JPH052980A - Circuit breaker - Google Patents

Abstract

PURPOSE:To reduce the degree of being influenced by dispersion in the operation of an open/close mechanism and stabilize the operation of an aux. switch by arranging the aux. switch so that its open and close direction is perpendicular to the sliding direction of a slide bar, which is driven by the open/close mechanism. CONSTITUTION:A slide bar 8 is installed in the part with a rear cover 13, which is put over the rear opening of a circuit breaker and is slided against the action of a spring 80 by a projection formed on a cross-bar. A protruding part at one end presses an aux. switch 81 in the direction perpendicular to the sliding direction, and open or close is generated. Because the sliding direction of the slide bar 8 (direction in which the cross-bar rotates) is perpendicular to the switch 81 driving direction, the aux. switch 81 can be secured with stable operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker, and more particularly to a circuit breaker having an auxiliary switch for external output.

[0002]

2. Description of the Related Art Conventionally, various circuit breakers having an auxiliary switch have been provided, but a conventional auxiliary switch is arranged near the breaking opening / closing mechanism and uses the movement of the breaking opening / closing mechanism as it is. It was supposed to be opened and closed.

[0003]

For this reason, it is difficult to obtain a stable operation because it is easily affected by the variation in the operation of the shutoff opening / closing mechanism. The present invention has been made in view of the above circumstances, and an object thereof is to provide a circuit breaker in which the operation of the auxiliary switch is stable.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, there is provided a slide bar which is slidably driven by a shutoff opening / closing mechanism,
It is characterized in that it is provided with an auxiliary switch that is opened and closed by sliding the slide bar, and that the sliding direction of the slide bar and the opening and closing direction of the auxiliary switch are orthogonal to each other.

According to the present invention, since the opening / closing direction of the auxiliary switch is orthogonal to the sliding direction of the slide bar driven by the breaking / opening mechanism, it is unlikely to be affected by the operation variation of the breaking / opening mechanism.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the illustrated embodiment. This is a circuit breaker for opening and closing three poles by a single breaking and opening / closing mechanism 3. As shown in FIG.
1, a front cover 12 that covers the front opening of the body 11, and a back cover 1 that covers the rear opening of the body 11.
3 and 3 form a body, and two parallel partition walls 14, 14 are formed in the body 11 to secure a mounting space for three poles. However, the partition walls 14 and 14 here are divided not by traversing the body 11 but by forming a notch 28 in the middle thereof.

A terminal 16 having a fixed contact 20 is attached to one end of the body 11, and a terminal 17 is attached to the other end. At this terminal 17, as shown in FIG.
Movable contacts 40 each having a movable contact are connected to each other via the electromagnetic trip element 5. Each movable contact 40 is attached to the crossbar 4 which is rotatably supported by the portion of the groove 19 formed in the partition wall 14. In FIG. 4, reference numeral 41 is a shaft on which the movable contact 40 is attached to the crossbar 4, and 42 is a contact pressure spring for urging the movable contact 40. The shut-off opening / closing mechanism 3 including the handle 30 supports the frame between the partition wall 14 and the front cover 12, and rotates the crossbar 4 during operation. The movable contact 40 simultaneously opens and closes the connection with the fixed contact 20.

Here, the electromagnetic trip element 5 and the movable contact 40
The wiring connecting between and is passed through the zero-phase current transformer 6, and the notch 28 is formed in the partition wall 14 for this wiring. The notch 28 is reinforced by fitting the pedestal 15 after the shutoff opening / closing mechanism 3 is assembled. Further, the zero-phase current transformer 6 is arranged in the portion of the body 11 on the back cover 13 side, and the substrate 60 on which the circuit for amplifying the output of the zero-phase current transformer 6 is mounted is shown in FIG. As shown, it is housed in a storage chamber 22 formed between the bottom surface of the body 11 and the back cover 13. The storage chamber 22 is separated from the contact portion by the bottom wall 23 formed on the body 11.
The arc generated at the contact portion is prevented from going around the storage chamber 22. Particularly, on the back surface of the back cover 13, a groove 18 for mounting the circuit breaker on the DIN rail is provided.
Since the passage to the storage chamber 22 is narrowed due to the formation of the above, the arc is more difficult to reach the storage chamber 22.

The slide bar 8 arranged on the back cover 13 has a drive projection 45 formed on the cross bar 4.
By being driven to slide against the spring 80 by
As shown in FIG. 1, the protrusion of one end pushes the auxiliary switch 81 in a direction orthogonal to the sliding direction to open and close the auxiliary switch 81. Since the sliding direction of the slide bar 8 (rotational direction of the crossbar 4) and the driving direction of the auxiliary switch 81 are orthogonal to each other, stable operation of the auxiliary switch 81 can be obtained.

This circuit breaker is used when the electromagnetic trip element 5 operates to attract the amateur 50, and when the zero-phase current transformer 6 is used.
When the solenoid 65 that operates with the output of, or the solenoid 65 operates by pressing the test button 66,
The operation rod 31 provided in the shutoff opening / closing mechanism 3 is rotationally driven by these, and as a result, a tripping operation is performed by which the crossbar 4 is rotated by the shutoff opening / closing mechanism 3.

In the embodiment shown in FIG. 8, the spring 80 for urging the slide bar 8 in the direction opposite to the direction in which the slide bar 8 is driven by the shut-off opening / closing mechanism 3 is set to the slide direction of the slide bar 8. Arranged in a crossing direction to urge the slide bar 8 in the direction opposite to the auxiliary switch 8 and to improve the vibration resistance by pressing the slide bar 8 against the wall surface of the back cover 13. Is.

[0012]

As described above, according to the present invention, since the opening / closing direction of the auxiliary switch is orthogonal to the sliding direction of the slide bar driven by the breaking opening / closing mechanism, the auxiliary switch causes the variation in operation of the breaking opening / closing mechanism. Less affected,
It is a stable operation.

[Brief description of drawings]

1A and 1B are partial front views showing the movement of a slide bar.

FIG. 2 is an exploded perspective view of a container.

FIG. 3 is a perspective view of a shutoff opening / closing mechanism.

FIG. 4 is a vertical sectional view.

FIG. 5 is a front view with a front cover removed.

FIG. 6 is a vertical sectional view.

FIG. 7 is a vertical sectional view.

FIG. 8 is a partial front view of another embodiment.

[Explanation of symbols]

8 slide bar 81 Auxiliary switch

Claims (2)

[Claims] 1. A slide bar that is slidably driven by a shutoff opening / closing mechanism, and an auxiliary switch that is opened and closed by sliding the slide bar, and a direction in which a sliding direction of the slide bar and an opening and closing direction of the auxiliary switch are orthogonal to each other. Circuit breaker characterized by being. 2. The circuit breaker according to claim 1, wherein the slide bar is spring-biased in both a sliding direction and a direction opposite to the auxiliary switch by a spring arranged to intersect with the sliding direction of the cut-off opening / closing mechanism. .