KR20110094658A - Electro magnetic actuator using a permanent magnet and a spring, and driving apparatus with the same - Google Patents

Abstract

PURPOSE: An electromagnetic actuator using a permanent magnet and a spring and a driving device with the same are provided to continuously maintain a complete operation state by the magnetic power of the permanent magnet and the spring, thereby preventing waste of power. CONSTITUTION: A fixed metal core(1100) is made of a magnetic material. An input side coil(1210) and an open side coil(1220) are arranged in the fixed metal core. A movable element core(1300) is moved by a magnetic field which is generated by the excitation of the input side coil and the open side coil. A permanent magnet(1400) holds the movable element core at a first location. An opening spring(1500) is placed between the movable element core and the fixed metal core.

Description

Manipulator using permanent magnets and springs, and driving device having the same {ELECTRO MAGNETIC ACTUATOR USING A PERMANENT MAGNET AND A SPRING, AND DRIVING APPARATUS WITH THE SAME}

The present invention relates to an electromagnet manipulator and a drive device having the same. More specifically, the movable iron core is operated by an electromagnetic force according to the excitation of the stator coil, and after completion of the operation, the magnetic force and the spring of the permanent magnet are not supplied. The present invention relates to a manipulator using a permanent magnet and a spring, which can continuously maintain a state moved by the force of the power, which consumes less power and is simple in structure and easy to manufacture. The present invention also relates to a drive device having such a manipulator as an operation mechanism with low power consumption and electrical and mechanical stability.

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).

17 shows an example in which a driving apparatus called a magnetic contactor is constructed using a conventional manipulator.

As shown in FIG. 17, the drive device 10 in the form of an electromagnetic contactor includes a lower case 11, an upper case 12, and a manipulator 20.

The manipulator 20 uses a solenoid and a spring, and includes a fixed iron core 21, a movable iron core 22, a stator coil 30, and a return spring 40. The stator coil 30 is wound around a bobbin 31. The return spring 40 is a so-called "compression coil spring" and elastically presses the movable iron core 22 in a direction away from the fixed iron core 21.

The movable contact assembly 50 is coupled to the movable iron core 22. The movable contact assembly 50 includes a holder 51, a movable contact 60 and a spring 63. Movable contacts 61 and 62 are formed at both ends of the movable contact 60, respectively.

Corresponding to the movable contacts 61 and 62, the power supply side terminal 71 and the load side terminal 72 are provided on both sides of the upper case 12. The terminals 71 and 72 are formed with fixed contacts 81 and 82, respectively.

On the other hand, the extension portion 32 of the bobbin 31 is exposed to one side of the lower case 11, the coil terminal 33 is provided at the end of the extension portion (32). In this coil terminal 33, an external feed line (not shown) and a stator coil 30 side feed line (not shown) are connected so that a control current can be supplied to the coil 30.

In the driving device 10 in the form of an electromagnetic contactor, the movable iron core 22 and the holder 51 are moved upward by the elastic pressing force of the return spring 40 in the open state. Accordingly, the contacts 61 and 62 of the movable contact 60 are separated from the contacts 81 and 82 of the terminals 71 and 72. Therefore, the main circuit is opened to cut off the supply of current.

In this state, when a current is supplied to the coil terminal 33 by the controller, the stator coil 30 is excited to form a magnetic field. The movable iron core 22 is pulled toward the fixed iron core 21 by the magnetic field, compresses the return spring 40 and attaches to the fixed iron core 21. As the holder 51 is moved downward in accordance with the downward movement of the movable iron core 22, the movable contacts 51 and 52 of the movable contact 50 are respectively fixed fixed 81 and the load-side terminal 72 of the power terminal 71; Is applied to the fixed contact 82 of Therefore, the main circuit is closed to supply current to the load.

Next, when the current supply to the stator coil 30 of the electromagnetic contactor in the closed state is interrupted, the force pulling the movable iron core 22 is removed. As a result, the movable iron core 22 and the holder 51 are moved upward by the restoring force of the return spring 40 so that the movable contacts 61 and 62 are separated from the fixed contacts 81 and 82 to open the circuit.

The manipulator 20 used in such a conventional driving device is formed in the form of a solenoid type magnetic actuator, and in order to maintain the closing state, the manipulator 20 must overcome the elastic pressing force of the return spring 40, and in order to do so, the stator coil 30 There is a problem that the current must be supplied continuously.

Although the amount of current supplied to the stator coils to maintain the input state is small, the amount of power consumed is very high to continuously supply them for several to several tens of hours or days. In addition, the continuous supply of current generates heat in the stator coils and conducts them to the fixed core. Then, the electromagnetic force pulling the movable iron core is reduced, so that the contact state of the contact may be incomplete.

In addition, in the input state, an accident may occur in which a current is not supplied to the stator coil due to a problem of a circuit or a current source for flowing current to the stator coil. This immediately cuts off the power supplied to the load (used by the motor, etc.), which impacts or forces the load, causing unexpected mechanical and electrical accidents and industrial losses.

Meanwhile, Korean Patent Publication No. 10-0899432 issued to the present applicant discloses an electromagnetic contactor using so-called 'EMFA (Electro-Magnetic Force Driving Actuator)' as a driving mechanism. EMFA places permanent magnets against fixed iron cores, arranges coils wound around coils in the magnetic field of permanent magnets, and applies current in the forward or reverse direction to the movable coils. By the electromagnetic repulsion force, the mover coil is linearly moved upwards (first position) or downwards (second position). This EMFA is based on Fleming's left-handed repulsive force and uses the repulsive force of permanent magnets and coils. It can be very useful for (eg high pressure circuit breaker).

However, EMFA is difficult to supply electric current to the moving mover coil because the coil moves as a mover, and the feeder line may be fatigued and damaged by the movement of the mover coil.

In addition, EMFA has a disadvantage in that the design of the electrical insulation of the mover coil and the structural design for mechanical impact resistance are difficult. For example, the mover of EMFA has a coil and iron core, and in actual application, the coil, iron core and the above-mentioned coils are formed in four corners of the mover in order to insulate and impart impact resistance. Since the molding process is required to enclose the pillar, the manufacturing process is complicated and the manufacturing cost is increased.

Therefore, in the present invention, the current is supplied to the coil only during the ON or OFF operation, and the permanent magnet or the spring maintains the state even when the mover does not supply the coil to the input or open position. It is an object of the present invention to provide an improved manipulator.

In addition, it is an object of the present invention to provide a manipulator that is electrically and mechanically stable, simple in structure, easy to manufacture, and low in manufacturing cost since there is no need to supply electricity to the mover.

Furthermore, the present invention aims to expand the scope of the manipulator by allowing the size of the operating force to be easily changed according to the applied capacity, while allowing the operating force to be easily changed in response to the strength of the force required at the time of closing and opening. It is done.

In addition, an object of the present invention is to provide a drive device which uses such a manipulator as a drive mechanism and which is low in power consumption and which is electrically and mechanically stable.

In order to achieve the above object, the manipulator according to one aspect of the present invention, a fixed iron core made of a magnetic body; An input side coil and an open side that are wound in the form of a through-path in a vertical direction at the center thereof, are arranged and fixed inside the fixed iron core, and form electromagnetic circuits in opposite directions independent of each other by application of independent currents to each other. coil; It is inserted into the penetration path of the input side coil and the open side coil in a axially movable state, and moves to the first position or the second position by a magnetic field generated by the excitation of the input side coil or the open side coil. Purple core; It is installed inside the fixed iron core, and permanently holds the mover core to the first position by its own magnetic force when current is interrupted to the input side coil and the open side coil at the time when the mover core moves to the first position. magnet; And interposed between the mover core and the fixed iron core and closing the mover core by its elastic restoring force when current is interrupted to the input side coil and the open side coil at the time when the mover core moves to the second position. An opening spring holding in position.

Manipulator according to another aspect of the present invention, a fixed iron core made of a magnetic body; A stator coil wound in the form of a through-path in a vertical direction at the center thereof and disposed inside the fixed iron core to be fixed, and forming an electromagnetic circuit in a forward or reverse direction by applying a forward or reverse current; A mover core inserted into the through passage of the stator coil in a axially movable state and moving to a first position or a second position by a magnetic field generated by a forward or reverse excitation of the stator coil; A permanent magnet installed inside the fixed iron core and holding the movable core in the first position by its own magnetic force when the stator coil cuts current at the time when the movable core moves to the first position; And a force interposed between the mover core and the fixed iron core to push the mover core to a second position, and to cut off current to the stator coil at the time the mover core moves to the second position. And an opening spring for holding the mover core in the second position by the elastic restoring force.

The manipulator of the present invention, even when the mover core blocks the current supplied to the coil at the time when the mover core is moved to the first position, the mover core is held by the magnetic force of the permanent magnet and moved to the first position. Keep up. Further, even when the mover core cuts off the current supplied to the coil at the time when the mover core is moved to the second position, the mover core continues to be moved to the second position by the elastic restoring force of the opening spring.

In the actuator of the present invention described above, the input side coil and the open side coil may be disposed adjacent to each other in the axial direction of the mover core.

Alternatively, any one of the input side coil and the open side coil may be wound in the radially inner side, and the other may be configured in the form wound around the outer circumference of the coil wound in the radially inner side.

In the manipulator of the present invention described above, the mover core is preferably attached with a connecting member for connecting to another driven element, while an open spring is interposed between the connecting member and the fixed iron core.

In the manipulator of the present invention described above, the permanent magnet is preferably installed in a state facing the end face of the mover core in the axial direction.

According to one aspect of the present invention, a drive device includes a driven element for performing a separate work by reciprocating to a first position and a second position under the operation of an actuator core of an manipulator.

Driving device according to another aspect of the invention, the case; The manipulator described above installed inside the case; A holder integrally coupled to the mover core of the manipulator inside the case and moving to the first position or the second position by the movement of the mover core; A plurality of movable contacts installed in the holder and having movable contacts formed at both ends thereof, respectively; And a power supply terminal and a load side terminal, each of which has fixed contacts corresponding to both movable contacts of the movable contact and is installed on both sides of the case, wherein the movable contact is moved to the first position or the second by the movement of the movable core. When the movable contact and the fixed contact are operated in the contact closing state or the contact opening state by moving to the position, and the current is interrupted to the coil of the manipulator when the mover core is completed moving to the first position or the second position, the movable contact The magnetic core is restrained in the first position or the second position by a permanent magnet or an open spring so that the movable contact and the fixed contact maintain the contact closing state or the open contact state.

The manipulator and the driving device of the present invention operate by the electromagnetic force of the current excited to the coil at the time of closing and opening, and after the operation is completed, the operation is completed by the magnetic force of the permanent magnet and the force of the open spring without supplying a current. Can be maintained continuously, it is possible to realize an excellent manipulator and driving device that can prevent the waste of power.

Further, according to the present invention, since there is no need to continuously supply current to the coil after the operation is completed, there is no fear that heat is generated in the coil, and the temperature of the fixed iron core is not increased by the heat. Therefore, there is no reduction of electromagnetic force and the connection state of the contact can be maintained stably.

In addition, according to the present invention, since the supply of current is not necessary in the open or closed state, the conventional problem that an unexpected accident occurs on the load side cannot occur due to a problem such as the sudden supply of current to the coil.

Further, according to the present invention, unlike the known EMFA, since the coil is fixed and the mover is made of only the iron core, the mover can be made of a single body with a single material, and a separate molding for integrating the coil and the iron core is conventionally provided. Since it is not necessary, it is possible to implement a manipulator and a drive device which are simple in structure, low in manufacturing cost, and which are electrically and mechanically stable.

In addition, according to the present invention, since the mover is made of only the iron core and the coil is fixed, there is no need to supply current to the mover, only the current is supplied to the stator coil, so there is no need to worry about current supply methods such as wiring. It is possible to implement a stable manipulator and driving device electrically and mechanically.

In addition, when the coil is composed of an input coil and an open coil as in the present invention, the operation force can be easily changed without any structural change by only changing the number of turns of each coil in response to the applied capacity or the strength of the force required at the time of input and opening. You can change it.

1 is a perspective view of a manipulator according to a first embodiment of the present invention.
2 is a cross-sectional view of the manipulator according to the first embodiment of the present invention.
3 is a view showing a state in which the mover moves to the first position (injection direction) in the manipulator according to the first embodiment of the present invention.
4 is a simulation result diagram of the magnetic flux flow in FIG. 3.
5 is a view showing a state in which the mover moves to the second position (open direction) in the manipulator according to the first embodiment of the present invention.
FIG. 6 is a diagram illustrating a simulation result of the magnetic flux flow in FIG. 5.
7 is a perspective view showing an example of an electromagnetic contactor as a driving apparatus according to the first embodiment of the present invention.
FIG. 8 is a view illustrating a manipulator and a movable holder assembly installed inside the electromagnetic contactor of FIG. 7.
FIG. 9 is a cross-sectional view taken along the line I-I of FIG. 7 and showing a state in which the driving device is opened (OFF).
FIG. 10 is a sectional view taken along the line II-II of FIG. 7, showing a state in which the driving device is opened.
FIG. 11 is a view illustrating a state in which the magnetic contactor is turned ON in FIG. 10.
12 is a perspective view of an electromagnet manipulator according to a second embodiment of the present invention.
13 is a cross-sectional view of an electromagnet manipulator according to a second embodiment of the present invention.
FIG. 14 is a view showing a state in which the mover moves to the first position (injection position) in FIG. 13.
FIG. 15 is a view showing a state in which the mover moves to the second position (open position) in FIG. 13.
16 is a cross-sectional view of a manipulator according to a third embodiment of the present invention.
17 is a view showing the structure of a conventional manipulator and a drive device having the same.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The direction defined in the following description and claims and drawings, i.e., 'upward', 'downward', 'left', 'right', 'forward' and 'rear' is for convenience of description of the device. It is arbitrarily set in order to make it easy to understand, and these directions are not an absolute direction but can change according to installation conditions. For example, when the manipulator or driving device (eg, electromagnetic contactor, etc.) is laid down, the above directions are changed accordingly.

(First Embodiment of Operator)

1 to 6 are diagrams for explaining the manipulator according to the first embodiment of the present invention. In the following description, the opening position (first position) and the opening position (second position) are described as positions arbitrarily set to distinguish two directions or positions in which the movable element moves for convenience of understanding. , The first position does not necessarily refer to the closing position, while the closing position does not necessarily refer to the position of closing the 'electrical circuit', and the second position does not necessarily refer to the opening position. It does not necessarily refer to the position of opening the 'electric circuit'.

First, as shown in FIGS. 1 and 2, the manipulator 1000a according to the present invention includes a fixed iron core 1100, an input side coil 1210, an open side coil 1220, and a mover core 1300. It includes a permanent magnet 1400 and the opening spring 1500.

The fixed iron core 1100 is made of a magnetic material to facilitate the flow of magnetic flux to constitute an outer portion of the manipulator.

The input side coil 1210 and the open side coil 1220 are wound in the form of the up-and-down direction through-hole 1200 in the center thereof and are disposed inside the fixed iron core 1100.

As shown in FIG. 2, the input side coil 1210 and the open side coil 1220 may be configured to be wound around the outer periphery of the bobbin 1230, and at this time, the through passage 1200 may have a bobbin 1230. Becomes the inner diameter part of. Alternatively, it is possible to use one wound in the shape of a closed curve by a known self-bonding type that can maintain a shape only by the coil itself without using the bobbin 1230. At this time, the through passage 1200 becomes an inner diameter portion of the input side coil 1210 and the open side coil 1220.

In addition, in FIG. 1, the input side coil 1210 and the open side coil 1220 are wound in a circular closed curve shape in plan view, but are not limited thereto, and may be variously configured in a rectangular closed curve shape. Can be.

The input side coil 1210 and the open side coil 1220 form electromagnetic circuits in opposite directions independent of each other by application of independent currents. To this end, the input side coil 1210 and the open side coil 1220 are wound in opposite directions to each other. In this embodiment, the input side coil 1210 and the open side coil 1220 are arranged adjacent to each other in the axial direction.

The mover core 1300 is made of a magnetic material and axially, that is, downward (injection direction) and in the center through-hole 1200 formed by the input coil 1210 and the open coil 1220. It is arrange | positioned in the state which can move upward (open direction).

The mover core 1300 is magnetized by a magnetic field generated by applying a current to the input side coil 1210, and is placed in an input position (in the input direction or downward in the drawing) according to the principle of an electromagnet according to Fleming's right hand law. Is referred to as 'first position'. On the contrary, when the current is applied to the open side coil 1220, the mover core 1300 is moved to the open position (the injection direction or upward in the drawing, which is referred to as the 'second position').

Next, the permanent magnet 1400 provides a magnetic force that pulls the mover core 1300 to the first position. The permanent magnet 1400 restrains the mover core 1300 to the first position even when the mover core 1300 is in the first position, even if no current is applied to the input side coil 1210.

When the permanent magnet 1400 is installed to face the axial end surface of the mover core 1300, it facilitates the action of the magnetic force on the mover core 1300 and does not increase the volume of the manipulator much. No.

The open spring 1500 is interposed between the mover core 1300 and the fixed iron core 1100 to provide a force to push the mover core 1300 to a second position (upper view). The opening spring 1500 serves to continuously support the mover core 1300 at the second position even when no current is applied to the open side coil 1220 when the mover core 1300 is at the second position. do.

On the other hand, the mover core 1300 is connected to a separate driven element serves to operate the driven element in the first position and the second position.

In order to easily connect the mover core 1300 to the driven element, and to facilitate the installation of the opening 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 case, the opening spring 1500 is interposed between the connecting member 1310 and the fixed iron core 1100. The connection member 1310 is not limited to the form shown in the drawings, it can be freely configured in a form suitable for the characteristics or structure of the driven element, the support of the opening spring (1500).

The operation process for the manipulator of the present invention made as described above will be described in detail with reference to FIGS. 2 to 6.

2 is a state where the mover core 1300 is moved upward, that is, to a second position (open position). At this time, no current is applied to either the input side coil 1210 and the open side coil 1220, and thus no electromagnetic force acts on the mover core 1300.

Thus, the mover core 1300 is simply supported by the elastic force of the opening spring 1500 and is continuously maintained in the second position.

As shown in FIG. 2, in order to move the mover core 1300 to the first position (injection position) while the mover core 1300 is located in the second position (open position), a current is applied to the input side coil 1210.

When a current is applied to the input-side coil 1210, a magnetic field is formed in the input-side coil 1210, whereby the mover core 1300 is moved to the first position (the input direction by the principle of an electromagnet following Fleming's right hand rule). Is drawn).

In this way, when pulling the mover core 1300 to the lower first position, the pulling force of the mover core 1300 should be greater than the elastic force of the opening spring 1500, so that the input side coil 1210 The number of turns and current should be set to a suitable size in advance.

When the current is applied to the input side coil 1210 to pull the mover core 1300 downward, as shown in FIG. 3, the open spring 1500 is compressed and the mover core 1300 is a permanent magnet 1400. Will be in a close state.

As shown in FIG. 3, the magnetic flux flow immediately before the mover core 1300 moves to the first position and the closing operation is completed is in the same state as in FIG. 4.

On the other hand, as shown in Figure 4, when the magnetic flux flow direction of the electromagnet by the input side coil 1210 and the magnetic flux flow direction by the permanent magnet 1400 formed in the same direction, the force to pull the movable core 1300 You can increase it.

In this manner, when the mover core 1300 reaches the closing position, the current applied to the closing side coil 1210 is cut off. Then, the magnetic field by the input side coil 1210 disappears, and the function of the electromagnet that has been applied to the mover core 1300 also disappears. Therefore, from this time on, the mover core 1300 is restrained in the input position by the magnetic force by the permanent magnet 1400. That is, even after the mover core 1300 moves to the first position, the mover core 1300 is held in the first position by the magnetic force of the permanent magnet 1400 even if no current is supplied to the input side coil 1210. Keep it as it is.

In a state where the mover core 1300 is located at the first position (injection position), a current is applied to the open side coil 1220 to move the mover core 1300 to the second position (open position).

When a current is applied to the open side coil 1220, a magnetic field is formed in the opposite direction of FIGS. 3 and 4 to push the mover core 1300 to the second position (open direction). The mover core 1300 moves to the second position by a magnetic field caused by the excitation of the open side coil 1220 and the elastic force of the open spring 1500, thereby bringing the state as shown in FIG.

As shown in FIG. 5, the magnetic flux flow immediately before the mover core 1300 moves to the second position and the opening operation is completed is as shown in FIG. 6.

In this manner, when the mover core 1300 reaches the open completion position, the current applied to the open side coil 1220 is cut off. Then, the magnetic field by the open side coil 1220 disappears, and the function of the electromagnet that has been given to the mover core 1300 also disappears. Therefore, from this time, the mover core 1300 is supported only by the elastic force of the opening spring 1500 and is constrained in the open position. That is, even after the mover core 1300 moves to the second position, even if no current is supplied to the open side coil 1220, the mover core 1300 is held in the second position by the elastic force of the open spring 1500. Keep it as it is.

The manipulator of the present invention thus constructed is operated by an electromagnetic force caused by currents excited by the input side coil 1210 and the open side coil 1220, which are fixedly arranged inside the fixed iron core 1110 at the time of closing and opening. After the operation is completed, even when no current is supplied to the coils 1210 and 1220, the state of the operation completed in the input or open position may be continuously maintained by the magnetic force of the permanent magnet 1400 or the elastic force of the opening spring 1500. As a result, a very economical manipulator is realized because no power is required.

In addition, according to the manipulator of the present invention, since the current need not be supplied to the coils 1210 and 1220 after the operation is completed, there is no fear that heat is generated in the coils 1210 and 1220. Therefore, there is no room for the temperature of the fixed iron core 1110 and the mover core 1300 to rise, and there is no decrease in the electromagnetic force, and thus the completed operation can be stably maintained.

In addition, according to the manipulator of the present invention, since the supply of current is not necessary in the open or closed position, an unexpected accident occurs on the load side due to a problem such as a sudden interruption of the current supplied to the coils 1210 and 1220. The same conventional problem cannot arise and can provide an electrically stable manipulator.

In addition, according to the manipulator of the present invention, since the mover core 1300 is made of an iron core, it is not necessary to supply a current to the moving mover core 1300 and only the coils 1210 and 1220 which are fixed to move. Since it is supplied, the current supply is easy and the electric and mechanically stable manipulator is implemented.

Further, according to the manipulator of the present invention, since the input side coil 1210 and the open side coil 1220 are provided separately, the operation force can be easily changed in accordance with the applied capacity, the strength of the force required at the input and the opening, and the like. have. For example, when the ratio of the force is different or the distribution of the force between the permanent magnet 1400 and the opening spring 1500 is adjusted according to the operation direction of the mover core 1300, the input side coil 1210 and Since the wire diameter, the number of turns, and the like of the open side coil 1220 can be configured differently, it can be configured in a form most suitable for the characteristics of the applied device, and can be widely applied to various devices.

(drive)

Hereinafter, an embodiment of a driving apparatus including the manipulator 1000a according to the present invention will be described. In the present specification and the drawings, the electromagnetic contactor is described as an example as a driving device. However, the present invention can be similarly applied to driving devices such as an electromagnetic switch and a circuit breaker. In the following description, the term "electronic contactor" refers to a "drive device."

7 to 11 show an electronic contactor according to the present invention.

As shown in FIG. 7, the electromagnetic contactor 100 forms an appearance by combining the lower case 111 and the upper case 112. A plurality of power supply side terminals 171 (see FIG. 10) and a load side terminal 172 are partially exposed in the front and rear directions of the upper case 112. The holder 151 of the movable contact assembly is exposed on the upper surface of the upper case 112.

As shown in FIGS. 8 to 10, the movable contact assembly 150 is coupled to an upper portion of the manipulator 1000a installed in the cases 111 and 112 (see FIG. 7).

The mover core 1300 is integrally coupled to the holder 151 of the movable contact assembly 150 via its connecting member 1310. Thus, the movable contact assembly 150 linearly moves up and down with the mover core 1300.

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.

As shown in FIG. 10, 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 fixed iron core 1100 of the manipulator 1000a is installed at the bottom of the lower case 111.

As shown in FIGS. 9 and 10, when the mover core 1300 of the manipulator 1000a is operated to the upper second position, the movable contact assembly 150 of the electromagnetic contactor 100 is also moved upward to move the electromagnetic contactor. 100 is in an open state (OFF state), and at this time, the contacts 161 and 162 of the movable contact 160 are separated from the contacts 181 and 182 of the terminals 171 and 172 so that they are supplied to the load side. Power is cut off.

When a current is applied to the open side coil 1220 of the manipulator 1000a, the mover core 1300 is pushed to an upper second position by an electromagnetic force by the open side coil 1220 and an elastic force of the open spring 1500. Going up In the position where the mover core 1300 has moved upward to the end (second position: open position), when the current applied to the open side coil 1220 is cut off, the mover core 1300 of the open spring 1500 It is supported and held in the open position (second position) only by the elastic force.

When the mover core 1300 moves upward and is held in the open completion position as described above, the holder 151 integrally coupled to the mover core 1300 is also maintained upward, and thus the contact 161 of 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.

As shown in FIG. 11, when the mover core 1300 of the manipulator 1000a is operated to a lower first position, the movable contact assembly 150 of the electromagnetic contactor 100 is moved downward to move the electromagnetic contactor 100. Becomes an input state (ON state), and 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 1210 of the manipulator 1000a, the mover element 1300 is pulled downward while overcoming the elastic force of the opening spring 1500. When the mover core 1300 moves downward to the end (first position: closing position), when the current applied to the closing side coil 1210 is interrupted, the stator core 1300 is a magnetic force of the permanent magnet 1400 It is held in the feeding position by

When the mover core 1300 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.

(Second Embodiment of the Operator)

12 to 15 illustrate a manipulator 1000b according to a second embodiment of the present invention.

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

That is, in the manipulator 1000a according to the first embodiment, the input side coil 1210 and the open side coil 1220 are divided into two in the vertical direction. In the manipulator 1000 b according to the present embodiment, only one stator coil 1250 is provided.

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. The through passage 1252 is substantially the same as the through passage 1200 according to the first embodiment.

This embodiment has one stator coil 1250 and one stator coil 1250 in the forward direction compared to the first embodiment having two coils according to the operation direction of the mover core 1300. Alternatively, the magnetic core 1300 is moved to the first position or the second position by applying a reverse current to form a flow of magnetic flux in a forward or reverse direction.

As in the first embodiment, the stator coil 1250 may be configured to be wound around the bobbin 1254, in which case 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.

14 and 15 show a state in which the mover core 1300 moves to the lower side (first position) and the upper side (second position) in the manipulator 1000b according to the present embodiment.

In FIG. 14, when a forward 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.

In the state where the mover core 1300 is located in the first position as shown in FIG. 14, when the reverse current is applied to the stator coil 1250, the mover core 1300 is pulled upward, that is, the second position. It is in the same state as 15.

As shown in FIG. 15, when the current applied to the stator coil 1250 is interrupted at the position (second position) in which the mover core 1300 moves upward to the end, the magnetic field caused by the stator coil 1250 disappears, and the movable portion The magnetic 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 driving device using the manipulator 1000b may be installed in place of the manipulator 1000a according to the first embodiment in the driving device 100 described with reference to FIGS. 8 to 11. Since the operation relationship of the drive device using the manipulator 1000b according to the present embodiment is basically the same as the operation relationship of the drive device 100 using the manipulator 1000a according to the first embodiment, detailed illustration and description thereof will be omitted. However, only the driving relationship of the mover core 1300 is different, but this has been described by the configuration and operation description of the manipulator 1000b according to the second embodiment.

(Third Embodiment of the Operator)

16, the manipulator 1000c according to the third embodiment of the present invention is shown.

The manipulator 1000c according to the present embodiment differs from the manipulator 1000a according to the first embodiment only in the form of the coil and the rest of the configuration is the same.

That is, in the manipulator 1000a according to the first embodiment, the input side coil 1210 and the open side coil 1220 are divided into two in the vertical direction (axial direction). In the manipulator 1000c according to the present embodiment, any one of the input coil 1211 and the open coil 1221 is wound in the radially inner side, and the other coil is wound in the radially outer side. Demonstrate the variety of arrangements required.

In FIG. 16, the input side coil 1211 is arrange | positioned inside radial direction, and the open side coil 1221 is comprised by the form wound around the outer periphery of the input side coil 1211. In this case, the input side coil 1211 is wound in the form of the through passage 1201 in the center, and the mover core 1300 is disposed in the through passage 1201 in an axially movable state. The through passage 1201 is substantially the same as the through passage 1200 according to the first embodiment.

The positions of the input side coil 1211 and the open side coil 1221 may be interchanged with each other depending on the characteristics of the electromagnetic contactor (drive device) to which the manipulator is to be applied.

In this embodiment, the current is selectively applied to the input side coil 1211 and the open side coil 1221 according to the operation direction of the mover core 1300 to move the mover core 1300 in the first position or the first position. Move to position 2.

Like the first embodiment, the input side coil 1211 and the open side coil 1221 may be configured to be wound around the bobbin 1231, in which case the passageway 1201 has an inner diameter portion of the bobbin 1231. do. Alternatively, it is a known self-bonding type that can maintain a shape only by the coil itself without using the bobbin 1231. It can be used that is wound in a closed curve shape. At this time, the through passage 1201 becomes the inner diameter portion of the input side coil 1211.

The operation process of the manipulator 1000c according to the present embodiment, and the operation and action of the driving apparatus including the manipulator 1000c according to the present embodiment, is the operation process of the manipulator 1000a and the driving apparatus 100 of the first embodiment. Since it is the same as the detailed description thereof will be omitted.

As described above, according to the manipulator of the present invention, the current flows to the coil only during the ON and OFF operations, and after completion of the operation, the magnetic force of the permanent magnet and the opening spring are not required. A manipulator and a drive device are implemented that can continuously maintain the completed state by force.

In addition, the structure and shape is simple and easy to manufacture compared to the existing manipulator, and the manipulator and the drive device which is very stable electrical and mechanical.

Therefore, when the electromagnetic contactor according to the present invention is applied to all industrial fields, power waste can be greatly reduced, and a more reliable driving device can be realized.

In the accompanying drawings and the description above, only one electromagnetic contactor MC has been described as an example of the driving device. However, the manipulator of the present invention uses the same method as the electromagnetic contactor described above, and the electromagnetic switch MS, the general circuit breaker CB, The circuit breaker (ELB or ELCB), wiring breaker (MCCB or NFB), motor protection wiring breaker (MMS) and the like can be utilized in many mechanical devices and measuring devices.

In the above, specific embodiments of the present invention shown in the accompanying drawings have been described in detail, but these are merely illustrative of the preferred embodiments of the present invention, and the scope of protection of the present invention is not limited thereto. In addition, the embodiments of the present invention as described above can be variously modified and equivalent other embodiments by those of ordinary skill in the art within the technical spirit of the present invention, such modifications and equivalent other embodiments are naturally It belongs to the appended claims of the present invention.

100: electronic contactor 111: lower case
112: upper case 150: movable contact assembly
151: holder 160: movable contact
161, 162: movable contact 163: spring
171: power supply terminal 172: load side terminal
181, 182: fixed contact 1000a, 1000b, 1000c: manipulator
1100: fixed iron core 1200, 1201, 1252: through passage
1210, 1211: Input side coil 1220, 1221: Open side coil
1230, 1231, 1254: bobbin 1250: stator coil
1300: mover core 1310: connecting member
1400: permanent magnet 1500: opening spring

Claims (9)

A fixed iron core 1100 formed of a magnetic material;
An inlet-side coil wound in the form of a through-path in a vertical direction at the center thereof, disposed and fixed inside the fixed iron core 1100, and forming electromagnetic circuits of opposite directions independent of each other by application of independent currents. And an open side coil;
It is inserted into the penetration path of the input side coil and the open side coil in a axially movable state, and moves to the first position or the second position by a magnetic field generated by the excitation of the input side coil or the open side coil. Ruler core 1300;
It is installed inside the fixed iron core 1100, the mover core 1300 by its own magnetic force when the current is interrupted to the input side coil and the open side coil when the mover core 1300 moves to the first position A permanent magnet (1400) for holding the first position; And
It is interposed between the mover core 1300 and the fixed iron core 1100, and its elastic restoring force when the current is interrupted to the input side coil and the open side coil when the mover core 1300 moves to the second position. And an opening spring (1500) for holding the mover core (1300) in a second position.
The method of claim 1,
And the input side coil and the open side coil are disposed adjacent to each other in the axial direction of the mover core (1300).
The method of claim 1,
Wherein either one of the input side coil and the open side coil is wound on the radially inner side, and the other is wound on the outer circumference of the coil wound on the radially inner side.
The method of claim 1,
The permanent magnet (1400), the manipulator, characterized in that installed on the inner surface of the fixed iron core in the state facing the axial end surface of the mover core (1300).
A fixed iron core 1100 formed of a magnetic material;
Stator coil 1250 wound in the form of a vertically formed through-path in the center and disposed inside the fixed iron core 1100 to be fixed, and forming an electromagnetic circuit in a forward or reverse direction by applying a forward or reverse current. ;
It is inserted into the through passage of the stator coil 1250 in the axially movable state, and movable to the first position or the second position by a magnetic field generated by the forward or reverse excitation of the stator coil 1250 Ruler core 1300;
Is installed inside the fixed iron core 1100, when the mover core 1300 is moved to the first position when the current is cut off to the stator coil by the magnetic force of the mover core 1300 by its own position A permanent magnet 1400 holding on; And
Interposed between the mover core 1300 and the fixed iron core 1100 to provide a force for pushing the mover core 1300 to a second position, and the mover core 1300 moves to the second position. And an opening spring (1500) for holding the mover core (1300) in a second position by its elastic restoring force when the current is interrupted in the stator coil.
The method of claim 5,
The permanent magnet (1400), the manipulator, characterized in that installed on the inner surface of the fixed iron core in the state facing the axial end surface of the mover core (1300).
The method according to claim 1 or 5,
The mover core 1300 is attached with a connecting member 1310 for connecting to another driven element, and the opening spring 1500 is interposed between the connecting member 1310 and the fixed iron core 1100. Manipulator.
A drive device requiring an operation of moving to a first position and a second position opposite to the first position,
A manipulator according to any one of claims 1 to 6,
And a driven element configured to perform a separate work by reciprocating to a first position and a second position in response to an operation of the mover core (1300) of the manipulator.
case;
A manipulator according to any one of claims 1 to 6 installed inside the case;
A holder 151 integrally coupled to the mover core 1300 of the manipulator in the case and moving to the first position or the second position by the mover of the mover core 1300;
A plurality of movable contacts 160 installed in the holder 151 and having movable contacts 161 and 162 formed at both ends thereof, respectively; And
Fixed contacts 181 and 182 corresponding to both side movable contacts 161 and 162 of the movable contact 160 are formed to include a power supply terminal 171 and a load side terminal 172 respectively installed on both sides of the case. ,
By moving the movable core 1300, the movable contact 160 moves to the first position or the second position, whereby the movable contacts 161 and 162 and the fixed contacts 181 and 182 are in contact contact state or Operated in the contact open state,
When the mover core 1300 cuts the current to the coil of the manipulator when the mover core 1300 is moved to the first position or the second position, the mover core 1300 is formed by the permanent magnet 1400 or the opening spring 1500. And the movable contact (161, 162) and the fixed contact (181, 182) are constrained in the position or the second position to continuously maintain the contact closing state or the open contact state.

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