KR800001825Y1 - Separation device of electric leakage circuit breaker - Google Patents

Abstract

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Description

Separator of earth leakage breaker

1 is a plan view of the main part of the disconnecting device of an earth leakage breaker according to the present invention;

2 and 3 are side views, respectively, in different states of FIG.

Figure 4 is a perspective view of the main portion of the separation device according to the present invention.

5 is a plan view of an earth leakage breaker having a separator according to the present invention.

6 is a configuration diagram of a disconnecting device of an earth leakage breaker.

The present invention relates to a separator of an earth leakage breaker.

In the earth leakage breaker, it is preferable to include an operation display device for displaying the operation. By attaching this operation device, it is desired that the structure of the ground fault breaker is not complicated, and that the whole ground fault breaker is not large. In addition, in recent years, the earth leakage breaker has a combination of an overload protection function and a short circuit protection function in addition to the earth leakage protection function. It is required to be able to observe from outside and determine whether this has been detected and operated.

Thus, the present invention satisfies the above requirements.

In order to achieve this object, the present invention, in the circuit breaker of the circuit breaker circuit breaker in the circuit breaker for disconnecting the path by transmitting the operation of the circuit breaker is operated when the current leakage occurs in the converter to the opening and closing mechanism, An operating lever attached to the release lever, the release lever pressed by the operating lever, a spring for applying a force to the release lever, a half-moon-shaped protrusion made on the rotation shaft of the release lever, the ruled hanging on the half-moon-shaped protrusion A substantially N-shaped drive lever having an end acting on an electromagnet for operating the opening and closing mechanism with a contact portion in contact with a branch and a half-moon-shaped protrusion, an axis supporting the rotation of the drive lever, the drive lever being made on the axis And a display button made on the spring and a driving lever.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

First, referring to Figure 5, the overall configuration of the earth leakage breaker with a separation device according to the present invention will be briefly described.

As shown in FIG. 5, the earth leakage breaker in this example includes a case 21, an opening / closing mechanism 22 made therein, a video current transformer 23 for detecting a short circuit, and a video current transformer. An earth leakage isolating element 24 connected to the secondary winding of (23) and mechanically converting the secondary output of the image current transformer 23, a separator 25 which is operated by the operation of the isolating element 24, and isolating. The electromagnet 26 which operates the opening / closing mechanism 22 by operation of the device 25 is a main component, and the component group 27 such as a capacitor, a resistor, a power supply terminal 28 and a load side terminal ( 29). In addition, a cover is covered on the case 21. Among the main components described above, the separating element 24 will be described, which has an internal configuration as shown, for example, in FIG.

That is, in FIG. 6, reference numeral 31 denotes a movable iron support part, 32 denotes a rotating shaft, 33 denotes a movable iron piece, 34 denotes a yoke, and 35 denotes a potato winding. Are permanent magnets and are housed in a case 37 as shown in FIG. Next, the separating device 25 will be described. Specifically, as shown in FIGS. 1 to 4, the separating device 25 is attached to the rotational shaft 32 outside the case of the ground fault separating element 24 and simultaneously with this. A spring 2 and an electromagnet device 26 for adjusting the suction force between the yoke 34 of the earth leakage separating element 24 and the movable iron piece 33 and generating a release energy. A driving lever 6 for operating the shaft, a shaft 13 for supporting the rotation of the lever 6, a driving spring 9 made on the biaxial shaft 13, a half moon-shaped protrusion 5a, and a driving lever 6 The display button 8 connected by the pivot shaft 5 interlocking with the hanging portion 6a, the release lever 4 integrally coupled with the pivot shaft 5, and the pin 12 of the driving lever 6; And a support portion 11 which holds them integrally, and the upper surface of the display button 8 is slightly exposed to the outer surface of the cover 10 of the earth leakage breaker case.

On the other hand, in the absence of a short circuit in the boundary path, the movable iron piece 33 of the ground fault separating element 24 is pressed by the force of the spring 2 and is attracted to the yoke 34 by the magnetic force of the permanent magnet 36. have. At this time, the operating lever 3 is in the position shown in FIG. 2 and does not interfere with the driving lever 6. As for the drive lever 6, the hanging part 6a engages with the half-moon-shaped protrusion part 5a of the rotation shaft 5, and the position is restrained. Thus, the end 6b of the drive lever 6 does not interfere with the armature 41 of the electromagnet device 26.

Now, when a short circuit occurs, a secondary output is generated in the image current transformer 23, which is applied to the potato coil 35 of the ground fault separating element 24. As a result, since the magnetic force from the permanent magnet 36 is attenuated, the movable iron piece 33 is released by the force of the spring 2, and the movable iron piece support portion 31 supports the pivot shaft 32. Rotate with it. In response to this, the operating lever 3 rotates and presses the tip of the release lever 4, so that the rotating shaft 5 coupled thereto is also rotated, and engages with the half moon-shaped protrusion 5a of the rotating shaft 5. By the force of the spring 9, the drive lever 6, which has been positioned, is rotated from the position indicated by the dashed line in FIG. 3 to the position indicated by the solid line by the force of the spring 9. As a result, the armature 41 of the electromagnet device 26 beats the head 41a, defeats the force of the return spring 42 and moves toward the iron core 43.

At this time, the movement of each part 41b of the amateur 41 is transmitted to the opening / closing mechanism 22 of the next step, and interrupts conduction. The ground fault interrupting operation display button 8 protrudes on the outer surface of the cover 10 when the driving lever 6 is rotated, thereby indicating that the ground fault interrupter has been operated by the ground fault. When the converter is blocked, the operating lever 3 automatically returns to the position shown in FIG. 2 by the operation of the reset rod not shown in the drawing provided between the opening and closing mechanism 22 and the operating lever 3. . At this time, the release lever 4 follows the movement of the operating lever 3 by the force of the tightening spring 7 to which the force is applied clockwise. When the cause of the short circuit is removed and the opening / closing mechanism 22 is turned on again, the display button 8 is pushed down by hand. Thereby, the contact part 6c of the drive lever 6 descends while contacting the half-moon-shaped protrusion part 5a of the rotational shaft 5, and the hanging part 6a and the half moon by the force of the said tightening spring 7 mentioned above. The protruding portions 5a engage with each other, and the drive lever 6 returns to the position in FIG. This makes it possible to reinsert the opening / closing mechanism 22.

In the above example, the ground fault operation display button is simply attached to the drive lever 6 of the separation device, and does not complicate the configuration of the separation device. In addition, since the disconnect button is provided with a display button, the earth leakage breaker does not increase in size, unlike the earth leakage operation display device provided separately from the disconnect device. In addition, since the display button is provided in the separating device which operates based on the occurrence of the short circuit of the boundary converter, the short circuit breaker detects the short circuit and operates clearly. This advantage is particularly important when the earth leakage breaker has both an overload protection function and a short circuit protection function.

Also in the example shown in the figure, when the armature 41 of the electromagnet device 26 is attracted to the iron core 43 by overcurrent, the display button 8 is not exposed from the cover 10.

In addition, although the above-mentioned example demonstrates what is called an electronic leakage circuit breaker, it cannot be overemphasized that this invention is not limited to this, but it can be applied also to other types of earth leakage circuit breakers (for example, a semiconductor earth leakage circuit breaker). .

Claims (1)

In the separation device of the earth leakage breaker for transmitting the operation of the earth leakage separation element 24 which is operated when the earth leakage occurs in the converter to shut off the converter 22, the rotation shaft ( 32, the operation lever 3 attached to the release lever, the release lever 4 pressed by the operation lever 3, the vandal-shaped protrusion 5a provided on the rotation shaft 5 of the release lever, And the end portion 66 acting on the electromagnet for operating the opening and closing mechanism 22 and the contact portion 6c contacted with the half moon protrusion 5a and the contact portion 6c on the half moon protrusion 5a. A substantially N-shaped drive lever 6, a shaft 13 for supporting the rotation of the drive lever 6, a spring 9 for applying a force to the drive lever 6 provided on the shaft 13, And a display button (8) installed on the driving lever (6).