KR102507648B1 - Circuit breaker and circuit breaker assembly include the same - Google Patents

Abstract

A circuit breaker and a circuit breaker assembly including the circuit breaker are disclosed. A circuit breaker assembly according to an embodiment of the present invention includes a circuit breaker and a casing in which the circuit breaker is coupled and accommodated. The casing is provided with a circuit breaker coupling portion to which the circuit breaker is slidably coupled. The circuit breaker coupling part is provided with a blocking plate for preventing any movement of the circuit breaker.
The circuit breaker is provided with a movement limiting unit for preventing arbitrary movement. The movement limiting unit includes a plurality of members that are linked and elastically coupled to each other. The movement limiting unit is operated only by manipulating the handle part and manipulating the connector fastening part.
Accordingly, coupling and separation of the circuit breaker and the circuit breaker assembly can be performed only by several stages of operation, so that work reliability and safety can be improved.

Description

Circuit breaker and circuit breaker assembly including the same {Circuit breaker and circuit breaker assembly include the same}

The present invention relates to a circuit breaker and a circuit breaker assembly including the circuit breaker, and more particularly, to a circuit breaker having a structure capable of permitting or restricting the withdrawal of a circuit breaker from a casing according to a connection state of a control power plug and a circuit breaker assembly including the circuit breaker. .

A vacuum circuit breaker is a device provided to break a circuit when an abnormal current such as overcurrent, short circuit, or ground fault occurs in an extra-high voltage or high-voltage distribution line.

The vacuum circuit breaker can be operated in a closing state or a trip state. In the closed state, the vacuum circuit breaker is energized with an external power source or load. In the trip state, the vacuum circuit breaker is cut off from an external power source or load.

A vacuum circuit breaker is used assembled in a casing. The casing is provided with a separate jack that is electrically coupled to the vacuum circuit breaker. Power of the vacuum breaker may be transmitted through the jack.

The vacuum circuit breaker can be slid and coupled to the casing. That is, after the vacuum circuit breaker is slid and coupled to the casing, the jack is coupled and operated.

At this time, while the vacuum breaker operates, the coupled state between the jack and the vacuum breaker must be maintained. When the coupled state is arbitrarily released, it is due to the possibility of damage and malfunction of the vacuum circuit breaker.

By the way, the traditional vacuum circuit breaker has an interlock structure for maintaining the state of the mechanism accommodated, but does not include a separate structure for maintaining the coupled state of the jack.

Therefore, there is a concern that the coupled jack may be arbitrarily separated from the vacuum breaker according to vibration generated during coupling and separation of the vacuum breaker, operation of the vacuum breaker, or positional change of the vacuum breaker.

In this case, the inside of the jack is disconnected, the reliability of the control power supply is reduced, and the output of the signal transmitted from the vacuum circuit breaker to the outside may also become unstable due to wiring or incomplete contact.

Korean Patent Document No. 10-1470048 discloses a pull-out device for a vacuum circuit breaker having a double locking function. Specifically, a pull-out device for a vacuum circuit breaker having a structure capable of automatically doubly locking a cross member and a rail in a state in which a truck is separated from the cross member is disclosed.

However, the pull-out device of the vacuum circuit breaker having such a structure has a limitation in suggesting only a method for maintaining a coupled state between the cross member and the rail. That is, the prior art document does not disclose a method for stably maintaining the energized state of the jack and the vacuum circuit breaker for energizing with an external control power source.

Korean Patent Document No. 10-0852436 discloses a door and input interlock device of a vacuum circuit breaker. Specifically, the door of the vacuum circuit breaker and the insertion interlock device having a structure in which the door of the vacuum circuit breaker is closed only at the power cut position display unit and can be drawn in and out are disclosed.

However, the prior art documents also do not suggest a method for preventing arbitrary separation of a jack that is energized and connected to an external control power supply of the vacuum circuit breaker.

That is, the above prior documents only suggest a method for preventing the vacuum circuit breaker from being arbitrarily separated from the rail, and a method for preventing malfunction by linking the vacuum circuit breaker with the energized state of the external control power and the movement of the vacuum circuit breaker. There are no reviews for

Korean Patent Document No. 10-1470048 (2014.12.05.) Korea Patent Document No. 10-0852436 (2008.08.14.)

An object of the present invention is to provide a circuit breaker having a structure capable of solving the above problems and a circuit breaker assembly including the same.

First, an object of the present invention is to provide a circuit breaker having a structure capable of preventing arbitrary movement in a state in which a member for transmitting external control power is coupled, and a circuit breaker assembly including the same.

Another object of the present invention is to provide a circuit breaker having a structure in which movement may be controlled in conjunction with a coupling state with a member for transmitting external control power, and a circuit breaker assembly including the same.

Another object of the present invention is to provide a circuit breaker having a structure capable of preventing arbitrary movement of a circuit breaker operating in various modes and a circuit breaker assembly including the circuit breaker.

In addition, an object of the present invention is to provide a circuit breaker having a structure in which any movement can be effectively prevented, and a circuit breaker assembly including the circuit breaker.

Another object of the present invention is to provide a circuit breaker having a structure in which coupling and separation from a casing are easy, and a circuit breaker assembly including the circuit breaker.

In order to achieve the above object, the present invention, the cart unit; a limiting plate movably coupled to the cart unit in a first direction and in a second direction opposite to the first direction; a rotating link unit rotatably coupled to the cart unit and link-coupled to the limiting plate; a vertical link portion coupled to the rotation link portion and extending in a third direction; and a connector connected to the vertical link portion and moved together with the vertical link portion in the third direction and in a fourth direction opposite to the third direction, wherein the limiting plate includes the first direction and the first direction. When moved in one of the two directions, overlaps with the blocking plate located outside the fourth direction of the cart unit along a fifth direction, and moves in the other one of the first and second directions. In this case, a blocker spaced apart from the blocking plate along the fifth direction is provided.

In addition, the blocking plate of the circuit breaker may include a blocking extension part extending in the fifth direction and having a predetermined height; and a blocking protrusion that is continuous with the blocking extension and has a height greater than that of the blocking extension, wherein the limiting plate includes a locking protrusion extending toward the blocking plate from one side facing the blocking plate. And, an end portion in a direction in which the catching protrusion extends may be positioned higher than a height of the blocking extension portion, but may be positioned lower than a height of the blocking protrusion portion.

In addition, when the connector of the circuit breaker is moved in the fourth direction and the rotating link part is rotated, the blocking plate is moved in one direction of the first direction and the second direction to engage with the blocking protrusion. The protrusions may be disposed to overlap each other along the fifth direction.

In addition, the limiting plate of the circuit breaker may include a first portion extending in the first direction and the second direction; a second portion continuous with the first portion and extending in the first and second directions; And partially surrounded by the first part and the second part, it may include a coupling groove in which a manipulation handle part movably coupled to the cart unit is accommodated.

In addition, the rotational link part of the circuit breaker includes a pressure pin rotatably coupled to the limiting plate, and the limiting plate is recessed at an outer circumference of the second portion to include a pin insertion portion in which the pressure pin is accommodated. can include

In addition, the circuit breaker may include a frame positioned outside the cart unit in the third direction, connected to the cart unit, and movably coupled to the vertical link unit in the third and fourth directions; and an elevating frame coupled to the connector and coupled to the frame to be movable along with the connector in the third direction and the fourth direction.

In addition, the vertical link part of the circuit breaker may include a head part connected to the elevating frame; a vertical extension portion connected to the head portion and extending between the elevating frame and the rotation link portion; And it may include a link connecting portion connected to the vertical extension portion and the rotating link portion, respectively.

The vertical link part of the circuit breaker may include a return spring located outside the head part in the fourth direction and elastically supporting the head part.

In addition, the rotation link unit of the circuit breaker may include a link body extending between the vertical link unit and the limiting plate; A first link coupled to the link body and the vertical link portion, respectively; and a second link coupled to the link body and the limiting plate, respectively.

In addition, the first link of the circuit breaker may convert movement of the vertical link unit into rotation of the link body, and the second link may convert rotation of the link body into movement of the limiting plate.

The blocker may include a fastening member movably coupled to the limiting plate to the cart, and the limiting plate may include a first portion extending in the first direction and the second direction; and a second portion continuous with the first portion and extending in the first direction and the second direction, wherein at least one of the first portion and the second portion includes the first portion and the second portion. Extending in two directions, a moving groove to which the fastening member is coupled may be formed.

In addition, the present invention, the casing formed with a space therein; and a circuit breaker slidably coupled to the casing and drawn in or out of the space, wherein the casing includes: a rail part positioned below the retracted circuit breaker and extending in a front-rear direction; and a blocking plate positioned on one side of the rail unit in the width direction and extending in the front-rear direction, the height of the front end being higher than that of the rear end, wherein the circuit breaker is configured to be energized with an external control power source. a connector that is connected and is provided to be able to move up and down in the vertical direction; a vertical link part extending in a vertical direction and connected to the connector to be moved up and down together with the connector; a rotating link coupled to the vertical link and rotated according to the elevation of the vertical link; and a limiting plate located on the upper side of the rail unit and coupled to the rotational link unit to be moved to the left or right according to the rotation of the rotation link unit, wherein the limiting plate protrudes toward the rail unit, A lower end is positioned lower than the front end and higher than the rear end of the blocking plate.

In addition, the circuit breaker of the circuit breaker assembly is introduced into the casing from the front side of the casing, and on the upper side of the rail unit, a first groove portion located on the front side of the rail unit and having an upper side open; and a manipulation handle portion positioned at a rear side of the rail portion and formed with a second groove having an open upper side, the circuit breaker extending toward the front side and movably coupled in a vertical direction. and an insertion protrusion that is connected to the manipulation handle part, is elevated together with the manipulation handle part, and is inserted into the first groove part or the second groove part.

In addition, the circuit breaker may include a body portion slidably coupled to the casing and facing the rail portion; and an elevating spring provided in the body portion to elastically support the insertion protrusion, and when the manipulation handle portion is pressed upward, the elevating spring may store restoring force.

According to an embodiment of the present invention, the following effects can be achieved.

First, external control power is applied to the circuit breaker with a jack detachably coupled to the connector. The connector is coupled to an elevating frame provided to be elevating. The elevating frame is coupled to a vertical link unit coupled to the cart unit so as to be elevating in the vertical direction.

The vertical link portion is rotatably coupled to the rotation link portion coupled to the cart portion. The rotating link unit is coupled to a limiting plate coupled to the cart unit so as to be movable in left and right directions. The rotary link unit converts the vertical link unit's upward and downward movement into rotational movement, and then converts this into the left and right movement of the limiting plate.

A blocking plate is provided on the left or right side of the limiting plate. When a jack is connected to the connector and the components are actuated, the limiting plate is moved toward the blocking plate. The moved limiting plate and blocking plate overlap each other in the front-back direction. In the above state, the circuit breaker does not move in the direction of separation from the casing.

When the jack is disconnected from the connector and the components are actuated in reverse, the limiting plate is moved in the opposite direction to the blocking plate. The moved limiting plate and blocking plate are spaced apart in the front-rear direction and do not overlap. In this state, the circuit breaker can be moved in a direction to be separated from the casing.

Accordingly, the movement of the circuit breaker may be allowed or limited depending on whether the jack is coupled to the connector. Furthermore, when a jack is connected to the connector, the circuit breaker is not arbitrarily separated from the casing until the jack is disconnected.

As a result, malfunction and damage to the circuit breaker due to arbitrary separation of the connector and the jack can be prevented.

In addition, a rail portion extending in a direction in which the circuit breaker is inserted and withdrawn is provided in the casing. A plurality of locking grooves are formed on the upper surface of the rail unit. A plurality of catching grooves are respectively formed at positions corresponding to modes in which the circuit breaker operates.

In the circuit breaker, an elevation portion positioned to face the rail portion is positioned. The elevating unit includes an insertion protrusion that moves in a vertical direction and is inserted into or pulled out of any one of a plurality of catching grooves.

The elevation part is connected to the operation handle part. The operating handle is provided on the circuit breaker so as to be movable in the vertical direction, and one end thereof is exposed to the outside of the circuit breaker.

Accordingly, the operator can position the circuit breaker to be operated in a specific mode and insert the insertion protrusion into any one of the plurality of hooking grooves by manipulating the manipulation handle.

When moving the circuit breaker, the operator manipulates the manipulation handle to withdraw the insertion protrusion from any one of the grooves. Accordingly, the circuit breaker can be slid along the rail portion. Accordingly, the circuit breaker operating in a specific mode is not moved arbitrarily.

In addition, when the circuit breaker is to be moved, the purpose can be easily achieved by withdrawing the insertion protrusion from the hooking groove. Insertion and withdrawal of the insertion protrusion is interlocked with the movement of the manipulation handle part exposed to the outside. Therefore, the operator can easily control the movement of the circuit breaker by manipulating the operation handle.

In addition, the movement of the circuit breaker can be controlled in multiple stages by the above configuration. That is, the circuit breaker can be moved only when all conditions related to whether the insertion protrusion is inserted into the catching groove and whether the connector and the jack are coupled to each other are satisfied.

Therefore, the work reliability can be improved compared to the case where the movement of the circuit breaker is limited by a single number of means. Furthermore, the control convenience of the circuit breaker is improved, and accidents due to arbitrary movement of the circuit breaker can be prevented.

In addition, an inclined surface is provided on the rail portion on which the circuit breaker is seated. The inclined surface extends toward the direction in which the circuit breaker is inserted, and extends downward. That is, the inclined surface guides the circuit breaker from the lower side.

Thus, the circuit breaker can be easily inserted into and withdrawn from the casing. Accordingly, work convenience may be improved.

1 is a perspective view showing a circuit breaker assembly according to an embodiment of the present invention.
FIG. 2 is a plan view illustrating the circuit breaker assembly of FIG. 1;
3 is a front view showing the circuit breaker assembly of FIG. 1;
4 is a perspective view illustrating a casing provided in the circuit breaker assembly of FIG. 1;
5 is a plan view showing the casing of FIG. 4;
6 is a perspective view illustrating a circuit breaker coupling part provided in the casing of FIG. 4 .
FIG. 7 is a front view illustrating the circuit breaker coupling part of FIG. 6 .
FIG. 8 is a left side view (a) and a right side view (b) illustrating the circuit breaker coupling part of FIG. 6 .
FIG. 9 is a plan view (a) and a bottom view (b) illustrating the circuit breaker coupling part of FIG. 6 .
10 is a perspective view illustrating a circuit breaker included in the circuit breaker assembly of FIG. 1;
Fig. 11 is a plan view showing the circuit breaker of Fig. 10;
Fig. 12 is a front view showing the circuit breaker of Fig. 10;
Fig. 13 is a side view showing the breaker of Fig. 10;
Fig. 14 is a bottom view showing the circuit breaker of Fig. 10;
Fig. 15 is a perspective view showing the internal configuration of the circuit breaker of Fig. 10;
FIG. 16 is a perspective view illustrating a cart unit and a movement limiting unit provided in the circuit breaker of FIG. 10 .
FIG. 17 is a front view illustrating a cart unit and a movement limiting unit provided in the circuit breaker of FIG. 10 .
FIG. 18 is an AA′ cross-sectional view illustrating a cart unit and a movement limiting unit provided in the circuit breaker of FIG. 10 .
FIG. 19 is a front cross-sectional view illustrating a cart unit and a movement limiting unit provided in the circuit breaker of FIG. 10 .
FIG. 20 is a perspective view (a) and a front view (b) illustrating a limiting plate provided in the circuit breaker of FIG. 10 .
21 to 24 are bottom perspective views illustrating a cart unit and a movement limiting unit provided in the circuit breaker of FIG. 10 .
25 is a perspective view illustrating a state in which the circuit breaker of FIG. 10 is coupled to the casing of FIG. 4 .
FIG. 26 is a perspective view showing a state in which any separation of the circuit breaker is prevented by a blocking plate provided in the casing of FIG. 4 and a limiting plate provided in the circuit breaker of FIG. 10 .

Hereinafter, a circuit breaker 20 and a circuit breaker assembly 1 including the circuit breaker 20 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, descriptions of some components may be omitted to clarify the characteristics of the present invention.

1. Definition of terms

The term "breaker" used in the following description refers to any device that is energized and connected to a power source and a load, respectively, and allows or cuts off the flow of the power source and the load. In one embodiment, the circuit breaker may be equipped with a vacuum circuit breaker or an air circuit breaker.

The term "conductivity" used in the following description means a state in which two or more different members can receive current or electrical signals from each other. In one embodiment, the energized state may be formed in a wired manner by a conducting wire member or the like, or formed in a wireless manner by Wi-Fi or Bluetooth.

The term "jack" used in the following description refers to a member provided to electrically connect two or more different members.

In one embodiment, the jack may be detachably and energized coupled to a connector provided on any one member. The jack may be electrically connected to another member through a conducting wire member or the like.

That is, when the jack is detachably coupled to the connector, one member including the connector and another member to which the jack is connected by a lead wire member may be electrically connected to each other.

In the following description, the term "separated along a specific direction" means a state in which the elements are disposed without overlapping along the specific direction. For example, the meaning of being spaced apart along the front-back direction means a state in which they are disposed so as not to overlap along the front-back direction.

The terms "upper side", "lower side", "left side", "right side", "front side" and "rear side" used in the following description refer to FIGS. 1, 4, 6, 10, 16, and 16 and FIGS. 21 to 26 will be understood with reference to the coordinate systems shown.

2. Description of the configuration of the circuit breaker assembly 1 according to the embodiment of the present invention

1 to 3, a circuit breaker assembly 1 according to an embodiment of the present invention includes a casing 10 and a circuit breaker 20.

The casing 10 forms the outer shape of the circuit breaker assembly 1 . The circuit breaker 20 may be slid and coupled to the casing 10 . In the illustrated embodiment, the circuit breaker 20 slides toward the front side and is inserted into the casing 10 . Further, the circuit breaker 20 is slid to the rear side and taken out of the casing 10.

If the jack is detachably coupled to the circuit breaker 20 after the circuit breaker 20 is slid and drawn in by a predetermined distance, the circuit breaker 20 can be prevented from being arbitrarily pulled out.

In addition, in the circuit breaker assembly 1 according to the embodiment of the present invention, the jack must be coupled to the circuit breaker 20 in order to be further moved after the circuit breaker 20 is slid and drawn in by the predetermined distance.

Furthermore, in the circuit breaker assembly 1 according to the embodiment of the present invention, when the jack coupled to the retracted circuit breaker 20 is not separated, the retracted circuit breaker 20 is not arbitrarily withdrawn from the casing 10.

Hereinafter, each component of the circuit breaker assembly 1 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

(1) Description of the structure of the casing 10

Referring to FIGS. 4 to 9 , a circuit breaker assembly 1 according to an embodiment of the present invention includes a casing 10 .

The casing 10 forms the outer shape of the circuit breaker assembly 1 . A space is formed inside the casing 10 to accommodate the circuit breaker 20 . The circuit breaker 20 accommodated in the space may be electrically connected to an external control power source by the jack.

The casing 10 is preferably formed of a material having sufficient rigidity. This is to prevent damage to the circuit breaker 20 accommodated by an external impact. In one embodiment, the casing 10 may be formed of a material such as stainless steel.

In the illustrated embodiment, the casing 10 has a rectangular cross section and has a rectangular prism shape extending in the vertical direction. The shape of the casing 10 may be changed according to the shape of the circuit breaker 20 accommodated therein or the surrounding environment in which the circuit breaker assembly 1 is installed.

In the illustrated embodiment, the casing 10 includes a base 100, a vertical portion 200 and a circuit breaker coupling portion 300.

The base 100 forms the lower side of the casing 10 . A vertical portion 200 and a circuit breaker coupling portion 300 are positioned on the base 100 .

The base 100 supports the circuit breaker 20 inserted into the casing 10 from the lower side. That is, the circuit breaker 20 can be slid in the extension direction of the base 100, forward and backward directions in the illustrated embodiment, while being seated on the base 100.

The base 100 may have any shape capable of supporting the circuit breaker 20 from the lower side. In the illustrated embodiment, the base 100 is formed in a rectangular plate shape extending in the left and right directions and in the front and rear directions.

On the upper side of the base 100, the vertical part 200 is located. The vertical portion 200 has its lower side coupled to the base 100 and extends upward in a direction opposite to the base 100, in the illustrated embodiment.

The circuit breaker coupling part 300 is located on the upper side of the base 100. The circuit breaker coupling part 300 may be fixedly coupled to the base 100 . The circuit breaker coupling part 300 supports the circuit breaker 20 accommodated in the casing 10 so as to be slidably movable in the forward and backward directions.

In the illustrated embodiment, the base 100 includes a horizontal plate 110, a support member 120 and an accommodation space 130.

The horizontal plate 110 forms the outer shape of the base 100 . The horizontal plate 110 is combined with other components of the casing 10, the vertical portion 200 and the circuit breaker coupling portion 300 in the illustrated embodiment. The horizontal plate 110 may support the components from the lower side.

The horizontal plate 110 is combined with other components of the base 100. In the illustrated embodiment, the horizontal plate 110 is combined with the support member 120 and the receiving space 130.

As can be seen from the name, the horizontal plate 110 is provided in a plate shape. In the illustrated embodiment, the horizontal plate 110 extends in front and rear directions and left and right directions, and is provided in a rectangular plate shape having a thickness in the vertical direction. The shape of the horizontal plate 110 may be changed to any shape capable of performing the above-described functions.

Any one of the extension directions of the horizontal plate 110, each corner in the left-right direction in the illustrated embodiment is coupled to the support member 120. In addition, the accommodation space 130 is formed in the upper side of the thickness direction of the horizontal plate 110 and the vertical direction in the illustrated embodiment.

The support member 120 is a part that is coupled to the ground or the bottom surface where the base 100 is installed. The support member 120 supports the horizontal plate 110 so that the horizontal plate 110 is spaced apart from the ground or the floor surface by a predetermined distance.

The supporting member 120 is coupled to the horizontal plate 110 . In addition, a plurality of support members 120 may be provided. The plurality of support members 120 may be spaced apart from each other and coupled to each corner of the horizontal plate 110 in the extending direction.

In one embodiment, the support member 120 and the horizontal plate 110 may be fastened by a screw member or the like.

In the illustrated embodiment, two support members 120 are provided, and are respectively positioned at left and right corners of the horizontal plate 110 . The support member 120 may be fixedly coupled to each corner of the horizontal plate 110 .

A plurality of support members 120 are positioned to face each other with the horizontal plate 110 interposed therebetween. In other words, the plurality of support members 120 are positioned to face each other with the accommodating space 130, the vertical portion 200, and the circuit breaker coupling portion 300 interposed therebetween.

The support member 120 may have any shape capable of supporting the horizontal plate 110 . In the illustrated embodiment, the support member 120 includes a first portion extending in a vertical direction and a second portion continuing with the first portion and extending in a left and right direction parallel to the ground or the floor.

The support member 120 may extend in any one direction among directions in which the horizontal plate 110 extends. In the illustrated embodiment, the support member 120 extends in the front-rear direction, which is the direction in which the left and right edges of the horizontal plate 110 extend.

In one embodiment, the extended length of the support member 120 may be longer than the extended length of the horizontal plate 110 . Therefore, the contact area of the support member 120 with the ground or the bottom surface is also increased, so that the support member 120 can stably support the horizontal plate 110 .

An accommodation space 130 is formed between the upper side of the horizontal plate 110 and the plurality of support members 120 .

The accommodating space 130 is a space in which the circuit breaker 20 is accommodated. The accommodating space 130 may be defined as a space formed inside the casing 10 .

The accommodating space 130 is located on the upper side of the horizontal plate 110 . In addition, the accommodation space 130 may be surrounded by the horizontal plate 110 and the vertical portion 200 .

Specifically, in the illustrated embodiment, the lower side of the accommodation space 130 is surrounded by the horizontal plate 110 . Further, the left and right sides of the rear of the accommodating space 130 are surrounded by the first plate 210 of the vertical portion 200, and the rear side is surrounded by the second plate 220 of the vertical portion 200.

A portion of the accommodating space 130 surrounded by other members and other portions communicate with the outside. The blocker 20 may enter the accommodation space 130 in any one direction among the other parts.

In the illustrated embodiment, the front side, the front left and right sides, and the upper side of the accommodation space 130 communicate with the outside. At this time, the blocker 20 may enter the accommodation space 130 through the front side of the accommodation space 130 .

In addition, the entered circuit breaker 20 is directed toward the accommodation space 130 and the opposite direction by the circuit breaker coupling part 300 coupled to the horizontal plate 110 surrounding the lower side of the accommodation space 130, shown. In an embodiment of the present invention, it can be slid in the forward and backward directions. A detailed description thereof will be described later.

The vertical portion 200 partially surrounds the circuit breaker 20 inserted into the casing 10 . The vertical portion 200 includes various configurations for the circuit breaker 20 to be energized with an external control power source, power source, or load.

In addition, the vertical portion 200 fixes the circuit breaker 20 accommodated in the accommodation space 130 so that it does not swing. A coupled state between the circuit breaker 20 and the casing 10 can be stably maintained by the vertical portion 200 .

The vertical portion 200 is coupled to the base 100 . Specifically, one end of the vertical portion 200 toward the base 100, in the illustrated embodiment, the lower end is coupled to the horizontal plate 110. In one embodiment, the vertical portion 200 may be fixedly coupled to the base 100.

The vertical portion 200 is located on one side of the direction in which the horizontal plate 110 extends. In the illustrated embodiment, the vertical portion 200 is located on the rear side of the horizontal plate 110.

The vertical portion 200 may be partially covered by the support member 120 . In the illustrated embodiment, the left and right sides of the vertical portion 200 are partially wrapped by the support member 120 .

The vertical portion 200 is formed extending upward in a direction opposite to the base 100, in the illustrated embodiment.

A space is formed inside the vertical part 200 . The space may be surrounded by the first plate 210 , the second plate 220 and the reinforcing member 230 constituting the vertical portion 200 .

One side of the space, the front side in the illustrated embodiment, is open. The combined circuit breaker 20 may be partially accommodated in the space formed inside the vertical portion 200 .

In the illustrated embodiment, the vertical portion 200 has a rectangular pillar shape with front and upper sides open, left and right sides closed, and rear side partially open. The shape of the vertical portion 200 may be changed according to the shape of the circuit breaker 20 .

In the illustrated embodiment, the vertical portion 200 includes a first plate 210, a second plate 220, a reinforcing member 230, a guide rail 240 and a guide portion 250.

The first plate 210 forms both sides of the vertical portion 200, left and right in the illustrated embodiment.

The first plate 210 is coupled to the base 100 . Specifically, the lower side of the first plate 210 is coupled to the horizontal plate 110 and the support member 120, respectively. For the coupling, a screw member or a rivet member may be provided.

A plurality of first plates 210 may be provided. The plurality of first plates 210 may be spaced apart from each other to form each side of the vertical portion 200 . In the illustrated embodiment, two first plates 210 are provided and disposed to face a space formed inside the vertical portion 200 .

The first plate 210 extends in two different directions. In the illustrated embodiment, the first plate 210 has a rectangular plate shape in which an extension length in the vertical direction is longer than an extension length in the front-back direction and a thickness in the left-right direction.

The first plate 210 is connected to the second plate 220 and the reinforcing member 230 respectively. The second plate 220 and the reinforcing member 230 may extend between the plurality of first plates 210 and each end may be coupled to the plurality of first plates 210 .

The second plate 220 forms the other side of the upright part 200, the rear side in the illustrated embodiment.

The second plate 220 is coupled to the first plate 210 . Specifically, the second plate 220 extends between the plurality of first plates 210, and each end in the extending direction is coupled to the plurality of first plates 210, respectively. In the illustrated embodiment, the second plate 220 extends in the left-right direction, and each end in the left-right direction is coupled to the first plate 210, respectively.

The rigidity of the vertical portion 200 may be reinforced by the second plate 220 .

The reinforcing member 230 forms the other side of the vertical portion 200, the front side in the illustrated embodiment.

The reinforcing member 230 is disposed to partially cover the front side of the vertical portion 200 . That is, the width of the reinforcing member 230 is shorter than the vertical extension of the first plate 210 .

The reinforcing member 230 is coupled to the first plate 210 . Specifically, the reinforcing member 230 extends between the plurality of first plates 210, and each end in the extending direction is coupled to the plurality of first plates 210, respectively. In the illustrated embodiment, the reinforcing member 230 extends in the left-right direction, and each end in the left-right direction is coupled to the first plate 210, respectively.

Accordingly, the rigidity of the vertical portion 200 in the front-back and vertical directions may be reinforced by the second plate 220 and the reinforcing member 230 .

The guide rail 240 guides the slide movement of the circuit breaker 20 accommodated in the casing 10 . By the guide rail 240, the circuit breaker 20 may be slid in a direction toward the vertical portion 200 or in a direction opposite thereto, forward and backward in the illustrated embodiment, along a predetermined path.

The guide rail 240 extends in the direction in which the circuit breaker 20 slides, in the forward and backward directions in the illustrated embodiment. One end of the extension direction of the guide rail 240, the front side end in the illustrated embodiment may be located close to the front side of the horizontal plate (110). The other end of the extension direction of the guide rail 240, the rear end in the illustrated embodiment may be positioned close to the rear side of the horizontal plate 110.

A plurality of guide rails 240 may be formed. A plurality of guide rails 240 are spaced apart from each other. The plurality of guide rails 240 may support the blocker 20 in a sliding manner at different positions.

In the illustrated embodiment, two guide rails 240 are provided, including a first guide rail 241 and a second guide rail 242 . The first guide rail 241 supports the blocker 20 to be slidably movable from the left side. The second guide rail 242 supports the blocker 20 to be slidably movable from the right side.

In the illustrated embodiment, the guide rail 240 has a space extending in its extension direction, that is, in the front-rear direction, formed therein. The wheel unit 720 provided in the cart unit 700 of the circuit breaker 20 is rotatably accommodated in the space. The wheel unit 720 may rotate and move in the direction in which the guide rail 240 extends, that is, in the forward and backward directions, while being accommodated in the space.

The height of the space, that is, the length in the vertical direction may be determined according to the diameter of the wheel unit 720.

The guide unit 250 guides the circuit breaker 20 coupled to the casing 10 to be slid to an accurate position in the width direction, in the left and right directions in the illustrated embodiment.

The guide part 250 is coupled to the base 100 . Specifically, the guide unit 250 is coupled to the upper side of the horizontal plate 110 .

The guide part 250 extends in the direction in which the guide rail 240 extends, in the front and rear directions in the illustrated embodiment. It will be appreciated that the extension direction of the guide portion 250 is the same as the direction in which the blocker 20 slides.

In this case, the extension length of the guide part 250 may be formed shorter than the extension length of the guide rail 240 . In addition, the guide part 250 may be positioned to overlap the guide rail 240 in the left and right directions.

In other words, the front side end of the guide part 250 may be located at a rear side end rather than the front side end of the guide rail 240 . Also, the rear side end of the guide part 250 may be located at a front side rather than the rear side end of the guide rail 240 .

The guide part 250 is positioned between the plurality of guide rails 240 . In the illustrated embodiment, the guide unit 250 is positioned between the first guide rail 241 on the left and the second guide rail 242 on the right. In one embodiment, the distance between the guide unit 250 and each of the guide rails 241 and 242 may be the same.

An insertion guide part 730 provided in the cart part 700 of the circuit breaker 20 is positioned above the guide part 250 . In other words, the guide part 250 is disposed overlapping with the insertion guide part 730 in the vertical direction.

The circuit breaker coupling part 300 is positioned adjacent to the guide part 250 .

The circuit breaker coupling part 300 is a part to which the circuit breaker 20 accommodated in the casing 10 is slidably coupled. The circuit breaker 20 may slide in the forward and backward directions in the illustrated embodiment in a state coupled to the circuit breaker coupling part 300 .

The circuit breaker coupling part 300 is located between a plurality of guide rails 240 . In the illustrated embodiment, the circuit breaker coupling part 300 is located between the first guide rail 241 located on the left side and the second guide rail 242 located on the right side.

In addition, the circuit breaker coupling part 300 is located adjacent to the guide part 250 . In the illustrated embodiment, the circuit breaker coupling part 300 is located between the first guide rail 241 and the guide part 250 located on the left side.

The circuit breaker coupling part 300 extends in the direction in which the guide rail 240 extends, in the illustrated embodiment, in the forward and backward directions. At this time, the extended length of the circuit breaker coupling part 300 may be formed shorter than the extended length of the guide rail 240 .

The circuit breaker coupling part 300 is coupled to the base 100 . Specifically, the circuit breaker coupling part 300 is coupled to the horizontal plate 110 of the base 100. In one embodiment, the circuit breaker coupling part 300 may be fixedly coupled to the horizontal plate 110 by a separate fastening member.

The circuit breaker coupling part 300 may limit the slide movement of the circuit breaker 20 . Specifically, after the circuit breaker 20 slides by a predetermined distance in the direction in which the circuit breaker 20 is coupled to the casing 10, the circuit breaker coupling part 300 restricts the circuit breaker 20 from being further moved unless additional manipulation is involved. .

When the above additional operation is performed, the circuit breaker coupling part 300 allows additional sliding movement of the circuit breaker 20 . Accordingly, the circuit breaker 20 can be moved to a position where it can be operated.

To this end, the circuit breaker coupling part 300 may be in contact with or spaced apart from the movement limiting part 800 provided in the circuit breaker 20 . The contact or separation is achieved by manipulating the cart unit 700 while the circuit breaker 20 slides along the circuit breaker coupling part 300 . A detailed description thereof will be described later.

In the embodiment shown in FIGS. 6 to 9 , the circuit breaker coupling part 300 includes a rail part 310 , an inclined surface 320 , a hooking groove part 330 and a blocking plate 340 .

The rail part 310 forms the body of the circuit breaker coupling part 300 . The rail unit 310 extends in the direction in which the guide rail 240 extends, in the illustrated embodiment, in the forward and backward directions. The circuit breaker 20 may be slid along the rail 310 in a direction toward the vertical portion 200 or in a direction opposite thereto, forward and backward in the illustrated embodiment.

It will be understood that the extension length of the circuit breaker coupling part 300 may be determined according to the length of the rail part 310 .

In the illustrated embodiment, the rail unit 310 includes a top surface 311 and a side surface 312 .

The upper surface 311 forms one side opposite to the horizontal plate 110 of each side of the rail unit 310, the upper side in the illustrated embodiment. The upper surface 311 covers the space formed inside the rail unit 310 from the upper side.

The upper surface 311 extends in the direction in which the guide rail 240 extends, in the illustrated embodiment, in the forward and backward directions. In addition, the upper surface 311 has a width in a direction toward each of the plurality of guide rails 240, in the left and right directions in the illustrated embodiment.

That is, in the illustrated embodiment, the upper surface 311 has a rectangular plate shape in which an extension length in the front-back direction is longer than an extension length in the left-right direction and has a thickness in the vertical direction. The shape of the upper surface 311 may be changed according to the shape of the circuit breaker coupling part 300 .

An engaging groove 330 is formed on the upper surface 311 . An insertion protrusion 815 penetrating the guide bracket 814 of the movement limiting unit 800 is inserted into or taken out of the locking groove 330 . Accordingly, the sliding movement of the blocker 20 may be restricted or allowed.

In the above embodiment, a plurality of catching grooves 330 may be formed. That is, in the illustrated embodiment, the first groove portion 331 is formed at the front side end of the upper surface 311 . In addition, a second groove 332 is formed adjacent to the rear side end of the upper surface 311 through.

The insertion protrusion 815 of the movement limiting unit 800 is inserted into each of the grooves 331 and 332 to be retractable. Accordingly, the circuit breaker 20 can be maintained in a test position or a service position. A detailed description thereof will be described later.

The upper surface 311 may be located at a predetermined height. In the illustrated embodiment, the height of the upper surface 311 may be defined as the second height h2. The second height h2 may be defined as a vertical distance between a portion where the base 100 or the side surface 312 is coupled to the base 100 and an upper end of the top surface 311 .

In this case, the second height h2 may be formed higher than the first height h1 that is the maximum height of the inclined surface 320 . That is, the vertical height of the upper surface 311 is higher than the vertical height of the flat portion of the inclined surface 320 . In one embodiment, the second height h2 may be higher than the first height h1 by 2 mm.

Therefore, as will be described later, the length by which the manipulation handle 740 must be moved upward in order for the insertion protrusion 815 to be withdrawn from the first groove portion 331 is the length of the insertion protrusion 815 relative to the second groove portion 332. It is shorter than the length that the manipulation handle part 740 has to be moved upward in order to be withdrawn from it.

As a result, the circuit breaker 20 can be separated from the casing 10 in a state in which the jack (not shown) is separated from the connector 410 and the limiting plate 820 does not come into contact with the blocking plate 340 . A detailed description thereof will be described later.

Each corner of the top surface 311 in the width direction, in the illustrated embodiment, the side surface 312 is formed extending from the left edge and the right edge. In addition, an inclined surface 320 is provided at one edge of the upper surface 311 in the longitudinal direction, a front edge in the illustrated embodiment.

Side 312 forms the other of each side of rail section 310, the left and right sides in the illustrated embodiment. The side surface 312 covers the space formed inside the rail unit 310 from left and right sides.

The side surface 312 extends in the direction in which the guide rail 240 extends, in the illustrated embodiment, in the forward and backward directions. In addition, the side surface 312 has a width in a direction toward and opposite to the horizontal plate 110, in a vertical direction in the illustrated embodiment.

That is, in the illustrated embodiment, the side surface 312 is provided in a rectangular plate shape having an extension length in the front-back direction longer than an extension length in the up-down direction and a width in the left-right direction. The shape of the side surface 312 may be changed according to the shape of the circuit breaker coupling part 300 .

The side surface 312 is continuous with the top surface 311 . The side surface 312 forms a predetermined angle with the upper surface 311 and may extend toward a direction opposite to the upper surface 311, downward in the illustrated embodiment. In one embodiment, the predetermined angle may be a right angle.

Side 312 is coupled with the horizontal plate 110. Specifically, the side surface 312 may be coupled with the horizontal plate 110 in one side opposite to the upper surface 311, the lower side in the illustrated embodiment. The side surface 312 may be coupled to the horizontal plate 110 at a predetermined angle. In one embodiment, the predetermined angle may be a right angle.

A plurality of side surfaces 312 may be provided. In the illustrated embodiment, two side surfaces 312 are provided and spaced apart from each other in the thickness direction, that is, in the left and right directions.

A blocking plate 340 may be coupled to an outer side of any one of the plurality of side surfaces 312 . In the illustrated embodiment, the blocking plate 340 is coupled to the side 312 located on the right side. In this embodiment, the blocking plate 340 is located adjacent to the front side end of the side 312 located on the right side.

The inclined surface 320 guides the circuit breaker 20 coupled to the casing 10 from the lower side. The circuit breaker 20 slides along the inclined surface 320 and can easily enter the rail unit 310 .

Specifically, the insertion protrusion 815 of the movement limiting unit 800 may be seated on the inclined surface 320 and moved forward and backward. In this case, the inclined surface 320 and the insertion protrusion 815 may remain in contact with each other. Also, as will be described later, the insertion protrusion 815 is elastically supported by the elevating spring 816 .

Accordingly, the insertion protrusion 815 can be moved toward the rear side while being in contact with the inclined surface 320 while pressing the elevating spring 816 . Also, when the circuit breaker 20 is moved forward, the insertion protrusion 815 is pressed downward (ie, in a direction toward the inclined surface 320) by the elevating spring 816 and moved downward.

That is, the insertion protrusion 815 remains in contact with the inclined surface 320 and can be moved forward and backward.

The inclined surface 320 is spaced apart from the upper surface 311 of the rail unit 310 . In the illustrated embodiment, the inclined surface 320 is spaced apart from one end of the upper surface 311 in the extension direction, that is, the front side end. The opening formed by separating the inclined surface 320 and the one end of the upper surface 311 may be defined as a first groove part 331 .

The inclined surface 320 is continuous with the side surface 312 of the rail unit 310 . In one embodiment, the inclined surface 320 may be coupled to each end in the width direction, each end in the left and right direction in the illustrated embodiment with the side surface 312, respectively.

In other words, the inclined surface 320 is positioned between the plurality of side surfaces 312 and coupled with the plurality of side surfaces 312 , respectively.

The inclined surface 320 is formed to obliquely extend toward the horizontal plate 110 . Specifically, the inclined surface 320 is formed extending obliquely downward toward the front side from the front side end of the upper surface 311 .

In other words, the inclined surface 320 extends at a predetermined angle with the upper surface 311 . In one embodiment, the predetermined angle may be an obtuse angle.

Therefore, the inclined surface 320 has one side in its extending direction, the height of the front side in the illustrated embodiment (that is, the distance from the horizontal plate 110) is formed lower than the height of the rear side.

Accordingly, the height of the insertion protrusion 815 moving in contact with the inclined surface 320 increases toward the direction in which the circuit breaker 20 is coupled to the casing 10 (ie, the rear side).

In addition, it will be understood that the height of the insertion protrusion 815 decreases in the direction in which the circuit breaker 20 is separated from the casing 10 (ie, the front side).

The inclined surface 320 extends in the same direction as the upper surface 311, in the front-rear direction in the illustrated embodiment, and is provided in a rectangular plate shape having a width in the left-right direction. The shape of the inclined surface 320 may be changed to any shape capable of guiding the insertion protrusion 815 of the circuit breaker 20 from the lower side.

The insertion protrusion 815 of the circuit breaker 20 is inserted into or taken out of the hooking groove 330 . The insertion protrusion 815 inserted into the engaging groove 330 is not arbitrarily withdrawn unless an external force is applied.

Thus, the circuit breaker 20 can be maintained at a position where the insertion protrusion 815 is inserted into the hooking groove 330 . As a result, random movement of the circuit breaker 20 is prevented, so that the operational reliability and durability of the circuit breaker assembly 1 can be improved.

Insertion of the insertion protrusion 815 may be achieved by a restoring force stored by the elevating spring 816 while being pressed. Also, withdrawal of the insertion protrusion 815 may be achieved by manipulating the manipulation handle 740 provided in the cart 700 . A detailed description thereof will be described later.

The hooking groove 330 is located on one side of the rail part 310 opposite to the base 100, on the upper side in the illustrated embodiment. The one side of the hooking groove 330, the upper side in the illustrated embodiment, is formed open and communicates with the space formed inside the rail unit 310.

In an embodiment in which a separate space is not formed inside the rail unit 310, the locking groove 330 may be recessed in the upper surface 311.

In the illustrated embodiment, the locking groove 330 has a rectangular shape extending in the front-back and left-right directions. In addition, the locking groove 330 is recessed by a predetermined depth toward the lower side in the direction toward the horizontal plate 110, in the illustrated embodiment.

The shape of the hooking groove 330 may be any shape into which the insertion protrusion 815 can be inserted and withdrawn.

A plurality of hooking grooves 330 may be provided. A plurality of locking grooves 330 may be spaced apart from each other in the direction in which the upper surface 311 extends, in the illustrated embodiment, in the front and rear directions.

In the illustrated embodiment, two hooking grooves 330 are provided, including a first groove 331 and a second groove 332 . The first groove part 331 is located on the relatively front side compared to the second groove part 332 .

Accordingly, it will be appreciated that the insertion protrusion 815 may be first inserted into the first groove portion 331 as the circuit breaker 20 coupled to the rail portion 310 moves toward the vertical portion 200 .

Meanwhile, as the blocker 20 is moved, the insertion protrusion 815 may be positioned at at least four different points.

Specifically, as the blocker 20 is inserted, the insertion protrusion 815 may be positioned between the inclined surface 320 and the first groove 331 . Also, when the circuit breaker 20 moves, the insertion protrusion 815 may be inserted into the first groove 331 .

The insertion protrusion 815 drawn out from the first groove portion 331 after the manipulation process is performed may be positioned between the first groove portion 331 and the second groove portion 332 according to the movement of the blocker 20 . Furthermore, when the movement of the blocker 20 is further progressed, the insertion protrusion 815 may be inserted into the second groove portion 332 .

At this time, at a position where the insertion protrusion 815 is inserted into the first groove portion 331, the circuit breaker 20 may be operated in a test mode. Thus, the position where the insertion protrusion 815 is inserted into the first groove 331 may be defined as a test position.

In addition, at a position where the insertion protrusion 815 is inserted into the second groove portion 332, the circuit breaker 20 may be operated in a service mode. Thus, the position where the insertion protrusion 815 is inserted into the second groove 332 may be defined as a service position.

In particular, when the insertion protrusion 815 is moved between the first groove portion 331 and the second groove portion 332, the circuit breaker 20 according to the embodiment of the present invention can prevent any separation of the coupled jack. there is. This is achieved by the movement limiting unit 800 to be described later, and a detailed description thereof will be described later.

The blocking plate 340 constrains the circuit breaker 20 so as to be movable in a direction in which it is withdrawn from the casing 10 only after a predetermined manipulation process is performed. Specifically, the blocking plate 340 comes into contact with or is separated from the limiting plate 820 of the movement limiting unit 800 by the predetermined manipulation process.

When the blocking plate 340 and the limiting plate 820 come into contact with each other, the blocker 20 is not moved in the direction in which it is withdrawn from the casing 10, that is, in the illustrated embodiment, toward the front side.

Also, when the blocking plate 340 is spaced apart from the limiting plate 820, the blocker 20 can be moved to the front side and taken out of the casing 10.

Contact and separation between the blocking plate 340 and the limiting plate 820 can be achieved by manipulating the manipulation handle 740 , the rotary link 850 , and the vertical link 860 of the cart 700 . A detailed description thereof will be described later.

The blocking plate 340 extends in the same direction as the rail unit 310, in the fore-and-aft direction in the illustrated embodiment. The blocking plate 340 may be provided in a plate shape that extends long in the extension direction, that is, in the forward and backward directions, has a width in the vertical direction, and has a thickness in the left and right directions.

That is, the blocking plate 340 may be formed in a plate shape similar to the side surface 312 of the rail unit 310 .

The blocking plate 340 is positioned adjacent to the rail unit 310 . Also, the blocking plate 340 may be positioned between the rail unit 310 and the guide unit 250 .

In the illustrated embodiment, the blocking plate 340 is coupled to the side 312 of the side 312 of the rail unit 310 located in the direction toward the guide unit 250 (ie, the right side). The location of the blocking plate 340 may be changed according to the location of the limiting plate 820 of the movement limiting unit 800 .

In the illustrated embodiment, the blocking plate 340 includes a blocking extension 341 and a blocking protrusion 342 .

The blocking extension 341 forms the body of the blocking plate 340 . The blocking extension part 341 extends in the direction in which the rail part 310 extends, in the illustrated embodiment, in the forward and backward directions.

The extension length of the blocking extension part 341 may be the same as the extension length of the side surface 312 of the rail part 310 .

The blocking extension 341 is formed to have a predetermined height, that is, a length in the vertical direction in the illustrated embodiment. The height of the blocking extension part 341 may be defined as the first length l1.

In this case, the first length l1 of the blocking extension part 341 may be shorter than the first height h1 of the rail part 310 . In addition, the first length l1 of the blocking extension part 341 may be shorter than the second length l2 of the blocking protrusion 342 .

In other words, the height of the upper end of the blocking extension 341 is lower than the height of the upper end of the blocking protrusion 342 .

Accordingly, the blocking extension 341 is located below the holding protrusion 828 of the limiting plate 820 and spaced apart from the limiting plate 820 . As will be described later, the locking protrusion 828 is located at the lowermost side of the limiting plate 820 . Accordingly, it will be appreciated that the blocking extension 341 does not contact the limiting plate 820 .

That is, the movement of the circuit breaker 20 may be limited by contact between the blocking protrusion 342 and the locking protrusion 828 .

The blocking protrusion 342 contacts or is separated from the limiting plate 820 to allow or limit the sliding movement of the limiting plate 820 and the blocker 20 included therein. Specifically, the blocking protrusion 342 limits the movement of the circuit breaker 20 toward the direction in which the circuit breaker 20 is withdrawn from the casing 10, the front side in the illustrated embodiment.

The blocking protrusion 342 is located at one end in the direction in which the blocking extension 341 extends. In the illustrated embodiment, the blocking protrusion 342 is located at the front side end of the blocking extension 341 . The blocking protrusion 342 is continuous with the end of the blocking extension 341 .

The blocking protrusion 342 may extend in the forward and backward directions in the direction in which the blocking extension 341 extends, in the illustrated embodiment. In addition, the blocking protrusion 342 is formed to have a predetermined height, a length in the vertical direction in the illustrated embodiment. The height of the blocking protrusion 342 may be defined as the second length l2.

In this case, the second length l2 of the blocking protrusion 342 may be equal to or less than the first height h1 of the rail unit 310 . Also, the second length l2 of the blocking protrusion 342 may be longer than the first length l1 of the blocking extension 341 .

In other words, the height of the upper end of the blocking protrusion 342 is higher than that of the upper end of the blocking extension 341 .

Therefore, when the circuit breaker 20 is moved in the direction in which the circuit breaker 20 is withdrawn from the casing 10, in the illustrated embodiment, in a state where the limiting plate 820 is disposed at a specific position, the locking protrusion 828 of the limiting plate 820 is in contact with the blocking protrusion 342. Accordingly, the movement of the circuit breaker 20 can be limited.

As will be described later, the movement of the blocking plate 340 is interlocked with the operation of the mechanism structure 400 and the movement limiting unit 800 . That is, the movement of the blocking plate 340 is operated in communication with whether or not the jack is coupled to the connector 410 . As a result, whether the circuit breaker 20 can be withdrawn depends on whether the connector 410 and the jack are coupled.

As will be described later, when the jack is coupled to the connector 410, the blocking plate 340 is disposed at a position in contact with the limiting plate 820. Therefore, in a state where the jack is coupled to the connector 410, the circuit breaker 20 is not separated from the casing 10 at will.

As a result, the operational reliability of the circuit breaker 20 can be improved, and the safety of operation can be improved. A detailed description of a specific process in which the slide movement of the blocker 20 is limited and permitted will be described later.

(2) Description of the configuration of the circuit breaker 20

10 to 24, a circuit breaker assembly 1 according to an embodiment of the present invention includes a circuit breaker 20.

The circuit breaker 20 is energized and connected to an external control power source, power source or load. The circuit breaker 20 is operated by an external control power source, and allows or blocks energization between the power source and the load.

Accordingly, malfunction and damage to the load energized and connected to the circuit breaker 20 can be prevented.

The circuit breaker 20 is accommodated inside the casing 10 . Specifically, the circuit breaker 20 is accommodated in the receiving space 130 of the base 100 . The circuit breaker 20 accommodated inside the casing 10 may be partially surrounded by the vertical portion 200 .

The circuit breaker 20 is energized and connected to an external control power source through the jack.

The circuit breaker 20 may slide in a direction toward the vertical portion 200 or in a direction opposite to the vertical portion 200 inside the casing 10 . That is, the circuit breaker 20 can be moved to the front side or the rear side in the illustrated embodiment.

To this end, the circuit breaker 20 is connected to the guide rail 240, the guide part 250, and the circuit breaker coupling part 300 to be slidably movable, respectively.

In addition, the slide movement of the circuit breaker 20 according to an embodiment of the present invention may be allowed or restricted depending on whether the jack is coupled. Accordingly, any disconnection of the jack coupled to the circuit breaker 20 can be prevented, and burnout of the circuit breaker 20 and the load can be prevented.

In the illustrated embodiment, the circuit breaker 20 has a rectangular cross section and a rectangular column shape with a predetermined height. The shape of the circuit breaker 20 may be changed according to the shape of the casing 10 and the surrounding environment in which the circuit breaker assembly 1 is to be provided.

A part of the outer shape of the circuit breaker 20 may be formed by a housing (reference numeral not indicated). The housing (reference numeral not indicated) may be formed of an insulating material. This is to prevent the circuit breaker 20 from being arbitrarily energized with an external control power source, power source, or load.

In the illustrated embodiment, the blocker 20 includes a mechanism structure 400, a blocking portion 500, a terminal portion 600, a cart portion 700, and a movement limiting portion 800.

Hereinafter, each component of the circuit breaker 20 will be described in detail with reference to the accompanying drawings, but the cart unit 700 and the movement limiting unit 800 will be described separately.

The mechanism structure 400 is operated by an external control power source to operate the circuit breaker 20 in a closed state or a tripped state.

The mechanism structure 400 is electrically connected to an external control power source. The connection may be achieved by detachably coupling the jack to a connector 410 to be described later.

The mechanism structure 400 is accommodated inside the housing (reference numeral not indicated) of the circuit breaker 20 .

At this time, some components of the mechanism structure 400 may be partially exposed to the outside of the housing (reference numeral not indicated). In the illustrated embodiment, the connector 410 is exposed on the upper side of the housing (reference numeral not shown), and the jack can be detachably coupled.

In the illustrated embodiment, the mechanism structure 400 includes a connector 410, a connector fastening portion 420, a frame 430, a mechanism 440 and an elevating frame 450.

The connector 410 is a part where the mechanism 440 of the mechanism structure 400 is energized and connected to an external control power source. A control signal for operating the mechanism 440 may be input through the connector 410 .

The jack is detachably coupled to the connector 410 . At this time, when the jack is coupled or disconnected, the connector fastening part 420 provided on the outside of the connector 410 and the elevating frame 450 connected thereto operate.

The movement limiting unit 800 is operated in conjunction with the above operation so that the circuit breaker 20 can slide in a direction toward the vertical part 200 or in a direction opposite to the vertical part 200 . A detailed description thereof will be described later.

The connector 410 is located on one side of the mechanism structure 400 opposite the base 100, in the illustrated embodiment the upper side. The connector 410 may be exposed to the upper side of the housing (reference numeral not indicated) and the frame 430 . The connector 410 is coupled through an opening formed through the horizontal frame 431 .

The connector 410 is coupled to the elevating frame 450 . The connector 410 may be moved up and down together with the elevating frame 450 depending on whether or not the jack is coupled.

The connector 410 is through-coupled to the frame 430 . Specifically, the connector 410 is coupled through an opening formed through the horizontal frame 431 of the frame 430 .

A connector fastening part 420 is provided on the outside of the connector 410 .

The connector fastening part 420 maintains the connection between the connector 410 and the jack. When the connector 410 and the jack are coupled, the connector 410 and the jack are not arbitrarily separated unless the connector fastening part 420 is separately manipulated.

The connector fastening part 420 is located outside the connector 410 . In the illustrated embodiment, the connector fastening part 420 is located on the upper side of the mechanism structure 400, and is positioned to surround the front side, rear side, left side and right side of the connector 410.

The connector fastening part 420 is through-coupled to the frame 430 . Specifically, the connector fastening part 420 is coupled through an opening formed through the horizontal frame 431 of the frame 430 .

The connector fastening part 420 is connected to the elevating frame 450 . The connector fastening part 420 may be lifted together with the lift frame 450 .

When the jack is coupled to the connector 410, the connector fastening part 420 presses the elevating frame 450. Accordingly, the vertical link unit 860 of the movement limiting unit 800 connected to the elevating frame 450 and the limiting plate 820 connected thereto may be moved.

When the connector 410 and the jack are separated, the connector fastening part 420 is raised together with the elevating frame 450 . Accordingly, the vertical link unit 860 of the movement limiting unit 800 connected to the elevating frame 450 and the limiting plate 820 connected thereto may be moved.

At this time, it will be understood that the moving directions of the vertical link unit 860 and the limiting plate 820 according to each case will be opposite to each other.

As a result, the restriction plate 820 and the blocking plate 340 contact each other depending on whether or not the connector 410 is coupled, so that the withdrawal of the circuit breaker 20 is restricted, or the restriction plate 820 and the blocking plate 340 are spaced apart. Withdrawal of the circuit breaker 20 may be allowed.

The connector fastening part 420 may be exposed to the upper side of the housing (reference numeral not indicated) and the frame 430 . The connector fastening part 420 is coupled through an opening formed through the horizontal frame 431 .

In the illustrated embodiment, the connector fastening part 420 includes a side plate 421 and a hanging bar 422 .

The side plates 421 are located on both sides of the connector 410, in the left and right directions in the illustrated embodiment. The side plate 421 supports the hanging bar 422 movably.

A plurality of side plates 421 may be provided. The plurality of side plates 421 may be spaced apart from each other and disposed to face each other. In the illustrated embodiment, two side plates 421 are provided and disposed on the left and right sides, respectively, with the connector 410 interposed therebetween.

The side plate 421 is coupled to the elevating frame 450 . The side plate 421 may be moved up and down together with the lift frame 450 .

The side plate 421 is through-coupled to the horizontal frame 431 . Specifically, the side plate 421 is coupled through an opening formed through the horizontal frame 431 .

In the illustrated embodiment, the side plate 421 is formed in a plate shape in which the extension length in the vertical direction is longer than the extension length in the front-back direction. The shape of the side plate 421 may be any shape capable of supporting the hanging bar 422 in a sliding manner.

The side plate 421 is provided with a fastening hole 421a.

A locking bar 422 is movably inserted into and coupled to the fastening hole 421a. That is, the hanging bar 422 is coupled to the side plate 421 so as to slide along the fastening hole 421a.

The fastening hole 421a may extend in a direction in which the hanging bar 422 rotates. In the illustrated embodiment, the fastening hole 421a is formed in an arc shape with its center located at the lower side.

Therefore, the hanging bar 422 coupled thereto may also be rotated clockwise or counterclockwise by the circular arc shape.

The locking bar 422 is movably coupled to the side plate 421 and binds or releases the jack coupled to the connector 410 .

The hanging bar 422 may be divided into a plurality of parts. That is, the hanging bar 422 may be divided into a first part manipulated by a worker and a second part connected to each end of the first part and slidably coupled to the fastening hole 421a.

The second part may be formed in a direction opposite to the frame 430, an upper end in a hook shape in the illustrated embodiment. Therefore, the jack coupled to the connector 410 is constrained by the hook shape, so that a coupled state with the connector 410 can be stably maintained.

The first portion forms the front side of the hanging bar 422, and extends in a direction in which the plurality of side plates 421 are spaced apart from each other, in the left and right directions in the illustrated embodiment. The second part is located at each end in each direction in which the first part extends, and at each end of the left and right sides in the illustrated embodiment. The second part is slidably coupled to each of the plurality of side plates 421 .

At this time, each end of the first part and the second part may be linked to each other. Accordingly, the rotational direction of the first part and the rotational direction of the second part may be opposite to each other.

In addition, each end of the first part and the second part may be elastically coupled by an elastic member (not shown). The elastic member (not shown) may provide restoring force so that the locking bar 422 is maintained in a position restraining the jack.

That is, in the embodiment shown in FIG. 10 , the first part of the hanging bar 422 is pressed downward, and the second part of the hanging bar 422 is rotated rearward. In this state, the elastic member (not shown) is pressed and stores a restoring force.

In addition, in the embodiment shown in FIG. 10, since the hook portion of the second portion is located adjacent to the rear side end of the fastening hole 421a, it will be understood that the jack can be coupled to the connector 410. will be.

Although not shown, when the force applied to the first portion of the hanging bar 422 is released, the elastic member (not shown) is restored to its original shape. At this time, by the elastic member (not shown), the first portion of the hanging bar 422 is rotated upward, and the second portion is rotated forward.

Accordingly, it will be appreciated that in this state, since the hook portion of the second portion is positioned adjacent to the front side end of the fastening hole 421a, the jack remains coupled to the connector 410.

The elastic member (not shown) may be provided in any form capable of being deformed to store a restoring force and transmitting the stored restoring force to another member. In one embodiment, the elastic member (not shown) may be provided as a torsion spring.

Therefore, when the jack is coupled to the connector 410, any separation between the connector 410 and the jack can be prevented by the hanging bar 422.

Frame 430 forms the remaining portion of the outer contour of mechanism structure 400 . In the illustrated embodiment, the frame 430 forms the top, left, right and rear sides of the contour of the mechanism structure 400 .

The other components of the mechanism structure 400 and the movement limiting unit 800 are coupled to the frame 430 . Specifically, the connector 410, the connector fastening part 420, and the elevating frame 450 are coupled to the frame 430. In addition, a vertical link unit 860 is coupled to the frame 430 so as to be able to move up and down.

A space is formed inside the frame 430 . Other components of the mechanism structure 400 and the movement limiting unit 800 are accommodated in the space. Specifically, the mechanism 440 and the vertical link unit 860 are accommodated in the space formed inside the frame 430 .

In the illustrated embodiment, the frame 430 includes a horizontal frame 431, a vertical frame 432, a rear frame 433 and a bracket 434.

Horizontal frame 431 forms one side of frame 430, the upper side in the illustrated embodiment.

An opening is formed through the inside of the horizontal frame 431 . The connector 410 and the connector fastening part 420 may pass through the opening. Accordingly, the connector 410 and the connector fastening part 420 may be exposed to the upper side of the frame 430 .

In the illustrated embodiment, the horizontal frame 431 is formed in a rectangular plate shape in which an extension length in the left and right directions is longer than an extension length in the front and rear directions. Each corner of the horizontal frame 431 in the left and right directions is continuous with the vertical frame 432 . The edge of the rear side of the horizontal frame 431 is continuous with the rear frame 433.

The horizontal frame 431 is coupled with the elevating frame 450 . Specifically, the elevating frame 450 may be coupled to the horizontal frame 431 so as to be elevating relative to the horizontal frame 431 .

Vertical frame 432 forms the other side of frame 430, left and right in the illustrated embodiment.

The vertical frame 432 is continuous with the horizontal frame 431 . In the illustrated embodiment, the upper corner of the vertical frame 432 is continuous with each corner of the horizontal frame 431 in the left and right directions.

The vertical frame 432 is continuous with the rear frame 433 . In the illustrated embodiment, the rear edge of the vertical frame 432 is continuous with each edge of the rear frame 433 in the left and right directions.

The vertical frame 432 supports the elevating frame 450 to be elevating. The elevating frame 450 may be elevated in a vertical direction while being coupled to the vertical frame 432 .

A plurality of vertical frames 432 may be provided. The plurality of vertical frames 432 may face each other with a space formed inside the frame 430 and a mechanism 440 accommodated in the space interposed therebetween.

In the illustrated embodiment, two vertical frames 432 are provided, forming the left and right sides of the frame 430, respectively.

Rear frame 433 forms the other side of frame 430, the rear side in the illustrated embodiment.

The rear frame 433 is continuous with the horizontal frame 431 . In the illustrated embodiment, the upper edge of the rear frame 433 is continuous with the rear edge of the horizontal frame 431 .

The rear frame 433 is continuous with the vertical frame 432 . In the illustrated embodiment, each corner of the left and right directions of the rear frame 433 is continuous with the front side corner of the vertical frame 432, respectively.

Accordingly, a space surrounded by the horizontal frame 431 , the vertical frame 432 , and the rear frame 433 is formed inside the frame 430 .

A bracket 434 is coupled to the rear frame 433.

The bracket 434 supports the vertical link unit 860 of the movement limiting unit 800 so as to be able to move up and down. The bracket 434 is accommodated in a space formed inside the frame 430 and is coupled to the rear frame 433 .

A portion of the bracket 434 may be spaced apart from the rear frame 433 . The vertical extension part 861 of the vertical link part 860 may pass through a space formed by separating the part of the bracket 434 from the rear frame 433 so as to be able to move up and down.

The elevating frame 450 moves up and down depending on whether the connector 410 and the jack are engaged.

Specifically, when the connector 410 and the jack are engaged, the elevating frame 450 descends downward. In addition, when the connector 410 and the jack are separated, the elevating frame 450 is raised upward.

The mechanism 440 is operated by receiving a control signal from an external control power source. As mechanism 440 is actuated, circuit breaker 20 may be operated in a closed or tripped state.

The mechanism 440 is accommodated in a space formed inside the frame 430 . The mechanism 440 is electrically connected to the connector 410 . A control signal may be transmitted to the mechanism 440 through the connector 410 connected to the jack.

Since the process of operating the mechanism 440 and thus the process of operating the circuit breaker 20 in a closed state or a tripped state are well-known techniques, detailed descriptions thereof will be omitted.

In one embodiment, the mechanism 440 may elastically support the elevating frame 450 .

The elevating frame 450 is movably coupled to the horizontal frame 431 . The elevating frame 450 may be elevated in a direction toward the horizontal frame 431 or in a direction opposite to the horizontal frame 431 .

The elevating frame 450 is movably coupled to the vertical frame 432 . The elevating frame 450 may be moved up and down in a state in which each end of the extension direction, in the left and right direction in the illustrated embodiment, is coupled to the vertical frame 432 .

The elevating frame 450 is connected to the connector 410 and the connector fastening part 420 . The elevating frame 450 descends together with the connector 410 and the connector fastening part 420 as the jack is coupled to the connector 410 and pressurized. In addition, the elevating frame 450 rises together with the connector 410 and the connector fastening part 420 as the connector 410 and the jack are separated.

The elevating frame 450 is connected to the vertical link unit 860 of the movement limiting unit 800 . Specifically, the elevating frame 450 is coupled to the head portion 862 of the vertical link portion 860, and may be elevated together.

The elevating frame 450 is elastically supported by the vertical link part 860 of the movement limiting part 800 . Specifically, the elevating frame 450 is elastically supported by the return spring 864 of the vertical link unit 860 .

When the jack is separated from the connector 410, the elevating frame 450 may be raised to its original position by a restoring force provided by the return spring 864.

A detailed description of a process in which the elevating frame 450 is elevated as the jack is coupled or separated from the connector 410 will be described later.

In the illustrated embodiment, the elevating frame 450 has a plate shape in which an extension length in the left and right directions is longer than an extension length in the front and rear directions and has a thickness in the vertical direction. The elevating frame 450 is coupled to the horizontal frame 431 so as to be elevating, and may have an arbitrary shape capable of elevating together with the connector 410 and the connector fastening part 420 .

When the circuit breaker 20 is operated in the closed state, the circuit breaker 500 connects the circuit breaker 20 with an external power supply or load so as to be energized. In addition, when the circuit breaker 20 is operated in a tripped state, the blocking unit 500 cuts off energization between the circuit breaker 20 and an external power source or load.

Blocking unit 500 is coupled with mechanism 440 . When the mechanism 440 is rotated, the blocking unit 500 connected thereto is also operated so that the fixed contact (not shown) and the movable contact (not shown) are separated from each other.

Accordingly, the cut-off unit 500 may be cut off from being energized with an external power source or load.

The blocking unit 500 is energized and connected to an external power source or load. The connection is achieved by the terminal unit 600 energized to the blocking unit 500 . The blocking unit 500 is electrically connected to the terminal unit 600 .

A plurality of blocking units 500 may be provided. The plurality of blocking units 500 are physically and electrically separated from each other so that currents of different phases can be conducted. In the illustrated embodiment, three blocking units 500 are provided, including a first blocking unit 510 , a second blocking unit 520 and a third blocking unit 530 .

The plurality of blocking parts 500 are connected to the plurality of terminal parts 600 to be energized, respectively. In the illustrated embodiment, the first to third blocking portions 510, 520, and 530 are electrically connected to the first to third terminal portions 610, 620, and 630, respectively.

The terminal unit 600 is electrically connected to an external power source or load. In addition, the terminal unit 600 is electrically connected to the blocking unit 500 .

A plurality of terminal units 600 may be provided. The plurality of terminal units 600 are physically and electrically separated from each other so that currents of different phases can be conducted. In the illustrated embodiment, three terminal units 600 are provided including a first terminal unit 610 , a second terminal unit 620 and a third terminal unit 630 .

The plurality of terminal units 600 are connected to the plurality of blocking units 500 to be energized, respectively, as described above.

This is due to the fact that the current flowing through the circuit breaker 20 according to the embodiment of the present invention is three-phase. Accordingly, it will be understood that the number of blocking parts 500 and the number of terminal parts 600 can be changed according to the phase of current being conducted.

In this case, each of the first to third terminal units 610, 620, and 630 may be provided in plurality. In the illustrated embodiment, each of the first to third terminal units 610, 620, and 630 is provided with two, spaced apart from each other in the vertical direction, and coupled to the first to third blocking units 510, 520, and 530, respectively. .

Either one of the two first to third terminal portions 610 , 620 , and 630 is energized with an external power supply, and an external load is energized with the other one of the two first to third terminal portions 610 , 620 , and 630 respectively. It will be appreciated that possibly connected.

3. Description of the configuration of the cart unit 700 according to the embodiment of the present invention

Referring back to FIGS. 10 to 19 and 21 to 24 , the circuit breaker 20 according to an embodiment of the present invention includes a cart unit 700 .

The cart unit 700 supports each component provided in the circuit breaker 20 from the lower side. Each component provided in the circuit breaker 20 may be seated or coupled to the cart unit 700 .

The cart unit 700 is coupled to the casing 10 . Specifically, the cart unit 700 is slidably coupled to the guide rail 240, the guide unit 250, and the circuit breaker coupling unit 300. The cart unit 700 may be slid in a direction in which the circuit breaker 20 is inserted and withdrawn while being coupled to the casing 10, in the illustrated embodiment, toward the front side or the rear side.

In particular, the cart unit 700 according to an embodiment of the present invention, along with the movement limiting unit 800 to be described later, may slide or be restricted in movement depending on whether the connector 410 is coupled to the jack.

Hereinafter, a cart unit 700 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the illustrated embodiment, the cart portion 700 includes a body portion 710, a wheel portion 720, an insertion guide portion 730, and a manipulation handle portion 740.

The body portion 710 forms the lower body of the cart portion 700 . The body portion 710 is combined with other components of the cart portion 700, the wheel portion 720, the insertion guide portion 730, and the manipulation handle portion 740 in the illustrated embodiment.

In addition, the body portion 710 may be combined with other components provided in the circuit breaker 20 . In the illustrated embodiment, the body portion 710 is coupled to the mechanism structure 400, the blocking portion 500, the terminal portion 600, and the movement limiting portion 800 to support them.

In the illustrated embodiment, the body portion 710 extends in front and rear directions and left and right directions, and is provided in a rectangular plate shape having a thickness in the vertical direction. The shape of the body portion 710 may be changed to any shape capable of performing the above-described functions.

A wheel unit 720 is rotatably coupled to each corner of the left and right directions in any one of the extending directions of the body portion 710, in the illustrated embodiment.

In addition, the insertion guide part 730 and the manipulation handle part 740 are coupled to the front edge of the other one of the extension directions of the body part 710, in the illustrated embodiment. In particular, the manipulation handle unit 740 is coupled to the corner so as to be able to move up and down.

One side of the body part 710 opposite to the mechanism structure 400, in the illustrated embodiment, the movement limiting part 800 is accommodated and coupled to the lower side of the body part 710.

In the illustrated embodiment, the body portion 710 includes a first support plate 711 and a second support plate 712 .

The first support plate 711 is coupled to one corner of the body 710, the front side in the illustrated embodiment. The first support plate 711 forms a part in the vertical direction of the one side of the body portion 710 . In the illustrated embodiment, the first support plate 711 forms the front left side of the body portion 710 .

The first support plate 711 extends at a predetermined angle with the horizontal plane of the body 710 . In one embodiment, the first support plate 711 may extend perpendicularly to the horizontal surface portion of the body portion 710 .

The first support plate 711 extends downward in a direction opposite to the mechanism structure 400, in the illustrated embodiment. At this time, it is preferable that the lower end of the first support plate 711 extends so as to be positioned above the portion where the wheel portion 720 contacts the ground or the floor.

In other words, the lower end of the first support plate 711 is not in contact with the ground or floor surface.

The first support plate 711 extends in one of the directions in which the horizontal plane portion of the body 710 extends, in the left and right directions in the illustrated embodiment. That is, the first support plate 711 is a plate shape having a length in a left-right direction, a width in a vertical direction, and a thickness in a front-back direction.

The extended length of the first support plate 711, that is, the length in the left-right direction, may be shorter than the length of the horizontal surface of the body portion 710 in the left-right direction. In addition to the first support plate 711, the second support plate 712 and the insertion guide part 730 are provided at the front edge of the horizontal surface portion of the body part 710.

The first support plate 711 is disposed parallel to the second support plate 712 in the extension direction, left and right direction in the illustrated embodiment, with the insertion guide part 730 interposed therebetween. In one embodiment, the first support plate 711 may be formed and disposed symmetrically with the second support plate 712 with respect to the insertion guide part 730 .

One side of the first support plate 711 facing the base 100 of the casing 10, in the illustrated embodiment, a groove is formed on the lower side. The groove may be formed to have a higher position than the circuit breaker coupling part 300 .

Therefore, when the circuit breaker 20 moves in the forward and backward directions, the first support plate 711 and the circuit breaker coupling part 300 do not come into contact.

The first support plate 711 is spaced apart from the second support plate 712 and its extension direction, in the left-right direction in the illustrated embodiment. An insertion guide part 730 is positioned between the first support plate 711 and the second support plate 712 .

A first support groove 711a and a second guide groove 711b are formed inside the first support plate 711 (best shown in FIG. 12).

The pressure pin 856 of the rotation link unit 850 is movably coupled to the first guide groove 711a.

The first guide groove 711a is formed through the thickness direction of the first support plate 711, in the forward and backward directions in the illustrated embodiment. In addition, the first guide groove 711a extends in the direction in which the rotary link unit 850 moves, in the left and right directions in the illustrated embodiment.

At this time, the pressure pin 856 is moved in an arc as the rotary link unit 850 is operated. Accordingly, the first guide groove 711a may be formed in an arc shape with its center located on the upper side and having a central angle of a predetermined size.

In addition, the length of extension of the first guide groove 711a may be determined according to the distance at which the limiting plate 820 connected thereto moves in contact with and away from the blocking plate 340 as the rotary link unit 850 operates.

That is, the first guide groove 711a may extend by a distance between a position where the locking protrusion 828 of the limiting plate 820 contacts the blocking protrusion 342 of the blocking plate 340 and a position where it is spaced apart.

In the illustrated embodiment, the first guide groove 711a is located on the right side of the first support plate 711 . In addition, the first support plate 711 is located below the second connection part 855 of the rotary link part 850 .

A second guide groove 711b is formed on the left side of the first guide groove 711a.

The manipulation handle part 740 is movably coupled through the second guide groove 711b.

The second guide groove 711b is formed through the thickness direction of the first support plate 711, in the front-rear direction in the illustrated embodiment. In addition, the second guide groove 711b extends in the direction in which the manipulation handle 740 moves, in the illustrated embodiment, in the vertical direction.

As will be described later, the manipulation handle unit 740 is connected to the elevation unit 810 . As the operation handle unit 740 is operated up and down, the insertion protrusion 815 may be inserted into or withdrawn from the hooking groove 330 .

In the illustrated embodiment, the second guide groove 711b is located adjacent to the central portion of the first support plate 711 . In addition, the second guide groove 711b is located on the left side of the first guide groove 711a and spaced apart from the first guide groove 711a.

The second guide groove 711b extends vertically by a predetermined length. In this case, the extension length of the second guide groove 711b may be determined according to the distance that the insertion protrusion 815 should be moved upward to be completely drawn into the hooking groove 330 .

The second guide groove 711b may be partially covered by the limiting plate 820 . In the illustrated embodiment, when the limiting plate 820 is moved to the left, the upper side of the second guide groove 711b is partially covered.

In this situation, the operation handle portion 740 can only be moved between the lower end of the limiting plate 820 and the lower end of the second guide groove 711b.

Meanwhile, as described above, the circuit breaker coupling parts 300 may be formed at different heights along the extension direction. Therefore, in a state where the limiting plate 820 partially covers the second guide groove 711b, the manipulation handle 740 can be moved to a height at which the insertion protrusion 815 can be withdrawn from the first groove 331. can

Conversely, in the above state, the manipulation handle 740 cannot be moved to a height at which the insertion protrusion 815 can be withdrawn from the second groove 332 .

Therefore, in a state where the limiting plate 820 partially covers the second guide groove 711b, the circuit breaker 20 moves in the direction of being withdrawn from the casing 10 (ie, the front side) in the test position. It can be.

Similarly, with the limiting plate 820 partially covering the second guide groove 711b, the circuit breaker 20 cannot be moved from the service position.

As will be described later, considering that the limiting plate 820 partially covers the second guide groove 711b in a state in which the jack is separated from the connector 410, the circuit breaker 20 only covers the casing ( 10).

The second support plate 712 is located at the one corner of the body 710, the front side in the illustrated embodiment. The second support plate 712 forms the remaining part of the one side of the body portion 710 in the vertical direction. In the illustrated embodiment, the second support plate 712 forms the front right side of the body portion 710 .

The second support plate 712 extends at a predetermined angle with the horizontal plane of the body 710 . In one embodiment, the second support plate 712 may extend perpendicular to the horizontal surface portion of the body portion 710 .

The second support plate 712 extends downward in a direction opposite to the mechanism structure 400, in the illustrated embodiment. At this time, it is preferable that the lower end of the second support plate 712 extends above the portion where the wheel portion 720 contacts the ground or the floor.

In other words, the lower end of the second support plate 712 is not in contact with the ground or floor surface.

The second support plate 712 extends in one of the directions in which the horizontal plane portion of the body portion 710 extends, in the left and right directions in the illustrated embodiment. That is, the second support plate 712 is a plate shape having a length in a left-right direction, a width in a top-down direction, and a thickness in a front-back direction.

The extended length of the second support plate 712, that is, the length in the left-right direction, may be shorter than the length of the horizontal surface of the body portion 710 in the left-right direction.

The second support plate 712 is disposed parallel to the first support plate 711 in the extension direction, left and right direction in the illustrated embodiment, with the insertion guide part 730 interposed therebetween. In one embodiment, the second support plate 712 may be formed and disposed symmetrically with the first support plate 711 with respect to the insertion guide part 730 .

The wheel unit 720 is rotated so that the circuit breaker 20 can be slid in the direction in which the circuit breaker 20 is accommodated in the casing 10 or in the direction in which it is withdrawn from the casing 10, in the fore-and-aft direction in the illustrated embodiment.

The wheel unit 720 is rotatably coupled to the body unit 710 . The wheel unit 720 rotatably supports the body unit 710 and other components of the cart unit 700 .

The wheel unit 720 may be provided in any shape capable of moving the cart unit 700 by being rotated. In the illustrated embodiment, the wheel unit 720 is formed by stacking a plurality of discs.

A plurality of wheel units 720 may be provided. The plurality of wheel parts 720 may be rotatably coupled to the body part 710 at different positions. In the illustrated embodiment, four wheel units 720 are provided. Among them, a pair of wheel parts 720 are spaced apart from each other in the front-back direction of the left edge of the body part 710 . In addition, the other pair of wheel units 720 are spaced apart from each other in the front-back direction of the right edge of the body unit 710 .

The wheel unit 720 is rotatably coupled to the guide rail 240 . Specifically, the wheel unit 720 is formed inside the guide rail 240 and is accommodated in a space extending in an extending direction (ie, a front-back direction) of the guide rail 240 . The wheel unit 720 may rotate clockwise or counterclockwise in the space of the guide rail 240 .

As described above, a plurality of wheel units 720 are provided. In addition, a plurality of guide rails 240 are also provided. Thus, different pairs of wheel parts 720 rotatably coupled to different sides of the body 710 may be rotatably coupled to spaces formed inside different guide rails 240 .

The insertion guide part 730 is a part gripped by an operator when the cart part 700 is coupled to the casing 10 . The operator can control the cart unit 700 by gripping the insertion guide unit 730 and insert the circuit breaker 20 into the casing 10 through this.

The insertion guide part 730 is coupled to the body part 710 . Specifically, the insertion guide portion 730 is coupled to one side of the body portion 710 opposite to the mechanism structure 400, the lower side of the body portion 710 in the illustrated embodiment.

The insertion guide portion 730 extends in one direction among the directions in which the body portion 710 extends, in the front and rear directions in the illustrated embodiment. The insertion guide portion 730 has its upper side coupled to the lower side of the body portion 710, and one side in its extension direction, in the illustrated embodiment, may be exposed toward the front side of the body portion 710.

The end of the insertion guide portion 730 exposed to the outside of the body portion 710 may be provided with a bar that can be gripped by a user. That is, in the illustrated embodiment, the end portion of the insertion guide portion 730 includes two plate members coupled to the body portion 710 and disposed to face each other, and a bar extending between the two plate members.

The operator can easily control the movement of the cart unit 700 by gripping the bar.

The insertion guide part 730 may be positioned between the first support plate 711 and the second support plate 712 . In one embodiment, the insertion guide portion 730 may be spaced apart from the first support plate 711 and the second support plate 712 by the same distance along the left and right directions of the body portion 710 .

In other words, the insertion guide part 730 may be located in the middle of the body part 710 in the left and right direction.

The manipulation handle unit 740 is moved in a direction toward the mechanism structure 400 or in an opposite direction, up and down in the illustrated embodiment. The movement limiting unit 800 is operated by the manipulation of the manipulation handle unit 740, so that the movement of the cart unit 700 in the forward and backward directions may be allowed or restricted.

The manipulation handle part 740 is coupled to the first support plate 711 . Specifically, the manipulation handle portion 740 is coupled through the second guide groove 711b formed through the first support plate 711 .

The manipulation handle part 740 extends in any one direction among the directions in which the body part 710 extends, in the front-rear direction in the illustrated embodiment. The manipulation handle portion 740 is exposed to the front side of the body portion 710 at one side of its extension direction, the front side end in the illustrated embodiment. The operator can move the manipulation handle part 740 up and down by holding the front side end.

The manipulation handle portion 740 may be coupled with the insertion protrusion 815 of the lifting portion 810 at the rear end of the other side of the extending direction, in the illustrated embodiment. When the manipulation handle portion 740 is manipulated upward or downward, the insertion protrusion 815 is also moved upward or downward to be inserted into or withdrawn from the hooking groove 330 .

Therefore, the operator can restrict or permit the movement of the circuit breaker 20 by lifting and lowering the handle unit 740 .

The manipulation handle part 740 may be maintained at a position manipulated by an operator. Specifically, the manipulation handle unit 740 may be maintained at the position manipulated by the operator unless an additional external force is applied.

4. Description of the configuration of the movement limiting unit 800 according to the embodiment of the present invention

Referring back to FIGS. 10 to 24 , the circuit breaker 20 according to an embodiment of the present invention includes a movement limiting unit 800 .

The movement limiting unit 800 may allow or restrict movement of the circuit breaker 20 in a direction in which the circuit breaker 20 is accommodated in the casing 10 or in a direction in which it is withdrawn from the casing 10 by being manipulated by an operator.

The movement limiting unit 800 is coupled to the mechanism structure 400 and the cart unit 700 . In addition, the movement limiting unit 800 is coupled to the mechanism structure 400 and the cart unit 700 to be movable or rotatable in vertical, longitudinal, and left-right directions.

The movement limiting unit 800 is connected to the mechanism structure 400 . When the mechanism structure 400 is manipulated, the movement limiting unit 800 may be operated in conjunction with the manipulation.

The movement limiting unit 800 is connected to the cart unit 700 . When the cart unit 700 is manipulated, the movement limiting unit 800 may be operated in conjunction with the manipulation.

In particular, the movement limiting unit 800 according to an embodiment of the present invention may allow the movement of the circuit breaker 20 through at least two steps.

Therefore, compared to the case where the circuit breaker 20 is moved by a single step, the coupled state between the connector 410 and the jack can be stably maintained.

In addition, as the movement of the circuit breaker 20 is permitted through a plurality of steps, a situation in which the circuit breaker 20 is arbitrarily moved due to an operator's erroneous operation can be prevented.

Accordingly, the reliability and stability of the operation of the circuit breaker 20 and the operator's work can be improved. Furthermore, damage to the circuit breaker 20 due to an unexpected accident can be prevented.

Hereinafter, the movement limiting unit 800 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the illustrated embodiment, the movement limiting unit 800 includes a lifting unit 810, a limiting plate 820, a fastening member 840, a rotation link unit 850, and a vertical link unit 860.

The elevation unit 810 is elevated together with the elevation of the control handle unit 740 . As the lifting part 810 moves up and down, the insertion protrusion 815 is inserted into or pulled out of any one of the hooking grooves 330 .

That is, any one step among the plurality of steps described above is performed by the lifting unit 810 . Accordingly, the circuit breaker 20 can be slid in a direction in which the circuit breaker 20 is accommodated in the casing 10 or in a direction in which it is drawn out, that is, in the forward and backward directions.

The elevating unit 810 is coupled to the cart unit 700 . Specifically, the elevating unit 810 is coupled to one side of the body portion 710 opposite to the mechanism structure 400, the lower side in the illustrated embodiment, so as to be able to move up and down.

The elevation part 810 is connected to the manipulation handle part 740 . The elevation part 810 may be moved up and down together with the manipulation handle part 740 .

In the illustrated embodiment, the elevation portion 810 includes an extension bar 811, a shaft portion 812, a support protrusion 813, a guide bracket 814, an insertion protrusion 815, and an elevating spring 816.

The extension bar 811 is a part that is connected to the manipulation handle unit 740 and moves up and down in association with the elevation of the manipulation handle unit 740 .

The extension bar 811 extends in the same direction as the extension direction of the manipulation handle 740, in the front and rear directions in the illustrated embodiment. One end of the extension bar 811 facing the manipulation handle 740, in the illustrated embodiment, the front end is connected to the rear end of the manipulation handle 740.

At this time, a separate member (reference numeral not indicated) may be provided between the extension bar 811 and the manipulation handle unit 740 to interlock the lifting and lowering of the extension bar 811 .

The other end in the direction in which the extension bar 811 extends, in the illustrated embodiment, the rear end is rotatably coupled to the shaft portion 812 . The extension bar 811 may be rotated clockwise or counterclockwise about the shaft portion 812 .

A plurality of extension bars 811 may be provided. The plurality of extension bars 811 are spaced apart from each other and face each other. In the illustrated embodiment, two extension bars 811 are provided and connected to the manipulation handle 740 and the shaft 812, respectively. The plurality of extension bars 811 may be rotated together in conjunction with the elevation of the manipulation handle unit 740 .

The extension bar 811 is coupled to the guide bracket 814. Specifically, the extension bar 811 is movably coupled to the guide bracket 814 by the guide protrusion 811a.

The extension bar 811 is coupled with the insertion protrusion 815 . The extension bar 811 may rotate together with the insertion protrusion 815 .

The extension bar 811 is elastically supported by the elevating spring 816 . When the extension bar 811 is moved upward, the elevating spring 816 is compressed and stores restoring force.

In the illustrated embodiment, the extension bar 811 includes a guide protrusion 811a.

The guide protrusion 811a is movably coupled to the guide bracket 814 and guides the extension bar 811 to move up and down.

The guide protrusion 811a is located outside the extension bar 811 . In the illustrated embodiment, the guide protrusions 811a are positioned in directions opposite to the direction in which the plurality of extension bars 811 face each other. That is, the guide protrusion 811a is located on the left side of the extension bar 811 located on the left side and on the right side of the extension bar 811 located on the right side, respectively.

The guide protrusion 811a may protrude outward from the location of the extension bar 811 by a predetermined length.

The guide protrusion 811a is movably coupled to the guide bracket 814 . Specifically, the guide protrusion 811a is movably coupled to the elevation guide groove 814a formed in the guide bracket 814 in the vertical direction.

When the manipulation handle unit 740 moves up and down, the extension bar 811 and the guide protrusion 811a also move up and down. At this time, the extension bar 811 is moved up and down while the guide protrusion 811a remains coupled to the guide bracket 814.

Therefore, the extension bar 811 can be raised and lowered only in the vertical direction without being arbitrarily moved in other directions.

The shaft portion 812 functions as a rotation shaft around which the extension bar 811 rotates.

The shaft portion 812 is rotatably coupled with the extension bar 811 . In the illustrated embodiment, the shaft portion 812 is rotatably coupled to the other end in the direction in which the extension bar 811 extends, that is, to the rear end. The shaft portion 812 may be rotatably penetrated with each of the plurality of extension bars 811 .

The shaft portion 812 is rotatably coupled through the support protrusion 813 . The shaft portion 812 may be rotatably supported by the support protrusion 813 .

In the illustrated embodiment, the shaft portion 812 has a circular cross section and a cylindrical shape extending in the left and right directions. The shape of the shaft portion 812 may be any shape capable of being rotatably penetrated with the extension bar 811 and the support protrusion 813, respectively.

The support protrusion 813 rotatably supports the shaft portion 812 . A shaft portion 812 is rotatably coupled to the support protrusion 813 through.

The support protrusion 813 is coupled to one side of the body portion 710 opposite to the mechanism structure 400, the lower side in the illustrated embodiment. The support protrusion 813 may extend downward from the lower surface of the body portion 710 .

The support protrusion 813 is located adjacent to the rear side end of the extension bar 811 . The support protrusion 813 may be positioned between the plurality of extension bars 811 .

A guide bracket 814 partially surrounds the extension bar 811 . The guide bracket 814 guides the elevation according to the rotation of the extension bar 811 .

A space is formed inside the guide bracket 814. The insertion protrusion 815 is movably accommodated in the space. The guide bracket 814 may guide the elevation of the insertion protrusion 815 according to the rotation of the extension bar 811 .

The guide bracket 814 may be disposed adjacent to a position where the manipulation handle 740 and the extension bar 811 are coupled. In the illustrated embodiment, the guide bracket 814 partially surrounds a portion of the extension bar 811 adjacent to a portion where the manipulation handle 740 and the extension bar 811 are coupled.

The guide bracket 814 is coupled to one side of the body portion 710 opposite to the mechanism structure 400, the lower side in the illustrated embodiment.

The guide bracket 814 is penetrated in the direction in which the extension bar 811 extends, in the fore-and-aft direction in the illustrated embodiment. That is, the front and rear sides of the guide bracket 814 are open and communicate with the outside. The extension bar 811 can be penetrated through the front and rear sides of the guide bracket 814 .

Guide bracket 814 is coupled to the lower side of the body portion 710, the left and right sides in the illustrated embodiment are formed with lifting guide grooves 814a extending in the vertical direction. A guide protrusion 811a is inserted into and coupled to the elevating guide groove 814a. The guide protrusion 811a may move vertically along the elevation guide groove 814a.

The guide bracket 814 is a portion facing the one side, that is, the lower side of the body portion 710, a through hole is formed on the lower side in the illustrated embodiment. An insertion protrusion 815 is movably coupled to the through hole in the vertical direction.

The lower surface of the guide bracket 814 may be spaced apart from the upper surface 311 of the rail unit 310 . That is, the lower surface of the guide bracket 814 is positioned adjacent to the upper surface 311 of the rail unit 310, but may not come into contact with it.

Therefore, when the circuit breaker 20 is inserted into the casing 10, friction between the guide bracket 814 and the rail unit 310 does not occur, so that the durability of the circuit breaker assembly 1 can be increased.

The insertion protrusion 815 is inserted into or pulled out of the locking groove 330 . Accordingly, the movement of the circuit breaker 20 may be allowed or limited.

Specifically, when the insertion protrusion 815 is inserted into the catching groove 330, the movement of the blocker 20 is restricted. In addition, when the insertion protrusion 815 is withdrawn from the hooking groove 330, the movement of the blocker 20 is allowed.

The insertion protrusion 815 is coupled with the extension bar 811 . The insertion protrusion 815 may be lifted together with the extension bar 811 being lifted. That is, the vertical movement of the insertion protrusion 815 can be achieved as the manipulation handle 740 and the extension bar 811 connected thereto move vertically.

The insertion protrusion 815 is accommodated in a space formed inside the guide bracket 814 . In addition, the insertion protrusion 815 is coupled through a through hole formed through the one side of the guide bracket 814, the lower side in the illustrated embodiment.

The insertion protrusion 815 is movably accommodated in the space of the guide bracket 814 . The insertion protrusion 815 may move up and down together with the manipulation handle 740 and the extension bar 811 connected thereto.

The insertion protrusion 815 is elastically supported by the elevating spring 816 .

The lifting spring 816 elastically supports the insertion protrusion 815 that moves up and down together with the manipulation handle 740 . The elevating spring 816 presses the insertion protrusion 815 downward, that is, in a direction toward the circuit breaker coupling part 300 . Accordingly, the insertion protrusion 815 inserted into the hooking groove 330 is not arbitrarily withdrawn.

When the manipulation handle portion 740 is manipulated upward, the extension bar 811 and the insertion protrusion 815 connected to the manipulation handle portion 740 are moved upward together. At this time, the elevating spring 816 is pressed by the extension bar 811 or the insertion protrusion 815 to deform and store restoring force.

When the external force applied to the manipulation handle unit 740 disappears, the elevating spring 816 is restored to its original shape and provides the stored restoring force to the insertion protrusion 815 . At this time, the restoring force is directed downward, that is, toward the circuit breaker coupling part 300. Thus, the insertion protrusion 815 may remain inserted into the catching groove 330 .

Accordingly, it will be understood that in the embodiment shown in FIGS. 21 to 24 , an external force is applied to the manipulation handle 740 so that the insertion protrusion 815 is withdrawn from the hooking groove 330 .

The elevating spring 816 may be provided in any form capable of storing restoring force by shape deformation and transmitting the stored restoring force to the outside. In the illustrated embodiment, the elevating spring 816 is provided as a coil spring.

The limiting plate 820 is moved in the direction in which the first supporting plate 711 extends, in the illustrated embodiment, in the left and right directions, so that it comes into contact with or is spaced apart from the blocking plate 340 . When the limiting plate 820 contacts the blocking plate 340, the circuit breaker 20 is restricted from moving in a direction in which it is withdrawn from the casing 10, that is, toward the front side.

The limiting plate 820 is movably coupled to the body 710 . Specifically, the limiting plate 820 is coupled to the inside of the first support plate 711, to the rear side in the illustrated embodiment, to be movable in the left and right directions. The coupling is achieved by the fastening member 840 .

The limiting plate 820 may move according to the elevation of the vertical link unit 860 . Specifically, when the vertical link unit 860 moves up and down, the rotation link unit 850 connected to the vertical link unit 860 rotates clockwise or counterclockwise.

Accordingly, the limiting plate 820 connected to the rotary link unit 850 may be moved left or right.

At this time, when the limiting plate 820 moves to the right, it can be understood that it moves in a direction toward the blocking plate 340 . That is, when the limiting plate 820 is moved to the right, the limiting plate 820 and the blocking plate 340 come into contact with each other. Accordingly, movement of the circuit breaker 20 to the front side is restricted.

In addition, when the limiting plate 820 moves to the left, it can be understood that it moves in a direction opposite to the blocking plate 340 . That is, when the limiting plate 820 is moved to the left, the limiting plate 820 and the blocking plate 340 are spaced apart from each other. Accordingly, movement of the circuit breaker 20 to the front side is allowed.

The limiting plate 820 is connected to the rotation link unit 850 . The elevation of the vertical link unit 860 is converted into a movement of the limiting plate 820 in the horizontal direction by the rotation link unit 850 . In one embodiment, the limiting plate 820 may be linked to the rotation link unit 850 .

In the illustrated embodiment, the limiting plate 820 is linked to the second link 853 of the rotary link unit 850 . The linking is accomplished by a pressure pin 856.

In the embodiment shown in FIG. 20 , the limiting plate 820 includes a first part 821, a second part 822, a coupling groove 823, a limiting protrusion 824, a first moving groove 825, 2 includes a moving groove 826, a pin insertion part 827 and a hooking protrusion 828.

The first part 821 forms the upper part of the limiting plate 820 facing the body part 710, in the illustrated embodiment. The first portion 821 extends in the direction in which the first support plate 711 extends, in the left and right directions in the illustrated embodiment.

The first part 821 is movably coupled to the first support plate 711 . The coupling is achieved by the first fastening member 841 .

The first part 821 is continuous with the second part 822 . Specifically, the lower right portion of the first portion 821 is continuous with the upper left portion of the second portion 822 .

A limiting protrusion 824 is positioned at one end of the extending direction of the first portion 821, at the left end in the illustrated embodiment. The limiting protrusion 824 protrudes downward from the left end of the first portion 821 toward the manipulation handle 740, in the illustrated embodiment.

In the illustrated embodiment, the first portion 821 is formed in a rectangular plate shape in which the extension length in the left-right direction is longer than the extension length in the up-down direction. The first part 821 may be provided in any shape capable of being movably coupled to the first support plate 711 .

A first moving groove 825 is formed through the inside of the first part 821 in the thickness direction, in the front-rear direction in the illustrated embodiment.

The first part 821 partially surrounds the coupling groove 823, which is a space where the manipulation handle 740 is located. In the illustrated embodiment, the first portion 821 surrounds the upper side of the coupling groove 823 .

In a state where the limiting plate 820 is moved to the right so that the limiting plate 820 and the blocking plate 340 do not overlap in the front-back direction, the first part 821 may partially cover the second guide groove 711b. there is.

In this state, the distance that the manipulation handle unit 740 moves upward is reduced, but since the limiting plate 820 and the blocking plate 340 do not come into contact, the circuit breaker 20 moves in the direction in which the circuit breaker 20 is withdrawn from the casing 10. It can be as described above.

The second portion 822 forms the opposite portion of the body portion 710 among the portions of the limiting plate 820, the lower side in the illustrated embodiment. The second portion 822 extends in the direction in which the first supporting plate 711 or the first portion 821 extends, in the illustrated embodiment, in the left and right directions.

The second part 822 is movably coupled to the first support plate 711 . The coupling is achieved by the second fastening member 842 .

The second portion 822 is continuous with the first portion 821 . Specifically, the upper left portion of the second portion 822 is continuous with the lower right portion of the first portion 821 .

That is, the first part 821 and the second part 822 are disposed to cross each other in the vertical direction.

In the illustrated embodiment, the second portion 822 is formed in a rectangular plate shape in which the extension length in the left-right direction is longer than the extension length in the up-down direction. In this case, the length of the second portion 822 extending in the left-right direction may be longer than the length of the first portion 821 extending in the left-right direction.

The second portion 822 may be provided in any shape capable of being movably coupled to the first support plate 711 .

A second moving groove 826 is formed through the inside of the second part 822 in the thickness direction, in the front-rear direction in the illustrated embodiment.

A lower end of the second portion 822 may be positioned higher than an upper end of the blocking protrusion 342 of the blocking plate 340 . That is, the lower end of the second portion 822 does not contact the blocking plate 340 .

One side of the second part 822 opposite to the first part 821, in the illustrated embodiment, the pin insertion part 827 is recessed on the right side of the lower side. A pressing pin 856 of the rotary link unit 850 is inserted into the pin insertion unit 827 .

Accordingly, when the rotary link unit 850 is rotated, the second part 822 and the limiting plate 820 are pressed by the pressing pin 856 and can be moved left or right.

The second portion 822 partially surrounds the coupling groove 823, which is a space where the manipulation handle unit 740 is located. In the illustrated embodiment, the second portion 822 surrounds the right side of the coupling groove 823 .

An end of the second part 822 surrounding the coupling groove 823, in the illustrated embodiment, the left part may be formed to be rounded so that its upper side is convex downward.

The coupling groove 823 is a space into which the manipulation handle 740 coupled through the first support plate 711 is inserted. The manipulation handle unit 740 may be moved in a direction toward and opposite to the first part 821 in a state of being inserted into the coupling groove 823, up and down in the illustrated embodiment. The manipulation handle unit 740 is accommodated through the coupling groove 823 in the front-rear direction.

The coupling groove 823 is partially surrounded by the first portion 821 , the second portion 822 and the limiting protrusion 824 . In the illustrated embodiment, the upper side of the coupling groove 823 is surrounded by the first portion 821 and the right side of the coupling groove 823 is surrounded by the second portion 822 . The left side of the engagement groove 823 is partially surrounded by a limiting protrusion 824 .

The rest of the coupling groove 823 communicates with the outside. In the illustrated embodiment, the remaining portion of the left side and the lower side of the coupling groove 823 are in communication with the outside.

The limiting protrusion 824 prevents the manipulation handle portion 740 accommodated in the coupling groove 823 from being arbitrarily separated. In addition, the limiting protrusion 824 prevents any movement of the limiting plate 820 when the operation handle 740 is not operated.

The limiting protrusion 824 continues with the first portion 821 . In the illustrated embodiment, the limiting protrusion 824 protrudes downward from the left end of the first portion 821 .

The limiting protrusion 824 partially surrounds the engagement groove 823 . In the illustrated embodiment, the limiting protrusion 824 partially surrounds the upper left side of the engagement groove 823 .

Movement of the limiting plate 820 may be restricted by the limiting protrusion 824 in a state in which the manipulation handle 740 is moved upward. In addition, the manipulation handle 740 inserted into the coupling groove 823 may not be separated from the coupling groove 823 .

Specifically, when the limiting plate 820 is moved to the right by a predetermined distance in the above state, the limiting protrusion 824 comes into contact with the manipulation handle 740 . Accordingly, the limiting plate 820 no longer moves to the right.

When the manipulation handle portion 740 is moved downward, even if the limiting plate 820 is moved to the right, the manipulation handle portion 740 moves through the opening of the coupling groove 823 (that is, the opening formed on the left side) to the coupling groove. It can be drawn out of (823).

The first movable groove 825 is a portion to which the first fastening member 841 movably couples the first portion 821 to the first support plate 711 . The first moving groove 825 is formed through the inside of the first part 821 in its thickness direction (ie, in the front-rear direction).

The first moving groove 825 extends in the direction in which the first portion 821 extends, in the illustrated embodiment, in the left and right directions. An extension length of the first moving groove 825 may be determined according to a distance to be moved in order for the limiting plate 820 to come into contact with and be separated from the blocking plate 340 .

That is, the first moving groove 825 is blocked by the limiting plate 820 when one end (ie, the left end) of the extending direction toward the coupling groove 823 comes into contact with the first fastening member 841. It comes into contact with the plate 340.

In addition, when the other end (ie, the right end) opposite to the coupling groove 823 among the ends in the extending direction of the first moving groove 825 comes into contact with the first fastening member 841, the limiting plate 820 It is spaced apart from the blocking plate 340.

The first fastening member 841 is movably coupled through the first moving groove 825 . At this time, the first fastening member 841 is coupled through the first groove 711a of the first support plate 711 and does not move. Accordingly, it will be understood that the above-described movement process is a relative movement of the first portion 821 with respect to the first fastening member 841 .

The first movable groove 825 is located adjacent to the second movable groove 826 . In the illustrated embodiment, the first moving groove 825 is located on the upper side of the second moving groove 826 and is biased to the left side.

It will be appreciated that the positional relationship between the first moving groove 825 and the second moving groove 826 is similar to the relative positional relationship between the first part 821 and the second part 822 .

The second movable groove 826 is a part to which the second fastening member 842 movably couples the second part 822 to the first support plate 711 . The second moving groove 826 is formed through the inside of the second portion 822 in its thickness direction (ie, in the front-rear direction).

The second moving groove 826 extends in the direction in which the second portion 822 extends, in the illustrated embodiment, in the left and right directions. The extended length of the second moving groove 826 may be determined according to the distance that the limiting plate 820 has to move to come into contact with and be separated from the blocking plate 340 .

That is, the second moving groove 826 is formed when one end (ie, the left end) of the extending direction toward the coupling groove 823 comes into contact with the second fastening member 842. is in contact with the blocking plate 340 .

In addition, when the other end opposite to the coupling groove 823 of the end of the extending direction of the second moving groove 826 comes into contact with the second fastening member 842, the limiting plate 820 is connected to the blocking plate 340. are spaced apart

The second fastening member 842 is movably coupled through the second moving groove 826 . At this time, the second fastening member 842 is coupled through the second groove 711b of the first support plate 711 and does not move. Accordingly, it will be understood that the above-described moving process is also a relative movement of the second portion 822 with respect to the second fastening member 842 .

The pin insertion part 827 is a space into which the pressing pin 856 of the rotary link part 850 is inserted. In the illustrated embodiment, the pin insertion portion 827 is recessed on the right side of the lower surface of the second part 822 .

When the rotary link unit 850 is operated, the inserted pressing pin 856 presses one of the inner surfaces surrounding the pin insertion unit 827 . Accordingly, the limiting plate 820 may move left or right.

The locking protrusion 828 is a portion where the limiting plate 820 comes into contact with or is spaced apart from the blocking plate 340 .

Specifically, when the limiting plate 820 is moved to the left, the locking protrusion 828 is spaced apart from the blocking plate 340 in the front-rear direction. In this state, the circuit breaker 20 can be moved in a direction in which it is drawn out of the casing 10 (ie, to the front side).

Also, when the limiting plate 820 is moved to the right, the locking protrusion 828 overlaps the blocking plate 340 in the front-back direction.

In this state, when the circuit breaker 20 is moved in the direction in which it is drawn out of the casing 10 (ie, the front side), the locking protrusion 828 and the blocking protrusion 342 of the blocking plate 340 come into contact. As a result, the circuit breaker 20 is not withdrawn from the casing 10 .

The hooking protrusion 828 protrudes from the lower surface of the second part 822 . In addition, the hooking protrusion 828 is located on one side of the direction in which the second part 822 extends, on the left side in the illustrated embodiment.

As the hooking protrusion 828 protrudes from the lower surface of the second part 822 , the lower end of the hooking protrusion 828 is lower than the lower surface of the second part 822 . At this time, the lower end of the locking protrusion 828 is located lower than the upper end of the blocking protrusion 342 of the blocking plate 340 .

As described above, the lower surface of the second part 822 is located above the blocking protrusion 342 of the blocking plate 340 . Therefore, the second portion 822 and the blocking plate 340 do not come into contact.

On the other hand, the lower end of the locking protrusion 828 is positioned lower than the upper end of the blocking protrusion 342 . Accordingly, when the circuit breaker 20 is moved forward and backward in a state in which the locking protrusion 828 and the blocking plate 340 overlap each other in the forward and backward directions, the locking protrusion 828 and the blocking projection 342 come into contact with each other.

Therefore, depending on the relative positions of the limiting plate 820 and the blocking plate 340, the withdrawal of the blocker 20 may be allowed or restricted.

A detailed description of a process of permitting and restricting the movement of the circuit breaker 20 by operating the operation handle unit 740 and operating the vertical link unit 860 and the rotation link unit 850 will be described later.

The fastening member 840 movably couples the limiting plate 820 to the cart unit 700 . The limiting plate 820 may move in a left and right direction relative to the fastening member 840 while being coupled to the fastening member 840 . The fastening member 840 is through-coupled to the first support plate 711 and the limiting plate 820 .

The fastening member 840 may be provided in any form capable of coupling two or more members to be relatively movable with respect to each other. In one embodiment, the fastening member 840 may be provided as a screw member including a washer.

A plurality of fastening members 840 may be provided. The plurality of fastening members 840 may be through-coupled to the limiting plate 820 and the first support plate 711 at different positions.

In the illustrated embodiment, the fastening member 840 includes a first fastening member 841 and a second fastening member 842 .

The first fastening member 841 is coupled to the first part 821 of the limiting plate 820 and fastens the limiting plate 820 to the first support plate 711 so as to be movable in the left and right directions.

The first fastening member 841 is through-coupled to the first support plate 711 and the first part 821 . Specifically, the first fastening member 841 is coupled through the first groove 711a formed in the first support plate 711 and the first moving groove 825 formed in the first part 821 .

As the limiting plate 820 moves in the left and right directions, the first fastening member 841 may come into contact with both end portions of the first moving groove 825 . Accordingly, the movement distance of the limiting plate 820 may be limited.

The second fastening member 842 is coupled to the second part 822 of the limiting plate 820 and fastens the limiting plate 820 to the first support plate 711 so as to be movable in the left and right directions.

The second fastening member 842 is through-coupled to the first support plate 711 and the second part 822 . Specifically, the second fastening member 842 is coupled through the second groove 711b formed in the first support plate 711 and the second moving groove 826 formed in the second part 822 .

As the limiting plate 820 moves in the left and right directions, the second fastening member 842 may come into contact with both end portions of the second moving groove 826 . Accordingly, the movement distance of the limiting plate 820 may be limited.

The rotation link unit 850 converts the vertical movement of the vertical link unit 860 into horizontal movement. Accordingly, the limiting plate 820 may be moved in the left and right directions by the vertical movement of the vertical link unit 860 .

The rotational link 850 is connected to the vertical link 860 . The rotating link unit 850 is rotated by vertical movement of the vertical link unit 860 in the vertical direction.

The rotation link unit 850 is connected to the limiting plate 820 . Rotation of the rotary link unit 850 may be converted into left-right movement of the limiting plate 820 .

The rotational link 850 is rotatably coupled to one side of the body 710 opposite to the mechanism structure 400, the lower side in the illustrated embodiment.

In the illustrated embodiment, the rotation link unit 850 includes a link body 851, a first link 852, a second link 853, a first connection unit 854, a second connection unit 855 and a pressure pin ( 856).

The link body 851 forms the body of the rotating link unit 850 . The link body 851 connects the limiting plate 820 and the vertical link part 860 . The link body 851 extends between the limiting plate 820 and the vertical link part 860 . In the illustrated embodiment, the link body 851 extends in the front-rear direction.

The link body 851 is rotatably coupled to the body portion 710. The link body 851 may rotate clockwise or counterclockwise while being coupled to the body 710 .

The link body 851 is linked to the first link 852 that is linked to the vertical link unit 860 . Accordingly, the link body 851 may be rotated by vertical movement of the vertical link unit 860 .

The link body 851 is linked to the second link 853 that is linked to the limiting plate 820 . Accordingly, the rotation of the link body 851 may be converted into a left-right movement of the limiting plate 820 .

The first link 852 connects the link body 851 and the vertical link unit 860 . The first link 852 is linked to the link body 851 and the vertical link portion 860, respectively. Specifically, the first link 852 is linked to the link connection unit 863 located on the lower side of the vertical link unit 860 .

When the vertical link unit 860 is raised or lowered, the first link 852 is rotated clockwise or counterclockwise. Accordingly, the link body 851 coupled with the first link 852 may also be rotated clockwise or counterclockwise.

The second link 853 connects the link body 851 and the limiting plate 820 . The second link 853 is linked to the link body 851 and the limiting plate 820, respectively.

When the link body 851 is rotated clockwise or counterclockwise, the second link 853 can be moved left or right or rotated clockwise or counterclockwise. Accordingly, the limiting plate 820 coupled with the second link 853 may move toward the left or right.

The first connection unit 854 connects the first link 852 and the link connection unit 863 to each other. The first connection portion 854 is rotatably coupled to the first link 852 and the link connection portion 863, respectively.

The second connecting portion 855 rotatably couples the second link 853 and the first support plate 711 (best shown in FIGS. 12 and 17). That is, the second connection portion 855 functions as a rotation axis of the second link 853 .

The pressure pin 856 is coupled to the second link 853 and transmits rotation of the second link 853 to the limiting plate 820 .

The pressure pin 856 is rotatably coupled to the second link 853 . The pressure pin 856 may not rotate regardless of the rotation of the second link 853 .

The pressure pin 856 is coupled with the limiting plate 820 . Specifically, the pressing pin 856 is inserted into and coupled to the pin insertion portion 827 of the limiting plate 820 . As the second link 853 rotates, the pressing pin 858 presses the limiting plate 820 in the left or right direction.

Accordingly, the locking protrusion 828 of the limiting plate 820 and the blocking protrusion 342 of the blocking plate 340 overlap each other in the front-back direction or are spaced apart from each other, so that the withdrawal of the circuit breaker 20 is restricted or permitted. It can be.

The vertical link unit 860 moves up and down in conjunction with the vertical movement of the elevating frame 450 as the jack is coupled to or separated from the connector 410 . The elevation of the vertical link unit 860 is converted into a rotational movement of the rotation link unit 850 . Accordingly, the limiting plate 820 may be moved in the left and right directions by the elevation of the elevation frame 450 .

The vertical link unit 860 is connected to the elevating frame 450 . The vertical link unit 860 may be raised or lowered by movement of the elevating frame 450 in a vertical direction.

The vertical link unit 860 is connected to the rotation link unit 850 . The vertical movement of the vertical link unit 860 may be converted into clockwise or counterclockwise rotation of the rotary link unit 850 .

The vertical link unit 860 is movably coupled to the mechanism structure 400 . Specifically, the vertical link unit 860 is movably coupled to the rear frame 433 . At this time, the bracket 434 is provided for the coupling of the vertical link unit 860 as described above.

In the illustrated embodiment, the vertical link portion 860 includes a vertical extension portion 861, a head portion 862, a link connection portion 863, and a return spring 864.

The vertical extension part 861 connects the elevating frame 450 and the rotational link part 850 . The vertical extension part 861 extends between the elevating frame 450 and the rotational link part 850 . In the illustrated embodiment, the vertical extension part 861 extends in the vertical direction.

The vertical extension 861 is coupled to the rear frame 433 so as to be able to move up and down. Specifically, the vertical extension 861 is movably coupled to the rear frame 433 by the bracket 434 . The vertical extension 861 may move upward or downward while being coupled to the bracket 434 .

The vertical extension part 861 is coupled to the head part 862 coupled to the elevating frame 450 . When the elevating frame 450 and the head part 862 connected thereto are moved up and down, the vertical extension part 861 may be lifted together with the head part 862 .

The vertical extension part 861 is linked to the link connection part 863 connected to the rotational link part 850 . The vertical movement of the vertical extension part 861 may be converted into rotation of the rotational link part 850 by the link connecting part 863 .

The head portion 862 connects the vertical extension portion 861 and the elevating frame 450 . The head portion 862 is coupled to the vertical extension portion 861 and the elevating frame 450, respectively.

The head part 862 may move up and down together with the elevating frame 450 . Accordingly, the vertical extension part 861 connected to the head part 862 may also be moved in the vertical direction.

The head part 862 is elastically supported by the return spring 864. Accordingly, the elevating frame 450 coupled with the head portion 862 may also be elastically supported by the return spring 864 .

The link connection part 863 connects the vertical extension part 861 and the rotational link part 850. Specifically, the link connection portion 863 is linked to the vertical extension portion 861 and the first link 852, respectively.

When the vertical extension part 861 is moved in the vertical direction, the link connection part 863 is moved in the vertical direction. Accordingly, the first link 852 connected to the link connecting portion 863 is rotated clockwise or counterclockwise. The rotation is converted into left-right movement of the limiting plate 820 by the link body 851 and the second link 853.

The return spring 864 stores restoring force for returning the head portion 862 and the elevating frame 450 connected thereto to their original positions, that is, to the positions before the connector 410 was pressed and moved downward.

As the jack is coupled to the connector 410 and the elevating frame 450 moves downward, the return spring 864 is deformed in shape and can store restoring force.

In addition, when the jack is separated from the connector 410, the stored restoring force is provided to the elevating frame 450 to return the elevating frame 450 to its original position.

In the illustrated embodiment, the return spring 864 is provided in the form of a coil spring. The return spring 864 may be provided in any form capable of storing restoring force by shape deformation and providing the stored restoring force to other members.

In the illustrated embodiment, the return spring 864 extends vertically. The upper end of the return spring 864 is connected to the head part 862 and the elevating frame 450 connected thereto to elastically support them. The lower end of return spring 864 may be supported by any component included in mechanism structure 400 .

5. Description of the process of restricting or allowing the movement of the circuit breaker 20 according to an embodiment of the present invention

The circuit breaker assembly 1 according to the embodiment of the present invention may allow or restrict movement of the circuit breaker 20 coupled to the casing 10 in a plurality of steps.

In particular, in the circuit breaker 20 according to the embodiment of the present invention, whether or not the jack and connector 410 are coupled and whether or not the circuit breaker 20 moves is interlocked. Therefore, the circuit breaker 20 is not arbitrarily separated from the casing 10 or moved while the jack is coupled.

As a result, the coupled state between the jack and the connector 410 is stably maintained, and damage and malfunction of components of the circuit breaker 20 that may occur during arbitrary separation can be prevented. Thus, the operation reliability of the circuit breaker assembly 1 is improved, the durability period is increased, and the operator's work convenience can be improved.

Hereinafter, with reference to FIGS. 4, 6, and 21 to 26, the circuit breaker 20 of the circuit breaker assembly 1 according to the embodiment of the present invention is coupled to the casing 10 and the movement is restricted in detail. explain clearly.

(1) Description of the initial stage in which the circuit breaker 20 is coupled to the casing 10

Referring to FIG. 4 , the casing 10 in a state in which the circuit breaker 20 is separated is shown.

As described above, the circuit breaker 20 can be slidably coupled to the casing 10 at various positions.

That is, each of the wheel units 720 is rotatably inserted into the plurality of guide rails 240 . In addition, the insertion guide part 730 is located on the upper side of the guide part 250, and its left and right sides surround the left and right sides of the guide part 250.

In addition, the elevation part 810 is located on the upper side of the rail part 310, and the insertion protrusion 815 is disposed to protrude toward the rail part 310.

At this time, the front side of the rail unit 310, that is, the initial position where the circuit breaker 20 is coupled to the casing 10, is provided with an inclined surface 320 extending toward the front side and inclined downward.

Therefore, the circuit breaker 20, specifically, the elevation part 810 is guided by the inclined surface 320 and can smoothly enter the rail part 310. Accordingly, the circuit breaker 20 can easily enter the accommodating space 130 .

(2) Description of one step in which the movement of the circuit breaker 20 is limited and allowed

Referring to FIGS. 21 to 24 , a manipulation handle unit 740 and an elevation unit 810 provided in the circuit breaker 20 are shown.

The manipulation handle part 740 is coupled to the body part 710 so as to be movable in the vertical direction. In addition, one end (rear end in the illustrated embodiment) of the manipulation handle part 740 extends to the lower side of the body part 710 and is connected to the extension bar 811.

Accordingly, the vertical movement of the manipulation handle unit 740 is interlocked with the vertical movement of the extension bar 811 and the insertion protrusion 815 coupled to the extension bar 811 .

When the manipulation handle part 740 is manipulated to move upward, the extension bar 811 and the insertion protrusion 815 are also moved upward. Accordingly, the lower end of the insertion protrusion 815 is spaced apart from the upper surface 311 of the rail unit 310 .

In this state, since the circuit breaker 20 and the rail part 310 are spaced apart from each other, the circuit breaker 20 can be moved in the direction of being inserted into or withdrawn from the casing 10, in the illustrated embodiment, in the forward and backward directions.

After the circuit breaker 20 is moved to a position to be operated in the test mode and operation mode, the operation handle unit 740 is moved downward so that the circuit breaker 20 can be maintained in its position.

As described above, the position where the insertion protrusion 815 is inserted into the first groove part 331 can be defined as the test position, and the position where the insertion protrusion 815 is inserted into the second groove part 332 can be defined as the driving position. As described above (see Fig. 6).

In addition, when the manipulation handle portion 740 is pressed upward, the elevating spring 816 is pressed and deformed to store restoring force, and when the external force applied to the manipulation handle portion 740 disappears, it is inserted by the restoring force. The protrusion 815 and the manipulation handle 740 are moved downward as described above.

In this state, due to the combination of the insertion protrusion 815 and the locking groove 330, the circuit breaker 20 cannot be moved in the direction in which it is inserted into or withdrawn from the casing 10, in the forward and backward directions in the illustrated embodiment.

Therefore, it is possible to prevent an accident or the like that may occur when the circuit breaker 20 coupled to the casing 10 is arbitrarily moved.

(3) Description of other steps in which the withdrawal of the circuit breaker 20 is limited and allowed

Referring to FIGS. 25 and 26 , a mechanism structure 400 and a movement limiting unit 800 provided in the circuit breaker 20 are shown.

The elevating frame 450 is coupled to the frame 430 so as to be elevating in the vertical direction. In addition, the connector 410 and the connector fastening part 420 are coupled to the elevating frame 450 and can be moved together with the elevating frame 450 in a vertical direction.

The elevating frame 450 is connected to the vertical link unit 860 of the movement limiting unit 800 . In addition, the vertical link unit 860 is connected to the limiting plate 820 by a rotation link unit 850 .

Accordingly, when the elevating frame 450 is moved in the vertical direction, the limiting plate 820 is moved in the left and right directions so that it may contact or be separated from the blocking plate 340 .

In the following description, it is assumed that the circuit breaker 20 is disposed at a position for operating in the test mode or inside it, that is, at a position where the circuit breaker 20 is further inserted into the casing 10.

That is, it is assumed that the blocker 20 is disposed at a position where it can come into contact with the rear side of the blocking protrusion 342 of the blocking plate 340 when the limiting plate 820 is moved.

When the jack is coupled to the connector 410, the connector 410 and the elevating frame 450 connected thereto move downward. Accordingly, the vertical extension part 861 connected to the elevating frame 450 is also moved downward.

Accordingly, by the link connecting portion 863 connected to the vertical extension portion 861, the elevation is converted into a rotational motion of the rotational link portion 850. The rotating link unit 850 is rotated in one of clockwise and counterclockwise directions.

Accordingly, the limiting plate 820 connected to the second link 853 is moved toward the blocking plate 340, to the right in the illustrated embodiment.

Accordingly, when the jack is coupled to the connector 410, the locking protrusion 828 of the limiting plate 820 overlaps the blocking protrusion 342 in the front-rear direction.

That is, the circuit breaker 20 can be moved in the direction toward the inside of the casing 10 (ie, the rear side), but is not moved in the direction drawn out of the casing 10 (ie, the front side).

As a result, in a state where the jack is coupled to the connector 410, the circuit breaker 20 is not withdrawn from the casing 10.

Also, when the connector 410 and the jack are separated, the connector 410 and the elevating frame 450 connected thereto are moved upward. Accordingly, the vertical extension part 861 connected to the elevating frame 450 is also moved upward.

Restoring force for the movement may be provided by the return spring 864 as described above.

Accordingly, by the link connecting portion 863 connected to the vertical extension portion 861, the elevation is converted into a rotational motion of the rotational link portion 850. The rotating link unit 850 is rotated in the other one of clockwise and counterclockwise directions.

Accordingly, the limiting plate 820 connected to the second link 853 moves in a direction opposite to the blocking plate 340, in the illustrated embodiment, toward the left.

Accordingly, when the jack is separated from the connector 410, the locking protrusion 828 of the limiting plate 820 is spaced apart from the blocking protrusion 342 in the front-rear direction.

That is, the circuit breaker 20 may be moved in a direction toward the inside of the casing 10 (ie, the rear side) or in a direction drawn out of the casing 10 (ie, the front side).

As described above, in the circuit breaker assembly 1 according to the embodiment of the present invention, the initial coupling of the casing 10 and the circuit breaker 20 can be easily performed.

In addition, the circuit breaker assembly 1 according to an embodiment of the present invention is interlocked with whether the circuit breaker 20 is disposed in a position operated in a specific mode or whether the connector 410 and the jack are connected, thereby providing the circuit breaker 20 with Availability of movement can be controlled.

Thus, the operation reliability of the circuit breaker assembly 1 can be improved, and safety accidents and product damage caused by erroneous operation can be prevented.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention described in the claims below. You will understand that you can.

1: circuit breaker assembly
10: casing
20: vacuum circuit breaker
100: base
110: horizontal plate
120: support member
130: accommodation space
200: vertical part
210 First Edition
220: second edition
230: reinforcing member
240: guide rail
241: first guide rail
242: second guide rail
250: guide unit
300: breaker coupling part
310: rail part
311: upper surface
312: side
320: slope
330: catch groove
331: first groove
332: second groove
340: blocking plate
341: blocking extension
342: blocking protrusion
400: mechanism structure
410: connector
420: connector fastening part
421: side plate
421a: fastening hole
422: hanging bar
430: frame
431: horizontal frame
432: vertical frame
433: rear frame
434 Bracket
440: mechanism
450: lifting frame
500: blocking unit
510: first blocking unit
520: second blocking unit
530: third blocking unit
600: terminal part
610: first terminal unit
620: second terminal unit
630: third terminal unit
700: Cartbu
710: body part
711: first support plate
711a: first guide groove (left and right)
711b: second guide groove (top and bottom)
712 second support plate
720: wheel part
730: insertion guide unit
740: operation handle part
800: movement limiting unit
810: lift part
811: extension bar
811a: guide projection
812: shaft part
813: support projection
814: guide bracket
814a: elevating guide groove
815: insertion protrusion
816: lifting spring
820: limiting plate
821 first part
822 second part
823: coupling groove
824: limit protrusion
825: first moving home
826: second moving home
827: pin insertion part
828: catch protrusion
840: fastening member
841: first fastening member
842: second fastening member
850: rotation link
851: link body
852: first link
853: second link
854: first connection
855: second connection
856: pressure pin
860: vertical link unit
861: vertical extension
862: head part
863: link connection
864: return spring
h1: first height
h2: second height
l1: first length
l2: second length

Claims (14)

cart part;
a limiting plate movably coupled to the cart unit in a first direction and in a second direction opposite to the first direction;
a rotating link unit rotatably coupled to the cart unit and link-coupled to the limiting plate;
a vertical link portion coupled to the rotation link portion and extending in a third direction; and
A connector connected to the vertical link portion and moving in the third direction and a fourth direction opposite to the third direction together with the vertical link portion,
The limiting plate,
When moved in any one of the first direction and the second direction, overlaps the cart unit along the fifth direction with the blocking plate located outside the fourth direction,
When moved in the other one of the first direction and the second direction, it is spaced apart from the blocking plate along the fifth direction,
The limiting plate,
a first portion extending in the first direction and the second direction;
a second portion continuous with the first portion and extending in the first and second directions; and
It is partially surrounded by the first part and the second part and includes a coupling groove in which a manipulation handle portion movably coupled to the cart unit is accommodated,
breaker. According to claim 1,
The blocking plate,
a blocking extension extending in the fifth direction and having a predetermined height; and
A blocking protrusion continuous with the blocking extension and formed to have a height greater than the blocking extension;
The limiting plate,
And a hooking protrusion extending toward the blocking plate from one side facing the blocking plate,
The end in the direction in which the engaging protrusion extends,
Doedoe located higher than the height of the blocking extension, located lower than the height of the blocking protrusion,
breaker. According to claim 2,
When the connector is moved in the fourth direction and the rotating link portion is rotated,
The blocking plate is moved in any one of the first direction and the second direction so that the blocking protrusion and the catching protrusion are overlapped along the fifth direction.
breaker. delete According to claim 1,
The rotating link part,
A pressure pin rotatably coupled to the limiting plate,
The limiting plate,
Including a pin insertion portion formed in a depression on the outer circumference of the second portion and receiving the pressing pin,
breaker. According to claim 1,
a frame positioned outside the cart unit in the third direction, connected to the cart unit, and movably coupled to the vertical link unit in the third and fourth directions; and
A lifting frame coupled to the connector and coupled to the frame to be movable in the third direction and the fourth direction together with the connector,
breaker. According to claim 6,
The vertical link part,
a head portion connected to the elevating frame;
a vertical extension portion connected to the head portion and extending between the elevating frame and the rotation link portion; and
Including a link connection portion connected to the vertical extension portion and the rotation link portion, respectively,
breaker. According to claim 7,
The vertical link part,
And a return spring located outside the head in the fourth direction and elastically supporting the head.
breaker. According to claim 1,
The rotating link part,
a link body extending between the vertical link portion and the limiting plate;
A first link coupled to the link body and the vertical link portion, respectively; and
Including a second link coupled to the link body and the limiting plate, respectively,
breaker. According to claim 9,
The first link,
Converting the movement of the vertical link portion into rotation of the link body,
The second link,
Converting the rotation of the link body to the movement of the limiting plate,
breaker. According to claim 1,
And a fastening member movably coupled to the limiting plate to the cart,
The limiting plate,
a first portion extending in the first direction and the second direction; and
A second part continuous with the first part and extending in the first direction and the second direction,
In at least one of the first part and the second part,
Extending in the first direction and the second direction, a moving groove to which the fastening member is coupled is formed.
breaker. A casing with a space formed therein; and
A circuit breaker coupled to the casing to be slidable and drawn in or out of the space;
The casing,
a rail part located below the retracted circuit breaker and extending in the front-rear direction; and
It is located on one side of the rail part in the width direction, and extends in the front-back direction, and includes a blocking plate having a height of a front end higher than a height of a rear end,
the circuit breaker,
A connector connected to an external control power supply and energized and provided with a vertical elevation;
a vertical link part extending in a vertical direction and connected to the connector to be moved up and down together with the connector;
a rotating link coupled to the vertical link and rotated according to the elevation of the vertical link; and
A limiting plate located on the upper side of the rail unit and linked to the rotation link unit to move to the left or right according to the rotation of the rotation link unit,
The limiting plate,
It protrudes toward the rail portion, and its lower end is positioned lower than the front end of the blocking plate and higher than the rear end.
circuit breaker assembly. According to claim 12,
The circuit breaker is introduced into the casing from the front side of the casing,
On the upper side of the rail part,
a first groove part which is located on the front side of the rail part and has an open upper side; and
Located on the rear side of the rail portion, a second groove portion with an open upper side is formed,
the circuit breaker,
a manipulation handle unit extending toward the front side and coupled to be movable in an up and down direction; and
It is connected to the manipulation handle and includes an insertion protrusion that is lifted together with the manipulation handle and inserted into the first groove or the second groove.
circuit breaker assembly. According to claim 13,
the circuit breaker,
a body portion slidably coupled to the casing and facing the rail portion; and
It is provided in the body and includes a lifting spring for elastically supporting the insertion protrusion,
When the operation handle portion is pressed upward, the lifting spring stores a restoring force.
circuit breaker assembly.

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