WO2020140176A1 - Haut-parleur - Google Patents

Haut-parleur Download PDF

Info

Publication number
WO2020140176A1
WO2020140176A1 PCT/CN2018/125943 CN2018125943W WO2020140176A1 WO 2020140176 A1 WO2020140176 A1 WO 2020140176A1 CN 2018125943 W CN2018125943 W CN 2018125943W WO 2020140176 A1 WO2020140176 A1 WO 2020140176A1
Authority
WO
WIPO (PCT)
Prior art keywords
end point
connection
circuit board
clamping
flexible circuit
Prior art date
Application number
PCT/CN2018/125943
Other languages
English (en)
Chinese (zh)
Inventor
梁平
赵彬
Original Assignee
瑞声声学科技(深圳)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 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2018/125943 priority Critical patent/WO2020140176A1/fr
Publication of WO2020140176A1 publication Critical patent/WO2020140176A1/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
    • 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; 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

  • the invention belongs to the technical field of electroacoustic converters, and particularly relates to a speaker.
  • An object of the present invention is to provide a speaker, which aims to solve the problem that the lower diaphragm in the speaker in the prior art is likely to cause the folded portion of the lower diaphragm to collide with the flexible circuit board during vibration, resulting in poor pure sound of the product.
  • a speaker which includes a basin holder with a receiving space, and a vibration system, a magnetic circuit system, and a flexible circuit board accommodated in the receiving space.
  • a first clamping part, a second clamping part fixedly connected to the basin holder, and a folding part connecting the first clamping part and the second clamping part, and the flexible circuit board is interposed Between the voice coil and the first clamping portion, the folding ring portion includes a first connection portion connected to the first clamping portion and a second connection connected to the second clamping portion Part and an intermediate part connecting the first connection part and the second connection part, the first connection part includes a first end point connected to the first clamping part and a first part connected to the intermediate part
  • the first distance is 0.
  • the first connecting portion has a flat structure.
  • connection part is an arc-shaped structure.
  • the flexible circuit board includes a first fixing portion, a second fixing portion, and an elastic connection portion, the first fixing portion is connected to the basin frame, and the second fixing portion is connected to the voice coil.
  • the elastic connection portion is connected between the first fixing portion and the second fixing portion, and an orthographic projection of the elastic connection portion in the vibration direction is spaced from the first connection portion.
  • the materials of the upper diaphragm and the lower diaphragm are polymer materials.
  • the polymer material is silica gel, rubber, PEEK or TPU.
  • the invention sets the vertical distance between the tangent of the first end point on the lower diaphragm along the vibration direction and the tangent of the second end point along the vibration direction to be smaller than the tangent of the third end point along the vibration direction and the fourth end point along the vibration direction
  • the vertical distance between the tangents of the tangent line is conducive to improving the vibration space of the lower diaphragm, so that the first connection part can maintain a certain distance from the flexible circuit board during the vibration of the lower diaphragm, effectively avoiding the folding of the lower diaphragm
  • the part collides with the flexible circuit board, which can improve the pure sound of the speaker, ensure the stability of the speaker, and improve the performance of the product.
  • FIG. 1 is a schematic structural diagram of a speaker provided by an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;
  • FIG. 3 is a schematic sectional view of FIG. 1;
  • FIG. 4 is an enlarged schematic diagram of the area A in FIG. 3.
  • the speaker includes a fixing system 1 having a storage space, a vibration system 2 and a flexible circuit board 21 stored in the storage space.
  • the fixing system 1 includes a pot holder 11 having a storage space, a fixing member 15 fixedly connected to the pot holder 11, and a magnetic circuit system 10 stored in the storage space of the pot holder 11.
  • the magnetic circuit system 10 includes a magnetically conductive yoke 12 fixed to the basin frame 11, a main magnetic steel 13 provided at the middle of the magnetically conductive yoke 12, and a magnetic gap 18 disposed on both sides of the magnetically conductive yoke 12 and forming a magnetic gap 18 with the main magnetic steel 13 Vice magnet 14.
  • the vibration system 2 includes an upper diaphragm 22 fixed to the upper end of the basin frame 11, a voice coil 24 that drives the upper diaphragm 22 to vibrate and sound, a flexible circuit board 21 fixed to the lower end of the voice coil 24, and an upper diaphragm fixed to the upper end of the voice coil 24 22 and the lower diaphragm 23 fixed to the lower end of the flexible circuit board 21, the voice coil 24 is placed in the magnetic gap 18, the inner upper end of the flexible circuit board 21 is fixed to the lower end of the voice coil 24, and the outer upper end of the flexible circuit board 21 is fixed to the basin On shelf 11.
  • the lower diaphragm 23 includes a first clamping portion 233 connected to the voice coil 24, a second clamping portion 232 fixedly connected to the basin holder 11, and a fold connecting the first clamping portion 233 and the second clamping portion 232
  • the ring portion 231, the flexible circuit board 21 is interposed between the voice coil 24 and the first clamping portion 233, and the folding ring portion 231 includes a first connection portion 2311 connected to the first clamping portion 233 and a second clamping portion A second connection portion 2313 connected by 232 and an intermediate portion 2312 connecting the first connection portion 2311 and the second connection portion 2313.
  • the first connection portion 2311 includes a first end point 2314 connected to the first clamping portion 233 and a The second end 2315 connected to the middle part 2312.
  • the second connection part 2313 includes a third end 2316 connected to the second clamping part 232 and a fourth end 2317 connected to the middle part 2312.
  • the first end 2314 is along the vibration direction
  • the vertical distance between the tangent line and the tangent line of the second endpoint 2315 along the vibration direction is the first interval
  • the vertical distance between the tangent line of the third endpoint 2316 along the vibration direction and the tangent line along the vibration direction of the fourth endpoint 2317 is the second interval
  • the first pitch is smaller than the second pitch.
  • the voice coil 24 drives the upper diaphragm 22 to vibrate and sound, and drives the lower diaphragm 23 and the flexible circuit board 21 to vibrate.
  • the vibration space of the lower diaphragm 23 is improved, so that there is a larger space between the folded portion of the lower diaphragm 23 and the flexible circuit board 21, so that the lower diaphragm 23 is in the process of vibration,
  • the first connecting portion 2311 can maintain a certain distance from the flexible circuit board 21, effectively avoiding the collision of the folded portion 231 of the lower diaphragm 23 and the flexible circuit board 21, thereby improving the pure sound of the speaker and ensuring the stability of the speaker.
  • the first pitch is 0, that is, the first connecting portion 2311 and the intermediate portion 2312 form an angle of 90 degrees.
  • the first connection portion 2311 has a flat plate structure
  • the second connection portion 2313 has an arc structure.
  • the first connecting portion 2311 and the second connecting portion 2313 can also be structures of other shapes, and the angle between the middle portion 2312 and the first connecting portion 2311 can be an obtuse angle, and the specific angle is adjusted according to actual needs.
  • the structure of the diaphragm 23 is adjusted.
  • the flexible circuit board 21 includes the first fixing portion 211, the second fixing portion 212, and the elastic connecting portion 213.
  • the upper end of the first fixing portion 211 is fixedly connected to the basin 11 and the lower end of the first fixing portion 211 is
  • the second clamping portion 232 of the diaphragm 23 is fixedly connected, the upper end of the second fixing portion 212 is connected to the voice coil 24, the lower end of the second fixing portion 212 is fixedly connected to the first clamping portion 233 of the lower diaphragm 23, and is elastically connected
  • the portion 213 is connected between the first fixing portion 211 and the second fixing portion 212, and the orthographic projection of the elastic connection portion 213 in the vibration direction is spaced from the first connection portion 2311.
  • the fixing system 1 further includes a pole core 17, which is fixed to the side of the main magnetic steel 13 away from the magnetic yoke 12.
  • the magnetic yoke 12, the fixing member 15 and the pole core 17 are made of magnetically conductive material
  • the material of the upper diaphragm 22 and the lower diaphragm 23 is a polymer material
  • the polymer material is silica gel, rubber, PEEK (polyetheretherketone Polyetheretherketone) or TPU (Thermoplastic polyurethanes (thermoplastic polyurethane elastomer rubber), etc.
  • the shape of the voice coil 24 is a racetrack shape, or other ring-shaped structures may be used.
  • the voice coil 24 drives the upper diaphragm 22, the upper diaphragm 22 is fixed on the basin frame 11, and the upper diaphragm 22 is also fixed There is a reinforcing plate 16, which can be provided on the side of the upper diaphragm 22 facing the main magnetic steel 13, or on the side of the upper diaphragm 22 facing away from the main magnetic steel 13, the reinforcing plate 16 can raise the upper diaphragm 22 Stability.
  • the speaker of the present invention improves the shape and structure of the lower diaphragm 23 so that the tangent of the first endpoint 2314 on the lower diaphragm 23 along the vibration direction and the tangent of the second endpoint 1315 along the vibration direction
  • the vertical distance between them is set to be smaller than the vertical distance between the tangent of the third endpoint 2316 in the vibration direction and the tangent of the fourth endpoint 2317 in the vibration direction, which is beneficial to improve the vibration space of the lower diaphragm 23 so that the lower diaphragm 23 vibrates
  • the first connecting portion 2311 can maintain a certain distance from the flexible circuit board 21, effectively avoiding the collision of the folded portion 231 of the lower diaphragm 23 and the flexible circuit board 21, thereby improving the pure sound of the speaker and ensuring the speaker Stability, improve product performance.

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

La présente invention est applicable au domaine des transducteurs électroacoustiques. La présente invention concerne un haut-parleur. Le haut-parleur comprend un cadre, un système de vibration, un système de circuit magnétique et une carte de circuit flexible. Le système de vibration comprend une membrane supérieure, une bobine mobile et une membrane inférieure. Le diaphragme inférieur comprend une première partie de serrage, une seconde partie de serrage et une partie périphérique. La carte de circuit imprimé flexible est disposée entre la bobine acoustique et la première partie de serrage. La partie périphérique comprend une première connexion, une deuxième partie de connexion et une partie centrale. Une distance verticale entre une ligne tangente d'un premier point d'extrémité au niveau de la première partie de liaison par rapport à une direction de vibration et une ligne tangente d'un second point d'extrémité au niveau de la première partie de liaison par rapport à la direction de vibration est une première distance. Une distance verticale entre une ligne tangente d'un troisième point d'extrémité par rapport à la direction de vibration et une ligne tangente d'un quatrième point d'extrémité par rapport à la direction de vibration est une seconde distance. La première distance est inférieure à la seconde distance. La structure ci-dessus de la présente invention configure un espace de vibration de la membrane inférieure, de telle sorte que lorsque la membrane inférieure vibre, la partie périphérique de celui-ci n'entre pas en collision avec la carte de circuit imprimé flexible, ce qui permet d'améliorer la pureté du son du haut-parleur et d'améliorer les performances du produit.
PCT/CN2018/125943 2018-12-30 2018-12-30 Haut-parleur WO2020140176A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/125943 WO2020140176A1 (fr) 2018-12-30 2018-12-30 Haut-parleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/125943 WO2020140176A1 (fr) 2018-12-30 2018-12-30 Haut-parleur

Publications (1)

Publication Number Publication Date
WO2020140176A1 true WO2020140176A1 (fr) 2020-07-09

Family

ID=71406820

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/125943 WO2020140176A1 (fr) 2018-12-30 2018-12-30 Haut-parleur

Country Status (1)

Country Link
WO (1) WO2020140176A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112165676A (zh) * 2020-10-22 2021-01-01 瑞声新能源发展(常州)有限公司科教城分公司 发声单体及扬声器
WO2022082858A1 (fr) * 2020-10-22 2022-04-28 瑞声声学科技(深圳)有限公司 Unité de production de son et haut-parleur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2472905A1 (fr) * 2011-01-04 2012-07-04 Knowles Electronics Asia PTE. Ltd. Transducteur électroacoustique
CN106658309A (zh) * 2016-11-23 2017-05-10 歌尔股份有限公司 振动发声装置
CN207869350U (zh) * 2018-01-24 2018-09-14 瑞声科技(新加坡)有限公司 微型发声器件

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2472905A1 (fr) * 2011-01-04 2012-07-04 Knowles Electronics Asia PTE. Ltd. Transducteur électroacoustique
CN106658309A (zh) * 2016-11-23 2017-05-10 歌尔股份有限公司 振动发声装置
CN207869350U (zh) * 2018-01-24 2018-09-14 瑞声科技(新加坡)有限公司 微型发声器件

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112165676A (zh) * 2020-10-22 2021-01-01 瑞声新能源发展(常州)有限公司科教城分公司 发声单体及扬声器
WO2022082854A1 (fr) * 2020-10-22 2022-04-28 瑞声声学科技(深圳)有限公司 Unité de production de son et haut-parleur
WO2022082858A1 (fr) * 2020-10-22 2022-04-28 瑞声声学科技(深圳)有限公司 Unité de production de son et haut-parleur

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