WO2021174573A1 - 扬声器箱 - Google Patents

扬声器箱 Download PDF

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Publication number
WO2021174573A1
WO2021174573A1 PCT/CN2020/078769 CN2020078769W WO2021174573A1 WO 2021174573 A1 WO2021174573 A1 WO 2021174573A1 CN 2020078769 W CN2020078769 W CN 2020078769W WO 2021174573 A1 WO2021174573 A1 WO 2021174573A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
cavity
magnetic
sound
leakage hole
Prior art date
Application number
PCT/CN2020/078769
Other languages
English (en)
French (fr)
Inventor
令狐荣林
肖波
章统
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 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 WO2021174573A1 publication Critical patent/WO2021174573A1/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
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting
    • 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 invention relates to the field of sound and electricity, in particular to a speaker box used in portable electronic products.
  • the speaker box includes a box body with an accommodating cavity and a sound device arranged in the box body, and a sound hole is penetrated through the box body.
  • the sound emitting device in the related art only has one sound emitting surface, which is not conducive to the improvement of the sensitivity of the speaker box.
  • the object of the present invention is to provide a speaker box, which can increase the effective vibration area, thereby improving the sensitivity of the speaker box.
  • the present invention provides a loudspeaker box, which includes a box body with a containing cavity and a sound emitting device.
  • a sound hole communicating with the front cavity is penetrated on the box body, a monomer leakage hole communicating with the rear cavity is penetrated on the partition plate, and the sound generating device is suspended in the front cavity,
  • the sounding device includes a basin frame abutting with the partition, a vibration system fixed on the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and emit sound.
  • the vibration system includes an upper diaphragm and a lower diaphragm which are respectively fixed on opposite sides of the basin frame and have opposite vibration directions, and drive the upper diaphragm
  • the upper voice coil that vibrates and produces sound and the lower voice coil that drives the lower diaphragm to vibrate and produce sound The upper diaphragm, the lower diaphragm, and the frame surround form an accommodation space for accommodating the magnetic circuit system.
  • the magnetic circuit system includes a first magnetic part, a second magnetic part arranged around the first magnetic part and forming an inner magnetic gap with the first magnetic part, arranged around the second magnetic part and connected to the A third magnetic part forming an outer magnetic gap between the second magnetic parts, a first pole core fixed on the side of the first magnetic part facing the upper diaphragm, fixed on the second magnetic part and The second pole core on the side of the third magnetic part facing the upper diaphragm and the third pole core fixed on the side of the first magnetic portion and the second magnetic portion facing the lower diaphragm ,
  • the second magnetic part is in a continuous ring structure, the second pole core is fixed to the basin frame, the upper voice coil is inserted into the inner magnetic gap, and the lower voice coil is inserted into the outer magnetic In the gap, wherein the second pole core, the third pole core, and the second magnetic part separate the accommodating space into an upper cavity communicating with the first leak hole and an upper cavity communicating with the second The lower cavity connected by the leak hole.
  • the second leakage hole is located at a position of the basin frame corresponding to the magnetic circuit system, and the third magnetic part has a leakage passage connecting the outer magnetic gap and the second leakage hole.
  • the third magnetic portion is composed of a plurality of third permanent magnets arranged around the second magnetic portion, and two adjacent third permanent magnets are arranged at intervals, wherein the one adjacent to the second leakage hole The two third permanent magnets are arranged at intervals to form the leakage channel.
  • the lower voice coil and the lower diaphragm are connected by a skeleton, and the skeleton includes a first connecting portion connected with the lower diaphragm, a second connecting portion connected with the lower voice coil, and a connecting seat.
  • the first connecting portion and the third connecting portion of the second connecting portion are connected with the skeleton, and the skeleton includes a first connecting portion connected with the lower diaphragm, a second connecting portion connected with the lower voice coil, and a connecting seat.
  • both the first connecting portion and the second connecting portion have a ring structure.
  • the skeleton is an integrally formed structure.
  • the vibration system further includes an upper dome and a lower dome arranged in the receiving space, and the upper dome is respectively connected to the upper diaphragm and the upper sound at two opposite sides in the vibration direction. Ring connection, the opposite sides of the lower dome in the vibration direction are respectively connected with the first connecting portion and the lower diaphragm.
  • the magnetic circuit system further includes a fourth pole core fixed on the side of the third magnetic part facing the lower diaphragm, and the fourth pole core is fixed to the basin frame.
  • the sound emitting device further includes an upper end cover and a lower end cover, the upper diaphragm is sandwiched between the basin frame and the upper end cover, and the upper end cover is provided for the upper diaphragm to emit sound outwards.
  • the lower diaphragm is sandwiched between the basin frame and the lower end cover, and the lower end cover has a second sound hole for the lower diaphragm to emit sound outward.
  • the box body includes an upper bottom surface opposite to the upper end cover and spaced apart, and a lower bottom surface opposite to the lower end cover and spaced apart, and a plurality of second bottom surfaces supporting the upper end cover are provided on the upper bottom surface
  • a cushion block, a plurality of second cushion blocks supporting the lower end cover are arranged on the lower bottom surface.
  • the speaker box of the present invention arranges the upper diaphragm and the lower diaphragm to vibrate in opposite directions and is driven by the upper voice coil and the lower voice coil respectively, and the sound is generated.
  • the device is arranged to be suspended in the front cavity, so that the sound generated by the vibration of the upper diaphragm and the lower diaphragm is transmitted to the outside of the speaker box through the sound outlet, so that the effective vibration area of the speaker box It is greatly improved to improve the sensitivity of the speaker box; at the same time, when the upper diaphragm and the lower diaphragm vibrate, the airflow in the upper cavity can pass through the first leak hole and the monomer leak hole and the The rear cavity circulates, and the airflow in the lower cavity can circulate with the rear cavity through the second leakage hole and the monomer leakage hole.
  • the upper cavity and the lower cavity are not connected to each other, so that the upper diaphragm and the lower diaphragm do not affect each other during the vibration process.
  • the upper voice coil and the lower voice coil into the inner magnetic gap and the outer magnetic gap of the magnetic circuit system, respectively, the upper diaphragm and the lower diaphragm share the same
  • the magnetic circuit system improves the utilization rate of the magnetic circuit.
  • Figure 1 is a perspective view of a preferred embodiment of the speaker box of the present invention.
  • Figure 2 is a cross-sectional view of the speaker box shown in Figure 1 along the A-A direction;
  • Figure 3 is a cross-sectional view of the speaker box shown in Figure 1 along the B-B direction;
  • Fig. 4 is a schematic diagram of the structure of the sound emitting device in the speaker box shown in Fig. 2;
  • FIG. 5 is a schematic diagram of the structure of the sound emitting device in the speaker box shown in FIG. 3;
  • Fig. 6 is a three-dimensional exploded view of the sound generating device shown in Fig. 5;
  • FIG. 7 is a schematic structural diagram of part of the structure of the sound generating device shown in FIG. 6 after being assembled;
  • FIG. 8 is a schematic diagram of the assembled structure of the magnetic circuit system in the sound generating device shown in FIG. 6;
  • Fig. 9 is a schematic structural diagram of the magnetic circuit system shown in Fig. 8 from another angle.
  • the speaker box includes a box body 100 having an accommodating cavity 100A and a sound emitting device 200 arranged in the box body 100.
  • the box body 100 is provided with a partition 101 that divides the containing chamber 100A into a front chamber 100B and a rear chamber 100C, and the partition 101 is provided with a monomer leakage hole 102 communicating with the rear chamber 100C.
  • the box body 100 is provided with a sound outlet 103 communicating with the front cavity 100B, and the sound emitting device 200 is suspended in the front cavity 100B.
  • the sound generating device 200 includes a basin frame 1 abutting against the partition 101, a vibration system 3 fixed to the basin frame 1, and a magnetic circuit system 5 that drives the vibration system 3 to vibrate and produce sound.
  • the basin frame 1 has a rectangular structure.
  • the basin frame 1 is provided with a first leakage hole 1A and a second leakage hole 1B communicating with the monomer leakage hole 102 through it.
  • the first leak hole 1A and the second leak hole 1B are located on the side wall of the basin frame 1 abutting the partition 101 so that the first leak hole 1A and the second leak hole 1A
  • the leakage hole 1B communicates with the monomer leakage hole 102.
  • the monomer leakage hole 102 includes a first monomer leakage hole 102A communicating with the first leakage hole 1A and a second monomer leakage hole 102B communicating with the second leakage hole 1B,
  • the first monomer leakage hole 102A and the second monomer leakage hole 102B are spaced apart.
  • the first monomer leak hole 102A and the second monomer leak hole 102B can also be opened to form a leak hole.
  • the vibration system 3 includes an upper diaphragm 31, a lower diaphragm 33, an upper voice coil 34, a lower voice coil 35, and a frame 36.
  • the upper diaphragm 31 and the lower diaphragm 33 are respectively fixed to the basin frame 1.
  • the vibration directions of the upper diaphragm 31 and the lower diaphragm 33 are opposite, and the upper diaphragm 31, the lower diaphragm 33, and the basin frame 1 are enclosed to form a receiving space 200A
  • the magnetic circuit system 5 is housed in the housing space 200A, and the magnetic circuit system 5 divides the housing space 200A into an upper cavity 200B communicating with the first leak hole 1A and an upper cavity 200B communicating with the second leakage hole 1A.
  • the lower cavity 200C communicated with the leakage hole 1B, the upper voice coil 34 drives the upper diaphragm 31 to vibrate and produce sound, the lower voice coil 35 drives the lower diaphragm 33 to vibrate and produce sound, and the frame 36 is connected to the lower diaphragm.
  • the voice coil 35 and the lower diaphragm 33 are connected to the leakage hole 1B, the upper voice coil 34 drives the upper diaphragm 31 to vibrate and produce sound, the lower voice coil 35 drives the lower diaphragm 33 to vibrate and produce sound, and the frame 36 is connected to the lower diaphragm.
  • the voice coil 35 and the lower diaphragm 33 are connected to the lower diaphragm.
  • the opposite vibration directions of the upper diaphragm 31 and the lower diaphragm 33 mean that the instantaneous vibration directions are opposite. Specifically, when the upper diaphragm 31 vibrates in a direction away from the magnetic circuit system 5, the lower diaphragm 33 also vibrates in a direction away from the magnetic circuit system 5; the upper diaphragm 31 vibrates in a direction closer to the magnetic circuit system 5. When the circuit system 5 vibrates, the lower diaphragm 33 also vibrates in a direction close to the magnetic circuit system 5.
  • the frame 36 includes a first connecting portion 361 connected to the lower diaphragm 33, a second connecting portion 362 connected to the lower voice coil 35, and connecting the first connecting portion 361 and the second connecting portion 362 ⁇ third connection part 363.
  • first connecting portion 361 and the second connecting portion 362 both have a ring structure. It can be understood that the implementation of the first connecting portion 361 and the second connecting portion 362 is not limited to this; for example, in other embodiments, the first connecting portion 361 may be provided in a flat plate shape; The second connecting portion 362 may be configured to be composed of multiple split structures, and each split structure is connected to the lower voice coil 35 respectively.
  • the skeleton 36 is an integrally formed structure. It can be understood that, in other embodiments, the first connecting portion 361, the second connecting portion 362, and the third connecting portion 363 may be formed by welding.
  • the vibration system 3 further includes an upper dome 37 and a lower dome 38 arranged in the receiving space 200A, and the upper dome 37 is opposite to each other on opposite sides of the vibration direction X.
  • the upper diaphragm 31 is connected to the upper voice coil 34
  • the lower dome 38 is connected to the first connecting portion 361 and the lower diaphragm 33 on opposite sides along the vibration direction X, respectively.
  • the upper dome 37 and the lower dome 38 may also be arranged outside the receiving space 200A, and the upper diaphragm 31 is opposite to each other in the vibration direction X.
  • the sides are respectively connected to the upper voice coil 34 and the upper dome 37, and the lower diaphragm 33 is respectively connected to the lower dome 38 and the first connecting portion 361 along opposite sides of the vibration direction X .
  • the sound emitting device 200 further includes an upper end cover 7 and a lower end cover 9, and the upper diaphragm 31 is sandwiched between the basin frame 1 and the upper end cover 7.
  • the upper end cover 7 has a first sounding hole 71 for the upper diaphragm 31 to emit sound outward
  • the lower diaphragm 33 is sandwiched between the basin frame 1 and the lower end cover 9, and the lower end
  • the cover 9 has a second sound hole 91 for the lower diaphragm 33 to sound outward.
  • the arrangement of the upper end cover 7 and the lower end cover 9 can better fix the upper diaphragm 31 and the lower diaphragm 33 on the basin frame 1.
  • the box body 100 includes an upper bottom surface 104 opposite to the upper end cover 7 and spaced apart, and a lower bottom surface 105 opposite to the lower end cover 9 and spaced apart.
  • the upper bottom surface 104 is provided with A plurality of first cushion blocks 106 supporting the upper end cover 7, and a plurality of second cushion blocks 107 supporting the lower end cover 9 are provided on the lower bottom surface 105.
  • the sound generating device 200 is suspended in the front cavity 100B through the supporting action of the plurality of first pad blocks 106 and the plurality of second pad blocks 107.
  • the first spacer block 106 and the second spacer block 107 are integrally formed with the box body 100. It is understood that, in other embodiments, the first spacer block 106 may also It is a cushion block fixed on the upper bottom surface 104, and the second cushion block 107 may also be a cushion block fixed on the lower bottom surface 105.
  • the magnetic circuit system 5 includes a first magnetic portion 51, a second magnetic portion 52 disposed around the first magnetic portion 51 and forming an inner magnetic gap 5A between the first magnetic portion 51, and surrounding the second magnetic portion 51.
  • the third magnetic portion 53 which is provided with the magnetic portion 52 and forms an outer magnetic gap 5B with the second magnetic portion 52, and is fixed on the first magnetic portion 51 on the side of the first magnetic portion 51 facing the upper diaphragm 31.
  • the second magnetic portion 52 faces the third pole core 56 on the side of the lower diaphragm 33, the second magnetic portion 52 has a continuous ring structure, and the second pole core 55 is fixed to the basin frame.
  • the upper voice coil 34 is inserted into the inner magnetic gap 5A
  • the lower voice coil 35 is inserted into the outer magnetic gap 5B, wherein the second pole core 55, the third pole core 56 and The second magnetic portion 52 divides the accommodating space 200A into an upper cavity 200B communicating with the first leakage hole 1A and a lower cavity 200C communicating with the second leakage hole 1B.
  • the upper voice coil 34 After the upper voice coil 34 is energized, under the magnetic force of the magnetic circuit system 5, the upper diaphragm 31 vibrates along with the upper voice coil 34; after the lower voice coil 35 is energized, the magnetic Under the action of the magnetic force of the circuit system 5, the lower diaphragm 33 and the skeleton 36 vibrate together with the lower voice coil 35.
  • the sound emitting device 200 is arranged to be suspended In the front cavity 100B, the sound generated by the vibration of the upper diaphragm 31 and the lower diaphragm 33 is transmitted to the outside of the speaker box through the sound outlet 103, so that the effective vibration area of the speaker box is greatly increased In order to improve the sensitivity of the speaker box; at the same time, when the upper diaphragm 31 and the lower diaphragm 33 vibrate, the airflow in the upper cavity 200B can pass through the first leakage hole 1A and the monomer leakage hole 102 circulates with the rear cavity 100C, and the airflow in the lower cavity 200C can circulate with the rear cavity 100C through the second leakage hole 1B and the monomer leakage hole 102.
  • the upper cavity 200B and the lower cavity 200C are separated by the second pole core 55, the third pole core 56 and the second magnetic portion 52, so that The upper diaphragm 31 and the lower diaphragm 33 do not affect each other during the vibration process.
  • the upper voice coil 34 and the lower voice coil 35 are inserted into the inner magnetic gap 5A and the outer magnetic gap 5B of the magnetic circuit system 5, respectively, the upper diaphragm 31 and the The lower diaphragm 33 shares the same magnetic circuit system, which improves the utilization rate of the magnetic circuit.
  • the magnetic circuit system 5 further includes a fourth pole core 57 fixed on the side of the third magnetic portion 53 facing the lower diaphragm 33, and the fourth pole core 57 is fixed on the side of the lower diaphragm 33.
  • the basin frame 1. Through the magnetic permeability of the first pole core 54, the second pole core 55, the third pole core 56, and the fourth pole core 57, the inner magnetic gap 5A and the outer magnetic gap 5B can be effectively increased. Therefore, the acoustic performance of the sound emitting device 200 can be improved, and it is also conducive to the light and thin design of the sound emitting device 200.
  • the second pole core 55 and the fourth pole core 57 are both fixed to the basin frame 1, the magnetic circuit system 5 can be better held on the basin frame 1.
  • first pole core 54 and the second pole core 55 are located on the same horizontal plane, and the third pole core 56 and the fourth pole core 57 are also located on the same horizontal plane.
  • the second leakage hole 1B is located at a position corresponding to the basin frame 1 and the magnetic circuit system 5, and the third magnetic portion 53 has a connection between the outer magnetic gap 5B and the first magnetic gap 5B.
  • the leakage passage 53A of the two leakage holes 1B That is, the second leakage hole 1B communicates with the lower cavity 200C through the outer magnetic gap 5B and the leakage passage 53A (that is, the second leakage hole 1B indirectly communicates with the lower cavity 200C ).
  • the second leakage hole 1B is located at a position corresponding to the basin frame 1 and the lower cavity 200C (that is, the second leakage hole 1B is directly connected to the lower cavity 200C).
  • the body 200C is connected), and accordingly, the third magnetic part may not have a leakage passage.
  • the third magnetic portion 53 is composed of a plurality of third permanent magnets arranged around the second magnetic portion 52, and two adjacent third permanent magnets are arranged at intervals. Wherein, the two third permanent magnets adjacent to the second leakage hole 1B are spaced apart to form the leakage passage 53A. It can be understood that, in other embodiments, the third magnetic portion 53 may also be a third permanent magnet having a ring structure. Accordingly, the position of the third permanent magnet corresponding to the second leakage hole is A leakage channel connecting the outer magnetic gap and the second leakage hole needs to be opened on the upper side.
  • the first magnetic part 51 is a first permanent magnet. It can be understood that, in other embodiments, the first magnetic portion 51 may also be formed by superimposing two, three, etc., first permanent magnets along the vibration direction X, and there is also a gap between two adjacent first permanent magnets. The pole core can be clamped.
  • the second magnetic portion 52 is a second permanent magnet. It is understandable that in other embodiments, the second magnetic portion 52 may be formed by superimposing two or three second permanent magnets in a continuous ring structure along the vibration direction X, and two adjacent second permanent magnets A pole core can also be sandwiched between the two permanent magnets.
  • the first permanent magnet, the second permanent magnet, and the third permanent magnet mentioned above are usually made of magnetic steel. It is understandable that the first permanent magnet, the second permanent magnet, and the third permanent magnet can also be natural magnets.
  • the speaker box of the present invention is provided by setting the upper diaphragm 31 and the lower diaphragm 33 to have opposite vibration directions and are driven by the upper voice coil 34 and the lower voice coil 35, respectively, and
  • the sound device 200 is arranged to be suspended in the front cavity 100B, so that the sound generated by the vibration of the upper diaphragm 31 and the lower diaphragm 33 is transmitted to the outside of the speaker box through the sound outlet 103 Therefore, the effective vibration area of the speaker box is greatly increased to improve the sensitivity of the speaker box; at the same time, when the upper diaphragm 31 and the lower diaphragm 33 vibrate, the airflow in the upper cavity 200B can pass through the first A leakage hole 1A and the monomer leakage hole 102 communicate with the rear cavity 100C, and the airflow in the lower cavity 200C can pass through the second leakage hole 1B and the monomer leakage hole 102 and the rear cavity 100C.
  • the cavity 100C circulates.
  • the upper cavity 200B and the lower cavity 200C are not connected to each other, so that the upper diaphragm 31 and the lower diaphragm 33 do not affect each other during the vibration process.
  • the upper voice coil 34 and the lower voice coil 35 are inserted into the inner magnetic gap 5A and the outer magnetic gap 5B of the magnetic circuit system 5, respectively, the upper diaphragm 31 and The lower diaphragm 33 shares the magnetic circuit system 5, thereby improving the utilization of the magnetic circuit.

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

Abstract

本发明提供了一种可以提高有效振动面积的扬声器箱，其包括具有容纳腔的箱体及发声器件，容纳腔被隔板分隔为前腔和后腔，隔板上设有与后腔连通的单体泄漏孔，箱体上贯穿设有与前腔连通的出声孔，发声器件悬置于前腔内，发声器件包括盆架、振动系统及磁路系统，盆架上设有与单体泄漏孔连通的第一泄漏孔和第二泄漏孔，振动系统包括分别固定于盆架的相对两侧且振动方向相反的上振膜和下振膜、驱动上振膜振动发声的上音圈、驱动下振膜振动发声的下音圈及连接下音圈和下振膜的骨架，上振膜、下振膜及盆架围合形成收容磁路系统的收容空间，磁路系统将收容空间划分为与第一泄漏孔连通的上腔体及与第二泄漏孔连通的下腔体，且上腔体和下腔体互不连通。

Description

扬声器箱 技术领域
本发明涉及声电领域，尤其涉及一种运用于便携式电子产品的扬声器箱。
 背景技术
随着移动互联网时代的到来，智能移动设备的数量不断上升。而在众多移动设备之中，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箱被大量应用到现在的智能移动设备之中。
扬声器箱包括具有容纳腔的箱体及设于所述箱体内的发声器件，所述箱体上贯穿设有出声孔。相关技术中的发声器件仅具有一个发声面，从而不利于扬声器箱灵敏度的提高。
因此，实有必要提供一种新的扬声器箱解决上述技术问题。
 技术问题
本发明的目的在于提供一种扬声器箱，该扬声器箱可以提高有效振动面积，从而可以提高扬声器箱的灵敏度。
 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箱，包括具有容纳腔的箱体及发声器件，所述箱体内设有将所述容纳腔分隔为前腔和后腔的隔板，所述箱体上贯穿设有与所述前腔连通的出声孔，所述隔板上贯穿设有与所述后腔连通的单体泄漏孔，所述发声器件悬置于所述前腔内，所述发声器件包括与所述隔板抵接的盆架以及固持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，所述盆架上贯穿设有与所述单体泄漏孔连通的第一泄漏孔和第二泄漏孔，所述振动系统包括分别固定于所述盆架的相对两侧且振动方向相反的上振膜和下振膜、驱动所述上振膜振动发声的上音圈及驱动所述下振膜振动发声的下音圈，所述上振膜、所述下振膜及所述盆架围合形成收容所述磁路系统的收容空间，所述磁路系统包括第一磁部、环绕所述第一磁部设置且与所述第一磁部之间形成内磁间隙的第二磁部、环绕所述第二磁部设置且与所述第二磁部之间形成外磁间隙的第三磁部、固设于所述第一磁部朝向所述上振膜一侧上的第一极芯、固设于所述第二磁部和所述第三磁部朝向所述上振膜一侧上的第二极芯及固定于所述第一磁部和所述第二磁部朝向所述下振膜一侧上的第三极芯，所述第二磁部呈连续的环状结构，所述第二极芯固定于所述盆架，所述上音圈插入所述内磁间隙内，所述下音圈插入所述外磁间隙内，其中，所述第二极芯、所述第三极芯及所述第二磁部将所述收容空间分隔为与所述第一泄漏孔连通的上腔体及与所述第二泄漏孔连通的下腔体。
优选地，所述第二泄漏孔位于所述盆架与所述磁路系统对应的位置上，所述第三磁部具有连通所述外磁间隙和所述第二泄漏孔的泄漏通道。
优选地，所述第三磁部由环绕所述第二磁部设置的多个第三永磁体构成，且相邻两所述第三永磁体间隔设置，其中，与所述第二泄漏孔相邻的两个所述第三永磁体间隔设置形成所述泄漏通道。
优选地，所述下音圈和所述下振膜通过骨架连接，所述骨架包括与所述下振膜连接的第一连接部、与所述下音圈连接的第二连接部及连接所述第一连接部和所述第二连接部的第三连接部。
优选地，所述第一连接部和所述第二连接部均呈环状结构。
优选地，所述骨架为一体成型结构。
优选地，所述振动系统还包括设于所述收容空间内的上球顶和下球顶，所述上球顶沿振动方向上的相对两侧分别与所述上振膜和所述上音圈连接，所述下球顶沿振动方向上的相对两侧分别与所述第一连接部和所述下振膜连接。
优选地，所述磁路系统还包括固定于所述第三磁部朝向所述下振膜一侧上的第四极芯，所述第四极芯固定于所述盆架。
优选地，所述发声器件还包括上端盖和下端盖，所述上振膜夹设于所述盆架和所述上端盖之间，所述上端盖具有用于所述上振膜向外发声的第一发声孔，所述下振膜夹设于所述盆架和所述下端盖之间，所述下端盖具有用于所述下振膜向外发声的第二发声孔。
优选地，所述箱体包括与所述上端盖相对且间隔设置的上底面及与所述下端盖相对且间隔设置的下底面，所述上底面上设有支撑所述上端盖的多个第一垫块，所述下底面上设有支撑所述下端盖的多个第二垫块。
 有益效果
与相关技术相比，本发明的扬声器箱通过将所述上振膜和所述下振膜设置成振动方向相反并分别由所述上音圈和所述下音圈驱动，且将所述发声器件设置成悬置于所述前腔内，使得所述上振膜和所述下振膜振动发出的声音通过所述出声孔传至所述扬声器箱外，从而使得扬声器箱的有效振动面积大幅提高以提高扬声器箱的灵敏度；同时，所述上振膜和所述下振膜振动时，所述上腔体内的气流能通过所述第一泄漏孔和所述单体泄漏孔与所述后腔流通，所述下腔体内的气流能通过所述第二泄漏孔和所述单体泄漏孔与所述后腔流通。通过所述磁路系统的结构设计使得所述上腔体和所述下腔体互不连通，从而使得所述上振膜和所述下振膜振动过程中互不影响。此外，还通过将所述上音圈和所述下音圈分别插入所述磁路系统的所述内磁间隙和所述外磁间隙内，使得所述上振膜和所述下振膜共用所述磁路系统，从而提高了磁路利用率。
 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为本发明扬声器箱一较佳实施例的立体图；
图2为图1所示扬声器箱沿A-A方向的剖示图；
图3为图1所示扬声器箱沿B-B方向的剖示图；
图4为图2所示扬声器箱中发声器件的结构示意图；
图5为图3所示扬声器箱中发声器件的结构示意图；
图6为图5所示发声器件的立体分解图；
图7为图6所示发声器件中部分结构组装后的结构示意图；
图8为图6所示发声器件中磁路系统组装后的结构示意图；
图9为图8所示磁路系统另一角度的结构示意图。
 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9，扬声器箱包括具有容纳腔100A的箱体100及设于所述箱体100内的发声器件200。
所述箱体100内设有将所述容纳腔100A分隔为前腔100B和后腔100C的隔板101，所述隔板101上贯穿设有与所述后腔100C连通的单体泄漏孔102，所述箱体100上贯穿设有与所述前腔100B连通的出声孔103，所述发声器件200悬置于所述前腔100B内。
所述发声器件200包括与所述隔板101抵接的盆架1以及固持于所述盆架1的振动系统3和驱动所述振动系统3振动发声的磁路系统5。
所述盆架1呈矩形结构。所述盆架1上贯穿设有与所述单体泄漏孔102连通的第一泄漏孔1A和第二泄漏孔1B。具体地，所述第一泄漏孔1A和所述第二泄漏孔1B位于所述盆架1与所述隔板101抵接的侧壁上以使得所述第一泄漏孔1A和所述第二泄漏孔1B与所述单体泄漏孔102连通。
如图2所示，所述单体泄漏孔102包括与所述第一泄漏孔1A连通的第一单体泄漏孔102A以及与所述第二泄漏孔1B连通的第二单体泄漏孔102B，所述第一单体泄漏孔102A与所述第二单体泄漏孔102B间隔设置。当然，在其他实施例中，所述第一单体泄漏孔102A与所述第二单体泄漏孔102B也可以打通形成一个泄漏孔。
所述振动系统3包括上振膜31、下振膜33、上音圈34、下音圈35及骨架36，所述上振膜31和所述下振膜33分别固定于所述盆架1的相对两侧，且所述上振膜31和所述下振膜33的振动方向相反，所述上振膜31、所述下振膜33及所述盆架1围合形成收容空间200A，所述磁路系统5收容于所述收容空间200A内，且所述磁路系统5将所述收容空间200A分隔为与所述第一泄漏孔1A连通的上腔体200B及与所述第二泄漏孔1B连通的下腔体200C，所述上音圈34驱动所述上振膜31振动发声，所述下音圈35驱动所述下振膜33振动发声，所述骨架36连接所述下音圈35和所述下振膜33。
需要说明的是，所述上振膜31和所述下振膜33的振动方向相反是指瞬时振动方向相反。具体地，所述上振膜31向远离所述磁路系统5方向振动时，所述下振膜33也向远离所述磁路系统5方向振动；所述上振膜31向靠近所述磁路系统5方向振动时，所述下振膜33也向靠近所述磁路系统5方向振动。
所述骨架36包括与所述下振膜33连接的第一连接部361、与所述下音圈35连接的第二连接部362及连接所述第一连接部361和所述第二连接部362的第三连接部363。
在本实施例中，所述第一连接部361和所述第二连接部362均呈环状结构。可以理解是，所述第一连接部361和所述第二连接部362实施方式，并不局限于此；例如，在其他实施例中，所述第一连接部361可以设置成呈平板状；所述第二连接部362可以设置成由多个分体结构构成，且各个分体结构分别与所述下音圈35连接。
在本实施例中，所述骨架36为一体成型结构。可以理解的是，在其他实施例中，所述第一连接部361、所述第二连接部362及所述第三连接部363可以通过焊接成型。
为了加强所述上振膜31和所述下振膜35振动效果以提高发声器件200的声学性能。在本实施例中，所述振动系统3还包括设于所述收容空间200A内的上球顶37和下球顶38，所述上球顶37沿振动方向X上的相对两侧分别与所述上振膜31和所述上音圈34连接，所述下球顶38沿振动方向X上的相对两侧分别与所述第一连接部361和所述下振膜33连接。可以理解的是，在其他实施例中，所述上球顶37和所述下球顶38还可以设于所述收容空间200A外，且所述上振膜31沿振动方向X上的相对两侧分别与所述上音圈34和所述上球顶37连接，所述下振膜33沿振动方向X上的相对两侧分别与所述下球顶38和所述第一连接部361连接。
如图4、图5及图6所示，所述发声器件200还包括上端盖7和下端盖9，所述上振膜31夹设于所述盆架1和所述上端盖7之间，所述上端盖7具有用于所述上振膜31向外发声的第一发声孔71，所述下振膜33夹设于所述盆架1和所述下端盖9之间，所述下端盖9具有用于所述下振膜33向外发声的第二发声孔91。所述上端盖7和所述下端盖9的设置，可以使得所述上振膜31和所述下振膜33更好的固定在所述盆架1上。
在本实施例中，所述箱体100包括与所述上端盖7相对且间隔设置的上底面104及与所述下端盖9相对且间隔设置的下底面105，所述上底面104上设有支撑所述上端盖7的多个第一垫块106，所述下底面105上设有支撑所述下端盖9的多个第二垫块107。通过多个所述第一垫块106和多个所述第二垫块107的支撑作用使得所述发声器件200悬置于所述前腔100B内。如图3所示，所述第一垫块106和所述第二垫块107与所述箱体100一体成型，可以理解的是，在其他实施例中，所述第一垫块106也可以是固定在所述上底面104上的垫块，所述第二垫块107也可以是固定在所述下底面105上的垫块。
所述磁路系统5包括第一磁部51、环绕所述第一磁部51设置且与所述第一磁部51之间形成内磁间隙5A的第二磁部52、环绕所述第二磁部52设置且与所述第二磁部52之间形成外磁间隙5B的第三磁部53、固设于所述第一磁部51朝向所述上振膜31一侧上的第一极芯54、固设于所述第二磁部52和所述第三磁部53朝向所述上振膜31一侧上的第二极芯55及固定于所述第一磁部51和所述第二磁部52朝向所述下振膜33一侧上的第三极芯56，所述第二磁部52呈连续的环状结构，所述第二极芯55固定于所述盆架1，所述上音圈34插入所述内磁间隙5A内，所述下音圈35插入所述外磁间隙5B内，其中，所述第二极芯55、所述第三极芯56及所述第二磁部52将所述收容空间200A分隔为与所述第一泄漏孔1A连通的上腔体200B及与所述第二泄漏孔1B连通的下腔体200C。所述上音圈34通电后，在所述磁路系统5的磁力作用下，所述上振膜31随所述上音圈34一同振动；所述下音圈35通电后，在所述磁路系统5的磁力作用下，所述下振膜33和所述骨架36随所述下音圈35一同振动。由于所述上振膜31和所述下振膜33设置成振动方向相反并分别由所述上音圈34和所述下音圈35驱动发声，且所述发声器件200被设置成悬置于所述前腔100B内，使得所述上振膜31和所述下振膜33振动发出的声音通过所述出声孔103传至所述扬声器箱外，从而使得扬声器箱的有效振动面积大幅提高以提高扬声器箱的灵敏度；同时，所述上振膜31和所述下振膜33振动时，所述上腔体200B内的气流能通过所述第一泄漏孔1A和所述单体泄漏孔102与所述后腔100C流通，所述下腔体200C内的气流能通过所述第二泄漏孔1B和所述单体泄漏孔102与所述后腔100C流通。又由于所述磁路系统5使得所述上腔体200B和所述下腔体200C被所述第二极芯55、所述第三极芯56及所述第二磁部52分隔，从而使得所述上振膜31和所述下振膜33振动过程中互不影响。此外，由于所述上音圈34和所述下音圈35分别插入所述磁路系统5的所述内磁间隙5A和所述外磁间隙5B内，使得所述上振膜31和所述下振膜33共用同一个磁路系统，提高了磁路利用率。
在本实施例中，所述磁路系统5还包括固定于所述第三磁部53朝向所述下振膜33一侧上的第四极芯57，所述第四极芯57固定于所述盆架1。通过所述第一极芯54、所述第二极芯55、第三极芯56、第四极芯57的导磁作用，可以有效增加所述内磁间隙5A和所述外磁间隙5B内的磁通量，从而可以提高发声器件200的声学性能，同时也有利于发声器件200的轻薄化设计。同时，由于所述第二极芯55和所述第四极芯57均固定于所述盆架1，可以使得所述磁路系统5更好的固持于所述盆架1上。
在本实施例中，所述第一极芯54和所述第二极芯55位于同一水平面上，所述第三极芯56和所述第四极芯57也位于同一水平面上。
在本实施例中，所述第二泄漏孔1B位于所述盆架1与所述磁路系统5对应的位置上，所述第三磁部53具有连通所述外磁间隙5B和所述第二泄漏孔1B的泄漏通道53A。也就是说，所述第二泄漏孔1B通过所述外磁间隙5B和所述泄漏通道53A与所述下腔体200C连通（即所述第二泄漏孔1B间接与所述下腔体200C连通）。可以理解的是，在其他实施例中，所述第二泄漏孔1B位于所述盆架1与所述下腔体200C对应的位置上（即所述第二泄漏孔1B直接与所述下腔体200C连通），相应地，所述第三磁部可以不具有泄漏通道。
在本实施例中，所述第三磁部53由环绕所述第二磁部52设置的多个第三永磁体构成，且相邻两所述第三永磁体之间间隔设置。其中，与所述第二泄漏孔1B相邻的两个所述第三永磁体间隔设置形成所述泄漏通道53A。可以理解的是，在其他实施例中，所述第三磁部53也可以为呈环状结构的第三永磁体，相应地，所述第三永磁体与所述第二泄漏孔对应的位置上需开设连通所述外磁间隙和所述第二泄漏孔的泄漏通道。
在本实施例中，所述第一磁部51为第一永磁体。可以理解的是，在其他实施例中，所述第一磁部51也可以由两个、三个等第一永磁体沿振动方向X叠加形成，且相邻两个第一永磁体之间还可以夹设极芯。
在本实施例中，所述第二磁部52为第二永磁体。可以理解的是，在其他实施例中，所述第二磁部52可以由两个、三个等呈连续的环状结构的第二永磁体沿振动方向X叠加形成，且相邻两个第二永磁体之间还可以夹设极芯。
上述中的所述第一永磁体、所述第二永磁体及所述第三永磁体通常采用磁钢。可以理解的是，所述第一永磁体、所述第二永磁体及所述第三永磁体也可以选择天然磁石。
与相关技术相比，本发明的扬声器箱通过将所述上振膜31和所述下振膜33设置成振动方向相反并分别由所述上音圈34和所述下音圈35驱动，且将所述发声器件200设置成悬置于所述前腔100B内，使得所述上振膜31和所述下振膜33振动发出的声音通过所述出声孔103传至所述扬声器箱外，从而使得扬声器箱的有效振动面积大幅提高以提高扬声器箱的灵敏度；同时，所述上振膜31和所述下振膜33振动时，所述上腔体200B内的气流能通过所述第一泄漏孔1A和所述单体泄漏孔102与所述后腔100C流通，所述下腔体200C内的气流能通过所述第二泄漏孔1B和所述单体泄漏孔102与所述后腔100C流通。通过所述磁路系统5的结构设计使得所述上腔体200B和所述下腔体200C互不连通，从而使得所述上振膜31和所述下振膜33振动过程中互不影响。此外，还通过将所述上音圈34和所述下音圈35分别插入所述磁路系统5的所述内磁间隙5A和所述外磁间隙5B内，使得所述上振膜31和所述下振膜33共用所述磁路系统5，从而提高了磁路利用率。
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 (10)

  1. 一种扬声器箱，包括具有容纳腔的箱体及发声器件，其特征在于，所述箱体内设有将所述容纳腔分隔为前腔和后腔的隔板，所述箱体上贯穿设有与所述前腔连通的出声孔，所述隔板上贯穿设有与所述后腔连通的单体泄漏孔，所述发声器件悬置于所述前腔内，所述发声器件包括与所述隔板抵接的盆架以及固持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，所述盆架上贯穿设有与所述单体泄漏孔连通的第一泄漏孔和第二泄漏孔，所述振动系统包括分别固定于所述盆架的相对两侧且振动方向相反的上振膜和下振膜、驱动所述上振膜振动发声的上音圈及驱动所述下振膜振动发声的下音圈，所述上振膜、所述下振膜及所述盆架围合形成收容所述磁路系统的收容空间，所述磁路系统包括第一磁部、环绕所述第一磁部设置且与所述第一磁部之间形成内磁间隙的第二磁部、环绕所述第二磁部设置且与所述第二磁部之间形成外磁间隙的第三磁部、固设于所述第一磁部朝向所述上振膜一侧上的第一极芯、固设于所述第二磁部和所述第三磁部朝向所述上振膜一侧上的第二极芯及固定于所述第一磁部和所述第二磁部朝向所述下振膜一侧上的第三极芯，所述第二磁部呈连续的环状结构，所述第二极芯固定于所述盆架，所述上音圈插入所述内磁间隙内，所述下音圈插入所述外磁间隙内，其中，所述第二极芯、所述第三极芯及所述第二磁部将所述收容空间分隔为与所述第一泄漏孔连通的上腔体及与所述第二泄漏孔连通的下腔体。
  2. 根据权利要求1所述的扬声器箱，其特征在于，所述第二泄漏孔位于所述盆架与所述磁路系统对应的位置上，所述第三磁部具有连通所述外磁间隙和所述第二泄漏孔的泄漏通道。
  3. 根据权利要求2所述的扬声器箱，其特征在于，所述第三磁部由环绕所述第二磁部设置的多个第三永磁体构成，且相邻两所述第三永磁体间隔设置，其中，与所述第二泄漏孔相邻的两个所述第三永磁体间隔设置形成所述泄漏通道。
  4. 根据权利要求1所述的扬声器箱，其特征在于，所述下音圈和所述下振膜通过骨架连接，所述骨架包括与所述下振膜连接的第一连接部、与所述下音圈连接的第二连接部及连接所述第一连接部和所述第二连接部的第三连接部。
  5. 根据权利要求4所述的扬声器箱，其特征在于，所述第一连接部和所述第二连接部均呈环状结构。
  6. 根据权利要求4或5所述的扬声器箱，其特征在于，所述骨架为一体成型结构。
  7. 根据权利要求4所述的扬声器箱，其特征在于，所述振动系统还包括设于所述收容空间内的上球顶和下球顶，所述上球顶沿振动方向上的相对两侧分别与所述上振膜和所述上音圈连接，所述下球顶沿振动方向上的相对两侧分别与所述第一连接部和所述下振膜连接。
  8. 根据权利要求1所述的扬声器箱，其特征在于，所述磁路系统还包括固定于所述第三磁部朝向所述下振膜一侧上的第四极芯，所述第四极芯固定于所述盆架。
  9. 根据权利要求1所述的扬声器箱，其特征在于，所述发声器件还包括上端盖和下端盖，所述上振膜夹设于所述盆架和所述上端盖之间，所述上端盖具有用于所述上振膜向外发声的第一发声孔，所述下振膜夹设于所述盆架和所述下端盖之间，所述下端盖具有用于所述下振膜向外发声的第二发声孔。
  10. 根据权利要求9所述的扬声器箱，其特征在于，所述箱体包括与所述上端盖相对且间隔设置的上底面及与所述下端盖相对且间隔设置的下底面，所述上底面上设有支撑所述上端盖的多个第一垫块，所述下底面上设有支撑所述下端盖的多个第二垫块。
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