KR101650697B1 - Interlock device of door and switch-gear having the same - Google Patents

Abstract

An interlock device of a switchgear door configured to open a door of a switchboard only when the system of the switchboard is in a grounded state is disclosed.
The interlock device includes a rotary plate which is provided with a cut-in, a pull-in and a grounded state of a circuit device provided in the switchboard through a rotary operation, and has a lead-in groove at one side of a rim; A drawing member which is drawn into the lead-in groove when the circuit device is in a ground state; A rotary arm provided on a main body frame of the power distribution board, rotated by the pulling-in operation of the pulling member, and having a hook-shaped hook at one end; And a locking bar provided on the switchgear door and configured to be caught by the latching portion when the switchgear door is closed; Wherein when the pulling-in member is pulled into the lead-in groove, the rotating arm is rotated so that the locking bar is detachable from the latching portion, and when the lead-in member is pulled into the lead-in groove, And is withdrawn from the inlet groove when the switchgear door is closed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an interlock device of a switchgear door,

The present invention relates to an interlock device of a switchgear door, and more particularly to an interlock device of a switchgear door configured to allow a door of a switchgear to be opened only when the system of the switchgear is in a grounded state, will be.

2. Description of the Related Art Generally, an electric distribution board is an electric facility for supplying industrial power to a user safely. Various electric apparatuses including a breaker are stored in a state where the electric apparatus is safely insulated and a door is installed on the front.

On the other hand, the conductor inside the switchboard is energized with high voltage and current, so operators and users should pay special attention to safety. If it is necessary to check the switchboard and internal devices, In this case, since the operator is exposed to the risk factors, the system inside the switchboard must be opened and moved to a safe position (Isolated).

Specifically, when the door of the ASSEMBLY is to be opened, the circuit on the load side should be open or grounded.

Therefore, it is necessary to provide a locking device which can open the door of the switchboard only when the circuit on the load side is open or in the grounded state and the door of the switchboard is not opened when the load side circuit is closed or not grounded.

Korean Patent Publication No. 10-2011-0091205

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve at least some of the above problems occurring in the prior art, and it is an object of the present invention to provide an interlock device for an electric vehicle control panel door without opening a door, .

According to an aspect of the present invention, there is provided a circuit board comprising: a rotary plate for implementing a cut-off, a pull-in, and a grounding state of a circuit device provided in an electric distribution board through a rotary operation and having a lead- A drawing member which is drawn into the lead-in groove when the circuit device is in a ground state; A rotary arm provided on a main body frame of the power distribution board, rotated by the pulling-in operation of the pulling member, and having a hook-shaped hook at one end; And a locking bar provided on the switchgear door and configured to be caught by the latching portion when the switchgear door is closed; Wherein when the pulling-in member is pulled into the lead-in groove, the rotating arm is rotated so that the locking bar is detachable from the latching portion, and when the lead-in member is pulled into the lead-in groove, And provides an interlock device of the switchgear door that is drawn out of the inlet groove when the switchgear door is closed.

In one embodiment, the wire member may further include a wire member connected between the pulling member and the rotating arm, and rotating the pulling arm when the pulling member is moved.

Further, in one embodiment, the rotary arm has a connecting portion to which the wire member is connected at the other end; And a rotary shaft portion between one end and the other end.

Further, in one embodiment, the rotary arm may be provided at one end with a guide portion protruding to face the engagement portion and configured to be pushed by the locking bar while the switchboard door is closed.

Further, in one embodiment, the guide portion may be formed to extend linearly in the longitudinal direction of the rotary arm.

Further, in one embodiment, an elastic member for elastically pressing the pulling member in the pull-in groove direction may be further included.

Further, in one embodiment, a bracket for supporting the rotary arm to the main body frame of the power distribution board may be further included.

Further, in one embodiment, the bracket may be formed with a locking-bar receiving groove that is received in the locking bar and is cut in a shape corresponding to the movement locus of the locking bar.

According to another aspect of the present invention, there is provided a display device comprising: a main frame including a circuit device therein; A driving unit provided in the main body frame and including a rotating plate having a cut-in, a pulled-in and a grounded state of the circuit device through a rotating operation and a drawn groove on one side of the rim; A door provided on the front surface of the body frame in a hinged form; And a pulling member provided in the driving unit and drawn into the lead-in groove when the circuit device is in a grounded state, and a hook portion provided on the main body frame and rotated in accordance with a pull- A locking arm provided on the door and adapted to be hooked on the locking portion when the door is closed; and a wire connected between the drawing member and the rotary arm to pull the rotary arm to rotate when the drawing member is moved, And an interlock device including a member, which is detachable from the engaging portion when the pulling-in member is pulled into the lead-in groove, and the rotary arm is rotated so that the locking bar is detachable from the engaging portion, Thereby restricting the rotation of the rotary plate and providing an electric switchboard to be drawn out from the inlet groove when the switchgear door is closed.

According to an embodiment of the present invention having such a configuration, the door can be unlocked only when the circuit device inside the switchgear is in the grounded state, and the operation of the driving unit is restricted when the door is opened, There are advantages.

1 is a perspective view of an ASSEMBLY according to an embodiment of the present invention;
2 is a perspective view of an interlock device according to one embodiment of the present invention.
FIG. 3A is a perspective view showing the unlocked state of the interlock device shown in FIG. 2; FIG.
FIG. 3B is a plan sectional view showing a rotary arm and a locking bar of the interlock device shown in FIG. 3A; FIG.
Fig. 4A is a perspective view showing a state in which the door of the interlock device shown in Fig. 2 is opened. Fig.
4B is a planar sectional view showing the rotary arm and the locking bar of the interlock device shown in Fig. 4A. Fig.
FIG. 5A is a perspective view showing a state in which the door of the interlock device shown in FIG. 2 is completely opened; FIG.
FIG. 5B is a plan sectional view showing a rotary arm and a locking bar of the interlock device shown in FIG. 5A; FIG.
FIG. 6A is a perspective view showing a locked state of the interlock device shown in FIG. 2. FIG.
6B is a plan sectional view showing a rotary arm and a locking bar of the interlock device shown in Fig. 6A; Fig.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Furthermore, the singular forms "a", "an," and "the" include plural referents unless the context clearly dictates otherwise.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

First, referring to FIG. 1, a switchboard according to an embodiment of the present invention will be described.

1, the switchboard 100 according to an exemplary embodiment of the present invention may include a main body frame 110, a driver 120, a door 130, and an interlock device 200.

The main body frame 110 constitutes an external appearance of the switchboard 100 according to an embodiment of the present invention and includes various driving devices such as a circuit breaker, a disconnecting switch, a grounding switch, a load switch, A space is provided.

The driving unit 120 is provided inside the main body frame 110 and is mechanically connected to a movable contact included in a circuit breaker, a disconnecting unit, a grounding switch, a load switch, and the like so that the movable contact can be connected to and disconnected from the fixed contact. .

In one embodiment, the driving unit 120 may include a driving shaft 122 and a rotating plate 210, as shown in FIGS. 3A, 4A, 5A, and 6A.

Here, the driving shaft 122 is connected to a movable shaft (not shown) for moving the movable contact so that the rotational behavior thereof coincides with each other, thereby implementing a blocking, inputting, and grounding state of circuit devices provided in the switchboard 100 .

The rotation plate 210 is connected to the drive shaft 122 to rotate the drive shaft 122 through a rotation operation.

The rotating plate 210 may be configured to rotate through various types of mechanical devices such as a manual handle and a driving motor.

In one embodiment, the swash plate 210 may have a recessed groove 212 formed at one side of the rim concavely in the rotational axis direction.

The inlet member 220 included in the interlock device 200 to be described later may be introduced into the inlet groove 212.

The rotary plate 210 can be configured so that the lead-in groove 212 is arranged to face the lead-in member 220, which will be described later, at a position where the circuit device is grounded.

The door 130 may be provided on the front surface of the main body frame 110 in the form of a hinge.

The door 130 is provided to open the inside of the switchboard 100 to inspect, operate and maintain the devices inside the switchboard 100 according to an embodiment of the present invention.

The interlock device 200 includes a pulling member 220 provided on the driving unit 120, a rotary arm 240 provided on the body frame 110, a locking bar 280 provided on the door 130, And a wire member 260 connected between the pulling member 220 and the rotary arm 240.

The interlock device 200 is configured such that the door 130 can be opened only when the circuit device is in the grounded state by driving the driving part 120 and is not opened when the circuit device is interrupted and closed .

The switchboard 100 according to an embodiment of the present invention is configured such that the door 130 can be opened through the interlock device 200 only when the system is in a grounded state so that a safety accident There is an advantage in that it can be prevented in advance.

The interlock device 200 included in the switchgear 100 according to an embodiment of the present invention will be described in detail with reference to FIG. 2 to FIG. 6B.

Hereinafter, an interlock device 200 according to an embodiment of the present invention will be described with reference to FIGS. 2 to 6B.

2 to 6B, an interlock device 200 according to an embodiment of the present invention includes a rotation plate 210, a pulling member 220, an elastic member 230, a rotary arm 240, a bracket (not shown) 250, a wire member 260, and a locking bar 280.

The rotary plate 210 may be provided with a cut-in, a closed, and a grounded state of the circuit devices provided in the switchboard 100 through a rotating operation, and may include a lead-in groove 212 at one side of the rim.

The rotating plate 210 is substantially the same as the rotating plate 210 included in the driving unit 120 of the switchboard 100 according to the embodiment of the present invention, and thus a detailed description thereof will be omitted.

The pulling member 220 may be retracted into the lead-in groove 212 when the circuit device is in a grounded state.

Such a pulling member 220 may be configured in a bar shape in which a part of its front end can be drawn into the inlet groove 212.

In one embodiment, a support bracket 222 that supports the pulling member 220 in a linearly movable manner may be provided.

The elastic member 230 may elastically press the pulling member 220 in the direction of the inlet groove 212.

The elastic member 230 applies pressure in the direction of the lead-in groove 212 to the lead-in member 220 so that when the circuit device is in a grounded state, that is, when the lead-in groove 212 is arranged to face the lead- The draw-in member 220 can be pushed into the draw-in groove 212.

In an embodiment, the elastic member 230 may be composed of a compression spring having one end supported by the pulling member 220 and the other end supported by the support bracket 222, but the present invention is not limited thereto.

The rotary arm 240 is provided in the main body frame 110 of the switchboard 100 and is configured to be rotated in one direction in accordance with the pulling-in operation of the pulling member 220.

The rotary arm 240 may include a locking portion 242 and a guide portion 244 at one end thereof.

The latching portion 242 may extend from the one end of the rotary arm 240 in the form of a hook.

One end of the rotary arm 240 is bent in the direction of the main body frame 110 so that the locking bar 280 may be hooked to prevent the locking bar 280 from moving. do.

The guide part 244 is protruded from one end of the rotary arm 240 so as to face the engaging part 242 and is configured to be pushed by a locking bar 280 to be described later while the door 130 is closed .

In one embodiment, the guide portion 244 may extend linearly from one end of the rotary arm 240 along the longitudinal direction of the rotary arm 240, and may be formed longer than the length of the engagement portion 242 desirable.

The guide portion 244 may be pushed by the locking bar 280 when the door 130 is closed so that the rotary arm 240 can be rotated to the original position when the door 130 is closed.

In addition, in one embodiment, the rotary arm 240 may include a connection portion 246 to which a wire member 260 to be described later is connected at the other end, and a rotary shaft portion 248 between one end and the other end.

Here, the rotary arm 240 may be rotatably installed on the bracket 250, which will be described later, via the rotary shaft portion 248.

The bracket 250 can support the rotary arm 240 to the body frame 110 of the switchboard 100.

In one embodiment, the bracket 250 can be bolted or welded to the body frame 110, and the rotary shaft portion 248 of the rotary arm 240 is fixed and a wire support member 270 And may have a portion of a flat plate shape.

Also, in one embodiment, the locking-bar receiving groove 252 may be formed in the plate-shaped portion of the bracket 250.

The locking bar receiving groove 252 may be formed by cutting the body of the bracket 250 in a shape corresponding to the movement locus of the locking bar 280,

The locking bar receiving groove 252 guides the movement path of the locking bar 280 so that the locking bar 280 and the supporting frame 282 to be described later are deformed by the use of the door 130 for a long time, It is possible to prevent a problem that the locking bar 280 is not securely fastened to the latching portion 242 even when the door 130 is closed due to the occurrence of a clearance at the fastening portion of the door 130 and the door 130. [

The wire member 260 is connected between the pulling member 220 and the rotary arm 240 so that the rotary member 240 can be rotated by pulling the pulling member 220 when the pulling member 220 is moved.

The wire member 260 may have one end connected to the rear end of the pulling member 220 and the other end connected to the connecting portion 246 of the rotary arm 240. [

This allows the rotary arm 240 to be rotated through the wire member 260 when the drawing member 220 is drawn into the drawing groove 212 of the rotary plate 210 in the grounded state of the circuit device.

The wire member 260 is preferably made of a material having a low elasticity so that the movement of the pulling member 220 can be stably transmitted to the rotary arm 240.

In order to prevent the wire member 260 extending from the connection portion 246 of the rotary arm 240 from being caught by the rotary arm 240 and the locking bar 280, A wire support member 270 for supporting the member 260 so as to be spaced apart from the rotary arm 240 and the locking bar 280 may be additionally provided.

The locking bar 280 is provided on the door 130 so that the locking bar 280 is engaged with the latching portion 242 of the rotary arm 240 when the door 130 is closed. The locking bar 280 may serve as a coupling medium between the locking part 242 and the door 130 so that the door 130 can be locked by the locking part 242 of the rotary arm 240.

In one embodiment, the locking bar 280 may be secured to the door 130 via the support frame 282.

In addition, in one embodiment, the locking bar 280 may be a round bar having an outer surface rounded, but is not limited thereto.

Hereinafter, the operation principle of the interlock device 200 according to one embodiment of the present invention will be described with reference to FIGS. 3A to 6B. FIG.

FIGS. 3A and 3B are a perspective view and a top cross-sectional view showing the unlocked state of the interlock device 200, that is, a state in which the door 130 can be opened.

When the circuit device is in the grounded state, the lead-in groove 212 is disposed at a position opposite to the lead-in member 220 as shown in FIG.

At this time, the door 130 is closed. The rotary arm 240 may be horizontally disposed on the door 130 as shown in Figure 3B and the locking bar 280 may be disposed between the locking portion 242 and the guide portion 244 As shown in FIG.

When the door 130 is closed, the movement of the guide portion 244 is restricted by the locking bar 280, so that the rotary arm 240 is not rotated, and the drawing member 220 connected to the wire member 260 Can be held in a state where they are not pulled into the lead-in groove 212.

4A and 4B are a perspective view and a plan sectional view of the interlock device 200 when the door 130 is opened.

When the circuit device is in the grounded state, the attracting member is drawn into the lead-in groove 212 of the rotary plate 210 by the pressure of the elastic member 230.

At this time, when the connection portion 246 of the rotary arm 240 is pulled through the wire member 260, the rotary arm 240 can rotate clockwise in the drawing.

At this time, when the door 130 is opened by the operator, the guide portion 244 of the rotary arm 240 is moved by the force that the pulling member 220 is pulled into the inlet groove 212 by the elastic member 230, And is rotated in accordance with the movement of the locking bar 280 in a state of being in contact with the locking bar 280.

4B, since the rotary arm 240 is rotated while the guide portion 244 is kept in contact with the locking bar 280, It is possible to escape the movement trajectory.

When the door 130 can be opened as described above, since the pulling member 220 is pulled into the pulling groove 212, the pulling member restricts the rotation of the rotating plate 210.

Therefore, when the door 130 is opened, the rotating plate 210 is not rotated, so that the circuit device can not be operated in the blocking and closing states.

5A and 5B are a perspective view and a flat cross-sectional view of the interlock device 200 when the door 130 is completely opened.

When the door 130 is opened by the operator as described above in the grounded state of the circuit device, the pulled-in member 220 is retained in the pulled-in groove 212 and the rotary arm 240 is held by the wire member 260 ) Is maintained.

5A and 5B, the engaging portion 242 is disposed at a position deviated from the locking bar receiving groove 252, and the guide portion 244 is disposed on the locking bar receiving groove 252 .

In this state, when the door 130 is closed by the operator, the locking bar 280 presses the guide portion 244 while moving along the locking-bar receiving groove 252, It is possible to return to the position shown in FIG. 3B.

At this time, the wire member 260 is pulled by the rotation of the rotary arm 240 and the pulling member 220 can be removed from the lead-in groove 212 by pulling the wire member 260.

When the drawer member 220 is detached from the lead-in groove 212 by the door 130 being closed as described above, the rotary plate 210 of the drive unit 120 is rotatable, so that the circuit device is operated in the cut- .

6A and 6B are a perspective view and a flat cross-sectional view showing a locked state of the interlock device 200. [

When the circuit device is in the cut-off state and not in the grounded state, the lead-in groove 212 of the rotary plate 210 is disposed at a position not opposed to the lead-in member 220.

As a result, the pulling member 220 is caught by the rim of the rotating plate 210 and is no longer moved, and the rotating arm 240 is not subjected to the force pulled by the wire member 260, do.

At this time, when a force is applied in a direction in which the door 130 is opened, the locking bar 280 moves and is caught by the latching part 242.

The locking bar 280 is caught by the latching portion 242 and the movement is limited, so that the door 130 can not be opened.

The door 130 can be unlocked only when the circuit device inside the switchboard 100 is in the grounded state and when the door 130 is opened Since the operation of the driving unit 120 is limited, there is an advantage that a safety accident is prevented.

While the present invention has been particularly shown and described with reference to particular embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention as defined by the following claims I would like to make it clear.

100: Switchboard 110: Main frame
120: driving part 122: driving shaft
130: Door 200: Interlock device
210: spindle 212: inlet groove
220: Retraction member 222: Support bracket
230: elastic member 240: rotary arm
242: Retaining part 244: Guide part
246: connecting portion 248:
250: Bracket 252: Locking bar receiving groove
260: wire member 270: wire support member
280: Locking bar 282: Support frame

Claims (9)

A rotary plate for implementing a cut-off, a pull-in, and a grounding state of a circuit device provided in the switchboard through a rotary operation, and having a lead-in groove at one side of the rim;
A drawing member which is drawn into the lead-in groove when the circuit device is in a ground state;
A rotary arm provided on a main body frame of the power distribution board, rotated by the pulling-in operation of the pulling member, and having a hook-shaped hook at one end; And
A locking bar provided on the switchgear door and configured to be caught by the latching portion when the switchgear door is closed; Lt; / RTI >
Wherein when the pulling-in member is pulled into the lead-in groove, the rotary arm is rotated so that the locking bar can be detached from the latching portion,
Wherein the pulling member restrains rotation of the rotating plate when the pulling-in member is pulled into the pulling-in groove, and is pulled out of the pulling-out groove when the power-distribution-unit door is closed.

The method according to claim 1,
Further comprising a wire member connected between the pulling member and the rotary arm and configured to pull and rotate the rotary arm when the pulling member is moved.
3. The method of claim 2,
The rotary arm
A connecting portion to which the wire member is connected at the other end; And
A rotating shaft portion between one end and the other end;
The interlock device of the switchgear door.
The method according to claim 1,
Wherein the rotary arm is provided at one end with a guide portion protruding to face the engaging portion and configured to be pushed by the locking bar while the switchboard door is closed.
5. The method of claim 4,
Wherein the guide portion extends linearly in the longitudinal direction of the rotary arm.
The method according to claim 1,
Further comprising an elastic member for elastically pressing the pull-in member in the direction of the pull-in groove.
The method according to claim 1,
Further comprising a bracket for supporting the rotary arm to the main frame of the power distribution board.
8. The method of claim 7,
Wherein the bracket is provided with a locking bar receiving groove that can receive the locking bar and is cut in a shape corresponding to the movement locus of the locking bar.
A body frame in which a circuit device is incorporated;
A driving unit provided in the main body frame and including a rotating plate having a cut-in, a pulled-in and a grounded state of the circuit device through a rotating operation and a drawn groove on one side of the rim;
A door provided on the front surface of the body frame in a hinged form; And
A rotation member provided in the main body frame and rotated in accordance with a pulling-in operation of the pulling member and having a hook-shaped hooking portion at one end, the pulling member being provided in the driving unit and being drawn into the pulling- A locking bar provided on the door and adapted to be hooked on the locking part when the door is closed; a wire member connected between the pulling member and the rotating arm to pull the rotating arm when the pulling member is moved, And an interlock device configured to allow the rotary arm to be detached from the locking part when the drawing member is drawn into the inlet groove,
Wherein the pulling member restrains rotation of the rotating plate when the pulling-in member is pulled into the pulling-in groove, and is pulled out of the pulling-out groove when the power-distribution-unit door is closed.

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