KR102016439B1

KR102016439B1 - Circuit breaker

Info

Publication number: KR102016439B1
Application number: KR1020150074783A
Authority: KR
Inventors: 장춘오
Original assignee: 현대일렉트릭앤에너지시스템(주)
Priority date: 2015-05-28
Filing date: 2015-05-28
Publication date: 2019-09-03
Also published as: KR20160141116A

Abstract

The circuit breaker according to the present invention can be expected to have an effect that the main body is stably fixed to the cradle by connecting the main body introduced into the cradle in a hook fastening manner, and the main body can be easily separated from the cradle.

Description

Circuit breaker {CIRCUIT BREAKER}

The present invention relates to a circuit breaker in which a circuit breaker body introduced into a cradle is hooked to the cradle.

A circuit breaker is an electric switch that turns off the arc by using compressed air. When a large current flows in the line, the circuit breaker disconnects the line and prevents the current from flowing. The circuit breaker separates the fixed contactor from the movable contactor to disconnect the line connection, and blows off the arc generated when the line connection is disconnected by compressed air. When a large current flows in the line, heat is generated due to this, and the circuit breaker can determine whether there is an overcurrent by measuring the temperature caused by the generated heat.

The circuit breaker generally has a structure in which the cradle and the main body are coupled to each other, and the main body has a structure in which the main body slides into the cradle and is pulled in. In the conventional circuit breaker, the coupling between the cradle and the main body is unstable, and thus the main body is separated from the cradle, causing injury to an operator or failure of the circuit breaker.

Patent Documents: Korean Patent Publication No. 2014-0036624

The present invention has been made to solve the above problems, the main body is easily fastened to the cradle but can be stably fixed, to provide a circuit breaker that the main body can be easily separated from the cradle There is a purpose.

Circuit breaker according to an embodiment of the present invention for achieving the above object is a cradle including a body guide portion and the latch; And a locking member, the breaker body being connected to the cradle by the hook member connected to the clasp by entering the cradle along the body guide part and connected to the cradle.

In addition, the circuit breaker main body, the rotating shaft; and the locking member, the frame; A rotating part formed on the frame so as to be connected to the rotating shaft and rotate; And a hook portion connected to the frame and connected to the hook in a hook fastening manner.

In addition, the locking member may include an elastic providing unit for providing an elastic force to the locking unit by connecting the locking unit and the breaker main body so that the locking unit is connected to the locking unit in a hook fastening manner.

In addition, the breaker body, a rotation limiting portion for limiting the rotation of the locking member; includes, the locking member is connected to the rotation limiting portion, the rotation limiting projection connected to the frame so that rotation is limited; It may include.

In addition, the latch may be provided in a shape in which an orthogonal cross section in a direction toward the locking portion facing toward the locking portion becomes smaller when connected in a hook fastening manner.

In addition, in the process of the breaker body is drawn along the body guide portion, a line that virtually connects the movement of one point of the breaker body is called LOM, and the shortest distance between the latch and the LOM is called C, The shortest distance between the locking portion and the LOM is referred to as D, the distance between the rotational center and the LOM is referred to as H, the longest distance between the locking portion and the LOM is referred to as E, and the rotational center of the rotation is as follows. When the shortest distance between the locking portion and L is L, the circuit breaker according to the embodiment of the present invention may rotate when the blocking body is pushed into the cradle so that the locking portion is pushed to the latch. Equation 1 can be satisfied.

Equation 1 E> C

In addition, the circuit breaker according to an embodiment of the present invention may satisfy the following Equation 2 so that the engaging portion can be connected to the latch in a hook coupling manner.

Equation 2 H <L + C

Circuit breaker according to an embodiment of the present invention, through the above configuration, the main body is easily fastened to the cradle can be fixed stably, the main body has an effect that can be easily separated from the cradle.

1 is a perspective view of a circuit breaker according to an embodiment of the present invention.
2 is a perspective view of a cradle according to an embodiment of the present invention.
Figure 3a is an exploded perspective view showing the side of the breaker body according to an embodiment of the present invention.
Figure 3b is a view showing the appearance of the breaker main body side in the cradle according to an embodiment of the present invention.
Figure 3c is a front view showing the side of the breaker body according to an embodiment of the present invention.
Figures 4a, b, c is a view showing in sequence the state in which the breaker body is connected to the cradle according to an embodiment of the present invention.
Figures 5a, b, c is a view showing in sequence the state in which the breaker body is separated from the cradle according to an embodiment of the present invention.
6 is a perspective view of a locking member according to an embodiment of the present invention.
7 is a front view of the locking member according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described a specific embodiment of the present invention. However, embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. In addition, the embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art. Shape and size of the elements in the drawings may be exaggerated for more clear description.

1 is a perspective view of a circuit breaker according to an embodiment of the present invention, Figure 2 is a perspective view of a cradle according to an embodiment of the present invention. Figure 3a is an exploded perspective view showing a circuit breaker main body side according to an embodiment of the present invention, Figure 3b is a view showing the appearance of the breaker main body side in accordance with an embodiment of the present invention from within the cradle, Figure 3c Front view showing a circuit breaker main body side according to an embodiment of the present invention. Figures 4a, b, c is a view showing in sequence the state in which the breaker body is connected to the cradle according to an embodiment of the present invention. Figures 5a, b, c is a view showing in sequence the state in which the breaker body is separated from the cradle according to an embodiment of the present invention. 6 is a perspective view of a locking member according to an embodiment of the present invention, Figure 7 is a front view of the locking member according to an embodiment of the present invention.

An embodiment of the present invention related to FIG. 1 will be described. The circuit breaker 1 according to an embodiment of the present invention may include a cradle 10 and a breaker body 20. The cradle 10 may be connected to the breaker main body 20, and when the connection of the breaker main body 20 is released and falls, the cradle 10 may be a hazard to the worker due to the weight. In order to prevent this, the connection between the breaker body 20 and the cradle 10 may be performed by a hook fastening method. To this end, the breaker body 20 may include a locking member 200.

An embodiment of the present invention related to FIG. 2 will be described. Cradle 10 according to an embodiment of the present invention may include a body guide portion 11 and the latch 12. The body guide part 11 guides the breaker body 20 to be inserted into the cradle 10, and the locking member 200 is connected to the latch 12 in a hook fastening manner. The body guide part 11 and the latch 12 may be provided in singular, or may be provided in plural. In FIG. 2, two body guide parts 11 and two latches are provided.

An embodiment of the present invention related to Figs. 3A, B, and C will be described. Locking member 200 according to an embodiment of the present invention may include a frame 210, the locking portion 220 and the elastic providing portion 230. A rotating part 211 is formed in the frame 210 and may be connected to the breaker body 20. In addition, the circuit breaker main body 20 may include a rotation shaft 21, and the rotation part 211 may be connected to the rotation shaft 21 to allow the locking member 200 to rotate.

When the breaker main body 20 enters the cradle 10 along the main guide portion 11, the catching portion 220 may be connected to the catch 12 in a hook fastening manner. Since the elastic providing unit 230 may provide the elastic force to the locking unit 220 by connecting the locking unit 220 and the circuit breaker body 20, the circuit breaker body 20 is the body guide portion ( When entering the cradle 10 along 11, the pushing force toward the latch 12 may be maintained even if the locking portion 220 is pushed against the latch 12. The latching portion 220 changes the positional relationship with the latching portion 220 while being pushed against the latching portion 12, and the hooking portion is fastened by the changed positional relationship with the latching portion 220 when the latching portion 220 is pushed by a predetermined distance. Can be connected in a manner.

The elastic force provided to the locking portion 220 is provided as a rotational force by the action of the rotating unit 211 and the rotating shaft 21. Therefore, it may be necessary to suppress the elastic force provided by the elastic providing unit 230 in a state in which the locking unit 220 is not in contact with the latch 12. By such a necessity, the locking member 200 may include a rotation limiting protrusion 240, and the breaker body 20 may include a rotation limiting portion 22. The rotation limiter 22 may be formed in the shape of a hole in the circuit breaker main body 20, and may provide a space in which the rotation limiter 240 may rotate within a predetermined angle range. .

An embodiment of the present invention related to Figs. 4A, B, and C will be described. 4a, b, and c are diagrams sequentially illustrating how the breaker body 20 is connected to the cradle 10 according to an embodiment of the present invention. As shown in Figure 4a, in the state that the engaging portion 220 is not in contact with the latch 12, the elastic force may act on the engaging portion 220, but the rotation limit projection 240 and the rotation limit By the action of the unit 22 may prevent the locking member 200 does not rotate. That is, the locking unit 220 may not rotate.

As shown in FIG. 4B, when the breaker body 20 enters the cradle 10 while the catching part 220 is in contact with the catch 12, the catching part 220 acts on the catching part 220. When the force pushed by the latch 12 is greater than the elastic force, the locking portion 220 may rotate about the rotation shaft 21. The locking portion 220 may be provided with a force pushing the latch 12 by the elastic providing portion 230 even if the locking portion 220 is pushed by the latch 12, and the locking portion 220 may be provided with the latch 12. Since the rotation can be rotated about the rotating shaft 21 while being in contact with), the positional relationship of the locking portion 220 with respect to the latch 12 can be changed. That is, the locking portion 220 may move toward one end of the latch 12 while being in contact with the latch 12.

As such, when the latching part 220 moves toward one end of the latch 12 and reaches one end of the latch 12, as shown in FIG. 4C, the latch 12 is locked. In the state in which the part 220 cannot be pushed out, the locking part 220 may be connected to the latch 12 by a hook fastening method by the elastic force of the elastic providing part 230.

An embodiment of the present invention related to Figs. 5A, B, and C will be described. 5a, b, and c are diagrams sequentially showing how the breaker body 20 is separated from the cradle 10 according to an embodiment of the present invention. As shown in FIG. 5A, since the locking member 200 and the latch 12 are coupled in a hook manner, in order to separate the breaker main body 20 from the cradle 10, the locking portion 220 is provided. May need to be rotated. As shown in FIG. 5A, by rotating the locking portion 220 counterclockwise, the relative positional relationship between the locking portion 220 and the locking portion 12 may be changed. That is, when the breaker body 20 moves in the direction in which the breaker body 20 is separated from the cradle 10, the catching part so that a force does not act between the catching part 220 and the catch 12. 220 may be rotated.

An embodiment of the present invention related to FIGS. 6 and 7 will be described. As shown in FIG. 6, in a Cartesian coordinate system composed of x, y, and z axes that are orthogonal to each other in a three-dimensional space, the plane in which the locking member 200 rotates may be set to be parallel to the y-z plane. In this case, the engaging portion 220 may be provided in a shape protruding parallel to the x-axis in the frame 210. Through such a configuration, when the latch 12 pushes the latch 220, the latch 12 may not push the frame 210 at the same time.

When the latch 12 is connected in a hook fastening manner, an orthogonal cross section in a direction facing the locking portion 220 may be smaller toward the locking portion 220. In FIG. 7, the direction toward the locking portion 220 facing each other when fastening is downward, and the orthogonal cross section becomes smaller as the locking collar 12 faces downward. When the orthogonal cross section of the latch 12 becomes smaller toward the latch portion 220, the hook portion 220 and the latch 12 may be easily connected in a hook fastening manner.

While the locking portion 220 rotates while pushing the locking portion 12, after the locking portion 220 reaches one end of the locking portion 12, the locking portion 220 moves rapidly. The catching part 220 and the catching part 12 may be connected in a hook fastening manner only when the catching part 220 reaches a state that does not provide a pushing force to the catching part 12. By making the orthogonal cross section of the clasp 12 smaller toward the direction toward the clasp 220, after the clasp 220 reaches one end of the clasp 12, the clasp 220 ) Is rapidly moved so that the locking portion 220 does not provide a pushing force to the latch 12.

When the breaker main body 20 enters the cradle 10 along the body guide part 11, the locking part 220 may rotate while being pushed to the latch 12. The positional relationship between 220 and the latch 12 may be set. In the process of the breaker body 20 is drawn along the body guide portion 11, a line that virtually connects the movement of one point of the breaker body 20 is referred to as LOM, and the latch 12 and the The shortest distance between the LOM is referred to as C, the shortest distance between the engaging portion 220 and the LOM is referred to as D, and the distance between the rotation center of the rotating part 211 and the LOM is referred to as H, and the engaging portion If the longest distance between the 220 and the LOM is called E, and the shortest distance between the rotational center of the rotating part 211 and the locking part 220 is L, then E> C may be satisfied. When E <C, the locking portion 220 may not be pushed by the latch 12.

When the locking portion 220 is pushed and rotated by the latch 12, the locking portion 220 may move toward one end portion of the locking portion 220 and the latch 12. As the locking portion 220 rotates, the distance of the point of the locking portion 220 contacting the latch 12 closest to the LOM should be smaller than the C, so that the locking portion 220 is the latch ( 12) can be connected in a hooked manner. Here, the distance at which the point of the latching portion 220 in contact with the latch 12 is closest to the LOM is H-L, as shown in FIG. 7. That is, the distance H minus the distance L. Expressed by the equation, by satisfying H-L <C it may be able to be connected to the engaging portion 220 to the latch 12 in a hook coupling manner. When L is binomially expressed in the above formula, H <L + C, H <L + C.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

1: circuit breaker 10: cradle
11: body guide part 12: latch
20: breaker main body 21: rotating shaft
22: rotation limit 200: locking member
210: frame 211: rotating part
220: locking portion 230: elastic providing unit
240: rotation limit projection
LOM: A line that virtually connects the movement of a point on the breaker body.
C: Shortest distance between the brace and the LOM
D: Shortest distance between the catch and the LOM
E: longest distance between the latch and the LOM
H: Distance between the rotation center of the rotating part and the LOM
L: shortest distance between the rotation center of the rotating part and the locking part

Claims

A cradle comprising a body guide part and a latch; And
Includes a locking member, the circuit breaker body is connected to the cradle by the hook member is connected to the latch by the hook member is introduced into the cradle along the body guide portion,
The circuit breaker main body includes a rotation shaft;
The locking member, the frame; A rotating part formed on the frame so as to be connected to the rotating shaft and rotate; And a hook portion connected to the frame and connected to the hook in a hook fastening manner.
When the latch is connected in a hook fastening manner, a circuit breaker having a shape in which an orthogonal cross section in a direction facing the locking portion becomes smaller toward the locking portion.

delete

The method of claim 1,
The locking member, the circuit breaker comprising; an elastic providing portion for providing an elastic force to the locking portion by connecting the locking portion and the breaker body, so that the locking portion is connected to the latch in a hook fastening manner.

The method of claim 3,
The breaker main body includes a rotation limiting unit for limiting rotation of the locking member.
The locking member, the circuit breaker including; a rotation limiting projection connected to the frame so that rotation is limited to the rotation limiting portion.

delete

The method of claim 1,
In the process of drawing the circuit breaker main body along the body guide part, a line that virtually connects the movement of one point of the circuit breaker main body is called LOM,
The shortest distance between the latch and the LOM is called C,
The distance between the rotational center of the rotating unit and the LOM is called H,
The longest distance between the locking portion and the LOM is called E,
When L is the shortest distance between the rotation center of the rotating part and the locking part,
And a circuit breaker that satisfies Equation 1 below so that when the breaker main body enters the cradle, the catch part can rotate while being pushed by the catch.
Equation 1 E> C

The method of claim 6,
Circuit breaker that satisfies the following equation 2 so that the engaging portion can be connected to the latch in a hook coupling manner.
Equation 2 H <L + C