KR100896746B1 - Operating mechanism construction of earth leakage and current circuit breaker - Google Patents

Abstract

The present invention relates to an opening and closing mechanism of an earth leakage / wiring circuit breaker, and more particularly, to configure a concise structure to occupy a small space, and to separate the breaker from the distribution panel or in a state in which the circuit breaker is mounted on the distribution panel without separate separation work. The present invention relates to a switchgear of an earth leakage / wiring circuit breaker that allows an administrator to adjust an overcurrent regulator.

The circuit breaker of the circuit breaker for earth leakage / wiring according to the present invention is a circuit breaker having a bimetal for having an overcurrent blocking function in the circuit breaker for wiring, an adjustment screw for adjusting the breaking current, and an operating lever projecting out of the case. In the opening and closing mechanism of the circuit breaker, an adjustment screw groove 210 is provided on the same surface as one surface of the case 200 in which the operation lever 180 protrudes, and an adjustment screw (directly below the adjustment screw groove 210). 220 is provided, the bimetal 110 is bent, characterized in that the adjustment screw 220 is provided to be in contact with the upper side of the bent portion (111).

Earth Leakage Circuit Breaker, Circuit Breaker, Bimetal, Over Current, Adjusting Screw, Amateur

Description

Switchgear mechanism of earth leakage circuit breaker {Operating mechanism construction of earth leakage and current circuit breaker}

The present invention relates to an opening and closing mechanism of an earth leakage / wiring circuit breaker, and more particularly, to configure a concise structure so as to occupy a small space, and to separate the circuit breaker from the distribution panel or in a state in which the circuit breaker is mounted on the distribution panel without separate separation work. The present invention relates to a switchgear of an earth leakage / wiring circuit breaker that allows an administrator to adjust an overcurrent regulator.

As shown in FIG. 1, the opening / closing mechanism of the conventional circuit breaker 100 includes a power supply wire 102 connected to a bimetal 101, and adjusting an overcurrent installed at a predetermined distance from an upper end of the bimetal 101. The screw 108 and the adjustment screw 108 are coupled to one end of the trip bar 103, and the latch 104 is rotated by the operation of the trip bar 103 and the lifting of the latch 104 is rotated The fixed contact is a crossbar 107, a movable contact 105 coupled to the crossbar 107 and moving together by lifting of the crossbar 107, and a movable contact 109 provided at one end of the movable contact 105. It is configured to be in contact with and spaced apart from the 106.

As shown in FIGS. 2 to 3, when the overcurrent is energized, the operation relationship is as follows. When the overcurrent is energized through the power supply conduction 102, the bimetal 101 is caused by a difference in thermal expansion coefficient. It will be bent in one direction. When the degree of warpage is bent more than a predetermined interval between the overcurrent adjusting screw 108 and the bimetal 101, the bimetal 101 retreats the trip bar 103, and the trip bar 103 is As it retracts, the latch 104 caught by the latching jaw 111 becomes rotatable, and the crossbar 107 pressed below the latch 104 by the rotation of the latch 104 becomes the movable contact 105. Receives its own elastic force and the elastic force of the elastic member 110 provided on the lower side of the mobile contact 105 to move upwards, the mobile contact 105 that is coupled to the crossbar 107 together with the crossbar 107 While moving upwards, the moving contact 109 is spaced apart from the fixed contact 106 to turn off the circuit.

Therefore, the series of operation processes are generated only when an overcurrent such that the bimetal 101 is bent beyond the interval between the bimetal 101 and the overcurrent adjusting screw 108 is energized by the bimetal 101. By adjusting the interval between the bimetal 101 and the overcurrent adjusting screw 108, it is possible to adjust the breaking current to operate the circuit breaker 100 for earth leakage / wiring.

In the conventional circuit of the circuit breaker for earth leakage / wiring, after adjusting the distance between the bimetal and the overcurrent adjusting screw according to the breaking current, the case of the breaker is coupled to the breaker main body and mounted on the distribution board, thereby providing the overcurrent adjustment provided in the breaker. After adjusting the screw once and installing it on the distribution panel, there is a problem that it is difficult to readjust again.

That is, there is a difference in the breaking current to be cut off according to the overall circuit state in which the circuit breaker for earth leakage / wiring is installed.In order to adjust the overcurrent regulator according to the breaking current changed in this way, disconnect the breaker from the distribution panel every time, or After removing the case of the breaker from the breaker body, there is a troublesome work problem that requires adjusting the adjusting screw.

In addition, since the structure is complicated, in the situation where a large number of circuit breakers are installed in a limited distribution panel space using a large number of electronic devices as in modern times, there is a problem that the volume of the circuit breaker must be reduced.

In one embodiment of the present invention, an open / close circuit breaker for an earth leakage / wiring circuit is provided with a bimetal for providing an overcurrent breaking function to the earth leakage / wiring circuit breaker, an adjustment screw for adjusting the breaking current, and an operating lever projecting out of the case. In the above, the adjustment screw groove 210 is provided on the same surface as one surface of the case 200, the operation lever 180 is protruding, and the adjustment screw 220 is provided directly below the adjustment screw groove 210 The bimetal 110 may be bent, and the adjustment screw 220 may be provided to be in contact with the upper surface of the bent portion 111.

In the opening and closing mechanism of the earth leakage / wiring circuit breaker of one embodiment of the present invention, the amateur 130 is rotated by the bimetal 110; An adjustment screw fixing hole 142 is formed on the upper side of the first bent part 141 that is formed to be bent '-' shape, and the adjusting screw 220 is screwed, and the adjustment screw fixing hole 142 of One side of the bimetal 110 is coupled so that the upper side of the bent portion 111 of the bimetal 110 is directly below and the second bent portion 143 is bent in a 'c' shape. One end of the 130 is rotatably coupled to the shaft pin 133, the shaft pin 133 is placed on the elastic member 134, is formed to be bent to wrap the other side of the bi-metal 110 in a 'c' shape Fixed iron piece 140 consisting of a third bent portion (144); Rotation is limited by the amateur 130, the latch 150 is fixed to one end of the pair of elastic members (155, 155 '); A fixing piece (160) which is operated by the rotation of the latch (150) and on which the other end of the pair of elastic members (155, 155 ') is fixed; And a pair of movable contactors 170 and 170 ′ fixedly operated to the fixing piece 160 and rotatably coupled to one end of the actuating lever 180; and may include a roll.

Preferably, the other end of the amateur 130 may be provided with a hook portion 132 bent in a 'b' shape to wrap the other free end of the bimetal 110 spaced apart by a predetermined interval,

In addition, a locking hole 131 is formed in the amateur 130, and a latching jaw 151 is formed in the latch 150 to correspond to the locking hole 131, and the locking hole 131 is caught. Jaw 151 can be detached,

Formed to form a 'b' shape and is provided with an elastic plate 112 having an elastic force, one side of the elastic plate 112, the bending of the bimetal 110 is located directly below the adjustment screw 220. Coupled to the upper side of the portion 111, the other side of the elastic plate 112 may be coupled to the inner side of the first bent portion 141 of the fixed iron piece 140.

More preferably, the adjusting screw groove 210 may be provided with a closed cap 211.

The opening and closing mechanism of the earth leakage / wiring circuit breaker according to the present invention has a simple structure and a small space occupied in the earth leakage / wiring circuit breaker.

Change the breaking current according to the entire circuit from the circuit breaker by disconnecting the circuit breaker from the distribution panel, and then adjust the overcurrent adjusting screw without removing the case of the circuit breaker, or remove the case of the circuit breaker even when the circuit breaker is installed in the distribution panel. By easily adjusting the overcurrent adjusting screw provided on the front side, there is an effect of facilitating adjustment of the breaking current.

DETAILED DESCRIPTION Hereinafter, embodiments of the present invention in which the above object can be specifically realized are described with reference to the accompanying drawings. In describing the embodiments, the same names and symbols are used for the same components, and additional description thereof will be omitted below.

4 is a main part operation diagram showing the energized state of the switching mechanism of the earth leakage / wiring circuit breaker according to the present invention, Figure 5 is a main part operation diagram showing the breaking state of the switching mechanism when the overcurrent of the earth leakage / wiring circuit breaker according to the present invention, 6 is a front view of the energized opening and closing mechanism viewed from the direction of the movable contactors 170 and 170 ', FIG. 7 is a front view of the energized opening and closing mechanism viewed from the fixed iron piece 140 direction, and FIG. It is the front view which looked at the mechanism from the fixed iron piece 140 direction.

9 is an essential part operation diagram showing an operating state of the overcurrent regulating device of the opening and closing mechanism of the earth leakage / wiring circuit breaker according to the present invention, and FIG. to be.

As shown in FIGS. 4 and 5, an earth leakage / wiring circuit breaker according to an embodiment of the present invention includes an input terminal 190 on one side of the case 200, and one side of the input terminal 190 bent. The fixed contact 191 is formed. The fixed contact 191 is in contact with the movable contact 171 formed on one side of the movable contactor 170, the movable contactor 170 is connected to the other side of the bimetal 110 by a lead wire 310a made of an interlocking line. The bimetal 110 is installed for the overcurrent blocking function, and on the other hand, the bimetal 110 is formed of a material having a high thermal expansion rate and the opposite side is formed of a material having a low thermal expansion rate, and thus has flexibility in bending in a direction in which the thermal expansion rate decreases as the overcurrent occurs.

The adjustment screw groove 210 is provided on the same surface as the one surface of the case 200 from which the operation lever 180 protrudes, and the adjustment screw is provided directly below the adjustment screw groove 210, and the bimetal 110 is bent. The adjusting screw 220 is provided to be in contact with the upper side of the negative.

The fixed metal piece 140 to which one side of the bimetal 110 and the amateur 130 is coupled is formed at the bottom of the first bent portion 141 and the first bent portion 141 that are bent in a '-' shape. It is composed of a first bent portion 143 is bent in the 'c' shape and a third bent portion 144 is formed bent in the 'c' shape on the lower side of the first bent portion 143. An adjustment screw fixing hole 142 is formed on the upper side of the first bent part 141 to adjust the adjusting screw 220. The bending of the bimetal 110 is directly below the adjusting screw fixing hole 142. The upper side of the negative is located. In addition, one end of the amateur 130 is rotatably coupled to the first iron portion 143 which is formed to be bent in a 'C' shape, and the elastic member is disposed on the shaft pin, and the bimetal is placed on the shaft pin. The third bent portion 144 that is formed to be bent in a 'c' shape so as to surround the other side of the (110) forms a gyro (磁路) of the cross-section 'c'.

One side of the amateur 130 is rotatably fixed in a state in which the elastic member is placed on the shaft pin penetrating the iron piece facing the first bent portion 143 of the fixed iron piece 140, the engaging hole 131 on the front The latching jaw 151 corresponding to the locking hole 131 is formed in the latch 150, and the locking jaw 151 is detached by the rotation of the amateur 130 in the locking hole 131. do. In addition, the other end of the amateur 130 is provided with a hook portion 132 that is bent in a 'b' shape so as to surround the other free end of the bimetal 110 at a predetermined interval, the hook portion 132 The bimetal 110 serves to enable the bimetal 110 to rotate the armature 130 when the bimetal 110 is energized and the bimetal 110 is bent at a predetermined interval or more.

A shaft hole is formed at one side of the latch 150 and is coupled to the main body so as to be rotatable by an axial pin, and a pair of hooks 152 and 152 ′ are formed at both sides of the upper bent portion to which one end of the pair of elastic members is coupled. At the other end, a locking jaw 151 is formed to be detached and corresponding to the locking hole 131 of the amateur 130.

The other ends of the pair of elastic members, one end of which is coupled to a pair of hooks 152 and 152 'provided at both sides of the upper bent portion of the latch 150, are coupled to both sides of the fixing piece 160, respectively. The piece 160 is coupled to the engaging projection 161 of the fixed piece 160 in the coupling hole 173 formed in the pair of movable contacts (170, 170 ') and a pair of movable contacts (170, 170') and Combined.

A pair of movable contactors (170, 170 ') is fixed to the fixing piece 160 to the inside, the rotating hook 172 at one end of the upper portion, rotatably, formed on both sides of the operating lever 180 It is coupled to the locking step 151 of the lower end. In addition, one end of the lead wire made of an interlocking line is coupled to the inside coupled with the fixing piece 160, and the other end of the lead wire is coupled with the other free end of the bimetal 110. A movable contact 171 is formed at the other side of the lower side of the movable contactor 170 to be in contact with or spaced apart from the fixed contact 191 of the input terminal 190 according to the operation of the movable contactor 170.

The above description has described a case in which the opening and closing mechanism is provided at one pole of one side of the case 200, and the opposite pole movable contactor 170 is connected to the opposite pole of the case 200 on the opposite side through a lead wire made of an interlocking line. It can be directly connected to the output terminal, and in addition to the opposite side of the case 200, the opening and closing mechanism is provided on the opposite side of the case 200 of one pole, the opening and closing mechanism is provided It will be apparent to those skilled in the art that the opening and closing mechanism may be provided in pairs.

In more detail, when the overcurrent is energized in the circuit breaker for circuit leakage and wiring according to the present invention, the blocking process of the overcurrent is shown. As shown in FIGS. 5 and 7, the overcurrent is input terminal 190 and the movable contactor 170. When the bimetal 110 is energized through), one side of the bimetal 110 is formed of a material having a high thermal expansion rate, and the other side is formed of a material having a low thermal expansion rate to bend in a direction in which the thermal expansion rate decreases as the overcurrent occurs. Preferably, the bimetal 110 is formed of a material having a low thermal expansion coefficient in a direction in which the hook portion 132 of the amateur 130 is formed, and formed of a material having a high thermal expansion coefficient on the opposite side of the amateur 130. The bimetal 110 is formed to be bent toward the hook portion 132. Therefore, when the bimetal 110 is bent to the hook portion 132 of the amateur 130 by overcurrent energization, the hook metal portion 132 is pulled to the hook portion 132 and the hook portion 132 is integrally coupled to the amateur ( 130 is rotated in the direction opposite to the direction in which the latch 150 is located around the axis pin of the first bent portion 143 of the fixing iron piece 140.

As the amateur 130 rotates by the operation of the bimetal 110, the latching jaw 151 formed at the other end of the latch 150 is separated from the locking hole 131 formed in the amateur 130. Due to the elastic force of the pair of elastic members coupled to both sides of the upper bent portion of 150, the latch 150 is rotated clockwise around the shaft pin.

In addition, the elastic member engaging ring (152, 152 ') of the upper bent portion of the latch 150 is coupled to one end of the pair of elastic members is fixed to the other end of the pair of elastic members while moving clockwise Pull the 160 with the elastic force of the elastic member, the pair of movable contactors (170, 170 ') coupled with the fixing piece 160 is the elastic force of the pair of elastic members, the fixed piece 160 is coupled It is received, and the movable contact 171 of the movable contact 170 is rotated in the counterclockwise direction about the rotation engaging jaw 183 of the operating lever 180 rotatably coupled to the upper portion of the input terminal 190 The fixed contact point 191 is spaced apart to block the energization of the overcurrent.

That is, in the energized state, the movable contactor 170 and the operation lever 180 are positioned almost in a straight line, and the elastic member is also positioned substantially parallel to the inner side so that the pivoting ring 172 and the operation lever 180 of the movable contactor 170 are positioned. By the reaction force between the locking jaw (183) of the), the latch 150 and the fixing piece 160 to support the elastic force of the elastic member coupled to both ends can be maintained in a static state without rotation, but latch 150 Of the pair of elastic members coupled to the hooks 152 and 152 'as the latching jaw 151 is separated from the locking hole 131 of the amateur 130 and the latch 150 rotates clockwise. The action line is changed and an elastic force is applied to the movable contactor 170 through the fixing piece 160 to which the elastic member is coupled, so that the movable contactor 170 is counterclockwise around the pivoting jaw 183 of the operating lever 180. It will rotate. In addition, as the movable contact 170 rotates, the movable contact 171 is spaced apart from the fixed contact 191 to block the overcurrent conduction, and at the same time, the operating lever 180 is clockwise around the shaft pin of the case 200. Rotate to the end position.

에서

로 멀어지게 되며, 결국, 상기 누전 배선용 차단기의 개폐기구의 차단전류의 세기가 멀어진 간격만큼 증가하게 된다.In addition, the overcurrent adjusting device that can adjust the strength of the current that can be blocked by the switchgear of the circuit breaker in more detail, to be in contact with the upper side of the bent portion of the bimetal 110 is formed bent in a '-' shape The adjusting screw 220 is screwed to the adjusting screw fixing hole 142 of the fixed iron piece 140, and the bimetal 110 by pressing the bent portion of the bimetal 110 by rotating the adjusting screw 220. ) And the hook portion 132 formed in the amateur 130, as shown in Figure 9,

in

As a result, the strength of the breaking current of the opening and closing mechanism of the ground fault circuit breaker increases by a distance away.

Preferably, one side of the elastic plate 112 is formed in a 'b' shape and has an elastic force to be coupled to the upper surface of the bent portion of the bimetal 110, the other side is the first of the fixed iron piece 140 It is to be coupled to the lower inner surface of the bent portion 141 so that the bimetal 110 can be easily returned to its original position when the adjustment screw 220 is depressurized. In addition, in order to prevent the user from adjusting the adjustment screw 220 arbitrarily to allow the removable cap 211 to be attached to the adjusting screw groove 210 of the case 200.

Conventionally, after adjusting the distance between the bimetal 110 and the amateur 130 through the adjustment screw 220, the breaker body is installed in the distribution panel, and when the readjustment of the breaking current is necessary, the breaker body is separated from the distribution panel. Although there was a difficulty in that, the opening and closing mechanism of the earth leakage / wiring breaker according to the present invention, as shown in Figure 8, the adjustment screw groove 210 for the adjustment of the adjustment screw 220 even when the circuit breaker is mounted on the distribution board ) Is formed on the same front surface as the operation lever 180, so that the current strength of the breaking current can be easily adjusted with the adjustment screw 220 without separating the breaker from the distribution panel.

As described above, when the overcurrent energizes the bimetal 110, the bimetal 110 is bent while thermally expanding, thereby rotating the armature 130 to start a series of operations for blocking the overcurrent. Therefore, the bimetal 110 is bent in proportion to the strength of the breaking current, and the shorter the distance between the hook portion 132 and the bimetal 110 of the amateur 130 is, the smaller the breaking current is. It rotates to cut off the current.

Although several embodiments have been described above, it will be apparent to those skilled in the art that the present invention may be embodied in many other forms without departing from the spirit and scope thereof.

Accordingly, the above-described embodiments should be considered as illustrative and not restrictive, and all embodiments within the scope of the appended claims and their equivalents are included within the scope of the present invention.

1 is a perspective view showing a conventional circuit breaker for earth leakage and wiring;

2 is an essential part operation diagram showing an energized state of the circuit breaker of FIG. 1;

3 is an essential part operation diagram illustrating an overcurrent blocking state of the circuit breaker of FIG. 1;

4 is an essential part operation diagram showing the energized state of the opening and closing mechanism of the circuit breaker for earth leakage and wiring according to the present invention;

5 is an essential part operation diagram showing a cut-off state of the opening and closing mechanism when an overcurrent occurs in the circuit breaker for earth leakage and wiring according to the present invention;

6 is a front view of the open / close mechanism in the energized state as seen from the movable contactor direction;

7 is a front view of the energized opening and closing mechanism viewed from the fixed iron piece direction;

8 is a front view of the opening and closing mechanism in a blocked state as viewed from the fixed iron piece direction;

Fig. 9 is an essential part operation diagram showing an operating state of an overcurrent regulating device of an opening and closing mechanism of an earth leakage / wiring circuit breaker according to the present invention; And

Fig. 10 is a front view showing a state in which an earth leakage / wiring circuit breaker according to the present invention is mounted on a distribution panel.

Explanation of symbols on the main parts of the drawings

110: bimetal 111: bending portion

112: elastic plate

130: amateur 131: jam hole

132: hook portion 133: shaft pin

134: elastic member

140: fixed iron piece 141: first bent portion

142: adjustment screw fixing 143: the second bend

144: third bend

150: latch 151: locking jaw

152, 152 ': Hanging hook 153: Shaft work

154: shaft pins 155, 155 ': elastic member

160: fixed piece 161: engaging projection

170, 170 ': movable contact 171: movable contact

172: rotation hook 173: coupling hole

180: operating lever 181: shaft ball

182: shaft pin 183: rotation locking jaw

190: input terminal 191: fixed contact

200: case 210: adjusting screw groove

211: sealing cap 220: adjusting screw

310a, 310b: lead wire

400: distribution board

Claims (6)

In the switchgear of the circuit breaker for earth leakage / wiring, which has a bimetal for having an overcurrent cut-off function for the circuit breaker / wiring circuit breaker, an adjustment screw for adjusting the breaking current, and an operating lever projecting out of the case, The adjustment screw groove 210 is provided on the same surface as the one surface of the case 200 from which the operation lever 180 protrudes, and the adjustment screw 220 is provided directly below the adjustment screw groove 210. Bimetal 110 is bent and formed, the opening and closing mechanism of the circuit breaker for circuit breaker, characterized in that the adjustment screw 220 is provided to be in contact with the upper side of the bent portion (111). The method of claim 1, An amateur (130) rotated by the bimetal (110); An adjustment screw fixing hole 142 is formed on the upper side of the first bent part 141 that is formed to be bent '-' shape, and the adjusting screw 220 is screwed, and the adjustment screw fixing hole 142 of One side of the bimetal 110 is coupled so that the upper side of the bent portion 111 of the bimetal 110 is directly below and the second bent portion 143 is bent in a 'c' shape. One end of the 130 is rotatably coupled to the shaft pin 133, the shaft pin 133 is interposed with an elastic member 134, and bent to wrap the other side of the bimetal 110 in a 'c' shape. Fixed iron piece 140 consisting of a third bent portion (144); Rotation is limited by the amateur 130, the latch 150 is fixed to one end of the pair of elastic members (155, 155 '); A fixing piece (160) which is operated by the rotation of the latch (150) and on which the other end of the pair of elastic members (155, 155 ') is fixed; And A pair of movable contacts 170 and 170 ′ fixed to the fixing piece 160 and rotatably coupled to the operation lever 180 so that one end thereof is rotatably coupled; Switchgear. The method of claim 2, The other end of the armature 130 of the circuit breaker for circuit breaker, characterized in that the hook portion 132 is formed to be bent in a 'b' shape so as to surround the other free end of the bimetal 110 at a predetermined interval Switchgear. The method of claim 2, A locking hole 131 is formed in the amateur 130, and a locking jaw 151 is formed in the latch 150 to correspond to the locking hole 131. 151) is an opening and closing mechanism of the circuit-breaker for circuit breaker, characterized in that detachable. The method of claim 2, Formed to form a 'b' shape and is provided with an elastic plate 112 having an elastic force, one side of the elastic plate 112, the bending of the bimetal 110 is located directly below the adjustment screw 220. It is coupled to the upper side of the portion 111, the other side of the elastic plate 112 is connected to the inner surface of the first bent portion 141 of the fixed iron piece 140, the opening and closing mechanism of the circuit breaker for wiring . The method according to any one of claims 1 to 5, The adjustment screw groove 210 is an opening and closing mechanism of the circuit breaker for circuit breakers, characterized in that the closure cap 211 is further provided.

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