CN2364549Y - Circuit protection arrangement - Google Patents
Circuit protection arrangement Download PDFInfo
- Publication number
- CN2364549Y CN2364549Y CN 99200303 CN99200303U CN2364549Y CN 2364549 Y CN2364549 Y CN 2364549Y CN 99200303 CN99200303 CN 99200303 CN 99200303 U CN99200303 U CN 99200303U CN 2364549 Y CN2364549 Y CN 2364549Y
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- CN
- China
- Prior art keywords
- heat energy
- protection device
- electricity
- circuit protection
- flexible member
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- 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
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Abstract
The utility model relates to a circuit protection device, which comprises electricity / heat energy conversion elements, an elastic element, a frame and an overcurrent protection device, wherein the first end of the elastic element is connected in series to the electricity /heat energy conversion elements by fusing materials, and the second end of the elastic element is fixed on the frame; when the electricity /heat energy conversion elements have high voltage, heat energy which is generated by the electricity / heat energy conversion elements having high voltage causes the fusing materials to melt, so that the elastic element is separated with the electricity / heat energy conversion elements. The electricity /heat energy conversion elements can be used as a rheostatic body with thermal sensitivity, the overcurrent protection device is connected in series with the elastic element, and the overcurrent protection device and the elastic element are in an integral forming. When a current which passes the overcurrent protection device is large than a preconcerted current value, the overcurrent protection device is fused.
Description
The utility model relates to a kind of circuit protection device, particularly a kind of circuit protection device that is provided with protection shell fragment and varistor.
Please refer to Fig. 1 and Fig. 2, Fig. 1 schematic diagram in parallel that be circuit protection device 10 of the prior art with electric device 12, Fig. 2 is the schematic diagram of circuit protection device 10 of the prior art.General circuit protective device 10 is to be used for being in parallel with an electric device 12; when abnormally high-voltage occurring; emergency situations such as lightning thunderbolt for example; in addition in electric device 12 two ends when (being A shown in Figure 1, B two-end-point); circuit protection device 10 can begin conducting because of the high voltage across A, B two-end-point simultaneously; the caused instantaneous large-current of high voltage this moment can successfully be guided, and therefore, instantaneous large-current will can not pass through electric device 12.If electric device 12 is not in parallel with circuit protection device 10, when abnormally high-voltage or surging take place, the powerful electric current electric device 12 of will directly flowing through, and cause electric device 12 to damage.Therefore, circuit protection device 10 can be used to protect electric device 12, avoids electric device 12 to damage because of the super-high-current of flowing through.
Common circuit protection device 10 includes a varistor 14 and a Thermal Cutoffs 16, and varistor 14 is connected with Thermal Cutoffs 16, and Thermal Cutoffs 16 is close to varistor 14 next doors, is used for responding to the variations in temperature of varistor 14.Under normal voltage; the resistance of varistor 14 is quite big; therefore can not flow through circuit protection device 10 but flow directly to electric device 12 of electric current so that normal operating current to be provided; under this situation; circuit protection device 10 can be considered off state or does not exist, and therefore can not influence the normal operation of electric device 12.
After load current that varistor 14 is born is higher than a predetermined voltage, varistor 14 can begin the conducting electric current and produce heat energy, and when abnormally high-voltage or surging generation, the load voltage that varistor 14 is born will be higher than predetermined voltage, therefore varistor 14 can begin conducting, make powerful electric current from wherein by and produce a large amount of heat energy, Thermal Cutoffs 16 was sensed the heat energy that varistor 14 produces and temperature was raise gradually this moment.When electric current is excessive when causing a large amount of heat energy; can make that Thermal Cutoffs 16 is fused; a warning signal can occur and inform that user's electric protective device 10 has damaged, can learn that electric device 12 runs into emergency situations is arranged, and can be inspected with the maintenance system normal operation so the user makes.
Because Thermal Cutoffs 16 is two fully independently elements with varistor 14, during fabrication, needs by hand Thermal Cutoffs 16 is close to varistor 14 and just may make Thermal Cutoffs 16 experience the temperature of varistor 14 and have an effect.If; Thermal Cutoffs 16 separates with varistor 14 because of external collision; or the feeling ability of its temperature is affected because the foreign material in the environment cover; then Thermal Cutoffs 16 and varistor 14 just can't correctly be brought into play defencive function, and electric device 12 in parallel is suffered damage.
Main purpose of the present utility model is to provide that a kind of cost is low, the circuit protection device of dependable performance.
For the utility model that achieves the above object is taked following measure:
Circuit protection device of the present utility model comprises: electricity/transition element of heat energy;
Electricity/transition element of heat energy, when the voltage that it bore is higher than a scheduled voltage, but conducting electric current and electric energy conversion produced into heat energy;
It is characterized in that, also comprise: a flexible member and a framework;
Flexible member comprises two ends, and first end is series on electricity/transition element of heat energy with hot melt material, and second end is fixed on the framework;
When electricity/transition element of heat energy produced current lead-through because of high voltage, the heat energy that electricity/transition element of heat energy produced made hot melt material fusing, and first end of flexible member is separated with electricity/transition element of heat energy and formed and open circuit.
Described circuit protection device is characterized in that, described electricity/transition element of heat energy is a thermal sensitivity varistor.
Described circuit protection device is characterized in that, described flexible member is a protection shell fragment.
Described circuit protection device is characterized in that, described hot melt material is a scolding tin.
Described circuit protection device is characterized in that, described scolding tin is low melting point scolding tin.
Described circuit protection device is characterized in that, comprises that also one is used for protecting the housing of described electricity/transition element of heat energy and flexible member, and electricity/transition element of heat energy is arranged in the housing, and described framework then is the part of housing.
Described circuit protection device is characterized in that, also comprises an overcurrent protective device, is series at second end of described flexible member;
When the electric current by overcurrent protective device during greater than a predetermined current value, overcurrent protective device can Yin Gaore and fused.
Described circuit protection device is characterized in that, described overcurrent protective device is arranged between first end and second end of described flexible member, and makes in integrally formed mode with described flexible member.
Described circuit protection device is characterized in that, described overcurrent protective device and described flexible member are made with a thin thin copper sheet.
As follows to feature description of the present utility model in conjunction with the accompanying drawings:
The accompanying drawing simple declaration
Fig. 1 is the circuit protection device of the prior art schematic diagram in parallel with electric device.
Fig. 2 is the schematic diagram of circuit protection device of the prior art.
Fig. 3 is the schematic diagram of the embodiment of the utility model circuit protection device.
Fig. 4 is the schematic diagram that the protection shell fragment of Fig. 3 circuit protection device separates with varistor.
Please refer to Fig. 3, Fig. 3 is the schematic diagram of the utility model circuit protection device 20 embodiment.Circuit protection device 20 usefulness industry is in parallel with electric device 12, with protection electric device 12.Circuit protection device 20 includes that a housing 28, a varistor (varistor) 22 are located in the housing 28, a protection shell fragment 24, an overcurrent protective device 26 are located on the protection shell fragment 24, and a cylindricality pin 29.Housing 28 is used for protecting varistor 22 and protection shell fragment 24, and framework 34 then is the part of housing 28.Protection shell fragment 24 includes first and second end 30,32, the second ends 32 and is fixed on the framework 34.Therefore, when circuit protection device 20 and electric device 12 were in parallel, as shown in Figure 1, cylindricality pin 29 was electrically connected on contact A, and second end 32 of protection shell fragment 24 is electrically connected on contact B place.First end 30 of protection shell fragment 24 is welded on the varistor 22 via low melting point scolding tin 33; make varistor 22, protection shell fragment 24, and one is series at overcurrent protective device 26 common formation one between first end 30 and second end 32 of protection shell fragment 24 circuit of connecting.
Wherein, overcurrent protective device 26 is to make in integrally formed mode with a thin thin copper sheet 36 with protection shell fragment 24, and overcurrent protective device 26 forms via cutting out the square hole of a strip on the copper sheet 36.
Please refer to Fig. 4, Fig. 4 is the schematic diagram that the protection shell fragment 24 of Fig. 3 circuit protection device 20 separates with varistor 22.When the load voltage that is born when varistor 22 was higher than a predetermined voltage, varistor 22 will begin the conducting electric current and produce heat energy.And when abnormal voltage or surging betided A, B two-end-point, the load voltage that varistor 22 is born will be higher than predetermined voltage, and at this moment, varistor 22 beginning conductings make the powerful conducting electric current circuit protection device 20 of flowing through.And varistor 22 can be with scolding tin 33 fusings because of heat energy that conducting produced, make to separate with varistor 22 with first end 30 of protecting shell fragment 24 and form and open circuit.
For fear of not making first end 30 of protection shell fragment 24 not separate fully with varistor 22 just in case scolding tin 33 melts fully; protect the shell fragment 24 and the phenomenon of varistor 22 to produce and cause big electric current to continue to flow through, the overcurrent protective device 26 in the circuit protection device 20 is generations that design is used for avoiding above-mentioned phenomenon.Because the area of the copper sheet at overcurrent protective device 26 places is little than other position of copper sheet 36; therefore when big electric current passes through current protective device 26, just can do sth. in advance fusing because of Gao Re, like this; just can guarantee circuit protection device 20 when big electric current passes through, be bound to form and open circuit.
Compared with prior art, the utlity model has following effect:
The circuit protection device 10 of employed Thermal Cutoffs 16 in the prior art; because protection shell fragment 24, scolding tin 33 and varistor 22 all are to be fixed in the housing 28; therefore circuit protection device 20 of the present utility model is not easy to be subjected to the influence of external environment, and can play consistently effect.In addition, because overcurrent protective device 26 is made with a thin thin copper sheet with protection shell fragment 24, so cost is very cheap.
The above only is preferred embodiment of the present utility model, and all equivalent variations and modifications of doing according to design of the present utility model all should belong within the protection range of the present utility model.
Claims (9)
1, a kind of circuit protection device comprises: electricity/transition element of heat energy;
Electricity/transition element of heat energy, when the voltage that it bore is higher than a scheduled voltage, but conducting electric current and electric energy conversion produced into heat energy;
It is characterized in that, also comprise: a flexible member and a framework;
Flexible member comprises two ends, and first end is series on electricity/transition element of heat energy with hot melt material, and second end is fixed on the framework;
When electricity/transition element of heat energy produced current lead-through because of high voltage, the heat energy that electricity/transition element of heat energy produced made hot melt material fusing, and first end of flexible member is separated with electricity/transition element of heat energy and formed and open circuit.
2, circuit protection device according to claim 1 is characterized in that, described electricity/transition element of heat energy is a thermal sensitivity varistor.
3, circuit protection device according to claim 1 and 2 is characterized in that, described flexible member is a protection shell fragment.
4, circuit protection device according to claim 1 is characterized in that, described hot melt material is a scolding tin.
5, circuit protection device according to claim 4 is characterized in that, described scolding tin is low melting point scolding tin.
6, circuit protection device according to claim 1 is characterized in that, comprises that also one is used for protecting the housing of described electricity/transition element of heat energy and flexible member, and electricity/transition element of heat energy is arranged in the housing, and described framework then is the part of housing.
7, circuit protection device according to claim 1 is characterized in that, also comprises an overcurrent protective device, is series at second end of described flexible member;
When the electric current by overcurrent protective device during greater than a predetermined current value, overcurrent protective device can Yin Gaore and fused.
8, circuit protection device according to claim 7 is characterized in that, described overcurrent protective device is arranged between first end and second end of described flexible member, and makes in integrally formed mode with described flexible member.
9, circuit protection device according to claim 7 is characterized in that, described overcurrent protective device and described flexible member are made with a thin thin copper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99200303 CN2364549Y (en) | 1999-01-11 | 1999-01-11 | Circuit protection arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99200303 CN2364549Y (en) | 1999-01-11 | 1999-01-11 | Circuit protection arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2364549Y true CN2364549Y (en) | 2000-02-16 |
Family
ID=33996315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99200303 Expired - Lifetime CN2364549Y (en) | 1999-01-11 | 1999-01-11 | Circuit protection arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2364549Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100358206C (en) * | 2003-04-10 | 2007-12-26 | 阿尔卑斯电气株式会社 | Heat protection device |
| CN100455245C (en) * | 2003-12-12 | 2009-01-28 | 乐金电子(天津)电器有限公司 | Overloading protection device for motor lin cleaner |
-
1999
- 1999-01-11 CN CN 99200303 patent/CN2364549Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100358206C (en) * | 2003-04-10 | 2007-12-26 | 阿尔卑斯电气株式会社 | Heat protection device |
| CN100455245C (en) * | 2003-12-12 | 2009-01-28 | 乐金电子(天津)电器有限公司 | Overloading protection device for motor lin cleaner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHISHEN SCIENCE & TECHNOLOGY CO. LTD. Free format text: FORMER NAME OR ADDRESS: ZHISHEN INDUSTRY CO., LTD |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Zhishen Science and Technology Co., Ltd. Patentee before: Zhishen Industrial Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: YUDONG PLASM TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHISHEN SCIENCE + TECHNOLOGY CO. LTD. Effective date: 20061229 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20061229 Address after: Wilmington Delaware Patentee after: Yudong Electric Slurry Technology Co., Ltd. Address before: Taiwan, China Patentee before: Zhishen Science and Technology Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: YUDONG PLASMA TECHNOLOGY CO., LTD. Free format text: FORMER NAME OR ADDRESS: YUDONG PLASM TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: The Wilmington, zip code: Patentee after: Yudong Plasm Technology Co., Ltd. Address before: The Wilmington, zip code: Patentee before: Yudong Electric Slurry Technology Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |