WO2021119918A1 - Membrane vibrante et haut-parleur - Google Patents

Membrane vibrante et haut-parleur Download PDF

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Publication number
WO2021119918A1
WO2021119918A1 PCT/CN2019/125642 CN2019125642W WO2021119918A1 WO 2021119918 A1 WO2021119918 A1 WO 2021119918A1 CN 2019125642 W CN2019125642 W CN 2019125642W WO 2021119918 A1 WO2021119918 A1 WO 2021119918A1
Authority
WO
WIPO (PCT)
Prior art keywords
thickness
bending
dome
diaphragm
side edge
Prior art date
Application number
PCT/CN2019/125642
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
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/CN2019/125642 priority Critical patent/WO2021119918A1/fr
Publication of WO2021119918A1 publication Critical patent/WO2021119918A1/fr

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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

Definitions

  • the utility model belongs to the technical field of electroacoustics, and particularly relates to a diaphragm and a loudspeaker.
  • the purpose of the utility model is to provide a diaphragm, which aims to improve the structural strength of the outer side of the bending part of the bend ring corresponding to the corner of the dome on the diaphragm and improve the product performance.
  • a diaphragm which includes a dome at the center position and a folding ring part arranged around the outer side of the dome, and the folding ring part includes a fixed connection with the edge of the dome
  • the dome includes two opposite first sides Side, two opposing second side sides, and a corner portion connecting the adjacent first side side and the second side side
  • the bent portion includes a direction away from the ball from the inner connecting portion
  • the inner bending portion bent and extending on the plane where the top is located and the outer bending portion connected between the inner bending portion and the outer connecting portion, the thickness of the inner bending portion corresponding to the corner portion is less than The thickness of the adjacent outer bending part.
  • the thickness of the inner bending portion corresponding to the first side is equal to the thickness of the outer bending portion corresponding to the first side.
  • the thickness of the inner bending portion corresponding to the second side edge is equal to the thickness of the outer bending portion corresponding to the second side edge.
  • bent portions corresponding to the first side edge and the second side edge respectively have an equal-thickness structure with a first thickness
  • the outer bent portion corresponding to the corner portion The thickness of is also the first thickness
  • bent portions corresponding to the first side edge and the second side edge respectively have an equal-thickness structure with a first thickness
  • the inner bent portion corresponding to the corner portion The thickness of is also the first thickness
  • the thickness of the outer bending portion corresponding to the corner portion and the thickness of the adjacent inner bending portion transition in a gradual manner.
  • folding ring portion and the dome are an integral structure or a split structure.
  • the vibration membrane is a rubber membrane, a PEEK membrane or a TPU membrane.
  • the dome is a rectangle with rounded corners, and the inner bending part and the outer bending part form an arc transition.
  • a speaker including a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system, the vibration system comprising a diaphragm fixed on the top of the basin frame, the diaphragm being any one of the above In the diaphragm, the outer connecting portion is fixed to the basin frame, and the inner bent portion extends from the inner connecting portion in a direction away from the magnetic circuit system.
  • the beneficial effect of the utility model lies in that: the utility model designs the thickness of the bending part of the bend ring corresponding to the dome corner on the vibrating membrane to be thick outside and thin in the inside, which can significantly improve the rigidity of the position and improve the contact with the corner of the dome.
  • the outer side of the diaphragm Corresponding to the structural strength of the outer side of the bending part of the bending ring, it can improve the problem that the outer side of the diaphragm is easy to be folded when the diaphragm is vibrated up and down, and improve the pure sound of the product; and because the thickness of the diaphragm is only partially changed, the overall weight of the diaphragm will not be excessively changed to ensure Resonance frequency, sound pressure level and other performance changes are small; not only that, it can also increase the product's upper amplitude, suppress the lower amplitude, and simultaneously optimize the problem of asymmetrical deviation of the highest point of the upper and lower amplitude, improve product swing and reduce distortion.
  • Figure 1 is a schematic diagram of the overall structure of a diaphragm provided by an embodiment of the present invention
  • Figure 2 is a schematic top view of the structure of the loudspeaker provided by the embodiment of the present invention.
  • Fig. 3 is a schematic diagram of an exploded structure of a speaker provided by an embodiment of the present invention.
  • Fig. 4 is a schematic cross-sectional view taken along the A-A direction of Fig. 2;
  • Fig. 5 is a schematic cross-sectional view taken along the B-B direction of Fig. 2;
  • Fig. 6 is a schematic cross-sectional view taken along the C-C direction of Fig. 2;
  • FIG. 7 is a schematic diagram of an enlarged structure of part D in FIG. 6.
  • the diaphragm 21 includes a dome 212 located in the center and a folding ring portion arranged around the outer side of the dome 212 211.
  • the folding ring portion 211 includes an inner connecting portion 2111 fixedly connected to the edge of the dome 212, an outer connecting portion 2113 spaced apart from the inner connecting portion 2111, and a bending portion connected between the inner connecting portion 2111 and the outer connecting portion 2113 2112.
  • the dome 212 includes two opposite first sides 2121, two opposite second sides 2122, and a corner 2123 connecting the adjacent first side 2121 and the second side 2122.
  • the bending portion 2112 includes an inner bending portion 21122 bent and extending from the inner connecting portion 2111 toward a plane away from the dome 212, and connected between the inner bending portion 21122 and the outer connecting portion 2113
  • the thickness of the outer bending portion 21121 of the inner bending portion 21122 corresponding to the corner portion 2123 is smaller than the thickness of the adjacent outer bending portion 21121. That is to say, the thickness of the bent portion 2112 corresponding to the corner 2123 is designed to be thick on the outside and thin on the inside, which can significantly improve the rigidity of the position, improve the structural strength of the outer bent portion 21121, and improve the easy bending of the outer side when the diaphragm 21 vibrates up and down. To improve the product pure tone.
  • the overall weight of the diaphragm 21 will not be excessively changed, ensuring small changes in performance such as resonance frequency, sound pressure level, etc.; not only that, it can also increase the upper amplitude of the product and suppress the lower amplitude , Synchronously optimize the problem of asymmetrical deviation of the highest point of the upper and lower amplitude, improve product swing and reduce distortion.
  • the thickness of the inner bending portion 21122 corresponding to the first side 2121 is equal to the thickness of the outer bending portion 21121 corresponding to the first side 2121, and the inner bending portion 21121 corresponding to the second side 2122 has the same thickness.
  • the thickness of the bent portion 21122 is equal to the thickness of the outer bent portion 21121 corresponding to the second side 2122.
  • only the thickness of the bending portion 2112 corresponding to the corner portion 2123 is changed, and the thickness of the bending portion 2112 corresponding to the first side 2121 and the second side 2122 remains unchanged, so the diaphragm will not be changed excessively. 21
  • the overall weight, resonance frequency, sound pressure level and other performance changes are small.
  • the bent portions 2112 corresponding to the first side 2121 and the second side 2122 respectively are of equal-thickness structure with the first thickness, corresponding to the corner 2123
  • the thickness of the outer bending portion 21121 is also the first thickness, that is, the thickness of the inner bending portion 21122 corresponding to the corner portion 2123 is reduced relative to the first thickness.
  • the bent portions 2112 corresponding to the first side 2121 and the second side 2122 respectively have an equal-thickness structure with the first thickness, and the inner bent portion 21122 corresponding to the corner 2123
  • the thickness of is also the first thickness, that is, the thickness of the outer bent portion 21121 corresponding to the corner portion 2123 is thicker than the first thickness.
  • the thickness of the outer bending portion 21121 corresponding to the corner portion 2123 and the thickness of the adjacent inner bending portion 21122 transition in a gradual manner, and the specific thickness variation range and the starting point position are not limited, and can be Adjust according to actual needs.
  • the folding ring portion 211 and the dome 212 of this embodiment are separate structures. In other embodiments, the folding ring portion 211 and the dome 212 may also be an integral structure.
  • the material of the diaphragm 21 in this embodiment is a polymer material, specifically, it may be a rubber film, a PEEK film or a TPU film.
  • the dome 212 of this embodiment is a rectangle with rounded corners, and the inner bending portion 21122 and the outer bending portion 21121 transition in an arc shape. Of course, the dome 212 may also have other shapes, and the shape of the dome 212 is not limited.
  • the embodiment of the present invention also provides a speaker.
  • the speaker includes a basin frame 10, a vibration system 20 fixed to the basin frame 10, and a magnetic circuit system 30.
  • the vibration system 20 includes a frame fixed to the basin frame.
  • the diaphragm 21 at the top of 10 is the diaphragm 21 in the above technical solution.
  • the outer connecting portion 2113 is fixed to the frame 10, and the inner bent portion 21122 extends from the inner connecting portion 2111 in a direction away from the magnetic circuit system 30.
  • the vibration system 20 also includes a voice coil 22 connected to one side of the diaphragm 21 and driving the diaphragm 21 to vibrate, a circuit board 23 connected to the end of the voice coil 22 away from the diaphragm 21, and two lower sound diaphragms corresponding to the diaphragm 21 twenty four.
  • the basin frame 10 and the diaphragm 21 are bonded and fixed by a glue layer 40.
  • the magnetic circuit system 30 includes a main magnet 31, auxiliary magnets 32 located on both sides of the main magnet 31, and pole cores 33 attached to the main magnet 31.
  • the auxiliary magnets 32 are arranged at intervals on the main magnet. 31, and form a magnetic gap with the main magnet 31, the voice coil 22 is fixedly arranged in the magnetic gap,
  • the magnetic circuit system 30 also includes a yoke 35 for fixing the main magnet 31 and the auxiliary magnet 32, and the magnetic The magnetic conductive plate 36 opposite to the yoke 35 is embedded and fixed on the basin frame 10.
  • An adhesive layer 34 is provided between the main magnet 31 and the pole core 33, between the main magnet 31 and the yoke 35, between the auxiliary magnet 32 and the yoke 35, and between the auxiliary magnet 32 and the magnetic conductive plate 36. .
  • the pole core 33 attached to the surface of the main magnetic steel 31 can play a role in guiding magnetism, converge the magnetic field, and improve the magnetic induction performance of the product.

Landscapes

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

Abstract

Le présent modèle d'utilité concerne une membrane vibration et un haut-parleur. La membrane vibrante comprend un dôme situé au niveau de la position centrale et une partie bague de cintrage entourant le côté extérieur du dôme ; la partie bague de cintrage comprend une partie de raccordement interne reliée de manière fixe au bord du dôme, une partie de raccordement extérieure disposée à un intervalle avec la partie de raccordement intérieure, et une partie de courbure reliant la partie de raccordement intérieure et la partie de raccordement extérieure ; le dôme comprend deux premiers bords latéraux disposés de manière opposée, deux seconds bords latéraux disposés de façon opposée et des parties de coin reliant les premiers bords latéraux et les seconds bords latéraux adjacents ; la partie de courbure comprend une partie de courbure interne se courbant et s'étendant de la partie de raccordement interne à une position éloignée du plan où se trouve le dôme et une partie de courbure externe reliant entre la partie de courbure interne et la partie de liaison externe, l'épaisseur de la partie de courbure interne correspondant à la partie d'angle étant inférieure à celle de la partie de courbure externe adjacente. Le présent modèle d'utilité améliore la résistance structurale du côté extérieur de la partie de courbure de la bague de cintrage correspondant à la partie d'angle du dôme, résout le problème dans lequel le côté extérieur se plie facilement lorsque la membrane vibrante vibre de haut en bas, et améliore les performances acoustiques.
PCT/CN2019/125642 2019-12-16 2019-12-16 Membrane vibrante et haut-parleur WO2021119918A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/125642 WO2021119918A1 (fr) 2019-12-16 2019-12-16 Membrane vibrante et haut-parleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/125642 WO2021119918A1 (fr) 2019-12-16 2019-12-16 Membrane vibrante et haut-parleur

Publications (1)

Publication Number Publication Date
WO2021119918A1 true WO2021119918A1 (fr) 2021-06-24

Family

ID=76478073

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/125642 WO2021119918A1 (fr) 2019-12-16 2019-12-16 Membrane vibrante et haut-parleur

Country Status (1)

Country Link
WO (1) WO2021119918A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6176345B1 (en) * 1997-07-18 2001-01-23 Mackie Designs Inc. Pistonic motion, large excursion passive radiator
CN207135272U (zh) * 2017-08-31 2018-03-23 歌尔科技有限公司 振膜及设有该振膜的扬声器
CN208638573U (zh) * 2018-08-02 2019-03-22 瑞声科技(新加坡)有限公司 一种振膜及具有该振膜的扬声器
CN109819378A (zh) * 2018-12-30 2019-05-28 瑞声声学科技(深圳)有限公司 发声装置
CN110191401A (zh) * 2019-05-09 2019-08-30 瑞声光电科技(常州)有限公司 振膜及发声器件

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6176345B1 (en) * 1997-07-18 2001-01-23 Mackie Designs Inc. Pistonic motion, large excursion passive radiator
CN207135272U (zh) * 2017-08-31 2018-03-23 歌尔科技有限公司 振膜及设有该振膜的扬声器
CN208638573U (zh) * 2018-08-02 2019-03-22 瑞声科技(新加坡)有限公司 一种振膜及具有该振膜的扬声器
CN109819378A (zh) * 2018-12-30 2019-05-28 瑞声声学科技(深圳)有限公司 发声装置
CN110191401A (zh) * 2019-05-09 2019-08-30 瑞声光电科技(常州)有限公司 振膜及发声器件

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