CN203406256U - Micro protection element having high breaking capacity - Google Patents
Micro protection element having high breaking capacity Download PDFInfo
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- CN203406256U CN203406256U CN201320530070.9U CN201320530070U CN203406256U CN 203406256 U CN203406256 U CN 203406256U CN 201320530070 U CN201320530070 U CN 201320530070U CN 203406256 U CN203406256 U CN 203406256U
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- fuse
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- protection element
- breaking capacity
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Abstract
The utility model relates to a micro protection element having high breaking capacity. The micro protection element comprises two sheet metal electrodes (1) spaced in certain distance, a metal fuse (2) welded to the two sheet metal electrodes (1), and copper electrodes (5), nickel electrodes (6) and tin electrodes (7) electroplated at the ends of the two sheet metal electrodes (1) for welding. The micro protection element is characterized in that the micro protection element also comprises an arc extinction material layer (3) and a matrix shell layer (4), the metal fuse (2) is wrapped in the extinction material layer (3), the metal fuse (2), the arc extinction material layer (3) and part of the sheet metal electrodes (1) are plastically encapsulated in the matrix shell layer (4), and the ends of the sheet metal electrodes (1) are exposed from the matrix shell layer (4). The micro protection element is advantaged by small size, low internal resistance, high surge resistance, high reliability and high breaking capacity, and a manufacturing process of the micro protection element is simple, thereby facilitating the continuous production.
Description
Technical field
The utility model relates to the miniature protection component of a kind of high breaking capacity, particularly a kind of a kind of miniature fuse that adopts two-layer compound high temperature resistant arc quenching material structure to form.
Background technology
The common structure of paster fuse mainly contains two kinds of forms, and the first is arranged in tubular shell thread fuse-link is unsettled, and body two ends are with end caps body and provide and being electrically connected to and the function of surface soldered of internal fuse.This class body material is generally commonly used pottery or glass and is made, its mechanical strength is higher, and toughness is not enough, if fuse is operated under high voltage, when overcurrent occurs and during fuse disjunction, the electric arc that blown fuse produces easily causes blowing of its body and breakage, causes the fuse can not safe action, in the time of seriously, can cause personal injury.The structure of another kind of paster fuse is for to be molded over fuse-link on a substrate surface, a more additional protective layer covers fuse-link, then at the two ends of fuse, forms two terminations to draw fuse-link and to carry out surface soldered.This class fuse substrate used thereof material is often pottery or PCB material; and protective layer material is often resin or low temperature glass; the antisurge ability of this structure fuse is general, and to take the structure that fuse is fuse-link poor; and when its size little to a certain extent after; under higher operating voltage during disjunction; electric arc also can cause protective layer or the substrate breakage of fuse, and damage product, even jeopardizes personal safety.
When design miniature patch fuse, in order to guarantee the ability of its safe disjunction, how effectively arc extinguishing has just become the focus of main concern.The different structure of corresponding fuse, its arc quenching method is also mainly fills arc quenching material and on fuse-link, prints two kinds of arc extinguishing coatings in fuse body, its mechanism of action is that arc quenching material is coated fuse-link, the electric arc producing during disjunction can be extinguished by arc quenching material, thereby has improved the breaking capacity of fuse.At present main conventional arc-quenching filler material is quartz sand or other inorganic particle, the weak point of this class graininess arc quenching material is that its charging efficiency is lower, and often because they can produce certain influence to the operating chacteristics of electrical fuse element compared with strong heat conductivility; In addition, the structure of this series products is often usingd pottery as insulation crust, and porcelain body itself does not have arc extinguishing ability, and its mechanical strength has a significant impact the breaking characteristics under high-voltage large current.The material being printed on fuse-link as arc extinguishing coating is mainly some organic resin or low temperature glass with ablation characteristics, but the resistance to elevated temperatures of these materials is poor, and thinner thickness during to melt coating, and arc extinguishing effect is also undesirable.
Summary of the invention
For the problems referred to above; the purpose of this utility model is to propose a kind of miniature protection component of high breaking capacity (fuse) that has; it mainly adopts the mode of the arc quenching material clad metal melts such as high-temperature silica gel or high temperature organic siliconresin; and with the whole plastic packaging of thermosetting resin, obtain having the product matrix shell structurre of aerogenesis arc extinguishing ability, by two-layer arc quenching material composite construction, realize the miniature fuse of the utility model high breaking capacity.
To achieve these goals; the utility model is taked following technical scheme: the miniature protection component of a kind of high breaking capacity; comprise the two metal sheets electrode being separated by a distance; be welded on the metal fuse on described two metal sheets electrode; plating, at copper electrode, nickel electrode and the tin electrode for welding of two metal sheets electrode tip, also comprises:
One arc quenching material layer, described metal fuse is wrapped in arc quenching material layer;
One matrix shell, described metal fuse, arc quenching material layer and part metals plate electrode plastic packaging are in matrix shell, and sheet metal electrode tip is exposed to outside matrix shell.
Described sheet metal electrode is copper or copper alloy, the shape that adopts mould punching moulding to need; The metal wire material that described metal fuse often adopts the electric conducting materials such as copper, copper alloy, nickel to make, type and the length of silk material, select according to the size of fuse and practical application; Described metal fuse and sheet metal determine by nation that process point is soldered to be connect, it has overcome some drawbacks that traditional scolding tin connects, such as the fluctuation of the electrical properties such as fuse products resistance, the binding site that scolding tin connects is subject to temperatures involved serious etc., and the fixed binding site of nation is subject to the impact of temperature hardly, and the efficiency that nation connects is surely very high, technique is very ripe; The bridge joint of described metal fuse and metal electrode film can adopt single welding, two and more parallel welding, around the multiple nation such as welding on glass wire, determine mode; Described arc quenching material passes through thick film screen printing process filling around metal fuse, to guarantee that product has stronger arc extinguishing ability; Described arc quenching material preferably can reach 300 ℃ of above high-temperature silica gel or high temperature silicone resin material by heatproof degree; Described matrix shell is by sheet metal electrode, metal fuse, arc quenching material integral body are placed on to marshalling in the tool coordinating with plastic package die, be put into again in the plastic package die that has reached uniform temperature, by Glass cement squeezing device, thermosetting resin injected fast to the hole part of mould forms; Product requirement two ends sheet metal electrode after described plastic packaging has at least 1/3 part to expose in housing outside, to form in the above welding electrode; Described welding electrode is first by the mode of electroplating, in sheet metal electrode two ends, to form layer of copper electrode, then forms one deck nickel electrode and tin electrode again.
The utility model is owing to taking above technical scheme, it has the following advantages: conventional using metal fuse often size is larger as the fuse of fuse-link, and the fuse-link that relatively thick/thin-film technique forms, metal fuse has the remarkable advantages such as internal resistance is low, antisurge ability is strong, it is a kind of very ripe technology that nation determines technique in the making of conventional diode, it is transplanted in the production of fuse, can realize easily metal fuse and by spot welding mode, be combined with between electrode slice, also get rid of the shortcoming that soldering brings; In addition, conventionally the arc quenching material adopting respectively has deficiency, the utility model is with two-layer compound arc quenching material structure, the high-temperature silica gel or the high temperature organic siliconresin arc quenching material that adopt, due to the carbon in organic resin is replaced for silicon, its tolerable temperature strengthens greatly, conventionally can bear 300 ℃ and above high temperature the long period, thereby has also improved the arc extinguishing ability of product; And, adopt thermosetting resin as matrix shell, than pottery or glass shell, there is larger toughness, under high-temperature electric arc effect, decompose and produce arc extinguishing gases, take away fast the heat of free metal melt, and to producing the liberation that disappears by free electron, also there is stronger arc extinguishing ability, two-layer compound arc quenching material structure has improved the breaking capacity of product greatly above, makes product can meet 250VAC/100A and above disjunction condition.
Accompanying drawing explanation
Fig. 1 is the product profile of miniature protection component in the utility model.
Fig. 2 is the vertical view that in the utility model, nation's order root metal fuse designs on sheet metal electrode.
Fig. 3 is the vertical view that in the utility model, fixed two metal fuses of nation design on sheet metal electrode.
Fig. 4 be in the utility model on sheet metal electrode nation determine the vertical view of wrapping wire metal fuse design.
Embodiment
The utility model proposes a kind of structure of high breaking capacity miniature fuse, the metal fuse of usining has lower internal resistance and high antisurge ability as fuse-link to guarantee product; Usining high-temperature silica gel or high temperature organic siliconresin improves the arc extinguishing ability of product as arc quenching material; Using thermosetting resin plastic packaging as product matrix shell to obtain having the housing of certain toughness and arc extinguishing ability.
Below in conjunction with drawings and Examples, structure of the present utility model is described in detail.
Be illustrated in figure 1 the product profile in the utility model with high breaking capacity miniature fuse, comprise two metal electrode films that are separated by a distance 1, adopt nation to determine process point and be soldered to the metal fuse 2 on metal electrode film 1, by thick film screen printing process filling, at metal fuse 2, play the arc quenching material 3 of arc extinguishing effect around, plastic packaging is lived metal electrode film 1, metal fuse 2 and arc quenching material 3, and form the matrix shell 4 of product shell, by electroplating technology, be deposited on the copper electrode 5 that metal electrode film 1 two ends are exposed at matrix shell 4 Outboard Sections, and the nickel electrode 6 and the tin electrode 7 that are coated on copper electrode 5 outsides.
Embodiment mono-
Using copper metal sheet as electrode slice 1, adopt the metal wire material of a CuAg10 composition as fuse 2, and make it at 1 formation bridge joint of two bronze medal sheet metal electrodes, as shown in Figure 2 by spot-welding technology; Again can heatproof degree the high temperature organic siliconresin of 400 ℃ be filled in around metal fuse 2, and solidify to form arc quenching material 3 at 250 ℃; Then copper sheet metal electrode 1, metal fuse 2, arc quenching material 3 are placed on to marshalling in the tool coordinating with plastic package die, be put in the plastic package die that has reached set point of temperature, the hole part of thermosetting resin being injected to mould fast by Glass cement squeezing device forms matrix shell 4 again; The last copper sheet metal electrode 1 that is first exposed at outside after plastic packaging forms copper electrode 5 by electroplating technology around, by plating mode, in copper electrode 5 outsides, form one deck nickel electrode 6 and tin electrode 7 again, obtain high breaking capacity miniature fuse of the present utility model.
Embodiment bis-
As shown in Figure 3, for improving the rated operational current of fuse products, adopt the technique of two metal fuses, 2 welding in parallel, thereby reduced the current value on every fuse, also the corresponding breaking capacity that improves product.
Other is with embodiment mono-.
Embodiment tri-
As shown in Figure 4, during the design of little current fuse, adopt metal fuse 2 on a glass wire 21 with insulating effect, and it is welded on two sheet metal electrodes 1 as a whole.
Other is with embodiment mono-.
Fuse in the utility model has the remarkable advantages such as volume is little, internal resistance is low, withstanding surge is strong, reliability is high, safe breaking capacity is good, manufacturing process is simple, the sheet metal electrode 1 of design quantity can be by adopting whole piece metal sheet the one-shot forming of mould punching technique, matrix shell 4 also can be by be loaded into the product with design quantity an injecting glue in plastic package die simultaneously, thereby can realize the large-scale continuous production of product, enhance productivity.
Claims (3)
1. the miniature protection component of high breaking capacity; comprise the two metal sheets electrode (1) being separated by a distance; be welded on the metal fuse (2) on described two metal sheets electrode (1); plating, at copper electrode for welding (5), nickel electrode (6) and the tin electrode (7) of two metal sheets electrode (1) termination, is characterized in that this protection component also has:
One arc quenching material layer (3), metal fuse (2) is wrapped in arc quenching material layer (3);
One matrix shell (4), metal fuse (2), arc quenching material layer (3) and part metals plate electrode (1) plastic packaging are in matrix shell (4), and sheet metal electrode (1) termination is exposed to outside matrix shell (4).
2. the miniature protection component of high breaking capacity according to claim 1, is characterized in that: the material of described arc quenching material layer (3) be can heatproof degree in more than 300 ℃ high-temperature silica gels or high temperature silicone resin material.
3. the miniature protection component of high breaking capacity according to claim 1 and 2, is characterized in that: described metal fuse (2) adopts single welding, two and more parallel welding or around the welding manner on glass wire (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320530070.9U CN203406256U (en) | 2013-08-28 | 2013-08-28 | Micro protection element having high breaking capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320530070.9U CN203406256U (en) | 2013-08-28 | 2013-08-28 | Micro protection element having high breaking capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203406256U true CN203406256U (en) | 2014-01-22 |
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ID=49942179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320530070.9U Expired - Lifetime CN203406256U (en) | 2013-08-28 | 2013-08-28 | Micro protection element having high breaking capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203406256U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106486326A (en) * | 2016-09-14 | 2017-03-08 | 南京萨特科技发展有限公司 | A kind of anti-explosion protector and manufacture method |
| CN107210171A (en) * | 2015-02-05 | 2017-09-26 | 内桥艾斯泰克股份有限公司 | Protection element |
| WO2020224135A1 (en) * | 2019-05-07 | 2020-11-12 | 南京萨特科技发展有限公司 | Protection element with grid inside insulation tube |
-
2013
- 2013-08-28 CN CN201320530070.9U patent/CN203406256U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107210171A (en) * | 2015-02-05 | 2017-09-26 | 内桥艾斯泰克股份有限公司 | Protection element |
| CN106486326A (en) * | 2016-09-14 | 2017-03-08 | 南京萨特科技发展有限公司 | A kind of anti-explosion protector and manufacture method |
| CN106486326B (en) * | 2016-09-14 | 2019-05-03 | 南京萨特科技发展有限公司 | A kind of anti-explosion protector and manufacturing method |
| WO2020224135A1 (en) * | 2019-05-07 | 2020-11-12 | 南京萨特科技发展有限公司 | Protection element with grid inside insulation tube |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |
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| CX01 | Expiry of patent term |