CN203261470U - High-pitch composite vibration film - Google Patents
High-pitch composite vibration film Download PDFInfo
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- CN203261470U CN203261470U CN 201320315251 CN201320315251U CN203261470U CN 203261470 U CN203261470 U CN 203261470U CN 201320315251 CN201320315251 CN 201320315251 CN 201320315251 U CN201320315251 U CN 201320315251U CN 203261470 U CN203261470 U CN 203261470U
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Abstract
The utility model discloses a high-pitch composite vibration film which comprises a vibration edge 1 made of high-molecular damping materials, and a spherical cap 2 made of metal materials. The upper surface of the spherical cap 2 is provided with a ceramic layer 21. By utilizing the structure provided by the utility model, the hardness performance of the spherical cap 2 is increased several times higher than that of a single metal material of a conventional technology, thereby raising the values of elastic modulus by several times. In addition, a metal layer on the spherical cap 2 can be selected from metals with common hardness in the condition that the ceramic layer can effectively meet the requirement of guaranteeing high elastic modulus, and the range of materials that can be selected from is wider and the cost is lower.
Description
Technical field
The utility model relates to a kind of loudspeaker diaphragm, specifically is a kind of composite diaphragm.
Background technology
Along with improving constantly of the market demand, electronic device such as loud speaker etc. are also more and more higher to the requirement of sound quality, and vibrating diaphragm is also thereupon more and more higher to the requirement of its acoustical behavior as the core component of microphone device.According to the common recognition of the art, vibrating diaphragm must possess lightweight, high elastic modulus, height is internally-damped could realize good acoustical behavior.In high pitch, though common metal class vibrating diaphragm can satisfy the modulus of elasticity requirement, its internal damping is generally 0.03～0.05N (m/s).Rated power large such as the high-power state more than the 300W under, tend to high pitch distortion and the quick-fried film phenomenon of causing less than normal owing to internal damping.
Publication number be CN102523543A Patent Application Publication a kind of tweeters diaphragms, it is comprised of vibration limit and ball top, the vibration limit is made of macromolecular material, the ball top is made of metal material, because the internal damping value of macromolecular material can reach 0.2～0.5N (m/s), this composite diaphragm integral damping value is risen to about 0.1N (m/s), solved preferably the little problem of metal species vibrating diaphragm internal damping.But, along with the raising of market to the tonequality requirement, in the professional microphone device that some high tone qualities require, select elastic mould value can't satisfy the requirement of high elastic modulus at the single metal of 10～100GPa as the ball top of this composite diaphragm, and specific metal material or alloy material are comparatively expensive.
Therefore, be necessary to provide a kind of high elastic modulus, internal damping is large and material is cheap composite diaphragm.
The utility model content
The technical problems to be solved in the utility model is, provides a kind of internal damping that can make can make greatly again modulus of elasticity high, and cheap high pitch composite diaphragm.
Technical solution of the present utility model is that a kind of high pitch composite diaphragm with following structure is provided: it comprises the ball top of metal material and circumferentially is arranged at the ball top margin along the vibration limit of upper annular that described ball top is provided with ceramic layer.
Adopt above structure, the utility model compared with prior art has the following advantages: described ball top is provided with ceramic layer, this structure increases several times as more than 5 times than the single metal material of original technology at hardness performance, thereby its elastic mould value can promote several times.In addition, can guarantee effectively under the requirement of high elastic modulus at described ceramic layer that the metal of common hardness can be selected in described ball top, selection range is wider, and cost is cheaper.
As a kind of improvement of the present utility model, described ceramic layer thickness is preferably 2um-20um.Too thin ceramic layer can't satisfy the lifting requirement of hardness performance, and blocked up ceramic layer can cause unnecessary waste and vibrating diaphragm weight is increased.
As a kind of improvement of the present utility model, described ceramic layer thickness the best is 10um.When the ball top is provided with the ceramic layer of 10um thickness, satisfy the demand of high elastic modulus, reduce again ceramic layer thickness, alleviate the vibrating diaphragm overall weight.
As another kind of improvement the of the present utility model, described vibration limit and ball top are splits, are undertaken bondingly between the two by reinforcing agent, and described vibration limit is the vibration limit of being made by polymer damping material.Vibration limit and the split of ball top can make the two select unlike material, and whole internal damping can be improved in the vibration limit of polymer damping material, and the modulus of elasticity of vibrating diaphragm can be improved in the ball top of metal species material.
As a kind of improvement of the present utility model, the material on described ball top is preferably titanium.
Description of drawings
Fig. 1 is the utility model explosive view.
Fig. 2 is the utility model cutaway view.
Fig. 3 is " B " enlarged drawing among Fig. 2.
Fig. 4 is the utility model schematic diagram
Shown in the figure: 1, vibration limit, 2, ball top, 21, ceramic layer.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As depicted in figs. 1 and 2, the utility model is by the ball of metal material top 2 and circumferentially be arranged at the vibration limit 1 that ball pushes up the annular on 2 edges and consist of, it is bonding that the outward flange joint place on its vibration limit 1 and ball top 2 uses the high strength reinforcement agent to carry out, and this reinforcing agent can be selected single-liquid type epoxy.Described ball top 2 is provided with ceramic layer 21, and this ceramic layer 21 covers on the upper surface on whole ball top 2 uniformly, and described ball pushes up 2 materials and is preferably titanium.The upper surface of mentioning in the description of this embodiment refers to, the hunchbacked face on ball top 2.Described ceramic layer 21 thickness are preferably 2um～20um, along with the increase of ceramic layer 21 thickness, its modulus of elasticity increases, but its weight also increases thereupon, by the common recognition of the art as can be known, the increase of vibrating diaphragm weight can cause the sensitivity of vibrating diaphragm piston movement.According to multiple authentication of the present utility model, when the thickness of ceramic layer 21 is preferably 10um, its dimension formula hardness (HV) can reach more than 500,20 times of aluminum metal, more than 5 times of copper metal, the several times of the hardness that described ceramic layer 21 brings promote the lifting that the modulus of elasticity that can make ball push up 2 integral body has several times thereupon.
As a kind of improved variation of the present utility model, described ball top 2 not only is confined to titanium described in the specific embodiment for metal material, and described ball top 2 can also be to be formed by metal manufacturing comparatively commonly used in the industrial production such as aluminium, copper.
Above-described only is preferred embodiments of the present utility model; should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the utility model creation design; can also make improvement, but these all belong to protection range of the present utility model.
Claims (5)
1. a high pitch composite diaphragm comprises the ball top (2) of metal material and circumferentially is arranged at the vibration limit (1) that ball pushes up the annular on (2) edge, it is characterized in that: described ball top (2) upper surface is provided with one deck ceramic layer (21).
2. high pitch composite diaphragm according to claim 1, it is characterized in that: described ceramic layer (21) thickness is 2um-20um.
3. high pitch composite diaphragm according to claim 2, it is characterized in that: described ceramic layer (21) thickness is 10um.
4. high pitch composite diaphragm according to claim 1 is characterized in that: described vibration limit (1) and ball top (2) are splits, and the reinforcing agent that passes through between the two is bonding, and described vibration limit (1) is the vibration limit (1) of being made by polymer damping material.
5. high pitch composite diaphragm according to claim 1 is characterized in that: the material on described ball top (2) is titanium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320315251 CN203261470U (en) | 2013-06-03 | 2013-06-03 | High-pitch composite vibration film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320315251 CN203261470U (en) | 2013-06-03 | 2013-06-03 | High-pitch composite vibration film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203261470U true CN203261470U (en) | 2013-10-30 |
Family
ID=49474000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320315251 Expired - Fee Related CN203261470U (en) | 2013-06-03 | 2013-06-03 | High-pitch composite vibration film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203261470U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916800A (en) * | 2014-04-03 | 2014-07-09 | 美特科技(苏州)有限公司 | Composite vibration film |
| CN108632721A (en) * | 2017-03-15 | 2018-10-09 | 奥音科技（北京）有限公司 | Top dome made of ceramic material |
| CN110809221A (en) * | 2019-09-17 | 2020-02-18 | 安克创新科技股份有限公司 | Vibrating diaphragm and loudspeaker |
-
2013
- 2013-06-03 CN CN 201320315251 patent/CN203261470U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916800A (en) * | 2014-04-03 | 2014-07-09 | 美特科技(苏州)有限公司 | Composite vibration film |
| CN108632721A (en) * | 2017-03-15 | 2018-10-09 | 奥音科技（北京）有限公司 | Top dome made of ceramic material |
| CN110809221A (en) * | 2019-09-17 | 2020-02-18 | 安克创新科技股份有限公司 | Vibrating diaphragm and loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20131030 Termination date: 20190603 |