusion is located on the main body part, the first bending part is located on the side of the fixing ring away from the holding part, and the extending part It is sandwiched between the fixing ring and the second bending part.
  • the present invention further provides a mobile terminal device, comprising the above-mentioned speaker device, and the casing of the speaker device is the casing of the mobile terminal device.
  • the speaker device of the present invention and the mobile terminal device using the speaker device are formed by protruding and forming a first convex ring surrounding the fixing ring on the side of the extending portion facing the housing, and A first sealing groove is formed on the inner wall of the casing 1, the first convex ring is accommodated and fixed in the first sealing groove, and the first convex ring is sealed with the first seal under the action of the clamping force of the fixing ring and the casing
  • the groove forms a sealed connection, so that the airtightness of the accommodation space of the speaker device can be ensured.
  • FIG. 1 is an exploded view of a preferred embodiment of the speaker device of the present invention.
  • FIG. 2 is an enlarged view of part a of the speaker device shown in FIG. 1 .
  • FIG. 3 is a schematic structural diagram of a flexible circuit board in the speaker device shown in FIG. 1 .
  • FIG. 4 is a schematic structural diagram of a casing in the speaker device shown in FIG. 1 .
  • FIG. 5 is a schematic structural diagram of a skeleton in the speaker device shown in FIG. 1 .
  • FIG. 6 is a perspective view of the speaker device shown in FIG. 1 after being assembled.
  • FIG. 7 is a cross-sectional view of the speaker device shown in FIG. 6 along the direction A-A.
  • FIG. 8 is an enlarged view of part b of the speaker device shown in FIG. 7 .
  • FIG. 9 is a cross-sectional view of the speaker device shown in FIG. 6 along the B-B direction.
  • FIG. 10 is a schematic structural diagram of an outer casing and a cabinet in the speaker device shown in FIG. 9 .
  • a speaker device includes a housing 100 , a housing 1 having a housing space 10 , and a speaker unit 2 housed in the housing 1 .
  • the housing 1 includes a housing space 10 enclosed by an enclosure 10 . the inner wall 151.
  • the speaker unit 2 includes a fixed ring 5 fixed in the housing 1 , a vibration system 3 and a magnetic circuit system 4 fixed on the fixed ring 5 .
  • the vibration system 3 includes a diaphragm 31 that vibrates and emits sound and is fixed to the fixed ring 5 and a voice coil 33 that drives the diaphragm 31 to vibrate.
  • the diaphragm 31 includes a middle portion 311 located in the center, a ring portion 313 extending outward from the outer periphery of the middle portion 311 , a holding portion 315 extending outward from the outer periphery of the ring portion 313 , and An extension portion 317 is formed by bending and extending from the outer periphery of the holding portion 315 .
  • the holding portion 315 is fixed to the surface of the fixing ring 5 away from the magnetic circuit system 4 along the vibration direction X.
  • the extending portion 317 is sandwiched between between the fixing ring 5 and the inner wall 151 of the housing 1 .
  • a first convex ring 318 surrounding the fixing ring 5 is formed on the surface of the extending portion 317 toward the inner wall 151 protruding toward the inner wall 151 .
  • the inner wall 151 is recessed in a direction away from the extending portion 317 to form a first sealing groove 1A, and the first protruding ring 318 is received and fixed in the first sealing groove 1A.
  • the first convex ring 318 is accommodated and fixed in the first sealing groove 1A, and is located between the fixing ring 5 and the fixing ring 5 .
  • the first convex ring 318 forms a sealing connection with the first sealing groove 1A, that is, the first sealing groove 1A is pressed and fixed in the first sealing groove 1A.
  • the casing 100 is press-fitted on a surface of the holding portion 315 away from the fixing ring 5 , and the surface of the holding portion 315 facing away from the fixing ring 5 faces the casing 100 .
  • the bulge is formed with a second convex ring 319 disposed around the folded ring portion 313 .
  • the surface of the casing 100 facing the holding portion 315 is recessed in the direction away from the holding portion 315 to form a second sealing groove 100A corresponding to the second convex ring 319 , and the second convex ring 319 is accommodated and fixed on the The second sealing groove 100A.
  • the second convex ring 319 forms a sealing connection with the second sealing groove 100A, that is, the first
  • the two protruding rings 319 are extruded and fixed in the second sealing groove 100A, so as to ensure the air tightness between the casing 100 and the holding portion 315 .
  • the magnetic circuit system 4 includes a magnetic yoke 41 fixed to the housing 1 , a main magnetic portion 43 fixed on the side of the magnetic yoke 41 facing the diaphragm 31 , and a secondary magnetic portion 45 arranged around the main magnetic portion 43 .
  • the auxiliary magnetic parts 45 are arranged at intervals to form a magnetic gap 4A, and the voice coil 33 is inserted into the magnetic gap 4A.
  • the main magnet portion 43 includes a main magnet 431 fixed on the side of the yoke 41 facing the diaphragm 31 and a pole core 433 fixed on the side of the main magnet 431 away from the yoke 41 .
  • the magnetic flux in the magnetic gap 4A can be improved by the magnetic permeability of the pole core 433 .
  • the main magnet 431 may be a magnetic steel or a natural lodestone. In this embodiment, preferably, the main magnet 431 is a magnetic steel.
  • the secondary magnetic portion 45 includes a plurality of secondary magnets 451 fixed on the side of the yoke 41 facing the vibrating film 31 and arranged around the main magnetic portion 43 , and covered on the plurality of secondary magnets 451 away from all the secondary magnets 451 .
  • the clamping plate 453 on the side of the yoke 41 is described.
  • the secondary magnet 451 may be a magnetic steel or a natural lodestone. In this embodiment, preferably, the secondary magnet 451 is a magnetic steel.
  • the clamping plate 453 is made of a magnetic conductive material.
  • the magnetic flux in the magnetic gap 4A can be improved by the magnetic permeability of the clamping plate 453, so that the acoustic performance of the speaker device can be improved.
  • the splint can also be made of non-magnetic conductive material.
  • the pole core 433 is located in the through hole of the clamping plate 453 and is located in the same horizontal plane as the clamping plate 453 .
  • the main magnetic part 43 has a rectangular structure as a whole, and four auxiliary magnets 451 are provided, wherein two of the auxiliary magnets 451 are along the main magnetic part 43 .
  • the short axis sides are arranged at intervals, and the other two auxiliary magnets 451 are arranged at intervals along the long axis sides of the main magnet portion 43 .
  • the above-mentioned structures of the main magnetic portion 43 and the secondary magnetic portion 45 are not limited to this.
  • the main magnetic part 43 may only include the main magnet; the main magnet 331 and the auxiliary magnet 451 may both be formed by stacking a plurality of magnetic steels along the vibration direction X, and in the vibration direction X, adjacent A pole core can also be arranged between the two magnets.
  • the housing 1 is provided with an isolation component 6 spaced from the diaphragm 31 along the vibration direction X, and the isolation component 6 divides the accommodation space 10A into a first cavity 10B and a second cavity 10C.
  • the first cavity 10B is formed by the isolation component 6 and the casing 1
  • the second cavity 10C is formed by the diaphragm 31 , the casing 1 and the isolation component 6 .
  • the isolation assembly 6 includes a support ring 61 fixed with the magnetic yoke 41 and a ventilating spacer 63 fixed on the support ring 61 and the magnetic yoke 41 , between the support ring 61 and the magnetic yoke 41 .
  • a ventilation channel 4B is formed, the first cavity 10B and the second cavity 10C can be in airflow communication with the ventilation channel 4B through the ventilation spacer 63 , and the housing 1 is connected to the first cavity 10B.
  • the inner protrusions form bumps 7 supporting the support ring 61 .
  • a ventilation channel 4B is formed between the support ring 61 and the yoke 41 .
  • the ventilation channel 4B By arranging the ventilation channel 4B, the first cavity 10B and the second cavity 10C can be in airflow communication through the ventilation partition 63 .
  • the magnetic circuit system 4 can be fixed in the casing 1 through the cooperation of the fixing ring 5 , the support ring 61 and the protrusion 7 , and this matching structure is not only simple in structure and convenient for the assembly of the speaker device , and the accommodating space 10A is divided into a first cavity 10B and a second cavity 10C by the isolation assembly 6 , and the first cavity 10B and the second cavity 10C pass through the isolation assembly 6
  • the ventilating spacer 63 can be in air communication, so that the first cavity 10B can be filled with sound-absorbing material (not shown) to improve the acoustic performance of the speaker device.
  • the two ends of the yoke 41 along the short axis direction of the voice coil 33 are fixed to the support ring 61 , and the two ends along the long axis direction of the voice coil 33 are connected to the support ring 61 .
  • the rings 61 are spaced to form the ventilation channels 4B.
  • the side of the magnetic yoke 41 away from the vibrating membrane 31 is fixedly connected to the air-permeable spacer 63 .
  • the yoke 41 and the main magnetic part 43 are provided with through holes 4C extending along the vibration direction X, and the ventilation spacers 63 cover the through holes 4C.
  • the perforations 4C By arranging the perforations 4C, the air flow volume during the air flow exchange between the first cavity 10B and the second cavity 10C can be increased, thereby helping to improve the acoustic performance of the speaker device. It can be understood that, in other embodiments, the through holes may not be provided on the yoke 41 and the main magnetic portion 43 .
  • the sound-absorbing material may be sound-absorbing cotton, sound-absorbing particles, sound-absorbing powder, and the like.
  • the sound-absorbing material is sound-absorbing particles or/and sound-absorbing powder.
  • a position of the casing 1 corresponding to the first cavity 10B is provided with a connection with the first cavity 10B.
  • a sealing cover 1C for sealing the powder filling hole 1B is also fixed on the casing 1 .
  • the protruding blocks 7 are formed by stamping the casing 1 ; the protruding blocks 7 are provided with a plurality of them, and the protruding blocks 7 are arranged at intervals. It can be understood that, in other embodiments, the bumps 7 can also be arranged in a ring structure.
  • the housing 1 includes a main body portion 11 , a first bending portion 13 formed by bending and extending from the edge of the main body portion 11 in a direction away from the voice coil 33 , and a first bending portion 13 away from the voice coil 33 .
  • One end of the main body part 11 is bent and extended to form a second bending part 15 , wherein the protrusion 7 is located on the main body part 11 , and the first bending part 13 is located in the fixing ring 5 away from the holding
  • the extending portion 317 is sandwiched between the fixing ring 5 and the second bending portion 15 .
  • the casing 1 is open at one end, that is, the second bending portion 15 is surrounded by an opening, and the diaphragm 31 is fixed on the second bending portion 15 and covers the casing 1 .
  • the opening, that is, the speaker device in this embodiment is without a front cover.
  • the vibration system 3 further includes a support device 35 spaced from the holding portion 315 along the vibration direction X, and one end of the support device 35 is sandwiched between the fixing ring 5 and the first bending portion 13 . , the other end of which is connected to the diaphragm 31 through the frame 8 .
  • the voice coil 33 When the voice coil 33 is powered on, the voice coil 33 will vibrate under the action of the magnetic field of the magnetic circuit system 4 , and at the same time, the voice coil 33 will drive the diaphragm 31 to vibrate together, and the When the diaphragm 31 vibrates, the supporting device 35 is driven to vibrate together.
  • FIG. 7 and FIG. 8 there are two supporting devices 35 , and the two supporting devices 35 are arranged at intervals along the long axis of the main magnetic portion 43 .
  • the support device 35 By arranging the support device 35, the swing of the voice coil 33 along the long axis direction can be restricted, and the pure sound effect of the speaker device can be improved.
  • the support device 35 includes a flexible circuit board 37 and an auxiliary diaphragm 39.
  • the flexible circuit board 37 includes a first fixing portion 371 fixed relative to the fixing ring 5, a second fixing portion 373 fixed relative to the frame 8, The elastic connecting portion 375 connecting the first fixing portion 371 and the second fixing portion 373 and the pad portion 377 extending from the second fixing portion 373 are connected, and the outer edge of the auxiliary diaphragm 39 is fixed to the On the first fixing part 371, the inner edge of the auxiliary diaphragm 39 is fixed on the second fixing part 373, wherein the first fixing part 371 is formed with a first pad 378 connected to an external circuit A second pad 379 electrically connected to the voice coil 33 is formed on the pad portion 377 , and a window 131 for exposing the first pad 378 is formed on the first bending portion 13 .
  • only one flexible circuit board 37 of the supporting device 35 is electrically connected to the voice coil 33 . This can reduce the welding and sealing process.
  • the other flexible circuit board 37 may not be provided with the first pad. , the pad portion and the second pad formed on the pad portion.
  • the other flexible circuit board can also be replaced by a base material made of a flexible circuit board or a flexible circuit board.
  • the first fixing part 371 is fixed to the fixing ring 5
  • the second fixing part 373 is fixed to the frame 8
  • the outer edge of the auxiliary diaphragm 39 is also connected to the first The bent portion 13 is fixed.
  • the first fixing portion can also be fixed to the first bending portion
  • the outer edge of the auxiliary diaphragm is also fixed to the fixing ring
  • the auxiliary diaphragm is also fixed to the fixing ring.
  • the inner edge of the auxiliary diaphragm is fixed on the frame, and accordingly, the opening of the folded ring of the auxiliary diaphragm is set away from the upper diaphragm.
  • the supporting device 35 may also not include the auxiliary diaphragm.
  • the middle portion 311 has a cut hole 31A, and a reinforcing plate 9 is arranged in the cut hole 31A.
  • the frame 8 includes a first connecting portion connecting the reinforcing plate 9 and the middle portion 311 .
  • a second connecting portion 83 extending from the first connecting portion 81 to the direction of the magnetic circuit system 4, and a third connecting portion 85 spaced from the second connecting portion 83, the voice coil 33 is fixed
  • the support device 35 is fixed to the side of the third connection portion 85 away from the first connection portion 81 .
  • a first protrusion surrounding the fixing ring 5 is formed on the side of the extension portion 317 facing the housing 1 .
  • ring 318, and a first sealing groove 1A is formed on the inner wall 151 of the casing 1.
  • the first convex ring 318 is accommodated and fixed in the first sealing groove 1A, and the first convex ring 318 is between the fixing ring 5 and the casing. 1 forms a sealed connection with the first sealing groove 1A under the action of the clamping force, so as to ensure the airtightness of the accommodation space of the speaker device.

Abstract

本发明提供了一种扬声器装置及采用该扬声器装置的移动终端设备，所述扬声器装置包括外壳及扬声器单体，扬声器单体包括固定环、振动系统和磁路系统，振动系统包括振膜，振膜包括位于中央位置的中间部、自中间部的外周缘向外延伸形成的折环部、自折环部外周缘向外延伸的固持部以及自固持部的外周缘弯折延伸形成的延伸部，固持部固定于固定环沿振动方向远离磁路系统的表面，外壳包括围设形成收容空间的内壁，固定环抵接固定于内壁，延伸部夹设于所述固定环和内壁之间，延伸部朝向内壁的表面向内壁方向凸起形成有环绕固定环设置的第一凸环，内壁向远离所述延伸部的方向凹陷形成第一密封槽，第一凸环收容固定于第一密封槽。

Description

扬声器装置及移动终端设备 技术领域
本发明涉及声电领域，尤其涉及一种扬声器装置及采用该扬声器装置的移动终端设备。
 背景技术
随着移动互联网时代的到来，智能移动终端设备的数量不断上升。而在众多移动终端设备之中，手机无疑是最常见、最便携的移动终端设备。目前，手机的功能极其多样，其中之一便是高品质的音乐功能，因此，用于播放声音的扬声器装置被大量应用到现在的移动终端设备之中。
相关技术中的扬声器装置包括外壳及收容于外壳内的扬声器单体，扬声器单体包括振动系统、驱动振动系统振动发声的磁路系统以及将磁路系统固定在外壳内的固定环，振动系统包括与外壳围合形成收容空间的振膜及驱动振膜振动的音圈，振膜包括中间部、自中间部的外周缘依次向外延伸形成的折环部和固持部以及自固持部的外周缘弯折延伸形成的延伸部，固持部固定于固定环，延伸部夹设于固定环和外壳之间。然而，这种扬声器装置不仅易导致收容空间内的空气自延伸部与外壳之间的间隙泄漏，而且当这种扬声器装置应用到移动终端设备时，易导致移动终端设备外部的气体自固持部和外壳连接处进入移动终端设备内。
因此，实有必要提供一种新的扬声器装置解决上述技术问题。
 技术问题
本发明的目的在于提供一种扬声器装置及采用该扬声器装置的移动终端设备，该扬声器装置及采用该扬声器装置的移动终端设备可以保证扬声器装置收容空间的气密性。
 技术解决方案
为了达到上述目的，本发明提供了一种扬声器装置，包括具有收容空间的外壳及收容于所述外壳内的扬声器单体，所述扬声器单体包括固定于所述外壳的固定环、固定于所述固定环的振动系统和磁路系统；所述振动系统包括用于振动发声且固定于所述固定环的振膜，所述振膜包括位于中央位置的中间部、自所述中间部的外周缘向外延伸形成的折环部、自所述折环部外周缘向外延伸的固持部以及自所述固持部的外周缘弯折延伸形成的延伸部，所述固持部固定于所述固定环沿振动方向远离所述磁路系统的表面，所述外壳包括围设形成所述收容空间的内壁，所述固定环抵接固定于所述内壁，所述延伸部夹设于所述固定环和所述内壁之间，所述延伸部朝向所述内壁的表面向所述内壁方向凸起形成有环绕所述固定环设置的第一凸环，所述内壁向远离所述延伸部的方向凹陷形成第一密封槽，所述第一凸环收容固定于所述第一密封槽。
优选地，所述第一凸环挤压固定于所述第一密封槽中。
优选地，所述扬声器装置还包括压设于所述固持部远离所述固定环一侧表面的机壳，所述固持部背离所述固定环的表面向所述机壳方向凸起形成有环绕所述折环部设置的第二凸环，所述机壳朝向所述固持部的表面向远离所述固持部方向凹陷形成与所述第二凸环对应的第二密封槽，所述第二凸环收容且固定于所述第二密封槽。
优选地，所述第二凸环挤压固定于所述第二密封槽中。
优选地，所述磁路系统包括相对所述外壳固定的磁轭以及固定于所述磁轭朝向所述振膜一侧的主磁部及环绕所述主磁部设置的副磁部，所述主磁部与所述副磁部间隔设置形成磁间隙，所述磁间隙内插入有音圈。
优选地，所述副磁部包括固定于所述磁轭朝向所述振膜一侧并环绕所述主磁部设置的多个副磁体及盖设于多个所述副磁体远离所述磁轭一侧的夹板。
优选地，所述振动系统还包括与所述固持部沿振动方向间隔设置的支撑装置，所述支撑装置的一端夹设于所述固定环和所述外壳之间，其另一端通过骨架与所述振膜连接。
优选地，所述支撑装置包括柔性电路板和辅助振膜，所述柔性电路板包括相对所述固定环固定的第一固定部、相对所述骨架固定的第二固定部、连接所述第一固定部和所述第二固定部的弹性连接部及自所述第二固定部延伸形成的焊盘部，所述辅助振膜的外边缘固定于所述第一固定部上，所述辅助振膜的内边缘固定于所述第二固定部上，其中，所述第一固定部上形成有与外部电路连接的第一焊盘，所述焊盘部上形成有与所述音圈电连接的第二焊盘。
优选地，所述中间部具有切中孔，所述切中孔内设有加强板，所述骨架包括连接所述加强板和所述中间部的第一连接部以及自所述第一连接部向所述磁路系统延伸形成的第二连接部及与所述第二连接部间隔设置的第三连接部，所述音圈固定于所述第二连接部远离所述第一连接部的一侧，所述支撑装置固定于所述第三连接部远离所述第一连接部的一侧。
优选地，所述外壳内设有与所述振膜沿振动方向间隔设置的隔离组件，所述隔离组件将所述收容空间分隔为第一腔体和第二腔体，所述隔离组件包括与所述磁轭固定的支撑环及固定于所述支撑环和所述磁轭的透气隔离件，所述支撑环与所述磁轭之间形成有透气通道，所述第一腔体和所述第二腔体通过所述透气隔离件和所述透气通道气流连通，所述外壳向所述第一腔体内凸起形成支撑所述支撑环的凸块，其中，所述隔离组件和所述外壳围合形成所述第一腔体，所述振膜、所述外壳和所述隔离组件围合形成所述第二腔体。
优选地，所述磁轭远离所述振膜的一侧与所述透气隔离件固定连接。
优选地，所述磁轭和所述主磁部上贯穿设有沿所述振动方向延伸的穿孔，所述透气隔离件覆盖所述穿孔。
优选地，所述外壳包括主体部、自所述主体部的边缘向远离所述音圈的方向弯折延伸形成的第一弯折部及自所述第一弯折部远离所述主体部的一端弯折延伸形成的第二弯折部，其中，所述凸块位于所述主体部上，所述第一弯折部位于所述固定环背离所述固持部的一侧，所述延伸部夹设于所述固定环和所述第二弯折部之间。
本发明还提供一种移动终端设备，包括上述的扬声器装置，所述扬声器装置的机壳为所述移动终端设备的壳体。
 有益效果
与相关技术相比，本发明的扬声器装置及采用该扬声器装置的移动终端设备通过在所述延伸部朝向所述外壳的一侧凸起形成有环绕所述固定环设置的第一凸环，且外壳1的内壁上形成第一密封槽，第一凸环收容且固定于第一密封槽中，所述第一凸环在所述固定环和所述外壳夹持力的作用下与第一密封槽形成密封连接，从而可以保证扬声器装置收容空间的气密性。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中。
图1为本发明扬声器装置一较佳实施例的分解图。
图2为图1所示扬声器装置中a部分的放大图。
图3为图1所示扬声器装置中柔性电路板的结构示意图。
图4为图1所示扬声器装置中外壳的结构示意图。
图5为图1所示扬声器装置中骨架的结构示意图。
图6为图1所示扬声器装置组装后的立体图。
图7为图6所示扬声器装置沿A-A方向的剖示图。
图8为图7所示扬声器装置中b部分的放大图。
图9为图6所示扬声器装置沿B-B方向的剖示图。
图10为图9所示扬声器装置中外壳和机壳的结构示意图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请结合参阅图1至图10，一种扬声器装置包括机壳100、具有收容空间10的外壳1及收容于所述外壳1内的扬声器单体2，所述外壳1包括围合形成收容空间10的内壁151。
所述扬声器单体2包括固定在所述外壳1内的固定环5、固定于固定环5的振动系统3和磁路系统4。
所述振动系统3包括振动发声且固定于所述固定环5的振膜31及驱动所述振膜31振动的音圈33。
所述振膜31包括位于中央位置的中间部311、自所述中间部311的外周缘向外延伸形成的折环部313、自所述折环部313外周缘向外延伸的固持部315以及自所述固持部315的外周缘弯折延伸形成的延伸部317，所述固持部315固定于所述固定环5沿振动方向X远离磁路系统4的表面，所述延伸部317夹设于所述固定环5和所述外壳1的内壁151之间。
其中，所述延伸部317朝向所述内壁151的表面向所述内壁151方向凸起形成有环绕所述固定环5设置的第一凸环318。
所述内壁151向远离所述延伸部317的方向凹陷形成第一密封槽1A，所述第一凸环318收容且固定于所述第一密封槽1A 。在所述振膜31与所述外壳1和所述固定环5装配时，所述第一凸环318收容且固定于所述第一密封槽1A内，且在所述固定环5和所述外壳1夹持力的作用下使得所述第一凸环318与所述第一密封槽1A形成密封连接，即挤压固定于第一密封槽1A内。
在本实施方式中，所述机壳100压设于所述固持部315远离所述固定环5的一侧表面，所述固持部315背离所述固定环5的表面向所述机壳100方向凸起形成有环绕所述折环部313设置的的第二凸环319。所述机壳100朝向所述固持部315的表面向远离所述固持部315方向凹陷形成与所述第二凸环319对应的第二密封槽100A，所述第二凸环319收容且固定于所述第二密封槽100A。所述机壳100与所述固持部315固定时，在所述固定环5和所述机壳100夹持力的作用下，第二凸环319与第二密封槽100A形成密封连接，即第二凸环319挤压固定于第二密封槽100A中，从而可以保证所述机壳100与所述固持部315之间的气密性。
所述磁路系统4包括相对外壳1固定的磁轭41以及固定于磁轭41朝向振膜31一侧的主磁部43及环绕主磁部43设置的副磁部45，主磁部43与副磁部45间隔设置形成磁间隙4A，音圈33插入所述磁间隙4A内。
所述主磁部43包括固定于所述磁轭41朝向所述振膜31一侧的主磁体431及固设于所述主磁体431远离所述磁轭41一侧的极芯433。通过所述极芯433的导磁作用可以提高所述磁间隙4A内的磁通量。
其中，所述主磁体431可以为磁钢，也可以为天然磁石。在本实施方式中，优选地，所述主磁体431为磁钢。
所述副磁部45包括固定于所述磁轭41朝向所述振膜31一侧并环绕所述主磁部43设置的多个副磁体451及盖设于多个所述副磁体451远离所述磁轭41一侧的夹板453。
其中，所述副磁体451可以为磁钢，也可以为天然磁石。在本实施方式中，优选地，所述副磁体451为磁钢。
在本实施方式中，所述夹板453由导磁材料制成。通过所述夹板453的导磁作用可以提高所述磁间隙4A内的磁通量，从而可以提高扬声器装置的声学性能。可以理解的是，在其他实施方式中，所述夹板也可以由非导磁材料制成。
如图7和图9所示，所述极芯433位于所述夹板453的通孔内并与所述夹板453位于同一水平面内。
如图1、图6及图7所示，所述主磁部43整体为长方形结构，所述副磁体451设有四个，其中，两个所述副磁体451沿所述主磁部43的短轴边间隔设置，另外两个所述副磁体451沿所述主磁部43的长轴边间隔设置。
可以理解的是，上述的所述主磁部43和所述副磁部45的结构并不局限于此。例如，所述主磁部43可以仅包括所述主磁体；所述主磁体331和所述副磁体451可以均由多个磁钢沿振动方向X叠加形成，且在振动方向X上，相邻两磁钢之间还可以设置极芯。
所述外壳1内设有与所述振膜31沿振动方向X间隔设置的隔离组件6，所述隔离组件6将所述收容空间10A分隔为第一腔体10B和第二腔体10C。其中，所述隔离组件6和所述外壳1围合形成所述第一腔体10B，所述振膜31、所述外壳1和所述隔离组件6围合形成所述第二腔体10C。
所述隔离组件6包括与所述磁轭41固定的支撑环61及固定于所述支撑环61和所述磁轭41的透气隔离件63，所述支撑环61与所述磁轭41之间形成有透气通道4B，所述第一腔体10B和所述第二腔体10C可通过所述透气隔离件63和所述透气通道4B气流连通，所述外壳1向所述第一腔体10B内凸起形成支撑所述支撑环61的凸块7。所述支撑环61与所述磁轭41之间形成有透气通道4B。通过设置所述透气通道4B，从而可以使得所述第一腔体10B和所述第二腔体10C通过所述透气隔离件63可气流连通。通过所述固定环5、所述支撑环61及所述凸块7的配合，可以使得所述磁路系统4固定在所述外壳1内，这种配合结构不仅结构简单以便于扬声器装置的装配，而且通过所述隔离组件6将所述收容空间10A分隔为第一腔体10B和第二腔体10C，且所述第一腔体10B和所述第二腔体10C通过所述隔离组件6的所述透气隔离件63可气流连通，从而可以使得所述第一腔体10B内可填充吸音材料（图未示）以改善所述扬声器装置的声学性能。
如图7所示，所述磁轭41沿所述音圈33的短轴方向的两端固定于所述支撑环61，其沿所述音圈33的长轴方向的两端与所述支撑环61间隔设置形成所述透气通道4B。
在本实施例中，所述磁轭41远离所述振膜31的一侧与所述透气隔离件63固定连接。
如图7和图9所示，所述磁轭41和所述主磁部43上贯穿设有沿所述振动方向X延伸的穿孔4C，所述透气隔离件63覆盖所述穿孔4C。通过设置所述穿孔4C可以增大所述第一腔体10B和所述第二腔体10C之间发生气流交换时的气流流通体积，从而有利于提高扬声器装置的声学性能。可以理解的是，在其他实施方式中，所述磁轭41和所述主磁部43上也可以不设置所述穿孔。
其中，所述吸音材料可以为吸音棉、吸音颗粒、吸音粉等。在本实施方式中，所述吸音材料为吸音颗粒或/和吸音粉。
如图4和图6所示，为了便于在所述第一腔体10B内填充所述吸音材料，所述外壳1对应所述第一腔体10B的位置上贯穿设有与所述第一腔体10B连通的灌粉孔1B，相应地，所述外壳1上还固设有密封所述灌粉孔1B的密封盖1C。
如图1所示，所述凸块7由所述外壳1冲压形成；所述凸块7设有多个，且多个所述凸块7间隔设置。可以理解的是，在其他实施方式中，所述凸块7也可以设置成环状结构。
所述外壳1包括主体部11、自所述主体部11的边缘向远离所述音圈33的方向弯折延伸形成的第一弯折部13及自所述第一弯折部13远离所述主体部11的一端弯折延伸形成的第二弯折部15，其中，所述凸块7位于所述主体部11上，所述第一弯折部13位于所述固定环5背离所述固持部315的一侧，所述延伸部317夹设于所述固定环5和所述第二弯折部15之间。需要理解的是，所述外壳1为一端开口的，即所述第二弯折部15围设形成开口，所述振膜31固定于所述第二弯折部15且覆盖所述外壳1的开口，即本实施例中的扬声器装置是无前盖的。
所述振动系统3还包括与所述固持部315沿振动方向X间隔设置的支撑装置35，所述支撑装置35的一端夹设于所述固定环5和所述第一弯折部13之间，其另一端通过骨架8与所述振膜31连接。当所述音圈33通电后，所述音圈33会在所述磁路系统4磁场的作用下振动，与此同时，所述音圈33会驱动所述振膜31一同振动，而所述振膜31振动时会带动所述支撑装置35一同振动。
如图7和图8所示，所述支撑装置35设有两个，且两个所述支撑装置35沿所述主磁部43的长轴边间隔设置。通过设置所述支撑装置35可以限制所述音圈33沿长轴方向的摇摆，改善扬声器装置的纯音效果。
所述支撑装置35包括柔性电路板37和辅助振膜39，所述柔性电路板37包括相对所述固定环5固定的第一固定部371、相对所述骨架8固定的第二固定部373、连接所述第一固定部371和所述第二固定部373的弹性连接部375及自所述第二固定部373延伸形成的焊盘部377，所述辅助振膜39的外边缘固定于所述第一固定部371上，所述辅助振膜39的内边缘固定于所述第二固定部373上，其中，所述第一固定部371上形成有与外部电路连接的第一焊盘378，所述焊盘部377上形成有与所述音圈33电连接的第二焊盘379，所述第一弯折部13上开设有使所述第一焊盘378外露的窗口131。通过设置所述柔性电路板37可以实现所述音圈33与外部电路电连接，通过设置所述辅助振膜39可以提高所述扬声器装置的声学性能。
在本实施方式中，优选地，仅一个所述支撑装置35的柔性电路板37与所述音圈33电连接。这样可以减少焊接封线工序。
请参阅图1，进一步优选地，当仅一个所述支撑装置35的柔性电路板37与所述音圈33电连接时，另一个所述柔性电路板37还可以不设置所述第一焊盘、所述焊盘部及形成于所述焊盘部上的所述第二焊盘。
更进一步优选地，当仅一个所述支撑装置35的柔性电路板37与所述音圈33电连接时，另一个所述柔性电路板还可以替换为由柔性电路板的基材材料制成或由其他材料制成的非导电板，这样可以降低了电路板的使用成本。
如图8所示，所述第一固定部371固定于所述固定环5，所述第二固定部373固定于所述骨架8，所述辅助振膜39的外边缘还与所述第一弯折部13固定。可以理解的是，在其实施方式中，所述第一固定部还可以固定于所述第一弯折部，所述辅助振膜的外边缘还与所述固定环固定，所述辅助振膜的内边缘固定于所述骨架上，相应地，所述辅助振膜的折环的开口被设置成背离所述上振膜。
可以理解的是，在其他实施方式中，所述支撑装置35也可以不包括所述辅助振膜。
在本实施方式中，所述中间部311具有切中孔31A，所述切中孔31A内设有加强板9，所述骨架8包括连接所述加强板9和所述中间部311的第一连接部81以及自所述第一连接部81向所述磁路系统4方向延伸形成的第二连接部83及与所述第二连接部83间隔设置的第三连接部85，所述音圈33固定于所述第二连接部83远离所述第一连接部81的一侧，所述支撑装置35固定于所述第三连接部85远离所述第一连接部81的一侧。
与相关技术相比，本发明的扬声器装置及采用该扬声器装置的移动终端设备通过在所述延伸部317朝向所述外壳1的一侧凸起形成有环绕所述固定环5设置的第一凸环318，且外壳1的内壁151上形成第一密封槽1A，第一凸环318收容且固定于第一密封槽1A中，所述第一凸环318在所述固定环5和所述外壳1夹持力的作用下与第一密封槽1A形成密封连接，从而可以保证扬声器装置收容空间的气密性。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (13)

  1. 一种扬声器装置，包括具有收容空间的外壳及收容于所述外壳内的扬声器单体，所述扬声器单体包括固定于所述外壳的固定环、固定于所述固定环的振动系统和磁路系统，所述振动系统包括用于振动发声且固定于所述固定环的振膜，所述振膜包括位于中央位置的中间部、自所述中间部的外周缘向外延伸形成的折环部、自所述折环部外周缘向外延伸的固持部以及自所述固持部的外周缘弯折延伸形成的延伸部，所述固持部固定于所述固定环沿振动方向远离所述磁路系统的表面，其特征在于，所述外壳包括围设形成所述收容空间的内壁，所述固定环抵接固定于所述内壁，所述延伸部夹设于所述固定环和所述内壁之间，所述延伸部朝向所述内壁的表面向所述内壁方向凸起形成有环绕所述固定环设置的第一凸环，所述内壁向远离所述延伸部的方向凹陷形成第一密封槽，所述第一凸环收容固定于所述第一密封槽。
  2. 根据权利要求1所述的扬声器装置，其特征在于，所述第一凸环挤压固定于所述第一密封槽中。
  3. 根据权利要求1所述的扬声器装置，其特征在于，所述扬声器装置还包括压设于所述固持部远离所述固定环一侧表面的机壳，所述固持部背离所述固定环的表面向所述机壳方向凸起形成有环绕所述折环部设置的第二凸环，所述机壳朝向所述固持部的表面向远离所述固持部方向凹陷形成与所述第二凸环对应的第二密封槽，所述第二凸环收容且固定于所述第二密封槽。
  4. 根据权利要求3所述的扬声器装置，其特征在于，所述第二凸环挤压固定于所述第二密封槽中。
  5. 根据权利要求1所述的扬声器装置，其特征在于，所述磁路系统包括相对所述外壳固定的磁轭以及固定于所述磁轭朝向所述振膜一侧的主磁部及环绕所述主磁部设置的副磁部，所述主磁部与所述副磁部间隔设置形成磁间隙，所述磁间隙内插入有音圈。
  6. 根据权利要求5所述的扬声器装置，其特征在于，所述副磁部包括固定于所述磁轭朝向所述振膜一侧并环绕所述主磁部设置的多个副磁体及盖设于多个所述副磁体远离所述磁轭一侧的夹板。
  7. 根据权利要求5或6中任一项所述的扬声器装置，其特征在于，所述振动系统还包括与所述固持部沿振动方向间隔设置的支撑装置，所述支撑装置的一端夹设于所述固定环和所述外壳之间，其另一端通过骨架与所述振膜连接。
  8. 根据权利要求7所述的扬声器装置，其特征在于，所述支撑装置包括柔性电路板和辅助振膜，所述柔性电路板包括相对所述固定环固定的第一固定部、相对所述骨架固定的第二固定部、连接所述第一固定部和所述第二固定部的弹性连接部及自所述第二固定部延伸形成的焊盘部，所述辅助振膜的外边缘固定于所述第一固定部上，所述辅助振膜的内边缘固定于所述第二固定部上，其中，所述第一固定部上形成有与外部电路连接的第一焊盘，所述焊盘部上形成有与所述音圈电连接的第二焊盘。
  9. 根据权利要求8所述的扬声器装置，其特征在于，所述中间部具有切中孔，所述切中孔内设有加强板，所述骨架包括连接所述加强板和所述中间部的第一连接部以及自所述第一连接部向所述磁路系统延伸形成的第二连接部及与所述第二连接部间隔设置的第三连接部，所述音圈固定于所述第二连接部远离所述第一连接部的一侧，所述支撑装置固定于所述第三连接部远离所述第一连接部的一侧。
  10. 根据权利要求5所述的扬声器装置，其特征在于，所述外壳内设有与所述振膜沿振动方向间隔设置的隔离组件，所述隔离组件将所述收容空间分隔为第一腔体和第二腔体，所述隔离组件包括与所述磁轭固定的支撑环及固定于所述支撑环和所述磁轭的透气隔离件，所述支撑环与所述磁轭之间形成有透气通道，所述第一腔体和所述第二腔体通过所述透气隔离件和所述透气通道气流连通，所述外壳向所述第一腔体内凸起形成支撑所述支撑环的凸块，其中，所述隔离组件和所述外壳围合形成所述第一腔体，所述振膜、所述外壳和所述隔离组件围合形成所述第二腔体。
  11. 根据权利要求10所述的扬声器装置，其特征在于，所述磁轭远离所述振膜的一侧与所述透气隔离件固定连接。
  12. 根据权利要求11所述的扬声器装置，其特征在于，所述磁轭和所述主磁部上贯穿设有沿所述振动方向延伸的穿孔，所述透气隔离件覆盖所述穿孔。
  13. 根据权利要求10所述的扬声器装置，其特征在于，所述外壳包括主体部、自所述主体部的边缘向远离所述音圈的方向弯折延伸形成的第一弯折部及自所述第一弯折部远离所述主体部的一端弯折延伸形成的第二弯折部，其中，所述凸块位于所述主体部上，所述第一弯折部位于所述固定环背离所述固持部的一侧，所述延伸部夹设于所述固定环和所述第二弯折部之间。
    14. 一种移动终端设备，包括如权利要求1-13中任一项所述的扬声器装置，所述扬声器装置的机壳为所述移动终端设备的壳体。
PCT/CN2020/104689 2020-07-08 2020-07-25 扬声器装置及移动终端设备 WO2022007026A1 (zh)

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