KR20050004658A - Electronic mold case circuit breaker having function of use limitation - Google Patents

Abstract

PURPOSE: An electronic mold case circuit breaker is provided to easily limit use of the breaker, by permitting the breaker to be used only when a key is inserted into the breaker. CONSTITUTION: An electronic mold case circuit breaker comprises an outer case(1), an insertion portion(16), an inset key(20), a vertically moving member, and a cross bar. The outer case accommodates components of the electronic mold case circuit breaker. The insertion portion is formed at a surface of the outer case. The key is arranged to be inserted into the insertion portion, and has a permanent magnet(21) formed on an upper portion of the key and a protrusion formed at the other side from the permanent magnet. The vertically moving member has a side fixed at the outer case and the other side where a magnet is mounted. The vertically moving member has an intermediate portion where a spring is mounted such that the magnet elastically moves in a vertical direction by the permanent magnet of the key. The cross bar controls operation of a handle(4), by being rotated by the vertical elastic movement of the vertically moving member.

Description

ELECTRICAL MOLD CASE CIRCUIT BREAKER HAVING FUNCTION OF USE LIMITATION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic mold case circuit breaker (MCCB) which automatically cuts off a circuit in the event of an overload and a short circuit accident to protect the circuit and the load. In particular, the present invention relates to an electronic circuit breaker having a use limit function that allows a user to restrict the use of the circuit breaker simply and conveniently.

In general, an electronic wiring breaker is mainly installed in a switchgear in a factory, a building, etc., and is a switchgear that supplies or cuts power to the load side under no load, and an abnormal phenomenon occurs in the load circuit during use of the load. When a large current exceeding the load current flows, it acts as a circuit breaker that automatically cuts off the power supply from the power supply to the load to protect the converter wires and load-side equipment.

The electronic circuit breaker includes a detector mechanism, an opening / closing mechanism portion, an arc extinguishing portion, a trip device portion, and the like in the cover and the enclosure forming the enclosure, and cut off the power by a trip operation when an abnormal current occurs.

The trip device unit detects an overcurrent flowing in the circuit breaker, and according to a method of tripping the circuit breaker, the bending characteristic of the bimetal and the viscosity of the thermoelectric type and silicone oil using the fixed and movable iron cores. There are largely three types, such as full electronic using and electronic using semiconductor devices.

Here, trip refers to an operation of automatically shutting off the power supply by detecting an abnormal current in the breaker itself instead of artificially opening and closing the breaker when an abnormal current occurs in the circuit breaker.

Hereinafter, an electronic circuit breaker according to the related art will be described with reference to the accompanying drawings.

1 is a perspective view of a main body of an electronic circuit breaker according to the related art.

As shown in FIG. 1, the electronic wiring breaker includes an enclosure 1 accommodating various electrical components, a main cover 2 coupled to an upper portion of the enclosure 1, and a main cover 2. It comprises an auxiliary cover (3) coupled to the top to be opened and closed, and a handle (4) for operating the electronic circuit breaker.

At this time, the upper part of the main cover (2) has a space portion is formed on both sides to accommodate various accessories (11 in Fig. 3a), for example, alarm switch, auxiliary switch, remote trip device, etc. When the user wishes to mount the accessory on the circuit breaker, the auxiliary cover 3 is rotated in one direction from the main cover 2 to be opened, and then the accessory is selectively coupled to the space part of the main cover 2. use.

Here, the auxiliary cover 3 can be opened and closed when necessary as one end is rotatably hinged on the main cover 2, and the other end of the auxiliary cover 3 is a fastening screw (not shown). By this structure, it is possible to mount it on the main cover 2 of the breaker at any time.

In addition, at the left and right sides of the main cover 2, wire outlets (not shown) are formed to draw out the wires (not shown) connected to the accessory to the outside of the breaker when the accessory is mounted. .

2 is an internal configuration diagram of an electronic circuit breaker according to the prior art.

As shown in FIG. 2, the internal configuration of the electronic circuit breaker includes a fixed contactor 5 for receiving power from a converter and delivering it to a load side, an opening and closing mechanism 6 for closing and opening, and detecting an abnormal current. It comprises a detector sphere (7), an arc extinguishing portion (8) for extinguishing and cooling the arc generated during a short circuit accident.

The electronic wiring breaker is reset by the handle 4 which is assembled inside the enclosure, and is turned on by the operation of the handle 4 after the crossbar 10 is reset. It will turn on / off.

3A and 3B are operational state diagrams of an electronic circuit breaker according to the prior art, and FIG. 3A is an operation state diagram in an OFF operation, and FIG. 3B is an operation state diagram in an ON operation.

The accessories 11 shown in FIGS. 3A and 3B show an auxiliary switch as an example, an enclosure 11a for accommodating electrical components, a microswitch 12 provided inside the enclosure 11a, and a mechanism part. And a lever 13 for ON / OFF control of the microswitch 12 and a spring 14 for providing a restoring force to the lever 13.

In the OFF operation of the electronic circuit breaker, as shown in FIG. 3A, the lever striking portion 15a installed on the shaft 15 is assisted while the shaft 15, which is a rotation shaft of the opening and closing mechanism, rotates in a clockwise direction. Push the lever (13) of the switch to move it. As a result, the lever 13 of the auxiliary switch is detached from the state of being connected to the button 12a of the micro switch 12. As a result, the micro switch 12 connects the cross contact and the common contact so that current can flow through the wires soldered to the cross contact and the common contact.

On the contrary, in the ON operation of the electronic circuit breaker, as shown in FIG. 3B, the shaft 15, which is a rotation shaft of the opening / closing mechanism of the electronic circuit breaker rotates counterclockwise, to the shaft 15. The installed lever striking part 15a moves to the position which cannot control the lever 13 of an auxiliary switch. Accordingly, the lever 13 is in a state of pressing the button 12a of the microswitch 12 by the spring 14. Therefore, the microswitch 12 connects the open contact and the common contact so that current flows through the open contact and the wire soldered to the common contact.

However, the conventional electronic wiring breaker having the above configuration has no limitation in operating by using the handle 4, and therefore, it is necessary to purchase and attach additional equipment when limiting the operation of the handle 4. In this case, it is expensive and cumbersome because you have to purchase and install a separate equipment.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to enable the circuit breaker to be used only when the insertion key is inserted into the circuit breaker, thereby allowing the user to more easily and conveniently limit the use of the circuit breaker. An electronic circuit breaker having a limiting function is provided.

1 is a perspective view of a main body of an electronic circuit breaker according to the prior art;

2 is an internal configuration diagram of a circuit breaker for an electronic wiring according to the prior art

3 is an operation state diagram of an electronic wiring breaker according to the prior art

4 is a perspective view of a main body of the electronic circuit breaker according to the present invention, in which the insertion key is not inserted into the insertion portion of the circuit breaker.

5 and 6 are internal operation configuration diagram of FIG.

7 is a perspective view of another main body of the electronic circuit breaker according to the present invention, in which an insertion key is inserted into an insertion portion of the circuit breaker.

8 and 9 are diagrams illustrating an internal operation of FIG. 7.

<Explanation of symbols for the main parts of the drawings>

1: enclosure 2: main cover

3: auxiliary cover 4: handle

16: insertion portion 20: insertion key

20a: protrusion 21: permanent magnet

31 vertical movement member 31a first body portion

31b: second body portion 31c: protrusion

32: magnetic material 34: spring

35: fitted nail 40: crossbar

Electronic circuit breaker having a use restriction function according to the present invention for achieving the above object,

An enclosure accommodating parts of the electronic wiring breaker;

Insertion portion formed on one side of the enclosure;

An insertion key configured to be inserted into the insertion part and having a permanent magnet on one side and a protrusion formed on the other side;

A vertical movement member having one side fixed to the enclosure and a magnetic body installed on the other side, and having a spring in the middle so that the magnetic body vertically moves by the permanent magnet of the insertion key; And

It characterized in that it comprises a crossbar for controlling the operation of the handle by rotating at a predetermined angle by the vertical elastic motion of the vertical movement member.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. For reference, the same reference numerals will be used to refer to components having the same functions and configurations in the present invention and the conventional drawings.

4 is a perspective view of a main body of the electronic circuit breaker according to the present invention, in which the insertion key 20 is not inserted into the insertion portion 16 of the circuit breaker. 5 and 6 are diagrams illustrating the internal operation of FIG. 4.

7 is a perspective view of another main body of the electronic circuit breaker according to the present invention, in which the insertion key 20 is inserted into the insertion portion 16 of the circuit breaker. 8 and 9 are diagrams illustrating the internal operation of FIG. 7.

As shown in FIGS. 4 to 9, the electronic wiring breaker includes an enclosure 1 accommodating parts of the electronic wiring breaker, an insertion part 16 formed on one side of the enclosure 1, It is configured to be inserted into the insertion portion 16 and the permanent magnet 21 is provided on one side and the insertion key 20 formed with a protrusion 20a on the other side, and one side is fixedly installed on the enclosure (1) and the magnetic body on the other side (32) is installed and the vertical movement member 31 with a spring in the middle so that the magnetic body 32 is vertical elastic movement by the permanent magnet 21 of the insertion key 20, and the vertical movement member ( It comprises a crossbar 40 for controlling the operation of the handle 4 by rotating at a predetermined angle by the vertical elastic movement of 31.

The vertical movement member 31 has a first body portion 31a, one side of which is fixed to the enclosure 1 by a nail 35; The first body portion 31a and one side is coupled to move in the vertical direction, but is installed so as not to be completely separated from the first body portion 31a and provided with a protruding portion 31c protruding in the horizontal direction on the other side 2 body portion 31b; A spring 34 disposed between the first body portion 31a and the second body portion 31b; And a magnetic body 32 attached to one side of the protrusion part 31c.

When the insertion key 20 is inserted, the vertical movement member 31 is lifted upward by the magnetic force between the permanent magnet 21 of the insertion key 20 and the magnetic body 32 of the vertical movement member 31. The crossbar 40 does not interfere with the rotation so that it is possible to reset by the handle operation, the vertical movement member 31 is the force of the spring 34 when the insertion key 20 is separated By lowering by rotating the crossbar 40 at a predetermined angle is configured to be impossible to reset by the handle operation.

As in the above configuration, the vertical movement member 31 is assembled inside the enclosure (1) of the electronic wiring breaker is capable of vertical movement.

When the insertion key 20 to which the permanent magnet 21 is attached is not inserted into the enclosure 1 of the circuit breaker for electronic wiring, as shown in FIGS. 4 to 6, the vertical movement member 31 is It is lowered by the force of the spring 34 to rotate the crossbar 40 at a predetermined angle so that the crossbar 40 does not come to the reset position so as to prevent operation by the handle 4.

When the insertion key 20 is inserted into the enclosure 1 of the electronic wiring breaker, as shown in FIGS. 7 to 9, the permanent magnet 21 of the insertion key 20 and the vertical movement member ( The vertical movement member 31 is lifted upward by the magnetic force between the magnetic bodies 32 of 31 to prevent the crossbar 40 from rotating so that reset by the operation of the handle 4 is possible. Thereby, the said electronic wiring breaker can be reset and ON / OFF operation | movement by operation of the handle 4.

Therefore, the electronic wiring breaker having the use restriction function of the present invention can enable the wiring breaker to be used only when the insertion key is inserted into the wiring breaker.

Preferred embodiments of the present invention as described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications are the following utility model registration claims Should be seen as belonging to.

As described above, according to the electronic circuit breaker having a use-limiting function according to the present invention, since the circuit breaker can be used only when the insertion key is inserted into the circuit breaker, the user can easily and easily restrict the use of the circuit breaker. This can reduce the hassle and cost of purchasing and installing additional equipment.

Claims (3)

In the circuit breaker for electronic wiring, An enclosure (1) for accommodating parts of the electronic wiring breaker; Insertion portion 16 formed on one side of the enclosure (1); An insertion key 20 configured to be inserted into the insertion part 16 and having a permanent magnet 21 formed at one upper side thereof, and having a protrusion 20a formed at the other side thereof; One side is fixedly installed on the enclosure (1), the magnetic body 32 is installed on the other side and the spring is provided in the middle so that the magnetic body 32 to the vertical elastic movement by the permanent magnet 21 of the insertion key (20) Vertical movement member 31; And Electronic circuit breaker having a use restriction function, characterized in that it comprises a crossbar (40) for controlling the operation of the handle (4) by rotating at a predetermined angle by the vertical elastic movement of the vertical movement member (31). The method of claim 1, wherein the vertical member 31, A first body part 31a having one side fixed to the enclosure 1 by a fitting nail 35; The first body portion 31a and one side is coupled to move in the vertical direction, but is installed so as not to be completely separated from the first body portion 31a and provided with a protruding portion 31c protruding in the horizontal direction on the other side 2 body portion 31b; A spring 34 disposed between the first body portion 31a and the second body portion 31b; and Electronic circuit breaker having a use restriction function, characterized in that it comprises a magnetic body (32) attached to one side of the protrusion (31c). The method according to claim 1 or 2, When the insertion key 20 is inserted, the vertical movement member 31 is lifted upward by the magnetic force between the permanent magnet 21 of the insertion key 20 and the magnetic body 32 of the vertical movement member 31. It is configured to be reset by the handle operation so as not to interfere with the rotation of the crossbar 40, When the insertion key 20 is disengaged, the vertical movement member 31 descends downward by the force of the spring 34 to rotate the crossbar 40 at a predetermined angle, thereby preventing reset by the handle operation. Electronic circuit breaker having a limit of use, characterized in that configured to.