WO2016169254A1 - 扬声器装置 - Google Patents

扬声器装置 Download PDF

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Publication number
WO2016169254A1
WO2016169254A1 PCT/CN2015/094671 CN2015094671W WO2016169254A1 WO 2016169254 A1 WO2016169254 A1 WO 2016169254A1 CN 2015094671 W CN2015094671 W CN 2015094671W WO 2016169254 A1 WO2016169254 A1 WO 2016169254A1
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WO
WIPO (PCT)
Prior art keywords
fixing portion
speaker device
pad
piece
piezoelectric
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
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PCT/CN2015/094671
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English (en)
French (fr)
Inventor
蔡晓东
张�成
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Goertek Inc
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Goertek Inc
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Publication date
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Priority to US15/567,943 priority Critical patent/US10237661B2/en
Publication of WO2016169254A1 publication Critical patent/WO2016169254A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/02—Transducers using more than one principle simultaneously
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts

Definitions

  • the invention relates to the field of electroacoustics, and in particular to a loudspeaker device with good medium and high frequency performance.
  • Speaker devices as the main sounding unit of portable electronic terminals, directly affect the use of portable electronic devices.
  • the acoustic performance of speaker devices has received increasing attention in the industry.
  • Prior art speaker devices include vibration systems, magnetic circuit systems, and auxiliary systems.
  • the auxiliary system houses a fixed vibration system and a magnetic circuit system.
  • the vibration system includes a voice coil, a diaphragm and a centering piece.
  • the center of the centering piece is provided with a reinforcing portion;
  • the magnetic circuit system includes a magnet and a magnetic conductive member, and the magnetic circuit system A magnetic gap is provided, and the voice coil is disposed in the magnetic gap, and the current of the conductive voice coil in the magnetic field is changed by the Lorentz force to drive the diaphragm to vibrate.
  • the speaker device of this structure has a high-frequency frequency response curve that drops rapidly at a dozen K Hz, generates a high-frequency cutoff frequency, and cannot produce a higher-frequency sound wave with better acoustic quality. Due to the limitations of the materials and processes of the conventional speaker device, the high-frequency cutoff frequency is difficult to increase, and the mid-high frequency effect of the speaker device is hard to be significantly improved.
  • the technical problem to be solved by the present invention is to provide a speaker device with good mid-high frequency effect.
  • a speaker device includes a vibration system, a magnetic circuit system, and an auxiliary system for housing and fixing the magnetic circuit system and the vibration system, the vibration system including a diaphragm, a centering piece and a voice coil combined
  • the cardiac support piece includes a first fixing portion, a second fixing portion disposed in the first fixing portion, and a connecting arm connecting the first fixing portion and the second fixing portion, and the center of the second fixing portion
  • a piezoelectric sheet is disposed at a position, and the centering piece is provided with a first pad corresponding to the piezoelectric piece, and the piezoelectric piece is electrically connected to the first pad.
  • the second fixing portion is an annular structure, and the outer periphery of the piezoelectric piece is fixedly coupled with the second fixing portion.
  • the diaphragm includes a fixing portion, a middle plane portion, and a folding portion connecting the fixing portion and the plane portion, and the plane portion and the centering piece are secondly fixed. The part is fixedly combined.
  • the centering piece is provided with a second pad, and the second pad is electrically connected to the voice coil.
  • the first pad and the second pad are both disposed on the second fixing portion.
  • the piezoelectric sheet is disposed on a side of the second fixing portion away from the diaphragm.
  • the first fixing portion is provided with a first outer pad and a second outer pad, and the first outer pad is electrically coupled to the first pad, the second soldering The disk is electrically coupled to the second outer pad.
  • the centering piece is provided with a conductive line
  • the first fixing portion, the second fixing portion, and the connecting arm position are each provided with the conductive line.
  • the auxiliary system includes a front cover and an outer casing.
  • the centering piece is fixedly disposed between the front cover and the outer casing.
  • the piezoelectric device is fixed to the second fixing portion at the center of the centering piece
  • the piece, the centering piece is provided with a first pad corresponding to the piezoelectric piece, and the piezoelectric piece is electrically connected to the centering piece and electrically connected to the external circuit.
  • the speaker device of the present invention uses a piezoelectric piece instead of the reinforcing portion of the conventional structure speaker device disposed at the center of the centering piece, and the piezoelectric piece can function as a reinforcing portion to improve the acoustic performance of the speaker device, and at the same time, press
  • the electric film can emit a medium-high frequency audio signal to supplement the audio signal of the voice coil-diaphal sound structure of the present invention.
  • the signal from the piezoelectric sheet is mixed with the audio signal from the voice coil-diaphragm, which effectively improves the mid-high frequency effect of the speaker device and improves the acoustic performance of the speaker device.
  • Figure 1 is an exploded view of a specific embodiment of the present invention
  • Figure 2 is a cross-sectional view of the speaker device of Figure 1;
  • Figure 3 is a perspective view of the centering piece of Figure 1.
  • a specific embodiment of the speaker device of the present invention includes a vibration system, a magnetic circuit system and an auxiliary system.
  • the auxiliary system includes a front cover 11 and a casing 12, and the front cover 11 and the outer casing 12 house a fixed vibration system and a magnetic circuit system.
  • the vibration system includes a diaphragm 4, a centering piece 3 and a voice coil 5 fixedly coupled with the diaphragm 4, and the magnetic circuit system includes a magnet and a magnetic conductive member.
  • the magnetic circuit system is provided with a magnetic gap, and the voice coil 5 Suspended in the magnetic gap.
  • the external electrical signal enters the voice coil 5, and the current change in the voice coil 5 disposed in the magnetic field causes the voice coil 5 to vibrate up and down by the Lorentz force, the voice coil 5 vibrates to vibrate the diaphragm 4, and the diaphragm 4 vibrates to mobilize the air. Sounds.
  • the centering piece 3 includes a first fixing portion 31, and a second fixing portion 32 disposed in the first fixing portion 31.
  • the first fixing portion 31 and the second fixing portion 32 pass.
  • the connecting arm 33 is connected, as shown in FIG. 1 and FIG. 2, the first of the centering piece 3
  • the piezoelectric sheet 2 is disposed at the center of the second fixing portion 32.
  • the piezoelectric speaker of the present invention the piezoelectric sheet 2 serves as another sound source, and cooperates with the sound source composed of the voice coil-diaphragm, and the sound of the piezoelectric sheet 2 has a high frequency effect, and the sound of the sound coil-diaphal sound structure is good.
  • the signal is supplemented.
  • the signal from the piezoelectric sheet 2 is mixed with the audio signal from the voice coil-diaphragm to effectively improve the mid-high frequency effect of the speaker device and improve the acoustic performance of the speaker device.
  • the second fixing portion 32 is provided with a set of first pads 32a.
  • the piezoelectric sheets 2 are electrically connected to the first pads 32a, and the piezoelectric sheets 2 are fixed.
  • the core piece 3 is electrically connected to an external circuit.
  • the second fixing portion 32 of the centering piece 3 has a ring structure.
  • the outer peripheral portion and the second fixing portion of the piezoelectric piece 2 are formed. 32 fixed combination.
  • the second fixing portion 32 is an annular structure, which reduces the weight of the vibration system and is advantageous for improving the acoustic performance of the speaker device.
  • the diaphragm 4 includes a fixing portion, a flat portion at a center position inside the fixing portion, and a folding portion connecting the fixing portion and the flat portion, as shown in FIG.
  • the flat portion of the diaphragm 4 is coupled to the second fixing portion of the centering piece 3
  • the fixing portion of the diaphragm 4 is coupled to the first fixing portion of the centering piece 3.
  • the center position of the plane portion corresponds to the piezoelectric sheet 2 and also has a ring structure, and the diaphragm 4 which is centered at the center position can reduce the weight of the vibration system and improve the acoustic performance of the speaker device.
  • the centering piece 3 is provided with a set of second pads 32b corresponding to the voice coil, and the second pads 32b are welded to the voice coil leads.
  • the first fixing portion 31 is provided with a set of first external pads 31a and a set of second external pads 31b, the first external pads 31a are electrically coupled with the first pads 32a, and the second external pads 31b and the second pads are 32b electrical combination.
  • the first outer pad 31a and the second outer pad 31b are electrically connected to an external electronic circuit, respectively.
  • the centering piece of the embodiment is provided with a conductive line, which may be a flexible conductive circuit board structure.
  • the first fixing part 31, the second fixing part 32 and the connecting arm 33 are all provided with conductive lines to ensure the piezoelectric piece.
  • the voice coil is electrically connected to an external circuit.
  • the piezoelectric sheet 2 is disposed on a side of the centering piece 3 away from the diaphragm 4, and the design facilitates the piezoelectric piece 2, the voice coil 5 and the centering piece 4
  • the design of the electrical connection simplifies the circuit design of the speaker device, reduces the difficulty of production and assembly of the speaker device, and improves production efficiency.
  • the speaker device of the present invention replaces the reinforcing portion provided at the center of the centering piece by the piezoelectric piece instead of the conventional structure speaker device, and the piezoelectric piece can function as a reinforcing portion to improve the acoustic performance of the speaker device, and at the same time,
  • the piezoelectric sheet can emit a medium-high frequency audio signal, which complements the audio signal of the voice coil-diaphal sound structure of the present invention.
  • the signal from the piezoelectric sheet is mixed with the audio signal from the voice coil-diaphragm, which effectively improves the mid-high frequency effect of the speaker device and improves the acoustic performance of the speaker device.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

本发明公开了一种扬声器装置，包括振动系统，磁路系统以及收容固定所述磁路系统及振动系统的辅助系统，所述振动系统包括结合在一起的振膜、定心支片及音圈，所述定心支片包括第一固定部、设置于所述第一固定部内的第二固定部以及连接所述第一固定部及所述第二固定部的连接臂，并且：所述第二固定部中心位置设置有压电片，所述定心支片对应所述压电片设置有第一焊盘，所述压电片与所述第一焊盘电连接。本发明的扬声器装置，压电片发出的信号与音圈—振膜发出的音频信号混合，有效提高扬声器装置的中高频效果，提高扬声器装置的声学性能，因此，本发明扬声器装置具有声学性能好的优点。

Description

扬声器装置 技术领域
本发明涉及电声领域，尤其是涉及一种中高频性能好的扬声器装置。
背景技术
随着科学技术的发展，便携式电子装置受到人们的广泛关注，扬声器装置作为便携式电子终端主要的发声单元，直接影响着便携式电子装置的使用效果。随着人们对便携式电子终端音频效果要求的日益提高，扬声器装置的声学性能越来越受到业界的关注。
现有技术的扬声器装置，包括振动系统，磁路系统和辅助系统。辅助系统收容固定振动系统和磁路系统，振动系统包括音圈、振膜和定心支片，定心支片中心位置设置有补强部；磁路系统包括磁铁和导磁件，磁路系统设置有磁间隙，音圈设置于磁间隙内，利用导电音圈在磁场内的电流变化而受到洛仑兹力振动，带动振膜振动发声。该结构的扬声器装置，其高频频率响应曲线在十几K赫兹会出现快速下跌，产生高频截止频率，无法产生声学质量较好的更高频率的声波。由于传统扬声器装置材料和工艺的限制，其高频截止频率很难提升，扬声器装置的中高频效果也很难获得明显提升。
因此，有必要提出一种改进，以克服现有技术的扬声器装置的缺陷。
发明内容
本发明所要解决的技术问题是提供一种中高频效果好的扬声器装置。
为了实现上述目的，本发明采用以下技术方案：
一种扬声器装置，包括振动系统，磁路系统以及收容固定所述磁路系统及振动系统的辅助系统，所述振动系统包括结合在一起的振膜、定心支片及音圈，所述定心支片包括第一固定部、设置于所述第一固定部内的第二固定部以及连接所述第一固定部及所述第二固定部的连接臂，并且：所述第二固定部中心位置设置有压电片，所述定心支片对应所述压电片设置有第一焊盘，所述压电片与所述第一焊盘电连接。
作为一种优选的技术方案，所述第二固定部为环形结构，所述压电片外周与所述第二固定部固定结合。
作为一种优选的技术方案，所述振膜包括固定部，中间的平面部以及连接所述固定部与所述平面部的折环部，所述平面部与所述定心支片第二固定部固定结合。
作为一种优选的技术方案，作为一种优选的技术方案，所述定心支片设置有第二焊盘，所述第二焊盘与所述音圈电连接。
作为进一步优选的技术方案，所述第一焊盘与所述第二焊盘均设置于所述第二固定部。作为更进一步的技术方案，所述压电片设置于所述第二固定部远离所述振膜一侧。
作为再进一步优选的技术方案，所述第一固定部设置有第一外部焊盘与第二外部焊盘，所述第一外部焊盘与所述第一焊盘电结合，所述第二焊盘与所述第二外部焊盘电结合。
作为更进一步优选的技术方案，所述定心支片设置有导电线路，所述第一固定部、所述第二固定部以及所述连接臂位置均设置有所述导电线路。
作为一种优选的技术方案，所述辅助系统包括前盖和外壳。
作为一种进一步优选的技术方案，所述定心支片固定设置于所述前盖和所述外壳之间。
本发明的扬声器装置，定心支片中心的第二固定部上固定有压电 片，定心支片对应压电片设置有第一焊盘，压电片与定心支片电连接后与外部电路电连接。本发明的扬声器装置，采用压电片代替传统结构扬声器装置设置于定心支片中心位置的补强部，压电片可以起到补强部的作用，提高扬声器装置的声学性能，同时，压电片作为一个独立的发声单元，可以发出中高频的音频信号，对本发明音圈—振膜发声结构的音频信号产生补充。压电片发出的信号与音圈—振膜发出的音频信号混合，有效提高扬声器装置的中高频效果，提高扬声器装置的声学性能。
附图说明
图1为本发明具体实施方式分解图；
图2为图1所示扬声器装置剖视图；
图3为图1中定心支片立体图。
具体实施方式
下面结合附图，详细说明本发明内容：
如图1和图2所示，本发明扬声器装置的具体实施方式，包括振动系统，磁路系统和辅助系统。辅助系统包括前盖11和外壳12，前盖11和外壳12收容固定振动系统和磁路系统。振动系统包括振膜4，与振膜4固定结合的定心支片3和音圈5，磁路系统包括磁铁和导磁件，如图2所示，磁路系统设置有磁间隙，音圈5悬设于所述磁间隙内。外部电信号进入到音圈5内，设置于磁场内的音圈5内电流变化使音圈5受到洛仑兹力而上下振动，音圈5振动带动振膜4振动，振膜4振动策动空气发声。
如图3所示，本发明扬声器装置，定心支片3包括第一固定部31，设置于第一固定部31内的第二固定部32，第一固定部31和第二固定部32通过连接臂33连接，如图1及图2所示，定心支片3的第 二固定部32中心位置设置有压电片2。本发明压电扬声器，压电片2作为另一个发声源，与音圈—振膜组成的发声源配合，压电片2发出的声音高频效果好，对音圈—振膜发声结构的音频信号产生补充。压电片2发出的信号与音圈—振膜发出的音频信号混合，有效提高扬声器装置的中高频效果，提高扬声器装置的声学性能。
如图3所示，第二固定部32上设置有一组第一焊盘32a，在本发明扬声器装置组装生产过程中，压电片2与第一焊盘32a电连接，压电片2通过定心支片3与外部电路电连接。
如图3所示，本实施例的扬声器装置，定心支片3的第二固定部32为环形结构，在本实施例扬声器装置生产过程中，压电片2的外周部与第二固定部32固定结合。第二固定部32为环形结构，降低了振动系统的重量，有利于提高扬声器装置的声学性能。
如图1及图2所示，本实施例的扬声器装置，振膜4包括固定部，设置于固定部内部的位于中心位置的平面部以及连接固定部与平面部的折环部，如图2所示，振膜4的平面部与定心支片3的第二固定部结合，振膜4的固定部与定心支片3的第一固定部结合。本实施例的振膜4，其平面部的中心位置对应压电片2也为环形结构，中心位置去料的振膜4可以降低振动系统的重量，提高扬声器装置的声学性能。
如图3所示，定心支片3对应音圈设置有一组第二焊盘32b，第二焊盘32b与音圈引线焊接。第一固定部31设置有一组第一外部焊盘31a和一组第二外部焊盘31b，第一外部焊盘31a与第一焊盘32a电结合，第二外部焊盘31b与第二焊盘32b电结合。第一外部焊盘31a和第二外部焊盘31b分别与外部电子电路电连接。本实施例的定心支片，设置有导电线路，可以为柔性导电线路板结构，第一固定部31、第二固定部32及连接臂33上均设置有导电线路，以保证将压电片以及音圈与外部电路电连接。
如图2所示，本实施例的扬声器装置，压电片2设置于定心支片3远离振膜4的一侧，该设计便于压电片2、音圈5与定心支片4之间电连接的设计，简化扬声器装置电路设计难度，降低扬声器装置的生产组装难度，提高生产效率。
本发明的扬声器装置，通过采用压电片代替传统结构扬声器装置设置于定心支片中心位置的补强部，压电片可以起到补强部的作用，提高扬声器装置的声学性能，同时，压电片作为一个独立的发声单元，可以发出中高频的音频信号，对本发明音圈—振膜发声结构的音频信号产生补充。压电片发出的信号与音圈—振膜发出的音频信号混合，有效提高扬声器装置的中高频效果，提高扬声器装置的声学性能。
以上仅为本发明实施案例而已，并不用于限制本发明，但凡本领域普通技术人员根据本发明所揭示内容所作的等效修饰或变化，皆应纳入权利要求书中记载的保护范围内。

Claims (10)

  1. 一种扬声器装置，包括振动系统，磁路系统以及收容固定所述磁路系统及振动系统的辅助系统，所述振动系统包括结合在一起的振膜、定心支片及音圈，所述定心支片包括第一固定部、设置于所述第一固定部内的第二固定部以及连接所述第一固定部及所述第二固定部的连接臂，其特征在于：所述第二固定部中心位置设置有压电片，所述定心支片对应所述压电片设置有第一焊盘，所述压电片与所述第一焊盘电连接。
  2. 根据权利要求1所述的扬声器装置，其特征在于：所述第二固定部为环形结构，所述压电片外周与所述第二固定部固定结合。
  3. 根据权利要求1所述的扬声器装置，其特征在于：所述振膜包括固定部，中间的平面部以及连接所述固定部与所述平面部的折环部，所述平面部与所述定心支片第二固定部固定结合。
  4. 根据权利要求1所述的扬声器装置，其特征在于：所述定心支片设置有第二焊盘，所述第二焊盘与所述音圈电连接。
  5. 根据权利要求4所述的扬声器装置，其特征在于：所述第一焊盘与所述第二焊盘均设置于所述第二固定部。
  6. 根据权利要求5所述的扬声器装置，其特征在于：所述压电片设置于所述第二固定部远离所述振膜一侧。
  7. 根据权利要求5所述的扬声器装置，其特征在于：所述第一固定部设置有第一外部焊盘与第二外部焊盘，所述第一外部焊盘与所述第一焊盘电结合，所述第二焊盘与所述第二外部焊盘电结合。
  8. 根据权利要求7所述的扬声器装置，其特征在于：所述定心支片设置有导电线路，所述第一固定部、所述第二固定部以及所述连接臂位置均设置有所述导电线路。
  9. 根据权利要求1所述的扬声器装置，其特征在于：所述辅助系统包括前盖和外壳。
  10. 根据权利要求9所述的扬声器装置，其特征在于：所述定 心支片固定设置于所述前盖和所述外壳之间。
PCT/CN2015/094671 2015-04-22 2015-11-16 扬声器装置 Ceased WO2016169254A1 (zh)

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