WO2021088937A1 - 一种发声装置 - Google Patents

一种发声装置 Download PDF

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Publication number
WO2021088937A1
WO2021088937A1 PCT/CN2020/126833 CN2020126833W WO2021088937A1 WO 2021088937 A1 WO2021088937 A1 WO 2021088937A1 CN 2020126833 W CN2020126833 W CN 2020126833W WO 2021088937 A1 WO2021088937 A1 WO 2021088937A1
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WO
WIPO (PCT)
Prior art keywords
connecting portion
voice coil
sounding device
support piece
centering support
Prior art date
Application number
PCT/CN2020/126833
Other languages
English (en)
French (fr)
Inventor
杨健斌
强寿松
刘春发
Original Assignee
歌尔股份有限公司
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 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Priority to US17/774,550 priority Critical patent/US20220377464A1/en
Publication of WO2021088937A1 publication Critical patent/WO2021088937A1/zh

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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
    • 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
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; 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
    • 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 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor

Definitions

  • the present invention relates to the technical field of electro-acoustic conversion, in particular to a sound generating device.
  • the centering support piece is one of the basic components of the sound device. Its main function is to ensure the correct position of the voice coil in the magnetic gap.
  • the vibration system When the voice coil is under force, the vibration system only reciprocates in the axial direction and provides the vibration system operation.
  • traditional sound generating devices such as large horn devices
  • the centering support piece is elastic.
  • the structure of the traditional centering support piece makes the big horn vibrate along it.
  • the height in the direction increases; in addition, the traditional sounding device requires additional brocade wire to realize the electrical connection between the voice coil and the external circuit, and the brocade wire needs to occupy the internal space of the sounding device during the alignment process.
  • the present invention provides a new type of sound generating device.
  • An object of the present invention is to provide a sound generating device.
  • a sound generating device includes:
  • a voice coil the voice coil includes a voice coil body and a skeleton, and the voice coil body is wound outside the skeleton;
  • a centering support piece has a first connecting portion and a second connecting portion, the first connecting portion is fixedly connected to the voice coil; the second connecting portion is fixed on the sound generating device;
  • a plane elastic member is provided between the first connecting portion and the second connecting portion, and the plane elastic member is bent and extends from the first connecting portion to the second connecting portion;
  • the centering support piece is made of conductive material, and the centering support piece is configured to form electrical communication with the voice coil;
  • the height range of the sounding device in its vibration direction is 5-200mm.
  • the sound emitting device further includes a housing, and the second connecting portion is fixed on the housing;
  • the housing is injection molded with conductive terminals, the conductive terminals are configured to be connected to an external circuit, and the second connecting portion is electrically connected to the conductive terminals.
  • the centering support piece is a linear structure integrally wound by a metal wire.
  • the metal wire is any one of copper wire, iron wire, steel wire, and alloy wire.
  • the first connecting portion is connected to a side surface of the voice coil body close to the end surface thereof, so that the centering support piece and the voice coil are in electrical communication;
  • the first connecting portion is connected to the side surface of the frame, so that the centering support piece and the voice coil are in electrical communication.
  • At least one of the centering branches is fixed on the frame; the first connecting part of the centering branch and the first connecting part of one of the adjacent centering branches are fixed by a connecting bridge;
  • the connecting bridge is connected to the second pad so that the centering support piece and the voice coil are in electrical communication.
  • an inner conducting structure is provided on a side surface of the voice coil body close to the end surface thereof, and the first connecting portion is fixedly connected to the inner conducting structure.
  • the sound emitting device further includes a basin-shaped U iron, a magnet is arranged in the basin of the U iron, and the voice coil is arranged in the basin of the U iron and is subjected to the magnetic field of the magnet;
  • the U iron is provided with a gap, and the centering support piece is connected to the voice coil body through the gap.
  • the centering support piece has a planar structure as a whole.
  • the planar elastic member diffuses outward along the direction of the first connecting portion to the second connecting portion, the planar elastic member forms a diffusion angle, and the diffusion angle is not less than 10°.
  • the resonance frequency F0 of the sound emitting device is 50-300 Hz.
  • the height of the sounding device in the vibration direction is 17-19 mm.
  • the sound emitting device is a circular sound emitting device or a square sound emitting device.
  • the present invention provides a sounding device, wherein the centering support piece has a plane elastic member, wherein the plane elastic member is bent and extends from the first connecting part to the second connecting part; compared with the prior art, the present invention reduces The height of the sounding device along its vibration direction is reduced, the volume of the sounding device is reduced, and the lighter and smaller sounding device is realized.
  • the present invention provides a sound generating device, wherein on the one hand, the centering support piece can support and fix the position of the voice coil; on the other hand, the centering support piece is made of conductive material, and the centering support piece It is configured to form electrical communication with the voice coil; compared with the prior art, the present invention reduces the use of brocade threads and reduces the height of the sounding device in its vibration direction.
  • Figure 1 is a schematic diagram of the structure of the sound generating device of the present invention.
  • FIG. 2 is a schematic diagram of the structure of the U iron of the present invention.
  • Fig. 3 is a height comparison diagram of the sound generating device of the present invention and the existing sound generating device.
  • Fig. 4 shows the impedance curves of the sound generating device of the present invention and the conventional sound generating device.
  • Fig. 5 is a distortion curve diagram of the sound generating device of the present invention and the sound generating device in the prior art.
  • a sound generating device includes:
  • a voice coil the voice coil includes a voice coil body and a skeleton, and the voice coil body is wound outside the skeleton;
  • a centering support piece has a first connecting portion and a second connecting portion, the first connecting portion is fixedly connected to the voice coil; the second connecting portion is fixed on the sound generating device;
  • a plane elastic member is provided between the first connecting portion and the second connecting portion, and the plane elastic member is bent and extends from the first connecting portion to the second connecting portion;
  • the centering support piece is made of conductive material, and the centering support piece is configured to form electrical communication with the voice coil;
  • the height range of the sounding device in its vibration direction is 5-200mm.
  • the present invention provides a sounding device, wherein the centering support piece has a plane elastic member, wherein the plane elastic member is bent and extends from the first connecting part to the second connecting part; compared with the prior art, the present invention reduces the vibration of the sounding device along the The height in the direction reduces the volume of the sounding device and realizes the lightness and miniaturization of the sounding device.
  • the present invention provides a sound generating device, wherein on the one hand, a centering support piece can support and fix the position of the voice coil; on the other hand, the centering support piece realizes sound through an inner conduction structure and an outer conduction structure.
  • the electric connection between the ring and the external circuit compared with the prior art, the present invention reduces the use of brocade thread and reduces the height of the sound device in its vibration direction.
  • FIG. 1 is a schematic diagram of the structure of the sound generating device of the present invention.
  • the sounding device includes a voice coil, the voice coil includes a voice coil body and a skeleton, the skeleton is in the shape of a circular tube, the voice coil body is wound outside the skeleton; the bottom end of the voice coil is suspended In the magnetic gap of the magnetic circuit system;
  • the sounding device includes a centering support piece 101 that has a first connecting portion 1011 fixed to the voice coil, a second connecting portion 1013 fixed to the sounding device, and a second connecting portion 1013 fixed to the sounding device.
  • the planar elastic member 1012 between the connecting portion 1011 and the second connecting portion 1013; wherein, as shown in FIG. 1, the planar elastic member 1012 extends from the first connecting portion 1011 to the second connecting portion 1013 along an S-shape Bending and extending, the planar elastic member has a planar structure.
  • the special structure design of the centering support piece in this example can reduce the height of the sound device in its vibration direction.
  • the sound emitting device further includes a housing 100, and the second connecting portion 1013 is fixed on the housing.
  • the housing 100 is provided with a fixing post 102, and the second connecting portion 1013 is sleeved on the fixing post 102; for example, the second connecting portion 1013 is in the shape of a hook, and the second connecting portion 1013 is sleeved.
  • the fixed column 102 is provided with a fixing post 102, and the second connecting portion 1013 is sleeved on the fixing post 102; for example, the second connecting portion 1013 is in the shape of a hook, and the second connecting portion 1013 is sleeved.
  • the centering support piece 101 is made of a conductive material, and the centering support piece 101 is configured to form electrical communication with the voice coil.
  • the housing 100 is injection molded with conductive terminals, the conductive terminals are configured to be connected to an external circuit, and the second connecting portion 1013 is electrically connected to the conductive terminals.
  • the centering support piece 101 is made of conductive material, and the first connecting portion 1011 is fixed on the voice coil, the centering support piece 101 in this example realizes the electrical communication between the voice coil and the external circuit.
  • this example does not require brocade wire, so it saves the brocade wire that occupies the internal space of the sounding device during the alignment process, which can reduce the sound generation.
  • the height of the device in the direction of its vibration.
  • the first connecting portion 1011 is fixed to the voice coil through the inner conducting structure 103, wherein the inner conducting structure 103 is welded to the enameled wire of the voice coil body, which realizes the electrical connection between the first connecting portion and the voice coil.
  • An outer conductive structure 104 is provided near the housing; the second connecting portion 1013 is connected to the outer conductive structure, wherein the outer conductive structure is configured to be connected to an external circuit, that is, the second connecting portion 1013 is realized Electrical connection with external circuits.
  • the centering support piece 101 realizes the electrical communication between the voice coil and the external circuit through the inner conducting structure 103 and the outer conducting structure 104; compared with the prior art, the present invention reduces the use of brocade wires and reduces the noise of the sound generating device.
  • the height of its vibration direction is the most important feature to be used in the voice coil.
  • the first connecting portion 1011 is connected to the side surface of the voice coil body close to the end surface thereof, so that the centering support piece 101 and the voice coil are in electrical communication;
  • the first connecting portion 1011 is connected to the side surface of the frame, so that the centering support piece 101 is in electrical communication with the voice coil.
  • the first connecting portion 1011 When the first connecting portion 1011 is connected to the side surface of the voice coil body close to the end surface thereof, the first connecting portion 1011 of the centering support piece 101 is connected to the side surface of the voice coil body close to the bottom end surface thereof; the second connecting portion 1013 is connected to the housing 100; for example, the first connecting portion 1011 is fixed to the side surface of the voice coil body close to the bottom end surface of the voice coil body through the inner conductive structure 103, wherein the inner conductive structure 103 and the enameled wire of the voice coil body The welding realizes the electrical connection between the first connecting part and the voice coil body.
  • the housing 100 is provided with a fixed post 102, and the second connecting portion 1013 is sleeved on the fixed post 102; for example, the second connecting portion 1013 is in the shape of a hook, and the second connecting portion 1013 is sleeved on On the fixed post 102.
  • the second connecting portion 1013 may be provided with a loop of hook structure to ensure the flatness of the product (at this time, the entire conductive member is a planar structure), or may be provided with a plurality of loops of hook structure, which is in the vertical direction. The orthographic projections overlap.
  • An outer conductive structure 104 is provided near the housing fixing column 102; the second connecting portion 1013 is connected to the outer conductive structure, and the outer conductive structure is configured to be connected to an external circuit, that is, the second connecting portion 1013 is configured to be connected to an external circuit.
  • the second connecting portion 1013 is electrically connected to an external circuit.
  • the first connecting portion 1011 is connected to the side surface of the voice coil body close to the end surface thereof, so that the centering support piece 101 is in electrical communication with the voice coil; as shown in FIG. 3
  • FIG. 3 There is a comparison diagram of the height of the sounding device 300 in the vibration direction with that of the sounding device 200 of the present invention; as shown in FIG.
  • the centering support piece 101 is arranged at the root area of the voice coil body, and the centering support piece After the first connecting portion is electrically connected to the inner conductive structure, it extends from the avoiding portion of the magnetic circuit system to the housing, and is electrically connected to the outer conductive structure, through centering
  • the support piece realizes the electrical communication between the voice coil and the external circuit; the height of the sounding device 200 of the present invention in the vibration direction is significantly lower than the height of the existing sounding device 300.
  • the height range of the sounding device 200 in the vibration direction of the present invention is 5-200 mm, and preferably, the height of the sounding device 200 in the vibration direction is 17-19 mm. This example makes the sound device lighter and smaller.
  • the 5-200mm defined here fully takes into account the current consumer electronic terminals and automotive electronic terminals for sound devices.
  • it can be applied to car audio products. It can also be used in consumer audio products (such as home audio, other smart audio products, etc.).
  • the first connecting portion 1011 When the first connecting portion 1011 is connected to the side surface of the frame, the first connecting portion 1011 of the centering support piece 101 is connected to the side surface of the frame; the second connecting portion 1013 is connected to the housing 100; for example, The first connecting portion 1011 is fixed on the side surface of the frame through a bonding pad, wherein the bonding pad is welded to the enameled wire of the voice coil body, which realizes the electrical connection between the first connecting portion and the voice coil body.
  • first connecting portion 1011 When the first connecting portion 1011 is connected to the side surface of the framework, at least one of the centering support pieces is fixed on the framework; the first connecting portion of the centering support piece is adjacent to one of the centering supports
  • the first connecting portion of the piece is fixed by a connecting bridge; for example, four of the centering support pieces are fixed on the side of the frame, and one of the centering support pieces is connected with the adjacent centering support piece through the connecting bridge; the other two fixed pieces are connected by the connecting bridge.
  • the first connecting portion of the heart support piece is also connected by a connecting bridge.
  • the connecting bridge is a convex structure, and the convex structure is attached to the side surface of the voice coil; specifically, the convex structure is attached to the side surface of the frame.
  • the connecting bridge may also have an arc-shaped structure, and the arc-shaped structure is attached to the side surface of the skeleton.
  • one centering support piece and its adjacent centering support piece are integrally formed with the connecting bridge.
  • the pads are a first pad and a second pad, wherein the first pad is used to fix the first connecting portion, and the first connecting portion is connected to the first pad so that the The centering support piece is in electrical communication with the voice coil; the second pad is used to fix a connecting bridge, and the connecting bridge is connected to the second pad so that the centering support piece and the voice coil are formed Electric connection.
  • the inner conducting structure 103 is a third pad fixed on the side surface of the voice coil body close to the bottom end surface thereof.
  • the third pad has a carrying portion, and the carrying portion It is configured to fix the first connecting portion 1011, and the first connecting portion 1011 is soldered to the third pad.
  • the carrying portion has a bent structure, and this example facilitates the fixation of the first connecting portion 1011 and the third pad.
  • the outer conduction structure 104 is arranged at a position close to the housing; the outer conduction structure 104 is a soldering lug injection molded on the housing; wherein the soldering lug is exposed on the housing On the outer surface.
  • the soldering lug is exposed on the housing On the outer surface.
  • the magnetic circuit system is provided with an avoiding portion corresponding to the centering support piece 101; specifically, as shown in FIG. 2, the magnetic circuit system includes a basin-shaped U iron 105, and the U iron The pelvis of 105 is provided with a magnet; in this example, the avoiding part is a notch 1051 provided on the U iron.
  • the centering support piece 101 when the first connecting portion 1011 is connected to the side surface of the voice coil body close to its end surface, the centering support piece 101 is configured to be able to pass through the gap 1051 and connect to the bottom end surface of the voice coil body. side. That is, the notch 1051 opened on the U iron 105 forms an escape space, so that the centering support piece 101 can generate vibration along the vibration direction of the sound emitting device.
  • the range of the notch angle is 20°-40°, and preferably, the range of the notch angle is 30°. Among them, within this notch angle range, the vibration space of the centering support can be ensured, so that the vibration frequency of the sounding device and the acoustic performance of the sounding device are not affected.
  • the centering support piece is a two-piece split structure symmetrically arranged on both sides of the voice coil body; or, the centering support piece is three or four pieces evenly distributed in the circumferential direction of the voice coil body. Fragment structure. Among them, the centering support pieces are arranged in a symmetrical manner or arranged in an array manner, which can play a good supporting role in fixing the position of the voice coil.
  • the number of corresponding notches provided on the U iron 105 is the same as the number of centering branches provided on the voice coil body.
  • the centering support piece is a four-piece split structure evenly distributed in the circumferential direction of the voice coil body, and four notches are correspondingly provided on the U iron.
  • the centering support piece 101 is integrally wound by a metal wire, wherein the metal wire can be any one of copper wire, iron wire, steel wire, and alloy wire.
  • the centering support piece is integrally wound by metal wire, so that the diaphragm in the sound device can provide better compliance when vibrating under large displacement; at the same time, the centering support piece is made of metal material, which makes it subject to high temperature and high humidity. The environmental impact is small and the fatigue resistance is excellent, which also enables the sound device to work in harsh environments.
  • the planar elastic member 1012 spreads outward along the first connecting portion 1011 toward the second connecting portion 1013, the planar elastic member 1012 forms a diffusion angle, and the diffusion angle is not less than 10°.
  • the mechanical stiffness value of the centering support piece decreases, and the linearity of the mechanical stiffness of the centering support piece becomes better.
  • the mechanical stiffness of the centering support piece ranges from 0.2 to 2 N/mm, and preferably, the mechanical stiffness of the centering support piece is 0.56 N/mm. Within this range of mechanical stiffness, the performance of the centering support piece is better, and at the same time it plays a good role in supporting the fixation of the voice coil position.
  • the abscissa represents the resonant frequency F0
  • the curve b represents the resonant frequency F0 of the traditional sounding device
  • the curve c represents the resonant frequency F0 of the sounding device of the embodiment of the present invention.
  • the resonance frequency F0 of the sound generating device in the embodiment of the present invention is 50-300 Hz, and preferably, the resonance frequency F0 is 170 Hz.
  • the resonant frequency F0 of the traditional sound device is 195 Hz. Therefore, when the centering piece of the embodiment of the present invention is applied to a sound emitting device, the sound emitting device has a good low-frequency response and an intermediate frequency response, thereby improving the acoustic performance of the sounding device; wherein the sounding device can be a large bass sounding device or Midrange sounding device
  • the centering support piece is applied to the sounding device, which can reduce the total harmonic distortion THD of the sounding device and improve the acoustic performance of the sounding device.
  • the abscissa represents the vibration frequency
  • the ordinate represents the total harmonic distortion THD
  • curve b represents the traditional centering piece applied to the sounding device, the total harmonic distortion THD of the sounding device
  • curve c It represents the application of the centering piece of the present invention to the sounding device, and the total harmonic distortion THD of the sounding device.
  • the total harmonic distortion THD of the sound generating device of the present invention is less than 10%; specifically, when the frequency is 100 Hz, the total harmonic distortion THD of the sound generating device is less than 10%; when the frequency is 200 Hz , The total harmonic distortion THD of the sounding device is less than 2.5%; when the frequency is 300Hz, the total harmonic distortion THD of the sounding device is less than 2%;
  • the total harmonic distortion THD of the traditional sounding device is less than 16%; specifically, when the frequency is 100 Hz, the total harmonic distortion THD of the sounding device is less than 16%; When the frequency is 200Hz, the total harmonic distortion THD of the sounding device is less than 5%; when the frequency is 300Hz, the total harmonic distortion THD of the sounding device is less than 2.5%;
  • the sound device in this example has good acoustic performance.

Abstract

本发明公开了一种发声装置。所述发声装置包括音圈，所述音圈包括音圈本体和骨架，所述音圈本体绕制在所述骨架外；定心支片，所述定心支片具有第一连接部和第二连接部，所述第一连接部与所述音圈固定连接；所述第二连接部固定在所述发声装置上；在所述第一连接部和第二连接部之间具有平面弹性件，所述平面弹性件从第一连接部向所述第二连接部弯曲延伸；所述定心支片采用导电材质制成，所述定心支片配置为与所述音圈形成电连通；所述发声装置在其振动方向上的高度范围为5-200mm。本发明采用导电材质制成的定心支片，实现音圈与外部电路的电连通。本发明与现有技术相比，减少了锦丝线的使用，降低了发声装置在其振动方向的高度。

Description

一种发声装置 技术领域
本发明涉及电声转换技术领域，具体地涉及一种发声装置。
背景技术
定心支片是发声装置的基本构件之一，它的作用主要是确保音圈在磁间隙中的正确位置，保持音圈在受力时，振动系统只沿轴向往复运动和提供振动系统作往复运动时的弹力，与振动系统的振膜和音圈共同确定发声装置的谐振频率。
目前传统的发声装置，例如在大喇叭装置中，通常在音圈骨架上固定设定心支片，而且定心支片呈弹波状，传统的定心支片的结构使得在大喇叭沿其振动方向上的高度增加；另外传统的发声装置需要额外设置锦丝线实现音圈与外部电路的电连接，其中锦丝线在顺线过程中需要占据发声装置的内部空间。
因此为了解决上述的任意技术问题，本发明提供一种新型的发声装置。
发明内容
本发明的一个目的是提供一种发声装置。
根据本发明的第一个方面，提供一种发声装置。所述发声装置包括：
音圈，所述音圈包括音圈本体和骨架，所述音圈本体绕制在所述骨架外；
定心支片，所述定心支片具有第一连接部和第二连接部，所述第一连接部与所述音圈固定连接；所述第二连接部固定在所述发声装置上；
在所述第一连接部和第二连接部之间具有平面弹性件，所述平面弹性件从第一连接部向所述第二连接部弯曲延伸；
所述定心支片采用导电材质制成，所述定心支片配置为与所述音圈形成电连通；
所述发声装置在其振动方向上的高度范围为5-200mm。
可选地，所述发声装置还包括壳体，所述第二连接部固定在所述壳体上；
所述壳体上注塑结合有导电端子，所述导电端子被配置为与外部电路连接，所述第二连接部与所述导电端子电性连接。
可选地，所述定心支片为由金属线一体绕制而成的线状结构。
可选地，所述金属线为铜线、铁线、钢线、合金线中的任意一种。
可选地，所述第一连接部连接于所述音圈本体的靠近其端面的侧面，使所述定心支片与所述音圈形成电连通；
或所述第一连接部连接于所述骨架的侧面，使所述定心支片与所述音圈形成电连通。
可选地，至少一个所述定心支片固定在骨架上；所述定心支片的第一连接部与其相邻的其中一个定心支片的第一连接部通过连接桥固定；
其中骨架的侧面对应所述连接桥处设有第二焊盘；
所述连接桥与所述第二焊盘连接以使所述定心支片与所述音圈形成电连通。
可选地，所述音圈本体的靠近其端面的侧面设置内导通结构，所述第一连接部与所述内导通结构固定连接。
可选地，所述发声装置还包括盆型的U铁，所述U铁的盆腔内设有磁铁，所述音圈设置在所述U铁的盆腔内并受到所述磁铁的磁场作用；
所述U铁上开设有缺口，所述定心支片穿过所述缺口连接至所述音圈本体。
可选地，所述定心支片整体为平面结构。
可选地，所述平面弹性件沿第一连接部向第二连接部方向向外扩散，所述平面弹性件形成扩散角度，所述扩散角度不小于10°。
可选地，所述发声装置的谐振频率F0为50～300Hz。
可选地，所述发声装置在振动方向上的高度为17-19mm。
可选地，所述发声装置为圆形发声装置或方形发声装置。
本发明的有益效果：本发明提供一种发声装置，其中定心支片具有平面弹性件，其中平面弹性件从第一连接部向第二连接部弯曲延伸；相对于 现有技术，本发明降低了发声装置沿其振动方向上的高度，减少了发声装置的体积，实现了发声装置的轻小化。
本发明提供一种发声装置，其中定心支片一方面能够对音圈的位置起到支持和固定的作用；另一方面所述定心支片采用导电材质制成，所述定心支片配置为与所述音圈形成电连通；本发明与现有技术相比，减少了锦丝线的使用，降低了发声装置在其振动方向的高度。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本发明的实施例，并且连同其说明一起用于解释本发明的原理。
图1所示为本发明发声装置的结构示意图。
图2所示为本发明U铁的结构示意图。
图3所示为本发明发声装置的高度与现有发声装置的高度对比图。
图4所示为本发明发声装置与传统发声装置的阻抗曲线图。
图5所示为本发明发声装置与现有技术中发声装置的失真曲线图。
具体实施方式
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
根据本发明的一个实施例，提供一种发声装置。所述发声装置包括：
音圈，所述音圈包括音圈本体和骨架，所述音圈本体绕制在所述骨架外；
定心支片，所述定心支片具有第一连接部和第二连接部，所述第一连接部与所述音圈固定连接；所述第二连接部固定在所述发声装置上；
在所述第一连接部和第二连接部之间具有平面弹性件，所述平面弹性件从第一连接部向所述第二连接部弯曲延伸；
所述定心支片采用导电材质制成，所述定心支片配置为与所述音圈形成电连通；
所述发声装置在其振动方向上的高度范围为5-200mm。
本发明提供一种发声装置，其中定心支片具有平面弹性件，其中平面弹性件从第一连接部向第二连接部弯曲延伸；相对于现有技术，本发明降低了发声装置沿其振动方向上的高度，减少了发声装置的体积，实现了发声装置的轻小化。
本发明提供一种发声装置，其中定心支片一方面能够对音圈的位置起到支持和固定的作用；另一方面所述定心支片通过内导通结构和外导通结构实现音圈与外部电路的电连通；本发明与现有技术相比，减少了锦丝线的使用，降低了发声装置在其振动方向的高度。
在一个例子中，如图1所示为本发明发声装置的结构示意图。
所述发声装置包括音圈，所述音圈包括音圈本体和骨架，所述骨架为圆管形，所述音圈本体绕制在所述骨架外；所述音圈的底端悬置在磁路系统的磁间隙中；
所述发声装置包括定心支片101，所述定心支片101具有与所述音圈固定的第一连接部1011、与所述发声装置固定的第二连接部1013以及位于所述第一连接部1011和所述第二连接部1013之间的平面弹性件1012；其中，如图1所示，所述平面弹性件1012沿S型从第一连接部1011向所 述第二连接部1013弯曲延伸，所述平面弹性件呈平面结构，相对于现有技术中弹波状的定心支片，本例子中定心支片特殊结构的设计，能够降低发声装置在其振动方向的高度。
优选地，所述发声装置还包括壳体100，所述第二连接部1013固定在壳体上。例如，所述壳体100上设置有固定柱102，所述第二连接部1013套设在所述固定柱102上；例如所述第二连接部1013呈弯钩形状，第二连接部1013套设在所述固定柱102上。
在一个例子中，所述第一连接部1011和第二连接部1013之间具有平面弹性件1012，所述平面弹性件1012从第一连接部1011向所述第二连接部1013弯曲延伸；所述定心支片101采用导电材质制成，所述定心支片101配置为与所述音圈形成电连通。
例如，所述壳体100上注塑结合有导电端子，所述导电端子被配置为与外部电路连接，所述第二连接部1013与所述导电端子电性连接。由于定心支片101采用导电材质制成，同时第一连接部1011固定在音圈上，因此本例子中定心支片101实现了音圈与外部电路的电连通。与传统的发声装置需要额外设置锦丝线实现音圈与外部电路的电连接相比，本例子不需要锦丝线，因此节省了锦丝线在顺线过程中占据发声装置的内部空间，即可以降低发声装置在其振动方向的高度。
例如，第一连接部1011通过内导通结构103固定在音圈上，其中所述内导通结构103与音圈本体的漆包线焊接，即实现了第一连接部与音圈的电性连接。
在靠近所述壳体的位置设置有外导通结构104；所述第二连接部1013与外导通结构连接，其中外导通结构配置为与外部电路连接，即实现了第二连接部1013与外部电路的电性连接。
所述定心支片101通过内导通结构103和外导通结构104实现音圈与外部电路的电连通；本发明与现有技术相比，减少了锦丝线的使用，降低了发声装置在其振动方向的高度。
在一个例子中，所述第一连接部1011连接于所述音圈本体的靠近其端面的侧面，使所述定心支片101与所述音圈形成电连通；
或所述第一连接部1011连接于所述骨架的侧面，使所述定心支片101与所述音圈形成电连通。
当第一连接部1011连接于所述音圈本体的靠近其端面的侧面，所述定心支片101的第一连接部1011连接于音圈本体的靠近其底端面的侧面；第二连接部1013连接在所述壳体100上；例如，第一连接部1011通过内导通结构103固定在音圈本体的靠近其底端面的侧面，其中所述内导通结构103与音圈本体的漆包线焊接，即实现了第一连接部与音圈本体的电性连接。
所述壳体100上设置有固定柱102，所述第二连接部1013套设在所述固定柱102上；例如所述第二连接部1013呈弯钩形状，第二连接部1013套设在所述固定柱102上。此处第二连接部1013既可以设置一圈弯钩结构，用以保证产品的平面度(此时整个导电件为一平面结构)，也可以设置多圈弯钩结构，其在竖直方向上的正投影重叠。
其中在靠近所述壳体固定柱102的位置设置有外导通结构104；所述第二连接部1013与外导通结构连接，其中外导通结构配置为与外部电路连接，即实现了第二连接部1013与外部电路的电性连接。
其中本例子中，所述第一连接部1011连接于所述音圈本体的靠近其端面的侧面，使所述定心支片101与所述音圈形成电连通；如图3所示为现有发声装置300在其振动方向的高度与本发明发声装置200在其高度对比图；如图3所示，将定心支片101设置在音圈本体的根部区域，同时所述定心支片的第一连接部与所述内导通结构电性连接后，自所述磁路系统的避让部穿出延伸至所述壳体，并且与所述外导通结构电性连接，通过定心支片实现音圈与外部电路的电连通；本发明的发声装置200在其振动方向的高度明显地低于现有发声装置300的高度。其中本发明发声装置200在其振动方向上的高度范围为5-200mm，优选地，发声装置200在振动方向上的高度为17-19mm。本例子使得发声装置更加轻小化。
需要说明的是，此处所界定的5-200㎜，是充分考虑到了目前消费类电子终端以及汽车电子终端中对于发声装置的需求，对于本技术方案而言，既可以应用在车载音响产品中，也可以应用在消费类音响产品中(例如家 用音响、其他智能音响产品等)。
当所述第一连接部1011连接于所述骨架的侧面，所述定心支片101的第一连接部1011连接于骨架的侧面；第二连接部1013连接在所述壳体100上；例如，第一连接部1011通过焊盘固定在骨架的侧面，其中焊盘与音圈本体的漆包线焊接，即实现了第一连接部与音圈本体的电性连接。
当所述第一连接部1011连接于所述骨架的侧面时，至少一个所述定心支片固定在骨架上；所述定心支片的第一连接部与其相邻的其中一个定心支片的第一连接部通过连接桥固定；例如在骨架的侧面固定四个所述定心支片，其中一个定心支片与其相邻的一个定心支片通过连接桥连接；另外两个定心支片的第一连接部也通过连接桥连接。
其中所述连接桥呈凸型结构，所述凸型结构贴合于所述音圈的侧面；具体地，所述凸型结构贴合于所述骨架的侧面。
可选地，所述连接桥还可以呈弧形结构，所述弧形结构贴合于所述骨架的侧面。
优选地，一个定心支片与其相邻的定心支片与连接桥一体成型。
优选地，所述焊盘为第一焊盘和第二焊盘，其中第一焊盘用于固定所述第一连接部，所述第一连接部与所述第一焊盘连接以使所述定心支片与所述音圈形成电连通；第二焊盘用于固定连接桥，所述连接桥与所述第二焊盘连接以使所述定心支片与所述音圈形成电连通。
优选地，所述内导通结构103为固定在所述音圈本体的靠近其底端面的侧面上的第三焊盘，本例子中所述第三焊盘上具有承载部，所述承载部被配置为用于固定第一连接部1011，所述第一连接部1011与所述第三焊盘焊接。所述承载部呈弯折结构，本例子方便了第一连接部1011与第三焊盘的固定。
优选地，在靠近所述壳体的位置设置所述外导通结构104；所述外导通结构104为注塑在所述壳体上的焊片；其中所述焊片裸露在所述壳体的外表面上。本例子中方便了外部电路与发声装置的连接。
在一个例子中，所述磁路系统上对应所述定心支片101设置有避让部；具体地，如图2所示，所述磁路系统包括盆型的U铁105，所述U铁105 的盆腔内设有磁铁；其中本例子中，所述避让部为设置在所述U铁上的缺口1051。
本例子中，当第一连接部1011连接于所述音圈本体的靠近其端面的侧面时，定心支片101配置为能够穿过所述缺口1051连接至音圈本体的靠近其底端面的侧面。即U铁105上开设的缺口1051形成避让空间，使得定心支片101能够产生沿发声装置的振动方向的振动。
其中，所述缺口角度的范围为20°～40°，优选地，所述缺口角度范围为30°。其中在此缺口角度范围内，能够保证定心支片的振动空间，从而不影响发声装置的振动频率和发声装置的声学性能。
所述定心支片为对称设置在所述音圈本体的两侧的两片分体结构；或者，所述定心支片为在所述音圈本体的周向上均匀分布的三片或四片分体结构。其中定心支片呈对称方式布置或呈阵列方式布置，都能够对音圈的位置固定起到良好的支持作用。
优选地，所述U铁105上对应设置缺口的数量与在所述音圈本体上设置定心支片的数量一致。本例子中，定心支片为在所述音圈本体的周向上均匀分布的四片分体结构，其中U铁上对应设置四处缺口。
在一个例子中，所述定心支片101由金属线一体绕制而成，其中金属线可以采用铜线、铁线、钢线、合金线中的任意一种。其中定心支片由金属线一体绕制而成，使得发声装置中的振膜在大位移下振动时能够提供较好的顺性；同时定心支片采用金属材料，使得其受高温高湿环境影响较小，耐疲劳性较优秀，也使得发声装置能够在恶劣环境中工作。
在一个例子中，所述平面弹性件1012沿第一连接部1011向第二连接部1013方向向外扩散，所述平面弹性件1012形成扩散角度，所述扩散角度不小于10°。本发明人发现，随着扩散角度的增加，定心支片的力学劲度值降低，定心支片的力学劲度线性变好。例如，定心支片的力学劲度范围为0.2～2N/mm，优选地，定心支片的力学劲度为0.56N/mm。在此力学劲度范围内，定心支片的性能更加优良，同时对音圈位置的固定起到良好的支持作用。
本发明人发现，采用本发明的所述定心支片101，将所述定心支片固 定在音圈上时，当发声装置在振动位移，同样可以具有较好的顺性；同时也能够降低发声装置失真，提高发声装置的声学性能。
具体地，如图4所示，其中横坐标表示谐振频率F0，曲线b代表传统发声装置的谐振频率F0；曲线c代表本发明实施例发声装置的谐振频率F0。
其中，本发明实施例发声装置的谐振频率F0为50～300Hz，优选地，谐振频率F0为170Hz。其中传统的发声装置的谐振频率F0为195Hz。因此当本发明实施例的定心支片应用到发声装置内，使得发声装置具有良好的低频响应和中频响应，提高了发声装置的声学性能；其中所述发声装置可为大型的低音发声装置或者中音发声装置
同时定心支片应用到发声装置内，能够降低发声装置的总谐波失真THD，提高发声装置的声学性能。具体地，如图5所示，横坐标表示振动频率，纵坐标表示总谐波失真THD；曲线b代表传统的定心支片应用到发声装置中，发声装置的总谐波失真THD，曲线c代表本发明定心支片应用到发声装置中，发声装置的总谐波失真THD。
例如，在100-300Hz频段范围内，本发明发声装置的总谐波失真THD小于10％；具体地，当频率为100Hz时，发声装置的总谐波失真THD小于10％；当频率为200Hz时，发声装置的总谐波失真THD小于2.5％；当频率为300Hz时,发声装置的总谐波失真THD小于2％；
而当发声装置中设置传统的定心支片时，传统的发声装置的总谐波失真THD小于16％；具体地，当频率为100Hz时，发声装置的总谐波失真THD小于16％；当频率为200Hz时，发声装置的总谐波失真THD小于5％；当频率为300Hz时，发声装置的总谐波失真THD小于2.5％；
因此本例子中发声装置具有良好的声学性能。
需要说明的是，本实施方式中仅以圆形的发声装置作为示例进行说明，但在具体应用时，该技术方案同样可以应用于方形的发声装置中，当然，也可以应用在其他形状的装置中，以上并不用于限定本发明。
虽然已经通过例子对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围 和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (13)

  1. 一种发声装置，其特征在于，所述发声装置包括：
    音圈，所述音圈包括音圈本体和骨架，所述音圈本体绕制在所述骨架外；
    定心支片，所述定心支片具有第一连接部和第二连接部，所述第一连接部与所述音圈固定连接；所述第二连接部固定在所述发声装置上；
    在所述第一连接部和第二连接部之间具有平面弹性件，所述平面弹性件从第一连接部向所述第二连接部弯曲延伸；
    所述定心支片采用导电材质制成，所述定心支片配置为与所述音圈形成电连通；
    所述发声装置在其振动方向上的高度范围为5-200mm。
  2. 根据权利要求1所述的发声装置，其特征在于，所述发声装置还包括壳体，所述第二连接部固定在所述壳体上；
    所述壳体上注塑结合有导电端子，所述导电端子被配置为与外部电路连接，所述第二连接部与所述导电端子电性连接。
  3. 根据权利要求1所述的发声装置，其特征在于，所述定心支片为由金属线一体绕制而成的线状结构。
  4. 根据权利要求3所述的发声装置，其特征在于，所述金属线为铜线、铁线、钢线、合金线中的任意一种。
  5. 根据权利要求1所述的发声装置，其特征在于，所述第一连接部连接于所述音圈本体的靠近其端面的侧面，使所述定心支片与所述音圈形成电连通；
    或所述第一连接部连接于所述骨架的侧面，使所述定心支片与所述音圈形成电连通。
  6. 根据权利要求5所述的发声装置，其特征在于，至少一个所述定心支片固定在骨架上；所述定心支片的第一连接部与其相邻的其中一个定心支片的第一连接部通过连接桥固定；
    其中骨架的侧面对应所述连接桥处设有第二焊盘；
    所述连接桥与所述第二焊盘连接以使所述定心支片与所述音圈形成电连通。
  7. 根据权利要求5所述的发声装置，其特征在于，所述音圈本体的靠近其端面的侧面设置内导通结构，所述第一连接部与所述内导通结构固定连接。
  8. 根据权利要求7所述的发声装置，其特征在于，所述发声装置还包括盆型的U铁，所述U铁的盆腔内设有磁铁，所述音圈设置在所述U铁的盆腔内并受到所述磁铁的磁场作用；
    所述U铁上开设有缺口，所述定心支片穿过所述缺口连接至所述音圈本体。
  9. 根据权利要求1所述的发声装置，其特征在于，所述定心支片整体为平面结构。
  10. 根据权利要求1所述的发声装置，其特征在于，所述平面弹性件沿第一连接部向第二连接部方向向外扩散，所述平面弹性件形成扩散角度，所述扩散角度不小于10°。
  11. 根据权利要求1-10任意一项所述的发声装置，其特征在于，所述发声装置的谐振频率F0为50～300Hz。
  12. 根据权利要求1所述的发声装置，其特征在于，所述发声装置在振动方向上的高度为17-19mm。
  13. 根据权利要求1所述的发声装置，其特征在于，所述发声装置为圆形发声装置或方形发声装置。
PCT/CN2020/126833 2019-11-08 2020-11-05 一种发声装置 WO2021088937A1 (zh)

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CN113079443B (zh) * 2020-01-06 2023-12-22 歌尔股份有限公司 一种发声装置
CN113079442B (zh) * 2020-01-06 2023-12-22 歌尔股份有限公司 一种发声装置
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