CN201838835U - Grounding wire indicating safety plug - Google Patents
Grounding wire indicating safety plug Download PDFInfo
- Publication number
- CN201838835U CN201838835U CN201020522844XU CN201020522844U CN201838835U CN 201838835 U CN201838835 U CN 201838835U CN 201020522844X U CN201020522844X U CN 201020522844XU CN 201020522844 U CN201020522844 U CN 201020522844U CN 201838835 U CN201838835 U CN 201838835U
- Authority
- CN
- China
- Prior art keywords
- pin
- safety plug
- indicator light
- grounding wire
- resistance
- 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 - Fee Related
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Abstract
The utility model discloses a grounding wire indicating safety plug, aiming at solving the problem that naked eyes can not judge whether a ground wire is complete in the existing three-leg plug. The grounding wire indicating safety plug comprises a grounding wire pin, a zero-wire pin and a live-wire pin, wherein the grounding wire pin and the zero-wire pin are connected by a lead which is connected with a resistor II and a conducting indicating lamp a in series; and the live-wire pin and the grounding wire pin are connected by another lead which is connected with a resistor I and a conducting indicating lamp b in series. Due to adoption of the grounding wire indicating safety plug, the structure is simple, practical and convenient, the connecting condition of the grounding wire can be effectively displayed, and the potential safety hazards can be eliminated.
Description
Technical field
The utility model relates to three and inserts plug, is specifically related to a kind of ground wire indication safety plug that can indicate ground wire whether to connect.
Background technology
Known present plug mainly is two pin and tripod, wherein three-pin plug is mainly used in high-power and has the electrical equipment of metal shell, utilize three-pin plug to cooperate three hole plugs to prevent people's Danger Electric shock risk because of causing accidentally when making electrical appliance, but the ground wire in the three hole plugs fractures or connect and just lost original meaning, in time do not find and just handle and cause danger easily, therefore present three-pin plug still has in use needs improved place.
The utility model content
The purpose of this utility model is to provide a kind of aspect simple in structure, practical, whether intact ground wire is indicated safety plug to allow people can clearly differentiate ground wire when using high-power electric appliance.
In order to reach above-mentioned purpose of design, the technical solution adopted in the utility model is as follows:
A kind of ground wire indication safety plug comprises: earth pin, zero line pin and live wire pin, and wherein the live wire pin links to each other with earth pin by a lead; Described earth pin is connected by another lead with zero line pin, is in series with resistance two and conduction indicator light a on described another lead lead.
Further, be in series with resistance one and conduction indicator light b on the lead of described connection live wire pin and earth pin.
Further, the resistance of resistance one and resistance two is 22K Ω.
Further, described indicator light a and indicator light b are the LED lamp.
Further, the light color of described indicator light a is different with the light color of indicator light b.
The beneficial effect of ground wire indication safety plug described in the utility model is: be provided with one in zero line pin and earth pin and be connected lead, and lead is provided with resistance two and conduction indicator light a, can under the situation of ground wire path or short circuit, provide indication so that people are judged identification, thereby avoid the generation of peril.
Description of drawings
Fig. 1 is the electrical block diagram of this practical ground wire indication safety plug.
Embodiment
Below in conjunction with Figure of description embodiment of the present utility model is done detailed description.Obviously, described embodiment only is a part of embodiment of the present utility model, and other embodiment that those skilled in the art is obtained under the prerequisite of not paying creative work belongs to protection range of the present utility model.
Ground wire indication safety plug as shown in Figure 1 comprises: earth pin, zero line pin, live wire pin, resistance one, resistance two, conduction indicator light a and conduction indicator light b, wherein the live wire pin links to each other with earth pin by a lead, described earth pin is connected another lead with zero line pin, be in series with resistance two and conduction indicator light a on described another lead, be in series with resistance one and conduction indicator light b on described live wire pin and the lead that earth pin is connected, the resistance of aforementioned resistance one and resistance two is 22K Ω; Described indicator light a and indicator light b are that the light color of LED lamp and two lamps is different.
During use, plug insertion socket, when ground wire is good, the conduction indicator light a of live wire pin and earth pin upper conductor lights, electric current is directly derived by ground wire, the indicator light b that conducts electricity this moment closes for long, when ground wire fractures or be connection, two leads on live wire pin, earth pin, the zero line pin form series connection, the conduction indicator light b that be positioned on the lead of zero line pin and earth pin this moment lights, form the situation that conduction indicator light a, conduction indicator light b light simultaneously, can judge that thus the ground wire connection goes wrong.
More than; it only is preferred embodiment of the present utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, all should be encompassed in protection range of the present utility model in.Therefore, protection range of the present utility model should be as the criterion with the protection range that claim was defined.
Claims (5)
1. a ground wire is indicated safety plug, comprising: earth pin, zero line pin and live wire pin, and wherein the live wire pin links to each other with earth pin by a lead; It is characterized in that: described earth pin is connected by another lead with zero line pin, is in series with resistance two and conduction indicator light a on described another lead.
2. ground wire indication safety plug according to claim 1 is characterized in that: be in series with resistance one and conduction indicator light b on the lead of described connection live wire pin and earth pin.
3. ground wire indication safety plug according to claim 1 and 2, it is characterized in that: the resistance of resistance one and resistance two is 22K Ω.
4. ground wire indication safety plug according to claim 3, it is characterized in that: described indicator light a and indicator light b are the LED lamp.
5. ground wire indication safety plug according to claim 4, it is characterized in that: the light color of described indicator light a is different with the light color of indicator light b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020522844XU CN201838835U (en) | 2010-09-09 | 2010-09-09 | Grounding wire indicating safety plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020522844XU CN201838835U (en) | 2010-09-09 | 2010-09-09 | Grounding wire indicating safety plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201838835U true CN201838835U (en) | 2011-05-18 |
Family
ID=44008936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020522844XU Expired - Fee Related CN201838835U (en) | 2010-09-09 | 2010-09-09 | Grounding wire indicating safety plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201838835U (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 |
-
2010
- 2010-09-09 CN CN201020522844XU patent/CN201838835U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20120909 |