CN206674183U - A kind of top dome and loudspeaker applied to the diaphragm of loudspeaker - Google Patents
A kind of top dome and loudspeaker applied to the diaphragm of loudspeaker Download PDFInfo
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- CN206674183U CN206674183U CN201720038757.9U CN201720038757U CN206674183U CN 206674183 U CN206674183 U CN 206674183U CN 201720038757 U CN201720038757 U CN 201720038757U CN 206674183 U CN206674183 U CN 206674183U
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- loudspeaker
- top dome
- layer
- diaphragm
- liquid crystal
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Abstract
The utility model belongs to electroacoustic techniques field, disclose a kind of top dome applied to the diaphragm of loudspeaker, the top dome include the polymethacrylimide plastic foam layer with relative upper surface and lower surface, be adhered to polymethacrylimide plastic foam layer upper surface the first polymeric liquid crystal copolymer layer and be adhered to polymethacrylimide plastic foam layer lower surface the second polymeric liquid crystal copolymer layer.Loudspeaker top dome provided by the utility model instead of used aluminium foil layer, PMI layers and aluminium foil Rotating fields in the prior art with the sandwich straticulate structure of LCP layer, PMI layers and LCP layer.Because the aluminium foil of phase homogenous quantities is compared with LCP, under identical elongation percentage, LCP tensile strength is far above aluminium foil, thus can effectively suppress the segmentation vibrations of loudspeaker top dome, improves the technological deficiency that top dome is chipping during the use of loudspeaker.
Description
Technical field
Electroacoustic techniques field is the utility model is related to, it is more particularly to a kind of to be somebody's turn to do applied to the top dome of the diaphragm of loudspeaker and use
The loudspeaker of top dome.
Background technology
Loudspeaker is a kind of energy transducer for electric signal being changed into acoustical signal, the shadow of the performance quality of loudspeaker to tonequality
Sound is very big.Loudspeaker is a most weak device in stereo set, and for acoustics, it is one most heavy again
The part wanted.Selected vibrating diaphragm largely determines the performance of its tonequality in loudspeaker.
Top dome in the diaphragm of loudspeaker sold in the market is mostly aluminium foil+polymethacrylimide plastic foam
(PMI) sandwich structure of+aluminium foil.However, the tensile strength of aluminium foil is typically within 200MPa, with loudspeaker power and
The increase of amplitude, it is difficult to suppress top dome occur segmentation vibrations, so as to cause in use loudspeaker top dome it is chipping
Situation.
Utility model content
The purpose of this utility model is to provide a kind of top dome applied to the diaphragm of loudspeaker, made with improving in loudspeaker
The technological deficiency of the easy fragmentation of top dome during.
In order to solve the above technical problems, specific embodiment of the present utility model, which provides one kind, is applied to the diaphragm of loudspeaker
Top dome, the top dome includes the polymethacrylimide plastic foam layer with relative upper surface and lower surface
(polymethacrylimide, PMI), the first polymeric liquid crystal copolymer layer (Liquid for being adhered to the upper surface
Crystal Polymer, LCP) and it is adhered to the second polymeric liquid crystal copolymer layer of the lower surface.
In terms of existing technologies, the top dome that specific embodiment of the present utility model is provided, with LCP+PMI+LCP
Sandwich straticulate structure instead of aluminium foil+PMI+ aluminium foil composite constructions.Widely used in existing loudspeaker roof structure
Aluminium foil is as composite bed, increasing with the power and amplitude of loudspeaker but because its tensile strength is within 200MPa, very
Hardly possible suppresses top dome and segmentation vibrations occurs, thus causes the situation that the easy fragmentation of top dome easily occurs in use.The utility model
The top dome that is provided of embodiment instead of aluminium foil using LCP, LCP has abnormal regular filamentary structure feature, relatively
There is very high mechanical strength and modulus in other polymers；In addition, LCP also has excellent heat endurance, heat resistance, and
The less density of opposing metallic material.Specifically, LCP tensile strength is in 400MPa or so, and with the fracture elongation of aluminium foil
Quite；Simultaneously because LCP density is relatively small, the aluminium foil of phase homogenous quantities is compared with LCP, and under identical elongation percentage, LCP resists
Tensile strength is far above aluminium foil, thus can effectively suppress the segmentation vibrations of loudspeaker top dome, avoids top dome in use
It is chipping.
Further, the top dome applied to the diaphragm of loudspeaker that specific embodiment of the present utility model is provided, is also wrapped
The glue layer of the upper surface and lower surface that are covered in the polymethacrylimide plastic foam layer is included, first liquid crystal is high
Molecular polymer layer and the second polymeric liquid crystal copolymer layer are bonded in the upper surface and described by glue layer respectively
Lower surface.Wherein, the glue layer includes macromolecular adhesive.
Wherein, in the roof structure applied to the diaphragm of loudspeaker that specific embodiment of the present utility model is provided,
The thickness of polymethacrylimide plastic foam layer is 0.06~0.5 millimeter, and density range is 0.06~0.3g/cm3。PMI
Foamed plastics is principal monomer generally by acrylic monomer and acrylonitrile monomer, and adds a certain amount of foaming agent, initiation
Agent, crosslinking agent and other auxiliary agents are prepared, and are the rigid foamed plastics of a kind of 100% closed pore in theory, are widely used in raising
In sound device roof structure.
Wherein, in the roof structure applied to the diaphragm of loudspeaker that specific embodiment of the present utility model is provided,
The thickness of first polymeric liquid crystal copolymer layer is 5~30 microns, and the thickness of the second polymeric liquid crystal copolymer layer is micro- for 5~30
Rice.
In addition, specific embodiment of the present utility model furthermore provides a kind of loudspeaker, this kind of loudspeaker includes shaking
Film, the vibrating diaphragm include vibrating diaphragm body and the top dome being arranged in the middle part of vibrating diaphragm body, and the top dome is above-mentioned LCP+PMI+LCP
The top dome of sandwich straticulate structure.This kind of loudspeaker as a result of LCP+PMI+LCP composite construction top domes, even in compared with
Used in the case of high-power and amplitude, be also avoided that segmentation vibrations occur for the top dome of vibrating diaphragm, preferable tonequality performance can reached
While with longer service life.
Brief description of the drawings
Fig. 1 is the structural representation for the top dome applied to the diaphragm of loudspeaker that the utility model first embodiment is provided
Figure.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Each embodiment of type is explained in detail.It is however, it will be understood by those skilled in the art that each in the utility model
In embodiment, in order that reader more fully understands the application and proposes many ins and outs.But even if without these skills
Art details and many variations based on following embodiment and modification, it can also realize that each claim of the application is required and protect
The technical scheme of shield.
First embodiment of the present utility model is related to a kind of top dome applied to the diaphragm of loudspeaker, and the structure of the top dome is shown
It is intended to as shown in Figure 1.Specifically, this kind includes applied to the top dome of the diaphragm of loudspeaker has relative upper surface and following table
The polymethacrylimide plastic foam layer 1 in face, be adhered to polymethacrylimide plastic foam layer 1 upper surface
One polymeric liquid crystal copolymer layer 2-1 and be adhered to polymethacrylimide plastic foam layer 1 lower surface the second liquid crystal
High polymer layer 2-2.In the roof structure of present embodiment, the thickness of polymethacrylimide plastic foam layer 1
For 0.06 millimeter, the first polymeric liquid crystal copolymer layer 2-1 and the second polymeric liquid crystal copolymer layer 2-2 thickness are 5 micro-
Rice.
The top dome applied to the diaphragm of loudspeaker that present embodiment is provided, it is compound to employ LCP+PMI+LCP sandwiches
Layer structure.PMI foamed plastics is the rigid foamed plastics of a kind of 100% closed pore in theory, is widely used in loudspeaker top dome
In structure.LCP has abnormal regular filamentary structure feature, has very high mechanical strength and mould relative to other polymers
Amount, additionally with excellent heat endurance, heat resistance, and the less density of opposing metallic material.Specifically, LCP resists
Tensile strength is and suitable with the fracture elongation of aluminium foil in 400MPa or so；Simultaneously because LCP density is relatively small, phase homogeneity
The aluminium foil of amount is compared with LCP, and under identical elongation percentage, LCP tensile strength is far above aluminium foil, it is possible to effectively suppresses to raise one's voice
The segmentation vibrations of device top dome.The top dome thus provided using present embodiment forms the diaphragm of loudspeaker, can effectively avoid raising one's voice
The chipping situation of top dome during device use, and the tonequality performance of loudspeaker can be improved, extend loudspeaker in relatively high power
Vibrating diaphragm under service life.
The top dome applied to the diaphragm of loudspeaker that second embodiment of the present utility model is related to, its structure are implemented with first
Mode is essentially identical, and uses LCP+PMI+LCP sandwich straticulate structures.On this basis, the ball of present embodiment
Roof construction still further comprises the glue layer of the upper surface and lower surface that are covered in polymethacrylimide plastic foam layer, the
One polymeric liquid crystal copolymer layer and the second polymeric liquid crystal copolymer layer are bonded in polymethyl acyl by glue layer respectively
The upper surface and lower surface of imines foam layer, specifically, above-mentioned glue layer include macromolecular adhesive.In addition, this
The thickness of polymethacrylimide plastic foam layer in embodiment is 0.2 millimeter；First polymeric liquid crystal copolymer layer,
The thickness of second polymeric liquid crystal copolymer layer is respectively 20 microns.
The top dome applied to the diaphragm of loudspeaker that 3rd embodiment of the present utility model is related to, its structure and two embodiment party
Formula is identical, and uses LCP+PMI+LCP sandwich straticulate structures.Its difference is：Poly- methyl in present embodiment
The thickness of acrylimide foam layer, the first polymeric liquid crystal copolymer layer and the second polymeric liquid crystal copolymer layer enters one
Step increase.Specifically, the thickness of polymethacrylimide plastic foam layer is 0.5 millimeter；First liquid crystal polymer polymerize
Nitride layer, the thickness of the second polymeric liquid crystal copolymer layer are respectively 30 microns.
4th embodiment of the present utility model is related to a kind of loudspeaker, specifically, the loudspeaker bag of present embodiment
Vibrating diaphragm is included, this kind of vibrating diaphragm includes vibrating diaphragm body and the top dome being arranged in the middle part of vibrating diaphragm body, and this kind of top dome is that this practicality is new
Top dome provided in the embodiment of type first to the 3rd.As a result of LCP+PMI+LCP sandwich straticulate structure structures
Into vibrating diaphragm, thus the loudspeaker of present embodiment uses in the case of relatively high power and amplitude, is also avoided that vibrating diaphragm
Segmentation vibrations occur for top dome, with longer service life while preferable tonequality is showed.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific implementation of the present utility model
Example, and in actual applications, can to it, various changes can be made in the form and details, without departing from spirit of the present utility model
And scope.
Claims (7)
1. a kind of top dome applied to the diaphragm of loudspeaker, it is characterised in that include polymethacrylimide plastic foam layer, institute
Stating polymethacrylimide plastic foam layer has relative a upper surface and lower surface, and the top dome also includes being adhered to described
First polymeric liquid crystal copolymer layer of upper surface and the second polymeric liquid crystal copolymer layer for being adhered to the lower surface.
2. the top dome according to claim 1 applied to the diaphragm of loudspeaker, it is characterised in that：The top dome also includes covering
Glue layer in the upper surface of the polymethacrylimide plastic foam layer and lower surface, first liquid crystal polymer gather
Compound layer and the second polymeric liquid crystal copolymer layer are bonded in the upper surface and the lower surface by glue layer respectively.
3. the top dome according to claim 2 applied to the diaphragm of loudspeaker, it is characterised in that the glue layer includes high score
Sub- adhesive.
4. the top dome according to claim 1 applied to the diaphragm of loudspeaker, it is characterised in that the polymethyl acyl is sub-
The thickness of amine foam layer is 0.06~0.5 millimeter.
5. the top dome according to claim 1 applied to the diaphragm of loudspeaker, it is characterised in that first liquid crystal polymer
The thickness of polymeric layer is 5~30 microns.
6. the top dome according to claim 1 applied to the diaphragm of loudspeaker, it is characterised in that second liquid crystal polymer
The thickness of polymeric layer is 5~30 microns.
7. a kind of loudspeaker, it is characterised in that the loudspeaker includes vibrating diaphragm, and the vibrating diaphragm includes vibrating diaphragm body and is arranged at
The top dome as described in any one of claim 1~6 in the middle part of the vibrating diaphragm body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720038757.9U CN206674183U (en) | 2017-01-12 | 2017-01-12 | A kind of top dome and loudspeaker applied to the diaphragm of loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720038757.9U CN206674183U (en) | 2017-01-12 | 2017-01-12 | A kind of top dome and loudspeaker applied to the diaphragm of loudspeaker |
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| Publication Number | Publication Date |
|---|---|
| CN206674183U true CN206674183U (en) | 2017-11-24 |
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ID=60378364
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720038757.9U Expired - Fee Related CN206674183U (en) | 2017-01-12 | 2017-01-12 | A kind of top dome and loudspeaker applied to the diaphragm of loudspeaker |
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| CN (1) | CN206674183U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111647282A (en) * | 2020-04-22 | 2020-09-11 | 深圳市信维通信股份有限公司 | Vibrating diaphragm material and preparation method and application thereof |
| CN111654803A (en) * | 2020-04-22 | 2020-09-11 | 深圳市信维通信股份有限公司 | Preparation method of liquid crystal film, liquid crystal film and earphone diaphragm |
| CN116723445A (en) * | 2023-08-09 | 2023-09-08 | 江苏裕成电子有限公司 | High-low pitch piezoelectric loudspeaker |
-
2017
- 2017-01-12 CN CN201720038757.9U patent/CN206674183U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111647282A (en) * | 2020-04-22 | 2020-09-11 | 深圳市信维通信股份有限公司 | Vibrating diaphragm material and preparation method and application thereof |
| CN111654803A (en) * | 2020-04-22 | 2020-09-11 | 深圳市信维通信股份有限公司 | Preparation method of liquid crystal film, liquid crystal film and earphone diaphragm |
| CN116723445A (en) * | 2023-08-09 | 2023-09-08 | 江苏裕成电子有限公司 | High-low pitch piezoelectric loudspeaker |
| CN116723445B (en) * | 2023-08-09 | 2023-10-03 | 江苏裕成电子有限公司 | High-low pitch piezoelectric loudspeaker |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20220112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |