CN204760671U - Power frequency over -current protection supply socket - Google Patents
Power frequency over -current protection supply socket Download PDFInfo
- Publication number
- CN204760671U CN204760671U CN201520358006.6U CN201520358006U CN204760671U CN 204760671 U CN204760671 U CN 204760671U CN 201520358006 U CN201520358006 U CN 201520358006U CN 204760671 U CN204760671 U CN 204760671U
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- China
- Prior art keywords
- jack
- live wire
- zero line
- utility
- current
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- Expired - Fee Related
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Abstract
The utility model discloses a power frequency over -current protection supply socket, including casing and the plug is connected with the casing, be equipped with on the casing with ground wire welded ground connection jack, with zero line welded zero line jack, with live wire welded live wire jack, switch, pilot lamp, PTC thermistor and current -limiting resistor, before switch places the live wire jack in, place in between the switch live wire and zero line later after current -limiting resistor and the pilot lamp series connection, PTC thermistor establishes ties on the live wire, places in between pilot lamp and the live wire jack. The utility model discloses simple structure, the cost of labor of plant maintenance is low, simple to operate.
Description
Technical field
The utility model relates to a kind of supply socket; particularly relate to the supply socket of a kind of power frequency overcurrent protection, the user being applicable to communication network registers one's residence the equipment end power frequency overcurrent protection of end equipment, safe city video monitoring site, automation control appliance and other electronic electric equipment.
Background technology
PTC thermistor is often called resettable fuse by people again, has unique positive temperature coefficient resistor characteristic.The using method of PTC thermistor, as general insurance silk, is connect to use in circuit, when circuit normally works, and thermistor temp and room temperature or ambient temperature is close, resistance is very little, series connection can not hinder electric current to pass through in circuit; And when there is overcurrent when circuit because fault or equipment short circuit, thermistor causes temperature to rise due to heating power increase, and when temperature exceedes mains switch temperature, resistance can increase severely instantaneously, can sharply increase several to tens orders of magnitude, the current limit in circuit to very low level.Voltage now in circuit is nearly all added in thermistor two ends, thus can play the effect of other element of protection.After fault automatically disappears or gets rid of, the resistance of thermistor generally can return to rapidly original level in tens seconds to tens seconds, now the maintenance electric current of thermistor returns to below rated value, and thermistor can continue without the need to replacing to use.
The user of communication network registers one's residence end equipment, safe city video monitoring site, automation control appliance and other electronic electric equipment owing to often causing damage and accelerated ageing because electric power system user receiving end voltage qualification rate is lower; particularly a lot of plant capacity only has tens of watts, 100 watts, and the air switch of the overcurrent protection configured in equipment when there is supply line's fault, equipment short trouble substantially can not disconnect in time or not disconnect.If by bearing power parameter configuration air switch, there is line fault, equipment short trouble, large-area equipment Frequent trip will be made during thunderbolt, safeguard very inconvenient (this Ye Shi device fabrication producer not in equipment design insurance pipe carry out the major reason of overcurrent protection, because, in equipment, design insurance pipe carries out overcurrent protection, once there is the protective tube fusing in large area equipment, operator will think that equipment exists quality problems and complains, affect the sale of its product, so the air switch of the overcurrent protection of configuration is generally 25A in equipment, 16A's.Not only make the maintenance cost of equipment and network system very high, also give the production of people, living brings great inconvenience.
Utility model content
The purpose of this utility model is the weak point overcome in prior art, the power frequency overcurrent protection supply socket providing a kind of cost of labor of plant maintenance low, easy for installation.
For achieving the above object; the technical scheme that the utility model provides is: the supply socket of a kind of power frequency overcurrent protection; comprise earth jack, zero line jack, firewire jack, mains switch, indicator light, PTC thermistor and current-limiting resistance; before described mains switch is placed in firewire jack; described current-limiting resistance and indicator light series connection be placed on mains switch after live wire and zero line between; described PTC thermistor is connected on live wire, is placed between indicator light and firewire jack.
A technical scheme tool in technique scheme has the following advantages or beneficial effect: all do not have fuse in present electronic equipment, the utility model solves the power frequency overcurrent protection difficult problem in supply line, adopt female type design simultaneously, only need to replace original conventional electrical socket, install very convenient, simply; The utility model supply socket has auto restore facility, greatly reduces the cost of labor of plant maintenance; Power frequency overcurrent protection supply socket configuration multidigit consent, the difformity plug that can meet multiple devices patches simultaneously, both can insert 2 core plugs, also can insert 3 core plugs; Equipment failure rate reduces, and decrease client's the rate of complaints to common carrier, the service quality of common carrier is improved significantly.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, simple introduction is done below by the accompanying drawing used required in embodiment or description of the prior art, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the utility model structure principle chart;
Fig. 2 is the utility model structural representation;
In figure: 1, earth jack; 2, zero line jack; 3, firewire jack; 4, mains switch; 5, indicator light; 6, PTC thermistor; 7, current-limiting resistance.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described.
As shown in Figure 1 and Figure 2; a kind of power frequency overcurrent protection of the present utility model supply socket; comprise earth jack 1, zero line jack 2, firewire jack 3, mains switch 4, indicator light 5, PTC thermistor 6 and current-limiting resistance 7; before mains switch 4 is placed in firewire jack 3; current-limiting resistance 7 and indicator light 5 connect be placed on after mains switch 4 between live wire and zero line; PTC thermistor 6 is connected on live wire, is placed between indicator light 5 and firewire jack 3.
As shown in Figure 1, L
1: live wire lead-out wire, connects air switch; N
1: zero line lead-out wire, connects air switch; PE
1: ground wire lead-out wire, earthing bar; L
2: weld with firewire jack in socket 3; N
2: weld with zero line jack in socket 2; PE
2: weld with ground wire jack in socket 1; PTC thermistor 6: be connected on live wire; Indicator light 5: for supply socket provides on/off to indicate; Current-limiting resistance 7: control indicator light electric current; Mains switch 4: the break-make controlling electricity outlet power.
Apply specific embodiment herein to set forth principle of the present utility model and execution mode, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.The above is only preferred implementation of the present utility model, should be understood that, due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the prerequisite not departing from the utility model principle, some improvement, retouching or change can also be made, also above-mentioned technical characteristic can be combined by rights; These improve retouching, change or combination, or the design of utility model and technical scheme are directly applied to other occasion without improving, and all should be considered as protection range of the present utility model.
Claims (1)
1. power frequency overcurrent protection supply socket; comprise earth jack, zero line jack, firewire jack, mains switch and indicator light; it is characterized in that: also comprise PTC thermistor and current-limiting resistance; before described mains switch is placed in firewire jack; described current-limiting resistance and indicator light series connection be placed on mains switch after live wire and zero line between; described PTC thermistor is connected on live wire, is placed between indicator light and firewire jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520358006.6U CN204760671U (en) | 2015-05-29 | 2015-05-29 | Power frequency over -current protection supply socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520358006.6U CN204760671U (en) | 2015-05-29 | 2015-05-29 | Power frequency over -current protection supply socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204760671U true CN204760671U (en) | 2015-11-11 |
Family
ID=54475349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520358006.6U Expired - Fee Related CN204760671U (en) | 2015-05-29 | 2015-05-29 | Power frequency over -current protection supply socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204760671U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374265A (en) * | 2016-10-17 | 2017-02-01 | 成都尚智恒达科技有限公司 | Combustion-prevention patch board capable of being automatically powered off against overload and having timing function |
| CN107437790A (en) * | 2016-05-26 | 2017-12-05 | 郑浩生 | Family expenses overcurrent protection socket |
| US11237067B2 (en) * | 2019-08-20 | 2022-02-01 | Kidde Technologies, Inc. | Uncertainty diagnosis for temperature detection systems |
-
2015
- 2015-05-29 CN CN201520358006.6U patent/CN204760671U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107437790A (en) * | 2016-05-26 | 2017-12-05 | 郑浩生 | Family expenses overcurrent protection socket |
| CN106374265A (en) * | 2016-10-17 | 2017-02-01 | 成都尚智恒达科技有限公司 | Combustion-prevention patch board capable of being automatically powered off against overload and having timing function |
| US11237067B2 (en) * | 2019-08-20 | 2022-02-01 | Kidde Technologies, Inc. | Uncertainty diagnosis for temperature detection systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20180529 |