WO2021134192A1 - Membrane et dispositif de génération de son - Google Patents

Membrane et dispositif de génération de son Download PDF

Info

Publication number
WO2021134192A1
WO2021134192A1 PCT/CN2019/129878 CN2019129878W WO2021134192A1 WO 2021134192 A1 WO2021134192 A1 WO 2021134192A1 CN 2019129878 W CN2019129878 W CN 2019129878W WO 2021134192 A1 WO2021134192 A1 WO 2021134192A1
Authority
WO
WIPO (PCT)
Prior art keywords
folding ring
ring
diaphragm
folding
pattern mold
Prior art date
Application number
PCT/CN2019/129878
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/CN2019/129878 priority Critical patent/WO2021134192A1/fr
Publication of WO2021134192A1 publication Critical patent/WO2021134192A1/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

Definitions

  • the utility model relates to the field of electro-acoustic conversion, in particular to a diaphragm and a sound device using the diaphragm.
  • a related art sounding device includes a basin frame, a diaphragm supported on the basin frame, and a voice coil that drives the diaphragm to vibrate.
  • the diaphragm includes a central part and a folding ring part extending from the central part and surrounding the central part.
  • the cross section of the folded ring portion is in an arc structure, and the upper and lower surfaces of the folded ring portion are both smooth surface structures.
  • This structure prevents the acoustic performance of the diaphragm from being further improved. When the diaphragm vibrates, it may swing, which may cause noise or even distortion, and cause the acoustic performance of the sound emitting device to be limited.
  • the present invention provides a diaphragm, which includes a central part and a folding ring part extending from the central part and surrounding the central part.
  • the folding ring part includes an upper surface of the folding ring and a contact surface.
  • the upper surface of the folding ring is opposite to the lower surface of the folding ring; the diaphragm also includes an upper pattern mold portion formed by the convex or concave upper surface of the folding ring and a lower surface formed by the convex or concave lower surface of the folding ring
  • the pattern mold portion, the upper pattern mold portion includes a plurality of upper characteristic patterns arranged at intervals along the circumferential direction of the folded ring portion, and the lower pattern mold portion includes a plurality of upper characteristic patterns arranged at intervals along the circumferential direction of the folded ring portion.
  • Lower characteristic pattern; the projection of the upper characteristic pattern along the thickness direction of the folded ring portion and the projection of the lower characteristic pattern along the thickness direction of the folded ring portion have no overlap.
  • a plurality of the upper characteristic graphics are arranged in a fan shape, and a plurality of the lower characteristic graphics are arranged in a fan shape.
  • the folding ring portion includes a plurality of first connecting portions respectively located on the upper surface of the folding ring and spaced apart from each other, and a plurality of second connecting portions respectively located on the lower surface of the folding ring and spaced apart from each other; each A first connecting portion connects the two adjacent upper characteristic patterns, and the projected area of the first connecting portion along the thickness direction of the folded ring portion is equal to all the first connecting portion disposed opposite to the first connecting portion.
  • each of the second connecting portions will connect two adjacent lower characteristic patterns with it, and the second connecting portion is along the folded ring
  • the projected area in the thickness direction of the part is equal to the projected area of the upper characteristic pattern disposed opposite to the second connecting part in the thickness direction of the folded ring part.
  • the folding ring portion has a rounded rectangular structure
  • the upper pattern mold portion includes four and is located at the four rounded positions of the folding ring portion
  • the lower pattern mold portion includes four and is located respectively. The positions of the four rounded corners of the folded ring portion.
  • the upper pattern mold portion is formed by protruding from the upper surface of the folding ring in a direction away from the lower surface of the folding ring; the lower pattern mold portion faces the upper surface of the folding ring from the lower surface of the folding ring The depression is formed.
  • the upper pattern mold portion is formed by recessing the upper surface of the folding ring toward the lower surface of the folding ring; the lower pattern mold portion is convex from the lower surface of the folding ring in a direction away from the upper surface of the folding ring. Out of formation.
  • the upper pattern mold portion is formed by the upper surface of the folding ring protruding away from the lower surface of the folding ring; the lower pattern mold portion is formed by the lower surface of the folding ring away from the upper surface of the folding ring The direction is convex.
  • the upper pattern mold portion is formed by recessing the upper surface of the folding ring toward the lower surface of the folding ring; the lower pattern mold portion is formed by recessing the lower surface of the folding ring toward the upper surface of the folding ring. .
  • the upper characteristic pattern has a strip-shaped structure and spans the folded ring portion; the lower characteristic pattern has a strip-shaped structure and spans the folded ring portion.
  • the diaphragm provided by the present utility model is provided with a convex or concave upper pattern forming part on the upper surface of the folding ring of the folding ring and a convex or concave forming part on the lower surface of the folding ring.
  • a lower pattern mold portion, the upper pattern mold portion includes a plurality of upper characteristic patterns arranged at intervals along the circumferential direction of the folding ring portion, and the lower pattern mold portion includes a plurality of upper characteristic patterns arranged at intervals along the circumferential direction of the folded ring portion.
  • a lower characteristic pattern; the projection of the upper characteristic pattern along the thickness direction of the folded ring portion and the projection of the lower characteristic pattern along the thickness direction of the folded ring portion have no overlapping part, and the diaphragm can be adjusted and improved as needed
  • the structural strength of the diaphragm improves the problem that the R angle of the diaphragm is easily broken when the diaphragm is vibrated up and down.
  • the diaphragm When the diaphragm is used in a sound device, it effectively improves the balance and stability of the vibration of the diaphragm, and improves the pure tone and distortion of the sound device. And swing, so that the acoustic performance of the sound device is better.
  • Figure 1 is a schematic structural diagram of the first embodiment of the diaphragm of the present invention.
  • Figure 2 is a schematic cross-sectional view of the first embodiment of the diaphragm of the present invention.
  • Fig. 3 is an enlarged view of the part shown in A in Fig. 2;
  • Figure 4 is a schematic structural diagram of the second embodiment of the diaphragm of the present invention.
  • Figure 5 is a schematic cross-sectional view of the second embodiment of the diaphragm of the present invention.
  • Fig. 6 is an enlarged view of the part shown in B in Fig. 5;
  • Figure 7 is a schematic structural diagram of the third embodiment of the diaphragm of the present invention.
  • Figure 8 is a schematic cross-sectional view of the third embodiment of the diaphragm of the present invention.
  • Fig. 9 is an enlarged view of the part shown in C in Fig. 8;
  • Figure 10 is a schematic structural diagram of the fourth embodiment of the diaphragm of the present invention.
  • FIG. 11 is a schematic cross-sectional view of the fourth embodiment of the diaphragm of the utility model
  • Figure 12 is an enlarged view of the part shown in D in Figure 11;
  • Figure 13 is an exploded schematic diagram of a part of the structure of the sound generating device of the present invention.
  • the present invention provides a diaphragm 10, which includes a central portion 1 and a folding ring portion 2 extending from the central portion 1 and surrounding the central portion 1.
  • the central portion 1 is used for vibrating and sounding, and the folded ring portion 2 is used for providing elastic supporting force for the central portion 1 to achieve the required amplitude of the central portion 1 when it vibrates.
  • the folding ring portion 2 includes a folding ring upper surface 21 and a folding ring lower surface 22 opposite to the folding ring upper surface 21.
  • the diaphragm 10 further includes an upper pattern mold formed by the convex or concave surface 21 of the folding ring.
  • Portion 23 and a lower pattern mold portion 24 formed by protruding or recessing the lower surface 22 of the folding ring, that is, the upper pattern mold portion 23 and the lower pattern mold portion 24 are respectively formed on the opposite side of the folding ring portion 2.
  • the upper pattern mold portion 23 includes a plurality of upper characteristic patterns 231 spaced along the circumferential direction of the folded ring portion 2, and the lower pattern mold portion 24 includes intervals along the circumferential direction of the folded ring portion 2
  • a plurality of lower characteristic patterns 241 are provided; the projection of the upper characteristic pattern 231 along the thickness direction of the folded ring portion 2 and the projection of the lower characteristic pattern 241 along the thickness direction of the folded ring portion 2 have no overlap.
  • the arrangement of multiple upper feature graphics of the same upper graphics mold and the arrangement of multiple lower feature graphics of the same lower graphics mold are not limited, which can be based on actual conditions. Specific settings are required.
  • the multiple upper feature patterns 231 of the same upper pattern mold portion 23 are arranged in a fan shape
  • the multiple upper feature patterns of the same lower pattern mold portion 24 are arranged in a fan shape.
  • 241 are arranged in a fan shape.
  • the folding ring portion 2 has a rounded rectangular structure
  • the upper pattern mold portion 23 includes four and is located at the four rounded positions of the folding ring portion 2
  • the lower pattern mold portion 24 includes four corners. And are respectively located at the four rounded corners of the folded ring portion 2.
  • the location of the structure effectively improves the problem that the rounded corners (R angles) of the diaphragm 10 are easily broken when the diaphragm 10 vibrates up and down, thereby further improving the vibration balance and stability, and improving the pure tone, distortion and swing performance of the diaphragm 10.
  • the folding ring portion 2 includes a plurality of first connecting portions 2310 respectively located on the upper surface 21 of the folding ring and spaced apart from each other, and a plurality of first connecting portions 2310 respectively located on the bottom surface 22 of the folding ring and spaced apart from each other.
  • each of the first connecting portions 2310 connects the two adjacent upper characteristic patterns 231, that is, the gap space between every two adjacent upper characteristic patterns 231 is provided with One first connecting portion 2310, and the projected area of the first connecting portion 2310 along the thickness direction of the folding ring portion 2 is equal to the lower characteristic pattern 241 disposed opposite to the first connecting portion 2310 along the folding The projected area in the thickness direction of the ring portion 2; each second connecting portion 2410 connects the two adjacent lower characteristic patterns 241, that is, the gap between every two adjacent lower characteristic patterns 241 A second connecting portion 2410 is provided in the space, and the projected area of the second connecting portion 2410 along the thickness direction of the folded ring portion 2 is equal to the upper characteristic pattern 231 disposed opposite to the second connecting portion 2410 The area projected along the thickness direction of the folded ring portion 2; through the above setting, the interval between the adjacent upper characteristic pattern 231 and the lower characteristic pattern 241 is effectively reduced, so that a plurality of the upper characteristic patterns 231 The overall arrangement of the plurality of lower characteristic patterns
  • the structure form of the upper characteristic figure and the lower characteristic figure and their specific position settings are not limited, and they can be set according to the actual use situation. For example, in this embodiment, all the positions that are set directly opposite to each other can be set.
  • the upper pattern mold portion 23 and the lower pattern mold portion 24 have the same shape; further, the upper characteristic pattern 231 has a strip-shaped structure and is horizontal. Across the folding ring portion 2, the lower characteristic pattern 241 has a strip-shaped structure and crosses the folding ring portion 2.
  • the specific shape and structure of the upper pattern mold portion 23 and the lower pattern mold portion 24 are only an example, but not limited to the above examples, as long as it satisfies the multiple upper characteristic patterns 231 of the upper pattern mold portion 23 and the lower pattern mold.
  • the multiple lower feature patterns 241 of the portion 24 are arranged alternately to achieve the purpose of the present invention.
  • the above structure does not change the overall weight of the diaphragm 10 too much, and has no significant impact on its resonance frequency F0, sound pressure level SPL and other performance.
  • the above-mentioned double-sided design of the diaphragm 10 makes a plurality of upper characteristic patterns 231 formed on the upper surface 21 of the folding ring portion 2 and a plurality of upper characteristic patterns 231 alternately arranged on the lower surface 22 of the folding ring.
  • the lower characteristic pattern 241 with flexible and diverse design methods, can be adjusted as needed to improve the structural strength of the diaphragm, effectively improve the problem of easy discount at the R angle when the diaphragm 10 vibrates up and down, and effectively improve the vibration balance of the diaphragm 10
  • the performance and stability have improved the pure tone, distortion and swing problems, and the acoustic performance is better.
  • the diaphragm 10 is made of any one material or multiple composite materials among silica gel, rubber, PEEK, and TPU. More preferably, the diaphragm 10 is an integrally formed structure.
  • the formation of the upper pattern mold portion 23 and the lower pattern mold portion 24 includes but is not limited to the following four embodiments:
  • Fig. 1(a) it is the front surface of the diaphragm 10, which corresponds to the upper surface 21 of the folding ring.
  • a plurality of upper characteristic patterns 231 of the upper pattern mold portion 23 are respectively formed by the upper surface 21 of the folding ring protruding away from the lower surface 22 of the folding ring, that is, the plurality of upper characteristic patterns 231 all have a corrugated structure across the folding ring portion 2. .
  • Fig. 1(b) it is the back surface of the diaphragm 10, which corresponds to the lower surface 22 of the folding ring.
  • the plurality of lower feature patterns 241 of the lower pattern mold portion 24 are respectively formed by recessing the lower surface 22 of the folding ring in a direction away from the upper surface 21 of the folding ring.
  • a plurality of upper characteristic patterns 231 and a plurality of lower characteristic patterns 241 located at the same rounded position of the ring portion 2 are arranged alternately.
  • Fig. 4(a) it is the front surface of the diaphragm 210, which corresponds to the upper surface 221 of the folding ring.
  • the multiple upper feature patterns 2231 of the upper pattern mold portion 223 are respectively formed by recessing the upper surface 221 of the folding ring in a direction away from the lower surface 222 of the folding ring, that is, the multiple upper characteristic patterns 2231 are formed across the folding ring portion (not shown). Slot-like structure.
  • the back surface of the diaphragm 210 which corresponds to the lower surface 222 of the folding ring.
  • the plurality of lower feature patterns 2241 of the lower pattern mold portion 224 are respectively formed by the lower surface 222 of the folding ring protruding away from the upper surface 221 of the folding ring, that is, the plurality of lower characteristic patterns 2241 all have a corrugated structure across the folding ring portion.
  • a plurality of upper feature patterns 2231 and a plurality of lower characteristic patterns 2241 located at the same fillet position of the ring portion are arranged alternately with each other.
  • Fig. 7(a) it is the front surface of the diaphragm 310, which corresponds to the upper surface 321 of the folding ring.
  • the upper characteristic patterns 3231 of the upper pattern mold part 323 are respectively formed by the upper surface 321 of the folding ring protruding away from the lower surface 322 of the folding ring, that is, the upper characteristic patterns 3231 all cross the folding ring part (not shown) Convex structure.
  • the plurality of lower feature patterns 3241 of the lower pattern mold portion 324 are respectively formed by the lower surface 322 of the folding ring protruding away from the upper surface 321 of the folding ring, that is, the plurality of lower characteristic patterns 3241 all have a corrugated structure across the folding ring portion.
  • a plurality of upper feature patterns 3231 and a plurality of lower characteristic patterns 3241 located at the same rounded position of the ring portion are arranged alternately with each other.
  • Fig. 10(a) it is the front surface of the diaphragm 410, which corresponds to the upper surface 421 of the folding ring.
  • the multiple upper feature patterns 4231 of the upper pattern mold portion 423 are respectively formed by recessing the upper surface 421 of the folding ring toward the lower surface 422 of the folding ring, that is, the multiple upper characteristic patterns 4231 are all grooves across the folding ring portion (not shown). ⁇
  • the plurality of lower feature patterns 4241 of the lower pattern mold portion 424 are respectively formed by recessing the lower surface 422 of the folding ring toward the upper surface 421 of the folding ring, that is, the plurality of lower characteristic patterns 4241 all have a groove-like structure across the folding ring portion.
  • a plurality of upper feature patterns 4231 and a plurality of lower characteristic patterns 4241 located at the same rounded position of the ring portion are arranged alternately with each other.
  • the present invention provides a sound emitting device 100, and the sound emitting device 100 includes the above-mentioned diaphragm 10.
  • the sound emitting device 100 includes a basin frame 20, the diaphragm 10 fixedly supported on the basin frame 20, a voice coil 30 that drives the diaphragm 10 to vibrate and produce sound, and a magnetic frame fixed to the basin frame 20.
  • Road system 40 the sound emitting device 100 includes a basin frame 20, the diaphragm 10 fixedly supported on the basin frame 20, a voice coil 30 that drives the diaphragm 10 to vibrate and produce sound, and a magnetic frame fixed to the basin frame 20.
  • Road system 40 the sound emitting device 100 includes a basin frame 20, the diaphragm 10 fixedly supported on the basin frame 20, a voice coil 30 that drives the diaphragm 10 to vibrate and produce sound.
  • the basin frame 20 is used to fix and support the diaphragm 10 and the magnetic circuit system 40.
  • the voice coil 30 is fixed to the diaphragm 10, the electric field generated by the voice coil 30 and the magnetic field generated by the magnetic circuit system 40 work together to form an electromagnetic field, so that the voice coil 30 moves up and down repeatedly, and then passes through the The voice coil 30 drives the diaphragm 10 to vibrate and produce sound.
  • the diaphragm provided by the present utility model is provided with a convex or concave upper pattern forming part on the upper surface of the folding ring of the folding ring and a convex or concave forming part on the lower surface of the folding ring.
  • a lower pattern mold portion, the upper pattern mold portion includes a plurality of upper characteristic patterns arranged at intervals along the circumferential direction of the folding ring portion, and the lower pattern mold portion includes a plurality of upper characteristic patterns arranged at intervals along the circumferential direction of the folded ring portion.
  • a lower characteristic pattern; the projection of the upper characteristic pattern along the thickness direction of the folded ring portion and the projection of the lower characteristic pattern along the thickness direction of the folded ring portion have no overlapping part, and the diaphragm can be adjusted and improved as needed
  • the structural strength of the diaphragm improves the problem that the R angle of the diaphragm is easily broken when the diaphragm is vibrated up and down.
  • the diaphragm When the diaphragm is used in a sound device, it effectively improves the balance and stability of the vibration of the diaphragm, and improves the pure tone and distortion of the sound device. And swing, so that the acoustic performance of the sound device is better.

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

Abstract

Le modèle d'utilité divulgue une membrane, comprenant une partie centrale et une partie périphérique s'étendant à partir de la partie centrale et disposée autour de la partie centrale. La partie périphérique comprend une surface supérieure périphérique et une surface inférieure périphérique opposée à la surface supérieure périphérique. La membrane comprend en outre une partie de moule de motif supérieur formée en saillie ou en creux à partir de la surface supérieure périphérique, et une partie de moule de motif inférieur formée en saillie ou en creux à partir de la surface inférieure périphérique. La partie de moule de motif supérieur comprend une pluralité de motifs caractéristiques supérieurs disposés à des intervalles le long de la direction circonférentielle de la partie périphérique, et la partie de moule de motif inférieur comprend une pluralité de motifs caractéristiques inférieurs agencés à des intervalles le long de la direction circonférentielle de la partie périphérique. Il n'y a pas de chevauchement entre la projection de chaque motif caractéristique supérieur le long de la direction d'épaisseur de la partie périphérique et la projection de chaque motif caractéristique inférieur le long de la direction d'épaisseur de la partie périphérique. Le modèle d'utilité concerne également un dispositif de génération de son utilisant la membrane. Par rapport à l'état de la technique associé, le dispositif de génération de son du présent modèle d'utilité présente une bonne stabilité et de meilleures performances acoustiques.
PCT/CN2019/129878 2019-12-30 2019-12-30 Membrane et dispositif de génération de son WO2021134192A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/129878 WO2021134192A1 (fr) 2019-12-30 2019-12-30 Membrane et dispositif de génération de son

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/129878 WO2021134192A1 (fr) 2019-12-30 2019-12-30 Membrane et dispositif de génération de son

Publications (1)

Publication Number Publication Date
WO2021134192A1 true WO2021134192A1 (fr) 2021-07-08

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007135746A1 (fr) * 2006-05-24 2007-11-29 Pioneer Corporation Dispositif haut-parleur
CN206923033U (zh) * 2017-06-20 2018-01-23 瑞声科技(新加坡)有限公司 扬声器和电子设备
CN208353599U (zh) * 2018-06-01 2019-01-08 瑞声科技(新加坡)有限公司 振膜及扬声器
CN208924482U (zh) * 2018-08-03 2019-05-31 瑞声科技(新加坡)有限公司 一种振膜及扬声器
CN109936804A (zh) * 2019-02-28 2019-06-25 瑞声光电科技(常州)有限公司 音膜及具有该音膜的发声器件
CN209390362U (zh) * 2018-12-31 2019-09-13 瑞声科技(新加坡)有限公司 音膜及采用该音膜的扬声器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007135746A1 (fr) * 2006-05-24 2007-11-29 Pioneer Corporation Dispositif haut-parleur
CN206923033U (zh) * 2017-06-20 2018-01-23 瑞声科技(新加坡)有限公司 扬声器和电子设备
CN208353599U (zh) * 2018-06-01 2019-01-08 瑞声科技(新加坡)有限公司 振膜及扬声器
CN208924482U (zh) * 2018-08-03 2019-05-31 瑞声科技(新加坡)有限公司 一种振膜及扬声器
CN209390362U (zh) * 2018-12-31 2019-09-13 瑞声科技(新加坡)有限公司 音膜及采用该音膜的扬声器
CN109936804A (zh) * 2019-02-28 2019-06-25 瑞声光电科技(常州)有限公司 音膜及具有该音膜的发声器件

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