WO2021000459A1 - 多路输入驱动的扬声器 - Google Patents

多路输入驱动的扬声器 Download PDF

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Publication number
WO2021000459A1
WO2021000459A1 PCT/CN2019/112649 CN2019112649W WO2021000459A1 WO 2021000459 A1 WO2021000459 A1 WO 2021000459A1 CN 2019112649 W CN2019112649 W CN 2019112649W WO 2021000459 A1 WO2021000459 A1 WO 2021000459A1
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WO
WIPO (PCT)
Prior art keywords
voice coil
cone
magnetic circuit
positioning support
holes
Prior art date
Application number
PCT/CN2019/112649
Other languages
English (en)
French (fr)
Inventor
周建明
Original Assignee
苏州茹声电子有限公司
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 苏州茹声电子有限公司 filed Critical 苏州茹声电子有限公司
Priority to EP19935876.3A priority Critical patent/EP3996388A4/en
Priority to US17/622,910 priority patent/US11877136B2/en
Priority to JP2021577944A priority patent/JP7263564B2/ja
Publication of WO2021000459A1 publication Critical patent/WO2021000459A1/zh
Priority to JP2023064799A priority patent/JP2023089128A/ja

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider
    • 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
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
    • 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
    • H04R9/046—Construction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H04R9/063—Loudspeakers using a plurality of acoustic drivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/401—2D or 3D arrays of transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/024—Manufacturing aspects of the magnetic circuit of loudspeaker or microphone transducers
    • 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
    • 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

Definitions

  • the invention belongs to the field of loudspeakers, and relates to a loudspeaker driven by multiple channels.
  • Existing speakers generally use a cone-shaped cone (made of paper, PP and other materials) combined with a positioning support piece structure.
  • a central hole is provided between the cone-shaped cone and the positioning support.
  • the positioning support is arranged below the cone-shaped cone. , Pass the single-channel signal input voice coil in the center hole of the positioning support piece and the cone-shaped cone, and glue the cone-shaped cone and the positioning support piece on the voice coil respectively to form a speaker vibration system.
  • This type of speaker can only be used Single-channel signal input has limitations on the original sound reproduction.
  • one of the current improvements is to adopt a cone-shaped cone combined positioning support piece structure.
  • a central hole is provided between the cone-shaped cone and the positioning support piece.
  • the positioning support piece is arranged under the cone-shaped cone, and the voice coil
  • the voice coil is changed from single-channel signal input to multiple-channel signal input and passes through the positioning piece and the center hole of the cone-shaped cone.
  • the voice coil is formed by stacking multiple sets of coils from the inside to the outside.
  • the supporting pieces are respectively glued on the voice coil to form a loudspeaker vibration system, which can be used for multi-channel signal input.
  • this type of speaker has multiple sets of coils wound on a voice coil, winding multiple sets of coils into a voice coil increases the weight of the voice coil. When the voice coil drives the cone, the sensitivity of the speaker will be lost.
  • the present invention provides a multi-input-driven speaker, which increases the sensitivity of the speaker and improves the clarity of the speaker while reducing speaker distortion.
  • a speaker driven by multiple inputs comprising a basin frame and a voice cone arranged on the basin frame, each of the input driving mechanisms includes a voice coil and a magnetic circuit component for driving the voice coil to vibrate;
  • a plurality of magnetic circuit mounting holes are provided on the basin frame, and at most one magnetic circuit assembly is provided at each of the magnetic circuit mounting holes;
  • a plurality of voice coil mounting holes are provided on the voice cone, and at most one voice coil is provided at each voice coil mounting hole;
  • the loudspeaker further includes a positioning support piece, the positioning support piece is provided with a plurality of voice coil holes, and each of the voice coils is respectively inserted into the corresponding voice coil hole and closely matched with the positioning support piece.
  • multi-input refers to multiple audio signal inputs
  • multi-input drive refers to multiple audio signals input to multiple voice coils, and the multiple voice coils jointly drive the speaker to produce sound.
  • the speaker further includes three or more input driving mechanisms, and the three or more input driving mechanisms are arranged at equal intervals along a circle.
  • the cone has a flat-shaped cone bottom that is circular as a whole, the center of the circumference coincides with the center of the bottom of the cone, and three or three cones are provided on the bottom of the cone.
  • the center line of the voice coil mounting hole passes through the circumference, and each voice coil mounting hole is provided with one voice coil so that the voice coil and the The bottom of the sound cone is connected; the positioning support piece is provided with three or more voice coil holes, and the three or more voice coil holes are arranged at equal intervals along the circumference.
  • the bottom of the sound cone adopts a flat shape, which reduces the overall height of the sound cone, which is beneficial to reduce the total height of the speaker and expand the directivity.
  • the basin frame is provided with three or more magnetic circuit mounting holes, the magnetic circuit mounting holes are arranged at equal intervals along the circumference, and each of the magnetic circuit mounting holes One said magnetic circuit assembly is provided.
  • the sound cone further has a tapered edge portion extending obliquely upward from the outer edge of the bottom of the sound cone, and the tapered edge portion is fixedly connected to the basin frame by a yoke ring.
  • the basin frame has a flange surrounding the plurality of magnetic circuit mounting holes, and the positioning support piece cooperates with the flange so that the positioning support piece is clamped on the flange Between the inner walls.
  • the flange has a closed circular ring shape.
  • the positioning support piece has a flat main body part, and the voice coil hole is opened on the main body part.
  • the main body part includes a fabric layer and a plastic sheet layer laminated on each other.
  • a vent hole is formed on the basin frame, and the vent hole is formed between the plurality of magnetic circuit mounting holes. Conducive to the discharge of the gas generated when the voice coil vibrates up and down and the heat generated during work.
  • each of the input driving mechanisms further includes a dust cover, and each of the voice coil mounting holes is covered with one dust cover.
  • the magnetic circuit assembly includes a U iron with an inner cavity, a magnetic steel and a magnetic pole core disposed in the U iron, and the magnetic steel and the magnetic pole core are formed between the inner wall of the U iron There is a magnetic gap, the voice coil is movably inserted into the magnetic gap, and the upper edge of the U iron is fixedly connected to the magnetic circuit mounting hole of the basin frame.
  • the magnetic steel is neodymium magnetic steel or ferrite magnetic steel.
  • multiple pairs of audio signal input terminals are provided on the basin frame, and each pair of the audio signal input terminals is electrically connected to a lead of the voice coil.
  • a plurality of reinforcing ribs are provided on the sound cone. It can increase the intensity of the cone when working.
  • the plurality of input driving mechanisms are arranged in a circular arrangement, a linear arrangement, or an array arrangement.
  • the loudspeaker includes three or more than three input drive mechanisms, and the three or more input drive mechanisms are arranged at equal intervals along a circle, and the sound cone has an overall circular shape.
  • the bottom of the cone is shaped like a flat plate, the center of the circumference coincides with the center of the bottom of the cone, and the bottom of the cone is provided with three or more voice coil mounting holes, and the voice coil is installed
  • the center line of the hole passes through the circumference, and each of the voice coil mounting holes is provided with a voice coil to connect the voice coil to the bottom of the sound cone;
  • the speaker further includes a positioning support piece Three or more voice coil holes are provided on the positioning support piece, and the three or more voice coil holes are arranged at equal intervals along the circumference, and each voice coil is respectively inserted in the corresponding The voice coil hole is tightly matched with the positioning support piece.
  • the multi-input-driven speaker of the present invention has an ingenious and reasonable structure.
  • the audio signal input is received through multiple voice coils, and the original sound reproduction and distortion are better than traditional speakers; it adopts an input composed of multiple voice coils and multiple magnetic circuit components.
  • the driving structure increases the sensitivity of the speaker and improves the clarity of the speaker.
  • Fig. 1 is an exploded schematic diagram of a speaker according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the basin frame in Figure 1 after the magnetic circuit assembly is installed;
  • FIG 3 is a schematic diagram of the basin frame in Figure 1 after the voice coil and positioning support are installed;
  • Fig. 4 is a schematic diagram of the speaker in Fig. 1 after being assembled.
  • Basin frame 10. Magnetic circuit installation hole; 11. Flange; 12. Vent hole; 2. Sound cone; 20. Voice coil installation hole; 21. Sound cone bottom; 22. Conical edge; 23. Reinforcement Rib; 3. Input drive mechanism; 31, dust cover; 32, voice coil; 320, lead wire; 33, auxiliary neodymium magnet; 34, magnetic pole core; 35, main neodymium magnet; 36, U iron; 4. positioning Support piece; 40. Voice coil hole; 5. Yoke ring; 6. Audio signal input terminal.
  • the multi-input-driven speaker includes: a basin frame 1, a sound cone 2, a plurality of input driving mechanisms 3 and a positioning support 4.
  • the sound cone 2 is used for vibrating and sounding, and is fixedly arranged on the basin frame 1.
  • Each input drive mechanism 3 respectively includes a voice coil 32 and a magnetic circuit assembly for driving the voice coil 32 to vibrate; wherein a plurality of magnetic circuit mounting holes 10 are provided on the basin frame 1, and each magnetic circuit mounting hole 10 is provided with at most A magnetic circuit component; the sound cone 2 is provided with multiple voice coil mounting holes 20, and each voice coil mounting hole 20 is provided with at most one voice coil 32; the positioning support piece 4 is circular as a whole, and the positioning support piece 4 is provided There are a plurality of voice coil holes 40, and each voice coil hole 40 has at most one voice coil 32 through it. That is, a plurality of drive input mechanisms are installed on the basin frame 1 and the cone 2. The number of input driving mechanisms 3 is three or more to increase the driving energy of the speaker.
  • Three or more input driving mechanisms 3 are arranged at equal intervals along a circle.
  • the cone 2 has an overall circular flat cone bottom 21, and the center of the circle coincides with the center of the cone bottom 21, that is, a plurality of input driving mechanisms 3 are equally spaced along the circumferential direction of the cone bottom 21 Arrangement.
  • three or more voice coil mounting holes 20 are opened on the bottom 21 of the sound cone. The center line of the voice coil mounting hole 20 passes through the aforementioned circumference.
  • Each voice coil mounting hole 20 is provided with a voice coil 32.
  • the frame 1 is provided with three or more magnetic circuit mounting holes 10, the magnetic circuit mounting holes 10 are arranged at equal intervals along the circumference, and each magnetic circuit mounting hole 10 is respectively A magnetic circuit assembly is provided; three or more voice coil holes 40 are also correspondingly opened on the positioning support 4, the voice coil holes 40 are arranged at equal intervals along the circumference, and the center line of each voice coil hole 40 passes through the aforementioned circumference, Each voice coil hole 40 is provided with a voice coil 32, and the aperture of the voice coil hole 40 matches the outer diameter of the voice coil 32, so that the voice coil 32 is tightly arranged in the positioning support 4.
  • the number of the input drive mechanism 3, the voice coil mounting holes 20 and the magnetic circuit mounting holes 10 are all three, and they are arranged in a circular and balanced arrangement around the center of the bottom 21 of the cone.
  • the sound cone whose bottom is circular as a whole, and a plurality of input driving mechanisms are arranged in a ring around the circle of the bottom of the sound cone.
  • the sound cone has an oval or rectangular sound cone bottom, and a plurality of the input driving mechanisms are arranged linearly or in an array.
  • the basin frame 1 is made of plastic using injection molding and other processes, which are easy to form and have a certain strength.
  • the magnetic circuit mounting hole 10 is a through hole that penetrates the basin frame 1 from top to bottom.
  • the sound cone 2 also has a tapered edge portion 22 extending obliquely upward from the outer edge of the sound cone bottom 21, and the tapered edge portion 22 is arranged in a circle around the sound cone bottom 21.
  • the sound cone 2 is made of paper pulp, plastic (for example, PP (polypropylene)), bulletproof fiber or aluminum alloy.
  • the made cone 2 is light in weight, has good damping elasticity and rigidity, high temperature and low temperature resistance, waterproof and mildew proof .
  • the tapered edge portion 22 of the cone 2 is fixedly connected to the frame 1 by a ring of yoke ring 5, which is made of sponge, rubber or cloth.
  • the cone 2 with the above-mentioned shape is superior to the traditional conical loudspeaker in terms of directivity expansion, and the height is lower than that of the traditional conical cone 2, which is beneficial to reduce the overall height of the loudspeaker.
  • the positioning support piece 4 is located in the cavity formed between the basin frame 1 and the sound cone 2 after they are connected, and is clamped on the basin frame 1. With the limitation of the positioning support piece 4, the voice coil 32 can only move up and down. Movement, unable to produce displacement in the horizontal direction.
  • the basin frame 1 has an upwardly extending flange 11 surrounding the three magnetic circuit mounting holes 10.
  • the flange 11 is specifically a closed ring-shaped protrusion, and the positioning support piece 4 is clamped in the flange 11 , And the outer edge of the positioning support piece 4 is in close contact with the inner wall of the flange, so that the positioning support piece 4 can be clamped between the inner walls of the flange 11 (as shown in FIG.
  • the main part of the positioning piece 4 is flat, the edge part of the positioning piece 4 has annular depressions and protrusions, the voice coil hole 40 is opened on the main part of the positioning piece 4, the main part of the positioning piece 4 includes mutual The laminated fabric layer and the plastic sheet layer are laminated on the fabric layer to increase the strength of the positioning support sheet 4.
  • a vent 12 is provided in the middle of the basin frame 1.
  • the vent 12 is specifically opened between the three magnetic circuit mounting holes 10, and the vent 12 penetrates the middle of the basin frame 1 from top to bottom, thereby facilitating the up and down vibration of the voice coil 32 The discharge of the generated gas and the dissipation of the heat generated during work.
  • Each input drive mechanism 3 also includes a dust cover 31, respectively.
  • the specific structure of the input driving mechanism 3 is described in detail below.
  • each input driving mechanism 3 is composed of a dust cover 31, a voice coil 32, an auxiliary neodymium magnet 33, a magnetic pole core 34, a main neodymium magnet 35 and a U iron 36 respectively.
  • a dust cover 31 is fixedly connected to the sound cone 2
  • each voice coil mounting hole 20 is covered with a dust cover 31, and the voice coil 32 is covered under the dust cover 31.
  • the upper end of the voice coil 32 is inserted into the voice coil mounting hole 20 of the sound cone 2 and fits tightly.
  • the voice coil 32 is connected to the sound cone 2 so as to drive the sound cone 2 to vibrate.
  • the U iron 36 has an inner cavity and an open upper end.
  • the upper edge of the U iron 36 is fixedly connected to the magnetic circuit mounting hole 10 (such as the wall of the magnetic circuit mounting hole 10, or the bottom of the basin 1 adjacent to the magnetic circuit mounting hole 10) Surface), the magnetic circuit mounting hole 10 is connected to the inner cavity of the U iron 36; the secondary neodymium magnet 33, the magnetic pole core 34, and the main neodymium magnet 35 are stacked from top to bottom, and fixedly arranged in the inner cavity of the U iron 36, Forming a magnetic circuit assembly; the lower surface of the secondary neodymium magnet 33 is closely attached to the upper surface of the magnetic pole core 34, and the lower surface of the magnetic pole core 34 is closely attached to the upper surface of the main neodymium magnet 35; the secondary neodymium magnet 33, the magnetic pole There is a gap between the core 34 and the main neodymium magnet 35 and the inner wall of the U iron 36, thereby forming a magnetic gap surrounding the
  • the lower end of the voice coil 32 Insert down into the magnetic gap from the magnetic circuit mounting hole 10, there is a gap between the voice coil 32 neodymium magnet 33, the magnetic pole core 34 and the main neodymium magnet 35, and there is also a gap between the inner wall of the U iron 36 Gap, which can move up and down in the magnetic gap.
  • the magnetic circuit assembly in this embodiment adopts the aforementioned secondary neodymium magnet steel and the main neodymium magnet steel, which has the advantages of small volume and light weight.
  • the aforementioned secondary neodymium magnets and main neodymium magnets in the magnetic circuit assembly can be replaced with ferrite magnets respectively, thereby reducing the cost of the magnetic circuit assembly.
  • each pair of audio signal input terminals 6 is electrically connected to a lead of a voice coil 32 respectively.
  • Each pair of audio signal input terminals 6 includes a positive terminal and a negative terminal.
  • One lead of each voice coil 32 is electrically connected to the positive terminal of the pair of audio signal input terminals 6, and the other lead is electrically connected to the pair.
  • the negative terminal of the audio signal input terminal 6 receives the audio signal (analog signal or digital signal) input by the pair of audio signal input terminals 6.
  • each voice coil 32 is simultaneously driven through the three pairs of audio signal input terminals 6.
  • the positive and negative leads of each voice coil 32 can be connected to the middle terminals at the bottom of the basin frame 1. This connection method simplifies the manufacture of multi-input driver speakers. , It is also convenient for the connection of audio signal input.
  • a plurality of reinforcing ribs 23 are provided on the sound cone 2, which can increase the working strength of the sound cone 2.
  • a plurality of reinforcing ribs 23 are arranged at equal intervals along the circumferential direction of the cone 2, and each reinforcing rib 23 extends along the radial direction of the cone 2.
  • the rib 23 is located between the voice coil mounting holes 20.
  • the reinforcing ribs 23 extend from the cone bottom 21 to the tapered edge portion 22, thereby enhancing the strength between the flat cone bottom 21 and the tapered edge portion 22.
  • the working principle of the multi-input-driven speaker is: the audio signal is input to the multiple voice coils 32 through the audio signal input terminal 5 on the basin frame 1, and the multiple voice coils 32 move up and down synchronously under the action of the magnetic circuit assembly, thereby driving The cone 2 vibrates and produces sound.
  • the multi-input-driven speaker of the present invention adopts a sound cone 2 with a flat bottom.
  • Three or more voice coil mounting holes 20 are provided on the plane formed by the bottom 21 of the sound cone, and are connected with three or three More than one voice coil 32 is tightly combined, and then the voice coil 32 is tightly combined with the positioning support 4 to form three or more input drive mechanisms 3, and three or more magnetic circuit components are used to drive the voice coil 32.
  • the sound cone 2 is pushed by three or more voice coils 32, so that not only the height of the product can be reduced, but also the directivity of the product can be broadened.
  • the product distortion is reduced, the sensitivity of the speaker is increased, and the clarity of the speaker is improved.
  • the use of integrated terminals simplifies the connection of the product itself and facilitates the connection of audio signal input.
  • the speaker structure is ingenious and reasonable. Through the use of a flat bottom tapered cone structure, the flat bottom tapered cone has a better directivity than traditional speakers; three or more voice coils are used to receive audio signal input, and the original sound is reproduced and distorted.
  • the height of the cone is lower than that of the traditional cone cone, and the height of the cone can also be reduced to reduce the height of the product; by using three or more voice coils and three or
  • the input drive structure composed of the above magnetic circuit components increases the sensitivity of the speaker; through the flat bottom with a tapered cone and three or more voice coils are closely connected, three or more voice coils pass through three or more audio channels in the U ferromagnetic circuit
  • the signal input drives the voice coil to move up and down to drive the cone to sound.

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

Abstract

本发明公开了一种多路输入驱动的扬声器，其在降低扬声器失真的同时，增加了扬声器的灵敏度并提高了扬声器清晰度。一种多路输入驱动的扬声器，包括盆架及设置于所述盆架上的音盆，各所述输入驱动机构分别包括音圈及用于驱动所述音圈振动的磁路组件；所述盆架上设有多个磁路安装孔，每个所述磁路安装孔处至多设置有一个所述磁路组件；所述音盆上设有多个音圈安装孔，每个所述音圈安装孔处至多设置有一个所述音圈；所述扬声器还包括一个定位支片，所述定位支片上开设有多个音圈孔，各所述音圈分别穿设在对应的所述音圈孔内并和所述定位支片紧密配合。

Description

多路输入驱动的扬声器
相关申请的交叉引用
本申请要求2019年7月2日提交的申请号为CN 201921012649.X的中国专利申请的优先权，其全部内容通过引用的方式并入本申请中。
技术领域
本发明属于扬声器领域，涉及一种多路输入驱动的扬声器。
背景技术
现有扬声器一般采用锥型音盆(由纸、PP等材料制成)组合定位支片结构，锥型音盆与定位支片中间设有中心孔，定位支片配置在锥型音盆的下方，将单路信号输入音圈穿在定位支片与锥型音盆中心孔中，将锥型音盆、定位支片分别胶合在音圈上，形成扬声器振动***，这种扬声器只能应用于单路信号输入，对声音原声重放具有局限性。
因此，目前的一种改进方式是：采用锥型音盆组合定位支片结构，锥型音盆与定位支片中间设有中心孔，定位支片配置在锥型音盆的下方，将音圈由单路信号输入方式变更为多路信号输入音圈并穿在定位支片与锥型音盆中心孔中，其中音圈由多组线圈自内至外层叠形成，将锥型音盆、定位支片分别胶合在音圈上，形成扬声器振动***，这种扬声器可应用于多路信号输入。然而，由于这种扬声器在一个音圈上绕有多组线圈，多组线圈绕线成一个音圈上增加了音圈的重量，当这个音圈驱动音盆时，扬声器灵敏度会受到损失。
发明内容
针对上述问题，本发明提供一种多路输入驱动的扬声器，其在降低扬声器失真的同时，增加了扬声器的灵敏度并提高了扬声器清晰度。
为达到上述目的，本发明采用的技术方案为：
一种多路输入驱动的扬声器，包括盆架及设置于所述盆架上的音盆，各所述输入驱动机构分别包括音圈及用于驱动所述音圈振动的磁路组件；
所述盆架上设有多个磁路安装孔，每个所述磁路安装孔处至多设置有一个所述磁路组件；
所述音盆上设有多个音圈安装孔，每个所述音圈安装孔处至多设置有一个所述音圈；
所述扬声器还包括一个定位支片，所述定位支片上开设有多个音圈孔，各所述音圈分别穿设在对应的所述音圈孔内并和所述定位支片紧密配合。
本发明中，“多路输入”是指具有多个音频信号输入；“多路输入驱动”是指多个音频信号输入至多个音圈，由这多个音圈共同驱动扬声器发声。
在一实施例中，所述扬声器还包括三个或三个以上的输入驱动机构，三个或三个以上的所述输入驱动机构沿一圆周等间隔排列。
在一实施例中，所述音盆具有整体呈圆形的平板状的音盆底部，所述圆周的圆心与所述音盆底部的圆心重合，所述音盆底部上开设有三个或三个以上的所述音圈安装孔，所述音圈安装孔的中心线穿过所述圆周，每个所述音圈安装孔中分别设置有一个所述音圈以使所述音圈与所述音盆底部相连；所述定位支片上开设有三个或三个以上的所述音圈孔，三个或三个以上的所述音圈孔沿所述圆周等间隔排列。音盆底部采用平板形状，降低了音盆整体高度，有利于降低扬声器总高度，拓展指向性。
在一实施例中，所述盆架上开设有三个或三个以上的所述磁路安装孔，所述磁路安装孔沿所述圆周等间隔排列，每个所述磁路安装孔中分别设置有一个所述磁路组件。
在一实施例中，所述音盆还具有自所述音盆底部的外缘向上倾斜延伸的锥形边缘部，所述锥形边缘部通过轭环固定连接于所述盆架。
在一实施例中，所述盆架上具有环绕所述多个磁路安装孔的凸缘，所述定位支片与所述凸缘相互配合以使所述定位支片卡于所述凸缘的内壁之间。
优选地，所述凸缘为封闭的圆环形。
在一实施例中，所述定位支片具有平板状的主体部位，所述音圈孔开设在所述主体部位上。
优选地，所述主体部位包括相互层叠的织物层和塑料薄片层。
在一实施例中，所述盆架上开设有透气孔，所述透气孔开设有所述多个磁路安装孔之间。利于音圈在上下振动时产生的气体的排出和工作时产生的热量的散发。
在一实施例中，各所述输入驱动机构还分别包括防尘罩，每个所述音圈安装孔上覆盖设置有一个所述防尘罩。
在一实施例中，所述磁路组件包括具有内腔的U铁、设置于所述U铁内的磁钢及磁极芯，所述磁钢及磁极芯与所述U铁的内壁之间形成有磁隙，所述音圈可上下移动地插设于所述磁隙中，所述U铁的上缘固定连接于所述盆架的所述磁路安装孔处。
更优选地，磁钢为钕磁钢或铁氧体磁钢。
在一实施例中，所述盆架上设置有多对音频信号输入端子，每对所述音频信号输入端子分别与一个所述音圈的引线电性连接。
在一实施例中，所述音盆上设置有多个加强筋。能够增加音盆工作时的强度。
在一实施例中，所述多个输入驱动机构沿圆形排列或沿直线排列或为阵列式排列。
在一实施例中，所述扬声器包括三个或三个以上的所述输入驱动机构，三个或三个以上的所述输入驱动机构沿一圆周等间隔排列，所述音盆具有整体呈圆形的平板状的音盆底部，所述圆周的圆心与所述音盆底部的圆心重合，所述音盆底部上开设有三个或三个以上的所述音圈安装孔，所述音圈安装孔的中心线穿过所述圆周，每个所述音圈安装孔中分别设置有一个所述音圈以使所述音圈与所述音盆底部相连；所述扬声器还包括一个定位支片，所述定位支片上开设有三个或三个以上的音圈孔，三个或三个以上的所述音圈孔的沿所述圆周等间隔设置，各所述音圈分别穿设在对应的所述音圈孔内并和所述定位支片紧密配合。
本发明采用以上方案，相比现有技术具有如下优点：
本发明的多路输入驱动的扬声器，结构巧妙合理，通过多个音圈分别接收音频信号输入，原声重放与失真优于传统扬声器；通过采用多个音圈与多个磁路组件组成的输入驱动结构，增加扬声器灵敏度，提高了扬声器清晰度。
附图说明
为了更清楚地说明本发明的技术方案，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他的附图。
图1为根据本发明实施例的一种扬声器的分解示意图；
图2为图1中的盆架在安装磁路组件后的示意图；
图3为图1中的盆架在安装音圈及定位支片后的示意图；
图4为图1中的扬声器装配后的示意图。
其中：
1、盆架；10、磁路安装孔；11、凸缘；12、透气孔；2、音盆；20、音圈安装孔；21、音盆底部；22、锥形边缘部；23、加强筋；3、输入驱动机构；31、防尘罩；32、音圈；320、引线；33、副钕磁钢；34、磁极芯；35、主钕磁钢；36、U铁；4、定位支片；40、音圈孔；5、轭环；6、音频信号输入端子。
具体实施方式
下面结合附图对本发明的较佳实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域的技术人员理解。在此需要说明的是，对于这些实施方式的说明用于帮助理解本发明，但并不构成对本发明的限定。
本实施例提供一种多路输入驱动的扬声器，此处，多路输入是指具有多个音频信号输入，多个音频信号输入至多个音圈，由这多个音圈共同驱动扬声器发声。参照图1至图4所示，该多路输入驱动的扬声器包括：一个盆架1、一个音盆2、多个输入驱动机构3以及一个定位支片4。音盆2用于振动发声，其固定设置在盆架1上。各个输入驱动机构3分别包括音圈32及用于驱动音圈32振动的磁路组件；其中，盆架1上设有多个磁路安装孔10，每个磁路安装孔10处至多设置有一个磁路组件；音盆2上设有多个音圈安装孔20，每个音圈安装孔20处至多设置有一个音圈32；定位支片4整体呈圆形，定位支片4上开设多个音圈孔40，每个音圈孔40中至多穿设有一个音圈32。即，多个驱动输入机构安装在盆架1及音盆2上。输入驱动机构3的数量为三个或三个以上，以增加扬声器驱动能量，三个或三个以上的输入驱动机构3沿一圆周等间隔排列。音盆2具有整体呈圆形的平板状的音盆底部21，上述圆周的圆心与音盆底部21的圆心重合，也就是说，多个输入驱动机构3沿音盆底部21的圆周方向 等间隔排布。对应地，音盆底部21上开设有三个或三个以上的音圈安装孔20，音圈安装孔20的中心线穿过上述圆周，每个音圈安装孔20中分别设置有一个音圈32以使音圈32与音盆底部21相连；盆架1上开设有三个或三个以上的磁路安装孔10，磁路安装孔10沿圆周等间隔排列，每个磁路安装孔10中分别设置有一个磁路组件；定位支片4上也对应开设有三个或三个以上的音圈孔40，音圈孔40沿圆周等间隔排列，各音圈孔40的中心线穿过上述圆周，每个音圈孔40中穿设有一个音圈32，且音圈孔40的孔径和音圈32的外径匹配，使得音圈32紧密地设置在定位支片4中，。具体如图1-4所示，输入驱动机构3、音圈安装孔20及磁路安装孔10的数量均为三个，且绕音盆底部21的圆心呈环形均衡排列。
本实施例中优选采用音盆底部整体呈圆形的音盆，且多个输入驱动机构绕音盆底部的圆形呈环形排列。而在另外一些实施例中，所述音盆具有整体呈椭圆形或矩形的音盆底部，多个所述输入驱动机构线性排列或阵列式排列。
本实施例中，盆架1由塑料采用注塑成型等工艺制成，其易成型且有一定强度，磁路安装孔10为自上至下贯通盆架1的通孔。音盆2还具有自音盆底部21的外缘向上倾斜延伸的锥形边缘部22，锥形边缘部22围绕音盆底部21一圈设置。音盆2整体由纸浆、塑料(如，PP(聚丙烯))、防弹纤维或铝合金制作而成，制成的音盆2重量轻、阻尼弹性及刚性好、耐高温与低温、防水防霉。此外，音盆2的锥形边缘部22通过一圈轭环5固定连接到盆架1上，轭环5由海绵、橡胶或布制成。采用上述形状的音盆2，在指向性拓展宽度方面优于传统锥形扬声器，而且比传统的圆锥形音盆2高度降低，有利于降低扬声器总高度。
定位支片4位于由盆架1和音盆2连接后二者之间形成的空腔中，并卡设于盆架1上，通过定位支片4的限制，音圈32仅能作上下方向的运动，而不能够在水平方向上产生位移。具体地，盆架1上具有环绕三个磁路安装孔10的向上延伸的凸缘11，凸缘11具体为一圈封闭的圆环形凸起，定位支片4卡设于凸缘11内，且定位支片4的外沿和凸缘的内壁紧密接触，从而定位支片4可被卡在凸缘11的内壁之间(如图3所示)，防止定位支片4晃动。定位支片4的主体部位为平板状，定位支片4的边缘部位具有环形的凹陷和凸起，音圈孔40开设在定位支片4的主体部位上，定位支片4的主体部位包括相互层叠的织物层和塑料薄片层，塑料薄片层贴合在织物层上，以增加定位支片4的强度。
盆架1的中部开设有透气孔12，透气孔12具体开设在三个磁路安装孔10之间，透气孔 12自上至下贯通盆架1的中部，从而利于音圈32在上下振动时产生的气体的排出和工作时产生的热量的散发。
各输入驱动机构3还分别包括防尘罩31。下面对输入驱动机构3的具体结构做详细描述。如图1所示，每个输入驱动机构3分别由防尘罩31、音圈32、副钕磁钢33、磁极芯34、主钕磁钢35以及U铁36。各输入驱动机构3中，防尘罩31固定连接在音盆2上，每个音圈安装孔20上覆盖设置有一个防尘罩31，将音圈32罩设在防尘罩31下方。音圈32的上端插设在音盆2的音圈安装孔20中并紧密配合，音圈32和音盆2相连从而能够驱动音盆2振动。U铁36具有内腔且上端敞口设置，U铁36的上缘固定连接在磁路安装孔10处(如磁路安装孔10的孔壁，或邻近磁路安装孔10的盆架1下表面)，磁路安装孔10连通U铁36的内腔；副钕磁钢33、磁极芯34、主钕磁钢35自上至下层叠设置，并固定设置于U铁36的内腔中，形成磁路组件；副钕磁钢33的下表面与磁极芯34的上表面紧密贴合，磁极芯34的下表面与主钕磁钢35的上表面紧密贴合；副钕磁钢33、磁极芯34及主钕磁钢35三者与U铁36的内壁之间具有间隔，从而形成环绕副钕磁钢33、磁极芯34及主钕磁钢35三者的磁隙，音圈32的下端自磁路安装孔10中向下插设至磁隙中，音圈32副钕磁钢33、磁极芯34及主钕磁钢35三者之间存在间隙，与U铁36内壁之间也存在间隙，从而能够在磁隙中上下运动。
本实施例中的磁路组件采用上述副钕磁钢和主钕磁钢，其具有体积小、重量轻的优点。在另外的一些实施例中，磁路组件中的上述副钕磁钢和主钕磁钢可分别被替换为铁氧体磁钢，进而减小磁路组件的成本。
如图2和图3所示，盆架1的边缘部位有三对音频信号输入端子6，三对音频信号输入端子6沿盆架1的圆周方向等间隔排列，且盆架1上设有便于供连接外部线缆的插槽，每对音频信号输入端子6分别与一个音圈32的引线电性连接。其中，每对音频信号输入端子6包括正极端子和负极端子，每个音圈32的其中一个引线电性连接至一对音频信号输入端子6中的正极端子，另一个引线电性连接至该对音频信号输入端子6中的负极端子，以接收该对音频信号输入端子6输入的音频信号(模拟信号或数字信号)。从而，通过三对音频信号输入端子6同时驱动三个音圈32。通过在盆架1设有多度实现音频信号输入集成端子，各音圈32的正负极引线可分别与盆架1底部中间端子进行连接，这种连接方式既简便了多路输入驱动扬声器制造，也方便音频信号输入的连接。
如图4所示，音盆2上设置有多个加强筋23，能够增加音盆2工作的强度。具体如图4中，多个加强筋23沿音盆2的圆周方向等间隔排列，各加强筋23沿音盆2的径向延伸。加强筋23位于音圈安装孔20之间。且加强筋23自音盆底部21延伸至锥形边缘部22上，从而增强平板音盆底部21和锥形边缘部22之间的强度。
该多路输入驱动的扬声器的工作原理为：音频信号通过盆架1上音频信号输入端子5输入至多个音圈32，多个音圈32因而在磁路组件的作用下同步上下运动，从而推动音盆2振动，进行发声。本发明的多路输入驱动的扬声器，采用底部为平板状的音盆2，在音盆底部21所形成的平面上开设三个或三个以上的音圈安装孔20，并与三个或三个以上的音圈32紧密结合，音圈32再与定位支片4紧密结合，形成三个或三个以上的输入驱动机构3，采用三个或三个以上的磁路组件驱动音圈32，通过三个或三个以上的音圈32推动音盆2，因此不仅可降低产品高度，又能拓宽产品指向性，通过多个音频信号输入，降低产品失真，增加扬声器灵敏度，提高扬声器清晰度。采用集成端子，简化产品本身连接，又方便音频信号输入连接。
该扬声器结构巧妙合理，通过采用平面底带锥形音盆结构，平面底带锥形音盆指向性宽度优于传统扬声器；通过三个或以上音圈分别接收音频信号输入，原声重放与失真优于传统扬声器；通过采用平面底带锥形音盆形状，音盆高度低于传统锥形音盆高度，音盆高度降低同样可以降低产品高度；通过采用三个或以上音圈与三个或以上磁路组件组成的输入驱动结构，增加扬声器灵敏度；通过平面底带锥形音盆与三个或以上音圈紧密连接，三个或以上音圈在U铁磁路中经过三路或以上音频信号输入驱动音圈上下运动推动音盆发声。
上述实施例只为说明本发明的技术构思及特点，是一种优选的实施例，其目的在于熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限定本发明的保护范围。凡根据本发明的精神实质所作的等效变换或修饰，都应涵盖在本发明的保护范围之内。

Claims (15)

  1. 一种多路输入驱动的扬声器，包括盆架及设置于所述盆架上的音盆，其特征在于：各所述输入驱动机构分别包括音圈及用于驱动所述音圈振动的磁路组件；
    所述盆架上设有多个磁路安装孔，每个所述磁路安装孔处至多设置有一个所述磁路组件；
    所述音盆上设有多个音圈安装孔，每个所述音圈安装孔处至多设置有一个所述音圈；
    所述扬声器还包括一个定位支片，所述定位支片上开设有多个音圈孔，各所述音圈分别穿设在对应的所述音圈孔内并和所述定位支片紧密配合。
  2. 根据权利要求1所述的扬声器，其特征在于：所述扬声器还包括三个或三个以上的输入驱动机构，三个或三个以上的所述输入驱动机构沿一圆周等间隔排列。
  3. 根据权利要求2所述的扬声器，其特征在于：所述音盆具有整体呈圆形的平板状的音盆底部，所述圆周的圆心与所述音盆底部的圆心重合，所述音盆底部上开设有三个或三个以上的所述音圈安装孔，所述音圈安装孔的中心线穿过所述圆周，每个所述音圈安装孔中分别设置有一个所述音圈以使所述音圈与所述音盆底部相连；所述定位支片上开设有三个或三个以上的所述音圈孔，三个或三个以上的所述音圈孔沿所述圆周等间隔设置。
  4. 根据权利要求2所述的扬声器，其特征在于：所述盆架上开设有三个或三个以上的所述磁路安装孔，所述磁路安装孔沿所述圆周等间隔排列，每个所述磁路安装孔中分别设置有一个所述磁路组件。
  5. 根据权利要求3所述的扬声器，其特征在于：所述音盆还具有自所述音盆底部的外缘向上倾斜延伸的锥形边缘部，所述锥形边缘部通过轭环固定连接于所述盆架。
  6. 根据权利要求1所述的扬声器，其特征在于：所述盆架上具有环绕所述多个磁路安装孔的凸缘，所述定位支片与所述凸缘相互配合以使所述定位支片卡于所述凸缘的内壁之间。
  7. 根据权利要求1所述的扬声器，其特征在于：所述定位支片具有平板状的主体部位， 所述音圈孔开设在所述主体部位上。
  8. 根据权利要求7所述的扬声器，其特征在于：所述主体部位包括相互层叠的织物层和塑料薄片层。
  9. 根据权利要求1所述的扬声器，其特征在于：所述盆架上开设有透气孔，所述透气孔开设有所述多个磁路安装孔之间。
  10. 根据权利要求1所述的扬声器，其特征在于：各所述输入驱动机构还分别包括防尘罩，每个所述音圈安装孔上覆盖设置有一个所述防尘罩。
  11. 根据权利要求1所述的扬声器，其特征在于：所述盆架上设置有多对音频信号输入端子，每对所述音频信号输入端子分别与一个所述音圈的引线电性连接。
  12. 根据权利要求1所述的扬声器，其特征在于：所述磁路组件包括具有内腔的U铁、设置于所述U铁内的磁钢及磁极芯，所述磁钢及磁极芯与所述U铁的内壁之间形成有磁隙，所述音圈可上下移动地插设于所述磁隙中，所述U铁的上缘固定连接于所述盆架的所述磁路安装孔处。
  13. 根据权利要求1所述的扬声器，其特征在于：所述音盆上设置有多个加强筋。
  14. 根据权利要求1所述的扬声器，其特征在于：所述多个输入驱动机构沿圆形排列或沿直线排列或为阵列式排列。
  15. 根据权利要求1所述的扬声器，其特征在于：所述扬声器包括三个或三个以上的所述输入驱动机构，三个或三个以上的所述输入驱动机构沿一圆周等间隔排列，所述音盆具有整体呈圆形的平板状的音盆底部，所述圆周的圆心与所述音盆底部的圆心重合，所述音盆底部上开设有三个或三个以上的所述音圈安装孔，所述音圈安装孔的中心线穿过所述圆周，每个所述音圈安装孔中分别设置有一个所述音圈以使所述音圈与所述音盆底部相连；所述扬声器还包括一个定位支片，所述定位支片上开设有三个或三个以上的音圈孔，三个或三个以上的所述音圈孔的沿所述圆周等间隔设置，各所述音圈分别穿设在对应的所述音圈孔内并和所述定位支片紧密配合。
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