WO2020134343A1 - 扬声器 - Google Patents

扬声器 Download PDF

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Publication number
WO2020134343A1
WO2020134343A1 PCT/CN2019/110610 CN2019110610W WO2020134343A1 WO 2020134343 A1 WO2020134343 A1 WO 2020134343A1 CN 2019110610 W CN2019110610 W CN 2019110610W WO 2020134343 A1 WO2020134343 A1 WO 2020134343A1
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WO
WIPO (PCT)
Prior art keywords
magnetic steel
diaphragm
centering support
support piece
auxiliary
Prior art date
Application number
PCT/CN2019/110610
Other languages
English (en)
French (fr)
Inventor
刘晓东
张龙
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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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 WO2020134343A1 publication Critical patent/WO2020134343A1/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • 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
    • 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
    • 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • 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

Definitions

  • the utility model relates to the technical field of electroacoustic conversion, in particular to a speaker.
  • the speaker includes a magnetic circuit system and a vibration system.
  • the magnetic circuit system includes a yoke, a main magnet disposed on the yoke, and a secondary magnet disposed around the main magnet.
  • the vibration system includes a diaphragm and a drive
  • the voice coil that vibrates the diaphragm is set around the main magnet.
  • the center support piece is often fixed under the voice coil, but once the centering support piece is set, the secondary magnetic steel cannot be set at the two ends of the centering support piece near the centering support piece, resulting in magnetic
  • the magnetic field of the road system is weakened, and it can also cause uneven force on the diaphragm.
  • the purpose of the utility model is to provide a loudspeaker, which solves that after the centering support piece is provided in the speaker of the related art, the secondary magnetic steel cannot be provided at both ends of the main magnet near the centering support piece, resulting in a weakening of the magnetic field And, it will also cause the technical problem of uneven stress of the diaphragm.
  • the present invention provides a loudspeaker, which includes a basin frame, a magnetic circuit system and a vibration system, the magnetic circuit system and the vibration system are all contained in the basin frame, the magnetic circuit
  • the system includes a yoke, a main magnet, a sub magnet, a main pole core, and a sub pole core.
  • the main magnet and the sub magnet are both provided on the yoke and the sub magnet is located on the main magnet.
  • the main pole core and the auxiliary pole core are respectively attached to the main magnetic steel and the auxiliary magnetic steel, and the main magnetic steel and the auxiliary magnetic steel are spaced apart and the main
  • the gap between the magnetic steel and the auxiliary magnetic steel is a magnetic gap.
  • the vibration system includes a diaphragm, a voice coil, and a centering support piece.
  • One end of the voice coil is connected to the diaphragm, and the other end is suspended on the In the magnetic gap
  • the centering support piece is provided on opposite sides of the main magnetic steel, one end of the centering support piece is fixed to the basin frame, and the other end is fixed to the voice coil away from the diaphragm
  • the centering support piece is located between the yoke and the secondary pole core
  • the secondary magnetic steel includes first secondary magnetic steels which are located on opposite sides of the main magnetic steel, and the centering
  • the support piece and the first auxiliary magnetic steel are not overlapping at least partially in the orthographic projection on the yoke along the vibration direction of the diaphragm;
  • the auxiliary magnetic steel further includes opposite sides of the main magnetic steel and A second secondary magnetic steel directly opposite to the centering support piece, the centering support piece is provided with a first yield space corresponding to the position of the second secondary magnetic steel, and the
  • the centering support piece includes a first fixing part fixed to the voice coil, a second fixing part fixed to the basin frame, and an elasticity connecting the first fixing part and the second fixing part Part, the first yield space is provided between the first fixing part and the second fixing part.
  • the vibration system further includes an auxiliary diaphragm fixedly connected to the centering support piece, and the auxiliary diaphragm is recessed in a direction away from the centering support piece along the vibration direction of the diaphragm.
  • the auxiliary diaphragm is provided with a through hole corresponding to the position of the second secondary magnetic steel, and the second secondary magnetic steel passes through the first yield space through the through hole.
  • the number of the auxiliary diaphragms is two, and the two auxiliary diaphragms are respectively fixed on the two centering support pieces.
  • the first yield space divides the auxiliary diaphragm into two independent parts spaced apart from each other.
  • the speaker further includes a front cover disposed on a side of the basin frame close to the diaphragm, and the diaphragm is sandwiched between the front cover and the basin frame.
  • the beneficial effect of the utility model is that the speaker provided by the utility model is provided with a first yield space on the centering support piece, so that the auxiliary magnetic steel can be arranged around the main magnetic steel, so that the strength of the magnetic field can be enhanced and the vibration is guaranteed.
  • the membrane is evenly stressed, improving the BLX symmetry of the diaphragm.
  • Figure 1 is an exploded perspective view of the speaker of the present invention
  • FIG. 2 is a cross-sectional view of the speaker of the present invention.
  • the present invention provides a speaker 100, which includes a basin holder 1, a magnetic circuit system 2, a vibration system 3, and a front cover 4, the front cover 4 and the basin holder 1 cover Forming a storage space, the magnetic circuit system 2 and the vibration system 3 are both accommodated in the storage space of the basin frame 1, the magnetic circuit system 2 is used to generate a constant magnetic field, and the vibration system 3 is energized After the signal, a vibration is generated in a constant magnetic field, which makes a sound.
  • the magnetic circuit system 2 includes a yoke 21, a main magnet 22, a sub magnet 23, a main pole core 24, and a sub pole core 25.
  • the main magnet 22 and the sub magnet 23 are both disposed on the magnetic
  • On the yoke 21 and the auxiliary magnetic steel 23 is located on the peripheral side of the main magnetic steel 22, the main pole core 24 and the auxiliary pole core 25 are attached to the main magnetic steel 22 and the auxiliary magnetic steel 23, respectively
  • the main magnetic steel 22 and the auxiliary magnetic steel 23 are spaced apart and the gap between the main magnetic steel 22 and the auxiliary magnetic steel 23 is a magnetic gap 26.
  • the vibration system 3 includes a diaphragm 31, a voice coil 32, and a centering support 33. One end of the voice coil 32 is connected to the diaphragm 31, and the other end is suspended in the magnetic gap 26. The voice coil 32 drives the diaphragm 31 to vibrate and sound.
  • the centering support piece 33 is two, and is located at two ends of the main magnetic steel 22 in the longitudinal direction. As shown in FIG. 2, the centering support piece 33 is located between the secondary pole core 25 and the yoke 21. One end of the centering support piece 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 31.
  • the secondary magnetic steel 23 includes a main magnet 22 Two first secondary magnets 231 in the lateral direction and two second secondary magnets 232 in the longitudinal direction of the main magnet 22, the centering support 33 and the first secondary magnet 231
  • the orthographic projection of the vibration direction of the diaphragm 31 on the yoke 21 does not overlap at least partially, and preferably does not overlap each other.
  • the centering support piece 33 is provided with a first yield space 331 corresponding to the position of the second secondary magnetic steel 232.
  • the second secondary magnetic steel 231 passes through the first yield space 331 and is fixed to the secondary pole core 25.
  • the centering support piece 33 includes a first fixing portion 332 fixed to the voice coil 32, a second fixing portion 333 fixed to the basin frame 1, and connecting the first fixing portion 332 and the second fixing In the elastic portion 334 of the portion 333, the first yield space 331 is provided between the first fixing portion 332 and the second fixing portion 333.
  • the vibration system 3 further includes an auxiliary diaphragm 34 fixedly connected to the centering support piece 33, and the auxiliary diaphragm 34 faces a direction away from the centering support piece 33 along the vibration direction of the diaphragm 31
  • the auxiliary diaphragm 34 is provided with a through hole 341 corresponding to the position of the second secondary magnetic steel 232.
  • the second secondary magnetic steel 232 corresponds to pass through the first yield space 331 through the through hole 341, the number of the auxiliary diaphragms 341 is two, and the two auxiliary diaphragms 341 are fixed respectively ⁇ two the centering support piece 33.
  • the through hole 341 divides the auxiliary diaphragm 34 into two independent parts spaced apart from each other.
  • the first concession space 331 and the through hole 341 are oppositely arranged, and both are conserved by installing the second secondary magnetic steel 232.
  • the beneficial effect of the utility model is that the speaker provided by the utility model is provided with a first yield space on the centering support piece, so that the auxiliary magnetic steel can be arranged around the main magnetic steel, so that the strength of the magnetic field can be enhanced and the vibration is guaranteed.
  • the membrane is evenly stressed, improving the BLX symmetry of the diaphragm.

Landscapes

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

Abstract

本实用新型涉及了一种扬声器，其包括盆架、磁路系统和振动系统，所述磁路系统包括磁轭、主磁钢、副磁钢、主极芯以及副极芯，所述振动系统包括振膜、音圈以及定心支片，所述定心支片为两个，且分设于所述主磁钢长边方向的两端，所述定心支片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，所述副磁钢包括分设于所述主磁钢短边方向的两个第一副磁钢和沿所述主磁钢长边方向的两个第二副磁钢，所述定心支片对应所述第二副磁钢的位置设有第一让位空间。本实用新型的有益效果在于：本实用新型提供的扬声器通过在定心支片上设置第一让位空间，从而可以在主磁钢的四周都布置副磁钢，从而可以增强磁场强度，且保证振膜受力均匀，改善振膜的BLX对称性。

Description

扬声器 技术领域
本实用新型涉及一种电声转换技术领域，尤其涉及一种扬声器。
 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，用于播放声音的扬声器被大量应用到现在的智能移动设备之中。
 技术问题
在相关技术中，扬声器包括磁路系统和振动系统，磁路系统包括磁轭、设置于所述磁轭上的主磁钢和环绕主磁钢设置的副磁钢，振动系统包括振膜和驱动振膜振动的音圈，音圈环绕主磁钢设置。为了改善振动系统的振动性能，往往在音圈下方固设定心支片，但是，一旦设置定心支片后，主磁钢靠近定心支片的两端就无法设置副磁钢，造成磁路系统的磁场减弱，而且还会造成振膜受力不均匀。
因此，实有必须提供一种新的扬声器解决上述技术问题。
 技术解决方案
本实用新型的目的在于提供一种扬声器，其解决相关技术中的扬声器设置定心支片后，主磁钢靠近定心支片的两端就无法设置副磁钢，造成磁路系统的磁场减弱，而且还会造成振膜受力不均匀的技术问题。
为了解决上述技术问题，本实用新型提供了一种扬声器，其包括盆架、磁路系统和振动系统，所述磁路系统和所述振动系统均收容于所述盆架内，所述磁路系统包括磁轭、主磁钢、副磁钢、主极芯以及副极芯，所述主磁钢和所述副磁钢均设置于所述磁轭上且所述副磁钢位于所述主磁钢周侧，所述主极芯和所述副极芯分别贴设于所述主磁钢和所述副磁钢上，所述主磁钢与所述副磁钢间隔设置且所述主磁钢与所述副磁钢之间的间隙为磁间隙，所述振动系统包括振膜、音圈以及定心支片，所述音圈一端与所述振膜连接，另一端悬置于所述磁间隙内，所述定心支片设于所述主磁钢的相对两侧，所述定心支片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，所述定心支片位于所述磁轭与所述副极芯之间，所述副磁钢包括分设于所述主磁钢相对两侧的第一副磁钢，所述定心支片与所述第一副磁钢沿所述振膜的振动方向在所述磁轭上的正投影至少部分不重叠；所述副磁钢还包括设置在所述主磁钢相对两侧且与所述定心支片正对的第二副磁钢，所述定心支片对应所述第二副磁钢的位置设有第一让位空间，所述第二副磁钢穿过所述第一让位空间并与所述副极芯固定。
优选的，所述定心支片包括固定于所述音圈的第一固定部、固定于所述盆架的第二固定部以及连接所述第一固定部和所述第二固定部的弹性部，所述第一让位空间设置于所述第一固定部与所述第二固定部之间。
优选的，所述振动系统还包括与所述定心支片固定连接的辅助振膜，所述辅助振膜朝沿所述振膜的振动方向朝远离所述定心支片的方向凹陷，所述辅助振膜对应所述第二副磁钢的位置开设有通孔，所述第二副磁钢对应经所述通孔穿过所述第一让位空间。
优选的，所述辅助振膜的数量为两个，且两个所述辅助振膜分别固设于两个所述定心支片。
优选的，所述第一让位空间将所述辅助振膜分割为两个相互间隔的独立部分。
优选的，所述扬声器还包括盖设在所述盆架靠近所述振膜一侧的前盖，所述振膜夹设在所述前盖与所述盆架之间。
 有益效果
本实用新型的有益效果在于：本实用新型提供的扬声器通过在定心支片上设置第一让位空间，从而可以在主磁钢的四周都布置副磁钢，从而可以增强磁场强度，且保证振膜受力均匀，改善振膜的BLX对称性。
 附图说明
图1是本实用新型扬声器的立体分解图；
图2是本实用新型扬声器的剖视图。
 本发明的实施方式
下面结合附图和实施方式对本实用新型作进一步详细描述。以下实施例用于说明本实用新型，但不用来限制本实用新型的范围。
请参阅图1和2所示，本实用新型提供了一种扬声器100，其包括盆架1、磁路系统2、振动系统3以及前盖4，所述前盖4与所述盆架1盖接形成收容空间，所述磁路系统2和所述振动系统3均收容于所述盆架1的所述收容空间内，所述磁路系统2用于产生恒定磁场，所述振动系统3通电信号后在恒定磁场内产生振动，从而发出声音。
所述磁路系统2包括磁轭21、主磁钢22、副磁钢23、主极芯24以及副极芯25，所述主磁钢22和所述副磁钢23均设置于所述磁轭21上且所述副磁钢23位于所述主磁钢22周侧，所述主极芯24和所述副极芯25分别贴设于所述主磁钢22和所述副磁钢23上，所述主磁钢22与所述副磁钢23间隔设置且所述主磁钢22与所述副磁钢23之间的间隙为磁间隙26。
所述振动系统3包括振膜31、音圈32以及定心支片33，所述音圈32一端与所述振膜31连接，另一端悬置于所述磁间隙26内，所述音圈32驱动所述振膜31振动发声。
所述定心支片33为两个，且分设于所述主磁钢22长边方向的两端，如图2所示，定心支片33位于副极芯25与磁轭21之间，所述定心支片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31的一端，所述副磁钢23包括分设于所述主磁钢22短边方向的两个第一副磁钢231和沿所述主磁钢22长边方向的两个第二副磁钢232，所述定心支片33与所述第一副磁钢231沿所述振膜31的振动方向在所述磁轭21上的正投影至少部分不重叠，优选为互不重叠。所述定心支片33对应所述第二副磁钢232的位置设有第一让位空间331。所述第二副磁钢231穿过所述第一让位空间331并与所述副极芯25固定。
所述定心支片33包括固定于所述音圈32的第一固定部332、固定于所述盆架1的第二固定部333以及连接所述第一固定部332和所述第二固定部333的弹性部334，所述第一让位空间331设置于所述第一固定部332与所述第二固定部333之间。
所述振动系统3还包括与所述定心支片33固定连接的辅助振膜34，所述辅助振膜34朝沿所述振膜31的振动方向朝远离所述定心支片33的方向凹陷，所述辅助振膜34对应所述第二副磁钢232的位置设有通孔341。所述第二副磁钢232对应经所述通孔341穿过所述第一让位空间331，所述辅助振膜341的数量为两个，且两个所述辅助振膜341分别固设于两个所述定心支片33。在本实用新型的具体实施方式中，所述通孔341将所述辅助振膜34分割为两个相互间隔的独立部分。
所述第一让位空间331和所述通孔341相对设置，且均为安装所述第二副磁钢232让位。
本实用新型的有益效果在于：本实用新型提供的扬声器通过在定心支片上设置第一让位空间，从而可以在主磁钢的四周都布置副磁钢，从而可以增强磁场强度，且保证振膜受力均匀，改善振膜的BLX对称性。
以上所述的仅是本实用新型的较佳实施方式，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 (6)

  1. 一种扬声器，其包括盆架、磁路系统和振动系统，所述磁路系统和所述振动系统均收容于所述盆架内，所述磁路系统包括磁轭、主磁钢、副磁钢、主极芯以及副极芯，所述主磁钢和所述副磁钢均设置于所述磁轭上且所述副磁钢位于所述主磁钢周侧，所述主极芯和所述副极芯分别贴设于所述主磁钢和所述副磁钢上，所述主磁钢与所述副磁钢间隔设置且所述主磁钢与所述副磁钢之间的间隙为磁间隙，所述振动系统包括振膜、音圈以及定心支片，所述音圈一端与所述振膜连接，另一端悬置于所述磁间隙内，所述定心支片设于所述主磁钢的相对两侧，所述定心支片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，所述定心支片位于所述磁轭与所述副极芯之间，其特征在于，所述副磁钢包括分设于所述主磁钢相对两侧的第一副磁钢，所述定心支片与所述第一副磁钢沿所述振膜的振动方向在所述磁轭上的正投影至少部分不重叠；所述副磁钢还包括设置在所述主磁钢相对两侧且与所述定心支片正对的第二副磁钢，所述定心支片对应所述第二副磁钢的位置设有第一让位空间，所述第二副磁钢穿过所述第一让位空间并与所述副极芯固定。
  2. 根据权利要求1所述的扬声器，其特征在于，所述定心支片包括固定于所述音圈的第一固定部、固定于所述盆架的第二固定部以及连接所述第一固定部和所述第二固定部的弹性部，所述第一让位空间设置于所述第一固定部与所述第二固定部之间。
  3. 根据权利要求1或2所述的扬声器，其特征在于，所述振动系统还包括与所述定心支片固定连接的辅助振膜，所述辅助振膜朝沿所述振膜的振动方向朝远离所述定心支片的方向凹陷，所述辅助振膜对应所述第二副磁钢的位置开设有通孔，所述第二副磁钢对应经所述通孔穿过所述第一让位空间。
  4. 根据权利要求3所述的扬声器，其特征在于，所述辅助振膜的数量为两个，且两个所述辅助振膜分别固设于两个所述定心支片。
  5. 根据权利要求3所述的扬声器，其特征在于，所述第一让位空间将所述辅助振膜分割为两个相互间隔的独立部分。
  6. 根据权利要求1所述的扬声器，其特征在于，所述扬声器还包括盖设在所述盆架靠近所述振膜一侧的前盖，所述振膜夹设在所述前盖与所述盆架之间。
PCT/CN2019/110610 2018-12-29 2019-10-11 扬声器 WO2020134343A1 (zh)

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