CN208820453U - A kind of input power cord line disconnection protector - Google Patents
A kind of input power cord line disconnection protector Download PDFInfo
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- CN208820453U CN208820453U CN201821451662.0U CN201821451662U CN208820453U CN 208820453 U CN208820453 U CN 208820453U CN 201821451662 U CN201821451662 U CN 201821451662U CN 208820453 U CN208820453 U CN 208820453U
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Abstract
The utility model discloses a kind of input power cord line disconnection protectors, live the on-off on two core power-line route by ON-OFF control circuit control；The voltage flowed through is depressured by source current by reduction voltage circuit；Source current after decompression becomes DC power supply using DC converting circuit, DC power supply after conversion is shown using display circuit, then connect main line by the control terminal of ON-OFF control circuit, main line obtains electric after connection so that the circuit of control terminal persistently it is electric；Voltage on the main line of voltage regulator circuit detection connection, when if main line is because of open circuit or voltage instability voltage regulator circuit is not able to maintain, end loop is controlled to disconnect, power supply line is no longer subsequent load supplying, it avoids generating arc fault at the broken string of two core power-line in time, to avoid household electrical appliance or the load of damage rear end from avoiding causing fire, unnecessary loss of property or casualties are avoided, the safety in utilization of household electrical appliance is improved.
Description
Technical field
The utility model relates to a kind of power supply line protectors, and in particular to a kind of input power cord line disconnection protector.
Background technique
With being widely used for household electrical appliance, the input power cords of household electrical appliance is because of the various originals such as bent, be squeezed
The conductor cord disconnection of the centre because caused by.It, just will continuous pull-up electric arc at the broken string of power supply line after household electrical appliance power on
Phenomena such as to generate high fever, insulating layer carbonization.This phenomenon gently then damages the household electrical appliance of rear end, the heavy then surrounding that may ignite
Inflammable articles, to cause fire.The fire that arc fault causes accounts for 60% or more in electrical fire, the production to people
Serious harm is generated with life.In view of this, needing one kind that can not improve the cost of too many production facility and preferably protect
The household electrical appliance for protecting people use safe safety equipment.
Utility model content
The technical problem to be solved by the utility model is to after household electrical appliance power on, at the broken string of power supply line just
Will continuous pull-up electric arc to generate high fever, insulating layer carbonization phenomena such as；This phenomenon gently then damages the household electrical appliance of rear end,
The heavy then inflammable articles for the surrounding that may ignite, thus the problem of causing fire, the utility model, which provides, to solve the above problems
A kind of input power cord line disconnection protector.
The utility model is achieved through the following technical solutions:
A kind of input power cord line disconnection protector, including two core power-line, ON-OFF control circuit, reduction voltage circuit, direct current turn
Change circuit, voltage regulator circuit, indicating circuit, wherein as main line, main line is route respectively on the two lines road of two core power-line
A and route B；The ON-OFF control circuit is connect with the route A, route B and indicating circuit；The ON-OFF control circuit
Termination power is inputted, one end of the output end connection line A of the ON-OFF control circuit, the other end of route A is as protector
Output end；The input terminal connection line A of the reduction voltage circuit, the input of the output end connection DC converting circuit of reduction voltage circuit
End, another input terminal link B of DC converting circuit；The voltage regulator circuit is connected to the defeated of route B and DC converting circuit
Between outlet；The output end of the DC converting circuit is also connected with the input terminal of indicating circuit, the output end connection of indicating circuit
The control terminal of ON-OFF control circuit.The on-off on two core power-line route is lived by ON-OFF control circuit control；Source current passes through
The voltage flowed through is depressured by reduction voltage circuit；AC power source after decompression becomes DC power supply by DC converting circuit, turns
DC power supply after changing is shown using display circuit, then connects main line by the control terminal of ON-OFF control circuit
Logical, main line obtains electric after connection so that the circuit of control terminal persistently it is electric, guarantee ON-OFF control circuit is in closed state；Surely
Voltage on the main line of volt circuit detection connection prevents voltage regulator circuit from protecting when if main line is because of open circuit or voltage instability
It holds, control end loop disconnects, and the indicator light of indicating circuit extinguishes, and ON-OFF control circuit disconnects, and power supply line is no longer subsequent negative
Power supply is carried, so that timely automated disconnection power supply when breaking of the conducting wire in two core power-line, subsequent to two core power-line to bear
It is loaded into capable protection, avoids generating arc fault at the broken string of two core power-line in time, to avoid the household electric of damage rear end
Device or load, or the inflammable articles for surrounding of igniting cause fire, so that it may avoid unnecessary loss of property or casualties, mention
The high safety in utilization of household electrical appliance.
Further, varistor Rv is also parallel between the power end of ON-OFF control circuit and route B.When power end electricity
It forcing down when varistor Rv threshold values, the electric current for flowing through it is minimum, it is equivalent to the valve shut, when voltage is more than UN,
Its resistance value becomes smaller, and the electric current for allowing for flowing through it in this way increases sharply and inhibits overpressure peak, can avoid to sensitive in other circuits
The damage of circuit devcie.
Further, ON-OFF control circuit includes key switch k and photo-coupler Q1, the input of the photo-coupler Q1
The power end as ON-OFF control circuit is held, the output end of photo-coupler Q1 is the output end of ON-OFF control circuit, photo-coupler
The output end of the wherein control terminal connection display circuit of Q1, another control terminal connection line B of photo-coupler Q1；The key
The both ends switch k are separately connected the input terminal and output end of photo-coupler Q1.
Further, reduction voltage circuit includes resistance R2, capacitor C1, resistance R3, and one end of the resistance R2 is connected to route A
On, the other end of resistance R2 connects one end of capacitor C1, and capacitor C1 is in parallel with resistance R3；The other end of capacitor C1 is as decompression electricity
The output end on road.
Further, DC converting circuit includes diode D2 and diode D3, the anode of the diode D2 and
The output end of the cathode connection reduction voltage circuit of diode D3, the cathode of diode D2 connect voltage regulator circuit, the voltage regulator circuit packet
The positive lead road B of zener diode D1 and capacitor C2, the zener diode D1 are included, the cathode of zener diode D1 connects
The cathode of diode D2 is connect, capacitor C2 is in parallel with zener diode D1；The positive lead road B of the diode D3, diode
Output end of the cathode of D2 as DC converting circuit.Sharp pulse is absorbed by being connected in parallel with a capacitor C2 beside zener diode
Voltage-stabiliser tube D1 is protected, practicability is increased.
Further, indicating circuit includes that light emitting diode D4 and the positive of resistance R1, the light emitting diode D4 connect
Connect the output end of DC converting circuit, one end of the cathode connection resistance R1 of light emitting diode D4, the other end conduct of resistance R1
The output end of indicating circuit.By using light emitting diode as indicator light LED, it can intuitively see whether protector is enabling
State, low energy consumption for diode, and protector is avoided to waste electric energy.
The utility model has the following advantages and benefits:
1, the utility model lives the on-off on two core power-line route by ON-OFF control circuit control；Source current passes through drop
The voltage flowed through is depressured by volt circuit；Source current after decompression becomes DC power supply using DC converting circuit, turns
DC power supply after changing is shown using display circuit, then connects main line by the control terminal of ON-OFF control circuit
Logical, main line obtains electric after connection so that the circuit of control terminal persistently it is electric, guarantee ON-OFF control circuit is in closed state；Surely
Voltage on the main line of volt circuit detection connection prevents voltage regulator circuit from protecting when if main line is because of open circuit or voltage instability
It holds, control end loop disconnects, and the indicator light of indicating circuit extinguishes, and ON-OFF control circuit disconnects, and power supply line is no longer subsequent negative
Power supply is carried, so that timely automated disconnection power supply when breaking of the conducting wire in two core power-line, subsequent to two core power-line to bear
It is loaded into capable protection, avoids generating arc fault at the broken string of two core power-line in time, to avoid the household electric of damage rear end
Device or load, or the inflammable articles for surrounding of igniting cause fire, so that it may avoid unnecessary loss of property or casualties, mention
The high safety in utilization of household electrical appliance；
2, the utility model by setting varistor Rv can abnormal overvoltage often to occur in suppression circuit, protection
Damage of the circuit from overvoltage；
3, the utility model is by using light emitting diode as indicator light LED, can intuitively see protector whether
Initiate mode, low energy consumption for diode, and protector is avoided to waste electric energy.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the utility model electrical block diagram.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment 1
As shown in Figure 1, a kind of input power cord line disconnection protector, including two core power-line, ON-OFF control circuit, decompression electricity
Road, DC converting circuit, voltage regulator circuit, indicating circuit, wherein the two lines road of two core power-line is as main line, main line
It is route A and route B respectively；The ON-OFF control circuit is connect with the route A, route B and indicating circuit；The switch
The input termination power of control circuit, one end of the output end connection line A of the ON-OFF control circuit, the other end of route A
Output end as protector；The input terminal connection line A of the reduction voltage circuit, the output end connection direct current conversion of reduction voltage circuit
The input terminal of circuit, another input terminal link B of DC converting circuit；The voltage regulator circuit is connected to route B and direct current turns
It changes between the output end of circuit；The output end of the DC converting circuit is also connected with the input terminal of indicating circuit, indicating circuit
The control terminal of output end connection switch control circuit.
When implementation, ON-OFF control circuit input terminal and route B connection plug access power supply；The power end of ON-OFF control circuit
Varistor Rv is also parallel between route B；ON-OFF control circuit includes key switch k and photo-coupler Q1, the light
Power end of the input terminal of coupler Q1 as ON-OFF control circuit, the output end of photo-coupler Q1 are the defeated of ON-OFF control circuit
Outlet, the output end of the control terminal connection display circuit of photo-coupler Q1, photo-coupler Q1 ground terminal connection line B；It is described to press
The both ends key switch k are separately connected the input terminal and output end of photo-coupler Q1；Reduction voltage circuit includes resistance R2, capacitor C1, resistance
One end of R3, the resistance R2 are connected on route A, one end of the other end connection capacitor C1 of resistance R2, capacitor C1 and resistance
R3 is in parallel；Output end of the other end of capacitor C1 as reduction voltage circuit；DC converting circuit includes diode D2 and diode
The output end of the cathode connection reduction voltage circuit of the anode and diode D3 of D3, the diode D2, the cathode of diode D2 connect
Voltage regulator circuit is connect, the voltage regulator circuit includes the anode connection of zener diode D1 and capacitor C2, the zener diode D1
The cathode of the cathode connection diode D2 of route B, zener diode D1, capacitor C2 are in parallel with zener diode D1；Two pole
The positive lead road B of pipe D3, output end of the cathode of diode D2 as DC converting circuit；Indicating circuit includes luminous two
The output end of the anode connection DC converting circuit of pole pipe D4 and resistance R1, the light emitting diode D43, light emitting diode D4
Cathode connection resistance R1 one end, output end of the other end of resistance R1 as indicating circuit.Input power cord breaking protection
The key switch K of device is pressed, and power supply is depressured through resistance R2 and R3, capacitor C1, is converted to DC voltage by diode D2 and D3,
Make optical coupling to photo-coupler Q1 control terminal by zener diode D1 and capacitor C2 pressure stabilizing, then through indicator light LED and resistance R1
Device Q1 conducting, input power cord line disconnection protector are energized state, provide power supply for the household electrical appliance of rear end.Work as power-line plug
The conducting wire in two core power-line between input power cord line disconnection protector has broken string to generate, and zener diode D1 voltage will not
It is able to maintain, photo-coupler Q1 is caused to close, input power cord line disconnection protector is automatically powered off, no longer mentioned for the household electrical appliance of rear end
Power supply source.
When it is implemented, monitoring attaching plug and input power cord are disconnected before the utility model is placed in household electrical appliance
The on off operating mode of two core power-line between line protector can also be used independently at the input terminal that independent product is connected to household electrical appliance,
It may alternatively be integrated within the front end of household appliances circuit；Can when the conducting wire in two core power-line breaks timely automated disconnection electricity
The subsequent household electrical appliance of two core power-line are protected in source, avoid generating electric arc event at the broken string of two core power-line in time
Barrier, so that household electrical appliance or the load of damage rear end, or the inflammable articles for surrounding of igniting be avoided to cause fire, so that it may avoid not
Necessary property loss or casualties improve the safety in utilization of household electrical appliance.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of input power cord line disconnection protector, which is characterized in that including two core power-line, ON-OFF control circuit, decompression electricity
Road, DC converting circuit, voltage regulator circuit, indicating circuit, wherein the two lines road of two core power-line is as main line, main line
It is route A and route B respectively；The ON-OFF control circuit is connect with the route A, route B and indicating circuit；The switch
The input termination power of control circuit, one end of the output end connection line A of the ON-OFF control circuit, the other end of route A
Output end as protector；The input terminal connection line A of the reduction voltage circuit, the output end connection direct current conversion of reduction voltage circuit
The input terminal of circuit, another input terminal link B of DC converting circuit；The voltage regulator circuit is connected to route B and direct current turns
It changes between the output end of circuit；The output end of the DC converting circuit is also connected with the input terminal of indicating circuit, indicating circuit
The control terminal of output end connection switch control circuit.
2. a kind of input power cord line disconnection protector according to claim 1, which is characterized in that the ON-OFF control circuit
Power end and route B between be also parallel with varistor Rv.
3. a kind of input power cord line disconnection protector according to claim 1, which is characterized in that the ON-OFF control circuit
Including key switch k and photo-coupler Q1, power end of the input terminal of the photo-coupler Q1 as ON-OFF control circuit, light
The output end of coupler Q1 is the output end of ON-OFF control circuit, the wherein control terminal connection display circuit of photo-coupler Q1
Output end, another control terminal connection line B of photo-coupler Q1；The both ends the key switch k are separately connected the defeated of photo-coupler Q1
Enter end and output end.
4. a kind of input power cord line disconnection protector according to claim 1, which is characterized in that the reduction voltage circuit includes
Resistance R2, capacitor C1, resistance R3, one end of the resistance R2 are connected on route A, the other end connection capacitor C1's of resistance R2
One end, capacitor C1 are in parallel with resistance R3；Output end of the other end of capacitor C1 as reduction voltage circuit.
5. a kind of input power cord line disconnection protector according to claim 1, which is characterized in that the DC converting circuit
The cathode of anode and diode D3 including diode D2 and diode D3, the diode D2 connects the defeated of reduction voltage circuit
Outlet, the cathode of diode D2 connect voltage regulator circuit, and the voltage regulator circuit includes zener diode D1 and capacitor C2, described steady
Press the positive lead road B of diode D1, the cathode of the cathode connection diode D2 of zener diode D1, capacitor C2 and pressure stabilizing two
Pole pipe D1 is in parallel；The positive lead road B of the diode D3, output of the cathode of diode D2 as DC converting circuit
End.
6. a kind of input power cord line disconnection protector according to claim 1, which is characterized in that the indicating circuit includes
The output end of the anode connection DC converting circuit of light emitting diode D4 and resistance R1, the light emitting diode D4, luminous two
One end of the cathode connection resistance R1 of pole pipe D4, output end of the other end of resistance R1 as indicating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821451662.0U CN208820453U (en) | 2018-09-05 | 2018-09-05 | A kind of input power cord line disconnection protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821451662.0U CN208820453U (en) | 2018-09-05 | 2018-09-05 | A kind of input power cord line disconnection protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208820453U true CN208820453U (en) | 2019-05-03 |
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ID=66276036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821451662.0U Active CN208820453U (en) | 2018-09-05 | 2018-09-05 | A kind of input power cord line disconnection protector |
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| Country | Link |
|---|---|
| CN (1) | CN208820453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066615A (en) * | 2018-09-05 | 2018-12-21 | 成都彩虹电器（集团）股份有限公司 | The line disconnection protector of two core power-line |
-
2018
- 2018-09-05 CN CN201821451662.0U patent/CN208820453U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066615A (en) * | 2018-09-05 | 2018-12-21 | 成都彩虹电器（集团）股份有限公司 | The line disconnection protector of two core power-line |
| CN109066615B (en) * | 2018-09-05 | 2024-02-06 | 成都彩虹电器（集团）股份有限公司 | Broken wire protector for two-core power line |
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