KR101376548B1 - Electric power switch - Google Patents

Abstract

The present invention relates to an electric power switch. The electric power switch includes: a stator (200) which is combined with a main body (100) and has a metal pin core (700) with a coil winding on; a mover (300) which is guided by a guider of the main body, and ascends and descends along the stator due to the elastic force of a restoring elastic spring (400); a movable contact point (340) which is included in the mover in order to be moved with the mover; a stationary contact point (240) which is fixated in the main body, enables power to be inputted or to stop being inputted to a load, and is positioned to be in contact with or be separated from the movable contact point; and a permanent magnet (600) which is combined with the mover, compresses a restoring spring (530) with a guide means (500) and move to be in contact with the metal pin core while keeping the movable contact point in contact with the stationary contact point when an electromagnetic circuit of the metal pin core (700) is generated, and moves to a position of an initial state with the restoring force of the restoring spring when another electromagnetic circuit is generated. In a state where power is not supplied to an input side coil of the metal pin core forming the stator, the permanent magnet is not connected to the metal pin core even when the mover is mistakenly operated by a user.Therefore, the electric switch enables a manager to safely operate.

Description

Power switch {ELECTRIC POWER SWITCH}

The present invention relates to a power switch, and more particularly, when determining whether there is an error before turning on the power switch, the operator can easily determine whether there is an error through a simple operation and at the same time, a stable contact can be easily assembled. To a power switch.

Typically, the power switch is a device that opens (blocks) or inputs (connects) main power supplied to a load in a power system, and may include an electromagnetic contactor, an electronic switch, and the like.

The magnetic contactor (MC) is used to open and close a power supply circuit connected to a driving circuit such as a motor, and is usually an electronic switch with an overload relay. MS (Magnetic Switch) is configured.

The electromagnetic contactor is a kind of an electromagnetic relay having a large contact capacity and a breakdown voltage, and is mainly used for controlling the opening and closing of a large current or starting or stopping of a motor by using an electromagnetic force to open and close the contact.

Looking at the Republic of Korea Patent Registration No. 10-0968462 (manipulator using a permanent magnet and a drive device having the same),

The mover is moved by using the magnetic force of the permanent magnet and the electromagnetic force caused by the current excited by the coil, and when the movement is completed, the state is continuously maintained by the magnetic force of the permanent magnet or the force of the open spring without supplying a separate control current. A power switch is disclosed.

That is, in such a power switching device, when a control current is applied to the input side coil, the movable element including the permanent magnet is pulled by the fixed iron core, and the main contact side and the main load side are energized by attaching the movable contact to the fixed contact point. Even if the control current is blocked after completion of the input, the input state is continuously maintained by the manpower acting between the fixed core and the permanent magnet.

In addition, when a control current is applied to the open side coil, the mover element including the permanent magnet leaves the fixed core core, and the movable contact is separated from the fixed contact, and the main power supply side and the main load side are disconnected. Even after the control current is cut off, the open state is maintained continuously by the elastic force of the open spring.

Such a power switching device flows a control current to the coil only during the ON or OFF operation, and opens the state with the permanent magnet even if the mover does not supply the control current to the coil when it reaches the input or open position. As the spring is kept constant, there is a big advantage that no power is required after the operation is completed.

However, it is difficult to check whether the permanent magnet is in the open state or the open state in the initial state before supplying the control current to the coil.

For example, pressing the outwardly protruding holder with a force greater than the elastic force of the opening spring causes the holder and the mover element to descend, thereby narrowing the gap between the permanent magnet and the fixed core core. If the holder is lowered further and the permanent magnet is closer to the fixed core core, the magnetic force proportional to the square of the distance between the permanent magnet and the fixed core core exceeds the restoring force of the open spring, which causes the permanent magnet to be pulled into the fixed core core. The contact is inadvertently introduced by being stuck. Therefore, it is possible to maximize the utility of the power switchgear by completely blocking any possibility that the contact point to be kept open due to an administrator's mistake or any external shock or vibration, or any malfunction that may be malfunctioned in the input state.

On the other hand, the Republic of Korea Patent No. 10-1109099 has been proposed a power switch device having a malfunction prevention function.

This is because the manipulator operates in the open position and locks the holder and the mover of the movable contact assembly so that the main power is open and the control current is not applied to the coil, and the lock is automatically applied when the control current is applied to the manipulator for the main power input. By releasing it, it is possible to fundamentally eliminate any concerns about possible malfunctions.

An electric power switching device having the malfunction preventing function includes: a stator element including a fixed iron core core and a stator coil wound around an outer circumference of the fixed iron core core; A mover element having permanent magnets spaced apart from the upper part of the fixed iron core core and moving in an opening direction pulled toward the fixed iron core core and in an open direction away from the fixed iron core core; A manipulator including an opening spring elastically supporting said mover element in an open direction; A driven element to which the mover element is united; An electric power switching device including a magnetic path forming member installed on the stator element to form a magnetic flux flow path, the electric power switching device comprising: an interlock guide unitized with the movable element or driven element and moving in an input direction and an open direction; One side of the stator element is disposed adjacent to the magnetic path forming member, and when a control current is applied to the stator coil, the magnetic field generated by the magnetic path forming member is pulled toward the magnetic path forming member to release the moving path of the interlock guide. And an armature which moves to a position, and when the control current is interrupted by the input side coil so that the magnetic field of the magneto-forming member disappears, the magnetic field of the magneto-forming member is returned to a locked position away from the magneto-forming member to prevent the movement of the interlock guide.

As a result of the selective mechanical engagement of the interlock guides and armatures, unexpected external forces or inadvertent use may be expected when the mover element, movable contact assembly and holder are in the open position and the control current is interrupted by the closing coil. This prevents the holder and the mover element from being pressed and powered up.

Therefore, a problem that causes problems in the power system is prevented by randomly inputting a contact to be kept open due to an administrator's mistake or any external shock or vibration.

However, in the above case, the interlock guider and the armature must be separately installed in order to prevent the power from being turned on, resulting in a manufacturing cost as well as an inconvenience in assembly.

Republic of Korea Patent Publication No. 10-0968462 Announced July 08, 2010 Republic of Korea Patent Publication No. 10-1109099 2012-01-31 Notice

Accordingly, the present invention was made to solve the above problems,

SUMMARY OF THE INVENTION [0006]

When the core of the stator where the electromagnetic circuit is generated pulls the permanent magnet positioned on the mover, the permanent magnet of the mover is contacted through two spring spring force, so if it is abnormal, check repeatedly through the spring of one step. And the state of input is to provide a power switch that can be easily checked for abnormality and easy to assemble by allowing the contacts to be maintained through springs of 1,2 stages.

In addition, even if the mover is moved by a malfunction, the power is not turned on until the current by the electromagnetic circuit into the iron core core.

In addition, it is to facilitate the assembly by structural simplicity.

In order to achieve the above object,

The present invention

An electric power switch comprising: a stator coupled to a body and having a core core wound around a coil; A mover which is lifted and lifted through a holding force of an elastic spring for returning to the stator with a guide of a guider provided in the body; A movable contact provided on the mover to move with the mover; A fixed contact provided on the body, the fixed contact having a fixed state and allowing power to be input and opened to the load side, and the movable contact being positioned to be in contact with and detachable from the movable contact; When coupled to the mover and the electromagnetic circuit of the iron core core is generated, the restoring spring is moved through the guide means to be compressed to be in contact with the core core and at the same time the movable contact is maintained in contact with the fixed contact and another electromagnetic circuit It may be implemented to include a permanent magnet that moves to the initial state with the restoring force of the restoring spring when it occurs.

The guide means, the tray which is detachably coupled to one surface of the mover, the center is moved up and down through the tray vertically fixed in the form of one end is set in the center of the permanent magnet and the other end is provided with an elastic control plate The pin and the upper and lower ends surrounding the center pin may include a resilient spring supported by the elastic control plate and the tray.

The present invention has the effect that the manager can safely operate as the permanent magnet is not connected to the iron core core even when the power is not supplied to the input side coil of the iron core core constituting the stator even when the mover is operated by a user malfunction. .

In other words, the contact point to maintain the open state by the administrator's mistake or any external shock or vibration is randomly input, there is an effect that does not cause problems in the power system.

In addition, the permanent magnet is coupled to the mover side in a state in which the permanent magnet has its own restoring spring, so that the assembly is easy as well as the user's operation is easy.

1 is a cross-sectional view of main components of a power switch according to the present invention;
Fig. 2 is a side sectional view of Fig. 1,
3 is an exploded view of the main parts of FIGS. 1 and 2;
4 is an operational state diagram of a power switch according to the present invention, (a) is an initial state, (b) is an actuator pressed state, (c) is a state in which a permanent magnet is connected to an iron core core by an input coil, (d ) Is a cross-sectional view showing a state in which the permanent magnet is opened by the resilient force of the resilient spring and the restoring spring by the open side coil.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and in describing the present invention, setting the directions of lifting, upward, downward, left, right, front, and rear, etc. The purpose of this article is to make it easier for you to understand and understand. Therefore, the direction indicated in the specification is not an absolute direction but may be changed depending on the installation conditions. For example, when the power switch is laid down, the above directions are changed accordingly.

In addition, what is described as an input position and an open position is a position arbitrarily set in order to distinguish the two directions or positions which a mover moves for the convenience of understanding. Therefore, the input position does not necessarily refer to a position where the circuit is closed (closed position), nor does the open position indicate a position where the circuit is necessarily opened.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention. do.

The present invention relates to a power switch.

The present invention is the stator 200 is located in the lower body 120 in the body 100 constituting the power switch as shown in Figures 1 to 4, the body 100 is located in the upper body 140 A movable member 300, a return elastic spring 400 for allowing the movable member 300 to be returned to an initial state with respect to the stator 200, and guide means 500 provided to the movable member 300. The permanent magnet 600, which is positioned to be elevated and lowered, and the movable contact 340 of the mover 300 is pushed to the fixed contact 240 by pushing or pulling the permanent magnet 600 through an electromagnetic circuit when power is turned on. It consists of an iron core 700 to be connected or opened.

The body 100 is composed of an upper and lower body 120, 140, the upper body 120 is in close contact with the lower body 140 is coupled through a separate fastener.

The stator 200 is provided to the lower body 140 as is known, is located inside the lower body 140, the core core 700 is provided at the center thereof, the core core 700 The outer circumference of the coil 720 is wound around.

The iron core core 700 is made of a magnetic material, and may be formed in the shape of a column such as a solid circle or a square, as is known.

The coil 720 is provided to the iron core core 700, and divided into an input side coil 722 for connecting a power source and an open side coil 724 for opening a power source, and is magnetized by applying a current ( It plays the role of road.

That is, the input side coil 722 and the open side coil 724 are wound on the outer circumference of the iron core core 700 so as to be inward and outward with respect to the outside of the iron core core 700. The application of currents independent of each other constitutes electromagnetic circuits in opposite directions.

In more detail, when a current is applied to the input side coil 722, the magnetic flux flow of the iron core core 700 and the magnetic flux flow of the permanent magnet 600 are formed in the input direction, and the permanent magnet is operated by the attractive force. To draw the 600 to the input position, if the current is applied to the open side coil 724, the magnetic flux flow of the iron core core 700 and the magnetic flux flow of the permanent magnet 600 is formed to be opposite to each other, the repulsive force Lifting the permanent magnet 600 to the upper open position by the elastic restoring force of the restoring spring 530 included in the guide means 500 while lifting the action spring and the elastic spring 400 and the permanent magnet 600. To do that.

The mover 300 is provided to the upper body 120 as is known, and moves up and down relative to the lower body 140 or the stator 200, the bottom and the bottom of the mover 300 A return elastic spring 400 is coupled between the lower body 140 or the stator 200.

The return elastic spring 400 moves the mover 300 moved downward with respect to the body 100 to an initial state through an elastic force.

The fixed contact point 240 is positioned in the lower body 140 and is in contact with and detachable from the movable contact point 340 positioned in the mover 300 so that power can be turned on and off to the load side.

The movable contact 340 is located on the mover 300 side and is connected to the fixed contact 240 during the lowering operation of the mover 300.

The permanent magnet 600 is a magnetic force, it is possible to have a circular or polygonal appearance. And coupled to the mover 300 is raised and lowered to the guide of the guide means 500, which is the core technical means of the present invention when the electromagnetic circuit of the iron core core 700 occurs.

The guide means 500, the tray 520 is detachably coupled to one surface of the movable member 300, the tray 520 is vertically passed through the slide up and down and the lower end of the permanent magnet 600 The center pin 550 integrally formed with the center of the elastic control plate 540 and the upper and lower ends surrounding the center pin 550 and the elastic control plate 540 is fixedly or vertically coupled to the upper end of the center pin 550, the elastic control plate 540 and a restoring spring 530 supported by the tray 520.

The tray 520 is coupled via a fastener 522 to a position corresponding to the iron core core 700 of the stator 200 on one surface of the mover 300.

The fastener 522 is fixed in a state in which the tray 520 is located on the mover 300 in the form of a pin.

The center pin 550 may be solid or hollow, and a cross section may be implemented in a circular, square, or polygonal shape. And the center pin 550 is vertically passed through the tray 520 is coupled to be lifted, one end is fixed to the integral or detachable form in the form of standing in the center of the permanent magnet 600, the other end is elastic The control plate 540 is coupled to adjust the length.

That is, the elastic force of the restoring spring 530 may be adjusted according to the engagement section of the elastic control plate 540.

The restoring spring 530 wraps around the center pin 550 and the upper and lower ends of the restoration spring 530 are supported by the elastic control plate 540 and the tray 520 to the iron core core 700 in a descending state of the movable member 300. In the electromagnetic circuit operation of the input side coil 722 is compressed by the permanent magnet 600.

Accordingly, when the power supply of the input side coil 722 to the iron core core 700 is moved, the permanent magnet 600 is moved downward, the elastic control plate 540 connected to the permanent magnet 600 is restored spring 530 The permanent magnet 600 is brought into contact with the iron core 700 by being compressed downward. At this time, the movable member 300 is moved downward with respect to the stator 200 by compressing the return elastic spring 400 so that the movable contact 340 and the fixed contact 240 are in contact with each other and maintained in a connected state. do.

Here, the restoring spring 530 has an elastic modulus capable of returning the permanent magnet 600 to an initial state when the electromagnetic circuit of the open side coil 724 is operated to the iron core core 700.

The assembly and operation of the power switch according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

In assembly, as shown in FIGS. 1 and 3, the iron core core 700 forming the stator 200 is coupled to the lower body 140, and includes a movable contact 340 in the upper body 120. To couple the mover 300, the permanent magnet 600 is coupled to the bottom surface of the mover 300 through the guide means 500 to have a holding force of the restoring spring 530. Then, when the upper body 120 is coupled to the lower body 140 through fasteners, the assembly is completed as shown in FIGS. 1 and 2.

In this state, if you want to check whether the power is turned on and repeatedly pressing the mover 300 protruding from the upper body 120. Then, the movable member 300 is repeatedly moved up and down continuously through the elastic force of the returning elastic spring 400. At this time, the permanent magnet 600 as shown in Figure 4a and 4b the movable member 300 Will be moved with).

Then, the permanent magnet 600 is moved to the iron core core 700 through the magnetic force, at which time, the restoring spring 530 constituting the guide means 500 to support the elastic control plate 540 through its own elastic force By controlling the downward movement of the permanent magnet 600 to prevent the connection. Accordingly, even when the mover 300 is repeatedly pressed repeatedly, the power is not turned on and the state in which the mover 300 is not turned on can be confirmed.

Thereafter, when an electromagnetic circuit is connected to the input side coil 722 of the iron core core 700 constituting the stator 200 of the lower body 140 as shown in FIG. The magnet 600 is attached to the iron core core 700 through a magnetic force, and at the same time, the movable contact 340 is in contact with the fixed contact 240 to supply power to the load side.

Then, even when the electromagnetic circuit is turned off, the permanent magnet 600 can maintain the state in which the mover 300 is moved downward through its own magnetic force, so as to operate the open side coil 724 through the electromagnetic circuit separately. Previously, the contact state can be maintained.

Thereafter, when the current is supplied to the open side coil 724 of the iron core core 700, the iron core core 700 pushes the permanent magnet 600 as shown in FIG. 4D, and at the same time, the restoring spring. The mover 300 is moved to an initial state through an elastic force of the elastic force 530 and an elastic force of the returning elastic spring 400. In this case, the movable contact 340 is separated from the fixed contact 240 to supply power. Will block.

100: Body
120: upper body 140: lower body
200: stator
240: fixed contact
300: mover
340: movable contact
400: return spring
500: guide means
520: tray 522: fastener
530: restoring spring 540: elastic control plate
550: center pin
600: permanent magnet
700: iron core
720: coil
722: input side coil 724: open side coil

Claims (3)

delete Power switch,
A stator coupled to the body and having a core core wound with a coil; A mover which is lifted and lifted through a holding force of an elastic spring for returning to the stator with a guide of a guider provided in the body; A movable contact provided on the mover to move with the mover; A fixed contact provided on the body, the fixed contact having a fixed state and allowing power to be input and opened to the load side, and the movable contact being positioned to be in contact with and detachable from the movable contact; When coupled to the mover and the electromagnetic circuit of the iron core core is generated, the restoring spring is moved through the guide means to be compressed to be in contact with the core core and at the same time the movable contact is maintained in contact with the fixed contact and another electromagnetic circuit It comprises a permanent magnet that moves to the initial state with the restoring force of the restoring spring when it occurs;
Wherein the guide means comprises:
A tray detachably coupled to one surface of the mover;
A center pin vertically passing through the tray and having one end fixed to the center of the permanent magnet and having an elastic control plate at the other end thereof;
The power switch is wrapped around the center pin, the upper and lower ends comprising a restoring spring supported by the elastic control plate and the tray.
3. The method of claim 2,
The elastic control plate, the power switch characterized in that the adjustable height coupled to the center pin to adjust the elastic force of the restoring spring.

Images