CN213094475U - Low-distortion broadband composite earphone sound film - Google Patents
Low-distortion broadband composite earphone sound film Download PDFInfo
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- CN213094475U CN213094475U CN202021923274.5U CN202021923274U CN213094475U CN 213094475 U CN213094475 U CN 213094475U CN 202021923274 U CN202021923274 U CN 202021923274U CN 213094475 U CN213094475 U CN 213094475U
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- diaphragm
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- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 238000013016 damping Methods 0.000 claims abstract description 16
- 239000003292 glue Substances 0.000 claims abstract description 15
- 239000012528 membrane Substances 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229920006934 PMI Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920007790 polymethacrylimide foam Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
A low-distortion broadband composite earphone sound film is sequentially provided with an upper vibrating diaphragm, a middle damping glue and a lower vibrating diaphragm from top to bottom; the thicknesses of the upper layer diaphragm and the lower layer diaphragm are the same; the thickness of the middle damping glue is more than or equal to 3 times of the thickness of the upper vibrating diaphragm. So make structural strength increase, hang limit support more stable, the distortion factor is less, the audio is better, the quality improves.
Description
Technical Field
The utility model relates to a speaker technical field, especially a low distortion broadband composite headset sound membrane.
Background
Chinese patent CN200710074327.3 discloses a sound membrane structure of an electroacoustic device and a method for manufacturing the same. The sound membrane structure comprises a circular disc-shaped part 113 arranged at the central part of the sound membrane structure and a circular ring-shaped combining part 111 formed at the outer edge of the circular disc-shaped part, the combining part 111 is concentric with the disc-shaped part 113, a connecting part 112 for connecting the disc-shaped part 113 and the combining part 111 is formed between the disc-shaped part 113 and the combining part 111, the connecting part 112 is upwards tilted to form an arc shape, and the arrangement of the connecting part 112 and the disc-shaped part 113 can improve the rigidity of the central part of the vibrating membrane 11 and simultaneously improve the rigidity of the whole vibrating membrane 11. The existing sound film is made of a single material, such as a nano reflector MCPET, a PP material, polymethacrylimide foam PMI, a PU material, a PEN material, a PT material and the like. At present, when an overlarge signal is input into a loudspeaker, the low-frequency amplitude is aggravated, and a suspended edge is difficult to support, so that vibration unbalance and distortion are increased, sound breaking and noise appear in sound, and the sound film of the small-caliber low-Fo (lowest resonance frequency) earphone is easy to damage after long-time work.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a low distortion broadband composite earphone sound membrane that structural strength increases, the outstanding limit supports more stably, the distortion factor is less, the audio is better, the quality improves to solve above-mentioned problem.
A low-distortion broadband composite earphone sound film is sequentially provided with an upper vibrating diaphragm, a middle damping glue and a lower vibrating diaphragm from top to bottom; the thicknesses of the upper layer diaphragm and the lower layer diaphragm are the same; the thickness of the middle damping glue is more than or equal to 3 times of the thickness of the upper vibrating diaphragm.
Further, the upper layer vibrating diaphragm and the lower layer vibrating diaphragm are polyether-ether-ketone films.
Furthermore, the thickness of the middle damping glue is 5 times of that of the upper layer diaphragm or the lower layer diaphragm.
Furthermore, the low-distortion broadband composite earphone sound film comprises an annular outer sound film ring and a central sound film disc positioned in the inner part of the outer sound film ring; the central sound diaphragm disc is in a round table shape, and the outer edge of the central sound diaphragm disc is connected with the inner side of the outer sound diaphragm ring; the outer sound diaphragm ring is concavely provided with a plurality of inclined grooves which extend towards the central sound diaphragm disc from the position close to the suspension edge; the periphery side of the central sound diaphragm disc is provided with a plurality of first reinforcing ribs in a protruding mode, and the first reinforcing ribs extend towards the outer side of the central sound diaphragm disc from the top of the center of the central sound diaphragm disc.
Further, the height of the outer side of the outer sound diaphragm ring is larger than that of the hanging edge, and the height of the outer sound diaphragm ring is gradually reduced from the outer side to the inner side.
Further, the width of the chute gradually decreases from one end near the hanging edge to one end near the central voice coil.
Further, the plurality of inclined grooves are arranged in a spiral radial shape.
Furthermore, the first reinforcing ribs are connected through annular second reinforcing ribs.
Compared with the prior art, the low-distortion broadband composite earphone sound film of the utility model is provided with an upper vibrating film, a middle damping glue and a lower vibrating film from top to bottom in sequence; the thicknesses of the upper layer diaphragm and the lower layer diaphragm are the same; the thickness of the middle damping glue is more than or equal to 3 times of the thickness of the upper vibrating diaphragm. So make structural strength increase, hang limit support more stable, the distortion factor is less, the audio is better, the quality improves.
Drawings
Embodiments of the present invention are described below with reference to the accompanying drawings, in which:
fig. 1 is the utility model provides a low distortion broadband composite earphone sound membrane's installation sketch map.
Fig. 2 is a schematic diagram of the sound film layered structure of the low-distortion broadband composite earphone provided by the present invention.
Detailed Description
The following describes in further detail specific embodiments of the present invention based on the drawings. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.
Referring to fig. 1, the present invention provides a low distortion broadband composite earphone sound film 20 installed on a mounting frame 10, and a protective cover 30 is disposed on one side of the low distortion broadband composite earphone sound film 20 away from the mounting frame 10.
The utility model provides a compound earphone sound membrane 20 of low distortion wide band includes sound membrane main part 21 and sets up in the dangling limit 22 in the sound membrane main part 21 outside.
The diaphragm body 21 includes an annular outer diaphragm ring 211 and a central diaphragm disc 212 located in the middle of the outer diaphragm ring 211.
The height of the outer side of the outer voice diaphragm ring 211 is greater than the height of the hanging edge 22. The height of the outer voice diaphragm ring 211 gradually decreases from the outer side to the inner side, forming a bucket-shaped structure.
The central diaphragm disk 212 is in the shape of a circular truncated cone, and the outer edge thereof is connected to the inner side of the outer diaphragm ring 211.
The outer voice diaphragm ring 211 is concavely provided with a plurality of inclined grooves 2111 which extend from a position close to the hanging edge 22 to the central voice diaphragm disc 212 in an inclined manner, and the width of each inclined groove 2111 is gradually reduced from one end close to the hanging edge 22 to one end close to the central voice diaphragm disc 212. The plurality of inclined grooves 2111 are arranged in a spiral radial shape.
A plurality of first ribs 2121 are protrudingly provided on a circumferential side surface of the central diaphragm disk 212, and each of the plurality of first ribs 2121 extends from a central top of the central diaphragm disk 212 toward an outer side of the central diaphragm disk 212. The plurality of first reinforcing ribs 2121 are also connected to each other by a second annular reinforcing rib 2122.
The chute 2111, the first reinforcing ribs 2121 and the second reinforcing ribs can enhance the structural strength and improve the sound balance.
Referring to fig. 2, the layered structure of the low-distortion wideband composite earphone sound film 20 provided by the present invention has an upper layer diaphragm 201, a middle damping glue 202 and a lower layer diaphragm 203 from top to bottom in sequence. The thickness of the upper layer diaphragm 201 is the same as or equal to that of the lower layer diaphragm 203, and the thickness of the middle damping glue 202 is greater than or equal to 3 times that of the upper layer diaphragm 201, or the thickness of the middle damping glue 202 is greater than or equal to 3 times that of the lower layer diaphragm 203.
Preferably, the thickness of the middle damping glue 202 is 5 times of the thickness of the upper layer diaphragm 201 or the lower layer diaphragm 203.
The upper diaphragm 201 and the lower diaphragm 203 are polyetheretherketone (Peek) films.
The utility model provides a compound earphone sound membrane 20 of low distortion wide band adopts such three layer construction after, has solved the temperature toleration of relative compatibility, roughness and product after the various material shaping, has showing the promotion on power bears degree, distortion factor, stationarity performance.
Under the condition of high leakage test, the distortion rate at the low frequency of 100-200 Hz is controlled to be below 3 percent, the distortion rate at the 200-1 KHz is controlled to be below 2 percent, and the distortion rate at the 1K-8 KHz is controlled to be below 1 percent; fo (lowest resonance frequency) reaches 160Hz, and the frequency response width is 100-10 KHz.
Compared with the prior art, the low-distortion broadband composite earphone sound film of the utility model is provided with an upper layer vibrating film 201, a middle damping glue 202 and a lower layer vibrating film 203 from top to bottom in sequence; the thicknesses of the upper layer diaphragm 201 and the lower layer diaphragm 203 are the same; the thickness of the middle damping glue 202 is greater than or equal to 3 times of the thickness of the upper layer diaphragm 201. So make structural strength increase, hang limit support more stable, the distortion factor is less, the audio is better, the quality improves.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.
Claims (8)
1. A low-distortion broadband composite earphone sound film is characterized in that: the upper layer vibrating diaphragm, the middle damping rubber and the lower layer vibrating diaphragm are sequentially arranged from top to bottom; the thicknesses of the upper layer diaphragm and the lower layer diaphragm are the same; the thickness of the middle damping glue is more than or equal to 3 times of the thickness of the upper vibrating diaphragm.
2. The low distortion broadband composite headphone sound membrane of claim 1, wherein: the upper layer vibrating diaphragm and the lower layer vibrating diaphragm are polyether-ether-ketone membranes.
3. The low distortion broadband composite headphone sound membrane of claim 1, wherein: the thickness of the middle damping glue is 5 times of that of the upper layer vibrating diaphragm or the lower layer vibrating diaphragm.
4. The low distortion broadband composite headphone sound membrane of claim 1, wherein: the low-distortion broadband composite earphone sound film comprises an annular outer sound film ring and a central sound film disc positioned in the inner part of the outer sound film ring; the central sound diaphragm disc is in a round table shape, and the outer edge of the central sound diaphragm disc is connected with the inner side of the outer sound diaphragm ring; the outer sound diaphragm ring is concavely provided with a plurality of inclined grooves which extend towards the central sound diaphragm disc from the position close to the suspension edge; the periphery side of the central sound diaphragm disc is provided with a plurality of first reinforcing ribs in a protruding mode, and the first reinforcing ribs extend towards the outer side of the central sound diaphragm disc from the top of the center of the central sound diaphragm disc.
5. The low distortion broadband composite earpiece sound film of claim 4, wherein: the height of the outer side of the outer sound diaphragm ring is larger than that of the hanging edge, and the height of the outer sound diaphragm ring is gradually reduced from the outer side to the inner side.
6. The low distortion broadband composite earpiece sound film of claim 4, wherein: the width of the chute is gradually reduced from one end close to the hanging edge to one end close to the central sound diaphragm disc.
7. The low distortion broadband composite earpiece sound film of claim 4, wherein: the plurality of chutes are arranged in a spiral radial shape.
8. The low distortion broadband composite earpiece sound film of claim 4, wherein: the first reinforcing ribs are connected through annular second reinforcing ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021923274.5U CN213094475U (en) | 2020-09-05 | 2020-09-05 | Low-distortion broadband composite earphone sound film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021923274.5U CN213094475U (en) | 2020-09-05 | 2020-09-05 | Low-distortion broadband composite earphone sound film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213094475U true CN213094475U (en) | 2021-04-30 |
Family
ID=75634065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021923274.5U Expired - Fee Related CN213094475U (en) | 2020-09-05 | 2020-09-05 | Low-distortion broadband composite earphone sound film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213094475U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023173579A1 (en) * | 2022-03-18 | 2023-09-21 | 深圳市韶音科技有限公司 | Vibration assembly and loudspeaker |
-
2020
- 2020-09-05 CN CN202021923274.5U patent/CN213094475U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023173579A1 (en) * | 2022-03-18 | 2023-09-21 | 深圳市韶音科技有限公司 | Vibration assembly and loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Low distortion broadband composite earphone sound film Effective date of registration: 20230311 Granted publication date: 20210430 Pledgee: Agricultural Bank of China Limited Zhejiang Yangtze River Delta integration demonstration zone sub branch Pledgor: JIASHAN YUDA ELECTRONICS Co.,Ltd. Registration number: Y2023980034679 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210430 |