WO2021000142A1 - Haut-parleur et boîtier de haut-parleur - Google Patents

Haut-parleur et boîtier de haut-parleur Download PDF

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Publication number
WO2021000142A1
WO2021000142A1 PCT/CN2019/094042 CN2019094042W WO2021000142A1 WO 2021000142 A1 WO2021000142 A1 WO 2021000142A1 CN 2019094042 W CN2019094042 W CN 2019094042W WO 2021000142 A1 WO2021000142 A1 WO 2021000142A1
Authority
WO
WIPO (PCT)
Prior art keywords
space
long side
magnetic
pole core
diaphragm
Prior art date
Application number
PCT/CN2019/094042
Other languages
English (en)
Chinese (zh)
Inventor
张古清
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.)
Filing date
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
Priority to PCT/CN2019/094042 priority Critical patent/WO2021000142A1/fr
Priority to CN201921023095.3U priority patent/CN210093520U/zh
Publication of WO2021000142A1 publication Critical patent/WO2021000142A1/fr

Links

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
    • 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

  • This application relates to the technical field of sound-to-electric conversion, and in particular to a speaker and a speaker box.
  • the speaker includes a vibration system and a magnetic circuit system.
  • the vibration system includes a first diaphragm and a voice coil.
  • the magnetic circuit system includes a secondary pole core located below the first diaphragm. The distance between the core and the voice coil is relatively close. When the first diaphragm is vibrating, the air under the first diaphragm is blocked and cannot flow smoothly, causing piano noise and affecting the auditory effect.
  • the speaker includes a vibration system and a magnetic circuit system.
  • the vibration system includes a first diaphragm and a voice coil.
  • the magnetic circuit system includes a secondary pole core located below the first diaphragm. The distance between the core and the voice coil is relatively close. When the first diaphragm is vibrating, the air under the first diaphragm is blocked and cannot flow smoothly, causing piano noise and affecting the auditory effect.
  • the purpose of the present application is to provide a speaker and a speaker box capable of allowing air to flow out smoothly under the first diaphragm.
  • the present application provides a loudspeaker, including a basin frame, a vibration system for vibrating and sounding, and a magnetic circuit system for driving the vibration system to vibrate.
  • the magnetic circuit system includes a secondary pole core and a magnetic bowl fixed to the basin frame, The magnetic bowl cooperates with the basin frame to form a receiving space, the secondary pole core separates the receiving space into an upper space and a lower space close to the vibration system, and the secondary pole core includes a space close to the receiving space.
  • the inner edge and the outer edge disposed opposite to the inner edge, the outer edge is fixed to the basin frame, the inner edge is recessed in a direction close to the outer edge and a gap is formed, and the gap connects the upper space and The lower space.
  • the number of the notches is multiple, and the multiple notches are evenly spaced.
  • the basin frame includes a top wall, a bottom wall disposed opposite to the top wall, and a side wall connecting the top wall and the bottom wall, and the side wall includes two parallel and spaced long side walls and The two short side walls are arranged at both ends of the long side wall and connected to the two long side walls, and the long side wall and the short side wall are connected end to end in sequence to form the receiving space.
  • the secondary pole core includes a long side fixed to the long side wall and a short side fixed to the short side wall, the long side and the long side wall are arranged in one-to-one correspondence, and the short side And the short side walls are arranged in one-to-one correspondence.
  • the notch is provided on the long side.
  • the magnetic circuit system further includes a magnetic bowl fixed to the basin frame and exposed outside the basin frame, a main magnet assembled in the center of the magnetic bowl, and attached to the main magnet
  • the main pole core on the surface and the auxiliary magnet ring arranged around the main magnet, the auxiliary pole core is attached to the surface of the auxiliary magnet, and the main magnet is separated from the auxiliary magnet to form a magnetic gap ,
  • the lower space includes the magnetic gap.
  • the vibration system includes a first diaphragm for vibrating and sounding, a voice coil for driving the first diaphragm to vibrate and sound under the first diaphragm, and an elastic support under the voice coil.
  • the first diaphragm is fixed to the top wall
  • the elastic support is fixed to the bottom wall
  • the voice coil is suspended in the magnetic gap.
  • the secondary pole core includes an inner edge close to the receiving space and an outer edge disposed opposite to the inner edge, and the outer edge is embedded in the basin frame. Inside, the inner edge is recessed in a direction close to the outer edge to form a gap, and the gap connects the upper space and the lower space, so that the air under the first diaphragm can flow smoothly from the gap. Outflow can effectively avoid the generation of piano noise and improve the acoustic performance of the speaker.
  • Figure 1 is a schematic diagram of an exploded structure of the speaker box provided by this application.
  • FIG. 2 is a schematic diagram of the three-dimensional structure of the speaker provided by this application.
  • FIG. 3 is a schematic diagram of an exploded structure of the speaker shown in FIG. 2;
  • Figure 4 is a front view of the secondary pole core shown in Figure 3;
  • Fig. 5 is a cross-sectional view of the speaker shown in Fig. 2 along the line IV-IV.
  • the present application provides a speaker box 200.
  • the speaker box 200 includes an upper cover 210, a lower shell 220, and a speaker 100.
  • the upper cover 210 and the lower shell 220 cooperate to form an accommodation space.
  • the speaker 100 is housed in the containing space, the upper cover 210 is provided with a sound outlet 230 communicating with the outside, and the sound generated by the speaker 100 is conducted to the outside through the sound outlet 230.
  • the speaker 100 includes a basin frame 1, a vibration system 2 and a magnetic circuit system 3.
  • the basin frame 1 has a rectangular frame structure, which includes a top wall 11, a bottom wall 12 disposed opposite to the top wall 11, and a side wall 13 connecting the top wall 11 and the bottom wall 12.
  • the wall 13 includes two long side walls 131 arranged in parallel and spaced apart and two short side walls 132 arranged at both ends of the long side walls 131 and connecting the two long side walls 131, the long side walls 131 and the The short side walls 132 are connected end to end in sequence.
  • the vibration system 2 is used for vibrating and sounding.
  • the vibration system 2 includes a first diaphragm 21 for vibrating and sounding, and is located below the first diaphragm 21 to drive the first diaphragm 21 to vibrate and sound.
  • the voice coil 22 and an elastic support 23 located below the voice coil 22 to elastically support the voice coil 22.
  • the first diaphragm 21 is fixed to the top wall 11, one end of the elastic support 23 is fixed to the bottom wall 12, and the other end elastically supports the voice coil 22. Further, the number of the elastic support members 23 is two, and the two elastic support members 23 are symmetrically arranged on opposite sides of the basin frame 1. Specifically, the elastic support members 23 are arranged on the short The side wall 132 side.
  • the elastic support 23 includes a flexible circuit board 231 and a second diaphragm 232 stacked on the flexible circuit board 231. One end of the second diaphragm 232 is fixed to the voice coil 22, and the other end is fixed to the voice coil 22.
  • the flexible circuit board 231 is used to support the voice coil 22 and is used to electrically connect the voice coil 22 to an external power source; the second diaphragm 232 is used to strengthen the vibration of the first diaphragm 21, and The polarization of the first diaphragm 21 can be prevented.
  • the magnetic circuit system 3 is used to drive the vibration system 2 to vibrate and produce sound.
  • the magnetic circuit system 3 includes a magnetic bowl 31 exposed outside the basin frame 1, a main magnet 32 assembled in the center of the magnetic bowl 31, and a surface attached to the main magnet 32
  • the main pole core 33, the sub-magnet 34 ringed around the main magnet 32, and the sub-pole core 35 attached to the surface of the sub-magnet 34.
  • the main magnet 32 and the auxiliary magnet 34 are spaced to form a magnetic gap, and the voice coil 22 is suspended in the magnetic gap.
  • the main pole core 33 and the secondary pole core 35 are made of a magnetically conductive material and play a role of magnetically conductive.
  • the magnetic bowl 31 is fixedly connected with the basin frame 1 and cooperates to form a receiving space 10,
  • the secondary pole core 35 is fixedly connected to the basin frame 1, and separates the receiving space 10 to form an upper space 20 close to the vibration system 2 and a lower space 30 close to the magnetic bowl 31.
  • the lower space 30 includes the magnetic gap.
  • the secondary pole core 35 includes two long sides 351 arranged at opposite intervals, and two short sides 352 arranged at one end of the long side 351 and connecting the two long sides 351.
  • the long side 351 and the short side 351 The sides 352 are connected end to end to form a frame structure, the long side 351 is fixedly connected to the long side wall 131, and the short side 352 is fixedly connected to the short side wall 132.
  • the long side 351 includes an inner edge 3511 close to the receiving space 10 and an outer edge 3512 disposed opposite to the inner edge 3511, and the outer edge 3512 is fixed in the basin frame 1.
  • the outer edge 3512 is embedded in the side wall 13, and the inner edge 3511 is recessed toward the outer edge 3512 to form a plurality of notches 3513.
  • the notches 3513 communicate the upper space 20 and the lower layer. In the space 30, a plurality of the notches 3513 are evenly spaced along the inner edge 3511.
  • the first diaphragm 21 vibrates up and down along the height direction of the basin frame 1, and the air in the upper space 20 can flow out from the gap 3513 to the lower space smoothly Within 30, the air under the first diaphragm 21 can flow out from the gap 3513 smoothly, which can effectively avoid the generation of piano noise and improve the acoustic performance of the speaker 100.
  • the secondary pole core includes an inner edge close to the receiving space and an outer edge disposed opposite to the inner edge, and the outer edge is embedded in the basin frame. Inside, the inner edge is recessed in a direction close to the outer edge to form a gap, and the gap connects the upper space and the lower space, so that the air under the first diaphragm can flow smoothly from the gap. Outflow can effectively avoid the generation of piano noise and improve the acoustic performance of the speaker.

Landscapes

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

Abstract

La présente invention concerne un haut-parleur, comprenant un panier, un système de vibration pour la sonorisation et un système de circuit magnétique pour entraîner la vibration du système de vibration ; le système de circuit magnétique comprend un noyau de pôle secondaire et un bol magnétique qui sont fixés au panier, et le bol magnétique et le panier sont ajustés pour former un espace de réception ; le noyau polaire secondaire sépare l'espace de réception en un espace supérieur proche du système de vibration et un espace inférieur proche du bol magnétique ; le noyau polaire secondaire comprend un bord intérieur proche de l'espace de réception et un bord extérieur disposé à l'opposé du bord intérieur, le bord externe est fixé au panier, et le bord interne est en retrait vers le bord externe pour former une encoche ; et l'encoche permet la communication entre l'espace de couche supérieure et l'espace de couche inférieure. La présente invention concerne en outre un boîtier de haut-parleur comprenant le haut-parleur décrit précédemment. Le haut-parleur de la présente invention peut permettre à l'air au-dessous d'une première membrane de s'écouler en douceur à partir de l'encoche, ce qui réduit efficacement le bruit de piano du haut-parleur.
PCT/CN2019/094042 2019-06-30 2019-06-30 Haut-parleur et boîtier de haut-parleur WO2021000142A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2019/094042 WO2021000142A1 (fr) 2019-06-30 2019-06-30 Haut-parleur et boîtier de haut-parleur
CN201921023095.3U CN210093520U (zh) 2019-06-30 2019-07-02 扬声器箱

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/094042 WO2021000142A1 (fr) 2019-06-30 2019-06-30 Haut-parleur et boîtier de haut-parleur

Publications (1)

Publication Number Publication Date
WO2021000142A1 true WO2021000142A1 (fr) 2021-01-07

Family

ID=69484475

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/094042 WO2021000142A1 (fr) 2019-06-30 2019-06-30 Haut-parleur et boîtier de haut-parleur

Country Status (2)

Country Link
CN (1) CN210093520U (fr)
WO (1) WO2021000142A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111343549B (zh) * 2020-03-05 2021-02-19 瑞声科技(新加坡)有限公司 扬声器箱

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203747990U (zh) * 2013-12-11 2014-07-30 瑞声光电科技(常州)有限公司 扬声器
CN204217119U (zh) * 2014-07-18 2015-03-18 瑞声光电科技(常州)有限公司 电声器件
CN205213039U (zh) * 2015-11-23 2016-05-04 瑞声科技(沭阳)有限公司 扬声器
US9674603B1 (en) * 2016-02-24 2017-06-06 PAL Acoustics Technology Ltd. Coaxial speaker
CN109462805A (zh) * 2018-12-29 2019-03-12 瑞声科技（南京）有限公司 扬声器
CN208798197U (zh) * 2018-08-03 2019-04-26 瑞声科技(新加坡)有限公司 扬声器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203747990U (zh) * 2013-12-11 2014-07-30 瑞声光电科技(常州)有限公司 扬声器
CN204217119U (zh) * 2014-07-18 2015-03-18 瑞声光电科技(常州)有限公司 电声器件
CN205213039U (zh) * 2015-11-23 2016-05-04 瑞声科技(沭阳)有限公司 扬声器
US9674603B1 (en) * 2016-02-24 2017-06-06 PAL Acoustics Technology Ltd. Coaxial speaker
CN208798197U (zh) * 2018-08-03 2019-04-26 瑞声科技(新加坡)有限公司 扬声器
CN109462805A (zh) * 2018-12-29 2019-03-12 瑞声科技（南京）有限公司 扬声器

Also Published As

Publication number Publication date
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