CN203799963U - Circuit protection device - Google Patents
Circuit protection device Download PDFInfo
- Publication number
- CN203799963U CN203799963U CN201420179960.4U CN201420179960U CN203799963U CN 203799963 U CN203799963 U CN 203799963U CN 201420179960 U CN201420179960 U CN 201420179960U CN 203799963 U CN203799963 U CN 203799963U
- Authority
- CN
- China
- Prior art keywords
- protection device
- circuit
- explosion
- circuit protection
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004880 explosion Methods 0.000 claims abstract description 43
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 210000002268 wool Anatomy 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 230000009977 dual effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Details Of Resistors (AREA)
- Fuses (AREA)
Abstract
The utility model discloses a circuit protection device comprising a shell and two metal leads which are extended from the inside of the shell to the outside of the shell. An anti-explosion resistor and a temperature fuse are serially connected between the two metal leads successively. Both of the anti-explosion resistor and the temperature fuse are arranged in the inner cavity of the shell. According to the circuit protection device of the utility model, the anti-explosion resistor and the temperature fuse which are serially connected are arranged in the shell, and at the same time, the anti-explosion resistor and the temperature fuse are used as end electrodes of the circuit protection device through the metal leads. The temperature fuse is fused when the working temperature exceeds the specification value so as to cut off the loop and protect the circuit. The anti-explosion resistor is fused when the overcurrent condition occurs in the circuit, so phenomenons, such as explosion, combustion, etc., will not occur, and the advantage of high safety can be realized. Through the above structure, dual protection functions including the overcurrent protection and the temperature protection can be realized. Moreover, the circuit protection device has a simple structure, and what an operator needs to do is to connect the metal leads with a target circuit in the assembly process, so the advantage of convenient assembly can be realized.
Description
Technical field
The utility model relates to a kind of electronic device, particularly relates to a kind of circuit protection device.
Background technology
In the design process of circuit, need to consider the safety issue of circuit operation.For example, because electric current input is excessive or short circuit appears in certain components and parts, and cause circuit to occur flow problem, in this case, be easy to burn out circuit or electronic component in circuit.
Traditional solution is that the fuse wire of connecting in the loop of circuit, when electric current is excessive, blown fuse, circuit loop open circuit, thus prevent that element from burning out because of overcurrent, and common fuse is when fusing, have the situation generation of blast or burning.Along with the complexity of circuit is more and more higher, when tackling flow problem, also to consider temperature protection.If adopt a plurality of fuses to protect, can increase the number of electronic components of circuit, complexity in circuits improves.And in circuits assembly, electronic component is more, assembly difficulty is just higher.
Utility model content
Based on this, be necessary the problem for conventional art, provide a kind of simple in structure, assembling easily, and possess the circuit protection device of temperature and overcurrent protection function simultaneously.
A circuit protection device, comprises housing and in housing, extends to two metal lead wires housing.Between two metal lead wires, be in series with successively Anti-explosion resistor and Thermal Cutoffs, Anti-explosion resistor and Thermal Cutoffs are all located at the inner chamber of housing.
In a kind of embodiment, Anti-explosion resistor comprises the ceramic package of resistance and parcel resistance, is filled with arc extinguishing fat between ceramic package and resistance therein.
In a kind of embodiment, between housing and Anti-explosion resistor, be filled with silica wool therein.
In a kind of embodiment, be provided with holder in housing therein, described holder is provided with groove, and Anti-explosion resistor and Thermal Cutoffs are fixed in groove.
In a kind of embodiment, housing is plastic casing therein.
In a kind of embodiment, Anti-explosion resistor and Thermal Cutoffs are put side by side therein, between Anti-explosion resistor and Thermal Cutoffs, are provided with separate layer.
Foregoing circuit protective device is provided with Anti-explosion resistor and the Thermal Cutoffs of series connection, simultaneously the termination electrode as circuit protection device by metal lead wire in housing.Thermal Cutoffs fuses when working temperature surpasses specification value, thus cut-off loop, protective circuit.Anti-explosion resistor when there is overcurrent in circuit, self blowout current and do not blast, the phenomenon such as burning, safety is high.By above-mentioned structure, realize the double protection functions of overcurrent protection and temperature protection.And this circuit protection device simple in structure, is connected metal lead wire during assembling with objective circuit, easy to assembly.
Anti-explosion resistor comprises the resistance of internal layer, the arc extinguishing fat in intermediate layer and outer field ceramic package, when electric current is excessive, and the fusing of the resistance of internal layer, resistive outer skin is wrapped up by arc extinguishing fat simultaneously, prevent that electric spark from producing, outermost layer is ceramic package, plays effect heat insulation and insulation.
Silica wool has the feature of insulation and good heat resistance, and when fusing appears in the Anti-explosion resistor in housing and Thermal Cutoffs, silica wool can reduce the destruction of blown fuse to housing.
Anti-explosion resistor and Thermal Cutoffs are fixed in the groove of holder, install firmly and conveniently, are conducive on the one hand assembling, also can improve on the other hand the structural stability of circuit protection device.
The price comparison of plastic casing is cheap, and plasticity is high and play insulating effect.
The Anti-explosion resistor of putting side by side and Thermal Cutoffs can be saved its shared space, utilize separate layer that Anti-explosion resistor and Thermal Cutoffs are separated simultaneously, avoid two phase mutual interference when work.
Accompanying drawing explanation
Fig. 1 is the structural representation of the circuit protection device of a kind of execution mode of the present utility model;
Fig. 2 is the profile of the circuit protection device shown in Fig. 1;
In accompanying drawing, the implication of each label is:
10-circuit protection device, 100-housing, 110-holder, 111-groove, 200-metal lead wire, 300-Anti-explosion resistor, 310-resistance, 320-ceramic package, 330-arc extinguishing fat, 400-Thermal Cutoffs, 500-silica wool, 600-separate layer.
Embodiment
Referring to attached Fig. 1 and 2, it is respectively overall structure schematic diagram and the profile of the circuit protection device 10 of a kind of execution mode of the present utility model.
Circuit protection device 10 comprises: housing 110 and extend to two metal lead wires 200 housing 110 in housing 110, its middle shell 110 is rectangular-shaped.Between two metal lead wires 200, be in series with successively Anti-explosion resistor 300 and Thermal Cutoffs 400, and this Anti-explosion resistor 300 and Thermal Cutoffs 400 are all located among the inner chamber of housing 110.
Particularly, in the present embodiment, Anti-explosion resistor 300 and Thermal Cutoffs 400 are put side by side, and are provided with separate layer 600 between Anti-explosion resistor 300 and Thermal Cutoffs 400, and this separate layer 600 is potsherd.In addition, Thermal Cutoffs 400 and Anti-explosion resistor 300 are Stripwise construction design, inner chamber at housing 110 is provided with a holder 110, this holder 110 is provided with two strip grooves 111 that match with the shape of Anti-explosion resistor 300 and Thermal Cutoffs 400 respectively, and Anti-explosion resistor 300 and Thermal Cutoffs 400 are fixed on respectively in two above-mentioned grooves.Meanwhile, between housing 110 and Anti-explosion resistor 300, be filled with silica wool 500.
Anti-explosion resistor 300 is three-decker from the inside to the outside, specifically comprises: resistance 310, parcel resistance 310 ceramic package 320 and be filled in ceramic package 320 and resistance 310 between arc extinguishing fat 330.
In the present embodiment, housing 110 can also be the shell of constructed in plastic material, and the relative other materials of its price is low, and the plasticity of plastics is stronger, can make various shapes, and plays certain insulating effect.
Metal lead wire 200 is in the present embodiment specially copper lead-in wire, can be silver wire or gold wire or other lead-in wires in other embodiments.
Comprehensively above-mentioned, this circuit protection device 10 is provided with Anti-explosion resistor 300 and the Thermal Cutoffs 400 of series connection in housing 110, simultaneously the termination electrode as circuit protection device 10 by metal lead wire 200.Thermal Cutoffs 400 fuses when working temperature surpasses specification value, thus cut-off loop, protective circuit.Anti-explosion resistor 300 when there is overcurrent in circuit, self fusing and do not blast, the phenomenon such as burning, safe.By above-mentioned structure, realize the double protection functions of overcurrent protection and temperature protection.And this circuit protection device 10 simple in structure, is connected metal lead wire 200 during assembling with objective circuit, easy to assembly.
In addition, Anti-explosion resistor 310 comprises the resistance 310 of internal layer, the arc extinguishing fat 330 in intermediate layer and outer field ceramic package 320, when electric current is excessive, resistance 310 fusing of internal layer, the outer field arc extinguishing fat 330 of resistance 310 is wrapped in resistance 310 simultaneously, while preventing resistance 310 fusing, produce electric spark, outermost layer is ceramic package 320, plays effect heat insulation and insulation.Silica wool 500 has the feature of insulation and good heat resistance, when fusing appears in the Anti-explosion resistor 300 in housing 110 and Thermal Cutoffs 400, when silica wool 500 can avoid blown fuse, the electronic component of circuit protection device 10 adjacency is caused to damage.Anti-explosion resistor 300 and Thermal Cutoffs 400 are fixed in groove, install firmly and conveniently, are conducive on the one hand assembling, also can improve on the other hand the structural stability of circuit protection device 10.The Anti-explosion resistor 300 of putting side by side and Thermal Cutoffs 400 can be saved its shared space, utilize separate layer 600 that Anti-explosion resistor 300 and Thermal Cutoffs 400 are separated simultaneously, avoid two phase mutual interference when work.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (6)
1. a circuit protection device; comprise housing and in housing, extend to two metal lead wires housing; it is characterized in that, between described two metal lead wires, be in series with successively Anti-explosion resistor and Thermal Cutoffs, described Anti-explosion resistor and described Thermal Cutoffs are all fixed on the inner chamber of described housing.
2. circuit protection device according to claim 1, is characterized in that, described Anti-explosion resistor comprises the ceramic package of resistance and the described resistance of parcel, between described ceramic package and described resistance, is filled with arc extinguishing fat.
3. circuit protection device according to claim 1, is characterized in that, between described housing and described Thermal Cutoffs, is filled with silica wool.
4. circuit protection device according to claim 1, is characterized in that, the inner chamber of described housing is provided with holder, and described holder is provided with groove, and described Anti-explosion resistor and described Thermal Cutoffs are all fixed in described groove.
5. circuit protection device according to claim 1, is characterized in that, described housing is plastic casing.
6. circuit protection device according to claim 1, is characterized in that, described Anti-explosion resistor and described Thermal Cutoffs are put side by side, between described Anti-explosion resistor and described Thermal Cutoffs, is provided with separate layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179960.4U CN203799963U (en) | 2014-04-14 | 2014-04-14 | Circuit protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179960.4U CN203799963U (en) | 2014-04-14 | 2014-04-14 | Circuit protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203799963U true CN203799963U (en) | 2014-08-27 |
Family
ID=51382158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420179960.4U Expired - Lifetime CN203799963U (en) | 2014-04-14 | 2014-04-14 | Circuit protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203799963U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9972991B2 (en) | 2016-05-20 | 2018-05-15 | Polytronics Technology Corp. | Protection device and circuit protection apparatus containing the same |
| CN108766853A (en) * | 2018-06-08 | 2018-11-06 | 佛山市仁星电气有限公司 | The main temperature controller of packaged type and temperature control device |
| CN109210434A (en) * | 2018-10-19 | 2019-01-15 | 苏州瑞来特思机械设备有限公司 | A kind of explosion-proof indicating lamp |
| CN112562945A (en) * | 2020-12-22 | 2021-03-26 | 东莞市贝特电子科技股份有限公司 | Fuse resistor with low surface temperature and preparation method thereof |
-
2014
- 2014-04-14 CN CN201420179960.4U patent/CN203799963U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9972991B2 (en) | 2016-05-20 | 2018-05-15 | Polytronics Technology Corp. | Protection device and circuit protection apparatus containing the same |
| CN108766853A (en) * | 2018-06-08 | 2018-11-06 | 佛山市仁星电气有限公司 | The main temperature controller of packaged type and temperature control device |
| CN109210434A (en) * | 2018-10-19 | 2019-01-15 | 苏州瑞来特思机械设备有限公司 | A kind of explosion-proof indicating lamp |
| CN112562945A (en) * | 2020-12-22 | 2021-03-26 | 东莞市贝特电子科技股份有限公司 | Fuse resistor with low surface temperature and preparation method thereof |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |