WO2021097954A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2021097954A1
WO2021097954A1 PCT/CN2019/123899 CN2019123899W WO2021097954A1 WO 2021097954 A1 WO2021097954 A1 WO 2021097954A1 CN 2019123899 W CN2019123899 W CN 2019123899W WO 2021097954 A1 WO2021097954 A1 WO 2021097954A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic bowl
bowl
bottom wall
wall
Prior art date
Application number
PCT/CN2019/123899
Other languages
English (en)
French (fr)
Inventor
宋威
邵涛
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
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.)
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Publication date
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 WO2021097954A1 publication Critical patent/WO2021097954A1/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
    • 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
    • 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the invention relates to the field of electro-acoustic conversion, in particular to a sound-producing device applied to electronic sound box products.
  • the sound device is also known as a speaker or a horn, which is used in a speaker to convert audio signals into sound for playback.
  • Related art sound generating devices include a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system with a magnetic gap.
  • the magnetic circuit system drives the vibration system to vibrate and emit sound.
  • the magnetic circuit system includes a magnetic bowl and a housing. A magnetic steel unit fixed in the magnetic bowl.
  • the purpose of the present invention is to provide a sound device that can make full use of magnetic force.
  • the present invention provides a sound emitting device, which includes a basin frame, a vibration system supported on the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound, the magnetic circuit system having a magnetic gap,
  • the vibration system includes a voice coil inserted in the magnetic gap, and the magnetic circuit system includes a first magnetic bowl fixed to the basin frame, a magnetic steel unit fixed to the first magnetic bowl, and a cover. At the second magnetic bowl of the magnetic steel unit;
  • the first magnetic bowl includes a first magnetic bowl bottom wall supported and fixed to the basin frame, and the magnetic steel unit is supported on the bottom wall of the first magnetic bowl;
  • the second magnetic bowl includes a second magnetic bowl bottom wall and a second magnetic bowl side wall, the second magnetic bowl bottom wall and the first magnetic bowl bottom wall are arranged directly opposite to each other, and the second magnetic bowl side
  • the wall is bent and extended from the bottom wall of the second magnetic bowl toward the bottom wall of the first magnetic bowl, and the magnetic steel unit, the first magnetic bowl and the side wall of the second magnetic bowl jointly enclose a space The magnetic gap.
  • the bottom wall of the second magnetic bowl is fixed to a side of the magnetic steel unit away from the first magnetic bowl.
  • the first magnetic bowl includes a first magnetic bowl side wall bent and extended from the bottom wall of the first magnetic bowl toward the second magnetic bowl side wall.
  • the side wall of the second magnetic bowl and the magnetic steel unit jointly enclose the magnetic gap.
  • the magnetic steel unit includes a first magnetic steel, a pole core, and a second magnetic steel that are sequentially stacked on the bottom wall of the first magnetic bowl along the vibration direction, and the second magnetic bowl bottom wall is fixed to the
  • the projection of the pole core along the vertical vibration direction partially overlaps the side wall of the first magnetic bowl and the side wall of the second magnetic bowl.
  • the projection of the pole core along the vertical vibration direction completely falls into the voice coil.
  • the vibration system further includes a diaphragm fixed to the basin frame, a skeleton connecting the diaphragm and the voice coil, and an auxiliary diaphragm fixed on the skeleton;
  • the diaphragm includes a vibration part, a folding ring part bent and extended from the periphery of the vibration part, and a fixing part bent and extended by the folding ring part and fixed to the basin frame; the frame and the vibration part Department connection;
  • auxiliary diaphragm One side of the auxiliary diaphragm is fixed to the basin frame, and the other side is fixed to the frame.
  • the magnetic circuit system further includes a relief groove, which penetrates the first magnetic bowl and/or the second magnetic bowl and extends along the vibration direction of the diaphragm;
  • the skeleton extends to the magnetic gap through the relief groove, and the voice coil support is suspended in the magnetic gap.
  • the basin frame includes a bottom wall, an outer wall bent and extended from the periphery of the bottom wall, and an inner wall bent and extended from the bottom wall.
  • the outer wall is arranged around the inner wall and is spaced apart from each other. There is a through opening extending therethrough, and the through opening extends along the vibration direction of the diaphragm;
  • the bottom wall and the inner wall jointly enclose an accommodating space, and the magnetic circuit system is installed in the accommodating space, and the relief groove and the opening are arranged one by one directly opposite;
  • the skeleton is ringed on the outer side of the inner wall and arranged at intervals, and the skeleton sequentially extends into the magnetic gap through the opening and the relief groove.
  • the magnetic circuit system includes a first magnetic bowl, a magnetic steel unit accommodated and fixed in the first magnetic bowl, and a second magnetic steel unit covered by the magnetic steel unit.
  • the wall is bent and extended in a direction close to the bottom wall of the first magnetic bowl, and the magnetic steel unit, the first magnetic bowl and the side walls of the second magnetic bowl jointly enclose the magnetic gap.
  • FIG. 1 is a schematic diagram of the three-dimensional structure of the sound generating device of the present invention
  • Figure 2 is an exploded view of a part of the three-dimensional structure of the sound generating device of the present invention
  • Figure 3 is a sectional view taken along the line A-A in Figure 1;
  • Figure 4 is a schematic diagram of the skeleton three-dimensional structure of the sound generating device of the present invention.
  • FIG. 5 is a schematic diagram of the three-dimensional structure of the magnetic circuit system of the sound generating device of the present invention.
  • Fig. 6 is an exploded schematic view of the three-dimensional structure of the magnetic circuit system of the sound generating device of the present invention.
  • the present invention provides a sound generating device 100, which includes a basin frame 1, a vibration system 2 and a magnetic circuit system 3 with a magnetic gap 30.
  • the vibration system 2 and the magnetic circuit system 3 are respectively supported on the basin frame 1, and the magnetic circuit system 3 drives the vibration system 2 to vibrate and produce sound.
  • the basin frame 1 includes a bottom wall 11, an outer wall 12 bent and extended from the periphery of the bottom wall 11, and an inner wall 13 bent and extended by the bottom wall 11, and the outer wall 12 surrounds the inner wall. 13 set and spaced apart.
  • the inner wall 13 is provided with a through opening 131 extending therethrough, and the through opening 131 extends along the vibration direction of the vibration system 2.
  • the bottom wall 11 and the inner wall 13 jointly enclose a receiving space 10.
  • the vibration system 2 includes: a diaphragm 21, a skeleton 22, a voice coil 23 and an auxiliary diaphragm 24.
  • the diaphragm 21 includes a vibrating portion 211, a folding ring portion 212 extending from the periphery of the vibrating portion 211, and a fixing portion 213 bending and extending from the folding ring portion 212 and fixed to the basin frame 1.
  • the fixing portion 213 is used to fix the diaphragm 21 to the frame 1, and includes a first fixing portion 2131 and a second fixing portion 2132; the first fixing portion 2131 is ring-shaped and Fixed to the outer wall 12, the second fixing portion 2132 has a ring shape and is fixed to the inner wall 13.
  • the folding ring portion 212 is used for improving elastic support and amplitude when the vibrating portion 211 vibrates, and includes a first folding ring portion 2121 in a ring shape and a second folding ring portion 2122 in a ring shape.
  • the first folding ring portion 2121 is arranged around the second folding ring portion 2122 and is spaced apart from each other.
  • the side of the first folding ring portion 2121 away from the second folding ring portion 2122 is connected to the first fixing portion 2131, and the side of the second folding ring portion 2122 away from the first folding ring portion 2121 It is connected to the second fixing portion 2132.
  • the vibrating part 211 is used to radiate sound waves to produce sound when vibrating.
  • the vibrating portion 211 has a ring shape, the vibrating portion 211 is located between the first folding ring portion 2121 and the second folding ring portion 2122, and the outer side of the vibrating portion 211 is connected to the first folding ring portion 2122.
  • a folding ring portion 2121 is connected, and the inner side of the vibrating portion 211 is connected with the second folding ring portion 2122.
  • the skeleton 22 includes a flat wall 221 and an extension wall 222.
  • the flat wall 221 is attached to the side of the vibrating part 211 close to the magnetic circuit system 3 to serve as the dome structure of the diaphragm 21, and the extension wall 222 is formed by the The flat wall 221 bends and extends in a direction away from the diaphragm 21 for connecting with the voice coil 23 and supporting the voice coil 23.
  • the flat wall 221 has a ring shape.
  • the vibrating part 211 is provided with a through hole 2111 penetrating therethrough, and the flat wall 221 completely covers the through hole 2111.
  • the flat wall 221 is a rigid material, which is beneficial to improve the high-frequency acoustic performance of the sound emitting device 100, and the arrangement of the through hole 2111 can reduce the diaphragm 21 to a certain extent. The thickness effectively increases the vibration space of the vibrating part 211.
  • the voice coil 23 is inserted into the magnetic gap 30 and fixedly connected to the extension wall 222.
  • the voice coil 23 drives the extension wall 222 to vibrate to drive the flat wall 221 to vibrate, thereby driving the vibrating part 211 to vibrate and produce sound.
  • the flat wall 221 of the frame 22 serves as the top ball structure of the diaphragm 21 to achieve sound radiation
  • the extension 222 is used to fix the voice coil 23, that is, the frame 22 and the diaphragm 21 form an integrated structure, which reduces The fitting error of the assembly between parts improves its acoustic performance, while simplifying the assembly process and improving production efficiency.
  • the extension wall 222 includes a first extension wall 2221 bent and extended from the flat wall 221 in a direction away from the vibrating portion 211 of the diaphragm 21, and a first extension wall 2221 extending from the first extension wall 2221 toward the The second extension wall 2222 bent and extended in the 3 direction of the magnetic circuit system.
  • the second extension wall 2222 abuts against the outer side of the voice coil 23 and forms a fixed connection.
  • the extension wall 222 may be an integral ring structure, or may be a split structure enclosed in a ring shape. In this embodiment, the extension walls 222 include three and are arranged at equal intervals.
  • auxiliary diaphragm 24 is fixed to the outer wall 12, and the other side is fixed to the end of the first extension wall 2221 away from the flat wall 2222 to prevent lateral swing of the frame 22, thereby avoiding This reduces the lateral swing of the voice coil 23 and improves the stability of the sound emitting device 100.
  • the magnetic circuit system 3 includes a first magnetic bowl 31, a magnetic steel unit 32 fixed in the first magnetic bowl 31, and a space that penetrates the first magnetic bowl 31 and matches the second extension wall 2222
  • the groove 33 and the second magnetic bowl 34 covering the magnetic steel unit 32 are provided. That is, the shape and the number of the relief groove 33 correspond to the shape and the number of the second extension wall 2222.
  • the magnetic circuit system 3 includes a second magnetic bowl 34 covering the magnetic steel unit 32, and the second magnetic bowl 34 guides the magnetic field lines on the side of the magnetic steel unit 32 close to the diaphragm 21 back. Into the magnetic gap 30, the magnetic lines of force of the magnetic circuit system 3 are fully utilized, thereby effectively improving the sensitivity of the sound emitting device.
  • the first magnetic bowl 31 includes a first magnetic bowl bottom wall 311 supported and fixed to the basin frame 1, and the first magnetic bowl bottom wall 311 is bent toward the second magnetic bowl 34
  • the first magnetic bowl side wall 312 extends, and the magnetic steel unit 32 is supported on the first magnetic bowl bottom wall 311.
  • the second magnetic bowl 34 includes a second magnetic bowl bottom wall 341 and a second magnetic bowl side wall 342, and the second magnetic bowl bottom wall 341 and the first magnetic bowl bottom wall 311 are arranged directly opposite to each other.
  • the second magnetic bowl side wall 342 is formed by bending and extending the second magnetic bowl bottom wall 341 toward the first magnetic bowl bottom wall 311.
  • the magnetic steel unit 32 includes a first magnetic steel 321, a pole core 322, and a second magnetic steel 323 sequentially stacked on the bottom wall 311 of the first magnetic bowl along the vibration direction, and the bottom wall 341 of the second magnetic bowl is fixed.
  • the projection of the pole core 322 along the vertical vibration direction partially overlaps the first magnetic bowl side wall 312 and the second magnetic bowl side wall 342, and the pole core 322 extends along the The projection of the vertical vibration direction completely falls into the voice coil 23.
  • the magnetic steel unit 32 and the first magnetic bowl side wall 312 and the second magnetic bowl side wall 342 jointly enclose the magnetic gap 30.
  • the relief groove 33 extends along the vibration direction and penetrates the side wall 312 of the first magnetic bowl.
  • the first extension wall 2221 is arranged around the outer side of the magnetic circuit system 3 and spaced apart, and the second extension wall 2222 extends into the magnetic gap 30 through the relief groove 33 and is connected to the voice coil 23.
  • the second magnetic bowl bottom wall 341 and the first magnetic bowl bottom wall 311 are arranged directly opposite each other, and the second magnetic bowl side wall 342 faces from the second magnetic bowl bottom wall 341. Close to the first magnetic bowl bottom wall 311 to bend and extend, the second magnetic bowl side wall 342 may abut against the first magnetic bowl side wall 312, or may be connected to the first magnetic bowl side wall 312 interval. At this time, the relief groove 33 also penetrates the second magnetic bowl side wall 342 to provide the second extension wall 2222 of the frame 22 with more sufficient movement space and improve reliability.
  • the magnetic circuit system 3 is installed in the accommodating space 10 so that the relief slot 33 and the through opening 131 are arranged one by one.
  • the first extension wall 2221 is arranged around the inner wall 13 at intervals, and the second extension wall 2222 sequentially extends to the magnetic gap 30 through the opening 131 and the relief groove 33
  • the inner part is connected to the outer side of the voice coil 23.
  • the diaphragm 21 Since the diaphragm 21 is fixed on the outer wall 12 and the inner wall 13 of the basin frame 1, the upper part of the containing space 10 enclosed by the inner wall 13 can be exposed. In this embodiment, it is more preferable when the magnetic circuit system 3 is installed in the containing space. After 10 hours, the top surface of the magnetic circuit system 3 is made higher than the vibration part 211 (specifically, the flat wall 221 serving as the dome top) in the vibration direction, forming an exposed structure, and the vibration part 211 has the maximum amplitude The position is lower than or parallel to the top surface of the magnetic circuit system 3, that is, the diaphragm 21 wraps around the top of the magnetic circuit system 3 in the horizontal direction, thereby saving the space of the product in the vibration direction and effectively reducing The thickness of the product.
  • the vibration part 211 specifically, the flat wall 221 serving as the dome top
  • the magnetic circuit system includes a first magnetic bowl, a magnetic steel unit accommodated and fixed in the first magnetic bowl, and a second magnetic steel unit covered by the magnetic steel unit.
  • the wall is bent and extended in a direction close to the bottom wall of the first magnetic bowl, and the magnetic steel unit, the first magnetic bowl and the side walls of the second magnetic bowl jointly enclose the magnetic gap.

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

Abstract

本发明提供了一种发声器件，包括盆架、支撑于盆架的振动系统以及驱动振动系统振动发声的磁路系统，磁路系统具有磁间隙，振动系统包括插设于磁间隙里的音圈，磁路系统包括固定于盆架的第一磁碗、固定于第一磁碗的磁钢单元、盖设于磁钢单元的第二磁碗；第一磁碗包括支撑固定于盆架的第一磁碗底壁，磁钢单元支撑于第一磁碗底壁；第二磁碗包括第二磁碗底壁和第二磁碗侧壁，第二磁碗底壁与第一磁碗底壁间隔正对设置，第二磁碗侧壁由第二磁碗底壁向靠近第一磁碗底壁方向弯折延伸，磁钢单元与第一磁碗以及第二磁碗侧壁共同围成磁间隙。与相关技术相比，本发明的发声器件的磁力得到充分利用，从而有效提升发声器件的灵敏度。

Description

发声器件 技术领域
本发明涉及电声转换领域，尤其涉及一种运用于电子音箱产品的发声器件。
 背景技术
发声器件又名扬声器或喇叭，运用于音箱中实现将音频信号转化为声音播放。
相关技术的发声器件包括盆架、固定于所述盆架的振动系统和具有磁间隙的磁路系统，所述磁路系统驱动所述振动系统振动发声，所述磁路系统包括磁碗和收容固定于所述磁碗内的磁钢单元。
 技术问题
然而，相关技术的发声器件中，磁钢单元的上方没有磁框遮挡，导致磁力会发散出去，没有得到合理利用。
因此，实有必要提供一种新的发声器件解决上述技术问题。
 技术解决方案
本发明的目的在于提供一种能充分利用磁力的发声器件。
为了达到上述目的，本发明提供了一种发声器件，其包括盆架、支撑于所述盆架的振动系统以及驱动所述振动系统振动发声的磁路系统，所述磁路系统具有磁间隙，所述振动系统包括插设于所述磁间隙里的音圈，所述磁路系统包括固定于所述盆架的第一磁碗、固定于所述第一磁碗的磁钢单元以及盖设于所述磁钢单元的第二磁碗；
所述第一磁碗包括支撑固定于所述盆架的第一磁碗底壁，所述磁钢单元支撑于所述第一磁碗底壁；
所述第二磁碗包括第二磁碗底壁和第二磁碗侧壁，所述第二磁碗底壁与所述第一磁碗底壁间隔正对设置，所述第二磁碗侧壁由所述第二磁碗底壁向靠近所述第一磁碗底壁方向弯折延伸，所述磁钢单元与所述第一磁碗以及所述第二磁碗侧壁共同围成所述磁间隙。
优选的，所述第二磁碗底壁固定于所述磁钢单元远离所述第一磁碗的一侧。
优选的，所述第一磁碗包括自所述第一磁碗底壁向靠近所述第二磁碗侧壁弯折延伸的第一磁碗侧壁，所述第一磁碗侧壁、所述第二磁碗侧壁与所述磁钢单元共同围成所述磁间隙。
优选的，所述磁钢单元包括沿振动方向依次叠设于所述第一磁碗底壁的第一磁钢、极芯以及第二磁钢，所述第二磁碗底壁固定于所述第二磁钢，所述极芯沿垂直振动方向的投影与所述第一磁碗侧壁以及所述第二磁碗侧壁均部分重叠。
优选的，所述极芯沿垂直振动方向的投影完全落入所述音圈内。
优选的，所述振动系统还包括固定于所述盆架的振膜、连接所述振膜与所述音圈的骨架以及固定于所述骨架上的辅助振膜；
所述振膜包括振动部、由所述振动部的周缘弯折延伸的折环部以及由所述折环部弯折延伸并固定于所述盆架的固定部；所述骨架与所述振动部连接；
所述辅助振膜的一侧固定于所述盆架，另一侧固定于所述骨架。
优选的，所述磁路系统还包括让位槽，所述让位槽贯穿所述第一磁碗和/或所述第二磁碗，并沿所述振膜的振动方向延伸；
所述骨架经所述让位槽延伸至所述磁间隙，并将所述音圈支撑悬置于所述磁间隙内。
优选的，所述盆架包括底壁、由所述底壁周缘弯折延伸的外壁以及由所述底壁弯折延伸的内壁，所述外壁环绕所述内壁设置且相互间隔，所述内壁设有贯穿其上的通口，所述通口沿所述振膜的振动方向延伸；
所述底壁与所述内壁共同围成容纳空间，所述磁路系统安装于所述容纳空间内，且使得所述让位槽与所述通口一一正对设置；
所述骨架环设于所述内壁外侧且间隔设置，所述骨架依次经所述通口和所述让位槽延伸至所述磁间隙内。
 有益效果
与相关技术相比，本发明的发声器件中，所述磁路系统包括第一磁碗、收容固定于所述第一磁碗内的磁钢单元以及盖设于所述磁钢单元的第二磁碗；所述第一磁碗包括支撑固定于所述盆架的第一磁碗底壁，所述磁钢单元支撑于所述第一磁碗底壁；所述第二磁碗包括第二磁碗底壁和第二磁碗侧壁，所述第二磁碗底壁与所述第一磁碗底壁间隔正对设置，所述第二磁碗侧壁由所述第二磁碗底壁向靠近所述第一磁碗底壁方向弯折延伸，所述磁钢单元与所述第一磁碗以及所述第二磁碗侧壁共同围成所述磁间隙。上述结构中，因所述磁钢单元收容于由所述第一磁碗和所述第二磁碗共同围成的收容空间，使得所有磁力线均被遮挡并返回至所述磁间隙，使磁力得到充分利用，从而有效提升发声器件的灵敏度。
 附图说明
为了更清楚地说明本发明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它的附图，其中：
图1为本发明发声器件的立体结构示意图；
图2为本发明发声器件的部分立体结构分解图；
图3为沿图1中A-A线的剖示图；
图4为本发明发声器件的骨架立体结构示意图；
图5为本发明发声器件的磁路系统的立体结构示意图；
图6为本发明发声器件的磁路系统的立体结构分解示意图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明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发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
请同时参阅图1-6，本发明提供了一种发声器件100，其包括盆架1、振动系统2以及具有磁间隙30的磁路系统3。所述振动系统2和所述磁路系统3分别支撑于所述盆架1，且所述磁路系统3驱动所述振动系统2振动发声。
本实施方式中，所述盆架1包括底壁11、由所述底壁11周缘弯折延伸的外壁12以及由所述底壁11弯折延伸的内壁13，所述外壁12环绕所述内壁13设置且相互间隔。
所述内壁13设有贯穿其上的通口131，所述通口131沿所述振动系统2的振动方向延伸。
所述底壁11与所述内壁13共同围成容纳空间10。
所述振动系统2包括：振膜21、骨架22、音圈23以及辅助振膜24。
所述振膜21包括振动部211、由所述振动部211的周缘弯折延伸的折环部212以及由所述折环部212弯折延伸并固定于所述盆架1的固定部213。
本实施方式中，具体的，所述固定部213用于将振膜21固定于盆架1，其包括第一固定部2131和第二固定部2132；所述第一固定部2131呈环状且固定于所述外壁12，所述第二固定部2132呈环状且固定于所述内壁13。
所述折环部212用于为振动部211振动时提高弹性支撑与振幅，其包括呈环状的第一折环部2121和呈环状的第二折环部2122。所述第一折环部2121环绕所述第二折环部2122设置且相互间隔。所述第一折环部2121远离所述第二折环部2122的一侧与所述第一固定部2131连接，所述第二折环部2122远离所述第一折环部2121的一侧与所述第二固定部2132连接。
所述振动部211用于振动时辐射声波而发声。具体的，所述振动部211呈环状，所述振动部211位于所述第一折环部2121与所述第二折环部2122之间，且所述振动部211的外侧与所述第一折环部2121连接，所述振动部211的内侧与所述第二折环部2122连接。
所述骨架22包括平板壁221和延伸壁222。
本实施方式中，所述平板壁221贴合于所述振动部211靠近所述磁路系统3的一侧，用以充当所述振膜21的球顶结构，所述延伸壁222由所述平板壁221向远离所述振膜21的方向弯折延伸，用于与音圈23连接并对音圈23形成支撑。本实施方式中，所述平板壁221呈环状。
更优的，所述振动部211设有贯穿其上的通孔2111，所述平板壁221完全覆盖所述通口2111。因所述平板壁221相较于振动部211而言为钢性材料，有利于改善发声器件100的高频声学性能，而通孔2111的设置可在一定程度上减小了所述振膜21的厚度，有效增加了振动部211的振动空间。
所述音圈23插设于所述磁间隙30内并与所述延伸壁222固定连接。所述音圈23驱动所述延伸壁222振动以带动所述平板壁221振动，从而驱动所述振动部211振动发声。
上述结构中，因骨架22的平板壁221部分充当了振膜21的顶球结构，实现辐射声波，而延伸部222用于固定音圈23，即骨架22与振膜21形成一体结构，减少了零件之间装配的配合误差，提高其声学性能，同时简化了装配工序，提高生产效率。
更优的，所述延伸壁222包括由所述平板壁221向远离所述振膜21的振动部211方向弯折延伸的第一延伸壁2221和由所述第一延伸壁2221向靠近所述磁路系统3方向弯折延伸的第二延伸壁2222。所述第二延伸壁2222抵接于所述音圈23的外侧并形成固定连接。上述结构实现骨架22的延伸壁222从音圈23外侧粘接形成对音圈23的支撑，该结构设计对于磁间隙30的控制更灵活，更便于发声器件100的整体结构的设计。
所述延伸壁222可为一整体环形结构，也可以为分体结构围成环状，本实施方式中，所述延伸壁222包括三个且相互等间距设置。
所述辅助振膜24的一侧固定于所述外壁12，另一侧固定于所述第一延伸壁2221远离所述平板壁2222的一端，用于防止所述骨架22的横向摆动，从而避免了音圈23的横向摆动，提高发声器件100的稳定性。
所述磁路系统3包括第一磁碗31、固定于所述第一磁碗31内的磁钢单元32、贯穿所述第一磁碗31并与所述第二延伸壁2222匹配的让位槽33以及盖设于所述磁钢单元32的第二磁碗34。即，所述让位槽33的形状和数量与所述第二延伸壁2222的形状和数量对应匹配。
本实施方式中，所述磁路系统3包括盖设于所述磁钢单元32的第二磁碗34，所述第二磁碗34将磁钢单元32靠近振膜21一侧的磁力线导回至磁间隙30内，使所述磁路系统3的磁力线得到充分利用，从而有效提升发声器件的灵敏度。
具体的，所述第一磁碗31包括支撑固定于所述盆架1的第一磁碗底壁311以及由所述第一磁碗底壁311向靠近所述第二磁碗34方向弯折延伸的第一磁碗侧壁312，所述磁钢单元32支撑于所述第一磁碗底壁311。
所述第二磁碗34包括第二磁碗底壁341和第二磁碗侧壁342，所述第二磁碗底壁341与所述第一磁碗底壁311间隔正对设置，所述第二磁碗侧壁342由所述第二磁碗底壁341向靠近所述第一磁碗底壁311方向弯折延伸形成的。
所述磁钢单元32包括沿振动方向依次叠设于所述第一磁碗底壁311的第一磁钢321、极芯322以及第二磁钢323，所述第二磁碗底壁341固定于所述第二磁钢323，所述极芯322沿垂直振动方向的投影与所述第一磁碗侧壁312以及所述第二磁碗侧壁342均部分重叠，所述极芯322沿垂直振动方向的投影完全落入所述音圈23内。
所述磁钢单元32与所述第一磁碗侧壁312以及所述第二磁碗侧壁342共同围成所述磁间隙30。本实施方式中，所述让位槽33沿所述振动方向延伸并贯穿所述第一磁碗侧壁312。所述第一延伸壁2221环设于所述磁路系统3外侧且间隔设置，所述第二延伸壁2222经所述让位槽33延伸至所述磁间隙30内并与音圈23连接。
在本实施方式中，所述第二磁碗底壁341与所述第一磁碗底壁311间隔正对设置，所述第二磁碗侧壁342由所述第二磁碗底壁341向靠近所述第一磁碗底壁311方向弯折延伸，所述第二磁碗侧壁342可以抵接于所述第一磁碗侧壁312，也可以与所述第一磁碗侧壁312间隔。此时，所述让位槽33亦贯穿所述第二磁碗侧壁342，为骨架22的第二延伸壁2222提高更充足的运动空间，提高可靠性。
更优的，本实施方式中，所述磁路系统3安装于所述容纳空间10内，且使得所述让位槽33与所述通口131一一正对设置。此时，所述第一延伸壁2221环设于所述内壁13外侧且间隔设置，所述第二延伸壁2222依次经所述通口131和所述让位槽33延伸至所述磁间隙30内并与所述音圈23的外侧连接。
因振膜21固定在盆架1的外壁12和内壁13，则内壁13围成的容纳空间10的上方可外露，本实施方式中，更优的，当所述磁路系统3安装于容纳空间10内后，使所述磁路系统3的顶面沿所述振动方向高于所述振动部211（具体为充当球顶的平板壁221），形成外露结构，且所述振动部211最大振幅的位置低于或平行于所述磁路系统3的顶面，即所述振膜21在水平方向上环绕包裹所述磁路系统3的顶部，从而节省了产品在振动方向的空间，有效降低了产品厚度。
与相关技术相比，本发明的发声器件中，所述磁路系统包括第一磁碗、收容固定于所述第一磁碗内的磁钢单元以及盖设于所述磁钢单元的第二磁碗；所述第一磁碗包括支撑固定于所述盆架的第一磁碗底壁，所述磁钢单元支撑于所述第一磁碗底壁；所述第二磁碗包括第二磁碗底壁和第二磁碗侧壁，所述第二磁碗底壁与所述第一磁碗底壁间隔正对设置，所述第二磁碗侧壁由所述第二磁碗底壁向靠近所述第一磁碗底壁方向弯折延伸，所述磁钢单元与所述第一磁碗以及所述第二磁碗侧壁共同围成所述磁间隙。上述结构中，因所述磁钢单元收容于由所述第一磁碗和所述第二磁碗共同围成的收容空间，使得所有磁力线均被遮挡并返回至所述磁间隙，使磁力得到充分利用，从而有效提升发声器件的灵敏度。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (8)

  1. 一种发声器件，其包括盆架、支撑于所述盆架的振动系统以及驱动所述振动系统振动发声的磁路系统，所述磁路系统具有磁间隙，所述振动系统包括插设于所述磁间隙里的音圈，其特征在于，所述磁路系统包括固定于所述盆架的第一磁碗、固定于所述第一磁碗的磁钢单元以及盖设于所述磁钢单元的第二磁碗；
    所述第一磁碗包括支撑固定于所述盆架的第一磁碗底壁，所述磁钢单元支撑于所述第一磁碗底壁；
    所述第二磁碗包括第二磁碗底壁和第二磁碗侧壁，所述第二磁碗底壁与所述第一磁碗底壁间隔正对设置，所述第二磁碗侧壁由所述第二磁碗底壁向靠近所述第一磁碗底壁方向弯折延伸，所述磁钢单元与所述第一磁碗以及所述第二磁碗侧壁共同围成所述磁间隙。
  2. 根据权利要求1所述的发声器件，其特征在于，所述第二磁碗底壁固定于所述磁钢单元远离所述第一磁碗的一侧。
  3. 根据权利要求1所述的发声器件，其特征在于，所述第一磁碗包括自所述第一磁碗底壁向靠近所述第二磁碗侧壁弯折延伸的第一磁碗侧壁，所述第一磁碗侧壁、所述第二磁碗侧壁与所述磁钢单元共同围成所述磁间隙。
  4. 根据权利要求1所述的发声器件，其特征在于，所述磁钢单元包括沿振动方向依次叠设于所述第一磁碗底壁的第一磁钢、极芯以及第二磁钢，所述第二磁碗底壁固定于所述第二磁钢，所述极芯沿垂直振动方向的投影与所述第一磁碗侧壁以及所述第二磁碗侧壁均部分重叠。
  5. 根据权利要求4所述的发声器件，其特征在于，所述极芯沿垂直振动方向的投影完全落入所述音圈内。
  6. 根据权利要求1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振膜、连接所述振膜与所述音圈的骨架以及固定于所述骨架上的辅助振膜；
    所述振膜包括振动部、由所述振动部的周缘弯折延伸的折环部以及由所述折环部弯折延伸并固定于所述盆架的固定部；所述骨架与所述振动部连接；
    所述辅助振膜的一侧固定于所述盆架，另一侧固定于所述骨架。
  7. 根据权利要求6所述的发声器件，其特征在于，所述磁路系统还包括让位槽，所述让位槽贯穿所述第一磁碗和/或所述第二磁碗，并沿所述振膜的振动方向延伸；
    所述骨架经所述让位槽延伸至所述磁间隙，并将所述音圈支撑悬置于所述磁间隙内。
  8. 根据权利要求7所述的发声器件，其特征在于，所述盆架包括底壁、由所述底壁周缘弯折延伸的外壁以及由所述底壁弯折延伸的内壁，所述外壁环绕所述内壁设置且相互间隔，所述内壁设有贯穿其上的通口，所述通口沿所述振膜的振动方向延伸；
    所述底壁与所述内壁共同围成容纳空间，所述磁路系统安装于所述容纳空间内，且使得所述让位槽与所述通口一一正对设置；
    所述骨架环设于所述内壁外侧且间隔设置，所述骨架依次经所述通口和所述让位槽延伸至所述磁间隙内。
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CN207283806U (zh) * 2017-10-18 2018-04-27 深圳精拓创新科技有限公司 扬声器

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US11516590B2 (en) * 2020-11-30 2022-11-29 Aac Microtech (Changzhou) Co., Ltd. Sounding device

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