WO2022006930A1 - Haut-parleur - Google Patents

Haut-parleur Download PDF

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Publication number
WO2022006930A1
WO2022006930A1 PCT/CN2020/102052 CN2020102052W WO2022006930A1 WO 2022006930 A1 WO2022006930 A1 WO 2022006930A1 CN 2020102052 W CN2020102052 W CN 2020102052W WO 2022006930 A1 WO2022006930 A1 WO 2022006930A1
Authority
WO
WIPO (PCT)
Prior art keywords
arm
flexible circuit
fixed
frame
basin frame
Prior art date
Application number
PCT/CN2020/102052
Other languages
English (en)
Chinese (zh)
Inventor
冯国袖
吴树文
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
Publication of WO2022006930A1 publication Critical patent/WO2022006930A1/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 present application relates to the field of sound-to-electricity conversion, and in particular to a loudspeaker.
  • the loudspeaker will provide a uniform magnetic field through the magnetic steel, so that the voice coil with alternating current vibrates in the uniform magnetic field, the voice coil drives the skeleton, and then drives the diaphragm to vibrate to make the loudspeaker produce sound.
  • a loudspeaker in the prior art, includes a basin frame, a vibration system fixed on the basin frame, and a magnetic circuit system.
  • the vibration system includes a diaphragm fixed on the basin frame, a voice coil that drives the diaphragm to produce sound, and an electrical connection.
  • the voice coil is connected to a flexible circuit board for external electrical signals.
  • the flexible circuit board is provided with a single pad connected with an external electrical signal
  • the diaphragm includes a folded ring
  • the folded ring is provided with a fixing portion extending to the outer periphery, and the fixing portion is arranged corresponding to the single pad.
  • There is a support part and the support part is arranged close to the inner side surface of the basin frame.
  • the underside of the single pad is all injection-molded silicone.
  • the FPC of the BOX and the single FPC are welded together, there is no support under the single pad, which is prone to soldering problems, resulting in open circuit of the finished product.
  • the silicone under the body pad is also prone to burns.
  • the purpose of the present application is to provide a loudspeaker to solve the above problems.
  • a loudspeaker comprising a basin frame, a vibration system and a magnetic circuit system fixed on the basin frame, the vibration system including an upper diaphragm fixed on the basin frame, driving the upper vibration A voice coil that emits sound from a membrane and a flexible circuit board that electrically connects the voice coil and external electrical signals
  • the flexible circuit board includes a first fixing arm fixed to the end of the basin frame away from the upper diaphragm, the first fixing arm The side of the fixed arm away from the voice coil is provided with a first pad
  • the upper diaphragm includes a dome located in the middle position and a fold ring surrounding the dome
  • the fold ring includes a fixed ring with the basin frame a fixing part
  • the upper diaphragm includes a first supporting part and a second supporting part extending from the surface of the fixing part facing the basin frame to the flexible circuit board and spaced apart from each other
  • the basin frame includes a first supporting part and a second supporting part facing the The inner side of
  • the first support portion and the second support portion form a support structure
  • the pot frame is in the shape of a rectangular ring
  • the pot frame includes two oppositely arranged long-axis sides and two short-axis sides connecting the two long-axis sides
  • the shaft side, the connection between the long shaft side and the short shaft side forms a circular arc portion, and the circular arc portion is installed in the support structure.
  • the fixing portion includes a first fixing portion extending horizontally outward from the folding ring and a second fixing portion being bent and extending from the first fixing portion toward the flexible circuit board.
  • the first support portion is extended from the first fixing portion
  • the second support portion is extended from the second fixing portion
  • the flexible circuit board further includes a second fixing arm spaced from the first fixing arm and an elastic arm connecting the first fixing arm and the second fixing arm, and the elastic arm includes the same structure.
  • the elastic arm includes a first U-shaped arm and a second U-shaped arm connecting the first fixed arm and the second fixed arm.
  • the first pads include two, and the two first pads are respectively located at opposite ends of the long axis of the first fixed arm.
  • the second fixing arm includes a main body and a second pad that is bent and extended from the longitudinal ends of the main body toward the skeleton.
  • the voice coil is in the shape of a rectangular ring, the voice coil includes two oppositely arranged long axis sides and two short axis sides connecting the two long axis sides, the flexible circuit board is provided with two, two The flexible circuit boards are respectively arranged on the two short axis sides.
  • the magnetic circuit system includes a secondary magnetic steel assembly fixedly connected to the basin frame and provided with a second opening in the middle, a main magnetic steel located in the second opening, and a pole core attached to the upper surface of the main magnetic steel, so A magnetic gap is formed between the main magnetic steel and the auxiliary magnetic steel assembly, and the voice coil is at least partially arranged in the magnetic gap.
  • the vibration system further includes a frame fixed to the flexible circuit board and supporting the upper diaphragm and a lower diaphragm located under the flexible circuit board.
  • a speaker which includes a basin frame, a vibration system and a magnetic circuit system fixed on the basin frame
  • the vibration system includes an upper diaphragm fixed on the basin frame, which drives the A voice coil for the upper diaphragm to emit sound and a flexible circuit board for electrically connecting the voice coil and external electrical signals
  • the flexible circuit board includes a first fixing arm fixed to the end of the basin frame away from the upper diaphragm
  • the The side of the first fixed arm away from the voice coil is provided with a first pad
  • the upper diaphragm includes a dome located in the middle position and a fold ring surrounding the dome
  • the fold ring includes and the basin frame A fixed fixing portion
  • the upper diaphragm includes a first support portion and a second support portion that extend from the surface of the fixing portion toward the basin frame to the flexible circuit board and are spaced apart from each other
  • the basin frame includes Facing the inner side of the voice coil and the outer side opposite to the inner side, the first
  • the arc part of the basin frame can support the first pad, which is beneficial to the silicone injection molding of the first and second supporting parts, and avoids the scalding of the silicone and the open circuit problem.
  • FIG. 1 is a schematic diagram of a three-dimensional assembly of a speaker of the application
  • Fig. 2 is the structural representation that separates the whole after combining the upper diaphragm and the skeleton in Fig. 1;
  • FIG. 3 is a schematic exploded view of the structure of the speaker of the application.
  • FIG. 5 is a schematic structural diagram of the combination of the upper diaphragm and the skeleton in the application;
  • FIG. 6 is a schematic three-dimensional cross-sectional view taken along line A-A of FIG. 1 .
  • the present application provides a speaker 100 , which includes a basin frame 20 , a vibration system 30 fixed to the basin frame 20 , and a magnetic circuit system 40 .
  • the magnetic circuit system 40 is used to drive the vibration system 30 to vibrate and sound.
  • the basin frame 20 is a hollow rectangle as a whole.
  • the basin frame 20 includes two oppositely arranged long-axis sides and two short-axis sides connecting the two long-axis sides. The connection between the long-axis sides and the short-axis sides is formed. Arc portion 21 .
  • the vibration system 30 includes an upper diaphragm 31 fixed to the basin frame 20 , a voice coil 32 located below the upper diaphragm 31 to drive the upper diaphragm 31 to emit sound, and electrically connecting the voice coil 32 to an external electrical device.
  • the flexible circuit board 33 for signals, the frame 34 fixed on the flexible circuit board 33 and supporting the upper diaphragm 31 , and the lower diaphragm 35 disposed under the flexible circuit board 33 and connected to the flexible circuit board 33 .
  • the flexible circuit board 33 includes two and is located on opposite sides of the short axis of the basin frame 20 respectively, and includes a first fixing arm 331 fixed to one end of the basin frame 20 away from the upper diaphragm 31 , A second fixed arm 332 spaced from the first fixed arm 331 and an elastic arm 333 connected to the first fixed arm 331 and the second fixed arm 332 .
  • the first fixed arm 331 is provided with a first pad 3311 connected to an external electrical signal, and the first pad 3311 is located at a distance of the first fixed arm 331 away from the voice coil At one end of 32 , the projection of the first pad 3311 along the vibration direction at least partially overlaps the projection of the basin frame 20 along the vibration direction.
  • the first pads 3311 include two, and the two first pads 3311 are respectively located at opposite ends of the long axis of the first fixing arm 331 .
  • the second fixing arm 332 includes a main body portion 3321 , a bending portion 3322 that is bent and extended from the longitudinal ends of the main body portion 3321 toward the frame 34 , and a bending portion 3322 disposed at the end of the bending portion 3322 and connected to the frame 34 .
  • the elastic arms 333 include a pair of identical structures and mirror images of each other, and the elastic arms 333 include a first U-shaped arm 3331 and a second U-shaped arm that connect the first fixed arm 331 and the second fixed arm 332 . 3332.
  • the flexible circuit board 33 has a symmetrical structure, and its middle line is a line of symmetry.
  • the upper diaphragm 31 includes a dome 311 located in the middle and a folding ring 312 surrounding the dome 311 .
  • the folding ring 312 includes a fixing portion 3121 that is fixed to the basin frame 20 , and the upper diaphragm 31 further includes a surface extending from the fixing portion 3121 toward the basin frame 20 toward the flexible circuit board 33 and mutually
  • the first support portion 313 and the second support portion 314 are spaced apart.
  • the basin frame 20 includes an inner side surface facing the voice coil 32 and an outer side surface opposite to the inner side surface.
  • the first support portion 313 is attached to the inner side.
  • the second support portion 314 is arranged to fit the inner side surface, and the second support portion 314 is arranged to fit the outer side surface.
  • the projection of the first pad 3311 along the vibration direction at least partially overlaps the projection of the basin frame 20 along the vibration direction.
  • the first support portion 313 and the second support portion 314 form a support structure
  • the circular arc portion 21 of the basin frame 20 is installed in the support structure, that is, clamped by the first support portion 313 and the second support portion 314 .
  • the circular arc portion 21 of the basin frame 20 can support the first pad 3311, which is beneficial for the first and second supporting parts 313 and 314. Silicone injection molding to avoid silicone burns and open circuit problems.
  • the fixing portion 3121 includes a first fixing portion 31211 extending horizontally outward from the folding ring 312 and a second fixing portion 31212 being bent and extending from the first fixing portion 31211 toward the flexible circuit board 33, so as to further increase the 20 contact area with the pot holder.
  • the first support portion 313 is extended from the first fixing portion 31211
  • the second support portion 314 is extended from the second fixing portion 31212 .
  • the voice coil 32 is in the shape of a rectangular ring, and the voice coil 32 includes two oppositely disposed long-axis sides and two short-axis sides connecting the two long-axis sides.
  • the frame 34 includes a support table 342 with a first opening 341 and a side wall 343 extending from the end of the support table 342 toward the flexible circuit board 33 .
  • the side walls 343 include two corresponding to the flexible circuit board 33 .
  • the main body 3321 of the second fixing arm 332 is fixed to the side wall 343 of the frame 34 , the bent portion 3322 of the second fixing arm 332 extends toward the support base 342 of the frame 34 , and the second welding
  • the disk 3323 is connected to the support table 342 of the frame 34 . Further, the dome 311 is pressed against the upper edge of the first opening 341 of the support table 342 , and the voice coil 32 is pressed against the lower periphery of the first opening 341 of the support table 342 .
  • the magnetic circuit system 40 includes a secondary magnetic steel assembly 41 fixedly connected to the basin frame 20 and provided with a second opening 411 in the middle, a main magnetic steel 42 located in the second opening 411 , and a main magnetic steel 42 attached to the upper surface of the main magnetic steel 42 .
  • a magnetic gap is formed between the main magnetic steel 42 and the secondary magnetic steel assembly 41, and the voice coil 32 is at least partially disposed in the magnetic gap.
  • the secondary magnetic steel components 41 can be integrally formed to surround the main magnetic steel 42
  • the main magnetic steel 42 can be surrounded by four groups of secondary magnetic steel components 41 at intervals, or the main magnetic steel components 41 can be surrounded by two groups of secondary magnetic steel components 41 at intervals.
  • Magnet assembly 42 In this embodiment, the secondary magnet steel assembly 41 is set as two upper and lower secondary magnet steel assemblies 41 .

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 concerne un haut-parleur, comprenant un cadre, et un système de vibration et un système de circuit magnétique qui sont fixés sur le cadre. Le système de vibration comprend une membrane supérieure, une bobine acoustique entraînant la membrane supérieure pour produire un son, et une carte de circuit flexible connectant électriquement la bobine acoustique à des signaux électriques externes. La carte de circuit flexible comprend un premier bras fixe avec un premier plot de liaison. La membrane supérieure est pourvue d'un anneau ondulé. L'anneau ondulé comprend une partie fixe fixée au cadre. La membrane supérieure comprend une première partie de support et une seconde partie de support qui s'étendent de la partie fixe vers la surface du cadre jusqu'à la carte de circuit flexible et sont disposées à l'écart l'une de l'autre. Le cadre comprend une surface latérale intérieure faisant face à la bobine acoustique et une surface latérale extérieure opposée à la surface latérale intérieure. La première partie de support est fixée à la surface latérale intérieure. La seconde partie de support est fixée à la surface latérale externe. La projection de la première plage de liaison dans la direction de vibration et la projection du cadre dans la direction de vibration se chevauchent au moins partiellement. En améliorant la structure de la position de contact de la membrane supérieure et du cadre, le moulage par injection de gel de silice de la première partie de support et de la deuxième partie de support est facilité, et les problèmes d'échaudage du gel de silice et de rupture de circuit sont évités.
PCT/CN2020/102052 2020-07-06 2020-07-15 Haut-parleur WO2022006930A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021310397.1U CN213073069U (zh) 2020-07-06 2020-07-06 扬声器
CN202021310397.1 2020-07-06

Publications (1)

Publication Number Publication Date
WO2022006930A1 true WO2022006930A1 (fr) 2022-01-13

Family

ID=75571256

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/102052 WO2022006930A1 (fr) 2020-07-06 2020-07-15 Haut-parleur

Country Status (2)

Country Link
CN (1) CN213073069U (fr)
WO (1) WO2022006930A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116095573B (zh) * 2022-07-29 2023-11-07 荣耀终端有限公司 内核及其装配方法、扬声器模组、电子设备
CN117915246B (zh) * 2024-03-20 2024-06-04 瑞声光电科技(常州)有限公司 扬声器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209201335U (zh) * 2018-12-12 2019-08-02 瑞声科技(新加坡)有限公司 扬声器
CN209526871U (zh) * 2018-12-29 2019-10-22 瑞声科技(新加坡)有限公司 发声器件
CN209659599U (zh) * 2018-12-31 2019-11-19 瑞声科技(新加坡)有限公司 扬声器
CN210016629U (zh) * 2019-05-27 2020-02-04 瑞声科技(新加坡)有限公司 电声器件

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209201335U (zh) * 2018-12-12 2019-08-02 瑞声科技(新加坡)有限公司 扬声器
CN209526871U (zh) * 2018-12-29 2019-10-22 瑞声科技(新加坡)有限公司 发声器件
CN209659599U (zh) * 2018-12-31 2019-11-19 瑞声科技(新加坡)有限公司 扬声器
CN210016629U (zh) * 2019-05-27 2020-02-04 瑞声科技(新加坡)有限公司 电声器件

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