WO2021114070A1 - Noyau d'écouteur et écouteur - Google Patents

Noyau d'écouteur et écouteur Download PDF

Info

Publication number
WO2021114070A1
WO2021114070A1 PCT/CN2019/124243 CN2019124243W WO2021114070A1 WO 2021114070 A1 WO2021114070 A1 WO 2021114070A1 CN 2019124243 W CN2019124243 W CN 2019124243W WO 2021114070 A1 WO2021114070 A1 WO 2021114070A1
Authority
WO
WIPO (PCT)
Prior art keywords
earphone
notch
diaphragm
earphone core
welding
Prior art date
Application number
PCT/CN2019/124243
Other languages
English (en)
Chinese (zh)
Inventor
董献杰
张龙
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
Priority to PCT/CN2019/124243 priority Critical patent/WO2021114070A1/fr
Publication of WO2021114070A1 publication Critical patent/WO2021114070A1/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • 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

Definitions

  • the utility model relates to the technical field of electroacoustic energy conversion, in particular to an earphone core and earphones.
  • the purpose of the utility model is to provide an earphone core and earphones, so as to solve the problem that the magnetic circuit shape needs to be retracted in order to satisfy the spot welding space in the prior art, and the magnetic circuit system cannot be maximized and the earphone performance is reduced.
  • a headphone core includes: a basin frame with a containing space, a vibration system contained in the containing space, and a magnetic circuit system for driving the vibration system to emit sound;
  • the basin frame includes a fixed connection with the vibration system
  • the magnetic circuit system includes a magnetic bowl held on the extension part
  • the vibration system includes a magnetic bowl held on the main part
  • the earphone core also includes a flexible circuit board electrically connected to the voice coil, and the flexible circuit board includes the voice coil
  • the orthographic projection of the vibration direction at least partially overlaps the extension portion, and the extension portion is provided with a welding notch corresponding to the pad portion.
  • the basin frame further includes a retaining wall extending from a side of the extension portion away from the diaphragm in a direction away from the diaphragm, and the retaining wall surrounds the magnetic bowl and is spaced apart from the magnetic bowl.
  • the retaining wall is provided with an avoidance notch corresponding to the welding notch.
  • the earphone core further includes a breathable damping member for covering the avoidance gap.
  • the extension portion further includes a leakage hole provided on a side of the extension portion away from the magnetic bowl, and the breathable damping member includes a first cover portion for covering the leakage hole and a first covering portion for covering the leakage hole.
  • the second covering portion of the avoiding gap, the second covering portion extends from the first covering portion to the avoiding gap to cover the welding gap.
  • the bottom surface of the avoidance notch is flush with the surface of the extension part.
  • peripheral wall of the magnetic bowl is provided with a positioning groove, and the extension portion extends toward the magnetic bowl to form a positioning boss that matches the positioning groove, and the positioning boss is separately provided on two sides of the avoiding notch. side.
  • peripheral side surface of the positioning boss is in contact with the inner wall surface of the avoiding notch.
  • the upper surface of the positioning boss is higher than the bottom surface of the groove of the avoiding notch, and the bottom surface of the avoiding notch is perpendicular to the peripheral side of the positioning boss.
  • the welding notch is arranged in a U-shaped structure, and the symmetry axis of the welding notch coincides with the symmetry axis of the land portion.
  • a headset includes the aforementioned headset core.
  • the beneficial effect of the utility model is that the projection of the pad portion along the vibration direction of the diaphragm at least partially overlaps with the extension portion, and the spot welding space is increased by opening a welding gap corresponding to the pad portion in the extension portion to solve the spot welding space.
  • the protective magnetic circuit system can be fixed by the extension part, and on the other hand, the size of the magnetic circuit system can be maximized to ensure the audio performance of the earphone.
  • the use of this technical solution solves the problem that the shape of the magnetic circuit in the prior art needs to be retracted in order to meet the spot welding space, and the problem that the magnetic circuit system cannot be maximized and the performance of the earphone is reduced.
  • Figure 1 is a schematic diagram of the overall structure of an earphone core in an embodiment of the utility model
  • Fig. 2 is a schematic diagram of an exploded structure of Fig. 1;
  • Figure 3 is a schematic diagram of the structure of the basin frame
  • Figure 4 is a schematic diagram of the structure of a flexible circuit board
  • Fig. 5 is a cross-sectional view in the direction of A-A in Fig. 1;
  • Fig. 6 is a partial enlarged view of B in Fig. 5.
  • an earphone core includes: a basin frame 10 with a receiving space 10a, a vibration system 30 accommodated in the receiving space 10a, and a magnetic circuit system 20 for driving the vibration system 30 to produce sound;
  • the basin frame 10 It includes a main body portion 11 fixedly connected to the vibration system 30 and an extension portion 12 bent and extended from the main body portion 11 toward the vibration system 30;
  • the magnetic circuit system 20 includes a magnetic bowl 21 fixed on the extension portion 12, and the vibration system 30 includes The diaphragm 31 on the main body 11 and the voice coil 32 fixed on the diaphragm 31 close to the magnetic circuit system 20.
  • the earphone core also includes a flexible circuit board 50.
  • the flexible circuit board 50 includes a first fixing portion 51 fixed to the voice coil 32 , The second fixing portion 52 fixed to the basin frame 10 and the land portion 53 extending from the first fixing portion 51 toward the second fixing portion 52, and the orthographic projection of the land portion 53 along the vibration direction of the diaphragm 31 is at least partially and extended The portions 12 overlap, and the extension portion 12 is provided with a welding notch 121 corresponding to the land portion 53.
  • the projection of the pad portion 53 along the vibration direction of the diaphragm 31 at least partially overlaps the extension portion 12.
  • the extension portion 12 is provided with a welding notch 121 corresponding to the pad portion 53 to increase the spot welding space. Solve the problem of insufficient spot welding space, so as to ensure that the spot welding head can reach in and perform spot welding on the land portion 53.
  • the protective magnetic circuit system 20 can be fixed through the extension 12, and on the other hand, the size of the magnetic circuit system 20 can be maximized to ensure the audio performance of the headset. . That is to say, the use of this technical solution solves the problem that the magnetic circuit shape in the prior art needs to be retracted to meet the spot welding space, and then the problem that the magnetic circuit system 20 cannot be maximized and the performance of the earphone is reduced.
  • the basin frame 10 further includes a retaining wall 13 extending from the side of the extension portion 12 away from the diaphragm 31 in a direction away from the diaphragm 31.
  • the retaining wall 13 surrounds the magnetic bowl 21 and is spaced apart from the magnetic bowl 21, on the retaining wall 13
  • An avoidance notch 131 corresponding to the welding notch 121 is provided. By opening the avoidance notch 131 corresponding to the welding notch 121 in the retaining wall 13, sufficient space is provided for the external operation of the spot welding.
  • the earphone core further includes a breathable damping member 40 for covering the avoidance gap 121 to ensure the normal operation of the earphone core and its acoustic performance.
  • the extension portion 12 further includes a leakage hole 122 provided on the side of the extension portion 12 away from the magnetic bowl 21, and the air-permeable damping member 40 includes a first cover portion 41 for covering the leakage hole 122 and a first cover portion 41 for covering the avoidance gap 131
  • the second covering portion 42 extends from the first covering portion 41 to the avoiding notch 131 to cover the welding notch 121, see FIG. 6 for details.
  • the extension portion 12 is provided with a leakage hole 122
  • the leakage hole 122 plays a role in maintaining the air pressure balance inside and outside the sound cavity of the earphone core
  • the breathable damping member 40 includes a first cover for covering the leakage hole 122
  • the joint 41 and the second cover 42 for covering the welding notch 121 are used to ensure the acoustic performance of the speaker.
  • the bottom surface of the avoidance notch 131 is flush with the surface of the extension portion 12, so as not only to reduce the material of the breathable damping member 40, but also to ensure the cooperation of the second covering portion 41 with the welding notch 121.
  • the magnetic circuit system 20 includes a magnetic bowl 21 and a magnet assembly 22.
  • the magnet assembly 22 includes a first magnetic steel 221, a pole core 223, and a second magnetic steel 222 that are sequentially housed in the magnetic bowl 21;
  • the peripheral wall of 21 is provided with a positioning groove 211, and the extension 12 extends toward the magnetic bowl 21 to form a positioning boss 123 that matches with the positioning groove 211.
  • the magnetic bowl 21 is clamped on the positioning boss 123 through the positioning groove 211 to realize the entire magnetic circuit system. 20 and the fixing of the basin frame 10.
  • the positioning bosses 123 are separately provided on both sides of the welding notch 121 to preliminarily limit the operating range of spot welding.
  • the peripheral side surface of the positioning boss 123 is connected to the inner wall surface of the welding notch 121, so that the spot welding space formed by the welding notch 121 is more clear with respect to the land portion 53, which not only ensures sufficient spot welding space, but also supports spot welding operations.
  • the scope is further restricted.
  • the upper surface of the positioning boss 123 is higher than the bottom surface of the avoiding notch 131, and the bottom surface of the avoiding notch 131 is perpendicular to the peripheral side of the positioning boss 123.
  • the magnetic bowl 21 abuts on the positioning boss 123, a part of the welding notch 121 is covered by the magnetic bowl 21, and the other part of the welding notch 121 is covered by the breathable damping member 40; on the other hand, the positioning boss
  • the upper surface of 123 is higher than the bottom surface of the groove of the avoiding notch 131, and the position of the breathable damping member 40 can be restricted.
  • the welding notch 121 is arranged in a U-shaped structure, and the symmetry axis of the welding notch 121 coincides with the symmetry axis of the land portion 53.
  • the spatial position of the welding notch 121 is reasonably set relative to the land portion 53 so that the land portion 53 can be located in the middle of the spot welding space formed by the welding notch 121, which facilitates the subsequent spot welding work to proceed smoothly.
  • the extension portion 11 is provided with leakage holes 122 on both sides of the welding notch 121, and the two leakage holes 122 are relatively spaced with respect to the center line of the symmetry axis of the welding notch 121.
  • the leakage hole 122 plays a role in maintaining the balance of the internal and external air pressure in the sound cavity of the earphone core.
  • the leakage hole 122 is arranged on both sides of the welding notch 121 at a relative interval with the symmetry axis of the welding notch 121 as the center line, which can ensure that the leakage hole 122 is in the basin.
  • the frame 10 is uniformly arranged on the main body, while maintaining the stability of the main body of the basin frame 10 at the position of the welding notch 121, thereby ensuring the structural stability of the entire earphone core.
  • This embodiment also provides an earphone.
  • the earphone includes the earphone core as described above.
  • the earphone core increases the spot welding space by opening a welding notch 121 in the extension part 12, and sets the shape and spatial position of the welding notch 121 , To facilitate the spot welding work.
  • the welding gap 121 is covered by the second cover portion 42 of the breathable damping member 40, which effectively solves the need for the magnetic circuit to shrink in order to meet the spot welding space.
  • the magnetic circuit system 20 cannot be maximized and the performance of the earphone is reduced. Therefore, the sound quality performance of the earphone has also been improved, which meets people's increasing performance requirements for earphones.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)

Abstract

Sont concernés par la présente demande un noyau d'écouteur et un écouteur. Le noyau d'écouteur comprend : un cadre de bassin, un système de vibration, et un système de circuit magnétique. Le cadre de bassin comprend une partie de corps principal reliée de manière fixe au système de vibration et une partie d'extension qui est courbée et étirée à partir de la partie de corps principal vers le système de vibration. Le système de circuit magnétique comprend un bol magnétique fixé sur la partie d'extension Le système de vibration comprend un diaphragme fixé sur la partie de corps principal et une bobine acoustique fixée sur le côté du diaphragme à proximité du système de circuit magnétique. Le noyau d'écouteur comprend en outre une carte de circuit imprimé souple connectée électriquement à la bobine acoustique. La carte de circuit imprimé souple comprend une première partie de fixation fixée à la bobine acoustique, une seconde partie de fixation fixée au cadre de bassin, et une partie tampon formée s'étendant de la première partie de fixation à la seconde partie de fixation La projection orthographique de la partie tampon le long de la direction de vibration du diaphragme chevauche au moins partiellement la partie d'extension La partie d'extension est pourvue d'un espace de soudage correspondant à la partie de plot. La présente solution technique résout les problèmes de l'état de la technique dans lesquels la forme extérieure du circuit magnétique doit rétrécir afin de satisfaire un espace de soudage par points, et par conséquent le système de circuit magnétique ne peut pas être maximisé et la performance de l'écouteur est réduite.
PCT/CN2019/124243 2019-12-10 2019-12-10 Noyau d'écouteur et écouteur WO2021114070A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/124243 WO2021114070A1 (fr) 2019-12-10 2019-12-10 Noyau d'écouteur et écouteur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/124243 WO2021114070A1 (fr) 2019-12-10 2019-12-10 Noyau d'écouteur et écouteur

Publications (1)

Publication Number Publication Date
WO2021114070A1 true WO2021114070A1 (fr) 2021-06-17

Family

ID=76329322

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/124243 WO2021114070A1 (fr) 2019-12-10 2019-12-10 Noyau d'écouteur et écouteur

Country Status (1)

Country Link
WO (1) WO2021114070A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202103832U (zh) * 2011-05-31 2012-01-04 常州美欧电子有限公司 发声器件
CN209390360U (zh) * 2018-12-31 2019-09-13 瑞声科技(新加坡)有限公司 耳机芯
CN209526873U (zh) * 2018-12-30 2019-10-22 瑞声科技(新加坡)有限公司 扬声器
CN209526841U (zh) * 2018-12-30 2019-10-22 瑞声科技(新加坡)有限公司 扬声器和耳机
CN210986376U (zh) * 2019-12-10 2020-07-10 瑞声科技(新加坡)有限公司 一种耳机芯及耳机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202103832U (zh) * 2011-05-31 2012-01-04 常州美欧电子有限公司 发声器件
CN209526873U (zh) * 2018-12-30 2019-10-22 瑞声科技(新加坡)有限公司 扬声器
CN209526841U (zh) * 2018-12-30 2019-10-22 瑞声科技(新加坡)有限公司 扬声器和耳机
CN209390360U (zh) * 2018-12-31 2019-09-13 瑞声科技(新加坡)有限公司 耳机芯
CN210986376U (zh) * 2019-12-10 2020-07-10 瑞声科技(新加坡)有限公司 一种耳机芯及耳机

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