WO2024045311A1 - 扬声器箱 - Google Patents

扬声器箱 Download PDF

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Publication number
WO2024045311A1
WO2024045311A1 PCT/CN2022/128545 CN2022128545W WO2024045311A1 WO 2024045311 A1 WO2024045311 A1 WO 2024045311A1 CN 2022128545 W CN2022128545 W CN 2022128545W WO 2024045311 A1 WO2024045311 A1 WO 2024045311A1
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WO
WIPO (PCT)
Prior art keywords
fixed
elastic
magnetic
yoke
basin frame
Prior art date
Application number
PCT/CN2022/128545
Other languages
English (en)
French (fr)
Inventor
刘莎莎
刘晓东
Original Assignee
瑞声光电科技(常州)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 瑞声光电科技(常州)有限公司 filed Critical 瑞声光电科技(常州)有限公司
Priority to US18/097,456 priority Critical patent/US20240073619A1/en
Publication of WO2024045311A1 publication Critical patent/WO2024045311A1/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • 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
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the invention belongs to the field of acoustic and electrical technology, and in particular relates to a speaker box.
  • the speaker box is a transducer device that converts electrical signals into acoustic signals. It is often used in small electronic devices that can produce sound, such as mobile phones, laptops, tablets, etc.
  • the existing speaker box mainly includes a front shell, a rear shell that is assembled with the front shell to form a receiving space, a sound-emitting unit that is accommodated and fixed in the receiving space, and a metal shrapnel and supporting foam fixed to the rear shell. and the sound-emitting monomer together form the rear cavity, and the sound-emitting monomer is fixed to the metal shrapnel and supporting foam.
  • This kind of speaker box not only requires the front shell to cooperate with the rear shell and the sound-emitting unit to form a rear cavity, but also requires metal shrapnel and support foam to elastically support the sound-emitting unit, resulting in too many parts and too large sizes.
  • the cavity space is smaller.
  • the sound-emitting unit includes a basin frame, a vibration system respectively fixed to the basin frame, a magnetic circuit system that drives the vibration system to vibrate, and a front cover that covers the basin frame and forms a front cavity with the vibration system.
  • the waterproof double-sided tape on the front cover can only be attached to the highest plane for sealing, making the overall height of the machine too high.
  • the magnetic circuit system can be divided into a single magnetic circuit structure, a three magnetic circuit structure, a five magnetic circuit structure, etc. according to actual needs.
  • the single magnetic circuit structure includes a magnetic bowl and magnetic steel accommodated and fixed on the magnetic bowl.
  • the magnetic bowl cannot wrap the magnetic steel when flanging, which results in a large amount of magnetic field leakage. Therefore, in order to reduce the magnetic field leakage and cause the overall structure to vibrate. Phenomenon, it is also necessary to glue the peripheral part of the magnetic bowl, which makes the preparation process of the speaker box complicated and wastes time.
  • the technical problem to be solved by the present invention is how to provide a speaker with few parts, small size, large rear cavity space, small overall height, and whose sound-emitting unit can reduce magnetic field leakage without the need to glue the peripheral part of the yoke. box.
  • the present invention is implemented by providing a speaker box, which includes a back shell with a cavity, an elastic fixing part fixed on the back shell, a sound emitting device supported on the elastic fixing part and spaced apart from the back shell.
  • a speaker box which includes a back shell with a cavity, an elastic fixing part fixed on the back shell, a sound emitting device supported on the elastic fixing part and spaced apart from the back shell.
  • Single unit, the orthographic projection of the sound-generating unit is located in the cavity;
  • the sound-generating unit includes a basin frame, a vibration system respectively fixed on the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and produce sound;
  • a front cover is provided on the basin frame and forms a front cavity with the vibration system.
  • the basin frame, the vibration system and the magnetic circuit system together form a sound-generating inner cavity;
  • the magnetic circuit system includes a magnetic circuit.
  • the body is supported on the elastic fixing member through the magnetic yoke;
  • the front cover includes an annular support part fixed to the basin frame, a cover plate spaced opposite to the vibration system, and a support part formed by the support part.
  • the outer peripheral edge is bent and extended in a direction away from the cover plate and is an annular covering portion, and the peripheral edge of the cover plate is connected to the inner peripheral edge of the support portion; the cover plate is provided with a first thread running through it
  • the sound outlet hole, the covering part extends to the periphery of the magnetic yoke and together with the magnetic yoke completely wraps the secondary magnetic steel; the elastic fixing part, the magnetic yoke and the covering part jointly
  • the cavity is sealed to form a rear cavity.
  • the covering part completely covers the auxiliary magnetic steel and at least partially covers the magnetic yoke in an orthographic projection of the magnetic circuit system perpendicular to the vibration direction of the vibration system.
  • the basket frame is located on a side of the magnetic circuit system close to the vibration system, and is fixedly connected to the auxiliary magnet steel.
  • the covering part is bent from the outer peripheral edge of the support part and then attached to the outer peripheral side of the basket and the outer peripheral side of the secondary magnet steel and extends toward the peripheral edge of the yoke.
  • the cover plate includes a cover plate body spaced opposite to the vibration system and an extension wall extending from the peripheral edge of the cover plate body toward the support portion and connected to the inner peripheral edge of the support portion;
  • the first sound outlet is provided on the cover body.
  • the magnetic circuit system also includes a main pole core stacked on the side of the main magnet near the vibration system and a cover fixed on the side of the auxiliary magnet near the vibration system.
  • the upper splint, the basin frame is fixed on the side of the upper splint away from the auxiliary magnetic steel, and the upper splint is located in the space enclosed by the covering part; the upper splint includes an annular and fixed
  • the fixed ring of the basin frame and the auxiliary pole core extend horizontally from the fixed ring in a direction close to the main pole core and are stacked on the auxiliary magnetic steel.
  • the vibration system includes a diaphragm fixed on the basin frame, a voice coil inserted and suspended in the magnetic gap to drive the diaphragm to vibrate, and a diaphragm fixed on the basin frame and connected with the Elastic members are arranged opposite and spaced apart from the diaphragm; the elastic member is connected to an end of the voice coil away from the diaphragm, and the support part presses and fixes the diaphragm to the basin frame.
  • the diaphragm includes a folding ring, a vibrating part extending from the inner peripheral edge of the folding ring, a spherical top attached to the vibration part, and a fixing part extending from the outer peripheral edge of the folding ring. And a vertical wall formed by the fixing part bending and extending in a direction close to the basin frame; the voice coil is fixed on the side of the vibrating part close to the magnetic circuit system; the supporting part is fixed on the The fixing part, the covering part is bent from the outer peripheral edge of the supporting part and then extends close to the vertical wall toward the peripheral edge of the yoke.
  • the elastic member is FPC, and there are two elastic members and they are respectively provided on opposite sides of the basin frame; each elastic member includes a first fixed arm fixed to the basin frame, Two second fixed arms respectively fixed on the side of the voice coil away from the diaphragm and electrically connected to the voice coil, and two second fixed arms respectively fixed to the two second fixed arms from both ends of the first fixed arm.
  • the arms extend and form two elastic arms that are fixedly connected; the first fixed arm of one of the elastic members is provided with a lead portion that extends in a direction away from the voice coil and penetrates the wrapping portion. The lead portion is used to introduce external electrical signals to the voice coil.
  • the elastic fixing member includes a first elastic fixing part that is annular and fixed at the peripheral position of the rear shell, and is formed from part of the inner peripheral edges on opposite sides of the first elastic fixing part to the said first elastic fixing part respectively.
  • the elastic extension part is bent and extended in the cavity
  • the elastic support part is bent and extended from the side of the elastic extension part away from the first elastic fixing part
  • the elastic support part is away from the elastic extension part.
  • One side is bent, extended and fixed to the second elastic fixing part of the rear case, and the yoke is supported on the elastic supporting part.
  • the front cover of the speaker box in the present invention includes an annular support portion fixed to the basin frame, a cover plate spaced opposite to the vibration system, and an outer peripheral edge of the support portion bent in a direction away from the cover plate.
  • the covering part is extended and annular, and the covering part extends to the periphery of the magnetic yoke and completely wraps the secondary magnet steel together with the magnetic yoke.
  • the sound-emitting monomer is elastically supported on the elastic fixing part through the magnetic yoke, and the elastic fixing part, The yoke and the covering part jointly seal the cavity of the rear case to form the rear cavity.
  • the covering part of the front cover can cooperate with the elastic fixing part and the magnetic yoke to seal the cavity of the rear case to form the rear cavity.
  • the fixing piece can directly elastically support the sound-emitting unit, which not only reduces the installation of the front shell and support foam, simplifies the assembly process, reduces production costs, but also simplifies the support design of the sound-emitting unit and enlarges the rear cavity. space, and the overall size is reduced to a single size, saving layout space.
  • Waterproof double-sided tape can also be affixed to the lower support plane for waterproofing, thereby reducing the height of the entire machine.
  • the main magnet and the auxiliary magnet can be completely wrapped with the magnetic yoke to reduce the leakage of the magnetic field. This eliminates the need to glue the peripheral part of the yoke and simplifies the assembly process of the sound unit.
  • Figure 1 is an exploded schematic structural diagram of a speaker box provided by an embodiment of the present invention
  • Figure 2 is a schematic diagram of the overall structure of a speaker box provided by an embodiment of the present invention.
  • Figure 3 is a cross-sectional view along line A-A in Figure 2;
  • Fig. 4 is a cross-sectional view along line B-B in Fig. 2 .
  • an embodiment of the present invention provides a speaker box, which includes a rear shell 5 with a cavity 50 , an elastic fixing part 6 fixed to the rear shell 5 , a speaker box supported on the elastic fixing part 6 and connected with the elastic fixing part 6 .
  • the rear shell 5 has sound-generating units 100 arranged at intervals, and the front projection of the sound-generating unit 100 is located in the cavity 50; the sound-generating unit 100 includes a basin frame 1, a vibration system 2 respectively fixed on the basin frame 1, and a driving vibration system 2 for vibration.
  • the sound-generating magnetic circuit system 3 and the front cover 4 are located on the basin frame 1 and form a front cavity 10 with the vibration system 2; the basin frame 1, the vibration system 2 and the magnetic circuit system 3 together form a sound-generating inner cavity 20, and the front cover 4 is provided with a first sound outlet 40 passing through it.
  • the basin frame 1 is a rectangular frame.
  • it can also use other shapes of frames, such as oval frames, trapezoidal frames, etc.
  • the vibration system 2 includes a diaphragm 21 fixed on the basin frame 1 , a voice coil 22 inserted and suspended in the magnetic gap 30 in the magnetic circuit system 3 to drive the diaphragm 21 to vibrate, and a voice coil 22 fixed on the basin frame 1
  • the elastic member 23 is opposite to the diaphragm 21 and arranged at a distance.
  • the elastic member 23 is electrically connected to an end of the voice coil 22 away from the diaphragm 21 .
  • the diaphragm 21 includes a folding ring 211, a vibrating part 212 extending from the inner circumference of the folding ring 211, a dome 213 attached to the vibrating part 212, and a fixing part extending from the outer circumference of the folding ring 211.
  • the front cover 4 , the folding ring 211 of the diaphragm 21 , the vibrating portion 212 and the dome 213 together form the front cavity 10 .
  • the folding ring 211 is bent away from the front cover 4, so that the distance between the folding ring 211 and the front cover 4 can be increased within a limited arrangement space, that is, the space of the front cavity 10 is increased, thereby improving the acoustic performance of the speaker box.
  • the elastic member 23 is an FPC (flexible circuit board).
  • FPC flexible circuit board
  • Two second fixed arms 232 respectively fixed on the side of the voice coil 22 away from the diaphragm 21 and electrically connected to the voice coil 22 and extending from both ends of the first fixed arm 231 to the two second fixed arms 232 respectively.
  • the voice coil 22 has a rectangular structure, and the two first fixing arms 231 in each elastic member 23 are respectively fixed at two adjacent corner positions of the voice coil 22 .
  • the magnetic circuit system 3 includes a magnetic yoke 31, a main magnet 32 fixed on the side of the yoke 31 close to the vibration system 2, and spacers arranged around the main magnet 32 and forming a magnetic gap together with the main magnet 32. 30's secondary magnet steel 33.
  • auxiliary magnets 33 there are four auxiliary magnets 33 , and they are arranged in pairs of two on opposite sides of the main magnet 32 . Of course, you can also set only two according to actual needs.
  • the basket frame 1 is located on the side of the magnetic circuit system 3 close to the vibration system 2 and is fixedly connected to the auxiliary magnet steel 33 .
  • the magnetic circuit system 3 also includes a main pole core 34 stacked on the side of the main magnet steel 32 close to the diaphragm 21 and a pole core 34 fixed to the basin frame 1 and covered by the auxiliary magnet steel 33 close to the diaphragm 21 .
  • the upper plywood 35 on one side; the upper plywood 35 includes an annular fixed ring 351 fixed to the basin frame 1 and a auxiliary auxiliary magnet 33 that extends horizontally from the fixed ring 351 in a direction close to the main pole core 34 and is stacked on the auxiliary magnet steel 33.
  • Pole core 352 Pole core 352.
  • auxiliary pole cores 352 There are four auxiliary pole cores 352 and they correspond to the four auxiliary magnet steels 33 one-to-one.
  • the basin frame 1 is fixed to the side of the fixing ring 351 in the upper plywood 35 away from the auxiliary magnet steel 33 , that is, the basin frame 1 is indirectly fixedly connected to the auxiliary magnet steel 33 .
  • the first fixed arm 231 of the elastic member 23 is fixed on the side of the fixing ring 351 away from the basin frame 1 , that is, the elastic member 23 is indirectly fixed to the basin frame 1 through the upper clamping plate 35 .
  • the front cover 4 includes an annular support portion 41 fixed to the basin frame 1 , a cover plate 42 spaced oppositely by the vibration system 2 , and the outer peripheral edge of the support portion 41 is bent in a direction away from the cover plate 42
  • the extending and annular covering portion 43 connects the periphery of the cover plate 41 with the inner periphery of the supporting portion 41 ; the covering portion 43 extends to the periphery of the yoke 31 and together with the yoke 31 completely wraps the auxiliary magnet 33 .
  • the covering part 43 extends to the periphery of the yoke 31 and wraps the auxiliary magnet 33 together with the yoke 31. In this way, the covering part 43 cooperates with the yoke 31 to reduce the magnetic field formed by the main magnet 32 and the auxiliary magnet 33. leakage, and there is no need to glue the peripheral part of the yoke 31, which simplifies the preparation process of the speaker box.
  • the cover 42 includes a cover body 422 spaced apart from the vibration system 1 and an extension wall 421 extending from the periphery of the cover body 422 toward the support portion 41 and connected to the inner periphery of the support portion 41 .
  • the cover body 422 is spaced apart from the dome 213 of the diaphragm 21 , the vibrating portion 212 and the partial ring 211 .
  • the first sound outlet 40 is provided on the cover body 422 , and at the same time, the first sound outlet 40 is covered with the first breathable isolator 7 .
  • the support part 41 , the extension wall 421 , the cover body 422 and the diaphragm 21 together form the front cavity 10 .
  • the supporting part 41 presses and fixes the fixing part 214 of the diaphragm 21 to the side of the frame 1 away from the magnetic circuit system 3 . That is, the supporting part 41 is indirectly fixed to the basin frame 1 through the fixing part 214 of the diaphragm 21 .
  • the first fixed arm 231 of one of the elastic members 23 is provided with a lead portion 234 that extends in a direction away from the voice coil 22 and penetrates the covering portion 43 and the rear case 5 in sequence.
  • the lead portion 234 is used to introduce the voice coil 22 to the outside. electric signal.
  • the upper splint 35 is located in the space surrounded by the covering portion 43 .
  • the covering portion 42 completely covers the auxiliary magnet steel 33 and at least partially covers the yoke 31 in the orthographic projection of the magnetic circuit system 3 along the vibration direction perpendicular to the diaphragm 21 . This can better wrap the auxiliary magnet steel 33 in the space formed by the covering portion 43 and the yoke 31 to better reduce the leakage of the magnetic field.
  • the covering portion 43 is bent from the outer circumferential edge of the support portion 41 and then is attached to the outer circumferential side of the frame 1 and the outer circumferential side of the auxiliary magnet steel 33 and extends toward the circumferential edge of the yoke 31 . That is, in this embodiment, the covering portion 43 is bent from the outer periphery of the support portion 41 and then extends from the vertical wall 215 of the diaphragm 21 to the periphery of the yoke 31 . In this way, the overall volume of the speaker box can be reduced, and the gap between the covering part 43 and the periphery of the yoke 31 can be reduced to further reduce the leakage of the magnetic field.
  • the covering portion 43 can directly extend to the periphery of the yoke 31 and fit thereto. This can further reduce the gap between the covering portion 43 and the periphery of the yoke 31 to further reduce the leakage of the magnetic field.
  • the rear shell 5 is provided with a second sound outlet 70 passing through it, and at the same time, a second breathable isolator 8 is also provided at the position of the second sound outlet 70 .
  • the elastic fixing member 6 includes a first elastic fixing part 61 that is annular and fixed at the peripheral position of the rear case 5 . Parts of the inner peripheries of the first elastic fixing part 61 on opposite sides are directed toward the cavity 50 respectively.
  • the elastic extension part 62 is bent and extended inwards, the elastic support part 63 is bent and extended from the side of the elastic extension part 62 away from the first elastic fixing part 61 , and the elastic support part 63 is bent from the side away from the elastic extension part 62 .
  • the second elastic fixing portion 64 is folded, extended and fixed to the rear case 5 .
  • the elastic support part 63 is bent and extended from the elastic extension part 62 in a direction away from the first elastic fixing part 61
  • the second elastic fixing part 64 is bent and extended from the elastic support part 63 in a direction away from the sound-generating unit 100, and its The extended end is also bent and extended in a direction away from the elastic support portion 63 so as to be stably attached and fixed to the plane opposite the rear case 5 and the magnetic yoke.
  • the first elastic fixing part 61 and the elastic supporting part 63 are arranged parallel to each other, and both are perpendicular to the vibration direction of the vibration system 2 .
  • the sound-generating unit 100 is supported on the elastic fixing part 6 through the magnetic yoke 31 , that is, the side of the magnetic yoke 31 away from the magnetic circuit system 3 is elastically supported on the elastic support part 63 .
  • the elastic fixing part 6, the yoke 31 and the covering part 43 jointly seal the cavity 50 to form the back cavity 60, that is, the covering part 43 is respectively connected with the inner part of the first elastic fixing part 61 of the elastic fixing part 6.
  • the periphery and the inner surface of the elastic extension part 62 are arranged in close contact, so that the elastic fixing part 6 , the magnetic yoke 31 and the covering part 43 can seal the cavity 50 to form the rear cavity 60 .
  • the front cover 4 of the speaker box in the present invention includes an annular support part 41 fixed to the basin frame 1, a cover plate 42 spaced opposite to the vibration system 2, and a cover plate 42 extending from the outer peripheral edge of the support part 41 to the vibration system 2.
  • the annular covering portion 43 is bent and extended in a direction away from the cover plate 42 .
  • the covering portion 43 extends to the periphery of the yoke 31 and together with the yoke 31 completely wraps the secondary magnet steel 33 , allowing the sound-generating unit 100 to pass through.
  • the yoke 31 is elastically supported on the elastic fixing part 6.
  • the elastic fixing part 6, the yoke 31 and the covering part 43 jointly seal the cavity 50 of the rear case 5 to form the rear cavity 60, that is, through the covering part 43 of the front cover 4
  • the cavity 50 of the rear shell 5 can be sealed with the elastic fixing member 6 and the magnetic yoke 31 to form the rear cavity 60.
  • the sound-emitting unit 100 can be elastically supported directly through the elastic fixing member 6, which not only reduces the need for the front shell and the
  • the setting of the support foam simplifies the assembly process and reduces the production cost. It also simplifies the support design of the sound-emitting unit 100 and expands the space of the rear cavity 60. At the same time, the overall size is reduced to that of the single unit, saving layout space.
  • Waterproof double-sided tape can also be attached to the lower support part 41 for waterproofing, thereby reducing the height of the whole machine.
  • the covering part 43 of the front cover 4 cooperates with the yoke 31 to connect the main magnet 32 and the auxiliary magnet.
  • the steel 33 is completely wrapped to reduce the leakage of the magnetic field. This eliminates the need to glue the peripheral part of the yoke 31 and simplifies the assembly process of the sound unit 100.

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

Abstract

本发明提供了一种扬声器箱，包括具有腔体的后壳、固定于所述后壳的弹性固定件、支撑于所述弹性固定件的发声单体，所述发声单体的正投影位于所述腔体内；所述发声单体包括包括盆架、振动系统和磁路系统以及与所述振动系统围成前腔的前盖；所述磁路系统包括磁轭、主磁钢以及副磁钢；所述前盖包括支撑部、盖板以及包覆部；所述包覆部延伸至所述磁轭的周缘并与所述磁轭共同将所述副磁钢完全包裹；所述弹性固定件、所述磁轭以及所述包覆部共同将所述腔体密封以形成后腔。本发明的扬声器箱可以减少零件，缩小整机尺寸，扩大后腔空间，降低整机高度，减少磁场的泄露，并简化组装工序。

Description

扬声器箱 技术领域
本发明属于声电技术领域，尤其涉及一种扬声器箱。
 背景技术
扬声器箱是一种把电信号转变为声信号的换能器件，常应用于可发声的小型电子设备，如手机、笔记本电脑、平板电脑等。
现有的扬声器箱主要包括前壳、与前壳组配形成收容空间的后壳、收容固定于收容空间内的发声单体以及固定于后壳的金属弹片和支撑泡棉，前壳、后壳以及发声单体共同围成后腔，发声单体固定于金属弹片以及支撑泡棉。这种扬声器箱不仅需要前壳配合后壳以及发声单体共同围成后腔，还需要金属弹片和支撑泡棉共同对发声单体进行弹性支撑，从而导致其零件过多，尺寸过大，后腔空间较小。
另外，发声单体包括盆架、分别固定于盆架的振动系统和驱动所述振动系统振动的磁路系统以及盖设于所述盆架并与所述振动系统围成前腔的前盖，其中，前盖的防水双面胶只能贴设于其最高平面进行密封，使其整机高度过大。
磁路系统根据实际需求可以分为单磁路结构、三磁路结构以及五磁路结构等，其中，单磁路结构包括磁碗以及收容固定于所述磁碗的磁钢。
现有的发声单体由于形状、成本及驱动力等需求，其磁碗翻边时并不能包裹住磁钢，这导致了大量的磁场泄露，因此，为了减少磁场泄露而导致整体结构出现抖动的现象，还需要对磁碗的周缘部分进行补胶，这使得扬声器箱的制备工序复杂，且浪费时间。
 技术问题
本发明要解决的技术问题是如何提供一种零件少，尺寸小，后腔空间大，整机高度小，且其发声单体无需对磁轭的周缘部分进行补胶便可以减少磁场泄露的扬声器箱。
 技术解决方案
本发明是这样实现的，提供了一种扬声器箱，包括具有腔体的后壳、固定于所述后壳的弹性固定件、支撑于所述弹性固定件并与所述后壳间隔设置的发声单体，所述发声单体的正投影位于所述腔体内；所述发声单体包括包括盆架、分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统以及盖设于所述盆架并与所述振动系统围成前腔的前盖，所述盆架、所述振动系统以及所述磁路系统共同围成发声内腔；所述磁路系统包括磁轭、固定于所述磁轭靠近所述振动系统的一侧的主磁钢以及间隔环绕所述主磁钢设置并与所述主磁钢共同围成磁间隙的副磁钢，所述发声单体通过所述磁轭支撑于所述弹性固定件；所述前盖包括呈环状且固定于所述盆架的支撑部、与所述振动系统间隔相对的盖板以及由所述支撑部的外周缘向远离所述盖板的方向弯折延伸且呈环状的包覆部，所述盖板的周缘与所述支撑部的内周缘连接；所述盖板设置有贯穿其上的第一出声孔，所述包覆部延伸至所述磁轭的周缘并与所述磁轭共同将所述副磁钢完全包裹；所述弹性固定件、所述磁轭以及所述包覆部共同将所述腔体密封以形成后腔。
更进一步地，所述包覆部沿垂直于所述振动系统的振动方向向所述磁路系统的正投影完全覆盖所述副磁钢且至少部分覆盖所述磁轭。
更进一步地，所述盆架位于所述磁路系统靠近所述振动系统的一侧，且与所述副磁钢固定连接。
更进一步地，所述包覆部由所述支撑部的外周缘弯折后贴合于所述盆架的外周侧和所述副磁钢的外周侧向所述磁轭的周缘延伸。
更进一步地，所述盖板包括与所述振动系统间隔相对的盖板本体和由所述盖板本体的周缘向所述支撑部延伸并连接至所述支撑部的内周缘的延伸壁；所述第一出声孔设置所述盖板本体上。
更进一步地，所述磁路系统还包括叠设于所述主磁钢靠近所述振动系统的一侧的主极芯以及盖设固定于所述副磁钢靠近所述振动系统的一侧的上夹板，所述盆架固定于所述上夹板远离所述副磁钢的一侧，所述上夹板位于所述包覆部围成的空间内；所述上夹板包括呈环状且固定于所述盆架的固定环以及由所述固定环向靠近所述主极芯的方向水平延伸并叠设于所述副磁钢上的副极芯。
更进一步地，所述振动系统包括固定于所述盆架的振膜、插设悬置于所述磁间隙内以驱动所述振膜振动的音圈以及固定于所述盆架并与所述振膜相对且间隔设置的弹性件；所述弹性件与所述音圈远离所述振膜的一端连接，所述支撑部将所述振膜压设固定于所述盆架。
更进一步地，所述振膜包括折环、由所述折环的内周缘延伸形成的振动部、贴设于所述振动部的球顶、由所述折环的外周缘延伸形成的固定部以及由所述固定部向靠近所述盆架的方向弯折延伸形成的垂直壁；所述音圈固定于所述振动部靠近所述磁路系统的一侧；所述支撑部固定于所述固定部，所述包覆部由所述支撑部的外周缘弯折后紧贴所述垂直壁向所述磁轭的周缘延伸。
更进一步地，所述弹性件为FPC，所述弹性件为两个且分别设于所述盆架相对的两侧；每一所述弹性件包括固定于所述盆架的第一固定臂、分别固定于所述音圈远离所述振膜的一侧并与所述音圈电连接的两个第二固定臂以及由所述第一固定臂的两端分别向两个所述第二固定臂延伸并形成固定连接的两个弹臂；其中一个所述弹性件的所述第一固定臂设置有向远离所述音圈的方向延伸并贯穿所述包裹部的接引部，所述接引部用于为所述音圈引入外部电信号。
更进一步地，所述弹性固定件包括呈环状且固定于所述后壳的周缘位置的第一弹性固定部、由所述第一弹性固定部的相对两侧的部分内周缘分别向所述腔体内弯折延伸形成的弹性延伸部、由所述弹性延伸部远离所述第一弹性固定部的一侧弯折延伸形成的弹性支撑部、由所述弹性支撑部远离所述弹性延伸部的一侧弯折延伸并固定于所述后壳的第二弹性固定部，所述磁轭支撑于所述弹性支撑部。
 有益效果
与现有技术相比，本发明中扬声器箱的前盖包括呈环状且固定于盆架的支撑部、与振动系统间隔相对的盖板以及由支撑部的外周缘向远离盖板的方向弯折延伸且呈环状的包覆部，且包覆部延伸至磁轭的周缘并与磁轭共同将副磁钢完全包裹，发声单体通过磁轭弹性支撑于弹性固定件，弹性固定件、磁轭以及包覆部共同将后壳的腔体密封以形成后腔，即通过前盖的包覆部便可以配合弹性固定件以及磁轭将后壳的腔体密封以形成后腔，通过弹性固定件便可以直接对发声单体进行弹性支撑，这样不仅减少了前壳和支撑泡棉的设置，简化了组装工序，降低了生产成本，还简化了发声单体的支撑设计，扩大了后腔空间，同时外形尺寸减小为了单体外形尺寸，节约了布置空间，还可以将防水双面胶贴设于较低的支撑部平面进行防水，从而降低整机高度，另外，前盖的包覆部配合磁轭便可以将主磁钢及副磁钢完全包裹住，以减少磁场的泄露，这样便无需对磁轭的周缘部分进行补胶，简化了发声单体的组装工序。
 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术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他的附图。
图1是本发明实施例提供的一种扬声器箱的结构分解示意图；
图2是本发明实施例提供的一种扬声器箱的整体结构示意图；
图3是图2中A-A线的剖视图；
图4是图2中B-B线的剖视图。
其中：100、发声单体;1、盆架；2、振动系统；21、振膜；211、折环；212、振动部；213、球顶；214、固定部；215、垂直壁；22、音圈；23、弹性件；231、第一固定臂；232、第二固定臂；233、弾臂；234、接引部；3、磁路系统；31、磁轭；32、主磁钢；33、副磁钢；34、主极芯；35、上夹板；351、固定环；352、副极芯；4、前盖；41、支撑部；42、盖板；421、延伸壁；422、盖板本体；43、包覆部；5、后壳；6、弹性固定件；61、第一弹性固定部；62、弹性延伸部；63、弹性支撑部；64、第二弹性固定部；7、第一透气隔离件；8、第二透气隔离件；10、前腔；20、发声内腔；30、磁间隙；40、第一出声孔；50、腔体；60、后腔；70、第二出声孔。
 本发明的实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
结合图1至图4所示，本发明实施例提供了一种扬声器箱，其包括具有腔体50的后壳5、固定于后壳5的弹性固定件6、支撑于弹性固定件6并与后壳5间隔设置的发声单体100，发声单体100的正投影位于腔体50内；发声单体100包括包括盆架1、分别固定于盆架1的振动系统2和驱动振动系统2振动发声的磁路系统3以及盖设于盆架1并与振动系统2围成前腔10的前盖4；盆架1、振动系统2以及磁路系统3共同围成发声内腔20，前盖4设置有贯穿其上的第一出声孔40。
本实施例中，盆架1为矩形框架，当然，根据实际需求，其还可以选用其它形状的框架，如椭圆形框架、梯形框架等。
本实施例中，振动系统2包括固定于盆架1的振膜21、插设悬置于磁路系统3中的磁间隙30内以驱动振膜21振动的音圈22以及固定于盆架1并与振膜21相对且间隔设置的弹性件23。
其中，弹性件23与音圈22远离振膜21的一端电连接。
本实施例中，振膜21包括折环211、由折环211的内周缘延伸形成的振动部212、贴设于振动部212的球顶213、由折环211的外周缘延伸形成的固定部214以及由固定部214向靠近盆架1的方向弯折延伸形成的垂直壁215；音圈22固定于振动部212靠近磁路系统3的一侧。
其中，前盖4与振膜21的折环211、振动部212以及球顶213共同围成前腔10。
折环211向远离前盖4的方向弯折，这样可以在有限的布置空间内，增加折环211与前盖4的间隔距离，即增加前腔10的空间，以提升扬声器箱的声学性能。
本实施例中，弹性件23为FPC（柔性线路板），弹性件23为两个且分别设于盆架1相对的两侧；每一弹性件23包括固定于盆架1的第一固定臂231、分别固定于音圈22远离振膜21的一侧并与音圈22电连接的两个第二固定臂232以及由第一固定臂231的两端分别向两个第二固定臂232延伸并形成固定连接的两个弹臂233。
其中，音圈22为矩形结构，每个弹性件23中的两个第一固定臂231分别固定于音圈22相邻的两个角部位置。
本实施例中，磁路系统3包括磁轭31、固定于磁轭31靠近振动系统2的一侧的主磁钢32以及间隔环绕主磁钢32设置并与主磁钢32共同围成磁间隙30的副磁钢33。
其中，副磁钢33为四个，且两两一对设置在主磁钢32相对的两侧。当然，根据实际需求也可以只设置两个。
本实施例中，盆架1位于磁路系统3靠近振动系统2的一侧，且与副磁钢33固定连接。
本实施例中，磁路系统3还包括叠设于主磁钢32靠近振膜21的一侧的主极芯34以及固定于盆架1并盖设固定于副磁钢33靠近振膜21的一侧的上夹板35；上夹板35包括呈环状且固定于盆架1的固定环351以及由固定环351向靠近主极芯34的方向水平延伸并叠设于副磁钢33上的副极芯352。
其中，副极芯352为四个并与四个副磁钢33一一对应。
本实施例中，盆架1固定于上夹板35中固定环351远离副磁钢33的一侧，即盆架1间接与副磁钢33固定连接。
本实施例中，弹性件23的第一固定臂231固定于固定环351远离盆架1的一侧，即弹性件23通过上夹板35间接固定于盆架1。
本实施例中，前盖4包括呈环状且固定于盆架1的支撑部41、由振动系统2间隔相对的盖板42以及由支撑部41的外周缘向远离盖板42的方向弯折延伸且呈环状的包覆部43，盖板41的周缘与支撑部41的内周缘连接；包覆部43延伸至磁轭31的周缘并与磁轭31共同将副磁钢33完全包裹。
其中，包覆部43延伸至磁轭31的周缘并与磁轭31共同包裹副磁钢33，这样可以通过包覆部43配合磁轭31减少主磁钢32与副磁钢33形成的磁场的泄露，且无需对磁轭31的周缘部分进行补胶，简化了扬声器箱的制备工序。
本实施例中，盖板42包括与振动系统1间隔相对的盖板本体422和由盖板本体422的周缘向支撑部41延伸并连接至支撑部41的内周缘的延伸壁421。
其中，盖板本体422与振膜21的球顶213、振动部212及部分折环211间隔相对。
第一出声孔40设置盖板本体422上，同时，第一出声孔40盖设有第一透气隔离件7。
支撑部41、延伸壁421以及盖板本体422与振膜21共同围成前腔10。
支撑部41将振膜21的固定部214压设固定于盆架1远离磁路系统3的一侧，即支撑部41通过振膜21的固定部214间接固定于盆架1。
其中一个弹性件23的第一固定臂231设置有向远离音圈22的方向延伸并依次贯穿包覆部43以及后壳5的接引部234，接引部234用于为音圈22引入外部电信号。
上夹板35位于包覆部43围成的空间内。
本实施例中，包覆部42沿垂直于振膜21的振动方向向磁路系统3的正投影完全覆盖副磁钢33且至少部分覆盖磁轭31。这个可以更好的将副磁钢33包裹于包覆部43与磁轭31形成的空间内，以更好的减少磁场的泄露。
更进一步地，包覆部43由支撑部41的外周缘弯折后贴合于盆架1的外周侧和副磁钢33的外周侧向磁轭31的周缘延伸。即本实施例中，包覆部43由支撑部41的外周缘弯折后紧贴振膜21的垂直壁215向磁轭31的周缘延伸。这样可以缩小扬声器箱的整体体积，并缩小包覆部43与磁轭31周缘之间的间隙，以进一步的减少磁场的泄露。
其中，包覆部43可以直接延伸至磁轭31的周缘并与其贴合，这样可以进一步缩小包覆部43与磁轭31周缘之间的间隙，以更进一步的减少磁场的泄露。
本实施例中，后壳5设置有贯穿其上的第二出声孔70，同时，第二出声孔70的位置还设置有第二透气隔离件8。
本实施例中，弹性固定件6包括呈环状且固定于后壳5的周缘位置的第一弹性固定部61、由第一弹性固定部61的相对两侧的部分内周缘分别向腔体50内弯折延伸形成的弹性延伸部62、由弹性延伸部62远离第一弹性固定部61的一侧弯折延伸形成的弹性支撑部63、由弹性支撑部63远离弹性延伸部62的一侧弯折延伸并固定于后壳5的第二弹性固定部64。
其中，弹性支撑部63由弹性延伸部62向远离第一弹性固定部61的方向弯折延伸，第二弹性固定部64由弹性支撑部63向远离发声单体100的方向弯折延伸，且其延伸的端部还向远离弹性支撑部63的方向弯折延伸，以便稳定的贴设固定于后壳5与磁轭相对的平面上。第一弹性固定部61与弹性支撑部63相互平行设置，且均垂直于振动系统2的振动方向。
本实施例中，发声单体100通过磁轭31支撑于弹性固定件6，即磁轭31远离磁路系统3的一侧弹性支撑于弹性支撑部63。
本实施例中，弹性固定件6、磁轭31以及包覆部43共同将腔体50密封以形成后腔60，即包覆部43分别与弹性固定件6中第一弹性固定部61的内周缘以及弹性延伸部62的内侧面贴合设置，这样弹性固定件6、磁轭31以及包覆部43便可以将腔体50密封以形成后腔60。
与现有技术相比，本发明中扬声器箱的前盖4包括呈环状且固定于盆架1的支撑部41、与振动系统2间隔相对的盖板42以及由支撑部41的外周缘向远离盖板42的方向弯折延伸且呈环状的包覆部43，且包覆部43延伸至磁轭31的周缘并与磁轭31共同将副磁钢33完全包裹，发声单体100通过磁轭31弹性支撑于弹性固定件6，弹性固定件6、磁轭31以及包覆部43共同将后壳5的腔体50密封以形成后腔60，即通过前盖4的包覆部43便可以配合弹性固定件6以及磁轭31将后壳5的腔体50密封以形成后腔60，通过弹性固定件6便可以直接对发声单体100进行弹性支撑，这样不仅减少了前壳和支撑泡棉的设置，简化了组装工序，降低了生产成本，还简化了发声单体100的支撑设计，扩大了后腔60空间，同时外形尺寸减小为了单体外形尺寸，节约了布置空间，还可以将防水双面胶贴设于较低的支撑部41平面进行防水，从而降低整机高度，另外，前盖4的包覆部43配合磁轭31便可以将主磁钢32及副磁钢33完全包裹住，以减少磁场的泄露，这样便无需对磁轭31的周缘部分进行补胶，简化了发声单体100的组装工序。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种扬声器箱，其特征在于，包括具有腔体的后壳、固定于所述后壳的弹性固定件、支撑于所述弹性固定件并与所述后壳间隔设置的发声单体，所述发声单体的正投影位于所述腔体内；所述发声单体包括盆架、分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统以及盖设于所述盆架并与所述振动系统围成前腔的前盖，所述盆架、所述振动系统以及所述磁路系统共同围成发声内腔；所述磁路系统包括磁轭、固定于所述磁轭靠近所述振动系统的一侧的主磁钢以及间隔环绕所述主磁钢设置并与所述主磁钢共同围成磁间隙的副磁钢，所述发声单体通过所述磁轭支撑于所述弹性固定件；所述前盖包括呈环状且固定于所述盆架的支撑部、与所述振动系统间隔相对的盖板以及由所述支撑部的外周缘向远离所述盖板的方向弯折延伸且呈环状的包覆部，所述盖板的周缘与所述支撑部的内周缘连接，所述盖板设置有贯穿其上的第一出声孔，所述包覆部延伸至所述磁轭的周缘并与所述磁轭共同将所述副磁钢完全包裹；所述弹性固定件、所述磁轭以及所述包覆部共同将所述腔体密封以形成后腔。
  2. 如权利要求1所述的扬声器箱，其特征在于，所述包覆部沿垂直于所述振动系统的振动方向向所述磁路系统的正投影完全覆盖所述副磁钢且至少部分覆盖所述磁轭。
  3. 如权利要求2所述的扬声器箱，其特征在于，所述盆架位于所述磁路系统靠近所述振动系统的一侧，且与所述副磁钢固定连接。
  4. 如权利要求3所述的扬声器箱，其特征在于，所述包覆部由所述支撑部的外周缘弯折后贴合于所述盆架的外周侧和所述副磁钢的外周侧向所述磁轭的周缘延伸。
  5. 如权利要求1所述的扬声器箱，其特征在于，所述盖板包括与所述振动系统间隔相对的盖板本体和由所述盖板本体的周缘向所述支撑部延伸并连接至所述支撑部的内周缘的延伸壁；所述第一出声孔设置所述盖板本体上。
  6. 如权利要求3所述的扬声器箱，其特征在于，所述磁路系统还包括叠设于所述主磁钢靠近所述振动系统的一侧的主极芯以及盖设固定于所述副磁钢靠近所述振动系统的一侧的上夹板，所述盆架固定于所述上夹板远离所述副磁钢的一侧，所述上夹板位于所述包覆部围成的空间内；所述上夹板包括呈环状且固定于所述盆架的固定环以及由所述固定环向靠近所述主极芯的方向水平延伸并叠设于所述副磁钢上的副极芯。
  7. 如权利要求4所述的扬声器箱，其特征在于，所述振动系统包括固定于所述盆架的振膜、插设悬置于所述磁间隙内以驱动所述振膜振动的音圈以及固定于所述盆架并与所述振膜相对且间隔设置的弹性件；所述弹性件与所述音圈远离所述振膜的一端连接，所述支撑部将所述振膜压设固定于所述盆架。
  8. 如权利要求7所述的扬声器箱，其特征在于，所述振膜包括折环、由所述折环的内周缘延伸形成的振动部、贴设于所述振动部的球顶、由所述折环的外周缘延伸形成的固定部以及由所述固定部向靠近所述盆架的方向弯折延伸形成的垂直壁；所述音圈固定于所述振动部靠近所述磁路系统的一侧；所述支撑部固定于所述固定部，所述包覆部由所述支撑部的外周缘弯折后紧贴所述垂直壁向所述磁轭的周缘延伸。
  9. 如权利要求7所述的扬声器箱，其特征在于，所述弹性件为FPC，所述弹性件为两个且分别设于所述盆架相对的两侧；每一所述弹性件包括固定于所述盆架的第一固定臂、分别固定于所述音圈远离所述振膜的一侧并与所述音圈电连接的两个第二固定臂以及由所述第一固定臂的两端分别向两个所述第二固定臂延伸并形成固定连接的两个弹臂；其中一个所述弹性件的所述第一固定臂设置有向远离所述音圈的方向延伸并贯穿所述包裹部的接引部，所述接引部用于为所述音圈引入外部电信号。
  10. 如权利要求1所述的扬声器箱，其特征在于，所述弹性固定件包括呈环状且固定于所述后壳的周缘位置的第一弹性固定部、由所述第一弹性固定部的相对两侧的部分内周缘分别向所述腔体内弯折延伸形成的弹性延伸部、由所述弹性延伸部远离所述第一弹性固定部的一侧弯折延伸形成的弹性支撑部、由所述弹性支撑部远离所述弹性延伸部的一侧弯折延伸并固定于所述后壳的第二弹性固定部，所述磁轭支撑于所述弹性支撑部。
PCT/CN2022/128545 2022-08-30 2022-10-31 扬声器箱 WO2024045311A1 (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140014434A1 (en) * 2012-07-12 2014-01-16 Wistron Corporation Speaker device with vibration absorbing function and audio display device therewith
CN111935618A (zh) * 2020-08-31 2020-11-13 歌尔股份有限公司 扬声器
CN212752625U (zh) * 2020-08-31 2021-03-19 歌尔股份有限公司 扬声器
WO2022007026A1 (zh) * 2020-07-08 2022-01-13 瑞声声学科技(深圳)有限公司 扬声器装置及移动终端设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140014434A1 (en) * 2012-07-12 2014-01-16 Wistron Corporation Speaker device with vibration absorbing function and audio display device therewith
WO2022007026A1 (zh) * 2020-07-08 2022-01-13 瑞声声学科技(深圳)有限公司 扬声器装置及移动终端设备
CN111935618A (zh) * 2020-08-31 2020-11-13 歌尔股份有限公司 扬声器
CN212752625U (zh) * 2020-08-31 2021-03-19 歌尔股份有限公司 扬声器

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