WO2020125169A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2020125169A1
WO2020125169A1 PCT/CN2019/111092 CN2019111092W WO2020125169A1 WO 2020125169 A1 WO2020125169 A1 WO 2020125169A1 CN 2019111092 W CN2019111092 W CN 2019111092W WO 2020125169 A1 WO2020125169 A1 WO 2020125169A1
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WO
WIPO (PCT)
Prior art keywords
sound
voice coil
fixed
diaphragm
generating device
Prior art date
Application number
PCT/CN2019/111092
Other languages
English (en)
French (fr)
Inventor
宋威
张帆
陶伟伟
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
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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 WO2020125169A1 publication Critical patent/WO2020125169A1/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
    • H04R15/00—Magnetostrictive transducers
    • 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
    • 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 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811—Enclosures comprising vibrating or resonating arrangements for 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
    • H04R7/04—Plane diaphragms
    • 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
    • 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 utility model relates to the technical field of electronic equipment, in particular to a sound-emitting device.
  • the voice coil of the sound-generating device in the related art is directly glued and fixed to the surface of the sound membrane, resulting in the overflow of glue on both sides of the voice coil, so that the glue part takes up the vibration space of the sound membrane, so that the actual vibration space of the sound membrane is smaller than the theoretical design space, which affects Acoustic performance of sound-producing devices.
  • the purpose of the utility model is to overcome the above technical problems and provide a sound-generating device with better acoustic performance.
  • the present invention provides a sound-generating device, including a basin frame and a magnetic circuit system and a vibration system fixed to the basin frame, the vibration system includes a sound membrane and is fixed below the sound membrane and driven A voice coil that vibrates and sounds from the sound membrane, the voice coil includes a pair of opposed long-axis edges and a pair of opposed short-axis edges, the long-axis edges and the short-axis edges are connected end to end
  • the sound film is provided with a through hole corresponding to the position of the long axis side, the through hole is filled with a glue part, and the long axis side of the voice coil is glued to the sound film through the glue part fixed.
  • the sound film includes an upper surface away from the magnetic circuit system and a lower surface disposed opposite to the upper surface, and the through hole penetrates the upper surface and the lower surface.
  • the glue part includes a first surface glued and fixed to the voice coil and a second surface opposite to the first surface, the second surface being flush with the upper surface.
  • the shape of the through hole matches the shape of the long axis side.
  • the sound membrane includes a diaphragm fixed to the basin frame and a dome attached above the diaphragm, and the through hole sequentially penetrates the vibrating membrane and the dome.
  • the vibration system further includes an auxiliary diaphragm fixed to the basin frame, one end of the auxiliary diaphragm is fixed to the basin frame, and the other end is fixed to the end of the voice coil away from the diaphragm.
  • the vibration system further includes a centering support piece that supports the voice coil and is electrically connected to the voice coil, and the centering support piece is sandwiched between the voice coil and the auxiliary diaphragm.
  • the magnetic circuit system includes a yoke, a main magnetic steel assembled at the center of the yoke, and a main pole core attached to the surface of the main magnetic steel.
  • the sound-generating device provided by the utility model is provided with two through holes matching the shape of the long axis side of the voice coil at positions corresponding to the two long axis sides of the voice coil, and The hole is filled with glue to connect the voice coil and the sound film through the glue to avoid the glue overflowing and adhering to the surface of the sound film and occupying the vibration space of the sound film.
  • the actual vibration space of the sound film is equal to the theoretical design space, and the utilization rate of the Z direction space is more Excellent, the acoustic performance of the sound-generating device is better.
  • FIG. 1 is a structural diagram of a sound-generating device provided by the utility model
  • 3 is a cross-sectional view of the sound-generating device provided by the utility model
  • FIG. 4 is a partially enlarged view of part A shown in FIG. 3.
  • the present invention provides a sound-generating device 100 including a basin frame 1 and a magnetic circuit system 2 and a vibration system 3 fixedly connected to the basin frame.
  • the magnetic circuit system 2 includes a yoke 21, a main magnet 22 assembled at the center of the yoke 21, and a main pole core 23 attached to the surface of the main magnet 22.
  • the main pole core 23 is used for Therefore, the main magnetic steel 22 is magnetically guided to reduce the outflow of magnetic lines of force and effectively improve the driving force of the magnetic circuit system 2.
  • the vibration system 3 includes a sound membrane 31, a voice coil 32 fixed below the sound membrane 31 and driving the sound membrane 31 to vibrate and sound, an auxiliary diaphragm 33 fixed to the basin frame 1, and supporting the voice coil 32 and a centering support piece 34 electrically connected to the voice coil 32.
  • the sound membrane 31 includes a diaphragm 311 fixed to the basin frame 1 and a dome 312 attached to the upper surface of the diaphragm 311.
  • the manner of fixing the dome 312 to the diaphragm 311 is not limited.
  • the dome 312 is fixed to the upper surface of the diaphragm 311 by gluing.
  • the voice coil 32 includes a pair of opposed long-axis sides 321 and a pair of opposed short-axis sides 322.
  • the long-axis sides 321 and the short-axis sides 322 are connected end to end to form the voice coil 32.
  • auxiliary diaphragm 33 One end of the auxiliary diaphragm 33 is fixed to the basin frame 1, and the other end is fixed to the end of the voice coil 32 away from the diaphragm 311.
  • the auxiliary diaphragm 33 effectively prevents the vibration of the voice diaphragm 31.
  • the voice coil 32 oscillates laterally and effectively improves the stability of the sound-generating device 100.
  • the auxiliary diaphragm 33 also increases the vibration strength of the vibration system 3 and improves the sound-generating performance.
  • the centering support piece 34 is interposed between the voice coil 32 and the auxiliary diaphragm 33. One end of the centering support piece 34 is fixed to the basin frame 1 and the other end is fixed to the voice coil 32.
  • the structure farther away from the end of the diaphragm 311 can further increase the vibration intensity of the sound membrane 31 and improve the sound loudness of the sound emitting device 100.
  • the sound film 31 is provided with a through hole 4 corresponding to the position of the long axis side 321, the through hole 4 is filled with a glue part 5, and the long axis side 321 passes through the The glue part 5 is glued and fixed to the sound film 31.
  • the sound film 31 includes an upper surface 313 away from the magnetic circuit system 2 and a lower surface 314 disposed opposite to the upper surface 313, the through hole penetrates the upper surface 313 and the lower surface 314, The hole 4 sequentially penetrates the diaphragm 311 and the dome 312.
  • the glue part 5 includes a first surface 51 glued and fixed to the voice coil 32 and a second surface 52 disposed opposite to the first surface 51, the second surface 52 is disposed flush with the upper surface 313 .
  • the shape of the through-hole 4 matches the shape of the long-axis side 321.
  • the through-hole 4 is elongated, the number of which is two, and the cross-section is rectangular.
  • the sound-generating device provided by the utility model is provided with two through holes matching the shape of the long axis side of the voice coil at positions corresponding to the two long axis sides of the voice coil, and The hole is filled with glue to connect the voice coil and the sound film through the glue to avoid the glue overflowing and adhering to the surface of the sound film and occupying the vibration space of the sound film.
  • the actual vibration space of the sound film is equal to the theoretical design space, and the utilization rate of the Z direction space is more Excellent, the acoustic performance of the sound-generating device is better.

Landscapes

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

Abstract

本实用新型提供一种发声器件，包括盆架及固接于所述盆架的磁路系统和振动系统，所述振动系统包括音膜和固定于所述音膜下方并驱动所述音膜振动发声的音圈，所述音圈包括一对相对设置的长轴边和一对相对设置的短轴边，所述长轴边和所述短轴边首尾相接围成所述音圈，其特征在于，所述音膜对应所述长轴边的位置开设有通孔，所述通孔内填充有胶水部，所述音圈的长轴边通过所述胶水部与所述音膜胶合固定。与相关技术相比，本实用新型提供的发声器件声学性能更优。

Description

发声器件 技术领域
本实用新型涉电子设备技术领域，尤其涉及一种发声器件。
 背景技术
随着无线通讯的快速发展，全球移动电话越来越多，人们对移动电话的要求不仅仅限于基本通话，高品质的音乐功能已成为人们对移动电话的基本要求之一，因此，发声器件已广泛应用于移动电话中。
 技术问题
相关技术中的发声器件的音圈直接和音膜表面胶合固定，导致音圈两侧溢胶而使胶水部占用了音膜的振动空间，使音膜的实际振动空间小于理论设计空间，从而影响了发声器件的声学性能。
因此，有必要提供一种新的发声器件来解决上述问题。
 技术解决方案
本实用新型的目的是克服上述技术问题，提供一种声学性能更优的发声器件。
为了实现上述目的，本实用新型提供一种发声器件，包括盆架及固接于所述盆架的磁路系统和振动系统，所述振动系统包括音膜和固定于所述音膜下方并驱动所述音膜振动发声的音圈，所述音圈包括一对相对设置的长轴边和一对相对设置的短轴边，所述长轴边和所述短轴边首尾相接围成所述音圈，所述音膜对应所述长轴边的位置开设有通孔，所述通孔内填充有胶水部，所述音圈的长轴边通过所述胶水部与所述音膜胶合固定。
优选的，所述音膜包括远离所述磁路系统的上表面和与所述上表面相对设置的下表面，所述通孔贯穿所述上表面和所述下表面。
优选的，所述胶水部包括与所述音圈胶合固定的第一表面和与所述第一表面相对设置的第二表面，所述第二表面与所述上表面平齐。
优选的，所述通孔的形状与所述长轴边的形状相匹配。
优选的，所述音膜包括固定于所述盆架的振膜和贴设于所述振膜上方的球顶，所述通孔依次贯穿所述振膜和所述球顶。
优选的，所述振动系统还包括固定于所述盆架的辅助振膜，所述辅助振膜一端固定于所述盆架，另一端固定于所述音圈远离所述振膜的一端。
优选的，所述振动系统还包括支撑所述音圈并与所述音圈电连接的定心支片，所述定心支片夹设于所述音圈与所述辅助振膜之间。
优选的，所述磁路系统包括磁轭、组配于所述磁轭中央处的主磁钢及贴附于所述主磁钢表面的主极芯。
 有益效果
与相关技术相比，本实用新型提供的发声器件通过在音膜对应音圈两条长轴边的位置设置两个与所述音圈长轴边形状相匹配的通孔，并在所述通孔内填充胶水使音圈与音膜通过胶水连接，避免胶水溢出粘接到音膜表面而占用音膜的振动空间，最终使音膜的实际振动空间等于理论设计空间，Z向空间利用率更优，该发声器件的声学性能更佳。
 附图说明
为了更清楚地说明本实用新型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实用新型的一些实施例，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为本实用新型提供的发声器件的结构图；
图2为本实用新型提供的发声器件的分解图；
图3为本实用新型提供的发声器件的剖视图；
图4为图3所示A部分的局部放大图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型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实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，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，都属于本实用新型保护的范围。
请同时参阅图1和图2，本实用新型提供一种发声器件100，包括盆架1及固接于所述盆架的磁路系统2和振动系统3。
所述磁路系统2包括磁轭21、组配于所述磁轭21中央处的主磁钢22及贴附于所述主磁钢22表面的主极芯23，所述主极芯23用于为所述主磁钢22导磁，减少磁力线外流，有效提高所述磁路系统2的驱动力。
所述振动系统3包括音膜31、固定于所述音膜31下方并驱动所述音膜31振动发声的音圈32、固定于所述盆架1的辅助振膜33及支撑所述音圈32并与所述音圈32电连接的定心支片34。
所述音膜31包括固定于所述盆架1的振膜311和贴设于所述振膜311上表面的球顶312，所述球顶312固定于所述振膜311的方式不限，比如所述球顶312通过胶合方式固定于所述振膜311的上表面。
所述音圈32包括一对相对设置的长轴边321和一对相对设置的短轴边322，所述长轴边321和所述短轴边322首尾相接围成所述音圈32。
所述辅助振膜33一端固定于所述盆架1，另一端固定于所述音圈32远离所述振膜311的一端，所述辅助振膜33有效防止了所述音膜31振动时所述音圈32产生横向摆动，及有效提高了所述发声器件100的稳定性，同时所述辅助振膜33还提高了所述振动系统3的振动强度，改善发声性能。
所述定心支片34夹设于所述音圈32与所述辅助振膜33之间，所述定心支片34一端固定于所述盆架1，另一端固定于所述音圈32远离所述振膜311的一端，该结构设置可进一步提高所述音膜31的振动强度，改善所述发声器件100的发声响度。
请同时参阅图3和图4，所述音膜31对应所述长轴边321的位置开设有通孔4，所述通孔4内填充有胶水部5，所述长轴边321通过所述胶水部5与所述音膜31胶合固定。
所述音膜31包括远离所述磁路系统2的上表面313和与所述上表面313相对设置的下表面314，所述通孔贯穿所述上表面313和下表面314，即所述通孔4依次贯穿所述振膜311和所述球顶312。
所述胶水部5包括与所述音圈32胶合固定的第一表面51和与所述第一表面51相对设置的第二表面52，所述第二表面52与所述上表面313平齐设置。
优选的，所述通孔4的形状与所述长轴边321的形状相匹配，具体的，所述通孔4呈长条状，其数量为两个，其横截面呈矩形。
与相关技术相比，本实用新型提供的发声器件通过在音膜对应音圈两条长轴边的位置设置两个与所述音圈长轴边形状相匹配的通孔，并在所述通孔内填充胶水使音圈与音膜通过胶水连接，避免胶水溢出粘接到音膜表面而占用音膜的振动空间，最终使音膜的实际振动空间等于理论设计空间，Z向空间利用率更优，该发声器件的声学性能更佳。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (8)

  1. 一种发声器件，包括盆架及固接于所述盆架的磁路系统和振动系统，所述振动系统包括音膜和固定于所述音膜下方并驱动所述音膜振动发声的音圈，所述音圈包括一对相对设置的长轴边和一对相对设置的短轴边，所述长轴边和所述短轴边首尾相接围成所述音圈，其特征在于，所述音膜对应所述长轴边的位置开设有通孔，所述通孔内填充有胶水部，所述音圈的长轴边通过所述胶水部与所述音膜胶合固定。
  2. 根据权利要求1所述的发声器件，其特征在于，所述音膜包括远离所述磁路系统的上表面和与所述上表面相对设置的下表面，所述通孔贯穿所述上表面和所述下表面。
  3. 根据权利要求2所述的发声器件，其特征在于，所述胶水部包括与所述音圈胶合固定的第一表面和与所述第一表面相对设置的第二表面，所述第二表面与所述上表面平齐。
  4. 根据权利要求1所述的发声器件，其特征在于，所述通孔的形状与所述长轴边的形状相匹配。
  5. 根据权利要求1所述的发声器件，其特征在于，所述音膜包括固定于所述盆架的振膜和贴设于所述振膜上方的球顶，所述通孔依次贯穿所述振膜和所述球顶。
  6. 根据权利要求5所述的发声器件，其特征在于，所述振动系统还包括固定于所述盆架的辅助振膜，所述辅助振膜一端固定于所述盆架，另一端固定于所述音圈远离所述振膜的一端。
  7. 根据权利要求6所述的发声器件，其特征在于，所述振动系统还包括支撑所述音圈并与所述音圈电连接的定心支片，所述定心支片夹设于所述音圈与所述辅助振膜之间。
  8. 根据权利要求1所述的发声器件，其特征在于，所述磁路系统包括磁轭、组配于所述磁轭中央处的主磁钢及贴附于所述主磁钢表面的主极芯。
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