CN202259985U - Plug with power-off protection function - Google Patents
Plug with power-off protection function Download PDFInfo
- Publication number
- CN202259985U CN202259985U CN2011203639517U CN201120363951U CN202259985U CN 202259985 U CN202259985 U CN 202259985U CN 2011203639517 U CN2011203639517 U CN 2011203639517U CN 201120363951 U CN201120363951 U CN 201120363951U CN 202259985 U CN202259985 U CN 202259985U
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- live wire
- plug
- lead
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Abstract
The utility model relates to a plug with a power-off protection function, including a plug body. The plug body is provided with a live wire pin and a zero line pin; the plug body is connected with an external connection lead; and a live wire lead and a zero line lead are provided in the external connection lead. The plug with a power-off protection function is characterized in that a power-off protection circuit is provided in the plug body, and with the power-off protection circuit, the live wire pin can be kept being connected with the live wire lead when power is on, and the live wire pin is kept being broken off from the live wire lead after power is off. Compared to the prior technology, in the utility model, the plug with a power-off protection function is advantageous in that the power-off protection circuit is implanted in the plug body, the live wire pin is kept being broken off from the live wire lead after power is off, the broken-off state is kept when power is on again, only when a user is sure to turn on the power, the circuit can be turned on by hand operation, the usage life of an electric appliance is prolonged, and simultaneously, according to the requirement of a user, the on/off of the circuit can be freely switched by a touch of a button to a switch, and the hidden trouble can be effectively eliminated caused by an electric appliance which is unclosed when power is off.
Description
Technical field
The utility model relates to a kind of plug with power-off protection function.
Background technology
Improving constantly of Along with people's living standard; Various household electrical appliances get into huge numbers of families; Add industrial develop rapidly, electric power is not supplied far away, and the power failure thing often takes place; The thing followed is to happen occasionally owing to security incident that the improper use of household electrical appliances or household electrical appliance quality problems cause, thereby the research and development of Electrical Safety product such as safeguard protection plug have received generally and paying attention to.Three major types is arranged at present: a kind of is that plug in standard is implanted into a protective tube, and behind the electric current of protective tube, protective tube is because of heat fusing in operating current surpasses plug, and circuit breaks off, and when needs continue to use, must change protective tube.The shortcoming of this kind protection is: 1, it does not have the power-failure protecting function, and when sending a telegram here once more, circuit still is in on-state, is absent from the scene like the people, and electrical equipment does not cut out, and will produce power wastage, electrical equipment and damage, even serious accident such as breaking out of fire.2, general family does not have protective tube of the same type subsequent use, and is improper as if changing voluntarily, causes potential short circuit risk, concerning electrical equipment and life safety, all has potential safety hazard.3, when the user need not use, must plug be extracted could be with dump, and frequent plug has influenced the useful life of socket, causes loose contact, has also influenced the useful life of electrical equipment simultaneously.Another kind is that the plug in standard is implanted into a manual overload protective device or overload protective device automatically, though its design is progressive to some extent at the former, has changed the replacing and the useful life of protective device on one's body; But a lot of shortcomings is still arranged in the use, 1, it still is not with the power-failure protecting function, when sending a telegram here once more; Circuit still is in on-state, is absent from the scene like the people, and electrical equipment does not cut out; Will produce power wastage, electrical equipment and damage, even serious accident such as breaking out of fire.2, its belt switch function not, when the user need not use, must plug be extracted could be with dump, and frequent plug has influenced the useful life of socket, causes loose contact, has also influenced the useful life of electrical equipment simultaneously.The third is the overcurrent protection switch of on plug, packing into, though it all improves to some extent than the above two, on safety, still has big hidden danger; It is not with the power-failure protecting function, when particularly this kind plug is used to have on the electric equipment of certain risk, such as process equipments such as press bed, riveting machines; Process equipment quits work after having a power failure; Operating personnel do not cut off the electricity supply, and with hand the product on the equipment are taken out, and this moment is incoming call suddenly; Device start just may cause certain danger to the operator, has potential safety hazard.
The utility model content
The utility model technical problem to be solved is to above-mentioned prior art a kind of plug with power-off protection function to be provided.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this has the plug of power-off protection function; Comprise header body; Header body is provided with live wire pin and zero line pin; Header body connects external wire, is provided with live wire lead and zero line lead in the external wire, it is characterized in that: can keep the power-off protecting circuit that live wire pin and live wire lead are connected, the outage back keeps live wire pin and live wire lead to break off when being provided with energising in the said header body.
Said power-off protecting circuit comprises normally closed switch; Dropping resistor, electric capacity, full bridge rectifier; Relay; Wherein the live wire pin is connected the back through being connected to full bridge rectifier after the dropping resistor step-down with normally closed switch, and the output after the full bridge rectifier rectification is connected to two coil pin of relay; The two ends of electric capacity are connected the two ends of dropping resistor; The live wire pin also directly links to each other with the input pin of relay; The output pin of relay is connected with the live wire lead; And the output pin of relay feedback is connected on the lead between normally closed switch and the dropping resistor; Zero line pin links to each other with the zero line lead, and zero line pin also links to each other with full bridge rectifier simultaneously.
Said power-off protecting circuit also comprises a Live switch, and this Live switch is serially connected between normally closed switch and the dropping resistor, and the output pin of relay feedback is connected on the lead between normally closed switch and the Live switch.
Said header body is provided with first switch hole that is used to expose said Live switch.
Said header body is provided with the second switch hole that is used to expose said normally closed switch.
Said power-off protecting circuit also comprises a LED power supply indicator, and the two ends of this LED power supply indicator link to each other with the output pin of zero line pin and relay respectively.
Said power-off protecting circuit is integrated on the pcb board, and said header body is provided with the lamp hole that is used to expose said LED power supply indicator.
Said header body is provided with earth pin, is provided with the ground wire lead in the said external wire, and earth pin links to each other with the ground wire lead.
Compared with prior art; The advantage of the utility model is: through in header body, being implanted into a power-off protecting circuit; This power-off protecting circuit can keep live wire pin and live wire lead to break off when having a power failure, and when sending a telegram here once more, still keeps off-state, has only the user to confirm to want energized; Could circuit be connected through manual, prolong electrical equipment useful life; Can also decide according to user's demand simultaneously,, can effectively eliminate and not close the hidden danger that electrical equipment brings when having a power failure through the break-make of the free commutation circuit of button touch-switch.
Description of drawings
Fig. 1 is the perspective view of plug among the utility model embodiment;
Fig. 2 is the circuit theory diagrams of power-off protecting circuit among the utility model embodiment;
Fig. 3 is the three-dimensional exploded view of plug among the utility model embodiment;
Fig. 4 is the partial sectional view of plug among the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Like Fig. 1～plug with power-off protection function shown in Figure 5; Comprise header body 1; Header body 1 comprises outer casing 11 and loam cake 12; Plastic cement protective sleeve 13 is set in the outer casing 11, and header body 1 bottom is provided with live wire pin 2, zero line pin 3 and earth pin 4, and header body 1 connects external wire 5; Be provided with live wire lead 51, zero line lead 52, ground wire lead 53 in the external wire, can keep the power-off protecting circuit 6 that live wire pin 2 and live wire lead 51 are connected, the outage back keeps live wire pin 2 and live wire lead 51 to break off when being provided with energising in the header body 1.
Said power-off protecting circuit comprises normally closed switch 61; Live switch 62, dropping resistor 63, electric capacity 64, full bridge rectifier 65, relay 66; LED power supply indicator 67; Be connected with Live switch 62 after wherein live wire pin 2 is connected with normally closed switch 61, and then through being connected to full bridge rectifier 65 after dropping resistor 63 step-downs, the output after full bridge rectifier 65 rectifications is connected to two coil pin of relay 66; The two ends of electric capacity 64 are connected the two ends of dropping resistor 63; Live wire pin 2 also directly links to each other with the input pin of relay 66; The output pin of relay 66 is connected with live wire lead 51; And the output pin of relay 66 feedback is connected on the lead between normally closed switch 61 and the Live switch 62, and zero line pin 3 links to each other with zero line lead 52, and zero line pin 3 also links to each other with full bridge rectifier 65 simultaneously; Earth pin links to each other with the ground wire lead, and the two ends of LED power supply indicator 67 link to each other with the output pin of zero line pin and relay respectively.In the present embodiment, full bridge rectifier 65 adopts the custom circuit structure, promptly adopts the diode of four IN4007 to be formed by connecting.
And; Above-mentioned power-off protecting circuit is integrated on the pcb board 6, and the loam cake 12 of said header body is provided with the lamp hole 121 that is used to expose said LED power supply indicator, is used to expose first switch hole 122 of said Live switch and the second switch hole 123 that is used to expose said normally closed switch.
Because the output pin of relay 66 feedback is connected on the lead between normally closed switch 61 and the Live switch 62, after live wire pin 2, zero line pin 3 and earth pin 4 energisings, press normally closed switch; Guarantee in the situation of not cutting off the power supply or do not press under the situation of Live switch that relay keeps attracting state, thereby reaches the hand switch function; After accident power-off, because normally closed switch 61 is in off-state all the time, like energising once more; Circuit or off-state need the artificial circuit of connecting.Thereby realize the power-failure protecting function.Between live wire pin and thermoelectricity lead, insert a LEDs power supply indicator, under the situation of relay adhesive energising, the LED power supply indicator is lighted, expression power connection state.
Claims (8)
1. plug with power-off protection function; Comprise header body; Header body is provided with live wire pin and zero line pin; Header body connects external wire, is provided with live wire lead and zero line lead in the external wire, it is characterized in that: can keep the power-off protecting circuit that live wire pin and live wire lead are connected, the outage back keeps live wire pin and live wire lead to break off when being provided with energising in the said header body.
2. the plug with power-off protection function according to claim 1; It is characterized in that: said power-off protecting circuit comprises normally closed switch; Dropping resistor, electric capacity, full bridge rectifier; Relay, wherein the live wire pin is connected the back through being connected to full bridge rectifier after the dropping resistor step-down with normally closed switch, and the output after the full bridge rectifier rectification is connected to two coil pin of relay; The two ends of electric capacity are connected the two ends of dropping resistor; The live wire pin also directly links to each other with the input pin of relay; The output pin of relay is connected with the live wire lead; And the output pin of relay feedback is connected on the lead between normally closed switch and the dropping resistor; Zero line pin links to each other with the zero line lead, and zero line pin also links to each other with full bridge rectifier simultaneously.
3. the plug with power-off protection function according to claim 2; It is characterized in that: said power-off protecting circuit also comprises a Live switch; This Live switch is serially connected between normally closed switch and the dropping resistor, and the output pin of relay feedback is connected on the lead between normally closed switch and the Live switch.
4. the plug with power-off protection function according to claim 3 is characterized in that: said header body is provided with first switch hole that is used to expose said Live switch.
5. the plug with power-off protection function according to claim 2 is characterized in that: said header body is provided with the second switch hole that is used to expose said normally closed switch.
6. according to claim 2 or 3 or 4 or 5 described plugs with power-off protection function; It is characterized in that: said power-off protecting circuit also comprises a LED power supply indicator, and the two ends of this LED power supply indicator link to each other with the output pin of zero line pin and relay respectively.
7. the plug with power-off protection function according to claim 6 is characterized in that: said power-off protecting circuit is integrated on the pcb board, and said header body is provided with the lamp hole that is used to expose said LED power supply indicator.
8. the plug with power-off protection function according to claim 1 is characterized in that: said header body is provided with earth pin, is provided with the ground wire lead in the said external wire, and earth pin links to each other with the ground wire lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203639517U CN202259985U (en) | 2011-09-26 | 2011-09-26 | Plug with power-off protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203639517U CN202259985U (en) | 2011-09-26 | 2011-09-26 | Plug with power-off protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202259985U true CN202259985U (en) | 2012-05-30 |
Family
ID=46121174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203639517U Expired - Fee Related CN202259985U (en) | 2011-09-26 | 2011-09-26 | Plug with power-off protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202259985U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017066957A1 (en) * | 2015-10-22 | 2017-04-27 | 深圳市同盛绿色科技有限公司 | Power plug |
| CN106611920A (en) * | 2015-10-22 | 2017-05-03 | 深圳市同盛绿色科技有限公司 | A power supply plug |
-
2011
- 2011-09-26 CN CN2011203639517U patent/CN202259985U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017066957A1 (en) * | 2015-10-22 | 2017-04-27 | 深圳市同盛绿色科技有限公司 | Power plug |
| CN106611920A (en) * | 2015-10-22 | 2017-05-03 | 深圳市同盛绿色科技有限公司 | A power supply plug |
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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 | ||
| CP02 | Change in the address of a patent holder |
Address after: 315317 Cixi Universal Electronics Co., Ltd., No. three, Shiqiao 339, Qiaotou town, Cixi City, Zhejiang Patentee after: Yu Mengda Address before: 315317 Cixi Universal Electronics Co., Ltd., No. three, Shiqiao 339, Qiaotou town, Empress Dowager City, Zhejiang Patentee before: Yu Mengda |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20140926 |
|
| EXPY | Termination of patent right or utility model |