WO2020140182A1 - Dispositif de production de son - Google Patents

Dispositif de production de son Download PDF

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Publication number
WO2020140182A1
WO2020140182A1 PCT/CN2018/125963 CN2018125963W WO2020140182A1 WO 2020140182 A1 WO2020140182 A1 WO 2020140182A1 CN 2018125963 W CN2018125963 W CN 2018125963W WO 2020140182 A1 WO2020140182 A1 WO 2020140182A1
Authority
WO
WIPO (PCT)
Prior art keywords
side wall
top wall
diaphragm
folding ring
magnetic circuit
Prior art date
Application number
PCT/CN2018/125963
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/CN2018/125963 priority Critical patent/WO2020140182A1/fr
Publication of WO2020140182A1 publication Critical patent/WO2020140182A1/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

  • the invention relates to the technical field of acoustic equipment, in particular to a sound-emitting device.
  • the miniature sound-emitting devices used in this type of equipment need to be more miniaturized, and the cooperation with other components around the miniature sound-emitting devices is more compact.
  • the micro-sounding devices used in them require not only miniaturization, but also high sound quality and stereo effects.
  • the diaphragm used in the sound emitting device of the prior art includes a folding ring and a dome stacked on the folding ring, the folding ring includes a protrusion with an arc-shaped cross section, the protrusion includes a top wall, and the top wall is close to the inside of the folding ring
  • the first side wall extending from the end to the magnetic circuit system and the second side wall extending from the end away from the top wall to the inside of the folding ring toward the magnetic circuit system.
  • the thickness of the first side wall and the second side wall are equal. Therefore, during the vibration of the diaphragm, amplitude asymmetry, severe rocking, and high sound quality distortion are caused.
  • the object of the present invention is to provide a sound-generating device, which aims to solve the problems of the existing technology in which the diaphragm has asymmetry in amplitude, serious sway, and high distortion in sound quality.
  • the sound-generating device of this embodiment includes a basin frame and a vibration system respectively fixed to the basin frame and a magnetic circuit system with a magnetic gap.
  • the vibration system includes a diaphragm fixed to the basin frame and inserted into the magnetic gap to drive the vibration of the diaphragm
  • the voiced voice coil, the diaphragm includes a folding ring fixed to the basin frame, the folding ring includes a protruding portion with an arc-shaped cross section, the protruding portion includes a top wall, and an end near the interior of the folding ring from the top wall faces the magnetic circuit system
  • the first side wall includes a first connection portion close to the top wall, the first side wall and the top wall are smoothly transitionally connected by the first connection portion, and the thickness of the first connection portion gradually decreases in the direction from the first side wall to the top wall
  • the second side wall includes a second connection portion close to the top wall. The second side wall and the top wall are smoothly transitionally connected through the second connection portion and the thickness gradually decreases in the direction from the second side wall to the top wall.
  • the protruding portion bends and protrudes away from the magnetic circuit system.
  • the folding ring further includes a first fixing portion extending horizontally from the protruding portion toward the inside of the folding ring and a second fixing portion extending horizontally from the protruding portion away from the folding ring, and the diaphragm further includes a dome stacked on the folding ring.
  • the folding ring is a hollow structure
  • the dome covers the hollow structure and is fixedly connected to the first fixing portion.
  • the diaphragm is a polymer material such as silica gel, rubber, polyetheretherketone, thermoplastic polyurethane elastomer rubber, silicone rubber and the like.
  • the magnetic circuit system includes a yoke, a main magnetic steel fixed to the yoke, and auxiliary magnetic steels which are respectively spaced on opposite sides of the main magnetic steel and form a magnetic gap with the main magnetic steel.
  • the secondary magnetic steel includes two, and the magnetic circuit system further includes a main pole core stacked on the main magnetic steel and an upper clamping plate embedded in the basin frame.
  • the upper clamping plate includes a ring-shaped fixing ring fixed on the basin frame and
  • the secondary pole cores are respectively extended to the two secondary magnetic steels by the fixing rings, and the secondary pole cores are stacked on the two secondary magnetic steels respectively.
  • the vibration system further includes an elastic support member.
  • the elastic support member includes a connecting head section fixedly connected to the basin frame, a supporting section fixedly connected to an end of the voice coil facing away from the diaphragm, and an elastic receiving section connecting the connecting head section and the supporting section.
  • the voice coil drives the diaphragm to vibrate under the combined action of the changing current and the magnetic circuit system, so that the air near the diaphragm vibrates and sounds.
  • the first side wall, the second side wall, and the top wall of the diaphragm are set to different thicknesses, and the thickness of the second side wall is greater than the thickness of the first side wall, and the thickness of the first side wall is greater than the thickness of the top wall .
  • This configuration can adjust the strength of the diaphragm structure, increase the upper amplitude of the diaphragm, suppress the lower amplitude, and simultaneously optimize the upper and lower amplitudes of the diaphragm to offset the asymmetry of the left and right sides, thereby improving product shake and reducing distortion of the sounding device .
  • FIG. 1 is a schematic exploded view of the sound-generating device of the present invention
  • FIG. 2 is a schematic view of the stereo structure of the sound emitting device of the present invention after assembly
  • Figure 3 is a cross-sectional view of Figure 2 along the A-A direction;
  • FIG. 4 is a cross-sectional view of FIG. 2 along the B-B direction;
  • FIG. 5 is a schematic view of the stereo structure of the diaphragm of the sound-generating device of the present invention.
  • FIG. 6 is a cross-sectional view of FIG. 5 along the C-C direction;
  • FIG. 7 is an enlarged schematic diagram at D in FIG. 6.
  • the sound generating device of this embodiment includes a basin holder 10, a magnetic circuit system 30 and a vibration system 40 respectively fixed to the basin holder 10.
  • the magnetic circuit system 30 includes a yoke 34, a main magnetic steel 31 fixed to the yoke 34, and a secondary magnetic steel 33 spaced apart on opposite sides of the main magnetic steel 31 and forming a magnetic gap 36 with the main magnetic steel 31.
  • the magnetic steel 31 and the auxiliary magnetic steel 33 serve as sources of magnetic force lines for magnetic induction.
  • the vibration system 40 is fixed to the diaphragm 41 of the basin holder 10 and the voice coil 43 inserted into the magnetic gap 36 and driving the diaphragm 41 to vibrate and sound.
  • the diaphragm 41 includes a folding ring 410 fixed to the basin frame 10.
  • the folding ring 410 includes a protruding portion 412 having an arc-shaped cross section, and the protruding portion 412 bends and protrudes away from the magnetic circuit system 30.
  • the protrusion 412 includes a top wall 4122, a first side wall 4121 extending from the end of the top wall 4122 close to the inside of the folding ring 410 toward the magnetic circuit system 40, and a side end of the top wall 4122 away from the inside of the folding ring 410 toward the magnetic circuit
  • the second side wall 4123 of the system 40 extends.
  • the thickness H1 of the second side wall 4123 is greater than the thickness H2 of the first side wall 4121
  • the thickness H2 of the first side wall 4121 is greater than the thickness H3 of the top wall 4122.
  • the structural strength of the diaphragm 41 can be adjusted, the upper amplitude of the diaphragm 41 can be raised, the lower amplitude can be suppressed, and the upper and lower amplitudes of the diaphragm 41 can be synchronously optimized to offset the asymmetry of the left and right of the highest point, which further improves product shake and reduces sound generation.
  • the distortion of the device can improve the sound quality and stereo effect of the sounding device, and improve the Q value and SPL performance of the sounding device.
  • connection between the first side wall 4121 and the top wall 4122 and the connection between the second side wall 4123 and the top wall 4122 are transitionally connected in a gradual manner.
  • the first side wall 4121 includes a first connection portion 41211 close to the top wall 4122, then the first side wall 4121 and the top wall 4122 are smoothly connected by the first connection portion 41211, and the first connection
  • the thickness L1 of the portion 41211 gradually decreases in the direction from the first side wall 4121 to the top wall 4122
  • the second side wall 4123 includes the second connection portion 41231 close to the top wall 4122, then the distance between the second side wall 4123 and the top wall 4122
  • the second connection portion 41231 is smoothly transitionally connected, and the thickness L2 of the second connection portion 41231 gradually decreases in the direction from the second side wall 4123 to the top wall 4122.
  • connection between the first side wall 4121 and the top wall 4122 and the connection between the second side wall 4123 and the top wall 4122 may also be transitionally connected in a sudden manner, or the first side wall 4121 and the top wall 4123
  • the connection between the second side wall 4123 and the top wall 4122 adopts a connection in which one side of the connection transitions in a gradual manner and the other side transitions in a sudden manner.
  • the material for producing the diaphragm 41 may be polymer materials such as PEEK (Polyetheretherketone, polyetheretherketone), TPE (Thermoplastic Elastomer, thermoplastic elastomer), TPU (Thermoplastic polyurethanes, thermoplastic polyurethane elastomer rubber), and silicone rubber.
  • PEEK Polyetheretherketone, polyetheretherketone
  • TPE Thermoplastic Elastomer, thermoplastic elastomer
  • TPU Thermoplastic polyurethanes, thermoplastic polyurethane elastomer rubber
  • silicone rubber silicone rubber
  • the folding ring 410 further includes a first fixing portion 411 extending horizontally from the protrusion 412 toward the inside of the folding ring 410 and a second fixing portion 413 extending horizontally from the protrusion 412 away from the folding ring 410.
  • the diaphragm 41 of the sound-emitting device of this embodiment further includes a dome 50, and the folding ring 410 has a hollow structure, that is, the first fixing portion 411 surrounds to form the diaphragm window 400, and the dome 50 covers the diaphragm window 400 and The first fixing portion 411 is glued and fixed. In this way, the diaphragm 41 has better structural strength in the process of sound transmission by the sound-emitting device, which ensures good reliability of the sound-emitting device.
  • the magnetic circuit system 30 of this embodiment further includes a stack The main pole core 32 provided on the main magnetic steel 31 and the upper clamping plate 35 in which the pot holder 10 is embedded.
  • the upper clamping plate 35 includes a ring-shaped fixing ring 351 fixed to the basin holder 10 and a secondary pole core 352 extending from the fixing ring 351 toward the secondary magnetic steel 33.
  • the number of the secondary magnetic steel 33 and the secondary pole core 352 are two, the two secondary magnetic steels 33 are disposed on opposite sides of the primary magnetic steel 31, and the two secondary pole cores 352 are respectively directed by the fixing ring 351 toward the two
  • the auxiliary magnets 33 extend and are stacked on the two auxiliary magnets 33 respectively.
  • the vibration system 40 further includes an elastic support member 44 which includes a connector section 441 fixedly connected to the basin holder 10, a support section 443 fixedly connected to the end of the voice coil 43 facing away from the diaphragm 41, and connecting the connector section 441 and the support The elastic receiving section 442 of section 443.
  • the elastic support 44 elastically suspends the voice coil 43 under the diaphragm 41, further improving the reliability of the entire vibration system 40.
  • the thickness of the first side wall 4121 is greater than the thickness of the first side wall 4121, and the thickness of the first side wall 4121 is greater than the thickness of the top wall 4122.
  • Such an arrangement can adjust the structural strength of the diaphragm 41, increase the upper amplitude of the diaphragm 41, suppress the lower amplitude, and simultaneously optimize the problem of the asymmetry of the upper and lower amplitudes of the diaphragm 41 shifting to the left and right, thereby improving product shake and reducing sound generation Distortion of the device.

Landscapes

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

Abstract

La présente invention concerne un dispositif de production de son, comprenant un cadre de cuvette, un système de vibration et un système de circuit magnétique; à la fois le système de vibration et le système de circuit magnétique sont fixés sur le cadre de cuvette, et le système de circuit magnétique est pourvu d'un entrefer magnétique; le système de vibration comprend une membrane vibrante qui est fixée sur le cadre de cuvette ainsi qu'un anneau sonore qui est inséré dans l'espace magnétique de façon à entraîner la membrane vibrante à vibrer pour produire un son; la membrane vibrante comprend un anneau de pliage qui est fixé sur le cadre de cuvette et qui comprend une partie en saillie dont une section transversale est une structure arquée; la partie en saillie comprend une paroi supérieure, une première paroi latérale qui s'étend vers le système de circuit magnétique à partir d'une extrémité de la paroi supérieure qui est proche de l'intérieur de l'anneau de pliage, et une seconde paroi latérale qui s'étend vers le système de circuit magnétique à partir d'une extrémité de la paroi supérieure qui est éloignée de l'intérieur du rebord ondulé, la seconde paroi latérale étant plus épaisse que la première paroi latérale, et la première paroi latérale étant plus épaisse que la paroi supérieure. Le dispositif de production de son de la présente invention peut résoudre des problèmes dans l'état de la technique tels que la distorsion de la qualité du son étant en raison de l'amplitude d'une membrane de vibration qui est asymétrique et le balancement de la membrane de vibration qui est grave.
PCT/CN2018/125963 2018-12-30 2018-12-30 Dispositif de production de son WO2020140182A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/125963 WO2020140182A1 (fr) 2018-12-30 2018-12-30 Dispositif de production de son

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/125963 WO2020140182A1 (fr) 2018-12-30 2018-12-30 Dispositif de production de son

Publications (1)

Publication Number Publication Date
WO2020140182A1 true WO2020140182A1 (fr) 2020-07-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/125963 WO2020140182A1 (fr) 2018-12-30 2018-12-30 Dispositif de production de son

Country Status (1)

Country Link
WO (1) WO2020140182A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201750542U (zh) * 2010-07-09 2011-02-16 瑞声光电科技(常州)有限公司 电磁发声器
CN202488683U (zh) * 2012-01-12 2012-10-10 瑞声光电科技(常州)有限公司 发声器
CN205408151U (zh) * 2016-03-23 2016-07-27 浙江全方音响科技有限公司 双折环辐射器
CN106817658A (zh) * 2017-01-12 2017-06-09 瑞声科技(沭阳)有限公司 振膜及发声器件
CN206575585U (zh) * 2017-02-13 2017-10-20 吉林航盛电子有限公司 一种具有凹槽的扬声器用音盆及扬声器
CN107948894A (zh) * 2018-01-03 2018-04-20 奥音科技（北京）有限公司 硅胶振膜及扬声器
WO2018116834A1 (fr) * 2016-12-21 2018-06-28 Sony Corporation Dispositif formant casque d'écoute

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201750542U (zh) * 2010-07-09 2011-02-16 瑞声光电科技(常州)有限公司 电磁发声器
CN202488683U (zh) * 2012-01-12 2012-10-10 瑞声光电科技(常州)有限公司 发声器
CN205408151U (zh) * 2016-03-23 2016-07-27 浙江全方音响科技有限公司 双折环辐射器
WO2018116834A1 (fr) * 2016-12-21 2018-06-28 Sony Corporation Dispositif formant casque d'écoute
CN106817658A (zh) * 2017-01-12 2017-06-09 瑞声科技(沭阳)有限公司 振膜及发声器件
CN206575585U (zh) * 2017-02-13 2017-10-20 吉林航盛电子有限公司 一种具有凹槽的扬声器用音盆及扬声器
CN107948894A (zh) * 2018-01-03 2018-04-20 奥音科技（北京）有限公司 硅胶振膜及扬声器

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