CN207968945U - Carbon fiber top dome and loud speaker - Google Patents
Carbon fiber top dome and loud speaker Download PDFInfo
- Publication number
- CN207968945U CN207968945U CN201820254207.5U CN201820254207U CN207968945U CN 207968945 U CN207968945 U CN 207968945U CN 201820254207 U CN201820254207 U CN 201820254207U CN 207968945 U CN207968945 U CN 207968945U
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- carbon fiber
- top dome
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- fiber top
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Abstract
The utility model provides a kind of carbon fiber top dome, and the carbon fiber top dome includes substrate layer and is stacked at the first carbon fiber layer of the substrate layer, and first carbon fiber layer is equipped with through-hole.The utility model additionally provides a kind of loud speaker including the carbon fiber top dome.Carbon fiber top dome in the utility model is in the case where ensureing same intensity, it reduces the thickness of top dome and alleviates the quality of top dome so that sound quality gets a promotion, and ensure that all directions stress equalization, restorability is good after stress, improves the service life of speaker product.
Description
【Technical field】
The utility model is related to electroacoustic instrument fields, and in particular to a kind of carbon fiber top dome and including the carbon fiber top dome
Loud speaker.
【Background technology】
Dome loudspeaker refers to the loud speaker using the direct radiative acoustic wave of top dome shape vibrating diaphragm.Belong to dynamic speaker,
Vibrating diaphragm ring directly supports voice coil without centring disk, and feature is that high frequency response is good, and directive property is wide and distortion is smaller.Vibrating diaphragm
Top dome portion conventional aluminium foil is combined with expanded material, and with the development of electronics industry, electroacoustics system needs continuous enhancing
Energy and reliability, the requirement to top dome is also higher and higher, and the existing aluminium foil top dome compound with expanded material cannot meet
Use demand often will appear aluminium foil fragmentation, the problems such as strength of materials is insufficient.On the other hand, since the material is soft for aluminium foil, foaming material
Material stress is easy to happen deformation, and restorability is poor after stress, can not bear pressure so that product service life reduces, simultaneously
In order to reach oscillation intensity and ensure mechanical property, the combination layer thickness of the expanded material and aluminium foil that are used in top dome is larger.
Therefore, it is necessary to provide a kind of novel carbon fiber top dome to solve the above problems.
【Invention content】
The purpose of this utility model is to provide a kind of lightweight carbon fiber top domes of excellent in mechanical performance.
The technical solution of the utility model is as follows：A kind of carbon fiber top dome, the carbon fiber top dome include substrate layer and fold
Set on the first carbon fiber layer of the substrate layer, first carbon fiber layer is equipped with through-hole.
Preferably, the substrate layer includes first end face and the second end face that is oppositely arranged with first end face, and described first
Carbon fiber layer is stacked at the first end face, and the carbon fiber top dome further includes being stacked at the second carbon fiber of the second end face
Layer.
Preferably, second carbon fiber layer is equipped with through-hole.
Preferably, first carbon fiber layer and second carbon fiber layer respectively include at least two layers of carbon fiber one-way band
Prepreg, the carbon fiber one-way band prepreg of adjacent layer form first carbon fiber layer and described the by hot-forming
Two carbon fiber layers.
Preferably, the shape of the through-hole is round, triangle or rectangle.
Preferably, the through-hole is multiple, and the through-hole is arranged in array.
Preferably, fiber angle of the carbon fiber one-way of adjacent layer with prepreg is 0~90 °.
Preferably, the thickness of the carbon fiber top dome is 40~400 μm.
Preferably, the thickness of the carbon fiber top dome is 80~200 μm.
Preferably, the substrate layer is one kind in expanded material, aluminium foil or polyethylene naphthalate
Preferably, the carbon fiber one-way band prepreg includes carbon fibre material and pre-soaked resin, the carbon fibre material
Stretch modulus be more than 200Gpa, the pre-soaked resin include epoxy resin, polyether-ether-ketone, polyimides, polyphenylene sulfide, poly- pair
It is one or more in penylene Benzo-dioxazole, poly(p-phenylene terephthalamide).
The another object of the utility model is to provide a kind of loud speaker comprising vibrational system, the vibrational system packet
The vibrating diaphragm of vibration sounding is included, the vibrating diaphragm includes the carbon fiber top dome described in any of the above one.
Compared with the relevant technologies, carbon fiber top dome provided by the utility model is by carbon fiber one-way band prepreg hot pressing
It is molded on the carbon fiber layer formed after setting through-hole and folded set of the base materials such as itself and aluminium foil is constituted into carbon fiber top dome, it is identical strong providing
In the case of degree, reduces the thickness of top dome and alleviate the quality of top dome so that sound quality gets a promotion；In carbon fiber list
Into the solidification process with prepreg so that carbon fiber fits closely, all directions stress equalization ensure that, intensity is high, after stress
Restorability is good, ensure that the service life of speaker product.
【Description of the drawings】
Fig. 1 is the exploded view of the utility model loud speaker；
Fig. 2 is the exploded view of the utility model carbon fiber top dome；
Fig. 3 is the sectional view of carbon fiber top dome in the utility model first embodiment；
Fig. 4 is the structural schematic diagram of carbon fiber top dome in the utility model second embodiment；
Fig. 5 is the structural schematic diagram of carbon fiber top dome in the utility model 3rd embodiment.
【Specific implementation mode】
The utility model is described in detail with reference to Fig. 1 to Fig. 5.
As shown in Figure 1, for the loud speaker 1 of the utility model comprising before frame 10 and the composition receiving space of frame 10
Lid 20, the vibrational system 30 and magnetic circuit system 40 for being housed in the receiving space and being individually fixed in frame 10.
Vibrational system 30 includes the vibrating diaphragm 31 for being positioned at frame 10, is connect with vibrating diaphragm 31 and drive 31 vibration sounding of vibrating diaphragm
Voice coil 32.Vibrating diaphragm 31 includes carbon fiber top dome 311 and the ring 312 around carbon fiber top dome 311, and the periphery of ring 312 is solid
It is scheduled in frame 10.
(embodiment 1)
As shown in Figures 2 and 3, the carbon fiber top dome 311 in the present embodiment structure includes substrate layer 313, and substrate layer 313 wraps
The second end face 313b for including first end face 313a and being oppositely arranged with first end face 313a, carbon fiber top dome 311 further include folded set
In the first carbon fiber layer 314 for being stacked at first end face 313a and the second carbon fiber layer 315 for being stacked at second end face 313b, the
One carbon fiber layer 314 is disposed in proximity to the side of voice coil 32, and the first carbon fiber layer 314 is equipped with through-hole 316, through-hole 316
Shape is the regular shapes such as round, triangle or rectangle, and through-hole 316 is multiple, and multiple through-holes 316 are arranged in array；At other
In embodiment, the shape of through-hole 316 is alternatively other irregular shapes.
Substrate layer 313 in the present embodiment structure is in expanded material, aluminium foil, polyethylene naphthalate (PEN)
One kind can also be other toughness base materials in other embodiments.314 He of the first carbon fiber layer in carbon fiber top dome 311
Second carbon fiber layer 315 includes at least two layers of carbon fiber one-way band prepreg 317, the carbon fiber one-way band prepreg of adjacent layer
317, by the first carbon fiber layer 314 of hot-forming formation and the second carbon fiber layer 315, are capable of providing preferable mechanical strength, together
Shi Houdu is also relatively thin, can proof strength, and can guarantee vibration toughness, the thickness of the carbon fiber top dome 311 in the present embodiment structure
Degree both ensure that intensity, also ensure the convenience of manufacture between 40~400um；Carbon fiber top dome 311 ensure that simultaneously
Except mechanical strength, moreover it is possible to higher acoustic quality be provided, due to the top dome prepared using same material properties, ensured
The purity of sounding can ensure that with preferable frequency especially when the thickness of carbon fiber top dome 311 is in 80~200um
Rate characteristic can cover higher range of voice.Fiber angle of the carbon fiber one-way of adjacent layer with prepreg 317 be 0~
90 °, e.g., adjacent layer is arranged to 30 °, 45 °, 60 ° etc., and machine direction forms certain angle between each layer, ensure that all directions
Stress equalization forms integral structure, intensity is high, non-breakable after hot-forming processing.
As shown in figure 3, the first carbon fiber layer 314 and the second carbon fiber layer 315 in the present embodiment structure include two layers
Carbon fiber one-way band prepreg 317.In addition to this, the first carbon fiber layer 314 and the second carbon fiber layer 315 can also be used three layers and
Prepreg 317 is hot-forming forms for above carbon fiber one-way band, such as four layers of carbon fiber one-ways band prepreg 317, five layers of carbon fiber
One-way tape prepreg 317 or more layer, but need the thickness for ensureing carbon fiber top dome 311 in claimed range, to keep compared with
Good acoustic quality.
Carbon fiber one-way band prepreg 317 in the present embodiment structure includes carbon fibre material and pre-soaked resin, carbon fiber
One-way tape prepreg 317 can bear larger stress in fiber extension direction, i.e. machine direction, vertical in machine direction
Can bear weaker stress on direction, but by with ability that endurance is greatly enhanced after resin solidification, specifically, the preimpregnation
Resin includes：Epoxy resin, polyether-ether-ketone (PEEK), polyimides (PI), polyphenylene sulfide (PPS), polyparaphenylene Ben Bing bis- Evil
It is one or more in azoles (PBO), poly(p-phenylene terephthalamide) (Fanglun l414)；The stretch modulus of the carbon fibre material
More than 200Gpa, the carbon fibre material is piled up by organic fibers such as flake graphites along fiber axial direction, through carbon
Microcrystalline graphite material obtained from change and graphitization processing.Carbon fiber " soft outside but hard inside ", quality is lighter than metallic aluminium, but intensity is high
In steel, and there is corrosion-resistant, high-modulus characteristic, in practice, may be used including the beautiful T series T300 or more in east, M systems
Row own and materials of other series and other suppliers of same intensity rank.So that the carbon fiber ball of the utility model
It pushes up 311 structural mechanical properties to be greatly improved, while weight saving, thickness is thinning, provides vibration performance and ensure that sound
Quality, while saving product space.In addition, since carbon fiber one-way after the resin solidification in prepreg 317 with enabling to carbon
The surface of 311 structure of fiber top dome is smooth, and since the mechanical strength of resin after solidification is not likely to produce scratch firmly so that the carbon fiber
311 structure of top dome is more beautiful.
(embodiment 2)
As shown in figure 4, differing only in for the present embodiment and embodiment 1, through-hole also is provided on the second carbon fiber layer 315 '
316’。
(embodiment 3)
As shown in figure 5, the present embodiment and embodiment 1 differ only in, the first carbon fiber layer 314 " and the second carbon fiber
Layer 315 " includes three layers of carbon fiber one-way band prepreg 317 ".
Carbon fiber top dome provided by the utility model is by carbon fiber of the carbon fiber one-way with the hot-forming formation of prepreg
Folded set of the base materials such as itself and expanded material, aluminium foil is constituted into carbon fiber top dome, the top dome with the relevant technologies after setting through-hole on dimension layer
It compares, in the case where providing same intensity, reduces the thickness of top dome and alleviate the quality of top dome so that sound quality obtains
To promotion；In addition, making carbon fiber fit closely in solidification process of the carbon fiber one-way with prepreg, all directions are ensure that
Stress equalization, carbon fiber top dome intensity is high, and restorability is good after stress, ensure that the service life of speaker product.
Above-described is only the embodiment of the utility model, it should be noted here that for the ordinary skill of this field
For personnel, without departing from the concept of the present invention, improvement can also be made, but these belong to this practicality
Novel protection domain.
Claims (12)
1. a kind of carbon fiber top dome, it is characterised in that：The carbon fiber top dome includes substrate layer and is stacked at the substrate layer
First carbon fiber layer, first carbon fiber layer are equipped with through-hole.
2. carbon fiber top dome according to claim 1, it is characterised in that：The substrate layer includes first end face and with first
The second end face that end face is oppositely arranged, first carbon fiber layer are stacked at the first end face, and the carbon fiber top dome is also wrapped
Include the second carbon fiber layer for being stacked at the second end face.
3. carbon fiber top dome according to claim 2, it is characterised in that：Second carbon fiber layer is equipped with through-hole.
4. carbon fiber top dome according to claim 2, it is characterised in that：First carbon fiber layer and second carbon fiber
It includes at least two layers of carbon fiber one-way band prepreg to tie up layer, and the carbon fiber one-way band prepreg of adjacent layer is by being hot pressed into
Type forms first carbon fiber layer and second carbon fiber layer.
5. carbon fiber top dome according to claim 1 or 3, it is characterised in that：The shape of the through-hole is round, triangle
Or rectangle.
6. carbon fiber top dome according to claim 5, it is characterised in that：The through-hole is multiple, and the through-hole is in array
Arrangement.
7. carbon fiber top dome according to claim 4, it is characterised in that：The carbon fiber one-way band prepreg of adjacent layer
Fiber angle be 0~90 °.
8. carbon fiber top dome according to claim 1, it is characterised in that：The thickness of the carbon fiber top dome is 40~400 μ
m。
9. carbon fiber top dome according to claim 8, it is characterised in that：The thickness of the carbon fiber top dome is 80~200 μ
m。
10. carbon fiber top dome according to claim 1, it is characterised in that：The substrate layer is expanded material, aluminium foil or poly-
One kind in (ethylene naphthalate).
11. carbon fiber top dome according to claim 4, it is characterised in that：The carbon fiber one-way band prepreg includes carbon
The stretch modulus of fibrous material and pre-soaked resin, the carbon fibre material is more than 200Gpa, and the pre-soaked resin includes asphalt mixtures modified by epoxy resin
One kind in fat, polyether-ether-ketone, polyimides, polyphenylene sulfide, polyparaphenylene's Benzo-dioxazole, poly(p-phenylene terephthalamide)
Or it is a variety of.
12. a kind of loud speaker comprising vibrational system, the vibrational system include the vibrating diaphragm of vibration sounding, it is characterised in that：Institute
It includes the carbon fiber top dome as described in claim 1-11 any one to state vibrating diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254207.5U CN207968945U (en) | 2018-02-11 | 2018-02-11 | Carbon fiber top dome and loud speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254207.5U CN207968945U (en) | 2018-02-11 | 2018-02-11 | Carbon fiber top dome and loud speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207968945U true CN207968945U (en) | 2018-10-12 |
Family
ID=63739562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820254207.5U Active CN207968945U (en) | 2018-02-11 | 2018-02-11 | Carbon fiber top dome and loud speaker |
Country Status (1)
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|---|---|
| CN (1) | CN207968945U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020107617A1 (en) * | 2018-11-30 | 2020-06-04 | 歌尔股份有限公司 | Sound generating apparatus |
| WO2020107618A1 (en) * | 2018-11-30 | 2020-06-04 | 歌尔股份有限公司 | Sound producing device |
| WO2020107619A1 (en) * | 2018-11-30 | 2020-06-04 | 歌尔股份有限公司 | Sound production apparatus |
| CN111385722A (en) * | 2019-12-26 | 2020-07-07 | 瑞声科技(新加坡)有限公司 | Vibrating diaphragm ball top |
| CN111711891A (en) * | 2020-06-24 | 2020-09-25 | 歌尔股份有限公司 | Dome, loudspeaker monomer and sound generating mechanism |
| CN111954126A (en) * | 2020-06-30 | 2020-11-17 | 瑞声新能源发展(常州)有限公司科教城分公司 | Carbon fiber dome and loudspeaker |
| WO2021000119A1 (en) * | 2019-06-29 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| WO2021000117A1 (en) * | 2019-06-29 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
-
2018
- 2018-02-11 CN CN201820254207.5U patent/CN207968945U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020107617A1 (en) * | 2018-11-30 | 2020-06-04 | 歌尔股份有限公司 | Sound generating apparatus |
| WO2020107618A1 (en) * | 2018-11-30 | 2020-06-04 | 歌尔股份有限公司 | Sound producing device |
| WO2020107619A1 (en) * | 2018-11-30 | 2020-06-04 | 歌尔股份有限公司 | Sound production apparatus |
| WO2021000119A1 (en) * | 2019-06-29 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| WO2021000117A1 (en) * | 2019-06-29 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| CN111385722A (en) * | 2019-12-26 | 2020-07-07 | 瑞声科技(新加坡)有限公司 | Vibrating diaphragm ball top |
| CN111711891A (en) * | 2020-06-24 | 2020-09-25 | 歌尔股份有限公司 | Dome, loudspeaker monomer and sound generating mechanism |
| WO2021258607A1 (en) * | 2020-06-24 | 2021-12-30 | 歌尔股份有限公司 | Dome, loudspeaker unit, and sound generation device |
| CN111711891B (en) * | 2020-06-24 | 2022-06-07 | 歌尔股份有限公司 | Dome, loudspeaker monomer and sound generating mechanism |
| CN111954126A (en) * | 2020-06-30 | 2020-11-17 | 瑞声新能源发展(常州)有限公司科教城分公司 | Carbon fiber dome and loudspeaker |
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