WO2020228079A1 - Haut-parleur - Google Patents

Haut-parleur Download PDF

Info

Publication number
WO2020228079A1
WO2020228079A1 PCT/CN2019/090023 CN2019090023W WO2020228079A1 WO 2020228079 A1 WO2020228079 A1 WO 2020228079A1 CN 2019090023 W CN2019090023 W CN 2019090023W WO 2020228079 A1 WO2020228079 A1 WO 2020228079A1
Authority
WO
WIPO (PCT)
Prior art keywords
annular
plate
voice coil
diaphragm
annular diaphragm
Prior art date
Application number
PCT/CN2019/090023
Other languages
English (en)
Chinese (zh)
Inventor
宋威
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
Publication of WO2020228079A1 publication Critical patent/WO2020228079A1/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
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
    • H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
    • 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
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • 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 design, in particular to a loudspeaker.
  • the existing speakers include a basin frame, a vibration system installed on the basin frame, and a magnetic circuit system.
  • the vibration system includes a diaphragm, an annular dome, a skeleton and a voice coil.
  • the annular dome is connected to the diaphragm, and the voice coil is in its vibration direction.
  • the frame is connected with the ring dome to drive the diaphragm to vibrate and produce sound.
  • the structure of the existing loudspeaker adopts a single diaphragm design method, which often results in unbalanced vibration of the vibration system and more noise.
  • the object of the present invention is to provide a loudspeaker, which can make the vibration of the vibration system more balanced, effectively reduce the noise caused by the unbalanced vibration, and effectively improve the sound quality.
  • a speaker includes a vibration system, a magnetic circuit system for driving the vibration system to vibrate and produce sound, and a basin frame for installing the vibration system and the magnetic circuit system.
  • the basin frame includes The bottom frame of the magnetic circuit system and the top cover fixed on the magnetic circuit system.
  • the vibration system includes a first ring-shaped diaphragm, a second ring-shaped diaphragm, a ring-shaped dome, a voice coil, and a frame.
  • the outer side of the diaphragm is connected to the bottom frame, the inner side of the first annular diaphragm is connected to the outer side of the annular dome, the outer side of the second annular diaphragm is connected to the inner side of the annular dome, the The inner side of the second ring diaphragm is connected with the top cover, one end of the frame is connected with the voice coil, and the other end is connected with the ring dome.
  • the magnetic circuit system is located inside the second annular diaphragm.
  • the magnetic circuit system includes a magnetic conductive plate installed in the middle of the bottom frame, a main magnetic steel arranged in the middle of the magnetic conductive plate, four magnetic steels arranged on the magnetic conductive plate and surrounding the The auxiliary magnets arranged on the main magnet, the main pole core attached to the side of the main magnet far away from the magnetic conductive plate, and four main pole cores attached to the four auxiliary magnets far away from the conductor
  • the main magnetic steel and the secondary magnetic steel are arranged at intervals, and the voice coil can be movably sleeved outside the main magnetic steel.
  • the bottom frame includes a bottom plate and a first side plate protruding from the edge of the bottom plate, the outer side of the first annular diaphragm is connected to the first side plate, and the middle of the bottom plate is opened There is a through hole, and the magnetic conductive plate is embedded in the through hole.
  • the top cover includes a top plate, a protrusion protruding from the middle of the top plate, and a second side plate protruding from the edge of the top plate, and the side of the protrusion away from the top plate is connected to
  • the magnetic circuit system is connected, the inner side of the second annular diaphragm is connected to the second side plate, and the voice coil can be movably sleeved outside the bump.
  • the two skeletons respectively extend from two opposite sides of the voice coil to connect to the annular dome.
  • a side of each frame facing the second side plate is recessed with an escape notch for avoiding the second side plate.
  • each frame includes a first extension part, a second extension part, and a third extension part, the first extension part is arranged at intervals beside the voice coil, and the second extension part Portion and the third extension portion are respectively connected to the outer side wall of the voice coil from both ends of the first extension portion in a direction perpendicular to the vibration direction of the voice coil, and the first extension portion is connected to the ring ball Top, the avoidance notch is provided at the second extension portion and the third extension portion.
  • the first annular diaphragm includes a first folding ring, a first fixing portion located inside the first folding ring, and a second fixing portion located outside the first folding ring.
  • a fixed portion is connected to the outer side of the annular dome, and the second fixed portion is connected to the bottom frame;
  • the second annular diaphragm includes a second folding ring, and a third ring located inside the second folding ring.
  • the first folding ring is an arc-shaped structure in which both ends are bent and protruded from the first fixing portion and the second fixing portion in a direction away from the bottom frame;
  • the two-folding ring is an arc structure with two ends respectively bent and protruding from the third fixing part and the fourth fixing part in a direction away from the bottom frame.
  • the embodiment of the present invention is provided with a double-diaphragm structure in which the vibration system includes a first ring-shaped diaphragm and a second ring-shaped diaphragm, which can make the vibration of the vibration system more balanced and effectively reduce the unbalance due to vibration.
  • the generated noise can effectively improve the sound quality; in addition, through the above-mentioned connection method, the first ring diaphragm, the second ring diaphragm, the ring dome, the bottom frame and the top cover can be enclosed to form a sealed space to ensure sealing .
  • FIG. 1 is a schematic top view of a speaker provided by an embodiment of the present invention
  • Figure 2 is a schematic partial cross-sectional view of the A-A section in Figure 1;
  • Fig. 3 is an exploded schematic diagram of a speaker provided by an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a top cover provided by an embodiment of the present invention.
  • Figure 5 is an exploded schematic diagram of a vibration system provided by an embodiment of the present invention.
  • Figure 6 is an exploded schematic diagram of a magnetic circuit system provided by an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of the connection between the voice coil and the skeleton provided by an embodiment of the present invention.
  • an element when an element is referred to as being “fixed on” or “disposed on” another element, the element may be directly on the other element or there may be a centering element at the same time.
  • an element When an element is referred to as being “connected” to another element, it can be directly connected to the other element or an intermediate element may also exist.
  • a speaker 100 provided by an embodiment of the present invention includes a basin frame 10, a vibration system 20 installed on the basin frame 10, and a vibration system 20 installed on the basin frame 10 for driving the vibration system 20 to vibrate and sound Magnetic circuit system 30.
  • the basin frame 10 includes a bottom frame 11 for accommodating the magnetic circuit system 30 and a top cover 12 fixed on the magnetic circuit system 30.
  • the bottom frame 11 includes a bottom plate 111 and a first side plate 112 protruding from the edge of the bottom plate 111.
  • the top cover 12 includes a top board 121, a second side board 122 protruding from the edge of the top board, and a bump 123 protruding from the middle of the top board 121. The side of the bump 123 away from the top board 121 is connected to the magnetic circuit system 30.
  • the bottom plate 111 and the top plate 121 are arranged in parallel, the first side plate 112 extends from the edge of the bottom plate 111 toward the side where the top plate 121 is located, and the second side plate 122 extends from the edge of the top plate 121 toward the side where the bottom plate 111 is located.
  • the vibration system 20 includes a first ring-shaped diaphragm 21, a second ring-shaped diaphragm 22, a ring-shaped dome 23, a voice coil 24, and a frame 25.
  • the outer side of the first ring-shaped diaphragm 21 is connected with the bottom frame 11, specifically with the first side plate 112 connection, the inside of the first annular diaphragm 21 is connected with the outside of the annular dome 23, the outside of the second annular diaphragm 22 is connected with the inside of the annular dome 23, and the inside of the second annular diaphragm 22 is connected with the top cover 12.
  • one end of the frame 25 is connected to the voice coil 24, and the other end is connected to the annular dome 23.
  • the vibration system 20 By setting the vibration system 20 with a double-diaphragm structure including a first ring-shaped diaphragm 21 and a second ring-shaped diaphragm 22, the vibration of the vibration system 20 can be made more balanced, the noise caused by unbalanced vibration can be effectively reduced, and the sound quality can be effectively improved;
  • the first annular diaphragm 21, the second annular diaphragm 22, the annular dome 23, the bottom frame 11, and the top cover 12 can be enclosed to form a sealed space as a whole to ensure sealing.
  • the first annular diaphragm 21 includes a first folding ring 211, a first fixing portion 212 located inside the first folding ring 211, and a second fixing portion 213 located outside the first folding ring 211, the first fixing portion 212 and the annular dome 23 is connected to the outside, the second fixing part 213 is connected to the bottom frame 11, specifically connected to the first side plate 112;
  • the second annular diaphragm 22 includes a second folding ring 221 and a third fixing part located inside the second folding ring 221 222 and the fourth fixing portion 223 located outside the second folding ring 221, the third fixing portion 222 is connected to the top cover 12, specifically connected to the second side plate 122, and the fourth fixing portion 223 is connected to the inner side of the annular dome 23.
  • the first folding ring 211 is an arc-shaped structure in which both ends are respectively bent and protruded from the first fixing portion 212 and the second fixing portion 213 in a direction away from the bottom frame 11;
  • the portion 222 and the fourth fixing portion 223 are curved and protruding arc structures in a direction away from the bottom frame 11.
  • the voice coil 24 can be movably sleeved outside the bump 123.
  • Two skeletons 25 are provided, and the two skeletons 25 respectively extend from two opposite sides of the voice coil 24 to connect to the annular dome 23.
  • the voice coil 24 can evenly transmit vibration to the annular dome 23 through the two skeletons 25, so that the vibration of the vibration system 20 is balanced and improves Sound quality.
  • the frame 25 is not limited to two, and the frame 25 is provided with one, three, four or any other number, as long as the voice coil 24 can drive the first annular diaphragm 21 and the The second annular diaphragm 22 may vibrate.
  • a side of each frame 25 facing the second side plate 122 is recessed with an escape notch 26 for avoiding the second side plate 122.
  • Each frame 25 includes a first extension 251, a second extension 252, and a third extension 253.
  • the first extension 251 is spaced apart from the voice coil 24.
  • the second extension 252 and the third extension 253 The two ends of the first extension 251 are connected to the outer side wall of the voice coil 24 in a direction perpendicular to the vibration direction of the voice coil 24.
  • the first extension 251 is connected to the annular dome 23, and the avoidance gap 26 is provided in the second extension 252 and The third extension 253.
  • the first extension 251 and the annular dome 23 have a larger connection area, and the connection between the frame 25 and the annular dome 23 is more stable. In this way, when the voice coil 24 drives the annular dome 23 high through the framework 25 In the case of high frequency vibration or large amplitude vibration, the joint between the frame 25 and the annular dome 23 is not prone to fracture.
  • the magnetic circuit system 30 is located inside the second annular diaphragm 122. By arranging the magnetic circuit system 30 to be located inside the second annular diaphragm 122, the vibration system 20 will not obstruct the voice coil 24 in the vibration direction of the voice coil 24, and the effective vibration space of the voice coil 24 can be greatly improved.
  • the power of the speaker 100 is convenient for the optimal design of the magnetic circuit system 30.
  • the magnetic circuit system 30 includes a magnetic conductive plate 31 installed in the middle of the bottom frame 111, a main magnetic steel 32 arranged in the middle of the magnetic conductive plate 31, and four auxiliary magnetic steels arranged on the magnetic conductive plate 31 and arranged around the main magnetic steel 32 33.
  • the main pole core 34 attached to the main magnet 32 on the side away from the magnetic conductive plate 31 and the four secondary pole cores 35 attached to the four auxiliary magnets 33 on the side away from the magnetic conductive plate 31 respectively.
  • the magnet 32 and the auxiliary magnet 33 are arranged at intervals, and the voice coil 24 can be movably sleeved outside the main magnet 32. It is understandable that the number of auxiliary magnets 33 is not limited to four. For example, there are two auxiliary magnets 33. Two auxiliary magnets 33 may be arranged on two opposite sides of the main magnet 32 respectively.
  • a through hole 113 is opened in the middle of the bottom plate 111, and the magnetic conductive plate 31 is embedded in the through hole 113. Due to the limitation of the size of the speaker 100, the distance between the bottom plate 111 and the annular dome 23 is limited. By opening a through hole 113 on the bottom plate 111, the magnetic conductive plate 31 is embedded in the through hole 113, which can reduce the magnetic conductive plate 31 occupying the bottom plate. The distance from 111 to the annular dome 23 can increase the effective vibration space of the voice coil 24 and increase the power of the speaker 100.

Landscapes

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

Abstract

La présente invention concerne un haut-parleur, comprenant un panier, un système de vibration et un système de circuit magnétique. Le panier comprend un cadre inférieur destiné à recevoir le système de circuit magnétique et un couvercle supérieur fixé sur le système de circuit magnétique; le système de vibration comprend une première membrane annulaire, une deuxième membrane annulaire, un dôme annulaire, une bobine mobile et un cadre; la face extérieure de la première membrane annulaire est reliée au cadre inférieur; la face intérieure de la première membrane annulaire est reliée à la face extérieure du dôme annulaire; la face extérieure de la deuxième membrane annulaire est reliée à la face intérieure du dôme annulaire; la face intérieure de la deuxième membrane annulaire est reliée au couvercle supérieur; une extrémité de l'armature est reliée à la bobine mobile, et l'autre extrémité est reliée au dôme annulaire. Selon le haut-parleur fourni dans la présente invention, en configurant le système de vibration pour avoir une structure à double membrane, la vibration du système de vibration devient plus équilibrée, réduisant ainsi efficacement le bruit généré par une vibration déséquilibrée et améliorant effectivement la qualité du son. En outre, la première membrane annulaire, la deuxième membrane annulaire, le dôme annulaire, le cadre inférieur et le couvercle supérieur sont intégralement enfermés pour former un espace étanche afin d'assurer l'étanchéité.
PCT/CN2019/090023 2019-05-10 2019-06-04 Haut-parleur WO2020228079A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910387728.7 2019-05-10
CN201910387728 2019-05-10

Publications (1)

Publication Number Publication Date
WO2020228079A1 true WO2020228079A1 (fr) 2020-11-19

Family

ID=67450376

Family Applications (5)

Application Number Title Priority Date Filing Date
PCT/CN2019/086980 WO2020227956A1 (fr) 2019-05-10 2019-05-15 Système de circuit magnétique et haut-parleur l'utilisant
PCT/CN2019/090026 WO2020228081A1 (fr) 2019-05-10 2019-06-04 Haut-parleur
PCT/CN2019/090023 WO2020228079A1 (fr) 2019-05-10 2019-06-04 Haut-parleur
PCT/CN2019/090024 WO2020228080A1 (fr) 2019-05-10 2019-06-04 Haut-parleur
PCT/CN2019/129411 WO2020228341A1 (fr) 2019-05-10 2019-12-27 Dispositif de génération de son

Family Applications Before (2)

Application Number Title Priority Date Filing Date
PCT/CN2019/086980 WO2020227956A1 (fr) 2019-05-10 2019-05-15 Système de circuit magnétique et haut-parleur l'utilisant
PCT/CN2019/090026 WO2020228081A1 (fr) 2019-05-10 2019-06-04 Haut-parleur

Family Applications After (2)

Application Number Title Priority Date Filing Date
PCT/CN2019/090024 WO2020228080A1 (fr) 2019-05-10 2019-06-04 Haut-parleur
PCT/CN2019/129411 WO2020228341A1 (fr) 2019-05-10 2019-12-27 Dispositif de génération de son

Country Status (2)

Country Link
CN (5) CN110149579B (fr)
WO (5) WO2020227956A1 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
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WO2020227956A1 (fr) * 2019-05-10 2020-11-19 瑞声声学科技(深圳)有限公司 Système de circuit magnétique et haut-parleur l'utilisant
CN111405422B (zh) * 2019-11-21 2021-11-12 瑞声科技(新加坡)有限公司 发声器件
WO2021128048A1 (fr) * 2019-12-25 2021-07-01 瑞声声学科技(深圳)有限公司 Dispositif de production de son
WO2021128330A1 (fr) * 2019-12-27 2021-07-01 瑞声声学科技(深圳)有限公司 Dispositif de génération de son
WO2021128332A1 (fr) * 2019-12-27 2021-07-01 瑞声声学科技(深圳)有限公司 Dispositif de production de son
WO2021134185A1 (fr) * 2019-12-30 2021-07-08 瑞声声学科技(深圳)有限公司 Dispositif de production de son
WO2021134184A1 (fr) * 2019-12-30 2021-07-08 瑞声声学科技(深圳)有限公司 Dispositif de production sonore
CN212034341U (zh) * 2020-05-20 2020-11-27 瑞声光电科技(常州)有限公司 一种扬声器
CN212034339U (zh) * 2020-05-20 2020-11-27 瑞声光电科技(常州)有限公司 一种扬声器
CN111901732B (zh) * 2020-06-24 2021-04-27 瑞声科技(新加坡)有限公司 一种扬声器
CN212486779U (zh) * 2020-06-30 2021-02-05 瑞声科技(新加坡)有限公司 一种扬声器
CN213462308U (zh) * 2020-07-06 2021-06-15 瑞声科技(新加坡)有限公司 扬声器
CN212785823U (zh) * 2020-07-06 2021-03-23 瑞声科技(新加坡)有限公司 一种发声器件
CN112073882A (zh) * 2020-09-11 2020-12-11 常州市润蒙声学科技有限公司 一种双驱动双面发声的扬声器
CN112165675B (zh) * 2020-10-22 2021-09-24 瑞声新能源发展(常州)有限公司科教城分公司 扬声器
CN112511958B (zh) * 2020-12-18 2021-11-16 瑞声新能源发展(常州)有限公司科教城分公司 发声装置
CN213846499U (zh) * 2020-12-30 2021-07-30 歌尔股份有限公司 激励器及电子产品
CN114866924B (zh) * 2022-05-07 2024-07-30 歌尔股份有限公司 发声装置和电子终端
CN115002628A (zh) * 2022-05-31 2022-09-02 厦门东声电子有限公司 一种双振膜结构的扬声器及其电子产品
CN116887145B (zh) * 2023-08-10 2024-01-26 汉得利（常州）电子股份有限公司 一种磁路结构及双面扬声器

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