KR20190094491A - Circuit Breaker - Google Patents

Abstract

The present invention relates to a circuit breaker consisting of upper and lower housings, a handle applying or blocking power, a trip bar tripping the handle and blocking power and a trip device driving the trip bar. A circuit breaker having an improved armature support structure comprises: a stator (10) having a first bending unit designed to raise a suction force due to an electromagnetic force by corresponding to an inflow current in a location where a circuit is closed, and located in an upper part to be coupled and fixed to the lower housing by a fixing piece which passes through a first coupling hole (11); a bimetal (20) of which a part is located in the lower part of the stator (10), wherein the bimetal is formed in an L shape and curved when an overcurrent is introduced therein; an armature (30) sucked by the suction force of the stator (10) when an abnormal current occurs in the circuit and thus, the overcurrent is introduced therein; and a support (40) supporting the lower part of the armature (30) to be rotatable while being supported by the lower housing.

Description

Circuit Breaker with Dual Armature Pixcore-Enabled Trip Device {Circuit Breaker}

The present invention relates to a circuit breaker having a circuit breaker having a dual armature trip device, and more particularly, to prevent the short circuit current larger than the overcurrent and overcurrent to flow into the circuit or converter, such as circuits and electrical equipment Dual amateur fix that ensures instantaneous trip operation at over-current values less than the over-current value of one armature and fixed core. A circuit breaker with a core operated trip device is provided.

Recently, as the IEC (K61009-1, earth leakage breaker with overcurrent protection device for home and similar uses) has been changed from the standard KS of residential earth leakage breaker, the technology of short circuit breaking performance must be satisfied, and the condition of extreme short circuit The need for technology to satisfy short circuit performance is needed.

In general, a small overcurrent breaker should be able to reduce its size and provide instantaneous function even if the short circuit performance is over 500A according to ICE standard. In accordance with the specification of such a small overcurrent circuit breaker, armature devices have been developed to allow tripping by moving by magnetic force of a coil when an overcurrent occurs.

As a prior art for this purpose, Patent No. 10-0923683 discloses an armature device that is applied to a small overcurrent circuit breaker. The overcurrent circuit breaker disclosed in this patent document consists of a bimetal, a fixed core, an armature, and a fixed core. The upper yoke is configured to include a hinged portion to which the armature is rotatably coupled.

The overcurrent circuit breaker provided with the armature as described above causes the armature to move toward the fixed core by the suction force when the short circuit current larger than the overcurrent flows in the energizing circuit, thereby making the trip bar of the breaker to the trip position to block the short circuit current. However, since the overcurrent circuit breaker disclosed in the patent document is additionally provided with a stator for fixing the armature, there is a limitation of the installation space, and thus there is a problem that it is difficult to manufacture the circuit breaker relatively small.

KR 10-0923683 B1 KR 10-1098226 B1

The present invention has been made to solve the problems of the conventional circuit breaker as described above, but is provided with a thermal mechanism using a bimetal and an armature using a magneto resistor, the structure is simple to reduce the trouble or malfunction Dual armature pixcore operation for easy assembly and fabrication, accurate current interruption operation, and also allows designers to overcome the space constraints and adjust (set downward) instantaneous trip current values by amateur pixcores It is an object to provide a circuit breaker having a type trip device.

According to the present invention, due to the interaction between the primary amateur / pixcore and the synchronous amateur / pixcore, the dual trip can be instantaneously tripped at an excessive current value less than that of the existing one armature and the fixed core. To provide a circuit breaker with armature pixcore-activated trip.

1: Lower housing

3: handle

5: trip bar

10: bimetal

20: pixcore

23: fastening hole

30: Amateur Stator

35: protrusion bar

40: amateur

50: Synchronized Fix Score

60: sympathetic amateur

P1: first fixing piece

S1: first rotating shaft

22a: opening

According to the present invention, to solve the problems of the conventional circuit breaker as described above, it is provided with a thermal mechanism using a bimetal and an armature using a magneto resistor, but the structure is simple to reduce the trouble or malfunction And dual armatures, which are easy to assemble and manufacture, can perform the current blocking operation accurately, and the designer can overcome the space constraints and adjust (downward setting) the instantaneous trip current value by the armature fixtures. A circuit breaker with pixcore-enabled trip is provided.

The present invention is a dual armature actuating type capable of instantaneous trip operation at an excessive current value less than the excessive current value of one conventional armature and a fixed core due to the interaction of the main armature / pixar and the synchronous armature / pixar. A circuit breaker with a trip device is provided.

1 is a full perspective view of the circuit breaker according to the present invention (upper housing removed).
2 is a front view of a circuit breaker according to the present invention (main armature and pixcor, tuned armature and pixcore).
Figure 3 (a) is a state before the main amateur and pixcore, synchronized amateur and pixcore instantaneous trip of the present invention
Figure 3 (b) shows the main amateur and pixcore, synchronized amateur and pixcore instantaneous trip state of the present invention
Figure 4 is a plan view of the lower housing of the present invention (tuning fixture score groove).
Figure 5 (a, b) is a trip bar, tuning armature coupling diagram according to the first and second embodiments of the present invention.
Fig. 6A is a perspective view of a tuning armature and a tuning fixture in accordance with a first embodiment of the present invention.
6B is a perspective view of a tuning fixture according to the second and third embodiments.
7 is a perspective view of the main armature stator (the striking rod) and the main fixture.
Figure 8 (a, b) is a perspective view of the circuit breaker left and right direction of the present invention (before the tuning armature and the tuning fixture)

Hereinafter, a circuit breaker having a dual armature pixcore activated trip device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 1 is a perspective view of a circuit breaker according to the present invention (upper housing removed), FIG. 2 is a front view of a circuit breaker according to the present invention (main armature and pixcor, tunable armature and pixcore), and FIG. 3 (a) shows the present invention Figure 3 (b) is the main amateur and pixcore of the present invention, before the instantaneous trip of the synchronized amateur and pixcore, Figure 3 (b) is the state after the instantaneous trip of the main amateur and pixcor of the present invention, Figure 4 is a lower housing of the present invention Fig. 5 (a, b) is a plan perspective view (a, b) is a trip bar according to the first and second embodiments of the present invention, the tuning armature coupling, Fig. 6a is a first embodiment of the present invention Fig. 6B is a perspective view of the tuning pegs in accordance with the second and third embodiments, Fig. 7 is a perspective view of the main armature stator (hit bar) and the main fixture, and Figs. 8 (a) and (b) are shown in Figs. Circuit breaker left and right direction strabismus of the present invention A (tuning and tuning armature core fitted around the fix).

As shown in Fig. 1, Fig. 2 and Fig. 8, the circuit breaker having the dual armature pick-score tripping device of the present invention includes: a lower housing 1 and a handle 3 for applying or disconnecting power; A circuit breaker comprising a trip bar (5) for tripping the handle (3) to cut off power, and a trip device for driving the trip bar (5).

As shown in Figs. 1 and 2, the tripping device of the circuit breaker having the dual armature pec-core activated trip device of the present invention includes a bimetal 10, a pin score 20, an armature stator 30 and an armature. 40, and the tuning pixcore 50 and the tuning armature 60 are comprised. The bimetal 10 is partially located at the bottom of the fixer 20 and extends upward to one side of the trip bar, and is curved when an overcurrent flows, thereby touching and touching the upper touch part of the trip bar. The pixcore 20 is fixed to the lower housing by a first fixing piece P1 passing through the fastening hole 23 with a bending part designed to increase suction force by electromagnetic force in response to an incoming current.

In addition, as shown in Figures 1, 2, 3, the armature stator 30 is fixed to the support frame that the upper end forms the rotation axis of the handle (3) rotated about the first rotation axis (S1), The striking protrusion bar 35 which touches the trip bar 5 is formed by the suction force of the armature 40 sucked by the pickscore 20, and the lower part of the body is disposed downward by gravity. The armature 40 is fixed to the lower portion of the armature stator 30 toward the pickscore 20 so that an abnormal current occurs in the converter and is sucked by the suction force of the pickscore 20 when an overcurrent (short circuit current) is introduced.

As shown in Fig. 3 (a, b), the tuning peculiarity 50 and the tuning armature 60 assist the suction force of the armature 40 sucked by the pickscore 20 so that the striking protruding rod 35 is formed. The suction force by the electromagnetic force is assisted (tuned) so that the trip bar 5 can be touched above the critical point.

Action: The magnitude of the short circuit current is A> B, and when the A short circuit current is generated, the restoring force of the trip bar is drawn by the suction force between the fix score 20 and the armature 40 without the tuning fix score 50 and the tuning armature 60. When it can be seen that the trip can be overcome, when the short-circuit current of less than A occurs the suction force of the trip bar only by the suction force between the pickscore 20 and the armature 40 can not beat the instantaneous trip operation smoothly. At this time, the electromagnetic attraction between the tuning pixcore 50 and the tuning armature 60 assists the suction force between the main pixcore 20 and the armature 40 and the tuning or the suction force, so that a short-circuit current of B size smaller than A is obtained. When it occurs, it overcomes the restoring force of the trip bar and instantaneous trip operation is performed smoothly and completely.

1, 2, 3, 4, and 8, the armature stator 30 and the armature 40 are located on one side of the trip bar 5, and the opening of the tuning fix score 50 is shown. 22a is aimed at the armature 40, and the tuning fix score 50 is fixed to the lower housing 1 in the state of being positioned on the other side of the trip bar 5 (opposite the bimetal and armature stator). The tuning armature 60 is made of metal and fastened to the other side of the trip bar 5 to be spaced apart from each other so as to secure a rotational gap on the top of the tuning fix score 50. In addition, the other side of the mover, the fixer 20 and the tuning fixer 50 are fixed together to the first fixing piece P1 in the fixing hole 1a of the lower housing.

Action : In this case, the current leakage (circuit) circuit breaker for small houses can overcome the limitations of space and make the most of the narrow space to reduce or adjust the current value of instantaneous trip as designed by the designer.

3 (a, b), 5, 6, the tuning fixtures (50, 6a) is a c-shape with an open top, a fastening hole 53 is formed and the lower housing (1) It consists of the lower wall board 51 fixed to the wall, and the wall wall 52 extended vertically upward from the side of the lower wall board 51. As shown in FIG. The tuning arm 60 has an angle from the lower side to the other side of the connecting pieces 62 and 62-3 and the connecting pieces 62 and 62-3 which are extended downwardly to the other side of the trip bar 5 to be engaged or integrally formed. And metal suction plates 61 and 161 which are formed and bent to form a rotational gap with the top surface 52a of the both wall plates 52.

As shown in FIGS. 5A and 6A, the tuning armature 60 has a connecting piece 62 extending downward and coupled to the other side of the trip bar 5, and forming an angle at a lower portion of the connecting piece 62. The metal suction plate 61 which is bent to the side to form a rotational gap with the upper end surface 52a of the both wall plates 52 is integrally formed.

Alternatively, as shown in FIG. 5B, the connecting piece 62-3 formed of plastic resin so as to extend downward on the other side of the trip bar 5 and the horizontal portion 62-3a of the connecting piece 62-3. It consists of a metal suction plate 161 to form a rotational gap with the top surface (52a) of the two wall plate (52).

As shown in FIG. 6B, the fix score 20 is positioned at one side and a synchronous fix score 50 is positioned at the other side through the connecting plate 120. Pixcore 20 is a c-shaped shape with one side open, the body plate 21 is bent to one side from the side of the body plate 21 is composed of both wall plates (52). The tuning fixtures 50 have a U-shape with an open upper portion, the lower wall plate 51 having a fastening hole 53 formed therein and fixed to the lower housing 1, and extending upwardly vertically from the sides of the lower wall plate 51. It consists of the double wall plate 52 which was made. The connecting plate 120 and the lower wall plate 51 are integrally formed while forming one plane.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, the scope of the present invention is not limited to these embodiments, and the scope of the present invention is defined by the following claims, and equivalent scope of the present invention. It will include various modifications and variations belonging to.

The reference numerals set forth in the claims below are merely to aid the understanding of the present invention, not to affect the interpretation of the scope of the claims, and the scope of the claims should not be construed narrowly.

1: Lower housing
3: handle
5: trip bar
Bimetallic (10)
Pixcore (20)
Amateur stator (30)
Amateur (40)
Synchronized Fix Score (50)
Tuning Amateurs (60)

Claims (6)

A circuit comprising a lower housing 1, a handle 3 for applying or cutting power, a trip bar 5 for tripping the handle 3 to cut off the power, and a trip device for driving the trip bar 5. In circuit breaker,

The trip device,
A bimetal (10) positioned at a lower portion of the fixture (20) and extending upward to one side of the trip bar to be bent when an overcurrent is introduced to trip by touching the upper touch part of the trip bar;
A pickscore 20 having a bending part designed to increase suction force by electromagnetic force in response to an incoming current, and fixed to the lower housing by a first fixing piece P1 passing through the fastening hole 23;
The trip bar 5 is fixed to the support frame that forms the rotation axis of the handle 3 around the first rotation axis S1 by the suction force of the armature 40 sucked by the fixture 20. An armature stator (30) having a projecting hitting protrusion bar (35) formed thereon, the lower part of which is disposed so that the body is stretched downward by gravity;

The armature 40 is fixed to the lower portion of the armature stator 30 toward the pickscore 20 so that an abnormal current is generated in the converter and is attracted by the suction force of the pickscore 20 when an overcurrent (short circuit current) is introduced. ;

A tuning pixcore for assisting (tuning) the suction force by the electromagnetic force so that the striking bar 35 can touch the trip bar 5 above the critical point by assisting the suction force of the armature 40 sucked by the pixcore 20. 50 and tuned armature 60;
Circuit breaker having a dual armature pixcore operation trip device, characterized in that comprising a.
The method of claim 1,
The armature stator 30 and the armature 40 are located on one side of the trip bar 5, and the opening 22a of the tuning fix score 50 faces the armature 40,

The tuning pickscore 50 is fixed to the lower housing 1 in a state where the other side of the trip bar 5 (opposite the bimetal and the armature stator) is positioned.

The tuning armature 60 is made of metal and is fastened to the other side of the trip bar 5 while being positioned to be spaced apart from each other so as to secure a rotational gap on the top of the tuning fix score 50. Circuit breaker with actuated trip device.
The method of claim 2,
The other armature of the mover and the fixed scorer 20 and the fixed pickscore 50 are fixed to the first fixing piece P1 at the fixing hole 1a of the lower housing together. Circuit breaker with device.
The method of claim 2,
The tuning fixture (50, Fig. 6a) is a U-shaped open top,
A lower wall plate 51 formed with a fastening hole 53 and fixed to the lower housing 1;
Both wall plate 52 extending vertically upward from the side of the lower wall plate 51,
Consisting of,

The tuning armature 60,
Extending downward to the other side of the trip bar 5 is formed to be combined or integrally
Connecting pieces 62 and 62-3,
It is composed of a metal suction plate (61, 161) that is bent at an angle from the lower portion of the connecting piece (62, 62-3) to form a rotational gap with the top surface (52a) of both wall plate (52) Circuit breaker with dual armature pixcore-enabled trips.
The method of claim 4, wherein
The tuning armature 60,
A connection piece 62 extending downward and coupled to the other side of the trip bar 5;
The metal suction plate 61 which forms an angle at the lower portion of the connecting piece 62 and is bent to the other side to form a rotational gap with the top surface 52a of the both wall plates 52 is integrally formed, or

A connecting piece 62-3 formed of a plastic resin so as to extend downward on the other side of the trip bar 5;
Dual armature fixes, characterized in that composed of a metal suction plate 161 to form a rotational gap with the top surface 52a of the two wall plate 52 on the horizontal portion (62-3a) of the connecting piece (62-3). Circuit breaker with core actuated trip.
The method of claim 3,
FIG. 6B: The fixer 20 is positioned on one side via a connecting plate 120, and is configured such that the synchronous fixer 50 is positioned on the other side.
The pixcore 20 has a c-shape with one side open
Both wall plates 52 are bent to one side from the sides of the body plate 21 and the body plate 21,
Consisting of,

The tuning fixtures 50 have a U-shape with an open top.
A lower wall plate 51 formed with a fastening hole 53 and fixed to the lower housing 1;
Consists of both wall plate 52 extending vertically upward from the side of the lower wall plate 51,

The connecting plate (120) and the lower wall plate 51 is a circuit breaker having a dual armature pick-score tripping device, characterized in that formed in one plane.

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