CN201199583Y - All-purpose safety plug capable of preventing earth wire contact from non-conducting - Google Patents
All-purpose safety plug capable of preventing earth wire contact from non-conducting Download PDFInfo
- Publication number
- CN201199583Y CN201199583Y CNU2007201138762U CN200720113876U CN201199583Y CN 201199583 Y CN201199583 Y CN 201199583Y CN U2007201138762 U CNU2007201138762 U CN U2007201138762U CN 200720113876 U CN200720113876 U CN 200720113876U CN 201199583 Y CN201199583 Y CN 201199583Y
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- ground wire
- resistance
- photoelectric coupling
- neon lamp
- transformer
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Abstract
The utility model relates to an all-purpose safety plug which can prevent the contact of an earth wire from not being conducted. The all-purpose safety plug comprises a connecting wire for connecting an earth wire, a null line and a live wire which are provide with switches and a creepage protector consisting of a zero sequence transformer, a trip, an amplifier, a rectifier, a test loop and a silicon-controlled rectifier. After being connected with a resistor in series, the primary input end of a transformer is connected with the output end of the live wire and the output end of the null line in parallel, the secondary output end is connected with the two ends of the earth wire switch in parallel after being connected with another resistor in series, one end of a neon lamp in a photoelectric coupler is connected with the input end of the earth wire E and a secondary end of the transformer, the other end of the neon lamp is connected with the centers of the two resistors, one end of a light sensitive resistor in a photoelectric coupling switch is connected with the anode of an integrated circuit power in the creepage protector, the other end of the light sensitive resistor is connected with the anode of a diode, the cathode of the diode is connected with the triggering pole of the silicon-controlled rectifier in the creepage protector, the neon lamp and the light sensitive resistor are positioned into a dark box, and a small hole which avoids the light sensitive resistor is formed on the dark box. The all-purpose safety plug has the advantages that when the contact of the earth wire is not conducted, the live wire and the null line can not be connected so as to cut the power supply, therefore, the use safety is guaranteed.
Description
Technical field
The utility model relates to a kind of attaching plug, particularly a kind of not omnipotence safety plug of conducting of ground wire contact that prevents.
Background technology
Omnipotence safety plug, generally comprise belt switch phase, zero, three utmost points, be located at zero sequence current mutual inductor, test loop, amplifying circuit, rectifier, controllable silicon, release between phase, the zero line, ground wire is connected with fixed contact by the movable contact flexure strip, be installed with zero sequence current mutual inductor in the ground wire, it has or not the residual current except detecting between load phase, the zero line, and whether also detect ground wire charged.When phase line, zero line or ground wire broke down respectively or simultaneously, two magnetic test coils all can make release immediately phase, zero, ground wire all be disconnected, and promptly cut off the electricity supply, thereby have ensured personal safety effectively, therefore are used widely in household electrical appliance.
Existing omnipotence safety plug is if the contact of ground wiretap is malfunctioning, if power supply this moment, then because of the ground wire contact can not be communicated with, electrical equipment can not normally connect ground wire and cause potential safety hazard.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the above-mentioned defective of prior art and a kind of omnipotence safety plug is provided, and makes it can cut off power supply under the malfunctioning situation in ground wire contact, thereby eliminates the hidden danger of electric shock accidents, ensures safe in utilization.
The utility model solves the problems of the technologies described above the technical scheme that is adopted:
A kind of not omnipotence safety plug of conducting of ground wire contact that prevents; the ground that comprises each belt switch; zero; mutually three-way wiring and by zero-sequence transformer; release; amplifier; rectifier; the earth leakage protective device that test loop and controllable silicon are formed; it is characterized in that: be attempted by live wire output and zero line output after its primary input series resistance; the transformer secondary output output be connected in parallel on the ground wire switch ends after resistance is connected; an end of T level of an end of neon lamp and ground wire E input and transformer is connected in the optocoupler; the neon lamp other end is connected with the center of two resistance; photo resistance two ends are by the diode triggered earth leakage protective device in the photoelectric coupling switch; described neon lamp and photo resistance place camera bellows, open an aperture of avoiding photo resistance on the camera bellows.
Above-mentioned photo resistance also can be other light-sensitive elements, as photodiode or phototriode.
The above-mentioned not omnipotence safety plug of conducting of ground wire contact that prevents, also have the ground wire electrification warning device, its ground wire electrification warning device is: connect a sound and/or flash alarm circuit and photoelectric coupling switch between the input pin end of described ground, phase two wires, sound and/or flash alarm circuit are connected with the light-sensitive element of photoelectric coupling switch, a resistance be connected after the neon lamp of photoelectric coupling switch is connected between described zero line input pin end and ground wire output plug end.
Compared with prior art, advantage of the present utility model is:
1. by leakage switch and photoelectric coupling switch switch are set, make the all-round switch of safety in the ground wire contact not during conducting, phase, zero line can not close conducting and cut off power supply, thereby eliminate the hidden danger of electric shock accidents, ensure safe in utilization.
2. also by the ground wire electrification warning device is set in omnipotence safety plug, strong caution user ground wire is charged when ground wire electrification is cut off the electricity supply, the user is concentrated on this potential safety hazard of ground wire electrification also can in time get rid of, thereby eliminate personal safety hidden danger.
Description of drawings
Fig. 1 is the circuit diagram of omnipotence safety plug of the band ground wire electrification warning device of the utility model embodiment.
Fig. 2 is the structural representation of another embodiment of the utility model.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment 1:
As shown in Figure 1, the circuit that amplifier IC, controllable silicon SCR, diode D1, diode D2, resistance R 8, release ZR, zero-sequence transformer LLH constitute among Fig. 1 is for earth leakage protective device circuit commonly used, and is very common, launches no longer in detail to discuss at this.
Prevent the ground wire contact not the omnipotence safety plug of conducting comprised above-mentioned earth leakage protective device; in existing triple line plug; be attempted by live wire L output and zero line N output behind its transformer T primary input terminal series resistance R1; transformer T secondary output end and resistance R 9; be connected in parallel on the ground wire switch ends after the R5 series connection; an end of T level of an end of neon lamp and ground wire E input and transformer is connected in the optocoupler; the neon lamp other end and resistance R 9; the center of R5 connects; one end of the interior photo resistance of photoelectric coupling switch GR2 is connected with the integrated circuit (IC) positive source DC+ in the earth leakage protective device; the other end of photo resistance is connected with the positive pole of diode D3, and the controllable silicon SCR trigger electrode in the negative pole of diode D3 and the earth leakage protective device is connected.
The operation principle of above-mentioned omnipotence safety plug: switch on when earth leakage protective device closes a floodgate; transformer T is elementary to switch on after the step-down of R1 current limliting; one of transformer secondary output output is higher than neon lamp and lights required voltage; during the ground wire switch conduction; secondary voltage is through resistance R 9; R5 ground wiretap forms a loop; R9; the dividing potential drop of R5 makes the voltage at neon lamp two ends be lower than the voltage that neon lamp need be lighted; local not conducting of wiretap; R9; R5 just can not produce dividing potential drop; the transformer output voltage just directly is added to the neon lamp two ends through R9; neon lamp is lighted; thereby the photo resistance resistance in the optocoupler is diminished, and the earth leakage protective device tripping operation all disconnects live wire and zero line; can not normal power supply, prevent the generation of electric shock accidents.
As the ground wire switch conduction, then the voltage difference of switch ends is zero, and the neon lamp that is connected in parallel on switch ends can not be lighted, then earth leakage protective device akinesia, and live wire and zero line be all conductings also, and omnipotence safety plug all can operate as normal.
Above-mentioned omnipotence safety plug also has the ground wire electrification warning device, its ground wire electrification warning device is: described ground wire N, connect flash alarm circuit and photoelectric coupling switch between the input pin end of phase line L two wires, flash alarm circuit is by rectifier diode D4, step-down current-limiting resistance R3, filter capacitor C and flash tube LED form, flash tube LED with after filter capacitor C is in parallel with rectifier diode D4, step-down current-limiting resistance R3 series connection, resistance one end among the described photoelectric coupling switch GR1 is connected with flash tube LED, the other end is connected with ground wire input pin end, neon lamp one end among the described photoelectric coupling switch GR1 be connected between the input pin end of described ground wire input E and phase line N after resistance R 2 is connected.
Go back parallel resistance R4 between the input pin end of described ground wire input E and phase line N.
When local tape is electric,, thereby remind user's ground wire electrification, in time fix a breakdown by photoelectric coupling switch GR1 trigger flashing pipe LED flash of light.
Photoelectric coupling switch is made up of camera bellows, neon lamp and photo resistance, and neon lamp and photo resistance place camera bellows, opens the aperture that a photo resistance is avoided on the camera bellows.
Above-mentioned photo resistance also can be other light-sensitive elements, as photodiode or phototriode.
Above-mentioned photoelectric coupling switch GR1 is used for ground wire electrification and reports to the police, and photoelectric coupling switch GR2 is used for the whether conducting of check ground wiretap.
Embodiment 2:
Schematic diagram is seen Fig. 2, and the earth leakage protective device circuit is with embodiment 1.
In existing triple line plug; be attempted by live wire L output and zero line N output behind its transformer T primary input terminal series resistance R1; transformer T secondary output end and resistance R 9; be connected in parallel on the ground wire switch ends after the R5 series connection; an end of T level of an end of neon lamp and ground wire E input and transformer is connected in the optocoupler; the neon lamp other end and resistance R 9; the center of R5 connects; the interior integrated circuit (IC) positive source DC+ of the collector electrode of an end of two photo resistance and triode Q1 and earth leakage protective device is connected in the optocoupler GR; the other end of photo resistance is connected with the base stage of triode Q1 and an end of resistance R 6; the other end of resistance R 6 is connected with amplifier IC power cathode DC-in the protector; triode Q1 emitter; resistance R 7; the positive pole of capacitor C 2; the positive pole of diode D3 connects; resistance R 7; amplifier IC power cathode DC-in the other end of capacitor C 2 and the earth leakage protective device is connected, and the interior controllable silicon SCR trigger electrode of the negative pole of diode D3 and earth leakage protective device is connected.
From foregoing circuit figure as can be seen; its difference with embodiment 1 is that the photoelectric coupling switch circuits for triggering are different; directly trigger earth leakage protective device with photoelectric coupling switch among the embodiment 1; present embodiment has increased transistor switching circuit behind photoelectric coupling switch, trigger earth leakage protective device by photoelectric coupling switch GR2 and triode switch.
The operation principle of above-mentioned omnipotence safety plug is as follows: neon lamp is lighted in photoelectric coupling switch GR2; resistance value diminished after light was seen in photo resistance in the photoelectric coupling switch GR2; power supply DC+ makes triode Q1 base stage obtain conducting voltage through photo resistance; triode Q1 conducting; the conducting electric current produces voltage drop on resistance R, this voltage to the controllable silicon SCR trigger electrode, makes the controllable silicon SCR triggering and conducting through diode D3; leakage protecting plug tripping operation outage, thus can not normally close a floodgate.
As the ground wire switch conduction, then the voltage difference of switch ends is zero, and the neon lamp that is connected in parallel on switch ends can not be lighted, then earth leakage protective device akinesia, and live wire and zero line be all conductings also, and omnipotence safety plug all can operate as normal.
Above-mentioned omnipotence safety plug also has the ground wire electrification warning device, and itself and embodiment 1 are identical.
Claims (8)
1. prevent the not omnipotence safety plug of conducting of ground wire contact; the ground that comprises each belt switch; zero; mutually three-way wiring and by zero-sequence transformer; release; amplifier; rectifier; the earth leakage protective device that test loop and controllable silicon are formed; it is characterized in that: be attempted by live wire (L) output and zero line (N) output after its transformer (T) primary input terminal series resistance (R1); transformer (T) secondary output end and resistance (R9; R5) be connected in parallel on the ground wire switch ends after the series connection; the secondary end of an end of neon lamp and ground wire (E) input and transformer (T) is connected in the optocoupler; the neon lamp other end and resistance (R9; R5) center connects; integrated circuit (IC) positive source (DC+) in one end of the interior photo resistance of photoelectric coupling switch (GR2) and the earth leakage protective device is connected; the other end of photo resistance is connected with the positive pole of diode (D3); controllable silicon (SCR) trigger electrode in the negative pole of diode (D3) and the earth leakage protective device is connected; neon lamp and photo resistance place camera bellows, open an aperture of avoiding photo resistance on the camera bellows.
2. the not omnipotence safety plug of conducting of ground wire contact that prevents as claimed in claim 1, it is characterized in that: also have the ground wire electrification warning device, its ground wire electrification warning device is: connect a sound and/or flash alarm circuit and photoelectric coupling switch between the input pin end of described ground, phase two wires, sound and/or flash alarm circuit are connected with the light-sensitive element of photoelectric coupling switch, a resistance be connected after the neon lamp of photoelectric coupling switch is connected between described zero line input pin end and ground wire output plug end.
3. the not omnipotence safety plug of conducting of ground wire contact that prevents as claimed in claim 2, it is characterized in that: described ground wire (N), connect flash alarm circuit and photoelectric coupling switch between the input pin end of phase line (L) two wires, flash alarm circuit is by rectifier diode (D4), step-down current-limiting resistance (R3), filter capacitor (C) and flash tube (LED) are formed, flash tube (LED) back in parallel and rectifier diode (D4) with filter capacitor (C), step-down current-limiting resistance (R3) series connection, resistance one end in the described photoelectric coupling switch (GR1) is connected with flash tube (LED), the other end is connected with ground wire input pin end, neon lamp one end in the described photoelectric coupling switch (GR1) be connected between the input pin end of described ground wire input (E) and phase line (N) after resistance (R2) is connected.
4. as claim 2 or the 3 described not omnipotence safety plugs of conducting of ground wire contact that prevent, it is characterized in that: go back parallel resistance (R4) between the input pin end of described ground wire input (E) and phase line (N).
5. one kind prevents the not omnipotence safety plug of conducting of ground wire contact; the ground that comprises each belt switch; zero; mutually three-way wiring and by zero-sequence transformer; release; amplifier; rectifier; the earth leakage protective device that test loop and controllable silicon are formed; it is characterized in that: be attempted by live wire (L) output and zero line (N) output after its transformer (T) primary input terminal series resistance (R1); transformer (T) secondary output end and resistance (R9; R5) be connected in parallel on the ground wire switch ends after the series connection; the secondary end of an end of neon lamp and ground wire E input and transformer (T) is connected in the optocoupler; the neon lamp other end and resistance (R9; R5) center connects; integrated circuit (IC) positive source (DC+) in one end of interior two photo resistance of optocoupler (GR) and the collector electrode of triode (Q1) and the earth leakage protective device is connected; the other end of photo resistance is connected with the base stage of triode (Q1) and an end of resistance (R6); the other end of resistance (R6) is connected with amplifier (IC) power cathode (DC-) in the protector; triode (Q1) emitter; resistance (R7); the positive pole of electric capacity (C2); the positive pole of diode (D3) connects; resistance (R7); amplifier (IC) power cathode (DC-) in the other end of electric capacity (C2) and the earth leakage protective device is connected; controllable silicon (SCR) trigger electrode in the negative pole of diode (D3) and the earth leakage protective device is connected; neon lamp and photo resistance place camera bellows, open an aperture of avoiding photo resistance on the camera bellows.
6. the not omnipotence safety plug of conducting of ground wire contact that prevents as claimed in claim 5, it is characterized in that: also have the ground wire electrification warning device, its ground wire electrification warning device is: connect a sound and/or flash alarm circuit and photoelectric coupling switch between the input pin end of described ground, phase two wires, sound and/or flash alarm circuit are connected with the light-sensitive element of photoelectric coupling switch, a resistance be connected after the neon lamp of photoelectric coupling switch is connected between described zero line input pin end and ground wire output plug end.
7. the not omnipotence safety plug of conducting of ground wire contact that prevents as claimed in claim 6, it is characterized in that: described ground wire (N), connect flash alarm circuit and photoelectric coupling switch between the input pin end of phase line (L) two wires, flash alarm circuit is by rectifier diode (D4), step-down current-limiting resistance (R3), filter capacitor (C) and flash tube (LED) are formed, flash tube (LED) back in parallel and rectifier diode (D4) with filter capacitor (C), step-down current-limiting resistance (R3) series connection, resistance one end in the described photoelectric coupling switch (GR1) is connected with flash tube (LED), the other end is connected with ground wire input pin end, neon lamp one end in the described photoelectric coupling switch (GR1) be connected between the input pin end of described ground wire input (E) and phase line (N) after resistance (R2) is connected.
8. as claim 6 or the 7 described not omnipotence safety plugs of conducting of ground wire contact that prevent, it is characterized in that: go back parallel resistance (R4) between the input pin end of described ground wire input (E) and phase line (N).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201138762U CN201199583Y (en) | 2007-08-29 | 2007-08-29 | All-purpose safety plug capable of preventing earth wire contact from non-conducting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201138762U CN201199583Y (en) | 2007-08-29 | 2007-08-29 | All-purpose safety plug capable of preventing earth wire contact from non-conducting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201199583Y true CN201199583Y (en) | 2009-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201138762U Expired - Fee Related CN201199583Y (en) | 2007-08-29 | 2007-08-29 | All-purpose safety plug capable of preventing earth wire contact from non-conducting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201199583Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403692A (en) * | 2011-12-19 | 2012-04-04 | 钱加灿 | Current leakage protector |
| CN102637982A (en) * | 2012-01-12 | 2012-08-15 | 钱加灿 | Plug with earth wire charged protection mechanism |
| WO2013013415A1 (en) * | 2011-07-28 | 2013-01-31 | 深圳市良辉科技有限公司 | Ground wire safe voltage control system |
| CN104767173A (en) * | 2015-03-20 | 2015-07-08 | 余姚市嘉荣电子电器有限公司 | IC-free optical-coupler detection ground wire voltage abnormity electricity leakage protection device |
| CN106950453A (en) * | 2017-05-05 | 2017-07-14 | 南京信息工程大学 | A kind of grounding safety Protective Detector |
| CN109818332A (en) * | 2019-02-19 | 2019-05-28 | 余姚市嘉荣电子电器有限公司 | A kind of earth leakage protective device having ground wire missing protection |
| CN111812554A (en) * | 2020-07-24 | 2020-10-23 | 上海星融汽车科技有限公司 | On-board diagnostic (OBD) interface plug-pull state detection device based on photoresistor and detection method thereof |
-
2007
- 2007-08-29 CN CNU2007201138762U patent/CN201199583Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013013415A1 (en) * | 2011-07-28 | 2013-01-31 | 深圳市良辉科技有限公司 | Ground wire safe voltage control system |
| CN102403692A (en) * | 2011-12-19 | 2012-04-04 | 钱加灿 | Current leakage protector |
| CN102637982A (en) * | 2012-01-12 | 2012-08-15 | 钱加灿 | Plug with earth wire charged protection mechanism |
| CN104767173A (en) * | 2015-03-20 | 2015-07-08 | 余姚市嘉荣电子电器有限公司 | IC-free optical-coupler detection ground wire voltage abnormity electricity leakage protection device |
| CN104767173B (en) * | 2015-03-20 | 2017-12-08 | 余姚市嘉荣电子电器有限公司 | Ground wire voltage exception earth leakage protective device is detected without IC optocouplers |
| CN106950453A (en) * | 2017-05-05 | 2017-07-14 | 南京信息工程大学 | A kind of grounding safety Protective Detector |
| CN106950453B (en) * | 2017-05-05 | 2023-09-12 | 南京信息工程大学 | Grounding safety protection detector |
| CN109818332A (en) * | 2019-02-19 | 2019-05-28 | 余姚市嘉荣电子电器有限公司 | A kind of earth leakage protective device having ground wire missing protection |
| CN109818332B (en) * | 2019-02-19 | 2024-04-30 | 余姚市嘉荣电子电器有限公司 | Leakage protector with ground wire missing protection |
| CN111812554A (en) * | 2020-07-24 | 2020-10-23 | 上海星融汽车科技有限公司 | On-board diagnostic (OBD) interface plug-pull state detection device based on photoresistor and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Yuyao Jiarong Electronic Appliance Co., Ltd. Assignor: Qian Jiacan Contract fulfillment period: 2009.4.20 to 2017.8.28 Contract record no.: 2009330001041 Denomination of utility model: All-purpose safety plug capable of preventing earth wire contact from non conducting Granted publication date: 20090225 License type: Exclusive license Record date: 20090518 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.4.20 TO 2017.8.28; CHANGE OF CONTRACT Name of requester: YUYAO JIARONG ELECTRONIC APPLIANCE CO., LTD. Effective date: 20090518 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20150829 |
|
| EXPY | Termination of patent right or utility model |