KR20160137252A - Electric outlet apparatus for intercepting standbypower - Google Patents

Electric outlet apparatus for intercepting standbypower Download PDF

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Publication number
KR20160137252A
KR20160137252A KR1020150072127A KR20150072127A KR20160137252A KR 20160137252 A KR20160137252 A KR 20160137252A KR 1020150072127 A KR1020150072127 A KR 1020150072127A KR 20150072127 A KR20150072127 A KR 20150072127A KR 20160137252 A KR20160137252 A KR 20160137252A
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KR
South Korea
Prior art keywords
contact
power
unit
relay
auxiliary
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KR1020150072127A
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Korean (ko)
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KR101808647B1 (en
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빙인섭
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빙인섭
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
    • H01R13/7036—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part the switch being in series with coupling part, e.g. dead coupling, explosion proof coupling
    • H01R13/7038—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part the switch being in series with coupling part, e.g. dead coupling, explosion proof coupling making use of a remote controlled switch, e.g. relais, solid state switch activated by the engagement of the coupling parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature

Abstract

The present invention relates to a smart outlet having a stand-by power cut-off function, and more particularly to a smart outlet having a standby power cut-off function in which an operation power source for controlling a separate socket is not required, A power connection unit connected to the power supply unit; A relay contact for opening / closing the AC power supply to the power connection part; A DC converter for temporarily converting the AC power to a DC power according to operation of an ON switch; A latching relay unit for latching the relay contact when the DC power converted by the DC converting unit is input to supply the AC power to the power connection unit; A current sensing transformer for measuring a current supplied to a load connected to the power connection portion; When an overcurrent surplus is output from the current sensing transformer, an NC contact for outputting a reset signal to the latching relay unit is opened. When a current of less than standby power is output, the NC contact is closed to output a reset signal to the latching relay unit And an auxiliary relay unit outputting the relay contact and short-circuiting the relay contact.

Description

[0001] Electric outlet apparatus for intercepting standby power [

The present invention relates to a smart outlet having a standby power cutoff function, and more particularly, to a smart outlet having a standby power cutoff function in which an operation power source for controlling a separate outlet is not required.

Generally, an outlet is a device used to connect an electric wire to a cord via a plug, and is used to supply electric power to an electric / electronic device.

Depending on the method of installation, the outlet may be classified as exposed type or buried type, depending on the rated voltage and rated current, such as 100V, 220V, 10 ~ 50A. The types are different.

Such a conventional outlet is troublesome to disconnect the plug from the outlet when the electric / electronic apparatus is not used. Especially when the receptacle is covered by office equipment such as furniture and desks, There is a problem in that it is difficult or impossible to effectively use an outlet provided on a wall surface or the like.

In addition, when the electric / electronic apparatus is not used, there is a problem that the power is wasted by the micro current through the plug inserted into the socket when the plug is not disconnected from the socket.

In particular, when a plug of an electric / electronic device is inserted into an outlet, it is often used in a state where it is left untouched in most cases, and a loss of energy due to consumption of a standby current consumed in the electric / to be.

In order to solve such a problem, Japanese Utility Model Application No. 20-1999-0029051 discloses a technique for a multi-receptacle with an infrared sensor switch. In this technology, infrared rays emitted from a human body are transmitted to an infrared sensor switch A standby power cut-off receptacle device has been recently released that detects the standby state of an electronic product in an outlet and automatically cuts off power supplied to the electronic product to prevent consumption of standby power.

A conventional standby power cut-off receptacle device stores a current used in an electronic product or a standby current when an electronic product is not used when the electronic product is used as a reference value, measures a current flowing in the current electronic product, It is determined whether the electronic product is in the use state or the standby state.

However, when the conventional standby power cut-off receptacle device judges the use state and the standby state based on only the current reference value, the conventional standby power cut-off receptacle device may malfunction depending on the type of the electronic product and operate a control section such as a microcomputer There is a problem that an operation power source is required.

(0001) Patent No. 1425101 (0002) Patent No. 1358152 (0003) Patent No. 1298185 (0004) Patent No. 1284898

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a smart outlet having a standby power cutoff function that does not require any operation power for operating a controller such as a microcomputer do.

According to an aspect of the present invention,

A power connection portion connected to the AC power source and electrically connected to the electronic product;

A relay contact for opening / closing the AC power supply to the power connection part;

A DC converter for temporarily converting the AC power to a DC power according to operation of an ON switch;

A latching relay unit for latching the relay contact when the DC power converted by the DC converting unit is input to supply the AC power to the power connection unit;

A current sensing transformer for measuring a current supplied to a load connected to the power connection portion;

When an overcurrent surplus is output from the current sensing transformer, an NC contact for outputting a reset signal to the latching relay unit is opened. When a current of less than standby power is output, the NC contact is closed to output a reset signal to the latching relay unit And an auxiliary relay unit connected to the relay contact unit to output the relay contact, wherein the relay contact is short-circuited.

An NO contact for opening and closing between the NC contact and the latching relay,

And a self-holding circuit portion for closing and holding the NO contact by the operation of the auxiliary relay portion.

Particularly, the self-holding circuit portion includes an auxiliary contact 1 that is opened and closed by the auxiliary relay portion, a magnetic holding relay portion that operates when the auxiliary contact portion 1 is closed due to the operation of the auxiliary relay portion, It is preferable that the auxiliary contact 2 is closed and connected to the auxiliary contact 1 in parallel.

It is preferable that a fixed resistor is connected to the current sensing transformer, more preferably a variable resistor is connected.

And a photocoupler is connected between the current sensing transformer and the auxiliary relay unit.

According to another aspect of the present invention, there is provided an electronic device including an NO contact connected between the NC contact and the current sensing transformer and opened and closed by the auxiliary relay, and a capacitor charged when the NO contact is closed by the operation of the auxiliary relay,

The capacitor outputs a reset signal to the latching relay while being discharged to the NC contact which is closed when the auxiliary relay part is turned off by outputting a current of less than standby power from the current sensing transformer.

An auxiliary capacitor connected in parallel to the auxiliary relay unit may be provided to maintain the operation of the auxiliary relay unit for a predetermined period of time.

Further, according to the present invention,

A power connection unit connected to the AC power source and electrically connected to the electronic product having the USB port;

A relay contact for opening / closing the AC power supply to the power connection part;

A DC converter for temporarily converting the AC power to a DC power according to operation of an ON switch;

A latching relay unit for latching the relay contact when the DC power converted by the DC converting unit is input to supply the AC power to the power connection unit;

A USB connection unit connected to a USB port of the electronic product;

When an electric current is input from the USB port of the electronic product to the USB connection unit, an NC contact for outputting a reset signal to the latching relay unit is opened, and if the current is not inputted to the USB connection unit, the NC contact is closed, And an auxiliary relay unit to which a reset signal is output to short-circuit the relay contact.

In particular, a NO contact is connected to the NC contact and opened and closed by the auxiliary relay, and a capacitor is stored when the NO contact is closed by the operation of the auxiliary relay,

The capacitor is discharged to the NC contact which is closed when the auxiliary relay part is turned off because no current is inputted from the USB connection part, and the reset signal is outputted to the latching relay part.

The smart outlet having the standby power interruption function of the present invention can shut off the standby power by the latching relay portion, the current sensing transformer and the auxiliary relay portion without the control portion of the microcomputer unlike the conventional standby power cut-off receptacle, There is an effect that a complete power saving function such as absence can be realized.

FIG. 1 is a schematic view of a smart outlet having a standby power cutoff function according to an embodiment of the present invention,
2 is a circuit diagram schematically showing a configuration of a smart outlet having a standby power cutoff function.
3 is a circuit diagram schematically showing a configuration of a smart outlet having a standby power cutoff function according to another embodiment of the present invention.
4 is a circuit diagram schematically showing a configuration of a smart outlet having a standby power shutdown function according to still another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the scope of the present invention is not limited to the following embodiments.

FIG. 1 is a schematic view of a smart outlet having a standby power cutoff function according to an embodiment of the present invention, and FIG. 2 is a circuit diagram schematically showing a configuration of a smart outlet having a standby power cutoff function.

The smart outlet having the stand-by power cut-off function of the present invention temporarily supplies the alternating current power to the power source connecting portion 20 in accordance with the operation of the relay contact 341 and the ON switch 310, A latching relay unit 340 for latching the relay contact 341 when the DC power converted by the DC converting unit 330 is input, a latching unit 340 for latching the relay contact 341, And an auxiliary relay unit 350 for outputting a reset signal to the latching relay unit 340 in accordance with the current output from the current sensing transformer 350. [ 360).

First, the AC power may be drawn through the power plug 10 of FIG. 1, but not limited thereto.

The power connection unit 20 is composed of a connection port to which an external plug of a load such as an electronic product is connected. Of course, the connector may be formed of one or more connectors.

A relay contact point 341 for opening and closing the AC power source to the power connection part 20 is provided and the relay contact point 341 is operated by the latching relay part 340. The relay contact 341 is a normally open contact. When the DC power is input to the latching relay part 340, the relay contact 341 is operated to latch the AC power, and the AC power is supplied to the power connection part 20.

The DC converter 330 temporarily converts AC power to DC power according to the operation of the ON switch 310 and supplies the AC power to the latching relay unit 340. It is needless to say that the AC power source can be supplied to the DC converting unit 330 while being depressed by 12V or the like by the transforming unit 320 as shown in FIG.

The current sensing transformer 350 is disposed between the relay contact point 341 and the power connection part 20 for measuring a current supplied to a load connected to the power connection part 20. When the AC power is supplied to the power connection unit 20, an induction current is output from the current sensing transformer 350.

The auxiliary relay unit 360 is operated by an induction current output from the current sensing transformer 350. More specifically, when the induced current outputted from the current sensing transformer 350 exceeds the standby power, the auxiliary relay unit 360 opens the NC contact 361 for outputting a reset signal to the latching relay unit 340 . When the induced current output from the current sensing transformer 350 is less than the standby power, the auxiliary relay unit 360 closes the NC contact 361 and becomes the NC contact 361, The relay contact 341 is short-circuited. When the relay contact 341 is short-circuited, the AC power supply to the power connection unit 20 is intrinsically disconnected.

The present invention is not controlled by a control unit such as a microcomputer unlike a conventional stand-off power outlet, but operates the latching relay unit 340 in an analog manner by the induction current of the current sensing transformer 350, It is possible to realize a complete power saving function which requires no operation power at all.

Meanwhile, a fixed resistor corresponding to the standby power of the electronic product connected to the power connection unit 20 is connected to the current sensing transformer 350. In particular, since the standby power is different for each electronic product, and accordingly, the induction current output from the current sensing transformer 350 is different, a variable resistor 352 is connected in place of the fixed resistor to output to the auxiliary relay unit 360 It is preferable to adjust the induced current.

In particular, the photocoupler 354 may be connected between the current sensing transformer 350 and the auxiliary relay unit 360. The photocoupler 354 protects the current sensing transformer 350 and allows the user to easily adjust the variable resistor 352 to match an electronic product. The photocoupler 354 is configured to emit light when the intensity of the induction current output from the current sensing transformer 350 is adjusted by adjusting the variable resistor 352. Thus, Lt; RTI ID = 0.0 > 352 < / RTI >

And an NO contact point 374 which is opened and closed between the NC contact point 361 and the latching relay part and is short-circuited by the operation of the auxiliary relay part 360 is provided.

And a self-holding circuit portion 370 for self-sustaining the NO contact point 374.

The self-holding circuit unit 370 is operated when the auxiliary contact 1 371 is opened and closed by the auxiliary relay unit 360 and when the auxiliary contact unit 371 is closed by operating the auxiliary relay unit 360 And a second auxiliary contact 2 372 which is closed when the self-holding relay unit 373 is operated and is connected in parallel to the auxiliary contact 1 371.

Next, the operation procedure of the smart outlet having the standby power cutoff function, which is one embodiment of the present invention, will be described as follows.

When the ON switch 310 is operated to turn on the switch while the electronic product is connected to the power connection unit 20, power is temporarily supplied to the DC conversion unit 330. When DC power is supplied to the DC converting unit 330 and DC power is inputted to the latching relay unit 340, the relay contact 341 is operated to latch. When the relay contact 341 is latched and mounted, an AC power is supplied to the power connection unit 20. When the AC power is supplied to the power connection unit 20, an induction current is output from the current sensing transformer 350. When the electronic product connected to the power connection unit 20 is driven, the current sensing transformer 350 outputs a relatively large induction current for driving the auxiliary relay unit 360. When the relatively large induction current is output from the current sensing transformer 350, the auxiliary relay unit 360 operates and the auxiliary relay unit 360 opens the NC contact 361, The auxiliary contact 1 371 is closed.

When the auxiliary contact 1 371 of the self-holding circuit portion 370 is closed, the self-holding relay portion 373 operates and the NO contact and the auxiliary contact 2 372 are closed and self-maintained.

When an electronic product connected to the power connection unit 20 is in a standby power state, an inductive current that is insufficient for operating the auxiliary relay unit 360 is output from the current sensing transformer 350, 360 are turned off. When the auxiliary relay unit 360 is turned off, the NC contact 361 for outputting a reset signal to the latching relay unit 340 is closed and a reset signal is input to the latching relay unit 340. When the reset signal is input to the latching relay unit 340, the relay contact point 341 is turned off, and the power to the power connection unit 20 is completely cut off.

When the OFF switch is pushed, a reset signal is inputted to the latching relay part 340 and the latching part 340 turns off the relay contact 341 so that the power supply to the power connecting part 20 is completely shut off do.

3 is a circuit diagram schematically showing a configuration of a smart outlet having a standby power cutoff function according to another embodiment of the present invention.

The ON / OFF switch 310, the OFF switch 380, the transforming unit 320, the DC converting unit 330, the latching relay unit (not shown) of the smart outlet having the standby power shutdown function according to another embodiment of the present invention The relay contact 341, the current sensing transformer 350, the variable resistor 352, the photocoupler 354, the auxiliary relay unit 360 and the NC contact 361 are described in an embodiment and its configuration and function The detailed description will be omitted.

An NO contact 362 connected between the NC contact 361 and the current sensing transformer 350 to be opened and closed by the auxiliary relay unit 360 and an NO contact 362 opened and closed by the auxiliary relay unit 360, And a capacitor 390 that is charged when the capacitor 362 is closed.

The capacitor 390 is discharged to the NC contact 361 which is closed when the auxiliary relay part 360 is turned off by outputting a current of less than standby power from the current sensing transformer 350 and the latching part 340 And outputs a reset signal. When a reset signal is output to the latching relay unit 340, the latching relay unit 340 short-circuits the relay contact 341, thereby completely cutting off the power supply to the power connection unit 20.

And an auxiliary capacitor 395 connected in parallel to the auxiliary relay unit 360 to maintain the operation of the auxiliary relay unit 360 for a predetermined period of time.

If the ON switch 310 is pushed while the electronic product is connected to the power connection unit 20 and the AC power is supplied to the DC converting unit 330 temporarily, the DC power converted by the DC converting unit 330 The latching relay part 340 is operated to latch the relay contact 341 to supply the AC power to the power connection part 20.

When the electronic product is driven in the state that the AC power is supplied to the power connection unit 20, an induction current of an intensity capable of driving the auxiliary relay unit 360 is output from the current sensing transformer 350, The auxiliary relay unit 360 operates by the induction current output from the transformer 350. [ When the auxiliary relay unit 360 is operated, the NC contact 361 is opened and the NO contact 362 is closed. When the NO contact 362 is closed, power is supplied to the capacitor 390 and stored. An auxiliary capacitor 395 connected in parallel to the auxiliary relay unit 360 is also charged.

In this state, when the electronic product is changed to the standby power state, if a low induced current is output from the current sensing transformer 350, the auxiliary capacitor unit 395 is completely discharged and the auxiliary relay unit 360 is turned off. When the relay unit 360 is turned off, the NC contact 361 is closed and the NO contact 362 is opened. The power stored in the capacitor 390 is discharged to the latching relay unit 340 through the NC contact 361 to output a reset signal. When the reset signal is inputted to the latching relay part 340, the relay contact point 341 is short-circuited, thereby completely cutting off the supply of the AC power to the power connection part 20. [

4 is a circuit diagram schematically showing a configuration of a smart outlet having a standby power shutdown function according to still another embodiment of the present invention.

A power connection unit 20, an ON switch 310, an OFF switch 380, a transformer 320, a DC converter 330, a latching relay unit 330, 3, the relay contact 341, the auxiliary relay 360, the NC contact 361, the NO contact 362, and the capacitor 390 are the same as those of the third embodiment shown in FIG. 3, Is omitted.

A smart outlet having a standby power shutdown function according to another embodiment of the present invention is provided with a USB connection unit 359 as shown in FIG. 4 instead of the current sensing transformer of the other embodiment of FIG.

The USB connection unit 359 is connected to a USB port of an electronic product connected to the AC power source. Examples of the electronic product include a desktop computer having a USB port, a TV, audio, and a set-top box.

When a current is inputted from the USB port of the electronic product to the USB connection unit 359, the NC contact 361 for outputting a reset signal to the latching relay unit 340 is opened, and the current The NC contact 361 is closed and a reset signal is outputted to the latching relay unit 340 so that the relay contact point 341 is short-circuited.

An NO contact point 362 connected to the NC contact point 361 and opened and closed by the auxiliary relay unit 360 and an auxiliary contact part 362 when the NO contact point 362 is closed by the operation of the auxiliary relay part 360, A capacitor 390 is provided.

The capacitor 390 is discharged to the NC contact 361 that is closed when the auxiliary relay unit 360 is turned off because no current is inputted from the USB connection unit 359 and the latching unit 340 is reset And outputs a signal.

When the electronic product is connected to the power connection unit 20 and the USB connection unit 359 is connected to the USB port of the electronic product, the ON switch 310 is temporarily pushed to the DC conversion unit 330 When the AC power is supplied, the DC power converted by the DC converting unit 330 operates the latching relay unit 340 to latch the relay contact 341 to supply the AC power to the power connecting unit 20 .

When the electronic product is driven in the state that the AC power is supplied to the power connection unit 20, current is outputted from the USB port of the electronic product. When a current is inputted from the USB port of the electronic product to the USB connection unit 359, The auxiliary relay unit 360 operates. When the auxiliary relay unit 360 is operated, the NC contact 361 is opened and the NO contact 362 is closed. When the NO contact 362 is closed, power is supplied to the capacitor 390 and stored.

In this state, when the electronic product is changed to the standby power state, no current is outputted from the USB port of the electronic product. Accordingly, as the current is not input from the USB connection unit 359 to the auxiliary relay unit 360, the auxiliary relay unit 360 is turned off.

When the auxiliary relay unit 360 is turned off, the NC contact 361 is closed and the NO contact 362 is opened. The power stored in the capacitor 390 is discharged to the latching relay unit 340 through the NC contact 361 to output a reset signal. When the reset signal is inputted to the latching relay part 340, the relay contact point 341 is short-circuited, thereby completely cutting off the supply of the AC power to the power connection part 20. [

10: power plug, 20: power connection,
310: ON switch, 320: Transformer section,
330: DC conversion unit, 340: Latching relay unit,
341: Relay contact, 350: Current sensing transformer,
352: variable resistor, 354: photo coupler,
360: auxiliary relay unit, 361: NC contact point,
362, 374: NO contact, 370: magnetic holding circuit part,
380: OFF switch, 390: Capacitor,
395: auxiliary capacitor

Claims (11)

A power connection portion connected to the AC power source and electrically connected to the electronic product;
A relay contact for opening / closing the AC power supply to the power connection part;
A DC converter for temporarily converting the AC power to a DC power according to operation of an ON switch;
A latching relay unit for latching the relay contact when the DC power converted by the DC converting unit is input to supply the AC power to the power connection unit;
A current sensing transformer for measuring a current supplied to a load connected to the power connection portion;
When an overcurrent surplus is output from the current sensing transformer, an NC contact for outputting a reset signal to the latching relay unit is opened. When a current of less than standby power is output, the NC contact is closed to output a reset signal to the latching relay unit And the relay contact is short-circuited when the relay contact is short-circuited.
The method according to claim 1,
An NO contact for opening and closing between the NC contact and the latching relay,
And a self-holding circuit part for closing and holding the NO contact by the operation of the auxiliary relay part.
3. The method of claim 2,
The self-
An auxiliary contact 1 opened and closed by the auxiliary relay unit; a magnetic holding relay unit operated when the auxiliary relay unit is operated and the auxiliary contact 1 is closed; and, when the self-holding relay unit is operated, And an auxiliary contact (2) connected in parallel.
The method of claim 3,
And a fixed resistor or a variable resistor is connected to the current sensing transformer.
5. The method of claim 4,
And a photocoupler is connected between the current sensing transformer and the auxiliary relay unit.
The method according to claim 1,
An NO contact connected between the NC contact and the current sensing transformer and opened and closed by the auxiliary relay unit and a capacitor charged when the NO contact is closed by the operation of the auxiliary relay unit,
Wherein the capacitor outputs a reset signal to the latching relay while being discharged to the NC contact which is closed when the auxiliary relay part is turned off by outputting a current of less than standby power from the current sensing transformer. Smart outlet.

The method according to claim 6,
And an auxiliary capacitor connected in parallel to the auxiliary relay unit to maintain the operation of the auxiliary relay unit for a predetermined period of time.
8. The method of claim 7,
And a fixed resistor or a variable resistor is connected to the current sensing transformer.
9. The method of claim 8,
And a photocoupler is connected between the current sensing transformer and the auxiliary relay unit.
A power connection unit connected to the AC power source and electrically connected to the electronic product having the USB port;
A relay contact for opening / closing the AC power supply to the power connection part;
A DC converter for temporarily converting the AC power to a DC power according to operation of an ON switch;
A latching relay unit for latching the relay contact when the DC power converted by the DC converting unit is input to supply the AC power to the power connection unit;
A USB connection unit connected to a USB port of the electronic product;
When an electric current is input from the USB port of the electronic product to the USB connection unit, an NC contact for outputting a reset signal to the latching relay unit is opened, and if the current is not inputted to the USB connection unit, the NC contact is closed, And an auxiliary relay unit to which a reset signal is output to short-circuit the relay contact.
11. The method of claim 10,
An NO contact connected to the NC contact and opened and closed by the auxiliary relay unit and a capacitor charged when the NO contact is closed by the operation of the auxiliary relay unit,
Wherein the capacitor is discharged to the NC contact which is closed when the auxiliary relay part is turned off because no current is inputted from the USB connection part and the reset signal is outputted to the latching relay part. .
KR1020150072127A 2015-05-22 2015-05-22 Electric outlet apparatus for intercepting standbypower KR101808647B1 (en)

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KR1020150072127A KR101808647B1 (en) 2015-05-22 2015-05-22 Electric outlet apparatus for intercepting standbypower

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