KR102261866B1 - circle clip type earth leakage circuit breaker capable of reverse connection - Google Patents

Abstract

The present invention relates to a circle clip-type earth leakage circuit breaker capable of reverse connection, which can be simply configured. The circle clip-type earth leakage circuit breaker comprises: a housing unit in which a power input unit and a load output unit are placed respectively on a front side and a rear side by being spaced apart from each other; an operation switching unit placed between the power input unit and the load output unit for selectively connecting power, in which, on a front end unit, a pressurizing connection plate unit is placed to provide an upward snapping restoration force to be connected to the power input unit by a contact point but to be selectively spaced apart; a crossbar in which, on one side, a passing unit is formed to be opened to be crossed by a front end side of the pressurizing connection plate unit, and on a lower end unit, an elastic means is placed to snap and support upward; a trip unit placed on a rear surface side of the crossbar to rotate forward/backward around a lower end unit in which, on a front surface unit, an inclined end bump is formed to protrude forward; a latch unit with a front end unit placed on an upper surface of the crossbar, and a rear end unit supported by the upper surface of the inclined end bump to pressurize the crossbar downward; a handle unit engaged with the housing unit to be rotated forward/backward in which a pressurizing member, which is elevated/lowered to pressurize the latch unit downward in accordance with the rotating direction, is connected to a lower end unit; a circle clip in which, an upper side apart from a lower side of the pressurizing connection plate unit is formed to be round to be convex upward, and a lower side is fixed on the housing unit so that the circle clip is selectively pressurized downward and moved on a lower surface of the pressurizing connection plate unit; and an earth leakage circuit breaker unit connected to the circle clip by an electric wire, which has a plunger connected to the trip unit to make the trip unit retreat to allow the latch unit pressurizing the crossbar to be spaced apart from the inclined end bump.

Description

Circle clip type earth leakage circuit breaker capable of reverse connection

The present invention relates to a circle-clip type upside-down earth leakage breaker, and more particularly, to a circle-clip type upside-down earth leakage breaker that can be connected upside down while simplifying the configuration.

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 a 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 part adjacent to it 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 a wiring structure of a plurality of conventional circuit breakers.

As shown in FIG. 1, in the prior art, when a plurality of circuit breakers are arranged along the longitudinal and transverse directions, the power supply side and the load side of each circuit breaker are arranged opposite to each other along the longitudinal direction for the convenience of wiring when the power supply line and the load line are distributed. .

That is, the switch provided in each circuit breaker becomes 'ON' in a state arranged upwards on one side, while on the other side spaced apart in the longitudinal direction, it becomes 'ON' in a state arranged downward, causing a user's misunderstanding when power is supplied and disconnected. This could increase the likelihood of a fire.

On the other hand, according to the 'Electrical Equipment Technical Standard' (Ministry of Trade, Industry and Energy Notice No. 2020-198, 2020. 12. 3), which will be amended from January 1, 2022, "Article 55 (Access to wiring and other wiring and facilities) or crossing) ① Wiring must be installed so that there is no risk of electric shock or fire due to cross contact when approaching or crossing other wiring or weak current wires.

Accordingly, even when a plurality of circuit breakers are disposed along the longitudinal and transverse directions, the 'ON' direction of the switches provided in each circuit breaker must be uniformly unified. In order to solve this problem, it is necessary to manufacture a pair of another circuit breaker in which the power supply side and the load side are opposite to each other, but there is a problem in that the production cost is increased and economic efficiency is lowered.

In addition, when the conventional earth leakage breaker is connected upside down, the current is continuously flowing through the trip coil because it is in the on state due to the ground fault current, and the short-time rated trip coil is disconnected or deteriorated, so that the function of the earth leakage breaker is lost or deteriorated gas There was a problem in that the earth leakage breaker cannot be connected upside down because it causes a short circuit between phases and destroys the internal elements of the earth leakage breaker.

In other words, when the power line and the load line are connected backwards due to a user's miswiring, even if the circuit breaker is 'OFF', power is supplied to the solenoid included in the earth leakage detection circuit and is damaged, so there is a problem that the leakage function is lost.

Korea Registered Utility Model No. 20-0341427

In order to solve the above problems, an object of the present invention is to provide an earth leakage breaker that can be connected upside down in a circle clip type that can be connected upside down while simplifying the configuration.

In order to solve the above problems, the present invention provides a housing unit provided with a power input unit and a load output unit spaced apart front and rear; Doedoe arranged for selective power connection between the power input unit and the load output unit, a movable switching unit provided with a pressure connecting plate unit that is contact-connected to the power input unit at the front end and provides a resilient restoring force upward to be selectively spaced apart ; a cross bar having a light oil portion opened on one side to cross the front end of the pressure connecting plate portion and 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; a circle clip having an upper portion spaced apart from a lower portion of the pressure connecting plate portion oppositely to a lower portion of the pressure connecting plate portion to be rounded in a convex shape and having a lower portion fixed to the housing portion; and an earth leakage detection blocking part including a solenoid connected to the circle clip with an electric wire and having a plunger hooked to the trip part so that the latch part pressing the crossbar interlocks and retreats the trip part to be spaced apart from the inclined step. However, the earth leakage detection blocking unit is connected to the electric wire to the circle clip, the power is connected to the load output unit upside down, and the pressure connection plate further comprises an earth leakage sensing unit that is electrically shorted to the movable switching unit when spaced apart from the circle clip, , The earth leakage detection unit is provided to detect and amplify the leakage current, and the electric wire is connected to the solenoid to transmit a trip blocking signal so that the plunger is driven when leakage is detected, and the earth leakage detection unit is connected to a test pin connected to one side and the other side a test plate spaced oppositely upward so as to be in selective energized contact with the test pin, and a test button part provided on an upper side of the test plate, wherein the circle clip is provided with a energizing material and when the pressure connecting plate part is pressed downward A round elastic contact portion formed to be rounded in a convex shape with an upper portion spaced apart from a lower portion of the pressure connection plate portion to be elastically deformed in a state of energized contact with the pressure connection plate portion, and the lower end of the round elastic contact portion integrally extending downward Doedo, it includes a energization mediator connected to the electric wire to the earth leakage detection breaker, and a through-hole is formed through the housing portion in the vertical direction so that the energization mediator is inserted therethrough on one side opposite to the lower side of the pressure connection plate part, The circle clip is extended primarily from the lower end of the round elastic contact part to both sides and is secondarily extended to be round to the front side in an upward convex shape, and the upper end of the round elastic contact part is disposed at a lower position than the upper end of the round elastic support part. Including, in the housing part, a support guide groove is formed downwardly so that the front end of the round elastic support part is molded and inserted at a position spaced apart from the front side of the through hole, and the circle clip is integrally bent from the bottom of the round elastic support part. Further comprising a pair of resilient support protrusions extending backwards, the housing portion At the rear of the upper edge of the through hole, a seating step is formed so that the lower surface of the elastic support protrusion is surface-contacted and seated, and a through hole in the center side of the energization mediator is penetrated along the front and rear direction of the housing portion, and the through hole The coupling stopper portion extends toward the inside of the through hole in a form inclined toward the rear side of the housing portion from both edges of the through hole, and the inner wall surface of the rear side of the through hole has an inclined guide surface inclined forward toward the lower side so that the coupling stopper portion is guided. It provides a circle-clip type reverse-connectable earth leakage breaker, characterized in that it is formed.

Through the above solution means, the circle clip type upside-down earth leakage breaker according to the present invention provides the following effects.

First, even if the power line and load line are connected upside down, power is selectively supplied to the earth leakage detection breaker by interlocking with the rising/falling state of the movable switching unit, so it is possible to align the 'ON' direction of the handle part in the same direction with one circuit breaker. As a result, productivity and convenience of use can be improved compared to the prior art in which circuit breakers having opposite power and load sides are required.

Second, the power leakage detection breaker connected to the circle clip is connected to the load output unit in reverse, and when the pressurized connection plate is separated from the circle clip, the power supply is cut off as the power supply is cut off as it is electrically shorted from the circle clip, thus preventing the loss of leakage function due to burnout. It prevents the user from getting an electric shock because the contact resistance between the terminals on the power supply side becomes infinite.

Third, when the round elastic contact part, which is spaced apart from the lower part of the pressure connection plate and formed to be rounded in an upwardly convex shape, is pressed to the front and lower side on the lower surface of the pressure connection plate part, it is elastically deformed in a energized contact state and provides its own elastic restoring force. Due to the structure, disconnection of power due to separation between the pressure connecting plate part and the circle clip is prevented in advance, so that durability can be remarkably improved.

Fourth, the front ends of a pair of round elastic support parts extending primarily from the lower end of the round elastic contact part to both sides and extending to the front side in a convex shape to the upper side are molded and inserted into the support guide groove of the housing part, so that the round elastic contact part is front lower side It provides a stable support force when pressurized, so operation precision can be improved.

Fifth, the elastic support protrusion bent backwards from the lower end of the round elastic support part makes surface contact with the seating step and is seated, and at the same time, the coupling stopper part under the circle clip is caught and coupled to the lower edge side of the through hole so that the vertical departure is stably blocked. The separation distance between the pressure connecting plate part and the elastic contact part for cutting off the power supply to the earth leakage detection breaker is stably secured, so that the operation precision can be improved.

Sixth, when the coupling stopper part is inserted from the upper side to the lower side of the through hole, it is guided to the inclined guide surface that is inclined forward toward the lower side of the inner wall surface of the rear side of the through hole, and is elastically contracted and then passed through elastically expanded and caught on the lower edge side of the through hole. Assemblyability is remarkably improved, and ease of use can be improved by easy replacement when aging.

1 is an exemplary view showing a wiring structure of a plurality of circuit breakers in the prior art.
Figure 2 is a perspective view showing an earth leakage breaker that can be connected upside down circle clip type according to an embodiment of the present invention.
3 and 4 are perspective views illustrating a state in which the cover part and the housing part of the circle clip type upside-down earth leakage breaker connectable according to an embodiment of the present invention are separated and the inside thereof is exposed.
5 and 6 are exemplary views showing the use of a circle clip type upside-down earth leakage breaker according to an embodiment of the present invention.
7 and 8 are exemplary views showing the assembly process of a circle clip in a circuit breaker that can be connected upside down in a circle clip type according to an embodiment of the present invention.
9 is a perspective view showing a circle clip in a circuit breaker that can be connected upside down in a circle clip type according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, a circle-clip type upside-down earth leakage breaker according to a preferred embodiment of the present invention will be described in detail.

2 is a perspective view showing a circle clip type upside down earth leakage breaker connectable according to an embodiment of the present invention, and FIGS. 3 and 4 are a cover part and a housing part of a circle clip type upside down earth leakage breaker according to an embodiment of the present invention. It is a perspective view showing a state in which the inside is separated and exposed, and FIGS. 5 and 6 are exemplary views showing the use of a circle clip type upside-down earth leakage breaker according to an embodiment of the present invention, and FIGS. 7 and 8 are the present invention It is an exemplary view showing the assembly process of a circle clip in a circle clip type upside down earth leakage breaker according to an embodiment of the present invention, and FIG. 9 is a perspective view showing a circle clip in a circle clip type upside down earth leakage breaker according to an embodiment of the present invention. . At this time, it is preferable to understand the circle clip type earth leakage breaker and circuit breaker that can be connected upside down to be described below as the same meaning.

As shown in Figures 2 to 9, the circle clip type upside-down earth leakage breaker 300 according to an embodiment of the present invention is a housing part 210, a movable switching part 20, a crossbar 30, a trip part ( 40), a latch unit 50, a handle unit 60, a circle clip 270, and an earth leakage detection blocking unit 80.

In detail, the housing part 210 includes an internal space in which the components of the circuit breaker 300 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 210 so that each component is installed and assembled. Here, a power input unit 11 connected to the power source is provided on the front side of the housing unit 210, and a load output unit 12 connected to the load side is provided at the rear side, and the power input unit 11 has a fixed contact unit ( 13) is provided.

In addition, the movable switching unit 20 is disposed for selective power connection between the power input unit 11 and the load output unit 12 . Here, it is preferable that the movable switching unit 20 includes a pressure connecting plate unit 21 and an extension plate unit 22 .

In detail, it is preferable that the pressure connecting plate part 21 includes a magnetization facing part having a front end adjacent to the fixed contact part 13 but extending 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, the front end of the magnetization face portion is provided with a movable contact portion 25 that is connected to the fixed contact portion 13 in contact. That is, it is preferable to understand that the pressure connection 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 13 but is selectively spaced apart.

And, the rear end of the extension plate 22 is connected to the rear end of the pressure connecting plate 21 in contact with the front end of the extension plate 21 and is bent in an upward direction intersecting the pressure connecting plate 21. is preferably formed. Here, the rear end of the magnetization facing portion and the rear end of the extended facing portion 24 overlap and are fixed to the housing portion 210 through an adjusting screw 26 . The extension plate part 22 is formed of a conductive metal material like the magnetization facing part and is electrically connected to the load output part 12 through the electric wire 15 . Therefore, when the front end of the pressure connection plate part 21 is pressed downward, the fixed contact part 13 and the movable contact part 25 come into contact with each other, and the power input part 11, the pressure connection plate part 21, A current flows through the extension plate part 22 , the electric wire 15 , and the load output part 12 .

Here, the magnetization facing portion and the extended facing portion 24 are preferably formed of a metal material that is magnetized through an electric current while having conductivity. In addition, the extended face portion 24 may be formed of a bimetal having different coefficients of thermal expansion on the front and rear surfaces 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.

On the other hand, the crossbar 30 is provided to press the front end of the pressure connecting plate portion 21 downward. Here, the cross bar 30 is provided on the front end side of the pressure connecting plate part 21, and a light oil part 31 opened so that the front end of the pressure connecting plate part 21 crosses is formed. At this time, it is preferable to understand that the front end of the pressing connecting plate part 21 is pressed as substantially pressing the front end of the magnetization facing part. The crossbar 30 is pressed downward by the pressing force applied from the upper side, and is elastically supported upward through the elastic means 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. Accordingly, the state in which the crossbar 30 is pressed downward is maintained and the elastic means is compressed. And, the front end of the pressure 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 13 . 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. At the same time, since the pressing force pressing the pressing connection plate part 21 is lost, the movable contact part 25 is spaced apart from the fixed contact part 13 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 24, and is provided to rotate back and forth around the rotating end formed at the lower end. At this time, an inclined step 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 of the solenoid 82 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 front end of the latch unit 50 is disposed to face the upper surface of the crossbar 30 , and the rear end extends to a length facing the front 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. In addition, the handle part 60 is coupled to the housing part 210 to be rotated back and forth, and a pressing member that moves up and down to press the latch part 50 downward according to the rotation direction is connected to the lower end. At this time, the rotation direction refers to a connection direction in which the movable contact part 25 and the fixed contact part 13 are in contact with each other and the movable contact part 25 and the fixed contact part 13 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. Then, while the rear end of the latch unit 50 is supported by the inclined step, the front end is rotated downward to contact the latch press unit 32 and press the crossbar 30, and the fixed contact unit 13 and The movable contact portion 25 is contact-connected.

On the other hand, the handle part 60 is hingedly connected to the support frame provided in the housing part 210, and when the binding force for pressing and supporting the latch part 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 connected again, the pressing member is moved downward, and the rear end of the latch part 50 is moved to the inclined step side and is supported in contact with its upper surface again. 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 pressing connection plate part 21 is pressed downward, and the movable contact part 25 and the The fixed contact portion 13 is operated to contact again.

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

On the other hand, the circle clip 270 is formed in a rounded shape with an upper portion spaced apart from the lower portion of the pressure connecting plate portion 21 in a convex upward direction so as to be selectively moved downwardly on the lower surface of the pressure connecting plate portion 21, and the lower portion is rounded. Preferably, it is fixed to the housing part 210 . Here, the circle clip 270 is preferably made of a conductive material such as a conductive metal.

In addition, the circle clip 270 is an upper portion spaced apart from the lower portion of the pressure connecting plate 21 so as to be elastically deformed in a state of energized contact with the pressure connecting plate 21 when the pressure connecting plate 21 is pressed downward. It is preferable to include a round elastic contact portion 271 formed to be rounded in a convex shape to the upper side.

Here, the round elastic contact portion 271 is preferably provided in an inverted 'U' cross-sectional shape, and front and rear ends may be disposed along the front and rear directions of the housing portion 210 . In addition, it is preferable that a through hole 216 is formed through the housing portion 210 in the vertical direction on one side opposite to the lower portion of the pressure connecting plate portion 21 . In this case, it is preferable that the rear end of the round elastic contact part 271 is disposed opposite to the upper side of the through hole 216 .

And, the circle clip 270 primarily extends from the lower end of the round elastic contact part 271 to both sides in the width direction, and a pair of round elastic support parts 272 that extend secondarily to the front side in an upwardly convex shape are further added. It is preferable to include

Here, it is preferable that the rounded upper portions of each of the round elastic support portions 272 are spaced apart from the upper portions of the elastic contact portions 271 on both sides in the width direction of the round elastic contact portions 271 . That is, the overall cross-sectional shape of the round elastic contact part 271 and the pair of the round elastic support parts 272 is formed in an 'E' cross-sectional shape, and each end is formed to be rounded toward the front of the housing part 210. It is desirable to understand

In addition, it is preferable that the upper end of each of the round elastic support portions 272 convex upwardly is disposed at a lower position than the upper end of the round elastic contact portion 271 . Through this, as the round elastic contact part 271 is pressed downward by the pressure connecting plate part 21, it is elastically deformed downward and a free space for movement can be secured.

That is, between the upper end of each of the round elastic support parts 272 in a convex shape and the upper end of the round elastic contact parts 271, it is preferable that a free space for movement during elastic deformation of the round elastic contact parts 271 is formed. Do.

In addition, it is preferable that the support guide groove 217 is recessed downward so that the front end of the round elastic support 272 is inserted into the housing part 210 in a position spaced apart from the front side of the through hole 216 .

Here, in a state where the rear end of the round elastic contact part 271 is disposed opposite to the upper side of the through hole 216 , the front end of the round elastic support part 272 is inserted into the support guide groove 217 to be fixed. can

On the other hand, it is preferable that the circle clip 270 further includes a pair of elastic support protrusions 273 extending backwardly and bent integrally from the lower end of each of the round elastic support parts 271 .

Here, it is preferable that the housing portion 210 has a stepped seating step 218 so that the lower surface of the elastic support protrusion 273 is placed in surface contact with the rear side of the upper edge of the through hole 216 .

At this time, the rear end of the round elastic contact part 271 may be disposed on the upper side adjacent to the inner wall surface of the front side of the through hole 216 , and the length in the front and rear direction of the elastic support protrusion 273 is the through hole 216 . It may be set to correspond to the front-back direction length of . In addition, the lower surface of the front end side of the elastic support protrusion 273 may be seated in surface contact with the upper surface of the seating step 218 .

And, when the pressing connecting plate part 21 is pressed downward, the pressing connecting plate part 21 presses down the round elastic contact part 271 so that the round elastic contact part 271 is elastically deformed downward and moved, and the The elastic restoring force acts upward by the elastic restoring force of the round elastic contact part 271 itself, and the round elastic contact part 271 is in close contact with the lower surface of the pressure connecting plate part 21 and may be electrically connected.

At this time, the front end of the round elastic support part 272 is inserted into the support guide groove 217 and at the same time, the lower surface of the elastic support protrusion 273 is surface-contacted and seated on the seating step 218 and the circle clip 270 may be supported and fixed.

In addition, when the downward pressure of the pressing connection plate part 21 is released, the round elastic contact part 271 is elastically restored to the upper side by the elastic restoring force of the round elastic contact part 271 itself, and the round elastic contact part 271. may be electrically blocked by being spaced apart from the pressure connecting plate portion 21 .

In addition, it is preferable that the circle clip 270 includes a energization intermediary portion 274 integrally extending downward from the lower end of the round elastic contact portion 271 and connected to the electric wire to the earth leakage detection blocking portion 80 .

At this time, it is preferable that the through hole 216 is penetrated in the vertical direction on one side of the housing portion 210 opposite to the lower portion of the pressure connecting plate portion 21 so that the energization intermediary portion 274 is inserted therethrough. . In addition, it is preferable that the energization intermediary portion 274 is set such that a width extending along the width direction of the housing portion 210 corresponds to a width of the through hole 216 . Here, it is preferable that the upper end of the energization intermediary portion 274 is integrally connected to the lower end of the round elastic contact portion 271 , and the lower portion of the energization intermediary portion 274 is on both sides in the width direction of the housing portion 210 . can be expanded.

In addition, the energization intermediary portion 274 has a through-hole on the central side that penetrates along the front-rear direction of the housing portion 210 , and coupling stopper portions 275 from both edges of the through-hole in the width direction of the through hole It may extend in a 'V' shape inclined toward the rear of the housing part 210 toward the inside.

Here, the coupling stopper part 275 may be provided such that the end of the lead wire 86 for connecting the electric wire between the circle clip 270 and the earth leakage detection blocking part 80 is coupled. At this time, a gap between the front surface of the 'V' shape of the coupling stopper part 275 and the rear surface of the energization intermediate part 274 may be formed at an interval corresponding to the diameter of the lead wire 86, and the lead As the wire 86 is fitted inside the coupling stopper part 275 , the circle clip 270 and the earth leakage detection blocking part 80 may be electrically connected to each other.

In addition, it is preferable that an inclined guide surface 216a inclined forward toward the lower side is formed on the inner wall surface of the rear side of the through hole 216 to guide the coupling stopper part 275 . At this time, it is preferable that the seating step 218 is formed on the upper end of the inclined guide surface 216a.

In addition, the distance between the lower end of the inclined guide surface 216a and the front inner wall surface of the through hole 216 at the same height as the lower end of the inclined guide surface 216a is, the coupling stopper part 275 is elastically deformed. And it is preferably set to correspond to the front-rear direction length of the coupling stopper portion 275 so as to be able to pass to the lower side.

Here, preferably, the distance between the lower end of the inclined guide surface 216a and the front inner wall surface of the through hole 216 of the same height may be set to be slightly smaller than the front-rear length of the coupling stopper part 275. have. At this time, after passing between the lower end of the inclined guide surface 216a and the front inner wall surface of the through hole 216 in a state in which the coupling stopper part 275 is temporarily elastically deformed forward by an external force during assembly, it is fired. can be restored.

On the other hand, when explaining the assembly process of the circle clip 270, first, it is preferable that the energization mediator 274 is inserted through the through hole 216 from the upper side to the lower side. At this time, the energization intermediary portion 274 may be inserted through the lower side in a state in close contact with the inner wall surface of the front side of the through hole 216 .

At the same time, the coupling stopper part 275 is guided and pressed by the inclined guide surface 216a formed on the inner wall surface of the rear side of the through hole 216, and is temporarily elastically deformed into the through hole and accommodated. It is preferable that the energization mediator 274 moves downward.

And, the moment the coupling stopper part 275 is exposed to the lower side of the through hole 216, the coupling stopper part 275 is elastically restored by the elastic force to the rear, and the lower edge side of the through hole 216 ( 216b), as it engages, the upward departure is blocked.

At this time, the distance between the upper end of the coupling stopper portion 275 and the lower end of the elastic support protrusion 273 may be set to correspond to the distance between the lower end of the through hole 216 and the seating step 218 . . Accordingly, when the upper end of the coupling stopper part 275 is in face-to-face contact with the lower edge side 216b of the through hole 216 , the lower surface of the elastic support protrusion 273 is in face-to-face contact with the seating step 218 . can be

On the other hand, the earth leakage detection blocking part 80 is electrically connected to the circle clip 270 through the lead wire 86, and the latch part 50 pressing the cross bar 30 is the inclined step. It is preferable to include a solenoid 82 having a plunger hooked to the trip part 40 so as to interlock and retract the trip part 40 in order to be spaced apart from the solenoid 82 .

At this time, the earth leakage detection blocking unit 80 is provided to perform a function of detecting an earth leakage when power is supplied when electricity is energized by the contact between the pressure connecting plate part 21 and the circle clip 270 . On the other hand, as the power is cut off when the pressure connection plate part 21 and the circle clip 270 are separated from each other, the earth leakage detection blocking unit 80 has a test button 83, which will be described later even in the reversely connected state of the power supply. Even if the power is pressed, the earth leakage detection and interruption unit 80, which is cut off, does not operate, and the contact resistance between both terminals of the power input unit 11 becomes infinite. In this case, the reverse connection means a state in which a power line is connected to the load output unit 12 and a load line is connected to the power input unit 11 .

That is, unlike the conventional circuit breaker in which power is supplied to the electronic circuit for earth leakage detection even when the breaker is turned off when the power is connected upside down, the circuit breaker of the present invention is turned off when the power line and the load line are connected upside down due to a user's incorrect wiring. In the case of a safety structure in which power supplied to the earth leakage detection and interruption unit 80 is cut off, in an on state, power is supplied to the earth leakage detection and interruption unit 80 .

In detail, the earth leakage detection blocking unit 80 is connected to the electric wire to the circle clip 270 , the power is connected to the load output unit 12 in reverse, and the pressure connecting plate unit 21 is spaced apart from the circle clip 270 . When electrically shorted to the movable switching unit 20, it is preferable to further include an earth leakage detecting unit 81 provided to detect and amplify the leakage current only when power is supplied.

In addition, the power leakage detection unit 81 is connected to the load output unit 12 in reverse, and when the pressure connection plate unit 21 is in contact with the circle clip 270 and is electrically connected, the movable switching unit ( 20) and may be electrically connected to drive as power is supplied.

Here, the electric leakage detecting unit 81 is preferably connected to the electric wire to the solenoid 82 to transmit a trip blocking signal so that the plunger is driven when an electric leakage is detected. The earth leakage detection unit 81 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 80 includes a test pin 83 connected to one side of the earth leakage sensing unit 81 . Here, the test pin 83 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 81 .

In addition, the earth leakage detection blocking part 80 is connected to the other side of the earth leakage detection part 81 and is spaced apart from the test pin 83 in an upward direction so as to be in selective energized contact with the test pin 83 . (84) is preferably included. Here, the test plate 84 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 81 . In addition, the test plate 84 may be provided in a flat plate shape to elastically deform when pressed.

In addition, it is preferable that the electric leakage detecting unit 81 includes a test button unit 85 provided on the upper side of the test plate 84 . Here, the test button part 85 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 1 covering the upper part of the housing part 210 . 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 85 is pressed downward may be interposed in the test button part 85 . In addition, the lower end of the test button part 85 may be disposed opposite to the front end of the upper surface of the test plate 84 .

Here, when the user presses the test button part 85 downward, the upper surface of the test plate 84 comes into contact with the lower end of the test button part 85 and is interlocked and pressed downward. Accordingly, the test plate 84 may be elastically deformed such that a lower surface of the test plate 84 may be in electrical contact with the test pin 83 . At this time, the test plate 84 and the test pin 83 by downward pressing of the test button part 85 in a state in which the pressure connection plate part 21 and the circle clip 270 are in contact with each other and are electrically connected. As power is supplied to the earth leakage detecting and blocking unit 80, which is a closed circuit during electrical connection between the two, the plunger of the solenoid 82 may be retracted.

Here, the plunger of the solenoid 82 interlocks and retreats the trip part 40 so that the latch part 50 pressing the crossbar 30 is spaced apart from the inclined step. It is preferable that the engaging groove is connected to the engaging groove.

At this time, the plunger of the solenoid 82 is disposed to protrude from the solenoid 82 when the power is cut off. In addition, the plunger of the solenoid 82 is contracted and inserted into the solenoid 82 when power is supplied. Here, an extended step extending radially outward along the circumferential direction may be formed at the end of the plunger. 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 of the solenoid 82 is contracted and inserted into the solenoid 82 when power is supplied. At the same time, the trip part 40 engaged with the plunger is momentarily retracted. Accordingly, the rear end of the latch part 50 is spaced apart from the inclined step, 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 portion 25 and the fixed contact portion 13 can be separated from each other while the magnetized face portion is elastically restored and unfolded.

Here, when the power line and the load line are connected upside down to the circuit breaker 300 and the circuit breaker 300 is in the 'ON' state, the user presses the test button part 85 downwards to the test plate 84 and When the test pins 83 are energized with each other, power is supplied to the earth leakage detection and blocking unit 80 to perform functions of earth leakage detection and blocking.

In addition, when the power line and the load line are connected upside down to the circuit breaker 300 and the circuit breaker 300 is in the 'OFF' state, even if the circuit breaker is 'OFF', power is supplied to the solenoid included in the earth leakage detection circuit and is damaged Unlike the prior art in which the earth leakage function operation is lost as a result, the user presses down the test button unit 85 and the test plate 84 and the test pin 83 come into contact with each other, even if the earth leakage detecting and blocking unit 80 is in contact with each other. The function of earth leakage detection and earth leakage blocking is not performed because power is not supplied to the device.

As such, the circle clip type upside-down earth leakage breaker 300 according to the present invention is interlocked with the rising and falling state of the movable switching unit 20 even when the power line and the load line are connected upside down to selectively power the earth leakage detection breaker 80 As this is supplied, it is possible to align the 'ON' direction of the handle unit 60 in the same direction with one circuit breaker, so that the power supply side and the load side are opposite to each other, and it is required to manufacture a pair of other circuit breaker. and usability can be significantly improved.

In addition, when the power supply is reversely connected to the load output unit 12 in the electric leakage detecting and blocking unit 80 connected to the circle clip 170 , the pressure connecting plate 21 is spaced apart from the circle clip 170 . As the power supply is cut off due to an electrical short circuit with the movable switching unit 20, it is possible to prevent the loss of the leakage function due to burnout in advance, and the contact resistance between the terminals on the power supply side becomes infinite, thereby preventing the user from getting an electric shock.

And, when the round elastic contact portion 271, which is spaced apart from the lower portion of the pressure connection plate part 21 and formed to be rounded in an upwardly convex shape, is pressed forwardly downwardly on the lower surface of the pressure connection plate portion 21, it is in energized contact. In a state where it is elastically deformed and provides its own resilient restoring force, the non-connection of the power supply of the earth leakage detection blocking unit 80 due to separation between the pressure connecting plate part 21 and the circle clip 270 is prevented in advance, so that it is durable. This can be significantly improved.

In addition, the front end of a pair of the round elastic support part 272 extending primarily from the lower end of the round elastic contact part 271 to both sides in the width direction and extending secondarily to the front side in a convex shape upward is the support guide groove ( 217) to provide a stable support force when the round elastic contact part 271 is pressed forward and downward by the pressing connection plate part 21, and to cut off the power supply to the earth leakage detection and interruption part 80. The separation distance between the pressure connecting plate part 21 and the elastic contact part 171 is stably secured, so that operation precision can be improved.

Furthermore, a pair of elastic support protrusions 273 integrally bent backwards from the lower end of the round elastic support 272 are in surface contact with the seating step 218 that is stepped on the rear side of the upper edge of the through hole 216 . At the same time as being seated, the coupling stopper part 275 of the lower portion of the circle clip 270 is engaged with the lower edge side 216b of the through hole 216, thereby stably blocking the vertical separation. Accordingly, the separation distance between the pressure connecting plate part 21 and the elastic contact part 171 for cutting off the power supply to the earth leakage detection blocking part 80 can be stably secured, so that operation precision can be improved.

In addition, when the coupling stopper part 275 is inserted from the upper side to the lower side of the through hole 216 , it is guided to the inclined guide surface 216a that is inclined forward toward the lower side of the inner wall surface of the rear side of the through hole 216 . It is elastically contracted and elastically expanded after passing through, so that it is caught and coupled to the lower edge side 216b of the through hole 216, so that assembling can be significantly improved, and it can be easily replaced when old, so that the usability can be improved.

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. Terms commonly used, such as those 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 variations 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.

300: Circle clip type upside down earth leakage breaker
210: housing unit 20: movable switching unit
30: crossbar 40: trip part
50: latch unit 60: handle unit
270: circle clip 271: round elastic contact
272: round elastic support 273: elastic support protrusion
274: energization mediation portion 275: coupling stopper portion
80: earth leakage detection block 81: earth leakage detection unit
82: solenoid 83: test pin
84: test plate 85: test button

Claims (5)

a housing unit provided with a power input unit and a load output unit spaced apart at front and rear sides;
Doedoe arranged for selective power connection between the power input unit and the load output unit, a movable switching unit provided with a pressure connecting plate unit that is contact-connected to the power input unit at the front end and provides a resilient restoring force upward to be selectively spaced apart ;
a cross bar having a light oil portion opened to cross the front end of the pressure connecting plate portion on one side and being elastically supported upward through an elastic means provided at the 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;
a circle clip having an upper portion spaced apart from a lower portion of the pressure connecting plate portion oppositely to a lower portion of the pressure connecting plate portion to be rounded in a convex shape and having a lower portion fixed to the housing portion; and
A power leakage detection blocking part including a solenoid connected to the circle clip with an electric wire and having a plunger hooked to the trip part so that the latch part pressing the crossbar interlocks and retreats the trip part to be spaced apart from the inclined step ,
The earth leakage detection blocking unit further comprises a leakage sensing unit connected to the electric wire to the circle clip, power is connected to the load output unit in reverse, and electrically shorted to the movable switching unit when the pressure connecting plate is spaced apart from the circle clip, The earth leakage detection unit is provided to detect and amplify the leakage current, and the electric wire is connected to the solenoid to transmit a trip blocking signal so that the plunger is driven when the earth leakage is detected,
The earth leakage detecting unit includes a test pin connected to one side, a test plate connected to the other side and spaced apart from each other so as to be in selective energized contact with the test pin, and a test button unit provided on the upper side of the test plate,
The circle clip is provided with a conductive material so that when the pressure connection plate portion is pressed downwardly, the upper portion spaced apart from the lower portion of the pressure connection plate portion is rounded in a convex shape to be elastically deformed while in energized contact with the pressure connection plate portion. and a round elastic contact part, which integrally extends downward from the lower end of the round elastic contact part, and includes a energization intermediary part connected to the electric wire to the earth leakage detection breaker,
A through hole is formed through the housing portion in the vertical direction so that the energization mediator is inserted through one side opposite to the lower portion of the pressure connecting plate portion,
The circle clip extends primarily from the lower end of the round elastic contact part to both sides and is extended to be round to the front side in an upwardly convex shape. A pair of round elastic support parts with an upper end disposed at a lower position than the upper end of the round elastic contact part. including more,
A support guide groove is formed downwardly in the housing part so that the front end of the round elastic support part is inserted in a position spaced apart from the front side of the through hole,
The circle clip further includes a pair of elastic support protrusions extending backward to be integrally bent from the lower end of the round elastic support part,
A seating step is formed in the housing part so that the lower surface of the elastic support protrusion is in surface contact with the rear of the upper edge of the through hole and is seated,
A through hole is penetrated in the central side of the energization intermediary along the front and rear directions of the housing portion, and the coupling stopper portion extends from both edges of the through hole in a form inclined toward the rear of the housing portion toward the inside of the through hole,
A circle clip type upside-down earth leakage circuit breaker, characterized in that the inner wall surface of the rear side of the through hole is formed with an inclined guide surface inclined forward toward the lower side so that the coupling stopper is guided. delete delete delete delete

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