WO2020034709A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2020034709A1
WO2020034709A1 PCT/CN2019/088592 CN2019088592W WO2020034709A1 WO 2020034709 A1 WO2020034709 A1 WO 2020034709A1 CN 2019088592 W CN2019088592 W CN 2019088592W WO 2020034709 A1 WO2020034709 A1 WO 2020034709A1
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WIPO (PCT)
Prior art keywords
fixed
magnetic
elastic piece
circuit system
basin frame
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
Application number
PCT/CN2019/088592
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English (en)
French (fr)
Inventor
周家盛
张龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
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Filing date
Publication date
Application filed by AAC Acoustic Technologies Shenzhen Co Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2020034709A1 publication Critical patent/WO2020034709A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/126—Supporting or mounting
    • 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
    • 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Definitions

  • the utility model relates to the field of electro-acoustic conversion, in particular to a sound generating device applied to portable electronic products.
  • the sound generating device of the related art includes a basin frame, a vibration system fixed to the basin frame, a magnetic circuit system, and an elastic piece fixing the magnetic circuit system to the basin frame.
  • the magnetic circuit system includes a magnetic bowl bottom wall, a magnetic bowl side wall bent and extended from the magnetic bowl bottom wall, and a magnetic steel fixed to the magnetic bowl bottom wall, and the magnetic steel and the magnetic bowl side wall The gap forms a magnetic gap.
  • the elastic piece fixes the magnetic circuit system to the basin frame by being fixed to a side wall of the magnetic bowl.
  • This structure needs to set the side wall of the magnetic bowl, so that the magnetic circuit system can only be designed as a unit magnetic circuit structure of magnetic steel, which limits the improvement of the sensitivity and vibration amplitude of the sounding device, that is, limits its acoustics. Performance improvement.
  • the purpose of the utility model is to overcome the above technical problems and provide a sounding device with high sensitivity, large vibration amount and excellent acoustic performance.
  • the present invention provides a sound-emitting device, which includes a basin frame, a magnetic circuit system, and an elastic piece fixing the magnetic circuit system to the basin frame;
  • the magnetic circuit system includes a yoke and a fixed
  • the auxiliary magnetic steel; one end of the elastic piece is fixed to the basin frame, and the other end of the elastic piece is fixed to the upper splint.
  • the elastic piece includes a ring-shaped main body portion fixed to the basin frame and a fixing portion extending from the main body portion in a direction close to the upper splint, and the fixing portion is fixed to the upper splint.
  • the upper clamping plate includes a bottom surface fixed to the secondary magnetic steel, a top surface opposite to the bottom surface, and a groove recessed from the top surface to the bottom surface, and the fixing portion is received and fixed in the Mentioned groove.
  • the depth of the groove is equal to the thickness of the fixing portion.
  • the upper plywood further includes an extension wall protruding from the side of the basin frame corresponding to the groove in the direction of the basin frame, and the fixing portion is at least partially supported by the extension. wall.
  • the magnetic circuit system of the present invention includes a yoke and a main magnetic steel fixed to the yoke, at least two auxiliary magnetic steels arranged around opposite sides of the main magnetic steel, and a cover
  • An upper clamping plate fixed to the auxiliary magnetic steel is provided; one end of the elastic piece is fixed to the basin frame, and the other end of the elastic piece is fixed to the upper clamping plate.
  • the shrapnel does not directly contact the magnetic circuit system to avoid affecting the sensitivity of the sounding device.
  • the structure is a three magnetic circuit structure, which can increase the driving force of the magnetic circuit system, thereby effectively increasing the amount of vibration amplitude. That is, the acoustic performance of the sound emitting device is effectively improved.
  • FIG. 1 is a schematic diagram of a three-dimensional structure of a sound generating device of the present invention
  • FIG. 2 is an exploded schematic view of a three-dimensional structure of a sound generating device of the present invention
  • Fig. 3 is a sectional view taken along line A-A in Fig. 1.
  • the present invention provides a sound generating device 100, which includes a basin frame 1, a vibration system 2, a magnetic circuit system 3, and an elastic piece 4.
  • the vibration system 2 is fixed to the basin frame 1, the magnetic circuit system 3 is fixedly supported by the basin frame 1 through the elastic sheet 4, and the magnetic circuit system 3 generates a magnetic field to drive the vibration system 2 to generate sound.
  • the magnetic circuit system 3 includes a yoke 31, a magnetic steel 32 fixed to the yoke 31, and an upper clamping plate 33.
  • the magnetic steel 32 includes a main magnetic steel 321 fixed to the yoke 31 and at least two auxiliary magnetic steels 322 arranged on opposite sides of the main magnetic steel 321.
  • a magnetic gap (not shown) is formed between the main magnetic steels 321.
  • This three magnetic circuit structure effectively improves the driving force of the magnetic circuit system 3, thereby effectively improving the sensitivity and vibration amplitude of the sound generating device 100, that is, effectively improving the acoustic performance of the sound generating device 100, so that Its acoustic performance is better.
  • the upper clamp plate 33 includes a bottom surface 331 fixed to the auxiliary magnetic steel 322, a top surface 332 disposed opposite the bottom surface 331, and a groove 333 recessed from the top surface 332 in the direction of the bottom surface.
  • the bottom surface 331 is covered and fixed to the auxiliary magnetic steel 322.
  • the elastic piece 4 includes a ring-shaped main body portion 41 fixed to the basin frame and a fixing portion 42 extending from the main body portion 41 in a direction close to the upper clamp plate 33.
  • the fixing portion 42 is fixed to the upper portion. Splint 33.
  • the structure of the elastic piece 4 is not limited to this ring-shaped integrated structure, and may also have multiple split structures, which are all feasible.
  • one end of the elastic piece 4 is fixed to the basin frame 1, and the other end of the elastic piece 4 is fixed to the upper plate 33.
  • the fixing portion 42 is received and fixed in the groove 333.
  • a groove depth of the groove 333 is equal to a thickness of the fixing portion 42. This structure is provided so that the elastic sheet 4 does not increase the overall thickness of the magnetic circuit system 3 when the elastic circuit 4 is fixed to support the magnetic circuit system 3, which is beneficial to the light and thin development of the sound generating device 100.
  • the upper plywood 33 further includes an extension wall 334 protruding from the position of the side close to the basin frame 1 corresponding to the groove 333 in the direction of the basin frame 1, and the fixing portion 42 is at least partially supported by the extension wall 334.
  • the extension wall 334 further strengthens the fixing strength and stability of the elastic piece 4 and the upper clamping plate 33.
  • the magnetic circuit system of the present invention includes a yoke and a main magnetic steel fixed to the yoke, at least two auxiliary magnetic steels arranged around opposite sides of the main magnetic steel, and a cover
  • An upper clamping plate fixed to the auxiliary magnetic steel is provided; one end of the elastic piece is fixed to the basin frame, and the other end of the elastic piece is fixed to the upper clamping plate.
  • the shrapnel does not directly contact the magnetic circuit system to avoid affecting the sensitivity of the sounding device.
  • the structure is a three magnetic circuit structure, which can increase the driving force of the magnetic circuit system, thereby effectively increasing the amount of vibration amplitude. That is, the acoustic performance of the sound emitting device is effectively improved.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

本实用新型提供了一种发声器件，其包括盆架、磁路系统以及将所述磁路系统固定于所述盆架的弹片，所述磁路系统包括磁轭和固定于所述磁轭的主磁钢、环绕所述主磁钢相对两侧设置的至少两个副磁钢以及分别盖设固定于所述副磁钢的上夹板；所述弹片的一端固定于所述盆架，所述弹片的另一端固定于所述上夹板。与相关技术相比，本实用新型的发声器件灵敏度高、振动量大且声学性能优。

Description

发声器件 技术领域
本实用新型涉及电声转换领域，尤其涉及一种运用于便携式电子产品的发声器件
 背景技术
随着移动互联网时代的到来，智能移动设备的数量不断上升。而在众多移动设备之中，手机无疑是最常见、最便携的移动终端设备。目前，手机的功能极其多样，其中之一便是高品质的音乐功能，因此，用于播放声音的发声器件被大量应用到现在的智能移动设备之中。
相关技术的所述发声器件包括盆架、固定于盆架的振动系统、磁路系统以及将所述磁路系统固定于所述盆架的弹片。所述磁路系统包括磁碗底壁、由所述磁碗底壁弯折延伸的磁碗侧壁以及固定于所述磁碗底壁的磁钢，所述磁钢与所述磁碗侧壁间隔形成磁间隙。
然而，相关技术的所述发声器件中，所述弹片通过固定于所述磁碗侧壁而将所述磁路系统固定于所述盆架。该结构因需要设置所述磁碗侧壁，使得所述磁路系统仅能设计为一个磁钢的单位磁路结构，限制了所述发声器件的灵敏度和振动幅度的改善，即限制了其声学性能的提升。
因此，实有必要提供一种新的发声器件解决上述技术问题。
 技术问题
本实用新型的目的是克服上述技术问题，提供一种灵敏度高、振动量大且声学性能优的发声器件。
 技术解决方案
为达到上述目的，本实用新型提供一种发声器件，其包括盆架、磁路系统以及将所述磁路系统固定于所述盆架的弹片；所述磁路系统包括磁轭和固定于所述磁轭的主磁钢、环绕所述主磁钢相对两侧设置的至少两个副磁钢以及分别盖设固定于所述副磁钢的上夹板，所述上夹板分别盖设固定于所述副磁钢；所述弹片的一端固定于所述盆架，所述弹片的另一端固定于所述上夹板。
优选的，所述弹片包括固定于所述盆架的呈环状的主体部和由所述主体部向靠近所述上夹板方向延伸的固定部，所述固定部固定于所述上夹板。
优选的，所述上夹板包括固定于所述副磁钢的底面、与所述底面相对设置的顶面以及由所述顶面向所述底面方向凹陷的凹槽，所述固定部收容固定于所述凹槽内。
优选的，所述凹槽的槽深度等于所述固定部的厚度。
优选的，所述上夹板还包括由其靠近所述盆架的一侧对应所述凹槽的位置向所述盆架方向凸出延伸的延伸壁，所述固定部至少部分支撑于所述延伸壁。
 有益效果
与相关技术相比，本实用新型的所述磁路系统包括磁轭和固定于所述磁轭的主磁钢、环绕所述主磁钢相对两侧设置的至少两个副磁钢以及分别盖设固定于所述副磁钢的上夹板；所述弹片的一端固定于所述盆架，所述弹片的另一端固定于所述上夹板。上述结构中所述弹片不直接接触磁路系统，避免了对所述发声器件灵敏度的影响，同时该结构为三磁路结构，可以提高磁路系统的驱动力，从而有效地提升振动幅度量，即有效改善了所述发声器件的声学性能。
 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为本实用新型发声器件的立体结构示意图；
图2为本实用新型发声器件的立体结构分解示意图；
图3为沿图1中A-A线的剖示图。
 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。
请参阅图1，本实用新型提供一种发声器件100，其包括盆架1、振动系统2、磁路系统3以及弹片4。
所述振动系统2固定于所述盆架1，所述磁路系统3通过所述弹片4固定支撑于所述盆架1，所述磁路系统3产生磁场驱动所述振动系统2振动发声。
请结合参阅图2-3，所述磁路系统3包括磁轭31、固定于所述磁轭31的磁钢32以及上夹板33。
所述磁钢32包括固定于所述磁轭31的主磁钢321和环绕所述主磁钢321相对两侧设置的至少两个副磁钢322，两个所述副磁钢322与所述主磁钢321之间形成磁间隙（图未示）。这种三磁路结构有效提高了所述磁路系统3的驱动力，从而有效的提升了所述发声器件100的灵敏度和振动幅度量，即有效改善了所述发声器件100的声学性能，使其声学性能更优。
所述上夹板33包括固定于所述副磁钢322的底面331、与所述底面331相对设置的顶面332以及由所述顶面332向所述底面方向凹陷的凹槽333。所述底面331盖设固定于所述副磁钢322。
所述弹片4包括固定于所述盆架的呈环状的主体部41和由所述主体部41向靠近所述上夹板33方向延伸的固定部42，所述固定部42固定于所述上夹板33。当然，所述弹片4的结构不限于此环状一体结构，也可以多个分体结构，这都是可行的。
本实施方式中，所述弹片4的一端固定于所述盆架1，所述弹片4的另一端固定于所述上夹板33。
具体的，所述固定部42收容固定于所述凹槽333内。
更优的，所述凹槽333的槽深度等于所述固定部42的厚度。该结构设置使得所述弹片4固定支撑所述磁路系统3时不会增加所述磁路系统3的整体厚度，有利于所述发声器件100的轻薄化发展。
本实施方式中，所述上夹板33还包括由其靠近所述盆架1的一侧对应所述凹槽333的位置向所述盆架1方向凸出延伸的延伸壁334，所述固定部42至少部分支撑于所述延伸壁334。所述延伸壁334进一步加强了所述弹片4与所述上夹板33的固定强度和稳定性。
与相关技术相比，本实用新型的所述磁路系统包括磁轭和固定于所述磁轭的主磁钢、环绕所述主磁钢相对两侧设置的至少两个副磁钢以及分别盖设固定于所述副磁钢的上夹板；所述弹片的一端固定于所述盆架，所述弹片的另一端固定于所述上夹板。上述结构中所述弹片不直接接触磁路系统，避免了对所述发声器件灵敏度的影响，同时该结构为三磁路结构，可以提高磁路系统的驱动力，从而有效地提升振动幅度量，即有效改善了所述发声器件的声学性能。
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 (5)

  1. 一种发声器件，其包括盆架、磁路系统以及将所述磁路系统固定于所述盆架的弹片，其特征在于，所述磁路系统包括磁轭和固定于所述磁轭的主磁钢、环绕所述主磁钢相对两侧设置的至少两个副磁钢以及分别盖设固定于所述副磁钢的上夹板；所述弹片的一端固定于所述盆架，所述弹片的另一端固定于所述上夹板。
  2. 根据权利要求1所述的发声器件，其特征在于，所述弹片包括固定于所述盆架的呈环状的主体部和由所述主体部向靠近所述上夹板方向延伸的固定部，所述固定部固定于所述上夹板。
  3. 根据权利要求2所述的发声器件，其特征在于，所述上夹板包括固定于所述副磁钢的底面、与所述底面相对设置的顶面以及由所述顶面向所述底面方向凹陷的凹槽，所述固定部收容固定于所述凹槽内。
  4. 根据权利要求3所述的发声器件，其特征在于，所述凹槽的槽深度等于所述固定部的厚度。
  5. 根据权利要求3所述的发声器件，其特征在于，所述上夹板还包括由其靠近所述盆架的一侧对应所述凹槽的位置向所述盆架方向凸出延伸的延伸壁，所述固定部至少部分支撑于所述延伸壁。
PCT/CN2019/088592 2018-08-14 2019-05-27 发声器件 Ceased WO2020034709A1 (zh)

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CN201821304355.X 2018-08-14
CN201821304355.XU CN208798191U (zh) 2018-08-14 2018-08-14 发声器件

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208798191U (zh) * 2018-08-14 2019-04-26 瑞声科技(新加坡)有限公司 发声器件

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