KR102600711B1 - Operation part of 1-axis automatic transfer switch using inertia - Google Patents

Abstract

The present invention relates to an automatic transfer switch, and more specifically, to a control unit of a single-axis automatic transfer switch using inertia.
The purpose of the present invention is to provide a 1-axis automatic transfer switch having a control unit using inertia that can be rotated in a simple structure using inertia when the mover rotates in the first power, second power, or off state.
In the present invention, current flows into the actuator to rotate the cam through the link, and when the rotating cam rotates at a preset angle and the protruding end of the cam operates a switch that blocks current from flowing into the actuator, the cam rotates due to inertia. A simple structure that completes rotation in the direction in which it is rotating can have the effect of lowering the failure rate and making maintenance convenient.

Description

Operating part of 1-axis automatic transfer switch using inertia {OPERATION PART OF 1-AXIS AUTOMATIC TRANSFER SWITCH USING INERTIA}

The present invention relates to an automatic transfer switch, and more specifically, to a control unit of a single-axis automatic transfer switch using inertia.

Generally, an automatic transfer switch connects commercial power supplied from a power source such as Korea Electric Power Corporation to an emergency generator, and when commercial power is cut off or an unstable situation occurs, the automatic transfer switch switches to the emergency generator to stably supply power to the load.

The automatic transfer switch consists of an energizing part for switching between commercial power and emergency power and an operating part that generates and drives magnetic force. The energizing part consists of a stator that is electrically connected to commercial power and emergency power, respectively, and a mover that travels back and forth between the two faults and is electrically connected to the load. Then, the rotary force generated from the operating unit is transmitted to rotate the mover of the energizing unit.

However, the conventional 1-axis automatic transfer switch has a complicated structure in order to transmit rotational force from the operating part to rotate the mover. Therefore, if even one of the components is misaligned, defective, or malfunctions, problems occur in rotating the mover. Alternatively, there is a problem that maintenance is difficult.

1. Korean Patent Publication No. 10-1788654 (registration date 2017.10.16.)

The present invention is intended to solve the above problems, and provides a control unit of a 1-axis automatic transfer switch using inertia that can be rotated with a simple structure using inertia when the mover rotates in the first power, second power, or off state. The purpose is to

The object to be achieved by the present invention is not limited to the object mentioned above, and other objects not mentioned can be clearly understood by those skilled in the art from the description below.

In order to achieve the above object, the operation unit of the single-axis automatic transfer switch using inertia according to a preferred embodiment of the present invention has a space formed inside by the operation unit cover, and the operation unit has spring fixing holes formed on both side walls, respectively. A case, an operation lever protruding outward of the operation unit cover, a first cam device provided on one side of the operation lever and rotated by the operation lever, fixedly coupled to the operation unit case, and subject to rotation of the first cam device a first switch assembly operated by a first cam device, a second cam device provided on one side of the first cam device and rotated by the operating lever, a second cam device provided symmetrically with the first cam device and rotating independently, and the operating unit fixed to the case. It is coupled and includes a second switch assembly that operates by rotation of the second cam device, and a shaft that rotates by the first cam device and the second cam device to rotate the mover rotator.

In addition, the first cam device is provided on one side of the operation lever, is formed in multiple stages and includes a second protruding end and a third protruding end, and is connected to the first cam to rotate the first cam. It is characterized in that it includes a first actuator and a first link whose one end is connected to the first cam and the other end is connected to the first actuator.

In addition, the first switch assembly includes at least two switches, a first switch that rotates in one direction and is operated by the second protruding end to block the current flowing into the first actuator, and a first switch that rotates in the other direction. Thus, it is characterized in that it includes a second switch that is operated by the third protruding end to block the current flowing into the first actuator.

In addition, the second cam device is provided on one side of the operation lever, is formed in multiple stages, is a second cam including a fifth protruding end and a sixth protruding end, and is connected to the second cam to rotate the second cam. It is characterized in that it includes a second actuator and a second link whose one end is connected to the second cam and the other end is connected to the second actuator.

In addition, the second switch assembly includes at least two switches, a third switch that rotates in one direction and is operated by the fifth protruding end to block the current flowing into the second actuator, and a third switch that rotates in the other direction. Thus, it is characterized in that it includes a fourth switch that is operated by the sixth protruding end to block the current flowing into the second actuator.

In the present invention, current flows into the actuator to rotate the cam through the link, and when the rotating cam rotates at a preset angle and the protruding end of the cam operates a switch that blocks current from flowing into the actuator, the cam rotates due to inertia. A simple structure that completes rotation in the direction in which it is rotating can have the effect of lowering the failure rate and making maintenance convenient.

Figure 1 is a perspective view of a single-axis automatic transfer switch according to the present invention.
Figure 2 is a side view of Figure 1.
Figure 3 is a cross-sectional view taken along line XX of Figure 2.
Figure 4 is an internal perspective view of the operating unit of Figure 1.
Figure 5 is a front view of Figure 4.
Figure 6 is a side view of Figure 4.
Figure 7 is a YY cross-sectional view of Figure 6.
Figure 8 is a perspective view of the cam of Figure 4.
Figure 9 is a perspective view of Figure 8 in another direction.
Figure 10 is a perspective view of the shaft of Figure 4.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

While describing each drawing, similar reference numerals are used for similar components. In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

Terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

For example, a first component may be referred to as a second component, and similarly, the second component may be referred to as a first component without departing from the scope of the present invention.

The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention.

Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains.

Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, the operating unit of a single-axis automatic transfer switch using inertia according to a preferred embodiment of the present invention will be described in detail with reference to the drawings. Figure 1 is a perspective view of a single-axis automatic transfer switch according to the present invention. Figure 2 is a side view of Figure 1. Figure 3 is a cross-sectional view taken along line X-X of Figure 2. Figure 4 is an internal perspective view of the operating unit of Figure 1. Figure 5 is a front view of Figure 4. Figure 6 is a side view of Figure 4. Figure 7 is a Y-Y cross-sectional view of Figure 6. Figure 8 is a perspective view of the cam of Figure 4. Figure 9 is a perspective view of Figure 8 in another direction. Figure 10 is a perspective view of the shaft of Figure 4. Below, descriptions of previously known matters are omitted or simplified to clarify the gist of the present invention.

Referring to FIGS. 1 to 10, the operating unit 1 of the 1-axis automatic transfer switch using inertia according to the present invention is such that when the power supply is unstable, such as an abnormality or power outage in the first power source, the mover 141 switches on the first power source. It can be switched from OFF to the second power source. Additionally, the operating unit 1 of the single-axis automatic transfer switch using inertia may include an energizing unit 100 and an operating unit 200.

The energizing unit 100 may include a first stator 110 electrically connected to the first power source, a second stator 120 electrically connected to the second power source, and a load stator 130 electrically connected to the load.

Here, the first power source to which the first stator 110 is electrically connected may be commercial power supplied from a power source such as Korea Electric Power Corporation, and the second power source to which the second stator 120 is electrically connected may be from an emergency generator. It may be an emergency power supply. Accordingly, when the first power source is cut off or a situation in which power supply is unstable occurs, power can be stably supplied to the load by switching from the first power source to the second power source.

In addition, the energizing part 100 includes a first fixed contact point 111 through which the mover 141 contacts the first stator 110, a second fixed contact point 121 through which the mover 141 contacts the second stator 120, and a first fixed contact point 111 through which the mover 141 contacts the first stator 110. The mover rotator 140 and the mover 141 that allow the fixed contact point 111 and the second fixed contact point 121 to rotate to any one of the Off states are not in contact with the first stator 110. Alternatively, an arc extinguishing chamber 150 may be further included to extinguish an arc generated when contacting the second stator 120.

The mover rotation device 140 may be coupled through one end of the shaft 230 and may be rotated by the rotational movement of the shaft 230. Accordingly, the mover 141 can be rotated, and can be electrically connected to the first stator 110 and the second stator 120 depending on the direction in which it is rotated. At this time, the mover rotation device 140 may be electrically connected to the load stator 130, and the power supplied as the mover 141 moves to the first fixed contact point 111 and the second fixed contact point 121 can be supplied to the load.

One end of the mover 141 is fixedly coupled to the mover rotation device 140 and can be rotated by the rotational movement of the shaft 230, and a movable contact point 141a can be formed at the other end so that the first stator 110 ) and may selectively contact the second stator 120. At this time, it is preferable that the movable contacts 141a are formed on both sides of the movable element 141 so that they can contact the first fixed contact point 111 and the second fixed contact point 121, respectively.

The operating unit 200 may be provided on one side of the energizing unit 100 and may be blocked from the outside by forming the operating unit case 210. The manipulation unit 200 can rotate the shaft 230 by manipulating the manipulation lever 220 to rotate the mover rotation device 140, and accordingly, the mover 141 is connected to the first stator 110 or It may be in contact with the second stator 120. The operating unit 200 includes an operating unit case 210, an operating lever 220, a shaft 230, a first cam device 240, a first switch assembly 250, a second cam device 260, and a second switch assembly. It may include (270).

The control unit case 210 can block the control unit 200 from the outside and form a space inside. In addition, the operation unit case 210 may have spring fixing holes 212 formed at the bottom of each side wall 211, corresponding to the first and second locking protrusions 231 and 233 of the shaft 230. It can be formed in a location where One end of the first tension spring 232 and the second tension spring 234 may be respectively fixed to the spring fixing hole 212 formed in the side wall 211.

The operating lever 220 may be formed to protrude to the outside of the operating unit case 210, and the first cam device 240 or the second cam device 260 may be operated by manipulating the operating lever 220. . The shaft 230 can rotate according to the rotation direction in which the first cam device 240 or the second cam device 260 operates by the operation lever 220, and the actuator rotation device ( 140 may rotate so that the mover 141 may contact the first stator 110 or the second stator 120 .

One end of the shaft 230 may be coupled to the mover rotation device 140 and may be rotated by operating the operation lever 220. The shaft 230 may be formed in the shape of a polygonal column and may transmit rotational force generated by rotation of the first cam 241 or the second cam 261 to the mover rotation device 140. Additionally, the shaft 230 may include a first locking protrusion 231, a first tension spring 232, a second locking protrusion 233, a second tension spring 234, and a stopper 235.

The first locking protrusion 231 may be formed on the other end of the shaft 230 and may be provided at a position corresponding to the first cam 241. Accordingly, as the first cam 241 rotates, the first protruding protrusion 241a may be caught on the first locking protrusion 231, and the shaft 230 rotates due to the rotational force of the first cam 241. can do. Additionally, the first locking protrusion 231 may be formed with a first locking hole 231a through which the other end of the first tension spring 232 can be fixed.

One end of the first tension spring 232 may be fixed to the spring fixing hole 212 formed at the bottom of both side walls 211 of the operating unit case 210, and the other end may be fixed to the first locking protrusion 231 of the shaft 230. It can be fixed to the first locking groove (231a) formed in .

The second locking protrusion 233 may be formed on the other end of the shaft 230 and may be provided at a position corresponding to the second cam 261. Accordingly, as the second cam 261 rotates, the second protruding protrusion 261a may be caught on the second locking protrusion 233, and the shaft 230 rotates due to the rotational force of the second cam 261. can do. Additionally, the second locking protrusion 233 may be formed with a second locking hole 234a through which the other end of the second tension spring 234 can be fixed.

One end of the second tension spring 234 may be fixed to the spring fixing hole 212 formed at the bottom of both side walls 211 of the operating unit case 210, and the other end may be fixed to the second locking protrusion 233 of the shaft 230. It can be fixed to the second locking groove (233a) formed in .

Here, the first tension spring 232 and the second tension spring 234 may be provided with the same specifications, and the first tension spring 232 and the second tension spring 234 pull the shaft 230 to both sides. The shaft 230 may be maintained in a neutral, non-rotating state by force. Accordingly, the mover 241 may be in an off state without contacting either the first stator 110 or the second stator 120.

In addition, the first tension spring 232 and the second tension spring 234 are the first actuator 242 and the second actuator 262, which operate by operation of the operation lever 220, are operated by the first cam 231 and the second actuator 262. It is desirable to set the tensile force of the first tension spring 232 and the second tension spring 234 to be weaker than the compression force of the first actuator 242 and the second actuator 262 so that the second cam 251 can rotate. do.

The stopper 235 may be fixedly coupled to the shaft 230 and may be formed with protrusions protruding in the directions of the first cam 241 and the second cam 261. The stopper 235 can mechanically prevent the mover 141 from being directly input from the current contact point to the opposite contact point by exceeding the Off allowable section due to external forces such as arc pressure when operating.

That is, the stopper 235 moves the movable contact point 141a from the Off state and from the first fixed contact point 111 to the second fixed contact point 121, or from the second fixed contact point 121 to the first fixed contact point 111. When operating, it is maintained only by the tensile force of the first tension spring 232 and the second tension spring 234. At this time, the movable member 141 exceeds the Off allowable section due to external forces such as operating force or arc pressure. Therefore, it is possible to mechanically prevent direct input from the current contact point to the opposite contact point.

The stopper 235 may protrude to contact the first protruding end 241b of the first cam 241 and the fourth protruding end 261b of the second cam, and may be connected to the first cam 241 or the second cam. When 261 attempts to rotate beyond a preset angle due to an external force, the first protruding end 241b or the fourth protruding end 261b may be blocked by the stopper 235 to prevent rotation beyond the preset angle.

Here, the stopper 235 is shown as being fixedly coupled in the drawing of the present invention, but may be coupled to a preset position by a fixing means and provided to be detachable. Accordingly, if the stopper 235 cannot prevent the rotation of the first protruding end 241b of the first cam 241 and the fourth protruding end 261b of the second cam due to wear or distortion, it can be easily replaced. You can use it.

The first cam device 240 may be provided on one side of the operation lever 220 and may rotate by operating the operation lever 220. Additionally, the first cam device 240 may be provided independently of the second cam device 260 provided on one side, and the first cam device 240 may rotate and operate without interfering with the second cam device 260. can do. As a result, when the first cam device 240 rotates, the shaft 230 can rotate, and as the shaft 230 rotates, the movable contact 141a of the mover rotation device 140 becomes the first fixed contact. It can be rotated to (111). The first cam device 240 may include a first cam 241, a first actuator 242, and a first link 243.

The first cam 241 may be provided on one side of the operation lever 220 and may rotate by operating the operation lever 220. Accordingly, the first cam 241 may rotate in a preset direction by the first actuator 242 and the first switch assembly 250. The first cam 241 may be rotatably coupled to one end of the first link 243 to the first link coupling end 241e, and the linear movement of the first actuator 242 moves the first link 243. The first cam 241 can be rotated through.

In addition, the first cam 241 includes a first protruding protrusion 241a that protrudes in a direction corresponding to the first stopping protrusion 231, a first protruding end 241b that protrudes to contact the stopper 235, Depending on the rotation direction of the first cam 241, the first switch assembly 250 is selectively provided with a second protruding end 241c that contacts the first switch 251 and a third protruding end (241c) that contacts the second switch 252 ( 241d) and one end of the first link 243 may include a first link coupling end 241e to which one end is rotatably coupled. The second protruding end 241c and the third protruding end 241d may be formed in a multi-stage form, whereby when the first cam 241 rotates, the first switch 251 forming the first switch assembly 250 ) and the timing at which the second switch 252 operates may be different.

The first actuator 242 may be coupled to one side of the other end of the first link 243, thereby being connected to the first cam 241 and causing the first cam 241 to operate due to the operation of the first actuator 242. ) can be rotated. Additionally, the first actuator 242 may include a first plunger 242a, a first coil 242b, and a first coil spring 242c.

The first plunger 242a may be provided inside the first coil 242b, and its starting position may be where one end protrudes to the outside of the first coil 242b by a preset length. In addition, the other end of the first link 243 may be rotatably coupled to one end of the first plunger 242a that protrudes to the outside, and the first cam 241 may be moved by the linear movement of the first plunger 242a. It can be rotated. In addition, the first plunger 242a may be provided with a first coil spring 242c at the other end, and may enter the inside of the first coil 242b while compressing the first coil spring 242c, or the compressed first coil It can be returned to the starting position by the elasticity of the spring 242c.

The first coil 242b may be provided on one side wall 211 of the operating unit case 210, and has a space within which the first plunger 242a can move in a straight line and reciprocate, and a first coil spring 242c. It can be provided.

The first coil spring 242c may be provided at the other end of the first plunger 242a inside the first coil 242b, and is compressed by the first plunger 242a when the first coil 242b is excited. You can. Additionally, when the excitation of the first coil 242b is completed, the first plunger 242a can be returned to its starting position by elasticity.

One end of the first link 243 may be rotatably coupled to the first link coupling end 241e of the first cam 241, and the other end may be rotatably coupled to one end of the first plunger 242a. there is. Additionally, the first link 243 may rotate the first cam 241 clockwise or counterclockwise by the linear reciprocating motion of the first plunger 242a.

Here, the operation of the first actuator 242 may be caused by current flowing into the first actuator 242 to excite the first coil 242b, and by exciting the first coil 242b, the first plunger 242a ) may enter the interior of the first coil 242b while compressing the first coil spring 242c provided at the other end. Thereafter, when the excitation of the first coil 242b is completed, the first plunger 242a can be returned to the starting position by the elasticity of the first coil spring 242c.

Additionally, the first actuator 242 is not limited to using a coil, and can be replaced with a configuration that can rotate a cam.

The first switch assembly 250 may be fixed to one surface of a switch bracket (B) whose both ends are fixed to the side wall 211 of the operating unit case 210, and is connected to the second protruding end 241c of the first cam 241. and the third protruding end 241d. Additionally, the first switch assembly 250 may include a first switch 251 and a second switch 252, and the first switch 251 and the second switch 252 are each represented as one switch in the drawing. Although shown, two switches each can be applied as a set to prevent malfunction due to switch failure.

Both ends of the switch bracket B may be fixed to the side wall 211 of the operating unit case 210, and the first switch assembly 250 may be fixed to one side and the second switch assembly 270 may be fixed to the other side.

In addition, the first switch assembly 250 is a switch that blocks current from flowing into the first actuator 242 in order to terminate the excitation of the first coil 242b that is excited by the current flowing into the first actuator 242. In order for the first cam 241 to rotate smoothly, when the first cam 241 rotates at a preset angle, the second protruding end 241c or the third protruding end 241d turns on the first switch ( 251) or the second switch 252 may be operated.

That is, current flows into the first actuator 242 to excite the first coil 242b, causing the first plunger 242a to enter the inside of the first coil 242b, and the first link 243 moves to the first cam. (241) can be rotated clockwise by a preset angle from the starting position. At this time, when the second protruding end (241c) operates the first switch (251), the first cam (241) rotates according to inertia. It can rotate in the desired direction (clockwise).

Next, the first cam 241 may complete rotation to the target point by the force of the first coil spring 242c pushing the first plunger 242a to the starting position, and the first cam 241 As a result of this rotation, the first protruding protrusion 241a may be caught by the first stopping protrusion 231, and the shaft 230 may be rotated by the rotational force of the first cam 241. Accordingly, the mover rotation device 140 rotates so that the mover 141 rotates toward the first stator 110 so that the movable contact point 141a can contact the first fixed contact point 111, and the load is 1 Can be connected to power.

Next, while the load is connected to the first power source, current flows into the first actuator 242 again to excite the first coil 242b, and the first plunger 242a is connected to the first coil 242b. As it goes inside, the first link 243 can rotate the first cam 241 by a preset angle in the counterclockwise direction opposite to the input of the first power, and at this time, the third protruding end 241d 2 When the switch 252 is activated, the first cam 241 can rotate in the direction in which it rotates (counterclockwise) according to inertia.

Next, the first cam 241 may complete rotation to the target point by the force of the first coil spring 242c pushing the first plunger 242a to the starting position, and the first cam 241 As a result of this rotation, the first protruding protrusion 241a, which was caught on the first stopping protrusion 231, moves the shaft 230 to its starting position due to the elasticity of the first tension spring 232, which was tensioned due to the input of the first power. can be rotated. Accordingly, the mover rotation device 140 rotates so that the mover 141 is separated from the first stator 110 and the power may be turned off.

At this time, a first tension spring 232 and a second tension spring 234 may be provided to prevent the shaft 230 from rotating beyond a preset angle, and the first tension spring 232 and the second tension spring 234 Due to the elasticity of the tension spring 234, the movable contact point 141a can be maintained in the off state and simultaneously prevented from being directly transferred to the second power source.

In addition, the stopper 235 fixedly coupled to the shaft 230 is blocked by the fourth protruding end 261b of the second cam 260 to prevent the shaft 230 from rotating beyond a preset angle, thereby forming a movable contact point ( 141a) can be applied as a secondary prevention means and a mechanical prevention means for exceeding the Off allowable section by rotating beyond a preset angle.

Accordingly, the movable contact point 141a is maintained in the Off state by preventing it from exceeding the Off allowable section due to external forces such as the arc pressure of the first tension spring 232 and the second tension spring 234, and at the same time, the first It is possible to prevent direct input from the fixed contact point 111 to the second fixed contact point 121.

The second cam device 260 may be provided to be symmetrical to the first cam device 240 and can rotate by operating the operation lever 220. Additionally, the second cam device 260 may be provided independently of the first cam device 240 provided on one side, and the second cam device 260 may rotate and operate without interfering with the first cam device 240. can do. As a result, when the second cam device 260 rotates, the shaft 230 can rotate, and as the shaft 230 rotates, the movable contact point 141a of the mover rotation device 140 becomes the second fixed contact point. It can be rotated to (121). The second cam device 260 may include a second cam 261, a second actuator 262, and a second link 263.

The second cam 261 may be provided on one side of the first cam 241 and may rotate by operating the operation lever 220. Accordingly, the second cam 261 may rotate in a preset direction by the second actuator 262 and the second switch assembly 270. The second cam 261 may be rotatably coupled to one end of the second link 263 to the second link coupling end 261e, and the linear movement of the second actuator 262 moves the second link 263. The second cam 261 can be rotated through.

In addition, the second cam 261 includes a second protruding protrusion 261a protruding in a direction corresponding to the second stopping protrusion 233, a fourth protruding end 261b protruding to contact the stopper 235, Depending on the rotation direction of the second cam 261, the second switch assembly 270 has a fifth protruding end (261c) selectively contacting the third switch 271, a sixth protruding end (261c) contacting the fourth switch 272 ( 261d) and a second link coupling end 261e to which one end of the second link 263 is coupled. The fifth protruding end 261c and the sixth protruding end 261d may be formed in a multi-stage form, whereby when the second cam 261 rotates, the third switch 271 forming the second switch assembly 270 ) and the timing at which the fourth switch 272 operates may be different.

Here, detailed drawings of the second cam 261 are not shown, but it may be configured in a symmetrical form with the first cam 241, and has the same configuration as the first cam 241 shown in FIGS. 8 and 9. It can be configured as follows.

The second actuator 262 may be coupled to one side of the other end of the second link 263, whereby it is connected to the second cam 261 and moves the second cam 261 due to the operation of the second actuator 262. ) can be rotated. Additionally, the second actuator 262 may include a second plunger 262a, a second coil 262b, and a second coil spring 262c.

The second plunger 262a may be provided inside the second coil 262b, and its starting position may be where one end protrudes to the outside of the second coil 242b by a preset length. In addition, the other end of the second link 263 may be rotatably coupled to one end of the second plunger 262a that protrudes to the outside, and the second cam 261 may be moved by the linear movement of the second plunger 262a. It can be rotated. In addition, the second plunger 262a may be provided with a second coil spring 262c at the other end, and may enter the inside of the second coil 262b while compressing the second coil spring 262c, or the compressed second coil It can be returned to the starting position by the elasticity of the spring 262c.

The second coil 262b may be provided on the other side wall 211 of the side wall 211 of the operation unit case 210 equipped with the first coil 242b, and the second plunger 262a inside moves linearly and reciprocates. A space and a second coil spring 262c may be provided.

The second coil spring 262c may be provided at the other end of the second plunger 262a inside the second coil 262b, and is compressed by the second plunger 262a when the second coil 262b is excited. You can. Additionally, when the excitation of the second coil 262b is completed, the second plunger 262a can be returned to its starting position by elasticity.

Here, detailed drawings of the second actuator 262 are not shown, but it may be configured in a symmetrical form with the first actuator 242, and has the same internal configuration of the first actuator 242 shown in FIG. 7. It can be configured.

One end of the second link 263 may be rotatably coupled to the second link coupling end 261e of the second cam 261, and the other end may be rotatably coupled to one end of the second plunger 262a. there is. Additionally, the second link 263 may rotate the second cam 261 clockwise or counterclockwise by the linear reciprocating motion of the second plunger 262a.

Here, the operation of the second actuator 262 may be caused by current flowing into the second actuator 262 to excite the second coil 262b, and by exciting the second coil 262b, the second plunger 262a ) may enter the interior of the second coil 262b while compressing the second coil spring 262c provided at the other end. Thereafter, when the excitation of the second coil 262b is completed, the second plunger 262a can be returned to the starting position by the elasticity of the second coil spring 262c.

Additionally, the second actuator 262 is not limited to using a coil, and can be replaced with a configuration that can rotate a cam.

The second switch assembly 270 may be fixed to the other side of a switch bracket (B) whose both ends are fixed to the side wall 211 of the operating unit case 210, and is connected to the fifth protruding end 261c of the second cam 261. and the sixth protruding end 261d. Additionally, the second switch assembly 270 may include a third switch 271 and a fourth switch 272, and the third switch 271 and the fourth switch 272 are each represented as one switch in the drawing. Although shown, two switches each can be applied as a set to prevent malfunction due to switch failure.

Both ends of the switch bracket B may be fixed to the side wall 211 of the operating unit case 210, and the first switch assembly 250 may be fixed to one side and the second switch assembly 270 may be fixed to the other side.

In addition, the second switch assembly 270 is a switch that blocks current from flowing into the second actuator 262 in order to terminate the excitation of the second coil 262b, which is excited by the current flowing into the second actuator 262. In order for the second cam 261 to rotate smoothly, when the second cam 261 rotates at a preset angle, the fifth protruding end 261c or the sixth protruding end 261d turns on the third switch ( 271) or the fourth switch 272 can be operated.

That is, current flows into the second actuator 262 to excite the second coil 262b, causing the second plunger 262a to enter the inside of the second coil 262b, and the second link 263 moves to the second cam. (261) can be rotated counterclockwise by a preset angle from the starting position. At this time, when the fifth protruding end (261c) operates the third switch (271), the second cam (261) moves according to inertia. It can rotate in the direction of rotation (counterclockwise).

Next, the second cam 261 may complete rotation to the target point by the force of the second coil spring 262c pushing the second plunger 262a to the starting position, and the second cam 261 Due to this rotation, the second protruding protrusion 261a may be caught by the second locking protrusion 233, and the shaft 230 may be rotated by the rotational force of the second cam 261. Accordingly, the mover rotation device 140 rotates so that the mover 141 rotates toward the second stator 120, so that the movable contact point 141a is separated from the second stator 120 and the power may be turned off.

Next, while the load is connected to the second power source, current flows into the second actuator 262 again to excite the second coil 262b, and the second plunger 262a operates on the second coil 262b. As it goes inside, the second link 263 can rotate the second cam 261 by a preset angle in the clockwise direction opposite to the input of the second power, and at this time, the sixth protruding end 261d is connected to the fourth cam 261. When the switch 272 is activated, the second cam 261 can rotate in the direction in which it rotates (clockwise) according to inertia.

Next, the second cam 261 may complete rotation to the target point by the force of the second coil spring 262c pushing the second plunger 262a to the starting position, and the second cam 261 As a result of this rotation, the second protruding protrusion 261a, which was caught on the second stopping protrusion 233, moves the shaft 230 to its starting position due to the elasticity of the second tension spring 234, which was tensioned due to the input of the second power. can be rotated. Accordingly, the mover rotation device 140 rotates so that the mover 141 separates from the second fixed contact point 121 and the movable contact point 141a may be in an off state.

At this time, a first tension spring 232 and a second tension spring 234 may be provided to prevent the shaft 230 from rotating beyond a preset angle, and the first tension spring 232 and the second tension spring 234 Due to the elasticity of the tension spring 234, the movable contact point 141a can be maintained in the off state and simultaneously prevented from being directly transferred to the first power source.

In addition, the stopper 235 fixedly coupled to the shaft 230 is blocked by the first protruding end 241b of the first cam 240 to prevent the shaft 230 from rotating beyond a preset angle, thereby forming a movable contact point ( 141a) can be applied as a secondary prevention means and a mechanical prevention means for exceeding the Off allowable section by rotating beyond a preset angle.

Accordingly, the movable contact point 141a is maintained in the Off state by preventing it from exceeding the Off allowable section due to external forces such as the arc pressure of the first tension spring 232 and the second tension spring 234, and at the same time, the second tension spring 234 is maintained in the Off state. It is possible to prevent direct input from the fixed contact point 121 to the first fixed contact point 111.

As described above, in the present invention, current flows into the actuator to rotate the cam through the link, and as the rotating cam rotates at a preset angle, the protruding end of the cam operates a switch that blocks current from flowing into the actuator, causing inertia. The simple structure of allowing the cam to complete rotation in the direction in which it is rotating can have the effect of lowering the failure rate and making maintenance convenient.

The present invention is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the invention as claimed in the claims. Of course, such changes are within the scope of the claims.

1: 1 axis automatic transfer switch
C: Control panel cover
B: Switch bracket
100: Electric current section
110: first stator
111: first fixed contact
120: second stator
121: second fixed contact
130: load stator
140: mover rotation device
141: mover
141a: movable contact
150: Soho room
200: control panel
210: Control panel case
211: side wall
212: Spring fixing hole
220: operating lever
230: shaft
231: 1st stumbling protrusion
231a: 1st locking groove
232: first tension spring
233: 2nd stumbling block
233a: first locking groove
234: 2nd tension spring
235: stopper
240: first cam device
241: 1st cam
241a: first protrusion 241b: first protrusion end
241c: second protruding end 241d: third protruding end
241e: 1st link coupling group
242: first actuator
242a: first plunger 242b: first coil
242c: first coil spring
243: first link
250: first switch assembly
251: first switch
252: second switch
260: second cam device
261: 2nd cam
261a: second protrusion 261b: fourth protrusion end
261c: 5th protruding end 261d: 6th protruding end
261e: 2nd link coupling group
262: second actuator
262a: second plunger 262b: second coil
262c: second coil spring
263: second link
270: second switch assembly
271: third switch
272: 4th switch

Claims (5)

A control panel case in which a space is formed inside by the control panel cover and spring fixing holes are formed on both side walls, respectively;
an operating lever protruding outward from the operating unit cover;
a first cam device provided on one side of the operating lever and rotated by the operating lever;
a first switch assembly, both ends of which are coupled to one surface of a switch bracket fixed to the side wall of the operation unit case, and which operates by rotation of the first cam device;
a second cam device provided on one side of the first cam device and rotated by the operation lever, and provided symmetrically to the first cam device and rotating independently;
a second switch assembly, both ends of which are fixedly coupled to the other surface of a switch bracket fixed to the side wall of the operation unit case, and operated by rotation of the second cam device; and
a shaft that transmits rotational force of the first cam device or the second cam device to rotate the mover rotator; Includes,
The shaft has one end coupled through the movable rotating device, and transmits the rotational force of the first cam device or the second cam device to connect the movable fixedly coupled to the movable rotating device to the first fixed contact or the second cam device. Contact it with a fixed contact point or place it in the Off state.
A control unit of a single-axis automatic transfer switch using inertia, characterized in that the mover is connected to a first power source or a second power source by one of the shaft and one mover rotation device or is placed in an off state. According to claim 1,
The first cam device is
A first cam provided on one side of the operating lever, formed in multiple stages and including a second protruding end and a third protruding end,
A first actuator connected to the first cam to rotate the first cam, and
An operating unit of a single-axis automatic transfer switch using inertia, characterized in that it includes a first link whose one end is connected to the first cam and the other end is connected to the first actuator. According to claim 2,
The first switch assembly is comprised of at least two switches,
A first switch that operates by the second protruding end rotating in one direction to block the current flowing into the first actuator, and
The operating unit of a single-axis automatic transfer switch using inertia, comprising a second switch that is operated by the third protruding end rotating in the other direction to block the current flowing into the first actuator. According to claim 1,
The second cam device is
A second cam provided on one side of the operating lever, formed in multiple stages and including a fifth protruding end and a sixth protruding end,
A second actuator connected to the second cam and rotating the second cam, and
A control unit of a 1-axis automatic transfer switch using inertia, characterized in that it includes a second link, one end of which is connected to a second cam, and the other end of which is connected to the second actuator. According to claim 4,
The second switch assembly is provided with at least two switches,
A third switch operated by the fifth protruding end rotating in one direction to block the current flowing into the second actuator, and
The operating unit of a single-axis automatic transfer switch using inertia, comprising a fourth switch that is operated by the sixth protruding end rotating in the other direction to block the current flowing into the second actuator.