WO2022007173A1 - Dispositif de production de son - Google Patents

Dispositif de production de son Download PDF

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Publication number
WO2022007173A1
WO2022007173A1 PCT/CN2020/114316 CN2020114316W WO2022007173A1 WO 2022007173 A1 WO2022007173 A1 WO 2022007173A1 CN 2020114316 W CN2020114316 W CN 2020114316W WO 2022007173 A1 WO2022007173 A1 WO 2022007173A1
Authority
WO
WIPO (PCT)
Prior art keywords
dome
vibration
sound
voice coil
receiving groove
Prior art date
Application number
PCT/CN2020/114316
Other languages
English (en)
Chinese (zh)
Inventor
马利鹏
狄勋
陈敏敏
毛远翔
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 WO2022007173A1 publication Critical patent/WO2022007173A1/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 utility model relates to the field of sound and electricity, in particular to a sound producing device used in portable electronic products.
  • the sound-generating device of the related art includes a basin frame, a vibration system and a magnetic circuit system respectively fixed to the basin frame, and the magnetic circuit system is used to drive the vibration system to vibrate and emit sound;
  • the dome on the surface of the diaphragm close to one side of the magnetic circuit system and the voice coil connected to the dome, the voice coil drives the diaphragm to vibrate and produce sound through the dome.
  • the purpose of the utility model is to provide a sounding device with excellent high-frequency acoustic performance.
  • the present invention provides a sound-emitting device, which includes a basin frame and a vibration system fixed on the basin frame, the vibration system A voice coil that vibrates and emits sound, the diaphragm includes a vibrating portion, a ring portion extending outward from the periphery of the vibrating portion, and a side extending away from the vibrating portion from the ring portion and being fixed to the basin
  • the fixed part of the frame; the side of the vibration part close to the voice coil is recessed along the vibration direction of the diaphragm to form a first receiving groove, and the vibration system also includes a first receiving groove fixedly received in the first receiving groove.
  • a dome and a second dome fixedly embedded in the vibrating part and covered on the first dome close to the voice coil, the second dome is partially exposed to the vibrating part, and the sound
  • the ring is connected to the side of the second dome away from the first dome.
  • a side of the vibrating portion close to the voice coil is recessed along the vibration direction to form a second accommodating groove, the second accommodating groove is arranged around the first accommodating groove, and the second dome is fixedly accommodated in the second receiving groove.
  • the second dome completely covers the first receiving groove.
  • a side of the second dome close to the first dome is recessed along the vibration direction to form a positioning groove opposite to the first accommodating groove; a part of the first dome is fixedly accommodated in a In the first accommodating groove, the other part is inserted in the positioning groove and fixed with the second dome.
  • a support wall is provided on a side of the vibrating portion close to the voice coil, the support wall is arranged around the second receiving groove and extends in a direction close to the voice coil, and the support wall abuts against the voice coil. the second dome.
  • the first spherical top, the second spherical top and the diaphragm are integrally formed.
  • the first dome and the second dome are integrally formed.
  • the orthographic projection of the first spherical top to the second spherical top along the vibration direction is completely within the range of the second spherical top.
  • the diaphragm is made of silicone or rubber material; the first dome is made of one of PET, PEN, PI, LCP and MCPET; the second dome is PET, PEN , PI, LCP and MCPET in one of the materials.
  • the vibrating film includes a vibrating portion, a folded ring portion extending outward from the periphery of the vibrating portion, and a fixing portion extending from the folded ring portion away from the vibrating portion and fixed to the basin frame.
  • the side of the vibration part close to the voice coil is recessed along the vibration direction of the diaphragm to form a first receiving groove
  • the vibration system also includes a first dome fixedly received in the first receiving groove, and a first dome fixedly embedded in the dome top and covered with
  • the first dome is close to the second dome of the voice coil, the second dome is partially exposed to the vibrating part, and the voice coil is connected to the side of the second dome away from the first dome; in the above structure, through the first dome
  • the combination with the second dome effectively improves the overall stiffness of the diaphragm.
  • the vibration of the diaphragm is smoother, which more effectively avoids the appearance of high-frequency peaks and valleys, reduces distortion, and optimizes the sound-emitting device. high frequency acoustic performance.
  • Embodiment 1 is a schematic three-dimensional structure diagram of Embodiment 1 of the sound-emitting device of the present invention.
  • Embodiment 1 of the sound-emitting device of the present invention
  • FIG. 3 is an exploded view of a partial three-dimensional structure from another angle of Embodiment 1 of the sound-emitting device of the present invention
  • Fig. 4 is a sectional view along line A-A in Fig. 1;
  • Fig. 5 is a partial enlarged view of the part shown in B in Fig. 4;
  • Embodiment 6 is an exploded view of a partial three-dimensional structure of Embodiment 2 of the sound-emitting device of the present invention.
  • FIG. 7 is a schematic cross-sectional view of a partial structure of the second embodiment of the sound-emitting device of the present invention.
  • the present invention provides a sound-generating device 100 , which includes a basin frame 1 , a vibration system 2 fixed on the basin frame 1 , and a magnetic circuit system 3 ; the magnetic circuit system 3 has a magnetic circuit system 3 . Gap 30.
  • the vibration system 2 includes a vibrating membrane 21 fixed on the basin frame 1 , a voice coil 22 for driving the vibrating membrane 21 to vibrate and sound, and a first dome 23 and The second dome 24 .
  • the diaphragm 21 is recessed along its vibration direction to form a first receiving groove 2101 , the first dome 23 is fixedly received in the first receiving groove 2101 , and the second dome 24 Fixedly embedded in the diaphragm 21 and covered on the first dome 23 close to the voice coil 22 , the voice coil 22 is connected to the second dome 24 away from the first dome 23 .
  • One side is inserted into the magnetic gap 30 .
  • the side of the diaphragm 21 close to the second dome 24 is recessed along the vibration direction to form a second receiving groove 2102 , and the second receiving groove 2102 is arranged around the first receiving groove 2101 .
  • the second dome 24 is fixedly accommodated in the second accommodating groove 2102, and through the setting of the second accommodating groove 2102, the second dome 24 can be effectively fixed and accommodated in the inner space of the diaphragm 21, which improves the The space utilization rate of the diaphragm 21 avoids the setting of the second spherical top 24 from occupying the vibration space.
  • the vibrating membrane 21 includes a vibrating portion 211 , a ring portion 212 extending outward from the periphery of the vibrating portion 211 , and a side extending away from the vibrating portion 211 from the ring portion 212 and being fixed on the vibrating portion 211 .
  • the fixing part 213 of the basin stand 1 is a part of the basin stand 1 .
  • the first receiving groove 2101 is formed by the side of the vibrating part 211 close to the voice coil 22 being recessed along the vibration direction of the diaphragm 21
  • the second receiving groove 2102 is formed by the vibrating part 211 close to the One side of the voice coil 22 is recessed along the vibration direction of the diaphragm 21
  • the first spherical top 23 and the second spherical top 24 are respectively attached and fixed to the vibration part 211
  • the second spherical top The top 24 is partially exposed on the vibrating portion 211
  • the voice coil 22 is connected to the side of the second spherical top 24 away from the vibrating membrane 21 .
  • the second dome 24 completely covers the first receiving groove 2101; more specifically, the end surface of the diaphragm 21 close to the second dome 24 and the first dome 23 close to the second dome
  • the end surfaces of the tops 24 are located on the same plane, and the end surfaces of the first spherical tops 23 close to the second spherical tops 24 abut against the second spherical tops 24 .
  • the orthographic projection of the first spherical top 23 to the second spherical top 24 along the vibration direction of the diaphragm 21 is completely within the range of the second spherical top 24 .
  • the overall rigidity of the diaphragm 21 is effectively improved through the cooperative arrangement of the first dome 23 and the second dome 24, and the vibration of the diaphragm 21 is smoother during high frequency vibration. , the occurrence of high-frequency peaks and valleys is more effectively avoided, the distortion phenomenon is reduced, and the high-frequency acoustic performance of the sound-emitting device 100 is optimized.
  • a support wall 2111 is provided on the side of the vibration part 211 close to the voice coil 22 .
  • 2111 surrounds the second receiving groove 2102 and extends toward the voice coil 22, the support wall 2111 abuts against the second dome 24, and the support wall 2111 is the second dome
  • the bottom of 24 provides support, so that the second dome 24 is not easy to fall off from the diaphragm 21 , thereby improving the fixing reliability between the two, making the sound-emitting device 100 more reliable.
  • the film 21 is an integral molding structure.
  • first dome 23 and the second dome 24 are integrally formed, and this arrangement not only improves the reliability of the fixation between the first dome 23 and the second dome 24, but also effectively simplifies the assembly process.
  • the diaphragm 21 is made of silicone or rubber
  • the first dome 23 is PET (Polyethylene terephthalate, namely polyethylene terephthalate), PEN (Polyethylene naphthalate two formic acid glycol ester, namely polyethylene terephthalate), PI (Polyimide, namely polyimide), LCP (Liquid Crystal Polymer, namely liquid crystal polymer) and MCPET (Micro Cellular PET (polyethylene terephthalate) Terephthalate (that is, nano-reflector) is made of one of the materials
  • the structure of the first dome 23 can be an aluminum foil sandwich structure dome or a carbon fiber sandwich structure dome
  • the second dome 24 is PET ( Polyethylene terephthalate, namely polyethylene terephthalate), PEN (Polyethylene naphthalate two formic acid glycol ester, namely polyethylene terephthalate), PI (Polyimide, namely polyimide), LCP (Liquid Crystal Polymer,
  • the specific materials or structural forms of the diaphragm 21, the first dome 23 and the second dome 24 can be specifically set according to the actual situation. Conventional materials for membrane, first dome and second dome.
  • the magnetic circuit system 3 includes a magnetic bowl 31 fixed to the basin frame 1 , a main magnetic steel 32 fixed to the magnetic bowl 31 , and two first auxiliary magnetic steels fixed to opposite sides of the main magnetic steel 32 .
  • the two first auxiliary magnetic steels 33 and the two second auxiliary magnetic steels 34 are spaced apart from the main magnetic steel 32 to form the magnetic gap 30 .
  • FIGS. 6-7 illustrate the sound-emitting device 100 a of the second embodiment.
  • FIG. 6 is a schematic diagram of another embodiment of the structure shown in FIG. 3
  • FIG. 7 is substantially another embodiment of the structure shown in FIG. 5 .
  • the sound-emitting device 100a of the second embodiment is a derivative implementation of the sound-emitting device of the first embodiment, and the structures of the two are basically the same, and the same parts will not be repeated one by one.
  • the main difference is that:
  • the second spherical top 24a is recessed along the vibration direction of the diaphragm 21a to form a positioning groove 240a opposite to the first receiving groove 2101a; a part of the first spherical top 23a is fixedly received in the first receiving groove 2101a, and the other part is inserted into the positioning groove 2101a.
  • the groove 240a is fixed with the second dome 24a.
  • the positioning groove 240a allows the first dome 23a and the second dome 24a to be inserted and fixed to each other, effectively improving the fixing reliability between the two, and better improving the reliability of the structure formed by the two. stiffness.
  • the vibrating film includes a vibrating portion, a folded ring portion extending outward from the periphery of the vibrating portion, and a fixing portion extending from the folded ring portion away from the vibrating portion and fixed to the basin frame.
  • the side of the vibration part close to the voice coil is recessed along the vibration direction of the diaphragm to form a first receiving groove
  • the vibration system also includes a first dome fixedly received in the first receiving groove, and a first dome fixedly embedded in the dome top and covered with
  • the first dome is close to the second dome of the voice coil, the second dome is partially exposed to the vibrating part, and the voice coil is connected to the side of the second dome away from the first dome; in the above structure, through the first dome
  • the combination with the second dome effectively improves the overall stiffness of the diaphragm.
  • the vibration of the diaphragm is smoother, which more effectively avoids the appearance of high-frequency peaks and valleys, reduces distortion, and optimizes the sound-emitting device. high frequency acoustic performance.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

Un dispositif de production de son est divulgué. Le dispositif de production de son comprend un cadre et un système de vibration fixé sur le cadre. Le système de vibration comprend une membrane vibrante fixée sur le cadre et une bobine acoustique utilisée pour entrainer la membrane vibrante de façon à la faire vibrer afin de produire un son, la membrane vibrante comprenant une partie vibrante, une partie annulaire pliée s'étendant vers l'extérieur depuis la périphérie de la partie vibrante, et une partie de fixation s'étendant depuis un côté de la partie annulaire pliée opposé à la partie vibrante et fixée sur le cadre, un côté de la partie vibrante proche de la bobine acoustique étant évidé dans une direction de vibration de la membrane vibrante afin de former un premier évidement de réception. Le système de vibration comprend en outre un premier dôme reçu de manière fixe dans le premier évidement de réception et un second dôme incorporé de manière fixe dans la partie vibrante et recouvrant le premier dôme pour être proche de la bobine acoustique, le second dôme étant partiellement exposé depuis la partie vibrante, et la bobine acoustique étant reliée à un côté du second dôme opposé au premier dôme. Par rapport à l'état de la technique, le dispositif de production de son de la présente demande présente d'excellentes performances acoustiques à haute fréquence.
PCT/CN2020/114316 2020-07-06 2020-09-10 Dispositif de production de son WO2022007173A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021310045.6 2020-07-06
CN202021310045.6U CN212812018U (zh) 2020-07-06 2020-07-06 发声器件

Publications (1)

Publication Number Publication Date
WO2022007173A1 true WO2022007173A1 (fr) 2022-01-13

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Application Number Title Priority Date Filing Date
PCT/CN2020/114316 WO2022007173A1 (fr) 2020-07-06 2020-09-10 Dispositif de production de son

Country Status (2)

Country Link
CN (1) CN212812018U (fr)
WO (1) WO2022007173A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201611945U (zh) * 2009-12-07 2010-10-20 瑞声声学科技(深圳)有限公司 电磁扬声器
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
US20170353801A1 (en) * 2016-06-07 2017-12-07 Aac Acoustic Technologies (Shenzhen) Co., Ltd. Vibration system
CN208462044U (zh) * 2018-12-25 2019-02-01 瑞声光电科技(常州)有限公司 一种扬声器
CN109819382A (zh) * 2018-12-30 2019-05-28 瑞声声学科技(深圳)有限公司 扬声器
CN109862490A (zh) * 2018-12-30 2019-06-07 瑞声声学科技(深圳)有限公司 扬声器
CN109889964A (zh) * 2018-12-30 2019-06-14 瑞声科技(新加坡)有限公司 发声器件
CN209897256U (zh) * 2019-04-19 2020-01-03 瑞声科技(新加坡)有限公司 振膜及发声器件

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201611945U (zh) * 2009-12-07 2010-10-20 瑞声声学科技(深圳)有限公司 电磁扬声器
US20170353801A1 (en) * 2016-06-07 2017-12-07 Aac Acoustic Technologies (Shenzhen) Co., Ltd. Vibration system
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
CN208462044U (zh) * 2018-12-25 2019-02-01 瑞声光电科技(常州)有限公司 一种扬声器
CN109819382A (zh) * 2018-12-30 2019-05-28 瑞声声学科技(深圳)有限公司 扬声器
CN109862490A (zh) * 2018-12-30 2019-06-07 瑞声声学科技(深圳)有限公司 扬声器
CN109889964A (zh) * 2018-12-30 2019-06-14 瑞声科技(新加坡)有限公司 发声器件
CN209897256U (zh) * 2019-04-19 2020-01-03 瑞声科技(新加坡)有限公司 振膜及发声器件

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