KR101856717B1 - Instantaneous release apparatus and breaker - Google Patents

Abstract

The present invention relates to an instantaneous trip device and a circuit breaker. The instantaneous trip device comprises: a bimetal installed inside a circuit breaker, allowing an electrical current to flow, and fixed to the inside of the circuit breaker so that one side surface of the bimetal does not move; a trip bar installed at a position close to the bimetal, maintaining a contact of a circuit contact point where an electrical current flows when positioned at a first position, and blocking an electrical current by separating a contact of a circuit where an electrical current flows when located at a second position; a yoke fixed on the bimetal not to be moved, including a penetration hole in the middle of a body, and including a hinge coupling hole on an upper part; a wire having one side surface contacted with the bimetal, and the other side surface connected to a circuit breaker circuit through the penetration hole of the yoke to allow an electrical current to flow; and an armature coupled to a hinge fixing member, coupled to the yoke, and moving the trip bar from the first position to the second position while rotating around the hinge fixing member as a central axis when an overcurrent flows in the wire.

Description

[0001] INSTANTANEOUS RELEASE APPARATUS AND BREAKER [0002]

The present invention relates to an instantaneous trip device and a circuit breaker, and more particularly, to an instantaneous trip device that turns off a circuit breaker when an overcurrent flows in the circuit breaker, And a circuit breaker.

In order to use electricity, there must be a circuit through which an electric current can flow, and an electric current of a proper amount must flow through the circuit before the connected electric devices can operate normally. If the current is too low, the electric device will not operate. If the electric current is too high, the electric device may fail, and in severe cases, it may lead to a fire. In order to prevent such accidents, a circuit breaker is installed in a circuit of a home, a factory, or the like to measure an electric current flowing through the circuit and to prevent an accident by blocking current flowing in the circuit when a current over a proper value flows.

Generally, the circuit breaker according to the prior art includes a bimetal which can react slowly when an overcurrent flows in the circuit and the circuit can be shut off.

However, the bimetal can cut off the circuit without a problem if a current slightly exceeding the rated range flows due to a minor accident, but an overcurrent exceeding the rated range, for example, 10 times the rated current The bimetal needs to be structured to block the current quickly because the reaction is slow and not suitable.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an instantaneous trip device and a circuit breaker which are improved in the ability to shut off a current than a conventional instant trip device and a circuit breaker when an overcurrent flows in the circuit do.

Another object of the present invention is to provide an instantaneous trip device and a circuit breaker that can be applied to an industrial breaker in addition to the conventional modular instantaneous trip device.

In order to solve the above-described problems, in the instantaneous trip device according to the present invention,

A bimetal installed inside the circuit breaker and capable of flowing an electric current and fixed at one side thereof to the inside of the circuit breaker by a fixing member; A trip bar provided at a position close to the bimetal to maintain a contact of a circuit contact through which current flows if the contact is located at a first position and disconnect the contact of a circuit through which a current flows when the contact is in a second position; A yoke fixed on the bimetal so as not to move, a through hole in the middle of the body, and a hinge coupling at an upper portion thereof; A wire having one side thereof contacted with the bimetal and the other side connected to a breaker circuit through a through hole of the yoke to flow current; And an armature coupled to the yoke by being coupled with the hinge fixing member and capable of moving the trip bar from the first position to the second position while being rotated about the center axis of the hinge fixing member when an overcurrent flows through the wire .

According to an embodiment of the present invention, the armature may include: a hinge fixture through which the hinge fixing member penetrates and can function as a hinge by engaging with the hinge coupling of the yoke; A lower portion which is urged by a magnetic field due to the overcurrent and moves in the direction of the wire by rotating the hinge fixing member about a central axis when an overcurrent flows through the wire; And a through hole fixed to the trip bar by engaging with a fixing screw, the through hole having a larger width than a body of the fixing screw and a ring larger than the head of the fixing screw.

According to an embodiment of the present invention, the through-hole of the loop may be formed in a shape that the upper portion of the armature is opened in a C shape.

According to an embodiment of the present invention, the armature of the armature may be formed in a U-shape and fixed by sandwiching an upper portion of the trip bar between an upper side and a lower side of a U-shaped shape of the loop.

According to an embodiment of the present invention, the through-hole of the yoke may be formed with one side open.

According to an aspect of the present invention, there is provided a circuit breaker according to an embodiment of the present invention,

A bimetal installed inside the circuit breaker and capable of flowing current and fixed to the circuit breaker by a fixing member on one side; A trip bar installed at a position close to the bimetal to maintain contact of a circuit contact through which current flows at a first position when in a steady state and to move to a second position when an overcurrent flows through the circuit, A yoke fixed on the bimetal so as not to move on the bimetal, the yoke including a through hole in the middle of the body and an engaging portion on the upper portion; One side being in contact with the bimetal and connected to the breaker circuit through a through-hole of the yoke to conduct current; And an armature which can move the trip bar from the first position to the second position while rotating around the hinge part when an overcurrent flows through the wire, the hinge part being able to engage with the yoke by inserting a rotary pin, And an instantaneous trip device including an armature.

According to one embodiment of the present invention, the armature of the armature includes a through hole, and a fixing screw is coupled to the trip bar through the through hole, the width of the through hole being larger than the body of the fixing screw, It may be one that includes a larger instantaneous trip device than the head of the screw.

According to an embodiment of the present invention, the through-hole of the loop may include an instantaneous trip device formed in a U-shaped top opening of the armature.

According to an embodiment of the present invention, the armature of the armature may include a momentary trip device formed in a U-shape to insert the upper portion of the trip bar into the upper portion of the trip bar.

According to an embodiment of the present invention, the through-hole of the yoke may include a momentary trip device having one side opened.

According to an embodiment of the present invention, there is provided an instantaneous trip method for solving the above problems,

Flowing an overcurrent whose current flowing in the wire exceeds a normal range; Forming a magnetic field around the wire by the overcurrent; The lower portion of the armature fixed to the yoke is subjected to the force by the magnetic field and is rotated about the hinge and moved in the direction of the wire; And moving the trip bar from the first position to the second position while rotating the upper portion of the armature about the hinge while moving the lower portion of the armature.

It is an object of the present invention to provide an instantaneous trip device having a miniaturized structure different from a conventional modular voltage trip device and to provide an instantaneous trip device which can be applied not only to a breaker having a space margin but also to a breaker having no space margin, A trip device and a breaker can be provided.

In addition, by providing a miniaturized instantaneous trip device and a circuit breaker, it is possible to provide a more improved shutdown function than existing instant trip devices and circuit breakers regardless of the space margin of the circuit breaker.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
FIG. 1 is a perspective view and an exploded perspective view of an instantaneous trip device comprising a combination of a yoke and an armature according to an embodiment of the present invention.
2 is a perspective view of the instantaneous trip device using a wire according to an embodiment of the present invention.
FIG. 3 shows a state where the trip bar moves from the first position to the second position when an instantaneous trip device according to an embodiment of the present invention is operated by an overcurrent flow.
4 illustrates an exemplary embodiment of an armature of an armature according to the present invention.
5 illustrates an exemplary embodiment of a through-hole of a yoke according to an embodiment of the present invention.
6 is a perspective view of an instantaneous trip device using a wire installed inside a circuit breaker according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments will be described in detail below with reference to the accompanying drawings.

The following examples are provided to aid in a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, this is merely an example and the present invention is not limited thereto.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification. The terms used in the detailed description are intended only to describe embodiments of the invention and should in no way be limiting. Unless specifically stated otherwise, the singular forms of the expressions include plural forms of meanings. In this description, the expressions "comprising" or "comprising" are intended to indicate certain features, numbers, steps, operations, elements, parts or combinations thereof, Should not be construed to preclude the presence or possibility of other features, numbers, steps, operations, elements, portions or combinations thereof.

It is also to be understood that the terms first, second, etc. may be used to describe various components, but the components are not limited by the terms, and the terms may be used to distinguish one component from another .

Hereinafter, exemplary embodiments of instantaneous trip devices and breakers according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view and an exploded perspective view of an instantaneous trip device comprising a combination of a yoke and an armature according to an embodiment of the present invention.

Referring to FIG. 1 (a), the instantaneous trip device according to an embodiment of the present invention may include a yoke 210, a hinge fixing member 220, and an armature 230.

The yoke 210 may include a fastener 211. The yoke 210 may be fixed to the interior of the circuit breaker through the fixture 211. The yoke 210 may be fixed to the inside of the circuit breaker by coupling a fixing member to the fixing member 211. The yoke 210 may be fixed together with the bimetal on the inner circumference of the circuit breaker by inserting the fixing member 211 into the fixture of the bimetal and then connecting the fixing member. The fixing member may include a screw.

The yoke 210 may include a through hole 212. The through-hole 212 can pass through a wire as a passage through which a current flows in the breaker. The yoke 210 may be configured such that the wire passes through the through hole 212 to allow a current to flow in the circuit breaker.

The hinge fixing member 220 may fix or join the yoke 210 and the armature 230.

The yoke 210 may include a hinge coupling 213. The armature 230 may include a hinge fastener 232 and the hinge fastener 232 of the armature 230 and the hinge fastener 213 of the yoke 210 may be coupled to the hinge fastener 220 The armature 230 and the yoke 210 are coupled with each other by inserting or coupling the hinge fixing member 220 into the hinge fastener 232 arranged in a row so that the instantaneous trip device .

In the combined instant trip device, the yoke 210 may be fixed and not movable, and the armature 230 may be rotated with the hinge fixing member 220 as a rotation axis.

The armature 230 may include a ring 231, a hinge fastener 232, and a lower portion 233.

The ring 231 and the lower portion 233 may be separated based on the hinge fastener 232.

Referring to FIG. 1 (b), the instantaneous trip device in which the yoke 210 and the armature 230 are combined can be coupled or fixed by the hinge fixing member 220.

When the lower portion 233 of the armature 230 receives the force in the magnetic field due to the overcurrent flowing through the wire and rotates in the wire direction, the ring portion 231 rotates, Position to the second position.

2 is a perspective view of the instantaneous trip device using a wire according to an embodiment of the present invention.

Referring to FIG. 2, the bimetal 310 may be included in the breaker. The bimetal 310 may function as a passage through which current flows. The bimetal 310 may contact one side of the wire 340 to allow current to flow.

The bimetal 310 may include a fixture. The bimetal 310 may be fixedly coupled to the fixing member 350 in the circuit breaker. The bimetal 310 may be fixed by coupling the fixing member 350 to the fixing member inside the circuit breaker.

The material of the bimetal 310 may be a material through which a current can flow. The bimetal 310 may be a heterogeneous alloy material.

The fixing member 350 may be made of a metal material. The fixing member 350 may be made of a steel material.

The circuit breaker according to an embodiment of the present invention may include a trip bar 320. The trip bar 320 may be located near the bimetal 310. The proximate point may include a first position and a second position.

When the trip bar 320 is positioned at the first position, the trip bar 320 may maintain contact with a circuit of a circuit through which current flows in the circuit breaker. The contact can be held so that the contact can not be maintained at all times by the internal structure of the breaker. When the trip bar 320 is positioned at the first position, a force opposite to the force received by the contact may be applied to maintain the contact. When the trip bar 320 is positioned at the first position, the force for separating the contact point and the force applied by the trip bar 320 are balanced so that the contact of the contact point can be maintained, Closed circuit can be maintained.

When an overcurrent flows in the breaker, the instantaneous trip device can be operated, and the trip bar 320 can be moved from the first position to the second position.

When the trip bar 320 is moved to the second position, the force applied by the trip bar 320 to maintain the contact at the first position disappears and only the force that causes the contact to be distanced leaves the contact, Can be spaced apart. When the contact is separated, the circuit including the circuit breaker becomes an open circuit, so that the current can be cut off.

The trip bar 320 may include a hinge and may rotate about the hinge to move between a first position and a second position.

The trip bar 320 may be a plastic material. The trip bar 320 may be made of a nylon material.

The circuit breaker according to an embodiment of the present invention may include a yoke 210. The yoke 210 may include a fixture 211. The fixture 211 may be aligned with the fixture of the bimetal 310 and may then be coupled with the fixture 350 to be fixed within the breaker . The fixing member 350 may include a screw.

The yoke 210 may be made of a metal material. The yoke 210 may be made of a steel material.

The circuit breaker according to an embodiment of the present invention may include a wire 340. And may include the wire 340.

One side of the wire 340 is in contact with the bimetal 310 and the other side of the wire 340 is in contact with the circuit breaker circuit. The yoke 210 may include a through hole 212 and the wire 340 may pass through the through hole 212 to connect the bimetal 310 with the circuit.

The wire 340 may be made of a material through which a current can flow. The wire 340 may be a metal material. The wire 340 may be a copper material.

The circuit breaker according to an embodiment of the present invention may include an armature 230 and the armature 230 may be fixed or coupled using the yoke 210 and the hinge fixing member 220.

The armature 230 may rotate about the hinge fixing member 220 as a center axis. The armature 230 may be positioned on the wire 340 passing through the through hole 212 of the yoke 210.

The hook 231 of the armature 230 may be fixed to the trip bar 320 in combination with the fixing screw 330. The annular portion 231 of the armature 230 may include a through-hole. The diameter or length of the through-hole may be smaller than the head of the fixing screw 330 and larger than the body of the fixing screw 330. The trip bar 320 may be moved in the same direction when the armature 230 moves by engaging the fixing screw 330 with the trip bar 320 through the through hole.

The through-hole may be formed in a circular closed form. The through-hole may be formed with one side opened. The through-hole may be formed in a U-shaped top opening manner and may be installed in such a manner that the annular portion 231 of the armature 230 is laid on or sandwiched with the base fixing screw 330.

The hinge fixing member 220 may be made of a metal material. The hinge fixing member 220 may be made of a steel material.

The armature 230 may be made of a metal material. The hinge fixing member 220 may be made of a steel material.

The fixing screw 330 may be made of a metal material. The fixing screw 330 may be made of a steel material.

FIG. 3 shows a state where the trip bar moves from the first position to the second position when an instantaneous trip device according to an embodiment of the present invention is operated by an overcurrent flow.

Referring to FIG. 3 (a), in a steady state, the trip bar 320 of the instantaneous trip device according to an embodiment of the present invention may be located at the first position 401.

The bimetal 310 may be fixed to the circuit breaker and may not move. When the bimetal 310 generates an overcurrent and blocks current, only the trip bar 320 may move.

This steady state may mean that the current within the allowable current range of the circuit breaker is within a range where current can flow in the circuit to which the circuit breaker is connected without overloading.

When the trip bar 320 is located at the first position 401, it is possible to maintain the function of allowing the contact to maintain the contact so that current may flow through the circuit breaker. The contact of the contact is maintained so that the circuit including the breaker can be kept closed.

Referring to FIG. 3 (b), the positions of the bimetal 310 and the trip bar 320 when the overcurrent flows can be confirmed.

When the bimetal 310 does not move in the state of being fixed in the circuit breaker and an overcurrent flows to the wire 340 to increase the magnetic field, the force of the lower portion 233 of the armature 230 due to the magnetic field becomes sufficiently large, It can move in the wire direction. The trip bar 320 may move from the first position 401 to the second position 402 by a force applied when the armature 230 moves. At this time, the armature 230 can move from the first position 401 to the second position 402 by rotating the hinge fixing member 220 about the center axis.

When the trip bar 320 moves to the second position 402, the contact of the contact maintaining the contact at the first position 401 can not be maintained and can be separated and separated. At this time, the contact point is spaced apart, so that the circuit including the breaker is in an open state, and a current can not flow through the circuit.

4 illustrates an exemplary embodiment of an armature of an armature according to the present invention.

4, the hook 501 of the armature 230 may have a U-shape, and the U-shaped spacing may be longer than the upper thickness of the trip bar 320. Referring to FIG. The upper portion of the trip bar 320 can be straddled or fitted between the U-shaped portions of the hook 501 of the armature 230. [

The annular portion 231 of the armature 230 may have a shape including a through hole. The through-hole may be formed in a shape in which four sides are closed. The through-hole may have a shape in which one side is opened. The through-hole may be in the form of a U-shape with an open top. At this time, the upper portion of the trip bar 320 and the armature 230 may be fixed by fixing screws 330 to the through holes.

The through-hole may be formed in a shape in which one of upper, lower, left, and right is opened. At this time, the length between the closed side surfaces of the through-hole or the width of the through-hole may be larger than the body of the fixing screw 330 and smaller than the head of the fixing screw 330.

5 illustrates an exemplary embodiment of a through-hole of a yoke according to an embodiment of the present invention.

Referring to FIG. 5, the yoke 210 according to an embodiment of the present invention may include a through hole 611.

The through-hole 611 may be formed in a closed form, but is not limited thereto and may be open on one side. The direction in which the through-hole 611 is opened may be any one of up, down, left, and right.

The through-hole 611 is opened at one side, and the wire can be inserted into the through-hole 611 through the open surface.

6 is a perspective view of an instantaneous trip device using a wire installed inside a circuit breaker according to an embodiment of the present invention.

Referring to FIG. 6, the circuit breaker 700 may include a bimetal 310 and a wire 340 as a passage through which current flows. At this time, the trip bar 320 may be located at a position close to the bimetal. The trip bar 320 may be located at a first position when the trip bar 320 is in a steady state and may move to a second position when the instantaneous trip device operates. The steady state may include a state in which the circuit connected to the breaker 700 can be normally operated without being overloaded. The allowable current range in which the overload is not applied may be different depending on the breaker 700.

The bimetal 310 of the breaker 700 may include a fixture and may be fixed within the breaker 700 by coupling the fixture 350 to the fixture. The fixing member 350 may be fixed to the inside of the circuit breaker 700 by engaging with the fastener 211 of the yoke 210. The fixing member 350 may be coupled with the fixture of the bimetal 310 and the fixture 211 of the yoke 210 to fix the bimetal 310 and the yoke 210 inside the circuit breaker 700 have. The yoke 210 may include a through hole 212 and a wire 340 whose one side is in contact with the bimetal and whose other side is in contact with the internal circuit of the circuit breaker 700 is connected to the through hole 212 So that both side surfaces can be brought into contact with each other.

An armature 230 may be coupled to the wire 340 and the yoke 210. The hook 231 of the armature 230 may be fixed to the trip bar 320 in combination with the fixing screw 330. When the armature 230 fixed to the trip bar 320 moves, the trip bar 320 can also be moved. The hook portion 231 may be a C-shaped hook portion 501 and the C-shaped hook portion 501 may be formed in a shape to hang or fit into the trip bar 320 without a fixing screw 330. [ . When the C-shaped hook 501 fixed to the trip bar 320 moves, the trip bar 320 can also be moved.

The instantaneous trip device in which the yoke 210 and the armature 230 are installed in only one of the two wires 340 and the yoke 210 and the armature 230 are coupled to each other And may be installed on all the wires 340 so as to be able to operate on all the wires 340.

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, . Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims, as well as the appended claims.

210: York
220: hinge fixing member
230: Amateur
310: Bimetal
320: Trip bar
340: wire

Claims (11)

A bimetal installed inside the circuit breaker and capable of flowing an electric current and fixed at one side thereof to the inside of the circuit breaker by a fixing member;
A trip bar provided at a position close to the bimetal to maintain a contact of a circuit contact through which current flows if the contact is located at a first position and disconnect the contact of a circuit through which a current flows when the contact is in a second position;
A yoke fixed on the bimetal so as not to move, a through hole in the middle of the body, and a hinge coupling at an upper portion thereof;
A wire having one side thereof contacted with the bimetal and the other side connected to a breaker circuit through a through hole of the yoke to flow current;
And an armature coupled to the yoke by being coupled with the hinge fixing member and capable of moving the trip bar from the first position to the second position while being rotated about the center axis of the hinge fixing member when an overcurrent flows through the wire, ,
The armature may include a hinge fixture through which the hinge fixing member penetrates and can function as a hinge by engaging with the hinge coupling of the yoke; A lower portion which is urged by a magnetic field due to the overcurrent and moves in the direction of the wire by rotating the hinge fixing member about a central axis when an overcurrent flows through the wire; And a through hole including a ring portion to be fixed to the trip bar,
Wherein the armature ring is formed in a U shape and is fixed to an upper portion of the C-shaped upper side of the armature by sandwiching an upper portion of the trip bar between the upper side and the lower side of the armature, Instantaneous trip device.
delete The method according to claim 1,
The through-
And the upper portion of the armature is opened in a U-shape.
delete delete A bimetal installed inside the circuit breaker and capable of flowing an electric current and fixed at one side thereof to the inside of the circuit breaker by a fixing member;
A trip bar provided at a position close to the bimetal to maintain a contact of a circuit contact through which current flows if the contact is located at a first position and disconnect the contact of a circuit through which a current flows when the contact is in a second position;
A yoke fixed on the bimetal so as not to move, a through hole in the middle of the body, and a hinge coupling at an upper portion thereof;
A wire having one side thereof contacted with the bimetal and the other side connected to a breaker circuit through a through hole of the yoke to flow current;
And an armature coupled to the yoke by being coupled with the hinge fixing member and capable of moving the trip bar from the first position to the second position while being rotated about the center axis of the hinge fixing member when an overcurrent flows through the wire, ,
The armature may include a hinge fixture through which the hinge fixing member penetrates and can function as a hinge by engaging with the hinge coupling of the yoke; A lower portion which is urged by a magnetic field due to the overcurrent and moves in the direction of the wire by rotating the hinge fixing member about a central axis when an overcurrent flows through the wire; And a through hole including a ring portion to be fixed to the trip bar,
Wherein the armature of the armature is formed in the shape of a letter U so that an upper portion of the trip bar is inserted into the ring portion, and a through hole of the yoke is formed in an opened form.
delete The method according to claim 6,
The through-
And an instantaneous trip device formed in a U-shaped top opening of the armature.
delete delete A method for instantly tripping an instantaneous trip device,
The instantaneous trip device includes:
A bimetal installed inside the circuit breaker and capable of flowing an electric current and fixed at one side thereof to the inside of the circuit breaker by a fixing member;
A trip bar provided at a position close to the bimetal to maintain a contact of a circuit contact through which current flows if the contact is located at a first position and disconnect the contact of a circuit through which a current flows when the contact is in a second position;
A yoke fixed on the bimetal so as not to move, a through hole in the middle of the body, and a hinge coupling at an upper portion thereof;
A wire having one side thereof contacted with the bimetal and the other side connected to a breaker circuit through a through hole of the yoke to flow current;
And an armature coupled to the yoke by being coupled with the hinge fixing member and capable of moving the trip bar from the first position to the second position while being rotated about the center axis of the hinge fixing member when an overcurrent flows through the wire, ,
The armature may include a hinge fixture through which the hinge fixing member penetrates and can function as a hinge by engaging with the hinge coupling of the yoke; A lower portion which is urged by a magnetic field due to the overcurrent and moves in the direction of the wire by rotating the hinge fixing member about a central axis when an overcurrent flows through the wire; And a through hole including a ring portion to be fixed to the trip bar,
Wherein the armature ring is formed in a U shape and is fixed by sandwiching an upper portion of the trip bar between an upper side and a lower side of a U-shaped shape of the ring portion, the through hole of the yoke being formed in a shape with one side open,
An overcurrent flowing in the wire exceeds a normal range using the instantaneous trip device;
Forming a magnetic field around the wire by the overcurrent;
The lower portion of the armature fixed to the yoke is rotated by the magnetic field to rotate about the hinge and moved in the wire direction; And
Moving the trip bar from a first position to a second position while rotating the upper portion of the armature about the hinge while moving the lower portion of the armature.

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