CN207637638U - A kind of low noise is low to hold the thin film capacitor that declines - Google Patents
A kind of low noise is low to hold the thin film capacitor that declines Download PDFInfo
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- CN207637638U CN207637638U CN201721676443.8U CN201721676443U CN207637638U CN 207637638 U CN207637638 U CN 207637638U CN 201721676443 U CN201721676443 U CN 201721676443U CN 207637638 U CN207637638 U CN 207637638U
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Abstract
The utility model discloses a kind of low appearances of low noise to decline thin film capacitor, including at least two metal layers are superimposed the ontology to be formed with dielectric layer interval, and the ontology both sides of the edge are equipped with metal extraction layer, it is characterised in that：In the ontology, each dielectric layer two sides edge all extends to body edges, adjacent metal layer both ends atlernating edge stays side, and it is equipped with the coat of metal in Liu Bianchu, it is equipped with and leaves a blank between the coat of metal and the metal layer, the coat of metal extends to the body edges, and draws layer with the metal and connect.The utility model by complete Combined roll around ontology, realize both ends film fixation, avoid exchange electro ultrafiltration under noise and capacity attenuation, improve capacitor performance, prolong the service life.
Description
Technical field
The utility model is related to the low appearances of a kind of thin film capacitor more particularly to a kind of low noise to decline thin film capacitor.
Background technology
For capacitor in accordance with the difference of medium, there are many its type, such as：Electrolyte capacitance, papery capacitance, thin-film capacitor,
Ceramic condenser, mica capacitor, air capacitance etc..But it is the most used in sound appliances, surely belong to electrolytic capacitor and thin
Film (Film) capacitor.Wherein, thin-film capacitor is then used in the commissure of analog signal, the bypass (reciprocal cross of power supply noise extensively
Even) etc. places.
Thin film capacitor is to work as electrode with metal foil 10, by itself and poly- ethyl ester, polypropylene, polystyrene or makrolon etc.
Plastic film 11 (dielectric layer) winds (shown in attached drawing 1) to mutually stagger pattern, and the fuse after winding is after flattening forming
Semi-finished product with metastable capacity, through metal spraying 12, welding is made after encapsulation.
Capacitor often occur (especially in alternating current occasion) however, in the use of product can make a sound, to making
User causes doubt and worry.And the decaying (coating disengaging) of capacity is will produce, slight person causes circuit malfunction, serious meeting
Open circuit or short circuit.
Invention content
The utility model aim is to provide a kind of low appearance of low noise and declines thin film capacitor, passes through the improvement of structure, improves electricity
Container noise and capacity fade problem, and it is simple in structure, the consistency of performance of product is strong.
In order to achieve the above objectives, the technical solution adopted in the utility model is：A kind of low noise is low to hold the thin film capacitor that declines,
The ontology to be formed is superimposed with dielectric layer interval including at least two metal layers, the ontology both sides of the edge are drawn equipped with metal
Layer, in the ontology, each dielectric layer two sides edge all extends to body edges, adjacent metal layer both ends staggered edge
Edge stays side, and is equipped with the coat of metal in Liu Bianchu, is equipped with and leaves a blank between the coat of metal and the metal layer, the coat of metal
The body edges are extended to, and draws layer with the metal and connect.
In above-mentioned technical proposal, the ontology both sides of the edge are continuously made of several concave-convexes.
Further technical solution is ontology both sides of the edge undulate.
Since above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：
1. the utility model dielectric layer two sides are arranged on the part of extension along body edges are extended to and stay side and gold
Belong to coating avoids the hanging phenomenon in previous structure, film both ends from all being consolidated to realize being completely superposed between each layer
Fixed, under the effect of alternating current, the vibration amplitude and shaking force of film can be curbed, de- to reduce noise and coating
From possibility, achieve the effect that low noise low capacity decay；
2. in the present invention, the two sides undulate (being continuously made of several concave-convexes) of ontology, is winding
In the process, ontology section can be made to form certain hole by waveform trimming, adhesive force is substantially improved in follow-up metal spraying, carries
High electrical property；
3. the utility model is simple in structure, it is suitable for two string structures or more string structures, edge thickening type coating or gradation type
The making of coating and the wound capacitance of all kinds of film rolls.
Description of the drawings
Fig. 1 is the utility model background technology structural schematic diagram；
Fig. 2 is the structural schematic diagram of the utility model embodiment one；
Fig. 3 is the body construction schematic diagram of the utility model embodiment one.
Wherein：1, metal layer；2, dielectric layer；3, metal draws layer；4, the coat of metal；5, it leaves a blank；6, waveform；
10, metal foil；11, plastic film；12, metal spraying.
Specific implementation mode
The utility model is further described with reference to the accompanying drawings and embodiments：
Embodiment one：Shown in Fig. 2~3, a kind of low appearance of low noise declines thin film capacitor, including multiple metal layers 1 with
The ontology that the superposition of the interval of dielectric layer 2 is formed, the ontology both sides of the edge are equipped with metal and draw layer 3, in the ontology, Mei Yisuo
2 two sides of electric layer are given an account of along body edges are all extended to, 1 both ends atlernating edge of the adjacent metal layer stays side, and in Liu Bianchu
It is equipped with equipped with the coat of metal 4, between the coat of metal 4 and the metal layer 1 and leaves a blank 5, the coat of metal 4 extends to described
Body edge, and draw layer 3 with the metal and connect.
As shown in figure 3, the ontology both sides of the edge are continuously made of several concave-convexes, undulate 6.Pass through waveform
6 edge can form hole when winding making, gold-plated fully to improve metal spraying adhesive force when being conducive to follow-up metal spraying process,
Ensure that metal draws the good electrical performance between layer 3 and the coat of metal 4, metal layer 1.
The utility model structure is suitable for two string structures or more string structures, edge thickening type coating or gradation type coating, and
The making of all kinds of wound capacitors of film roll, it is simple in structure, it is applied widely, it is not limited only to example described in the present embodiment.
Claims (3)
1. a kind of low noise is low to hold the thin film capacitor that declines, including at least two metal layers are superimposed to be formed one with dielectric layer interval
Body, the ontology both sides of the edge are equipped with metal and draw layer, it is characterised in that：In the ontology, each dielectric layer two sides
Along body edges are all extended to, adjacent metal layer both ends atlernating edge stays side, and is equipped with the coat of metal, the gold in Liu Bianchu
Belong to being equipped between coating and the metal layer and leave a blank, the coat of metal extends to the body edges, and draws with the metal
Go out layer connection.
2. low noise according to claim 1 is low to hold the thin film capacitor that declines, it is characterised in that：The ontology both sides of the edge by
Several concave-convexes are continuously constituted.
3. low noise according to claim 2 is low to hold the thin film capacitor that declines, it is characterised in that：The ontology both sides of the edge are in
Waveform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721676443.8U CN207637638U (en) | 2017-12-06 | 2017-12-06 | A kind of low noise is low to hold the thin film capacitor that declines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721676443.8U CN207637638U (en) | 2017-12-06 | 2017-12-06 | A kind of low noise is low to hold the thin film capacitor that declines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207637638U true CN207637638U (en) | 2018-07-20 |
Family
ID=62855529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721676443.8U Active CN207637638U (en) | 2017-12-06 | 2017-12-06 | A kind of low noise is low to hold the thin film capacitor that declines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207637638U (en) |
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2017
- 2017-12-06 CN CN201721676443.8U patent/CN207637638U/en active Active
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