CN201229818Y - Belt pin type high molecular PTC over-current over-warming protection element - Google Patents
Belt pin type high molecular PTC over-current over-warming protection element Download PDFInfo
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- CN201229818Y CN201229818Y CNU2008201504759U CN200820150475U CN201229818Y CN 201229818 Y CN201229818 Y CN 201229818Y CN U2008201504759 U CNU2008201504759 U CN U2008201504759U CN 200820150475 U CN200820150475 U CN 200820150475U CN 201229818 Y CN201229818 Y CN 201229818Y
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- pin
- foil electrode
- polymer ptc
- metal foil
- protection element
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Abstract
The utility model discloses a belt-shaped pin type polymer PTC over-current over-heat protection component, which comprises a metal belt-shaped pin and a polymer PTC chip, wherein, the polymer PTC chip comprises a polymer PTC material layer, a case and an upper and a lower metal foil electrode slices. The case is a frame structure and is centrally provided with a through hole; the upper and the lower metal foil electrode slices are respectively pasted on the upper and the lower surfaces of the case; the polymer PTC material layer is closed in a hollow cavity between the metal foil electrode slice and the through hole of the case; the shape of the polymer material layer adapts to the shape of the through hole of the case; the metal belt-shaped pin comprises an upper pin and a lower pin, wherein, the upper pin is welded and fixed on the metal foil electrode slice on the upper surface; the lower pin is welded and fixed on the metal foil electrode slice on the lower surface. The utility model has the advantages of directly placing the polymer PTC material into the case, not contacting outer air, greatly improving weatherability and having simple structure and good weatherability.
Description
Technical field
The utility model relates to a kind of electronic devices and components that are used for the excess-current excess-temperature protection, is specifically related to a kind of banded pin-type polymer PTC overflow over-temperature protection element and manufacture method thereof.
Background technology
Functional high molecule material is the focus of present material science research, and the high molecular composite conductive material with ptc characteristics is outstanding person wherein, and academia's industrial circle being is all is being researched and developed it enthusiastically so far.So-called high molecular PTC composite conducting material has the high molecular composite conductive material of PTC (positive temperature coefficient " positive temperature coefficient ") resistance characteristic exactly.That is to say that in certain temperature range, the resistivity of this electric conducting material self can increase with the rising of temperature.This excess-current excess-temperature protection element is composited by macromolecular material filled conductive particle.Described macromolecular material comprises thermosetting polymer and thermoplastic polymer, and thermoplastic polymer comprises polyethylene, ethylene-methyl acrylate copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, Kynoar, polytrifluorochloroethylene etc.; Thermosetting polymer mainly contains epoxy resin.Conducting particles comprises carbon black and metal dust, and the surface is coated with graphite, carbon black, ceramic fine bead, the glass microballoon of metal.Metal dust commonly used comprises silver powder, copper powder, aluminium powder, nickel powder, stainless steel powder.
Utilize the high molecular PTC composite conducting material to make the macromolecule excess-current excess-temperature protection element, can be used as the excess-current excess-temperature protective device of circuit.It is connected in the circuit and uses, and lower by the electric current of macromolecule excess-current excess-temperature protection element during the circuit operate as normal, its temperature is lower, presents low resistance state, can not influence the circuit operate as normal.And when the big electric current that causes by fault when this macromolecule excess-current excess-temperature protection element, its temperature can raise suddenly, causes that himself resistance value becomes greatly suddenly, so just makes circuit present approximate off state, thereby plays the protective circuit effect.After fault was got rid of, the temperature of macromolecule excess-current excess-temperature protection element descended, and its resistance value can return to the low resistance state again.Therefore, this is a kind of fuse that can recover automatically in fact, has been widely applied in the fields such as computer, communication equipment, automotive electronics, family expenses and Industry Control electric equipment.
The macromolecule excess-current excess-temperature protection element is widely used in the overcurrent protection field, and the miniaturization of electronic devices and components is present development trends, and this also has higher requirement to the encapsulation technology of macromolecule excess-current excess-temperature protection element.Because the side of excess-current excess-temperature protection element especially for the excess-current excess-temperature protection element that contains metallic stuffing, often is directly exposed in the air, is subjected to intrusion such as oxygen and steam in the external environment easily, causes element weather resistance variation.
The utility model content
The banded pin-type polymer PTC overflow over-temperature protection element that technical problem to be solved in the utility model provides is simple in structure, weather resistance is good; make high molecular PTC composite conducting material wherein to isolate fully with air; improve weather resistance, overcome the above-mentioned defective that prior art exists.
The technical scheme of the utility model technical solution problem is as follows:
A kind of banded pin-type polymer PTC overflow over-temperature protection element, comprise metal band-shaped pin and high polymer PTC chip, described high polymer PTC chip comprises the high molecular PTC material layer, housing and paste metal foil electrode sheet respectively in the high polymer PTC chip upper and lower surface, it is characterized in that, described housing is a frame type structure, its center is provided with through hole, described metal foil electrode sheet up and down sticks on respectively on the upper surface and lower surface of housing, described high molecular PTC material layer is enclosed in the cavity between the through hole of metal foil electrode sheet and housing, and the shape of the shape of described polymer material layer and the through hole of housing adapts; Described metal band-shaped pin comprises pin and following pin, and last pin is weldingly fixed on the upper surface metal foil electrode sheet, and following pin is weldingly fixed on the lower surface metal foil electrode sheet.
Compared with prior art, the banded pin-type polymer PTC overflow over-temperature protection element of the utility model does not contact extraneous air by the high molecular PTC material is set directly in the housing, and weatherability improves greatly, has advantages such as simple in structure, good weatherability.
Described case material is an organic polymer composite, comprises macromolecule resin and packing material, also can include only macromolecule resin.Described macromolecule resin can be selected from: one or more mixtures in polyethylene, ethylene-methyl acrylate copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, polypropylene, polybutene, Kynoar, polytrifluorochloroethylene, nylon, polyvinyl chloride, phenolic resins, epoxy resin, polyimide resin, polyflon, bismaleimide-triazine resin, thermosetting polyphenylene ether resin, the mylar; Packing material can be selected from: paper, glass fabric, aramid fiber non woven fabric, carbon black, magnesium hydroxide, aluminium hydroxide, kaolin, white carbon, calcium carbonate, one or more mixtures of titanium dioxide.
Described housing can use binding agent with being connected of metal foil electrode sheet, also can not use binding agent, directly hot melting cohesion.
Description of drawings
Fig. 1 is the contour structures schematic diagram of an embodiment of the banded pin-type polymer PTC overflow over-temperature protection element of the utility model.
Fig. 2 is the decomposition texture schematic diagram of the macromolecule PCT chip of embodiment among Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1, Fig. 2 shows an example structure schematic diagram of the banded pin-type polymer PTC overflow over-temperature protection element of the utility model, it comprises metal band-shaped pin and macromolecule PCT chip, described high polymer PTC chip comprises high molecular PTC material layer 2, housing 3 and paste copper foil electrode sheet 1 and 1 ' respectively in the high polymer PTC chip upper and lower surface, described housing 3 is a frame type structure, the center is provided with square through hole 4, described metal foil electrode sheet 1 and 1 ' up and down sticks on respectively on the upper surface and lower surface of housing 3, described high molecular PTC material layer 2 is enclosed in metal foil electrode sheet 1,1 ' and the through hole of housing 3 between cavity in, the shape of the shape of described polymer material layer 2 and the through hole of housing 4 adapts; Described metal band-shaped pin comprises pin 5 and following pin 6, and described pin 5 one ends of going up stretch out in outside the macromolecule PCT chip, and the other end is fixedly welded on the right side local surfaces of upper surface copper foil electrode slice 1; Described pin 6 one ends down stretch out in outside the macromolecule PCT chip, and the other end is fixedly welded on the left side local surfaces of lower surface copper foil electrode sheet 1 ', and described pin 6 is down arranged with respect to the high polymer PTC chip reverse symmetry with last pin 5.Welding manner is soldering.
The described pin 5 of going up is the banded nickel sheet of 0.125mm for thickness with following pin 6.
Claims (6)
1. banded pin-type polymer PTC overflow over-temperature protection element, comprise metal band-shaped pin and macromolecule PCT chip, described high polymer PTC chip comprises high molecular PTC material layer (2), housing (3) and paste metal foil electrode sheet (1 respectively in the high polymer PTC chip upper and lower surface, 1 '), it is characterized in that, described housing (3) is a frame type structure, its center is provided with through hole (4), described metal foil electrode sheet (1 up and down, 1 ') stick on respectively on the upper surface and lower surface of housing (3), described high molecular PTC material layer (2) is enclosed in metal foil electrode sheet (1,1 ') and in the cavity between the through hole of housing (3), the shape of the shape of described polymer material layer and the through hole of housing adapts; Described metal band-shaped pin comprises pin (5) and following pin (6), and last pin (5) is weldingly fixed on the upper surface metal foil electrode sheet (1), and following pin (6) is weldingly fixed on the lower surface metal foil electrode sheet (1 ').
2. banded pin-type polymer PTC overflow over-temperature protection element as claimed in claim 1 is characterized in that described upper and lower surface metal foil electrode slice (1,1 ') is the copper foil electrode sheet.
3. banded pin-type polymer PTC overflow over-temperature protection element as claimed in claim 1 is characterized in that described housing (3) is the frame type structure, and its central through hole is a square through hole.
4. banded pin-type polymer PTC overflow over-temperature protection element as claimed in claim 3 is characterized in that, described pin (5) one ends of going up stretch out in outside the macromolecule PCT chip, and the other end is fixed on the right side local surfaces of upper surface copper foil electrode slice (1).
5. banded pin-type polymer PTC overflow over-temperature protection element as claimed in claim 4; it is characterized in that; described pin (6) one ends down stretch out in outside the macromolecule PCT chip; the other end is fixed on the left side local surfaces of lower surface copper foil electrode sheet (1 '), and described pin (6) is down arranged with respect to the high polymer PTC chip reverse symmetry with last pin (5).
6. banded pin-type polymer PTC overflow over-temperature protection element as claimed in claim 1 is characterized in that, described upward pin (5) and following pin (6) are banded nickel sheet, its thickness 0.05～0.50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201504759U CN201229818Y (en) | 2008-07-02 | 2008-07-02 | Belt pin type high molecular PTC over-current over-warming protection element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201504759U CN201229818Y (en) | 2008-07-02 | 2008-07-02 | Belt pin type high molecular PTC over-current over-warming protection element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201229818Y true CN201229818Y (en) | 2009-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201504759U Expired - Lifetime CN201229818Y (en) | 2008-07-02 | 2008-07-02 | Belt pin type high molecular PTC over-current over-warming protection element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201229818Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104992802A (en) * | 2015-02-04 | 2015-10-21 | 上海长园维安电子线路保护有限公司 | Surface mounted overcurrent protection element |
| CN107275017A (en) * | 2017-06-14 | 2017-10-20 | 上海萃励电子科技有限公司 | A kind of PTC overflow protecting elements for eliminating the influence of accumulation heat |
| CN108447635A (en) * | 2018-05-08 | 2018-08-24 | 上海克拉电子有限公司 | A kind of aluminum shell PTC braking resistors |
-
2008
- 2008-07-02 CN CNU2008201504759U patent/CN201229818Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104992802A (en) * | 2015-02-04 | 2015-10-21 | 上海长园维安电子线路保护有限公司 | Surface mounted overcurrent protection element |
| CN104992802B (en) * | 2015-02-04 | 2019-07-23 | 上海长园维安电子线路保护有限公司 | Surface attaching type overcurrent protecting element |
| CN107275017A (en) * | 2017-06-14 | 2017-10-20 | 上海萃励电子科技有限公司 | A kind of PTC overflow protecting elements for eliminating the influence of accumulation heat |
| CN107275017B (en) * | 2017-06-14 | 2020-04-14 | 上海萃励电子科技有限公司 | PTC overcurrent protection element capable of eliminating influence of accumulated heat |
| CN108447635A (en) * | 2018-05-08 | 2018-08-24 | 上海克拉电子有限公司 | A kind of aluminum shell PTC braking resistors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090429 |