KR101068155B1 - Magnetic contactor with a driving device for controlling an actuator - Google Patents

Abstract

The present invention relates to an electromagnetic contactor having a driving device for controlling a manipulator, and more particularly, to a driving device capable of easily converting an input state and an open state of the electromagnetic contactor through a control signal of a gate controller. An electromagnetic contactor provided. The electromagnetic contactor according to the embodiment of the present invention includes an input coil and an open coil, and includes a manipulator for driving according to the application of current, and controls the current to be applied to the input coil and the open coil, respectively. And a driving device, wherein the driving device comprises: a power supply to which external power is applied; A bridge rectifier for rectifying the current applied through the power supply unit; A gate controller configured to control the current transmitted through the bridge rectifier to be selectively applied to the input side coil or the open side coil; An input side SCR and an open side SCR which are turned on or off under the control of the gate controller; And a power storage unit connected to an output side of the input side SCR, and accumulating charge when the input side SCR is turned on, and applying a current to the open side SCR when the open side SCR is turned on.

Description

Magnetic contactor with drive device to control manipulator {MAGNETIC CONTACTOR WITH A DRIVING DEVICE FOR CONTROLLING AN ACTUATOR}

The present invention relates to an electromagnetic contactor having a driving device for controlling a manipulator, and more particularly, to a driving device capable of easily converting an input state and an open state of the electromagnetic contactor through a control signal of a gate controller. An electromagnetic contactor provided.

The drive device is a device for moving a power mechanism such as a machine or a measuring instrument. As such a drive device, an example, which is often used in a power system, may include an electromagnetic contactor, an electromagnetic switch, a circuit breaker, and the like.

Magnetic contactors (MCs) are used to open and close power circuits in driving circuits such as motors. This usually constitutes an electronic switch (MS), such as a magnetic switch or an electromagnetic switch, together with a thermal overload relay.

In addition, the magnetic contactor is a kind of electromagnetic relay with large contact capacity and breakdown voltage. It is used to control the opening and closing of a large current or starting and stopping the motor by using the electromagnetic force. Applied to the load.

A circuit breaker (CB) is installed at the transmission end or the power receiving end of a transmission line to protect a load (electrical machine or electrical equipment) by blocking a fault current applied to a power system. Circuit breakers can be classified into circuit breakers and wiring breakers. Typically, the earth leakage breaker blocks both a short circuit and an overcurrent, and the circuit breaker blocks only a current without the short circuit. Examples of the earth leakage breaker include an electric leakage breaker (ELB), an earth leakage circuit breaker (ELCB), and the like. Further, examples of wiring breakers include a motor-protected wiring breaker (MMS), including a molded case circuit breaker (MCCB), a no fuse breaker (NFB), and the like.

The manipulator is a magnetic device such as an electromagnetic contactor, an electronic switchgear, a circuit breaker, or a mechanical device that requires an exercise device that reciprocates a certain distance periodically or intermittently, in which position (first position) and the opposite side of the reciprocating section are opposite. It is utilized as a drive mechanism (drive force generation mechanism) for linear reciprocating motion to a distant position (second position).

For example, in a manipulator used in a drive device such as an electromagnetic contactor, an electromagnetic switch or a breaker, when its mover moves to the first position, the circuit contact of the drive device is turned on (contact ON or CLOSE state), and the first When moving to the second position opposite to the position, the circuit contact of the drive device is opened (contact OFF or OPEN state).

The manipulator usually opposes the permanent magnet to the fixed iron core, arranges the mover coil wound around the coil in the magnetic field of the permanent magnet, and applies the current in the forward or reverse direction to the mover coil. The mover coils are linearly moved upwards (first position) or downwards (second position) by electron repulsion force due to density. These manipulators use full and magnetic repulsions that follow Fleming's left-hand law, and because they use the repulsive forces of permanent magnets and coils, they are less restrictive in travel length and can produce greater forces. It can be very useful for (eg high pressure circuit breaker).

However, the manipulator having the above configuration has a disadvantage in that, since the coil itself moves as a mover, it is difficult to supply a current to the moving mover coil, and the structural design for electrical insulation design and mechanical impact resistance of the mover coil is difficult.

In order to improve this problem, Korean Patent Application Nos. 2010-0001306 and 2010-0014209, filed by the present applicant and the like, disclose a magnetic contactor as a so-called 'manipulator using permanent magnets and a driving device having the same'. The contents disclosed in the patent applications 2010-0001306 and 2010-0014209 are incorporated herein by reference.

The electromagnetic contactor is configured to separate and fix the input side coil and the open side coil, and to move the mover by configuring the direction of the electromagnetic field formed when an electric current is applied to each coil. In the electromagnetic contactor having the above configuration, it is necessary to improve the means that can be easily controlled while automating the operation of the electromagnetic contactor by controlling the instant and time interval when electric power is applied to the input side coil and the open side coil.

An object of the present invention is to control the operation time of the manipulator according to the charging capacity of the power storage unit when the input (ON), through the control signal of the gate control unit, and open only by the electric power charged in the power storage unit when the OFF (OFF) It is to provide an electromagnetic contactor having a driving device capable of performing an operation.

It is another object of the present invention to provide an electronic contactor having a drive device which can control the gate control unit remotely through the communication module to easily control the operating time required to change the electromagnetic contactor into the open state and the open state. .

According to an embodiment of the present invention, an electromagnetic contactor includes an input side coil and an open side coil, and includes a manipulator for driving in response to an application of an electric current, and the input side coil and the open side coil. A driving device for controlling a current to be applied to the driving device, wherein the driving device comprises: a power supply to which external power is applied; A bridge rectifier for rectifying the current applied through the power supply unit; A gate controller configured to control the current transmitted through the bridge rectifier to be selectively applied to the input side coil or the open side coil; An input side SCR and an open side SCR which are turned on or off under the control of the gate controller; And a power storage unit connected to an output side of the input side SCR, and accumulating charge when the input side SCR is turned on, and applying a current to the open side SCR when the open side SCR is turned on.

The bridge rectifier may include a pair of forward diodes passing only forward current and a pair of reverse diodes passing only reverse current.

The power storage unit may include one or more capacitors.

When the external power is cut off and the application of the current through the power supply is cut off, the gate controller may generate a control signal for turning on the open side SCR at the same time.

The electronic contactor may further include a communication module for generating a signal for remotely controlling the operation of the gate controller.

The electronic contactor may further include a power line communication conversion module which communicates with the communication module to perform communication through a power line.

The magnetic contactor may further include an LED blinker indicating whether the magnetic contactor is in an ON state or in an OFF state.

According to another embodiment of the present invention, the electromagnetic contactor includes an input side coil and an open side coil, and includes a manipulator for driving according to the application of current, and controls the current to be applied to the input side coil and the open side coil, respectively. And a driving device, wherein the driving device comprises: a power supply to which external power is applied; A bridge rectifier for rectifying the current applied through the power supply unit; A gate controller configured to control the current transmitted through the bridge rectifier to be selectively applied to the input side coil or the open side coil; An input side transistor and an open side transistor turned on or off under the control of the gate controller; And a power storage unit connected to an output side of the bridge rectifier and configured to apply current to the open side transistor when the open side transistor is turned on.

The bridge rectifier may include a pair of forward diodes passing only forward current and a pair of reverse diodes passing only reverse current.

The power storage unit may include one or more capacitors.

The gate controller may generate a control signal to turn on the open-side transistor at the same time when external power is cut off and current application through the power supply is cut off.

The gate controller may control a time required to convert the open transistor from a turn-on state to a turn-off state.

The electronic contactor may further include a communication module for generating a signal for remotely controlling the operation of the gate controller.

The electronic contactor may further include a power line communication conversion module which communicates with the communication module to perform communication through a power line.

The magnetic contactor may further include an LED blinker indicating whether the magnetic contactor is in an ON state or in an OFF state.

The electromagnetic contactor according to another embodiment of the present invention includes a manipulator having a stator coil, a manipulator for driving according to a forward or reverse current application, and a driving device for controlling a direction of a current applied to the stator coil. The driving device may include a power supply to which external power is applied; A bridge rectifier for rectifying the current applied through the power supply unit; A gate controller controlling the current transmitted through the bridge rectifier to be selectively applied to the stator coil in the forward or reverse direction; A pair of input side transistors and a pair of open side transistors turned on or off under the control of the gate controller; And a power storage unit connected to an output side of the bridge rectifier and configured to apply current to the pair of open side transistors when the open side transistor is turned on.

The gate control unit may generate a control signal for turning on the pair of open-side transistors at the same time when external power is cut off and current application through the power supply is cut off.

The magnetic contactor may further include an LED blinker indicating whether the magnetic contactor is in an ON state or in an OFF state.

The electromagnetic contactor having the driving device according to the present invention can control the operation time of the manipulator according to the charging capacity of the power storage unit when the power is turned on, through the control signal of the gate controller, and when the power storage unit is open, Since the opening operation can be performed only by the electric power charged in the battery, unnecessary waste of power can be prevented.

In addition, the electromagnetic contactor having the driving device according to the present invention has an effect of controlling the gate control unit remotely through the communication module to easily control the operation time required to change the electromagnetic contactor into the open state and the open state. .

1 is a cross-sectional view showing an electromagnetic contactor to which the driving device of the present invention is applied.
2 is a diagram schematically showing the configuration of a drive device according to the first embodiment of the present invention.
FIG. 3 is a diagram illustrating waveforms of voltages output through the bridge rectifier shown in FIG. 2.
4 is a diagram schematically showing a configuration of a drive device according to a second embodiment of the present invention.
FIG. 5 is a diagram illustrating waveforms of voltages output through the bridge rectifier shown in FIG. 4.
6 is a view schematically showing a driving device according to a third embodiment of the present invention.
7 is a cross-sectional view showing a manipulator to which a driving device according to a fourth embodiment of the present invention is applied.
8 is a diagram schematically showing a configuration of a drive device according to a fourth embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a magnetic contactor having a drive device for controlling the manipulator according to the preferred embodiments of the present invention.

1 is a cross-sectional view showing an electromagnetic contactor to which the driving device of the present invention is applied. For the sake of understanding, first, the driving of the electromagnetic contactor in the state in which the driving device of the present invention is excluded will be described, and then the process of driving the electromagnetic contactor under the control of the driving device while the driving device is connected will be described. do.

Referring to FIG. 1, the electromagnetic contactor 100 forms an appearance by combining the lower case 111 and the upper case 112. In the front and rear directions of the upper case 112, a plurality of power supply side terminals 171 and a load side terminal 172 are partially exposed. The holder 151 of the movable contact assembly 150 is exposed on the upper surface of the upper case 112.

The movable contact assembly 150 is coupled to an upper portion of the manipulator 1000a installed in the cases 111 and 112.

The mover element 1200 is integrally coupled to the holder 151 of the movable contact assembly 150 via an extension shaft 1262 and a coupling shaft 1264, which are connecting means 1260 thereof. Thus, the movable contact assembly 150 linearly moves up and down with the mover element 1200.

The movable contact assembly 150 includes a holder 151, a movable contact 160, and a spring 163. The movable contact 160 is always installed in a state of being elastically pressed downward by the spring 163.

Movable contacts 161 and 162 are formed at both ends of the movable contact 160, respectively.

Corresponding to these movable contacts 161 and 162, a power supply side terminal 171 and a load side terminal 172 are provided on both sides of the upper case 112. Fixed terminals 181 and 182 are formed at the terminals 171 and 172, respectively.

On the other hand, the auxiliary terminal 190 is installed on one side of the case (111, 112). The auxiliary terminal 190 is connected to an external feed line for drawing a current into the input side coil 1140 and the open side coil 1150.

The stator element 1100 of the manipulator 1000a is installed at the bottom of the lower case 111.

When the mover element 1200 of the manipulator 1000a is operated to an upper second position, the movable contact assembly 150 of the electromagnetic contactor 100 is moved upward, so that the electromagnetic contactor 100 is in an open state (OFF state). At this time, since the contacts 161 and 162 of the movable contact 160 are separated from the contacts 181 and 182 of the terminals 171 and 172, the power supplied to the load side is cut off.

On the other hand, when a current is applied to the open side coil 1150 of the manipulator 1000a, the mover element 1200 is pushed upward by the repulsive force with the stator element 1100 and the elastic restoring force of the open spring 2000. In the position where the mover element 1200 has moved upward to the end (second position: the open position), when the current applied to the open side coil 1150 is interrupted, the mover element 1200 of the open spring 2000 It is supported and held in the open position (second position) only by the elastic force.

When the mover element 1200 is moved upward and held in the open position as described above, the holder 151 integrally coupled to the mover element 1200 is also maintained in the upward movement state, thereby making the contact 161 (the movable contact 160) ( The 162 is separated from the contacts 181 and 182 of the terminals 171 and 172 so that the circuit is continuously maintained in an OFF state.

When the mover element 1200 of the manipulator 1000a is operated to the lower first position, the movable contact assembly 150 of the electromagnetic contactor 100 is moved downward so that the electromagnetic contactor 100 is turned on (ON state). In this case, the contacts 161 and 162 of the movable contact 160 are attached to the contacts 181 and 182 of the terminals 171 and 172 to supply power to the load side.

That is, when a current is applied to the input side coil 1140 of the manipulator 1000a, the mover element 1200 is pulled downward toward the stator element 1100. If the current applied to the input side coil 1120 is interrupted at the position (first position: closing position) where the mover element 1200 has moved downward to the end, the magnetic field caused by the stator element 1100 disappears and the mover Element 1200 is held in the input position by the attraction between permanent magnet 1220 and fixed iron core 1120.

When the mover element 1200 moves downward in this way and is held in the closing position, the holder 151 integrally coupled thereto is continuously maintained downward. Then, the contacts 161 and 162 of the movable contact 160 are attached to the contacts 181 and 182 of the terminals 171 and 172, so that the circuit maintains the ON state.

Meanwhile, in one embodiment of the present invention, an LED blinker (not shown) is added to a predetermined position of the electromagnetic contactor 100, so that the electromagnetic contactor 100 is in an ON state or in an OFF state. You can indicate whether or not there is. For example, the display method may be configured to emit light of the LED blinker when the magnetic contactor 100 is in the closed state, and to turn off the LED blinker when the magnetic contactor 100 is in the open state, or vice versa. It may take a configuration.

Hereinafter, a configuration of a driving device capable of controlling the driving of the manipulator by controlling the currents applied to the input side coil 1140 and the open side coil 1150 will be described.

FIG. 2 is a diagram schematically showing a configuration of a driving device according to the first embodiment of the present invention, and FIG. 3 is a diagram showing waveforms of voltages output through the bridge rectifier shown in FIG. The driving device 300 of the present invention controls the driving of the manipulator 1000a of the electromagnetic contactor 100 shown in FIG. 1, and is implemented by, for example, one circuit board, and the electronic contactor 100 case 111. , 112, or may be connected to the auxiliary terminal 190 via an electric wire.

Referring to FIG. 2, the driving device 300 of the present invention includes a power supply unit 310, a bridge rectifier 320, a gate controller 330, an input side silicon controlled rectifier (SCR) 340, and a power storage unit 350. And open side SCR 360.

As shown in the drawing, the output side line of the bridge rectifier 320 and the input side line of the input side SCR 340 are connected to the input side coil 1140, and the output side line and the open side SCR 360 of the input side SCR 340. The input side line is connected to the open side coil 1150. Here, the input side coil 1140 and the open side coil 1150 is shown by a simple symbol for understanding, the function and role thereof are the same as the input side coil 1140 and the open side coil 1150 shown in FIG. Do.

When external power is applied through the power supply 310, the bridge rectifier 320 rectifies the current. The bridge rectifier 320 alternates, for example, without limitation, a pair of forward diodes 322, 326 that pass only forward current and a pair of reverse diodes 324, 328 that pass only reverse current. It can be arranged by configuring.

In the state where external power is applied, the gate control unit 330 generates a control signal for turning on the input side SCR 340, and turns off the open side SCR 360. To generate a control signal. When the input side SCR 340 is turned on, a current flows in the input side coil 1140, whereby the movable element 1200 shown in FIG. 1 moves downward, and the movable contacts 161 and 162. The fixed contacts 181 and 182 come into contact with each other.

On the other hand, when the input side SCR 340 is turned on, current flows to the input side SCR 340, and the electric current flows into the power storage unit 350 disposed on the output side of the input side SCR 340, whereby charge is generated. Accumulate. The power storage unit 350 may include one or more capacitors. When the power storage unit 350 is configured as a capacitor, the charging time of the capacitor is determined according to the capacity of the capacitor.

When the charging of the power storage unit 350 is completed, even though external power is applied, the flow of current is stopped, and the movable contacts 161 and 162 and the fixed contacts 181 and 182 of the magnetic contactor 100 maintain contact. Keep it.

That is, when the current flow applied to the input side coil 1120 is stopped, the magnetic field caused by the stator element 1100 disappears, and the movable element 1200 is attracted between the permanent magnet 1220 and the fixed core core 1120. It is held at the closing position by

Subsequently, when the external power is cut off and the power supply through the power supply 310 is cut off, the gate controller 330 generates a control signal for turning off the input side SCR 340, and the open side SCR 360. Generate a control signal that turns on. The gate controller 330 may generate a control signal simultaneously with the interruption of power supply or at a predetermined time interval. For example, as illustrated in FIG. 3, the gate controller 330 generates a control signal for turning off the input side SCR 340 when the potential of the voltage output through the bridge rectifier 320 becomes zero. can do.

When the open side SCR 360 is turned on, electric charges in the power storage unit 350 are discharged toward the open side SCR 360, so that a current flows in the open side coil 1150.

When a current is applied to the open side coil 1150, as described above, the mover element 1200 is pushed upward by the repulsive force with the stator element 1100 and the elastic restoring force of the open spring 2000. When the mover element 1200 is moved upward and held in the open completion position, the holder 151 integrally coupled thereto is also maintained in the upward movement state, so that the movable contacts 161 and 162 of the movable contact 160 are moved. ) Is separated from the fixed contacts 181 and 182 of the terminals 171 and 172 so that the circuit is maintained in an OFF state.

When all the electric charges stored in the power storage unit 350 are discharged and the current flowing in the open side coil 1150 is cut off, the mover element 1200 is opened only by the elastic force of the open spring 2000 (second position). Supported and held by

Therefore, the driving device 300 of the present invention can control the operation time of the manipulator 1000a according to the charging capacity of the power storage unit 350 when the power is turned ON through the control signal of the gate controller 330. In the case of opening (OFF), the opening operation can be performed only by the electric power charged in the power storage unit 350.

4 is a diagram schematically showing a configuration of a driving device according to a second embodiment of the present invention, and FIG. 5 is a diagram showing waveforms of voltages output through the bridge rectifier shown in FIG. 4.

Referring to FIG. 4, since the configuration of the power supply unit 410 and the bridge rectifying unit 420 is the same as that of the power supply unit 310 and the bridge rectifying unit 320 illustrated in FIG. 2, a detailed description thereof will be omitted.

Further, the driving device 400 shown in FIG. 4 has a different position of the power storage unit 440 compared to the driving device 300 shown in FIG. 2, and the input side SCR 340 and the open side SCR 360 are different. There is a difference in that the input transistor 450 and the open transistor 460 are used instead.

In addition, the central operation unit 480 is composed of a communication module 470 and the gate control unit 430, the communication module 470 generates a signal for remotely controlling the operation of the gate control unit 430.

The central operation unit 480 checks whether the external power is applied, and when the external power is applied, generates a signal for operating the gate controller 430 through the communication module 470. Accordingly, the gate controller 430 generates a control signal for turning on the input transistor 450, and generates a control signal for turning off the open transistor 460.

When the input side transistor 450 is turned on, a current flows in the input side coil 1140, whereby the movable element 1200 shown in FIG. 1 moves downward, and thus the movable contacts 161 and 162. The fixed contacts 181 and 182 come into contact with each other.

On the other hand, when the input side transistor 450 is turned on, a current flows in the input side transistor 450, and a partial current flows to the power storage unit 440 connected to the output side of the bridge rectifying unit 420, and thus, the power storage unit 440. ) Is charged. When the external power is continuously applied, unlike the input side coil 1140 of FIG. 2, the power is continuously applied to the input side coil 1140 of FIG. 3 regardless of whether the power storage unit 440 has completed charging. do.

Therefore, when sufficient current flows in the input side coil 1140 and the closing state of the electromagnetic contactor 100 shown in FIG. 1 is completed, the input side transistor 450 is cut off to block the current flowing into the input side coil 1140. You need to turn it off. The central operation unit 480 may adjust an operating time from turn-on to turn-off of the input side transistor 450, and may remotely control the gate controller 430 through the communication module 470. . As shown in FIG. 5, the voltage waveform output through the bridge rectifier 420 is a DC voltage mixed with some ripple due to the presence of the power storage unit 440. In this case, the gate of the input transistor 450 must be controlled to turn on and off. Since the input side transistor 450 is turned on between the drain and the source only while the signal is transmitted to the gate, the gate controller 430 may turn off the input side transistor 450 to turn off the input side transistor 450. By blocking the signal applied to the gate of), the current between the drain and the source of the input transistor 450 is also turned off.

When the input transistor 450 is switched from the turn-on state to the turn-off state according to the control signal of the gate controller 430, and the current flow applied to the input side coil 1120 is stopped, the stator element 1100 is stopped. The magnetic field due to disappears, the movable element 1200 is held in the input position by the attraction between the permanent magnet 1220 and the fixed iron core 1120.

Subsequently, when the external power is cut off and the power supply through the power supply 410 is cut off, the gate controller 430 generates a control signal for turning on the open-side transistor 460. The gate controller 430 may generate a control signal simultaneously with the interruption of power supply or at a predetermined time interval.

When the open side transistor 460 is turned on, electric charges in the power storage unit 440 are discharged toward the open side transistor 460, so that a current flows in the open side coil 1150.

When a current is applied to the open side coil 1150, as described above, the mover element 1200 is pushed upward by the repulsive force with the stator element 1100 and the elastic restoring force of the open spring 2000. When the mover element 1200 is moved upward and held in the open completion position, the holder 151 integrally coupled thereto is also maintained in the upward movement state, so that the movable contacts 161 and 162 of the movable contact 160 are moved. ) Is separated from the fixed contacts 181 and 182 of the terminals 171 and 172 so that the circuit is maintained in an OFF state.

When all the electric charge stored in the power storage unit 440 is discharged and the current flowing in the open side coil 1150 is cut off, the mover element 1200 is opened only by the elastic force of the open spring 2000 (second position). Supported and held by

Therefore, the driving device 400 of the present invention can remotely control the gate control unit 430 through the communication module 470 to easily control the operation time required to change the magnetic contactor 100 into the input state and the open state. can do.

6 is a view schematically showing a driving device according to a third embodiment of the present invention.

The configuration of the driving device 500 of FIG. 6 is that the power line communication conversion module 590 is further added as compared to the driving device 400 of FIG. 4, and other configurations and functions are the same as those of the driving device 400 of FIG. 4. Do.

The power line conversion module 590 communicates with the communication module 570 to perform communication through the power line. The information transmitted and received by the communication between the power line conversion module 590 and the communication module 570 is based on the power cutoff / connection, and whether or not the information sent and received as information when the power cutoff / connection is actually made. It also includes identifying information. That is, the power line communication may control the on or off state of the magnetic contactor 100, and may also monitor the on or off state of the magnetic contactor 100. In addition, the system may be configured to monitor the state of one magnetic contactor 100 so that power monitoring can be confirmed to the lowest end in a general office through an upper control computer.

7 is a cross-sectional view showing a manipulator to which a driving device according to a fourth embodiment of the present invention is applied.

The manipulator 1000b according to the present embodiment differs only in the form of the coil from the manipulator 1000a shown in FIG. 1 and the rest of the configuration is the same.

That is, in the manipulator 1000a shown in FIG. 1, the input side coil 1140 and the open side coil 1150 are divided into two in the vertical direction, but in the manipulator 1000b according to the present embodiment, one of It is made of a form having only the stator coil 1250.

The stator coil 1250 is wound in the form of a through passage 1252 in the center thereof, and the mover core 1300 is disposed in the through passage 1252 in a axially movable state. In order to easily connect the mover core 1300 to the driven element, and to facilitate the installation of the open spring 1500, a connecting member 1310 is attached to the upper end of the mover core 1300. In this embodiment, the connecting member 1310 is coupled to the mover core 1300 by a fastener 1312.

In this embodiment, the stator coil 1250 is provided, and the mover core 1300 is formed by applying forward or reverse current to one stator coil 1250 to form a flow of magnetic flux in a forward or reverse direction. It is to be moved to the first position or the second position.

The stator coil 1250 may be configured to be wound around the bobbin 1254, and at this time, the through passage 1252 becomes an inner diameter portion of the bobbin 1254. Alternatively, it is a known self-bonding type that can maintain a shape only by the coil itself without using the bobbin 1254, and can be used wound in a closed curve shape. At this time, the through passage 1252 becomes an inner diameter portion of the stator coil 1250.

When a positive current is applied to the stator coil 1250, a magnetic field is formed inside the stator coil 1250, and the mover core 1300 is magnetized. The mover core 1300 is thus pulled downward by the principle of an electromagnet following Fleming's right hand law.

If the current applied to the stator coil 1250 is interrupted at the position (first position) where the mover core 1300 moves downward to the end, the magnetic field caused by the stator coil 1250 disappears, and the mover core 1300 Is held as it is in the first position by the magnetic force of the permanent magnet 1400. That is, even after the mover core 1300 moves to the first position, even if no current is supplied to the stator coil 1250, the mover core 1300 is constrained to the first position by the magnetic force of the permanent magnet 1400. It is kept constant.

On the other hand, when the mover core 1300 is located in the first position and the reverse current is applied to the stator coil 1250, the mover core 1300 is pulled upward, that is, the second position.

If the current applied to the stator coil 1250 is interrupted at the position (second position) where the mover core 1300 moves upward to the end, the magnetic field caused by the stator coil 1250 disappears, and the mover core 1300 Is supported as it is in the second position by the elastic force of the opening spring 1500. That is, after the mover core 1300 moves to the second position, even if no current is supplied to the stator coil 1250, the mover core 1300 is supported in the second position by the elastic force of the opening spring 1500. Maintain a steady state.

The movable contact assembly 150 as shown in FIG. 1 may be coupled to an upper portion of the manipulator 1000b having the above configuration to form an electromagnetic contactor.

Hereinafter, a configuration of the driving device for applying the forward or reverse current to the stator coil 1250 described above will be described in detail.

8 is a diagram schematically showing a configuration of a drive device according to a fourth embodiment of the present invention.

Referring to FIG. 8, since the configurations of the power supply unit 610 and the bridge rectifier 620 are the same as those of the power supply unit and the bridge rectifier illustrated in FIGS. 2, 4 and 6, detailed descriptions thereof will be omitted.

Furthermore, the driving device 600 illustrated in FIG. 8 has a difference in that two transistors are used instead of using only one coil as compared to the driving device 500 illustrated in FIG. 6.

The central operation unit 700 is composed of a communication module 690 and the gate control unit 630, the communication module 690 generates a signal for remotely controlling the operation of the gate control unit 630.

The central operation unit 700 checks whether the external power is applied, and when the external power is applied, generates the signal for operating the gate controller 630 through the communication module 690. Accordingly, the gate controller 630 generates a control signal for turning on the first input side transistor 650 and the second input side transistor 660, and the first open side transistor 670 and the second open side. A control signal for turning off the transistor 680 is generated.

When the first and second input side transistors 650 and 660 are turned on, a positive current flows through the stator coil 1250, thereby moving the movable element 1300 shown in FIG. do.

On the other hand, when the first and second input side transistors 650 and 660 are turned on, some current flows to the power storage unit 640 connected to the output side of the bridge rectifying unit 620, and the power storage unit 640 is charged. When the external power is continuously applied, power is continuously applied to the stator coil 1250.

Therefore, when sufficient current flows in the stator coil 1250 and the state in which the mover core 1300 is sufficiently moved downward is completed, the first and second input side transistors (eg, to cut off the current flowing into the stator coil 1250). 650 and 660 need to be turned off. The central operation unit 700 may adjust an operating time from turn-on to turn-off of the first and second input side transistors 650 and 660, and may be controlled by the gate controller 630 through the communication module 690. Can be controlled remotely.

When the first and second input side transistors 650 and 660 are switched from the turn-on state to the turn-off state according to the control signal of the gate controller 630, the current flow applied to the stator coil 1250 is stopped. The mover core 1300 is held in the first position by the attraction force by the permanent magnet 1400.

Subsequently, when the external power is cut off and the power supply through the power supply 610 is cut off, the gate controller 630 generates a control signal for turning on the first and second open-side transistors 670 and 680. . The gate controller 630 may generate the control signal simultaneously with the interruption of power supply or at a predetermined time interval.

When the first and second open side transistors 670 and 680 are turned on, electric charges charged in the power storage unit 640 are discharged in the direction of the first and second open side transistors 670 and 680, and thus the stator coil The current flows in the reverse direction to 1250.

When a reverse current is applied to the stator coil 1250, the mover core 1300 is pushed upward by the repulsive force with the stator element 1100 and the elastic restoring force of the open spring 1500.

When all the electric charge stored in the power storage unit 640 is discharged and the current flowing in the stator coil 1250 is cut off, the mover core 1300 is supported and held in the second position by the elastic force of the opening spring 1500 alone. .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And additions should be considered as falling within the scope of the following claims.

100: electronic contactor
111: lower case
112: upper case
151: holder
160: operation contactor
161, 162: movable contact
171: power supply terminal
172: load side terminal
181, 182: fixed contacts
190: auxiliary terminal
300, 400, 500: drive device
310, 410, 510: power supply
320, 420, 520: bridge rectifier
330, 430, 530: gate control
340: input side SCR
350, 440, 540: power storage unit
360: open side SCR
450, 550: input transistor
460, 560: open side transistor
470, 570: communication module
480, 580: central operation unit
590: power line communication conversion module
1000a: manipulator
1100: Stator Element
1120: fixed iron core
1140: input side coil
1150: open side coil
1200: mover element
2000: opening spring

Claims (18)

An electromagnetic contactor having an input side coil and an open side coil, and having a manipulator for driving in response to the application of an electric current,
A driving device for controlling a current to be applied to the input side coil and the open side coil,
The drive device,
A power supply unit to which external power is applied;
A bridge rectifier for rectifying the current applied through the power supply unit;
A gate controller configured to control the current transmitted through the bridge rectifier to be selectively applied to the input side coil or the open side coil;
An input side SCR and an open side SCR which are turned on or off under the control of the gate controller; And
A power storage unit connected to an output side of the input side SCR, the charge side accumulates when the input side SCR is turned on, and applies a current to the open side SCR when the open side SCR is turned on; An electromagnetic contactor provided with a drive device. The driving device as set forth in claim 1, wherein the bridge rectifier includes a pair of forward diodes passing only forward current and a pair of reverse diodes passing only reverse current. Electronic contactor. 2. The magnetic contactor of claim 1, wherein the power storage portion includes one or more capacitors. The driving device as claimed in claim 1, wherein the gate controller generates a control signal for turning on the open side SCR at the same time when external power is cut off and current application through the power supply is cut off. Electronic contactor. 2. The magnetic contactor of claim 1, further comprising a communication module for generating a signal for remotely controlling the operation of said gate control. 6. The magnetic contactor of claim 5, further comprising a power line communication conversion module in communication with the communication module to perform communication over a power line. 2. The magnetic contactor of claim 1 further comprising an LED flasher to indicate whether the magnetic contactor is in an ON or OFF state. An electromagnetic contactor having an input side coil and an open side coil, and having a manipulator for driving in response to the application of an electric current,
A driving device for controlling a current to be applied to the input side coil and the open side coil,
The drive device,
A power supply unit to which external power is applied;
A bridge rectifier for rectifying the current applied through the power supply unit;
A gate controller configured to control the current transmitted through the bridge rectifier to be selectively applied to the input side coil or the open side coil;
An input side transistor and an open side transistor turned on or off under the control of the gate controller; And
And a power storage unit connected to an output side of the bridge rectifying unit, and configured to apply current to the open side transistor when the open side transistor is turned on. 9. The driving device as set forth in claim 8, wherein the bridge rectifier includes a pair of forward diodes passing only forward current and a pair of reverse diodes passing only reverse current. Electronic contactor. 10. The magnetic contactor of claim 8, wherein the power storage portion includes one or more capacitors. 9. The driving device of claim 8, wherein the gate controller generates a control signal for turning on the open-side transistor at the same time when external power is cut off and current application through the power supply is cut off. Electronic contactor. 9. The contactor with a drive device according to claim 8, wherein the gate control part controls the time taken to turn the open-side transistor from a turn-on state to a turn-off state. 10. The magnetic contactor of claim 8, further comprising a communication module for generating a signal for remotely controlling the operation of said gate control. 15. The magnetic contactor of claim 13, further comprising a power line communication conversion module in communication with the communication module to perform communication over a power line. 9. The magnetic contactor of claim 8 further comprising an LED blinker indicating whether the magnetic contactor is in an ON or OFF state. An electromagnetic contactor comprising a stator coil and a manipulator for driving in response to application of current in a forward or reverse direction.
A drive device for controlling the direction of the current applied to the stator coils,
The drive device,
A power supply unit to which external power is applied;
A bridge rectifier for rectifying the current applied through the power supply unit;
A gate controller controlling the current transmitted through the bridge rectifier to be selectively applied to the stator coil in the forward or reverse direction;
A pair of input side transistors and a pair of open side transistors turned on or off under the control of the gate controller; And
And a power storage unit connected to an output side of the bridge rectifier and configured to apply current to the pair of open-side transistors when the open-side transistor is turned on. 17. The driving device of claim 16, wherein the gate controller generates a control signal to turn on the pair of open-side transistors at the same time when external power is cut off and current application through the power supply is cut off. Electronic contactor having a. 17. The magnetic contactor of claim 16 further comprising an LED blinker to indicate whether the magnetic contactor is in an ON or OFF state.

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