WO2020140165A1 - Corps unique de haut-parleur - Google Patents

Corps unique de haut-parleur Download PDF

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Publication number
WO2020140165A1
WO2020140165A1 PCT/CN2018/125925 CN2018125925W WO2020140165A1 WO 2020140165 A1 WO2020140165 A1 WO 2020140165A1 CN 2018125925 W CN2018125925 W CN 2018125925W WO 2020140165 A1 WO2020140165 A1 WO 2020140165A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
side wall
clamp plate
speaker unit
magnetic circuit
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/CN2018/125925
Other languages
English (en)
Chinese (zh)
Inventor
廖焕彬
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
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 AAC Acoustic Technologies Shenzhen Co Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Priority to PCT/CN2018/125925 priority Critical patent/WO2020140165A1/fr
Publication of WO2020140165A1 publication Critical patent/WO2020140165A1/fr
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
    • 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details

Definitions

  • the invention relates to the technical field of electroacoustic conversion, in particular to a speaker unit in the field of electroacoustic conversion.
  • An object of the present invention is to provide a speaker unit that can solve the problem of improving the sensitivity of the entire speaker unit.
  • a speaker unit includes a basin holder with a storage space, a magnetic circuit system and a vibration system accommodated in the basin holder, the magnetic circuit system includes a lower clamp plate and is attached to the The magnet part of the lower splint, the vibration system includes an upper diaphragm fixed to the basin frame, a voice coil fixed to the side of the upper diaphragm facing the magnetic circuit system, and a voice coil connected to the voice coil and fixed to
  • the lower splint includes a first side oppositely disposed and a second side opposite to the first side and oppositely disposed, the lower splint includes a side along the first side A notch formed by being recessed into the middle region, the lower splint includes a first side wall extending from the edge of the notch toward the lower diaphragm, and the lower diaphragm is provided to avoid the passage of the first side wall mouth.
  • the lower splint includes a second side wall that extends from the first side toward the upper diaphragm, and the second side wall is spaced apart from the first side wall.
  • the magnet portion includes a first magnet portion provided at a central position of the lower splint and second magnet portions provided on both sides of the first magnet portion.
  • the second magnet portion extends along the Set on the second side.
  • the first magnet portion includes a first side surface parallel to the first side, and a distance between the first side wall and the first side surface is smaller than that of the second side wall and the The spacing of the first side.
  • the notch is located in the middle of the first side.
  • it further includes a flexible circuit board located under the lower diaphragm.
  • the beneficial effect of the present invention is that the speaker monomer of the present invention adopts a shaped lower plate to cooperate with the lower diaphragm structure provided with an opening, so that it can not only ensure the suppression effect of the lower diaphragm on swing, but also can improve the short axis of the speaker monomer
  • the strength of the magnetic field which in turn enhances the overall sensitivity of the speaker unit, is conducive to the development of thinner speaker units.
  • FIG. 1 is an exploded schematic view of the speaker unit of the present invention
  • FIG. 2 is a schematic diagram of the assembly structure of the speaker unit of the present invention.
  • FIG. 3 is a schematic cross-sectional view of the speaker unit shown in FIG. 2 taken along line A-A;
  • FIG. 4 is a schematic cross-sectional view of the speaker unit shown in FIG. 2 along line B-B;
  • FIG. 5 is a schematic structural view of the lower splint, the lower diaphragm, and the first magnet part in FIG. 1.
  • a speaker unit 100 includes a basin holder 1 with a storage space 1, a magnetic circuit system 2 housed in the basin holder 1, and vibration System 3;
  • the magnetic circuit system 2 includes a lower clamp 5 and a main magnet 21 and a secondary magnet 23 attached to the lower clamp 5, the number of the secondary magnets 23 is two, and two secondary magnets 23 Located on opposite sides of the main magnet 21; a first magnetic gap is formed between the main magnet 21 and the auxiliary magnet 23;
  • the magnetic circuit system 2 further includes a main pole core 22 disposed on the main magnet 21, and The secondary pole core 24 is arranged around the primary pole core 22, and the secondary pole core 24 is fixed on the pot holder 1.
  • the vibration system 3 includes an upper diaphragm 31 fixed to the top of the basin frame 1, a lower diaphragm 34, and a voice coil inserted into the first magnetic gap and driving the upper diaphragm 31 and the lower diaphragm 34 to vibrate 33, and the flexible circuit board 4 located below the lower diaphragm 34, the upper diaphragm 31 and the lower diaphragm 34 are fixedly connected to the top and bottom ends of the voice coil 33 to vibrate with the voice coil 33, the flexible circuit The board 4 is electrically connected to the voice coil 33.
  • the upper diaphragm 31 is also covered with a dome 32.
  • the voice coil 33 has a frame structure, and in this embodiment is a frame structure with a rectangular cross section, including two longitudinal sides/long sides and two lateral sides/short sides; as shown in FIG. 5, the main magnetic steel 21 It is preferably a rectangular parallelepiped structure including a pair of longitudinal side walls/long side walls and a pair of lateral side walls/short side walls in the circumferential direction.
  • the two longitudinal sides of the voice coil 33 are respectively located in two first magnetic gaps formed between the longitudinal side wall of the main magnet 21 and the two pair of magnets 23.
  • the main magnetic steel 21 and the auxiliary magnetic steel 23 are polarized in the axial direction, and the polarization directions are opposite.
  • the secondary pole core 24, the secondary magnetic steel 23, and the lower clamping plate 5 return to the main magnetic steel 21.
  • the main magnetic steel 21 and the auxiliary magnetic steel 23 are made of permanent magnetic material
  • the main pole core 22, the auxiliary pole core 24 and the lower clamping plate 5 are made of magnetic conductive material such as carbon steel.
  • the lower diaphragm 34 can serve as a “sway suppression unit” to suppress the swing of the speaker itself. Due to the presence of the lower diaphragm 34 in the “sway suppression unit”, the original five-magnetic-circuit speaker can only be designed as a three-magnetic circuit at most, so that the overall magnetic field strength (full-band sensitivity) of the speaker will be reduced; The main reason is the short-axis borderless magnetism, and the gap between the lower clamping plate 5 and the voice coil 33 is large, resulting in a small contribution of the magnetic field strength at the short axis of the voice coil 33, so that the sensitivity of the speaker is not very high.
  • the lower splint 5 has a flat plate shape and includes a bottom plate 51 and a first side wall 52 extending upward from one side of the bottom plate 51.
  • the lower diaphragm 34 is provided with a through hole 35 corresponding to the first side wall 52.
  • the first side wall 52 passes through the through hole 35 and forms a second magnetic gap between the short side wall of the main magnetic steel 21, and the voice coil
  • the two short sides of 33 are respectively located in the two second magnetic gaps, so that the short sides of the voice coil 33 can be subjected to a relatively strong magnetic field.
  • the width of the first side wall 52 should be slightly smaller than the length of the opening 35; this can effectively use the space therein.
  • the plane of the top of the first side wall 52 is higher than the plane of the top of the main magnet 21, that is, the height of the first side wall 52 in the vertical direction Not lower than the height of the main magnet 21.
  • the plane of the top of the first side wall 52 is flush with the top surface of the main pole core 22, so that the magnetic field generated by the main magnetic steel 21 can be effectively guided through the short side of the voice coil 33.
  • the lower splint 5 includes a second side wall 53 extending from the first side toward the upper diaphragm 31, and the second side wall 53 is spaced apart from the first side wall 52 .
  • the magnet portion includes a main magnet 21 provided at the center of the lower splint 5 and auxiliary magnets 23 provided on both sides of the main magnet 21, the auxiliary magnets 23 are provided along the second side .
  • the main magnetic steel 21 includes a first side parallel to the first side, and a distance between the first side wall 52 and the first side is smaller than that between the second side wall 53 and the first side spacing. The notch is in the middle of the first side.
  • the beneficial effect of the present invention is that the speaker unit 100 of the present invention adopts the shaped lower splint 5 to cooperate with the structure of the lower diaphragm 34 provided with a through hole, so that it can not only ensure the suppression effect of the lower diaphragm 34 on swing, but also can improve
  • the magnetic field strength of the short axis of the speaker unit 100, thereby enhancing the overall sensitivity of the speaker unit 100, is beneficial to the development of the speaker unit 100 to be thin.

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

L'invention concerne un corps unique de haut-parleur, comprenant un panier ayant un espace de réception, et un système de circuit magnétique et un système de vibration logé dans le panier. Le système de circuit magnétique comprend une plaque de serrage inférieure, et une partie d'aimant fixée à la plaque de serrage inférieure. Le système de vibration comprend un diaphragme supérieur fixé sur le panier, une bobine acoustique fixée sur un côté, faisant face au système de circuit magnétique, du diaphragme supérieur, et un diaphragme inférieur relié à la bobine acoustique et fixé sur le panier. La plaque de serrage inférieure comprend des premiers bords latéraux disposés de manière opposée, et des seconds bords latéraux reliés aux premiers bords latéraux et agencés de façon opposée ; la plaque de serrage inférieure comprend des parties d'encoche formées en étant en retrait vers la zone centrale le long des premiers bords latéraux ; et la plaque de serrage inférieure comprend des premières parois latérales se courbant et s'étendant vers le diaphragme inférieur à partir des bords des parties d'encoche, le diaphragme inférieur étant pourvu d'ouvertures traversantes évitant les premières parois latérales. Selon le corps unique de haut-parleur de la présente invention, la plaque de serrage inférieure soumise à un traitement de forme spéciale coopère avec la structure de diaphragme inférieur avec des ouvertures, de telle sorte que l'effet d'inhibition du diaphragme inférieur sur le balancement peut être garanti, et également l'intensité de champ magnétique d'un axe mineur du corps unique de haut-parleur peut être améliorée.
PCT/CN2018/125925 2018-12-30 2018-12-30 Corps unique de haut-parleur Ceased WO2020140165A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/125925 WO2020140165A1 (fr) 2018-12-30 2018-12-30 Corps unique de haut-parleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/125925 WO2020140165A1 (fr) 2018-12-30 2018-12-30 Corps unique de haut-parleur

Publications (1)

Publication Number Publication Date
WO2020140165A1 true WO2020140165A1 (fr) 2020-07-09

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PCT/CN2018/125925 Ceased WO2020140165A1 (fr) 2018-12-30 2018-12-30 Corps unique de haut-parleur

Country Status (1)

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WO (1) WO2020140165A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023002139A1 (fr) 2021-07-22 2023-01-26 Centre National De La Recherche Scientifique Pseudo-substrat epitaxie piezoelectrique, utilisation et procede de preparation d'un tel pseudo-substrat
WO2024018032A1 (fr) 2022-07-21 2024-01-25 Centre National De La Recherche Scientifique Microsysteme electromecanique sous forme de membrane resonante piezoelectrique a base d'une couche de quartz-alpha et procede de fabrication

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170134848A1 (en) * 2014-06-30 2017-05-11 Goertek Inc. Speaker module
CN206908833U (zh) * 2017-05-24 2018-01-19 歌尔科技有限公司 微型发声器
CN207835793U (zh) * 2017-12-25 2018-09-07 歌尔科技有限公司 一种双振膜扬声器
CN207968886U (zh) * 2018-01-30 2018-10-12 瑞声科技(新加坡)有限公司 发声器件
CN208190901U (zh) * 2018-01-30 2018-12-04 瑞声科技(新加坡)有限公司 发声器件

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170134848A1 (en) * 2014-06-30 2017-05-11 Goertek Inc. Speaker module
CN206908833U (zh) * 2017-05-24 2018-01-19 歌尔科技有限公司 微型发声器
CN207835793U (zh) * 2017-12-25 2018-09-07 歌尔科技有限公司 一种双振膜扬声器
CN207968886U (zh) * 2018-01-30 2018-10-12 瑞声科技(新加坡)有限公司 发声器件
CN208190901U (zh) * 2018-01-30 2018-12-04 瑞声科技(新加坡)有限公司 发声器件

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023002139A1 (fr) 2021-07-22 2023-01-26 Centre National De La Recherche Scientifique Pseudo-substrat epitaxie piezoelectrique, utilisation et procede de preparation d'un tel pseudo-substrat
WO2024018032A1 (fr) 2022-07-21 2024-01-25 Centre National De La Recherche Scientifique Microsysteme electromecanique sous forme de membrane resonante piezoelectrique a base d'une couche de quartz-alpha et procede de fabrication

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