KR101828559B1 - Circuit Breaker - Google Patents

Abstract

According to the present invention, a circuit breaker with an improved armature support structure comprises: upper and lower housings; a handle for applying or blocking power; a trip bar for blocking the power by tripping the handle; and a trip device for driving the trip bar. The trip device includes: a stator (10) having a first bending part designed to raise a suction force by an electromagnetic force corresponding to a current always flowed in a position closing a converter, and positioned in an upper part so as to be fastened and fixed to the lower housing by a fixing piece passing through a first fastening hole (11); a bimetal (20) partially positioned in a lower part of a fixing part (10), formed in an L shape, and curved when an overcurrent flows therein; an armature (30) sucked by the suction force of the stator (10) when the overcurrent flows due to an abnormal current generated in a circuit; and a supporter (40) rotatably supporting a lower part of the armature (30) while being supported by the lower housing.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a circuit breaker having a dual amateur fix core-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker having a circuit breaker having a dual amateur-operated trip device, and more particularly to a circuit breaker having a circuit breaker, Dual amateur fix which can ensure instantaneous tripping operation at over current value which is less than the over current value that the existing one amateur and fixed core operate due to the interaction of the main amateur fix core and the tuned amateur fix core. A circuit breaker with a core-actuated trip device is provided.

In recent years, as the IEC (K61009-1, Residential Circuit Breaker with overcurrent protection device for residential and similar purposes) is changed in the standard KS of residential earth leakage circuit breaker, the description of short circuit breaking performance must be satisfied, A technique that satisfies the short-circuit performance has become necessary.

Generally, a small overcurrent circuit breaker should be able to operate instantaneously even if the short circuit performance is over 500A in accordance with ICE standard, while reducing its size. According to the specification of such a small overcurrent circuit breaker, amateur devices have been developed in order to enable tripping due to the magnetic force of the coil when an overcurrent occurs.

In the conventional art for such an object, Patent No. 10-0923683 discloses an amateur device applied to a small overcurrent circuit breaker. The overcurrent circuit breaker disclosed in this patent document comprises a bimetal, a fixed core, an armature and a fixed base, The upper yoke is configured to include a hinge region to which the armature is rotatably coupled.

In the overcurrent circuit breaker equipped with the armature, when the short circuit current larger than the overcurrent flows in the energizing circuit, the armature moves to the fixed core due to the attracting force to turn the trip bar of the circuit breaker into the trip position to cut off the short circuit current. However, in the overcurrent circuit breaker disclosed in the above patent document, there is a limitation in the installation space because a fixing table for fixing the armature is additionally provided, thereby making it difficult to manufacture the breaker relatively small.

KR 10-0923683 B1 KR 10-1098226 B1

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems of the conventional circuit breaker as described above, and it is an object of the present invention to provide a circuit breaker comprising a thermal motion mechanism using a bimetal and an armature using a magnetic resistance, Dual amateur fix core operation that is easy to assemble and manufacture, can accurately perform current interruption operation, and allows designers to overcome space limitations and adjust (down) instantaneous trip current values by amateur fix core And an object of the present invention is to provide a circuit breaker having a trip device.

According to the present invention, the dual amateur / fix core and the synchronized amateur / fix core can cause instantaneous trip operation at an excess current value that is smaller than the overcurrent value of the existing one amateur and fixed core due to the interaction of the main amateur / To provide a circuit breaker with an amateur fix core actuated trip device.

1: Lower housing

3: Handle

5: Trip bar

10: Bimetal

20: Fix core

23: fastening hole

30: Amateur stator

35: protruding rods

40: amateur

50: Synchronous Fix Core

60: Tuned amateur

P1: a first stationary piece

S1: first rotating shaft

22a: opening

According to the present invention, there is provided a circuit breaker comprising: a bimetallic thermal movement mechanism; and an armature using a magnetoresistance resistor. The structure is simple, A dual amateur that can easily perform assembly and fabrication, can perform the current interruption operation correctly, and can overcome the space limitations of the designer and adjust the instantaneous trip current value by the amateur fix core (downward setting) A circuit breaker with a fix core actuated trip device is provided.

The present invention relates to a dual amateur operation type in which an instantaneous trip operation can be performed at an excess current value smaller than an excessive current value at which an existing amateur and fixed core operate due to interaction between a main armature / fix core and a tuned armature / A circuit breaker with a trip device is provided.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an overall perspective view of a circuit breaker according to the present invention (upper housing removal).
2 is a front view of a circuit breaker according to the present invention (main amateur and fix core, tuned amateur and fix core).
3 (a) shows the main amateur and fix core of the present invention, the tuned amateur and the fix core instantaneous trip state
FIG. 3 (b) shows the main amateur and fix core of the present invention, synchronized amateur and fix core post-trip state
4 is a bottom perspective view of the lower housing of the present invention (the synchronizing fix core fixing groove).
5 (a) and (b) are a trip bar and a tuning armature coupling diagram according to the first and second embodiments of the present invention;
6A is a perspective view of a tuned amateur and a synchronized fix core according to the first embodiment of the present invention.
6B is a perspective view of the tuning fix core according to the second and third embodiments;
7 is a main amateur stator (striking stick) and a main fix core perspective view.
Figs. 8 (a) and 8 (b) are perspective views of the circuit breaker left and right of the present invention (before mounting the tuning armature and the tuning fix core)

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A circuit breaker having a dual amateur fix core operating trip device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 2 is a front view of a circuit breaker according to the present invention (a main armature and a fix core, a tuning armature and a fix core), Fig. 3 (a) is a front view of the circuit breaker according to the present invention FIG. 3 (b) shows the main amateur and fix core of the present invention, the synchronized amateur and fix core after the instantaneous trip, FIG. 4 shows the state of the main housing of the present invention, 5A and 5B show a trip bar and a tuning armature coupling according to the first and second embodiments of the present invention. FIG. 6A is a perspective view of the tuning bar according to the first embodiment of the present invention. Fig. 8 is a perspective view of a main amateur stator and a main fix core. Fig. 8 (a) and Fig. 8 (b) are a perspective view of a tuning fixture core according to the second and third embodiments, The circuit breaker of the present invention, A (tuning and tuning armature core fitted around the fix).

As shown in FIGS. 1, 2 and 8, the circuit breaker with the dual amateur fix core operating trip device of the present invention includes a lower housing 1 and a handle 3 for applying or cutting off power, A trip bar (5) for tripping the handle (3) to cut off the power supply, and a trip device for driving the trip bar (5).

1 and 2, a trip device of a circuit breaker having a dual armature fix core-operated trip device of the present invention includes a bimetal 10, a fix core 20, an armature stator 30, (40), a tuning fix core (50) and a tuning armature (60). The bimetal 10 is located at a lower portion of the fix core 20 and extends upward to one side of the trip bar so that the bimetal 10 is curved when an overcurrent flows therethrough and touched the upper touch portion of the trip bar. The fix core 20 is fixed to the lower housing by the first fixing piece P1 passing through the fastening hole 23 with a bending portion designed to increase the attracting force by the electromagnetic force in response to the incoming current.

1, 2, and 3, the armature stator 30 is fixed to the support frame, the upper end of which is rotatable about the first rotation axis S1, The striking protruding bar 35 for touching the trip bar 5 is protruded by the suction force of the armature 40 attracted to the fix core 20 and the lower body is arranged to be downwardly sagged by gravity. The armature 40 is fixed to the lower portion of the armature stator 30 toward the fix core 20 so that an abnormal current is generated in the converter and sucked by the attraction force of the fix core 20 when an overcurrent (short circuit current)

As shown in Figs. 3 (a) and 3 (b), the synchronized fixation core 50 and the tuned armature 60 assists the attracting force of the armature 40 attracted to the fix core 20, (Attracts) the attraction force by the electromagnetic force so that the trip bar 5 can touch the critical point or more.

Action: the size of the short-circuit current A> B la and, in case of short-circuit current tuning of A size fix the core 50 and the tuning armature 60 without fix the core 20 and the armature 40, the restoring force of the trip bar to the attractive force between The instantaneous trip operation can not be smoothly performed because the restoring force of the trip bar can not be obtained only by the attractive force between the fix core 20 and the armature 40 when a short circuit current of less than A is generated. At this time, the electromagnetic attraction force between the synchronizing fixation core 50 and the tuning armature 60 is synchronized with the suction force between the main fix core 20 and the armature 40 or assist the suction force, The instantaneous trip operation can be smoothly and completely performed by overcoming the restoring force of the trip bar in the event of occurrence.

As shown in FIGS. 1, 2, 3, 4, and 8, the armature stator 30 and the armature 40 are located at one side of the trip bar 5, 22a are oriented toward the armature 40 and the tuning fix core 50 is fixed to the lower housing 1 in a state where the other side of the trip bar 5 (opposite to the bimetal and the armature stator) is located. The tuning armature 60 is made of a metal and is fastened to the other side of the trip bar 5 and is spaced apart from the upper portion of the tuning fixture core 50 so as to secure a rotation clearance. The other side of the mover, the fix core 20 and the tuned fix core 50 are fixed to the first fixing piece P1 in the fixing hole 1a of the lower housing.

Action : In this case, it is possible to overcome the limitation of the space in the circuit breaker for a small residential house and maximize the use of the narrow space, so that the instantaneous trip current value can be lowered or adjusted as intended by the designer.

6A is a top view of the tuning fixture core 50. As shown in Figs. 3 (a) and 3 (b), Figs. 5 and 6, And a pair of wall plates 52 extending vertically upward from the sides of the lower wall plate 51. The lower wall plate 51 is fixed to the lower wall plate 51, The tuning armature 60 includes connecting pieces 62 and 62-3 extending downward on the other side of the trip bar 5 to be coupled or integrally formed with the connecting pieces 62 and 62-3, And metal suction plates (61, 161) that are bent and bent to form a rotation clearance with the upper end surface (52a) of the both wall plates (52).

5A and 6A, the tuning armature 60 includes a connecting piece 62 extending downwardly to the other side of the trip bar 5 and a connecting piece 62 extending downward from the lower side of the connecting piece 62, And a metal suction plate 61 that forms a rotation clearance with the upper end surface 52a of the both wall plates 52 is integrally formed.

Alternatively, as shown in Fig. 5B, a connecting piece 62-3 formed of a plastic resin extending downward on the other side of the trip bar 5, and a connecting piece 62-3 formed on the horizontal part 62-3a of the connecting piece 62-3 And a metal suction plate 161 that forms a rotation clearance with the upper end surface 52a of the both wall plates 52.

6 (b), the fix core 20 is positioned on one side of the link plate 120 and the tuned fix core 50 is located on the other side. The fix core 20 is formed in a U-shape in which one side is opened and bent to one side from the sides of the body plate 21 and the body plate 21 to form both wall plates 52. The tuning fix core 50 includes a lower wall plate 51 having a U-shaped upper opening and having a fastening hole 53 formed therein and fixed to the lower housing 1; And a wall plate 52 made of a metal plate. The connection plate 120 and the lower wall plate 51 are integrally formed as a single plane.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, ≪ RTI ID = 0.0 > and / or < / RTI >

It is to be understood that the appended claims are intended to supplement the understanding of the invention and should not be construed as limiting the scope of the appended claims.

1: Lower housing
3: Handle
5: Trip bar
10: Bimetal
20: Fix core
30: Amateur stator
40: amateur
50: Synchronous Fix Core
60: Tuned amateur

Claims (6)

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

The trip device includes:
A bimetal (10) located at a lower portion of the fix core (20) and extending upward to one side of the trip bar so as to be bent when the over current flows therein to touched the upper touch portion of the trip bar;
A fix core 20 fixed to the lower housing by a fixing piece P1 having a bending portion designed to enhance a suction force by an electromagnetic force in response to an incoming electric current;
The upper end of the trip bar 5 is fixed to the support frame forming the rotation axis of the handle 3 so as to rotate about the first rotation axis S1 and the attracting force of the armature 40 attracted to the fix core 20 An armature stator 30 protruding from the striking protruding bar 35 to be touched and a lower body suspended from the body by gravity;
An armature 40 fixed to the lower portion of the armature stator 30 toward the fix core 20 and being attracted by the attraction force of the fix core 20 when an overcurrent (short-circuit current) ;
A tuning screw core 35 for assisting the attracting force of the armature 40 attracted to the fix core 20 so as to assist the attracting rod 35 by touching the trip bar 5 beyond a critical point, (50) and a tuning armature (60);
And,

The armature stator 30 and the armature 40 are located at one side of the trip bar 5 and the opening 22a of the fix core 20 is oriented toward the armature 40,
The tuning fixation core 50 is fixed to the lower housing 1 in a state where the other side of the trip bar 5 (opposite to the bimetal and the armature stator)
The tuning armature 60 is made of metal and is fastened to the other side of the trip bar 5 and is spaced apart from the upper portion of the synchronizing fixation core 50 so as to secure a rotation clearance.

The tuning fixture core 50 has a U-shaped upper opening,
A lower wall plate 51 formed with a fastening hole 53 and fixed to the lower housing 1,
A pair of wall plates 52 vertically extending upward from the sides of the lower wall plate 51,
Lt; / RTI >
The tuning armature (60)
And extend downward on the other side of the trip bar 5 to be coupled or integrally formed
The connection pieces 62 and 62-3,
And metal suction plates 61 and 161 which are bent at an angle from the lower side of the connecting pieces 62 and 62-3 to the other side to form a rotation clearance with the upper end surface 52a of the both wall plates 52 A circuit breaker with a dual amateur fix core-operated trip device.
5. The method of claim 4,
The tuning armature (60)
A connecting piece 62 extending downward to be coupled to the other side of the trip bar 5,
A metal suction plate 61 which forms an angle at the lower portion of the connecting piece 62 and bends toward the other side to form a rotation clearance with the upper end surface 52a of the both wall plates 52,
A connecting piece 62-3 formed of a plastic resin extending downward on the other side of the trip bar 5,
And a metal suction plate (161) which forms a rotation gap with an upper end surface (52a) of the both wall plates (52) on a horizontal portion (62-3a) of the connecting piece (62-3) Circuit breaker with core operated trip device.
5. The method of claim 4,
The fix core 20 is positioned on one side of the connection plate 120 and the tuned fix core 50 is positioned on the other side of the fix core 20,
The fix core 20 has a U-shape in which one side is open,
Is bent to one side from the sides of the body plate 21 and the body plate 21,
Lt; / RTI >
Wherein the connecting plate (120) and the lower wall plate (51) are integrally formed as a single plane.

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