JPS625528A - Breaker for remote controlling circuit - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device configured to remotely control a circuit breaker χ for preventing overcurrent or overvoltage of a load.

[Conventional technology and problems]

A circuit breaker configured so that it can be tripped by overcurrent and/or overvoltage and can be turned on and off manually is known, for example, from Utility Model Application No. 52-
It is publicly known from Publication No. 8169 and the like. There is no problem if this type of circuit breaker is installed in an easy-to-operate location, but if it is located in a remote location or in a location that is difficult to operate, it will cause the contacts to turn on when it trips. It is difficult to get back to work.

[Means for solving problems]

The present invention for solving the above-mentioned problems includes a contact for opening and closing a circuit, and an operating lever that takes the on position for turning on the contact and the off position for turning off the contact. A circuit breaker comprising a switching mechanism that opens and closes a contact, a device that turns off the switching mechanism so that the contact is turned off in response to a current or voltage above a certain level, and a circuit breaker that switches the contact from the off state to the on state. a motor that is driven when returning the page; a rotating body that is driven by the motor; and a rotating body that is connected to the operating lever so as to rotate together with the operating lever, and that engages with the rotating body to heat the operating lever. and a retaining piece formed to return the operating lever to the on position, and the rotating body and the engaging member are arranged so that the rotating body does not prevent the operation lever from moving from the off position to the off position. The present invention relates to a remotely operated circuit breaker characterized in that a connecting piece is associated with the remote control circuit breaker.

0 action] In the above invention, the °C1 circuit breaker turns off in response to overcurrent and/or overvoltage. When this circuit breaker returns from an off state to an on state.

Motor '4r: Drive. This causes the p1 rotating body to rotate.

The engagement piece is displaced. Since the engaging piece is connected to the operating lever, the operating lever returns to the on position based on the displacement of the engaging piece. Since the cam is configured so as not to restrict the engaging piece and the operating lever from being in the OFF position, it is possible to open the contacts due to overcurrent and/or :1I411 pressure.

〔Example〕

Next, a remote control circuit breaker according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6.

The remote control circuit breaker shown in Figures IIE1 to M3 is as follows.

An electromagnetic circuit breaker generally called a circuit grotector or breaker, an AC or DC motor for remote control (2), a rotating body (3) rotated by the motor, and a rotating body with a cam function ( An engaging piece (4) that selectively engages with
) and a microswitch (5).

The circuit breaker il+ has a handle or operating lever (7) for turning on and off the contacts contained in the container (6).
Z, and Vcs is configured so that it can be turned off not only by an electromagnetic trip but also manually. Operation lever (7
) is fixed to a shaft (8), and the shaft (8) is rotatably supported by a bearing provided on the container (6). This axis (8
) protrudes from the container (6), and the engagement piece (4) is attached to this protrusion.
is fixed. Therefore, the operating lever (7) and the engagement piece (4) are displaced together.

The rotating body (3) is a rotating plate (
9), two bins aQ planted on the same circumference at 180 degree intervals on this rotating plate (9), and a pair of recesses αυ provided on the outer periphery of the rotating plate (9) at 180 degree intervals. and has.

As is clear from Fig. 4, the bottle Ql is a protrusion provided on the rotary plate (9J), and selectively contacts the engagement piece (4) and turns the engagement piece (4) and the operating lever (the sword into the on position). return.

This pin αQ is formed so as not to prevent the engagement piece (4) and the operating lever from moving from the on position to the off position.The concave part αυ of the rotary plate (9) is equipped with a micro switch (5). The actuation piece (121) selectively enters. Therefore, the microswitch (5) is turned on or off depending on the angular position of the rotary plate (9).

FIG. 5 shows the electrical circuit of the first prisoner's device. circuit breaker (
1) includes a switch consisting of a fixed contact α3 and a movable contact I, and is possible! B contact (141 is the first prisoner's operating lever (7)
It is turned on and off by the overcurrent trilag coil aS.
and voltage trip coil (turned off at 161).

The fixed contact AQ31 is connected to the first terminal aη of the circuit breaker, and the movable contact α is connected to the second terminal Q81VC of the circuit breaker via the overcurrent trip coil U. One voltage trip coil is connected to the movable contact α and the third circuit breaker.
It is connected between the terminal a9 and the terminal a9.

The first and second terminals αηα of the circuit breaker (17) are connected to the source line 4 of one of the AC or DC load circuits to be protected (131a4 and the current trip coil a9 is connected in series). The line is connected to the gloss.

The third terminal a3 is connected to the other one of the load circuits via a manual trip switch. The motor (2) is connected between one Ill line ■ and the other t source QD via an on-return operation switch (231 pieces).The micro switch (5) is connected in parallel to the on-return operation switch. When the operating piece az of the microswitch (5) enters the recess (IIJ) of the cam (3), the microswitch (5) is kept off, but the rotation of the motor (2) causes the rotating plate to When (9) rotates and the actuating piece U comes out from the recess αD, the rotating plate (9)
The actuating piece α is pressed and the microswitch (5) is turned on. Therefore, the push button type ON return operation switch c! with a normally open contact configuration! 3χ When the ON operation is performed and the motor (2) rotates, the microswitch (5) will be in the ON state and V,
When the on-return operation switch is turned on, the temo motor (2) continues to rotate. However, when the actuating piece (12) enters the recess aυ again, the microswitch (5) turns off, and the rotation of the motor (2) also stops.

(Explanation of FIG. 6) The circuit breaker (1) has a fixed contact a3 and a movable contact I disposed in a container (6) as shown in FIG. 6, and has an opening/closing mechanism for opening and closing the movable contact I. (241" is provided, and an electromagnetic trip mechanism (251"r is provided) including an overcurrent trip coil a9 and a voltage trip coil σ.

Opening/closing machine a (241 is an operation lever (241) fixed to the shaft (8)
7) and a toggle switch mechanism that opens and closes the movable contact α41 in response to this. This circuit breaker (1 is 1, for example,
Since it is substantially the same as that disclosed in Publication No. 69, etc., detailed explanation will be omitted.

(motion〕 Next, the operation and operating method of this device will be explained.

In the ON state where the movable contact I and the fixed contact (131) are in contact, if a current of a certain value or more flows through the overcurrent trip coil (151), the movable contact I becomes OFF state and the control lever (7) is turned off. Move to off position.

In this off state, when returning to the on state by remote control, the on return operation switch Q3 is turned on. Since this switch has a normally open contact configuration.

Returns to off when the operation is canceled. When the motor (2) rotates by turning on the switch, the operating piece (121) of the microswitch (5) comes out of the recess αυ and is pressed by the rotating plate (91), turning the microswitch (5) on. Therefore, the rotation of the motor (2) is maintained. When the rotating plate (9) rotates clockwise as shown in FIG.
contacts the engaging piece (4) as shown in FIG. 3, and the engaging piece (4) is rotated counterclockwise by the pin αQ. As a result, the operating lever (7) also rotates counterclockwise,
It returns to the on position shown by the chain line in FIG. The rotary plate (9) continues to rotate even after the operating lever (force and engagement piece (4)) is returned to the on position, but the actuating piece σ enters the recess συ and the micro switch (5) returns to the off position. Therefore, the rotation of the motor (2) stops.Therefore, the one-turn plate (91) stops at a predetermined angular position.At this stop position, the engagement piece (4) cannot move to the OFF position. Ql does not block, thus allowing tripping of the single circuit breaker (1).

When a circuit breaker (1) is turned off by remote control, the switch is turned on.

As a result, 1! Current flows near the pressure trip filter α.

goes off.

(Modified example) The invention is not limited to the embodiments described above.

It is deformable. For example, as shown in FIG. 7, one rotating body (3) may be provided with one bin α0 and one recess αD in the rotating plate (9). I got it. As shown in FIG. 8, a convex portion (lia) Y may be provided on the rotary plate (9) so that the microswitch (5) Z is turned off. Also, instead of the micro switch (5), a single rotation body (
3) A photoelectric switch or a magnetic response switch that turns on or off at a predetermined angular position may be provided. It was a cabinet. Instead of the bottle QCJ, a concavo-convex surface on which a corresponding cam surface is formed may be provided. Further, the configuration may be such that the switch @ and the voltage trip coil u61 are omitted.

〔Effect of the invention〕

As is clear from the above, according to the present invention, remote control can be easily performed with a simple configuration.

[Brief explanation of drawings]

FIG. 1 is a front view showing a remote control circuit breaker Z according to an embodiment of the present invention. Figure 2 is a partially cutaway left side view of the device shown in Figure 1. FIG. 3 is a left side view showing a state in which the rotating body in FIG. 2 is displaced. Fig. 4 is a perspective view of the rotating body, Fig. 5 is a circuit diagram of the device shown in Fig. 1, and Fig. 6 is a partially cutaway right side view showing the circuit breaker of the device shown in Fig. 1. 7 and 8 are front views showing modified examples of the cam. (1)...Circuit breaker, (2)...Motor, (3)
...Rotating body, (4)...Engagement piece, (5)...Micro switch, (Sword...Operation Reno Kuichi 1a1...Axis, (91...Rotating plate, aω... - Bottle, alpha sword... recess. I... movable contact. Agent Norihiro Takano Figure 5 Figure 7 Figure 8

Claims (1)

[Claims] (1) a contact for opening and closing a circuit; an opening/closing mechanism for opening and closing the contact, including an operating lever that takes an on position for turning on the contact and an off position for turning off the contact; a circuit breaker comprising: a device that turns off the opening/closing mechanism so as to turn the contact off in response to a current or voltage of the circuit breaker; a rotating body driven by the motor; and a lock connected to the operating lever so as to rotate together with the operating lever and engaged with the rotating body to return the operating lever to the on position. a mating piece, and the rotating body and the engaging piece are related to each other such that the rotating body does not prevent the operating lever from moving from the on position to the off position. Features: Remote control circuit breaker.