KR102287486B1 - power-side and load-side integrated earth leakage circuit breaker using circuit board - Google Patents

Abstract

The present invention relates to an earth leakage breaker integrated with power- and load sides using a circuit board, which can greatly improve the convenience of work, comprising: a housing unit; an operation switching unit provided with a connecting plate unit; a crossbar; a trip unit; a latch unit for pressing the crossbar downward; a handle unit connected to a lower end of a pressing member; an earth leakage detecting and blocking unit; a circuit board; and an extension input terminal electrically connected to a second conduction hole.

Description

Power-side and load-side integrated earth leakage circuit breaker using circuit board

The present invention relates to a power supply-side load-side integrated earth leakage breaker using a circuit board, and more particularly, a power-side load-side circuit board using a circuit board with improved safety and space utilization by quickly blocking the flow of current when an overcurrent occurs while simplifying the configuration. It is related to an integrated circuit breaker.

In general, when an overcurrent exceeding the set value flows or a short circuit occurs in the circuit, the circuit breaker quickly switches the opening/closing operation of the electric line to block the current flow, thereby preventing damage to the electrical appliances and lines connected to the load. it is a device Such a circuit breaker is driven by manual or automatic operation, and preferably can be operated so that the current is automatically short-circuited when an overcurrent occurs.

Here, conventionally, a bimetal type circuit breaker has been disclosed that uses two metal plates having different coefficients of thermal expansion by pasting them and bending toward a smaller coefficient of thermal expansion when heat due to overcurrent is applied. In such a bimetal type circuit breaker, resistance is generated when current is supplied to a circuit, and the bimetal is heated, and when an excessive current exceeding a predetermined standard flows, the bimetal is bent and a tripping unit adjacent to the circuit is driven. And, the contact terminal coupled to the lower portion of the bimetal is spaced apart from the input terminal, and is driven in a structure in which the flow of current is blocked.

However, the conventional bimetal type circuit breaker has a problem in that the current cannot be immediately blocked and delayed due to the generation of time for the bimetal to deform. Moreover, as the rate at which the current is cut off is relatively delayed, there is a problem that not only components inside the circuit breaker but also electrical appliances and lines connected to the load side may be damaged.

Accordingly, in some cases, a zero-phase current transformer type circuit breaker has been disclosed that controls the trip bar to be driven through a signal transmitted when an overcurrent occurs. Such an image current transformer type circuit breaker may include components such as an image current transformer, a solenoid unit, and a printed circuit board.

Meanwhile, FIG. 1 is an exemplary view showing the wiring structure of a conventional circuit breaker.

As shown in FIG. 1, in the prior art, when the circuit breaker 11 is placed in a narrow space such as inside the street light flasher 2, one of the power supply side 11a and the load side 11b of the circuit breaker 11 moves upward. placed, but the other is placed downward.

And, the ends of the electric wires 3 and 4 are respectively electrically connected to the power supply side 11a and the load side 11b of the circuit breaker 11, and are disposed on the upper side of the power supply side 11a and the load side 11b of the circuit breaker 11 The electric wire 3 connected to any one of the circuit breaker 11 is arranged in a shape surrounding the outer housing portion 11c of the circuit breaker 11 and is connected to the outside from the inside of the casing of the street light flasher 2 .

However, in the conventional circuit breaker 11, the power supply side 11a and the load side 11b are respectively arranged on the upper side and the lower side. There was a problem in that space utilization was decreased due to the increase.

In addition, when connecting wires to the power supply side 11a and the load side 11b of the circuit breaker 11 disposed in a narrow space such as the inside of the street light flasher 2, workability is reduced, and the required wire length is increased, resulting in economic feasibility. There was a problem with lowering.

Korea Registered Utility Model No. 20-0341427

In order to solve the above problems, the present invention is to provide a power supply-side load-side integrated earth leakage breaker using a circuit board with improved safety and space utilization by quickly blocking the flow of current when an overcurrent occurs while simplifying the configuration. make it a task

In order to solve the above problems, the present invention provides a housing unit provided with a power input terminal on the front side and a load output terminal on the rear side is spaced apart from the power input unit; A movable switching unit disposed for selective power connection between the power input terminal and the load output terminal, the power input terminal being contact-connected to the front end, and provided with a connecting plate part that provides elastic restoring force to the upper side so as to be selectively spaced apart ; a cross bar having a light oil portion having an opening to cross the front end of the connecting plate on one side and being elastically supported upward through an elastic means provided at the lower end; a trip part disposed opposite to the rear side of the crossbar and rotated back and forth around the lower end, and having an inclined step protruding forward in the front part; a latch part having a front end disposed to face the upper surface of the crossbar, the rear end being supported in contact with the upper surface of the inclined step, and pressing the crossbar downward; a handle part coupled to the housing part so as to be rotated back and forth, and connected to a lower end of a pressing member that moves up and down to press the latch part downward according to a rotation direction; an earth leakage detection and interruption unit electrically connected to the movable switching unit and including a solenoid having a plunger engaged with the trip unit; Doedoe extending in the front-rear direction on the inner lower side of the housing portion, a first energizing hole is formed through the front portion opposite to the lower portion of the power input terminal in the vertical direction, the power input terminal is electrically connected, a circuit board through which two conductive holes are formed; and an extension input terminal electrically connected to the second conduction hole and disposed on the rear side of the housing part and spaced apart from the load output terminal by a step in vertical and front-rear directions, wherein the load output terminal is provided on the rear side of the housing part. The load-side insertion groove is recessed so that the terminal is inserted, and the extension-side insertion groove is disposed at the rear end of the housing part later than the load-side insertion groove so that the extended input terminal is inserted at a position stepped up and down from the load-side insertion groove. This depression is formed, and the power input terminal and the extended input terminal are provided with a power-side energizing part and an extended-side energizing part extending downward to be bent integrally from each front end, respectively, the lower ends of the power-side energizing part and the extended side energizing part are The first conduction hole and the second conduction hole are respectively inserted through, fitted, and electrically connected, and the thickness of the power-side conduction part and the first conduction hole, and the thickness of the extension-side conduction part and the second conduction hole are respectively The housing part is set to correspond to each other, and the housing part has a lower opening, and further comprises a back cover part made of an insulating material for covering the lower part of the housing part opened downward, and is inserted through the first conduction hole and the second conduction hole, respectively. Each lower end of the power-side conducting unit and the extended side conducting unit is supported in contact with the upper surface of the back cover unit, and an insertion space is formed in the lower inner side of the housing unit along the front-rear direction so that the circuit board is inserted therethrough, the insertion space is in communication with the power supply side insertion groove and the extended side insertion groove recessed in the front side of the housing part, respectively, and further comprising a cover part covering an upper part of the housing part, wherein the power supply side insertion groove is inserted into the cover part so that the power input terminal is pressed down A power-side pressing protrusion integrally extending downward from the ceiling of the cover unit opposite to the upper side of the groove is formed, and the vertical extension length of the power-side pressing protrusion is set to correspond to the distance between the ceiling of the cover unit and the power input terminal, A load integrally extending downwardly from the ceiling of the cover part opposite to the upper side of the load-side insertion groove so that the load output terminal is pressed downwardly on the cover part. A side pressing protrusion is formed, the vertical extension length of the load side pressing protrusion is set to correspond to a distance between the ceiling of the cover part and the load output terminal, and the extended side is inserted into the cover part so that the extended input terminal is pressed down. An extension-side pressing protrusion integrally extending downward from the ceiling of the cover unit opposite to the upper side of the groove is formed, and the vertical extension length of the extension-side pressing protrusion is set to correspond to a distance between the ceiling of the cover unit and the extension input terminal. It provides a power-side load-side integrated earth leakage breaker using a circuit board, characterized in that.

Through the above solution means, the present invention provides the following effects.

First, the power input terminal and extension input terminal respectively provided on the front and rear sides of the housing are connected with wires through the circuit board, so that the insertion areas of the external wires on the power side and the load side are concentrated side by side and the insertion direction is unified, so the work convenience will be significantly improved. can

Second, the load output terminal and the extension input terminal on the rear side of the housing part are spaced stepwise apart in a stepwise manner along the up-down and front-back directions side by side with an extra step, so that a safety accident caused by a short circuit between each external wire that has been stripped is structurally prevented. The safety of use can be significantly improved.

Third, the power-side energizing part and the extended-side energizing part extending downward from the respective front ends of the power input terminal and the extended input terminal integrally with each other are inserted through the first energizing hole and the second energizing hole respectively formed in the front and rear of the circuit board. And because it is electrically connected by a simple assembly method that is fitted, the work convenience can be remarkably improved.

Fourth, each lower end of the power supply-side conduction unit and the extension-side conduction unit inserted through the first conduction hole and the second conduction hole are supported in contact with and supported by the back cover part covering the lower part of the housing part, and at the same time, a plurality of the plurality of conduction parts extending downward from the ceiling of the cover part. The pressing protrusion presses down the power input terminal and the extended input terminal, so that the electrical connection state can be stably maintained.

Fifth, the load output terminal and the extended input terminal are inserted into the load side as the extension side insertion groove is formed at the rear end of the housing part at a position stepped up and down from the load side insertion groove and disposed behind the load side insertion groove formed on the rear side of the housing part. Since it is easily assembled with a safe external wire insertion structure only by being inserted into the groove and the extension-side insertion groove, work convenience can be remarkably improved.

1 is an exemplary view showing a wiring structure of a conventional circuit breaker.
Figure 2 is a perspective view showing a power-side load-side integrated earth leakage breaker using a circuit board according to an embodiment of the present invention.
3 is a side view illustrating a state in which a cover part and a housing part are separated and the inside is exposed in the power-side load-side integrated earth leakage breaker using a circuit board according to an embodiment of the present invention;
4 is a perspective view illustrating a state in which a cover portion and a housing portion of the power-side load-side integrated earth leakage breaker using a circuit board according to an embodiment of the present invention are separated and exposed.
5 is an exemplary view showing the inside of a power-side load-side integrated earth leakage breaker using a circuit board according to an embodiment of the present invention.
6 is a perspective view illustrating a housing part in the power-side load-side integrated earth leakage breaker using a circuit board according to an embodiment of the present invention.
7 is an exemplary view showing the inside of a power-side load-side integrated earth leakage breaker using a circuit board according to an embodiment of the present invention.

Hereinafter, a power-side load-side integrated earth leakage breaker using a circuit board according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view showing a power-side load-side integrated earth leakage breaker using a circuit board according to an embodiment of the present invention, and FIG. 3 is a cover part and a housing in the power-side load-side integrated earth leakage breaker using a circuit board according to an embodiment of the present invention. It is a side view showing a state in which the part is separated and the inside is exposed, and FIG. 4 is a perspective view showing the state in which the cover part and the housing part of the power-side load-side integrated earth leakage breaker using a circuit board according to an embodiment of the present invention are separated and the inside is exposed. , FIG. 5 is an exemplary view showing the inside of a power supply-side load-side integrated earth leakage breaker using a circuit board according to an embodiment of the present invention, and FIG. 6 is a power-side load-side integrated earth leakage breaker using a circuit board according to an embodiment of the present invention. It is a perspective view showing the housing, and FIG. 7 is an exemplary view showing the inside of the power-side load-side integrated earth leakage breaker using a circuit board according to an embodiment of the present invention. In this case, it is preferable that the power-side load-side integrated earth leakage breaker and the circuit breaker using the circuit board to be described below have the same meaning.

2 to 7, the power-side load-side integrated earth leakage breaker 200 using a circuit board according to an embodiment of the present invention includes a housing unit 110, a movable switching unit 20, a crossbar 30, and a trip. It includes a unit 40 , a latch unit 50 , a handle unit 60 , an earth leakage detection blocking unit 70 , a circuit board 180 , and an extended input terminal 190 . In addition, it is preferable that the power-side load-side integrated earth leakage breaker 200 using the circuit board further includes a cover part 119 covering the upper part of the housing part 110 .

In detail, the housing 110 includes an internal space in which the components of the circuit breaker 200 are accommodated, and is preferably formed of an insulating and non-combustible synthetic resin material. A partition wall, an installation groove, or a hole is formed in the housing part 110 so that each component is installed and assembled. Here, a power input terminal 111 connected to the power source is provided on the front side of the housing unit 110, and a load output terminal 112 connected to the load side is provided on the rear side, and the rear side of the power input terminal 111 is provided with A fixed contact portion 113 is provided.

In addition, the movable switching unit 20 is disposed for selective power connection between the power input terminal 111 and the load output terminal 112 . Here, it is preferable that the movable switching unit 20 includes a connecting plate part 21 and an extension plate part 22 .

In detail, it is preferable that the front end of the connecting plate part 21 includes a magnetization facing part that is adjacent to the fixed contact part 113 but extends rearward. In this case, the magnetization facing part may be provided with a plurality of thin metal plates, such as copper, in a state in which one side is bonded to each other in an overlapping state. Here, a movable contact part 25 connected to the fixed contact part 113 is provided at the front end of the magnetization facing part. That is, it is preferable to understand that the connecting plate part 21 includes the magnetization facing part and the movable contact part 25 provided on the front end side thereof. At this time, it is preferable that the magnetization face part is made of a conductive metal material that provides elastic restoring force so that the movable contact part 25 is in energizable contact with the fixed contact part 113 but is selectively spaced apart.

In addition, it is preferable that the rear end of the extension plate 22 is connected to the rear end of the connecting plate 21 , and an extended face portion is formed on the front end bent in the upward direction intersecting the connecting plate 21 . Here, the rear end of the magnetization facing portion and the rear end of the extended facing portion overlap and are fixed to the housing 110 through an adjusting screw. The extension plate part 22 is formed of a conductive metal material like the magnetization face part and is electrically connected to the load output terminal 112 through a energized wire 114 . Accordingly, when the front end of the connecting plate portion 21 is pressed downward, the fixed contact portion 113 and the movable contact portion 25 come into contact with each other, and the power input terminal 111, the connecting plate portion 21, and the A current flows through the extension plate part 22 , the energized wire 114 , and the load output terminal 112 .

Here, the magnetization facing portion and the extended facing portion are preferably formed of a metal material that is magnetized through an electric current while having conductivity. In addition, the extended face portion may be formed of a bimetal having different coefficients of thermal expansion on the front surface and the rear surface while being magnetized. That is, when the temperature of the extension plate part 22 rises due to current resistance heat through overcurrent, it may be formed to be bent toward the rear side having a low coefficient of thermal expansion.

Meanwhile, the crossbar 30 is provided to press the front end of the connecting plate part 21 downward. Here, the crossbar 30 is provided on the front end side of the connecting plate part 21, and the passing-through part 31 opened so that the front end of the connecting plate part 21 crosses is formed. At this time, when the front end of the connecting plate part 21 is pressed, it is preferable to understand that the front end of the magnetization facing part is substantially pressed. The cross bar 30 is pressed downward by the pressing force applied from the upper side, and is elastically supported upward through the elastic means 33 provided at the lower end.

In detail, in a normal state, the force by which the crossbar 30 is pressed downward is greater than the elastic force of the elastic means 33 . Accordingly, the state in which the crossbar 30 is pressed downward is maintained and the elastic means 33 is compressed. Then, the front end of the connecting plate portion 21 disposed across the light oil portion 31 is bent and pressed downward. Through this, the movable contact part 25 is contact-connected to the fixed contact part 113 . At this time, when an overcurrent occurs or the force to press the crossbar 30 is lost through manipulation of the handle unit 60 , the crossbar 30 is moved upward through the elastic restoring force of the elastic means 33 . At the same time, since the pressing force pressing the connecting plate part 21 is lost, the movable contact part 25 is spaced apart from the fixed contact part 113 while the magnetized facing part is stretched through the elastic restoring force.

On the other hand, the trip part 40 is disposed opposite to the rear side of the extended face part, and is provided to rotate back and forth about the pivoting end part 40a formed at the lower end. At this time, the inclined step 41 protrudes forward on the front portion of the trip unit 40 . In addition, a locking groove may be recessed in one side of the trip part 40 so that the plunger 72a of the solenoid 72 is hooked and connected. The structure of the trip unit 40 is a configuration generally disclosed in the prior art, and a detailed description thereof will be omitted.

In addition, the latch part 50 has a front end disposed to face the upper surface of the crossbar 30 , and a rear end thereof extends to a length facing the front part of the trip unit 40 . In this case, the rear end of the latch part 50 is formed to be in contact with or adjacent to the inclined step 41 . In addition, the handle unit 60 is coupled to the housing unit 110 so as to be rotated back and forth, and a pressing member that moves up and down to press the latch unit 50 downward according to the rotation direction is connected to the lower end. At this time, the rotational direction refers to a connection direction in which the movable contact part 25 and the fixed contact part 113 are in contact with each other and the movable contact part 25 and the fixed contact part 113 are operated to be spaced apart. It is preferable to understand that it encompasses the blocking direction. Hereinafter, the connection direction will be described and illustrated as a direction rotating to the front side, and the blocking direction will be described and illustrated as a direction rotating to the rear side.

In detail, in a state in which the handle portion 60 is rotated in the connection direction, the pressing member is moved downward. At this time, the pressing member is hingedly connected to the lifting connection part formed on the central side of the latch part 50 . Accordingly, when the pressing member is moved downward, the latch part 50 is interlocked and the rear end of the latch part 50 is supported in surface contact with the inclined upper surface of the inclined step 41 . Then, while the rear end of the latch unit 50 is supported by the inclined step 41, the front end is rotated downward, and the latch press unit 32 contacts and presses the cross bar 30, and the fixed contact unit ( 113) and the movable contact part 25 are contact-connected.

On the other hand, the handle unit 60 is hingedly connected to the support frame provided in the housing unit 110, and when the binding force for pressing and supporting the latch unit 50 is lost, through the elastic restoring force of the return means provided on one side. rotated in the blocking direction. In this case, the return means may be provided with a torsion spring or a leaf spring. In addition, the pressing member hinged to the lower end of the handle unit 60 may move upward, and the latch unit 50 may be completely separated from the crossbar 30 and the trip unit 40 .

At this time, when the handle part 60 is rotated in the connection direction so that the current is reconnected, the pressing member is moved downward, and the rear end of the latch part 50 moves toward the inclined step 41 and comes into contact with the upper surface again. is supported And, when the pressing force of the pressing member is continuously transmitted while the rear end of the latch unit 50 is supported, the front end of the latch unit 50 moves downward. At this time, as the front end of the latch part 50 contacts the latch pressing part 32 and the downward pressing force is transmitted, the connecting plate part 21 is pressed downward, and the movable contact part 25 and the fixed The contact part 113 is manipulated to contact again.

In addition, a return means for returning the rotation angle of the trip unit 40 is further provided on the side of the rotation end portion 40a. Accordingly, after the rear end of the latch unit 50 is rotated in the rearward direction to be spaced apart from the inclined step 41, the position is immediately returned through the return means.

On the other hand, the earth leakage detection blocking unit 70 is electrically connected to the movable switching unit 20 through the energized wire 114, and the latch unit 50 for pressing the cross bar 30 is the inclined step. It is preferable to include a solenoid 72 provided with a plunger 72a hooked to the trip part 40 so as to interlock and retract the trip part 40 to be spaced apart from the trip part 40 .

At this time, the earth leakage detection blocking unit 70 may be provided to perform a function of detecting an earth leakage when the test button unit 75 is pressed when power is supplied when electrically connected to the movable switching unit 20 . On the other hand, the earth leakage detection and interruption unit 70 is separated from the movable switching unit 20 and as the power is cut off, even when the test button unit 75 is pressed, the power leakage detection and interruption unit 70 operates. In addition, the contact resistance between both terminals of the power input terminal 111 may become infinite.

In detail, it is preferable that the earth leakage detection blocking unit 70 further includes an earth leakage sensing unit 71 electrically connected to the energized wire 114 and provided to detect and amplify the leakage current. At this time, it is preferable to understand that the term "electrically connected" is a concept encompassing direct wire connection and electromagnetic induction method.

In addition, the earth leakage detection unit 71 is electrically connected to the energized electric wire 114, and the test button unit 75 is pressed and electrically energized to be driven as power is supplied.

Here, the electric leakage detecting unit 71 is preferably connected to the electric wire to the solenoid 72 to transmit a trip blocking signal so that the plunger 72a is driven when the electric leakage is detected. The earth leakage detecting unit 71 may be configured as an electronic circuit including an image current transformer and a PCB circuit device, but is not limited thereto.

In addition, it is preferable that the earth leakage detection blocking unit 70 includes a test pin 73 connected to one side of the earth leakage sensing unit 71 . Here, the test pin 73 is preferably made of a conductive metal material, and may be electrically connected to the upper central side of the PCB circuit device of the leak point detection unit 71 .

In addition, the earth leakage detection blocking part 70 is connected to the other side of the earth leakage detection part 71 and is spaced apart from the test pin 73 in an upward direction so as to be in selective energized contact with the test pin 73 . (74) is preferably included. Here, the test plate 74 is preferably made of a conductive metal material, and may be electrically connected to the top of the PCB circuit device of the leak point detection unit 71 . In addition, the test plate 74 may be provided in a flat plate shape to elastically deform when pressed.

In addition, it is preferable that the electric leakage detecting unit 71 includes a test button unit 75 provided on the upper side of the test plate 74 . Here, the test button part 75 is preferably provided as an insulating material such as synthetic resin, and penetrates through a test hole formed through a vertical direction on one side of the cover part 119 covering the upper part of the housing part 110 . It may be inserted so that the upper end is exposed to the upper side. In addition, a spring that provides elastic restoring force upward when the test button part 75 is pressed downward may be interposed in the test button part 75 . In addition, the lower end of the test button part 75 may be disposed opposite to the front end of the upper surface of the test plate 74 .

Here, when the user presses the test button part 75 downward, the upper surface of the test plate 74 comes into contact with the lower end of the test button part 75 and is interlocked and pressed downward. Accordingly, the test plate 74 may be elastically deformed so that the lower surface of the test plate 74 may be in electrical contact with the test pin 73 . At this time, between the test plate 74 and the test pin 73 by downward pressing of the test button part 75 in a state in which the movable switching part 20 and the earth leakage detection part 71 are electrically connected to each other. When electrical connection is made, as power is supplied to the earth leakage detection and interruption unit 70 having a closed circuit, the plunger 72a of the solenoid 72 may be retracted.

Here, the plunger 72a of the solenoid 72 interlocks and retracts the trip part 40 so that the latch part 50 pressing the crossbar 30 is spaced apart from the inclined step 41 . It is preferable to engage and connect to the engaging groove of the trip unit 40 .

At this time, the plunger 72a of the solenoid 72 is disposed to protrude from the solenoid 72 when the power is cut off. In addition, the plunger 72a of the solenoid 72 is contracted and inserted into the solenoid 72 when power is supplied. Here, an extended step extending radially outward along the circumferential direction may be formed at an end of the plunger 72a. In addition, it is preferable that the extended step is disposed on the front portion of the trip unit 40 , and is engaged with the engaging groove portion of the trip unit 40 .

In addition, the plunger 72a of the solenoid 72 is contracted and inserted into the solenoid 72 when power is supplied. At the same time, the trip portion 40 engaged with the plunger 72a is momentarily retracted. Accordingly, the rear end of the latch part 50 is spaced apart from the inclined step 41 , and the binding force that presses and supports the latch part 50 is lost. Through this, the pressing force applied to the crossbar 30 is removed, and the movable contact part 25 and the fixed contact part 113 can be separated from each other while the magnetization facing part is elastically restored and unfolded.

On the other hand, the power input terminal 111 is preferably provided on the inside front side of the housing portion (110). At this time, the power input terminal 111 is preferably formed of a conductive metal material. In addition, it is preferable that the power input terminal 111 is provided with a power supply-side conduction unit 111a extending downward integrally from the front end.

In addition, a power supply side insertion groove 115a may be formed in the front side of the housing 110 with an inner contour corresponding to the outer contour of the power input terminal 111 so that the power input terminal 111 is inserted. At this time, the power input terminal 111 is inserted into the power supply side insertion groove (115a), the power supply side conducting part (111a) is not inserted into the power supply side insertion groove (115a), the front side of the power supply side insertion groove (115a) It may extend downward along the wall.

In addition, it is preferable that the load output terminal 112 is spaced apart from the power input terminal 111 and provided at the inner rear side of the housing part 110 . In this case, the load output terminal 112 is preferably formed of a conductive metal material.

In addition, a load-side insertion groove 115b may be formed on the rear side of the housing 110 with an inner contour corresponding to the outer contour of the load output terminal 112 so that the load output terminal 112 is inserted.

In addition, a load-side communication hole 119a may be formed through the rear side of the load-side insertion groove 115b in the front-rear direction so that a load-side external wire (not shown) is inserted. In addition, it is preferable that the opening hole is formed through the cover part 119 opposite to the load side communication hole 119a. In addition, a screw for fixing a load-side external wire (not shown) inserted into the load output terminal 112 is inserted through the cover portion 119 opposite to the upper side of the load-side insertion groove 115b, and the load output terminal The load-side screw insertion hole 119b may be formed to penetrate in the vertical direction so as to be fastened to the 112 .

In addition, the circuit board 180 is composed of a pair of conductive parts made of a conductive metal material, and a substrate part 182 made of an insulating material to which the conductive parts are fixed, in the front and rear directions on the inner lower side of the housing part 110 . It is preferable to extend along Here, in the energizing portion of the circuit board 180, a first energizing hole 181a is formed vertically through a front portion opposite to the lower portion of the power input terminal 111 so that the power input terminal 111 is electrically connected. It is preferable that the extended input terminal 190 is electrically connected to each other, and the second conducting hole 181b is formed through the rear portion in the vertical direction. At this time, the length in the front-rear direction of the circuit board 180 is set to exceed the interval between the power input terminal 111 and the load output terminal 112 , and the power input terminal 111 and the extended input terminal 190 . ) can be set to correspond to the interval between

Here, it is preferable that an insertion space 115d is formed in the lower inner side of the housing part 110 in the front and rear directions so that the circuit board 180 is inserted therethrough, and a width corresponding to the width of the insertion space 115d is formed. It is preferable that the circuit board 180 having the above is disposed in the insertion space 115d and extends in the front-rear direction. At this time, the circuit board 180 is the housing unit spaced downward from each lower end of the movable switching unit 20, the crossbar 30, the trip unit 40, and the earth leakage detection blocking unit 70. 110) is preferably disposed in the lower part. Accordingly, the circuit board 180 is electrically short-circuited and separated from the movable switching unit 20 , the crossbar 30 , the trip unit 40 , and the earth leakage detecting/blocking unit 70 . can

In addition, the extension input terminal 190 is electrically connected to the second conduction hole 181b formed at the rear side of the circuit board 180, and is disposed at the rear side of the housing unit 110 and the load output terminal ( 112) and it is preferable to be spaced apart stepwise in a stepwise manner along the vertical and front-rear directions. Here, it is preferable that the extended input terminal 190 is provided with an extended side energizing part 191a extending downward integrally from the front end.

In this case, it is preferable that the extended input terminal 190 and the load output terminal 112 are disposed on the inner rear side of the housing part 110, respectively, and are spaced apart from each other by a step so as to be electrically short-circuited and blocked from each other.

In addition, the rear end of the housing part 110 is disposed rearward than the load-side insertion groove 115b and extends so that the extension input terminal 190 is inserted at a position stepping up and down from the load-side insertion groove 115b. It is preferable that the side insertion groove (115c) is recessed. That is, the extension-side insertion groove 115c is recessed in the rear end of the housing part 110 disposed at the rear side of the load-side insertion groove 115b and at a vertical step difference from the load-side insertion groove 115b. This is preferable. Here, the extension-side insertion groove 115c may have an inner contour corresponding to the outer contour of the extended input terminal 190 .

At this time, the extension input terminal 190 is inserted into the extension-side insertion groove 115c, but the extension-side conducting portion 191a is not inserted into the extension-side insertion groove 115c, but the extension-side insertion groove 115c. may extend downward along the front side wall of the

Here, the extension side insertion groove (115c) and the load side insertion groove (115b) are at positions that are stepped up and down from each other, and a spare step for shorting the power supply side external wire (not shown) and the load side external wire (not shown) It is preferable to be formed side by side and to be formed adjacent to each other at a stepped position in the front-rear direction.

At this time, most preferably, the extension-side insertion groove 115c is disposed below the load-side insertion groove 115b, and at the same time, the extension-side insertion groove 115c is disposed rearward than the load-side insertion groove 115b. can

That is, the rear side of the housing part 110 in which the extension-side insertion groove 115c and the load-side insertion groove 115b are formed may be formed to be stepped in a step shape that increases toward the front, and the extension-side insertion groove 115c ) is arranged at the lower end, the load-side insertion groove (115b) may be arranged at the upper end.

At this time, a raised portion protruding upward at a position corresponding to the load-side insertion groove 115b is formed in the housing 110 so that the load-side insertion groove 115b is disposed above the extension-side insertion groove 115c. The load-side insertion groove 115b may be depressed downwardly from the upper surface of the raised portion.

In addition, the power-side communication hole 118a may be formed through the rear side of the extension-side insertion groove 115c in the front-rear direction so that the power-side external wire (not shown) is inserted. At this time, as the lower end formed to be stepped on the rear side of the cover part 119 is disposed to cover the upper side of the power-side communication hole 118a, the power-side communication hole 118a and the load-side communication hole 119a are mutually connected to the cover part. (119) may be mutually partitioned by a stepped rear portion.

In addition, a screw for fixing a power-side external wire (not shown) inserted into the extension input terminal 190 is inserted through the cover portion 119 opposite to the upper side of the extension-side insertion groove 115c, and the extension input The power supply side screw insertion hole 118b may be formed to penetrate in the vertical direction so as to be fastened to the terminal 190 .

At this time, it is preferable that the power-side communication hole 118a and the load-side communication hole 119a are formed with an extra step at a mutually up and down step position, and are formed adjacent to each other at a stepped position in the front and rear directions. . Similarly, it is preferable that the power supply side screw insertion hole 118b and the load side communication hole 119a are formed with an extra step at a mutually vertically stepped position, and are formed adjacent to each other at a mutually front and rear stepped position. do.

In addition, it is preferable that the insertion space 115d communicates with the power supply-side insertion groove 115a and the extension-side insertion groove 115c, respectively. At this time, the circuit board 180 is extended along the insertion space 115c, and the power-side conducting part 111a is inserted and fitted into the first conducting hole 181a from the upper side to the lower side and is electrically connected. , it is preferable that the extension-side conducting portion 191a is inserted and fitted into the second conducting hole 181b from the upper side to the lower side to be electrically connected.

That is, each lower end of the power-side conducting part 111a and the extended-side conducting part 191a extending downwardly integrally from each front end of the power input terminal 111 and the extended input terminal 190 is the first It is preferable that the first conduction hole 181a and the second conduction hole 181b are respectively inserted through and electrically connected by fitting.

At this time, it is preferable that the thicknesses of the power supply-side conduction part 111a and the first conduction hole 181a, and the thicknesses of the extension-side conduction part 191a and the second conduction hole 181b correspond to each other, respectively. .

On the other hand, it is preferable that the housing part 110 further includes a back cover part 117 of an insulating material that has an open lower portion and covers the lower portion of the housing part 110 that is opened downward. Here, the back cover part 117 may be detachably coupled to the lower portion of the housing part 110 to cover the insertion space 115d.

Here, the lower ends of the power supply side conduction part 111a and the extension side conduction part 191a are respectively inserted through the first conduction hole 181a and the second conduction hole 181b, and then the back cover part 117 ) is preferably supported in contact with the upper surface of the

Furthermore, the cover part 119 has the power input terminal 111 , the load output terminal 112 , and the extended input terminal 190 downwardly extending from the ceiling of the cover part 119 integrally so that the extended input terminal 190 is pressed downward. It is preferable that a plurality of pressing projections (119c, 119d, 119e) are formed.

In detail, the cover part 119 has a power supply side pressing protrusion ( 119c) is preferably formed. In this case, the vertical extension length of the power-side pressing protrusion 119c is preferably set to correspond to the distance between the ceiling of the cover part 119 and the power input terminal 111 .

In addition, the cover part 119 has a load-side pressing protrusion ( 119e) is preferably formed. In this case, the vertical extension length of the load-side pressing protrusion 119e is preferably set to correspond to the distance between the ceiling of the cover part 119 and the load output terminal 112 .

Further, in the cover part 119, the extension side pressure extending integrally downward from the ceiling of the cover part 119 opposite to the upper side of the extension-side insertion groove 115c so that the extension input terminal 190 is pressed downwardly. It is preferable that the projection 119d is formed. In this case, the vertical extension length of the extension-side pressing protrusion 119d is preferably set to correspond to the distance between the ceiling of the cover part 119 and the extension input terminal 190 .

As such, in the power-side load-side integrated earth leakage breaker 200 using the circuit board according to the present invention, the power input terminal 111 and the extended input terminal 190 respectively provided on the front and rear sides of the housing 110 are provided on the circuit board 180 . ), so that the insertion areas of the power-side and load-side external wires (not shown) are concentrated side by side adjacent to each other in the rear portion of the housing 110, and the insertion direction is unified, so work convenience can be remarkably improved.

At this time, since the insertion directions of the external wires (not shown) on the power side and the load side are unified in the same direction, the volume occupied by the external wires (not shown) is remarkably reduced even when placed in a narrow space such as inside a street light flasher, which significantly improves space utilization can be In addition, the required wire length can be reduced, thereby improving economy.

In addition, the load output terminal 112 and the extension input terminal 190 on the rear side of the housing part 110 are spaced stepwise apart in a stepwise manner along the up-down and front-back directions side by side with an extra step, each external wire (not shown) Safety accidents due to a short circuit between each external electric wire (not shown) that may occur when the coating is peeled off due to aging are structurally prevented, so the safety of use can be remarkably improved.

Here, the extension-side insertion groove is disposed on the rear side of the load-side insertion groove 115b formed on the rear side of the housing part 110 and extends at the rear end of the housing part 110 at a position stepped up and down from the load-side insertion groove 115b. (115c) is formed. Accordingly, since the load output terminal 112 and the extended input terminal 190 are easily assembled into a safe wire insertion structure only by being inserted into the load side insertion groove 115b and the extended side insertion groove 115c, the work convenience will be significantly improved. can

Then, the circuit board 180 is disposed in the insertion space 115d communicated with the power supply side insertion groove 115a and the extended side insertion groove 115c inside the lower inner side of the housing 110, the movable switching unit 20, the crossbar (30), the trip unit 40 and the earth leakage detection blocker are electrically partitioned and electrically connected between the power input terminal 111 and the extension input terminal 190, so safety accidents caused by short circuits are prevented and safety of use is improved. can be

In addition, since the back cover part 117 of an insulating material that covers the lower part of the housing part 110 that is opened downward is detachably coupled to the housing part 110, easy replacement is possible when the circuit board 180 is aging. Work convenience can be significantly improved.

In addition, the power-side conduction unit 111a and the extension-side conduction unit 191a extending downwardly integrally from each front end of the power input terminal 111 and the extension input terminal 190 are the front and rear of the circuit board 180 . Since they are electrically connected to each other through a simple assembly method that is inserted through and fitted into the first conduction hole 181a and the second conduction hole 181b formed in the , work convenience can be remarkably improved.

In addition, each lower end of the power supply side conduction part 111a and the extension side conduction part 191a inserted through the first conduction hole 181a and the second conduction hole 181b is a back cover that covers the lower part of the housing 110 . A plurality of pressing protrusions 119c and 119e extending downward from the ceiling of the cover unit 119 while being supported in contact with the part 117 press down the power input terminal 111 and the extension input terminal 190 to make electrical connection. The state can be kept stable.

In this case, terms such as "include", "comprise", "include" or "have" described above mean that the corresponding component may be inherent, unless otherwise stated. It should be construed as not excluding components, but may further include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Commonly used terms such as terms defined in the dictionary should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

As described above, the present invention is not limited to each of the above-described embodiments, and modifications can be implemented by those of ordinary skill in the art to which the present invention pertains without departing from the scope of the claims of the present invention. and such modifications are within the scope of the present invention.

200: Power-side load-side integrated earth leakage breaker using a circuit board
110: housing unit 20: movable switching unit
30: crossbar 40: trip part
50: latch unit 60: handle unit
70: short circuit detection 180: circuit board
190: extension input terminal

Claims (5)

a housing part having a power input terminal on the front side and a load output terminal on the rear side spaced apart from the power input terminal;
A movable switching unit disposed for selective power connection between the power input terminal and the load output terminal, the power input terminal being contact-connected to the front end, and provided with a connecting plate for providing elastic restoring force upward to be selectively spaced apart ;
a cross bar having a light oil portion opened to cross the front end of the connecting plate portion on one side and elastically supported upward through an elastic means provided at a lower end portion;
a trip unit disposed opposite to the rear side of the crossbar and rotated back and forth around the lower end portion, and the inclined step protrudes forward in the front portion;
a latch unit having a front end disposed to face the upper surface of the crossbar, the rear end being supported in contact with the upper surface of the inclined step, and pressing the crossbar downward;
a handle part coupled to the housing part so as to be rotated back and forth, and connected to a lower end of a pressing member that moves up and down to press the latch part downward according to a rotation direction;
an earth leakage detecting and blocking unit electrically connected to the movable switching unit and including a solenoid having a plunger engaged with the trip unit;
Doedoe extending in the front-rear direction on the inner lower side of the housing part, a first energizing hole is formed through the front part opposite to the lower part of the power input terminal in the vertical direction, the power input terminal is electrically connected, a circuit board through which two conductive holes are formed; and
an extension input terminal electrically connected to the second energization hole and disposed at the rear side of the housing part and spaced apart from the load output terminal by a step in vertical and front-rear directions;
A load-side insertion groove is recessed in the rear side of the housing part so that the load output terminal is inserted, and the extension input is disposed at the rear end of the housing part rearward than the load-side insertion groove and at a position stepping up and down from the load-side insertion groove. The extension side insertion groove is recessed so that the terminal is inserted,
The power input terminal and the extended input terminal are provided with a power supply-side energizing part and an extended-side energizing part extending downward to be bent integrally from each front end, and each lower end of the power-side energizing part and the extended-side energizing part has the first energizing hole and inserted through each of the second energizing holes, fitted and electrically connected,
The thicknesses of the power supply-side conduction unit and the first conduction hole, and the thicknesses of the extension-side conduction part and the second conduction hole are set to correspond to each other, respectively,
The housing part has an open lower part, and further comprises a back cover part made of an insulating material for covering the lower part of the housing part opened downward, the power supply-side conduction part inserted through the first conduction hole and the second conduction hole, respectively; Each lower end of the extension side conducting part is supported in contact with the upper surface of the back cover part,
An insertion space is formed in the lower inner side of the housing part along the front-rear direction so that the circuit board is inserted therethrough, and the insertion space communicates with the power supply-side insertion groove and the extension-side insertion groove recessed in the front side of the housing part, respectively,
Further comprising a cover portion for covering the upper portion of the housing portion,
A power-side pressing protrusion integrally extending downward from the ceiling of the cover unit opposite to the upper side of the power-side insertion groove is formed on the cover portion so that the power input terminal is pressed downwardly, and the vertical extension length of the power-side pressing protrusion is equal to the length of the cover It is set to correspond to the gap between the negative ceiling and the power input terminal,
A load side pressing protrusion integrally extending downward from the ceiling of the cover unit opposite to the upper side of the load side insertion groove is formed on the cover unit so that the load output terminal is pressed downwardly, the vertical extension length of the load side pressing protrusion is the length of the cover It is set to correspond to the gap between the negative ceiling and the load output terminal,
An extension-side pressing protrusion integrally extending downward from the ceiling of the cover unit opposite to an upper side of the extension-side insertion groove is formed on the cover portion so that the extension input terminal is pressed downward, the length extending in the vertical direction of the extension-side pressing protrusion is set to correspond to the distance between the ceiling of the cover part and the extended input terminal.
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