KR900003680Y1 - Distribution line breaker - Google Patents

Abstract

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Description

Section 4 3-Circuit Circuit Breaker

1 is a perspective view of a modular opening and closing mechanism in Section 4, 3, the display circuit breaker of the present invention.

2 is a cross-sectional view taken along the line X-X ray of FIG. 1;

FIG. 3 is a state diagram as an X-ray cross-sectional view of FIG.

4 is a cross-sectional view taken along the line X-X of FIG.

5 is a cross-sectional view taken along the line X-X of FIG.

6 is a cross-sectional view taken along the line X-X of FIG.

The present invention relates to a circuit breaker, and more particularly, to a four-section, three-display wiring breaker having a modular open / close mechanism that can be turned on / off and tripped and is easy to disassemble and repair.

In general, the circuit breaker is largely divided into a switchgear mechanism, a tripping portion and a switchgear. In the conventional circuit breaker, since these three parts are mechanically linked to each other, a large number of assembly labors are required during production, and the breaker has to be disassembled by disassembling the entire circuit breaker from the distributor when repairing a malfunction, which is not easy to repair. In addition, the opening and closing mechanism only displayed the on state and the off state (including the off state by tripping), and the trip state could not be displayed separately, so there was no stability.

Therefore, the object of the present invention is to cut off the opening and closing mechanism part of the circuit breaker, that is, the trip part and the opening and closing part to be mechanically separated into three parts mechanically, while releasing the above-mentioned section 4 3 3 A circuit breaker is provided.

Another object of the present invention is to provide a four-section three-display wiring circuit breaker having a modular opening and closing mechanism that can display three displays reliably by enabling on / off and trip operation.

Referring to the accompanying drawings in order to understand the above object and other objects and features of the present invention will be described in detail a preferred embodiment of the present invention in detail.

First, referring to FIG. 4 to explain the overall structure of Section 4-3 display circuit breaker of the present invention, a trip state of the circuit breaker of the present invention is also shown. Here, the circuit breaker of the present invention can be seen that the opening and closing mechanism A, the tripping portion T and the opening and closing portion S is configured independently in the case C.

The trip part T consists of a trip coil T _c and a trip operator T _a supported by a spring T _s operated by an electromagnetic principle by the trip coil and supported on the support plate W.

The opening and closing part S is composed of the fixed contactor S ₁ and the movable contactor S ₂ , and is supported by the lower part of the case C.

Switch mechanism A is a modular structure that can be displayed on / off and trip 3 as a four-section link structure. Referring to FIG. 1 to explain this in detail, where F is in the direction of arrow D. As a symmetrical frame of the type, the frame F has an opening (1) in the upper center, a stopper (2) in the lower left side, a support (3) in the upper right portion, and a protrusion (4) in the upper portion, and also the lower left and right symmetry It has each part 5 and the 1st, 2nd and 3rd guide grooves 6, 7, and 8. In the opening 1 in the frame F, a switch lever 9 is rotatably installed by the fixing pin 10 on the protrusion 4 and protrudes upward, and a lower end of the switch lever 9 is a spring. (20, FIG. 2) is connected to the upper portion of the elongated first link 11 and the first pin 12 to be rotatable in the first guide groove (6), the first The lower end of the link 11 is connected by the ladle-shaped second link 13 and the second pin 14 so as to be rotatable in the second guide groove 7.

In addition, the clasp 17 is rotatably supported by the fixing pin 15 under the support 3. At the upper end of the clasp 17, a third pin 16 supported by a spring 18 on the support 3 penetrates into the third guide groove 8, thereby guiding the rotation of the clasp 17. The transverse 21 is provided in the lower part of the part 17.

Referring to the operation of the modular display section 4, section 3 configured as described above is as follows.

First, the section 4 refers to the switch operation being bent in four places by being constituted by the section 4 link. When this is described in more detail with reference to FIG. 2, the first section refers to the operation of the switch lever 9. The upper end of the first link 11 coupled by the first pin 12 refers to bending rotation in the first guide groove 6, and the second section is referred to as the upper end of the first link 11 bending. Accordingly, the lower end of the first link 11 refers to bending rotation in the second guide groove 7, and the third section is coupled by the second pin 14 as the lower end of the first link 11 is bent and rotated. The second link 13 is bent rotation in the second guide groove (7) and the fourth section according to the bending rotation of the second link 13 has a latch portion (Rotally supported by the third pin ( 17) refers to the bending rotation in the third guide groove (8).

In addition, the 3 display means that the switch lever is located in the off state, the on state and the trip state by the above-described four-section link rotation.

First, referring to FIG. 2 to describe the off state, the switch lever 9 is switched to the right side, wherein the upper portion of the first link 11 moves upward along the first guide groove 6. Accordingly, since the lower portion of the first link 11 also moves upward along the second guide groove 7, the second link 13 coupled together by the second pin 14 also moves upward together. .

At this time, since the stopper 2, which is the left end of the second link 13, is stopped, only the right end continues to move upward, so as to be caught under the transverse 21 at the bottom of the clasp 17 as shown in FIG. At this time, since the upward force is applied to the transverse 21, the vector direction of the force acts as V, so that the lower portion of the latch portion 17 moves in the V direction on the fixing pin 15, which is the central axis, so that the second link 13 The right end of the) rises above the transverse 21 and immediately the clasp 17 is returned to its original position by the spring 18.

At this time, the left end of the second link 13 is in a state separated from the movable contactor S ₂ because the right end is caught on the upper side of the transverse 21 of the clasp 17. At this time, since the movable contact S ₂ is raised by the spring 22, it is electrically separated from the fixed contact S ₁ . Here, reference numeral 19 denotes a portion protruding into the frame F to prevent the inner movement of the clasp 17.

In addition, referring to FIG. 3 to explain the on state, this is a state in which the switch lever 9 is switched to the left side, wherein the upper portion of the first link 11 is lowered to the lower end of the first guide groove 6. It moves and maintains it by the spring 20.

Accordingly, the second link 13 is also moved downward to the lower side. Since the right end is supported on the transverse 21, the left end presses the insulation spacer 23 of the movable contact S ₂ , and thus the fixed contact S ₁ and The state of being in electrical contact is maintained.

Referring to FIG. 4 to explain the trip state, if an overcurrent flows in the on state as in FIG. 3, a current flows in the trip coil T _{c in the} trip part T, so that the trip occurs according to the electromagnet principle. Since one end of the operator T ₉ moves downward in the direction of the arrow, the other end moves in the direction of the arrow, so the third pin 16 is pushed inward so that the clasp 17 is moved by the fixed shaft 15 to the third guide groove ( 8) Since the right end of the second link 13 is moved downward by the spring 20 because it moves in the direction of the arrow, the movable contact (S ₂ ) is separated from the fixed contact (S ₁ ) and tripped. The switch lever 9 is switched to neutral.

Referring to FIG. 5 and FIG. 6 to explain the state of resetting the tripped state of FIG. 4, FIG. 5 is a state diagram immediately before the reset, and FIG. When the switch lever 9 of FIG. 5 to FIG. 4 is rotated to the right, the first link 11 is raised, and when the second link 13 is also raised, the left end of the second link 13 is While stopped by the stopper 2, the right end is also caught by the lower portion of the transverse 21. At this time, if the switch lever 9 is continuously turned to the right, the right end pushes the transverse 21 in the vector direction V of the hem, so that the latch portion 17 rotates in the V direction as described above, so that the transverse ( 21) Since the ascend up to the bottom of the fixed shaft 15, the switch lever 9 is no longer rotated. This is when the first and second pins 10 and 14 are located at the uppermost points of the first and second guide grooves 6 and 7 as the reset state is completed.

As described above, since the opening and closing part S and the tripping part T can be mechanically configured by modularizing the opening / closing mechanism A of the present invention, not only the assembly man-hours are reduced during manufacturing, but especially the entire circuit breaker is disassembled at the time of troubleshooting. Only repairable parts can be easily disassembled by parts, and parts can be replaced, and the on / off trip 3 display can be assured, and the electrical stability is improved.

Claims (1)

In the case C, the opening and closing part S and the tripping part T are configured to be mechanically separated from the modular opening and closing mechanism A, wherein the modular opening and closing mechanism A is The switch lever 9, the elongated first link 11, the ladle-shaped second link 13, and the clasp 17 are formed in the left and right symmetrical frame F, and the frame F is an open portion ( 1), stopper (2), support (3) and projections (4), and symmetrical first, second and third guide grooves (6, 7, 8) and corners (5), switch lever (9) Is supported on the protrusion 4 by the fixing pin 10 in the opening 1 and its lower part is spring 20 by the first pin 12 to be pivoted in the first guide groove 6. Is connected to the upper part of the first link 11 supported by the second link 11, and the lower part of the first link 11 is connected to the second link 3 by the second pin 14 to be rotated in the second guide groove 7. ), The clasp 17 is supported by the fixing pin 15, and also transversely so as to be rotated in the third guide groove 8 by the second link 13 and the tripping portion T. Section 4 characterized by having a 21 and a third pin 16 supported by a spring 18 on the support 3. When molded case circuit breaker.