KR101026314B1 - Position detecting apparatus for circuit breaker - Google Patents

Abstract

The present invention provides a circuit breaker position detection device for detecting the current position of the disconnected position (disconnected position), the test position (test position) and the connected position (connected position) of the breaker body in the breaker; In order to provide, according to the invention a spindle (spindle) for the inlet or pull-out drive of the breaker body, movable back and forth along the spindle, the movable plate having a rack gear portion on the surface, the front and rearward movement of the movable plate A pinion gear rotatable according to the rotation, a gear support shaft rotatable according to the rotation of the pinion gear, a switch drive plate rotatable together with the rotation of the pinion gear, and a rotational force of the rotating switch drive plate provided by switching the switch opening and closing driving force. The switch actuator and the switch actuator to be subjected to mechanical actuation force Disclosed is a circuit breaker position detection device having an operating lever located within a movement trajectory of a sphere, and including a micro switch which emits an electrical signal indicating the position of the circuit breaker.

Breaker, position detector

Description

POSITION DETECTING APPARATUS FOR CIRCUIT BREAKER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker, and more particularly, to a position detection device for detecting a position of a breaker body in a breaker body, a test position, and a drawout position.

The drawer type breaker which can separate the main body of the cradle and the circuit breaker connecting the power and load side circuits is a main circuit breaker that cuts the high voltage line from several kilo volts to several hundred kilo volts. This is a low voltage circuit breaker that is widely used as a vacuum circuit breaker that is widely used and a parking circuit that cuts low voltage lines of several hundred volts or less at the back of the transformer. Can be mentioned.

In contrast to fixed circuit breakers, these draw-out circuit breakers are often used for convenience in testing and maintenance. Such a drawer type breaker includes: a breaker main body including a control unit and a terminal unit represented by an open / close mechanism for largely opening and closing a circuit and an overcurrent relay; It can be connected to the external power and load side, and according to the disconnected position (connected position), test position, or withdrawal position (disconnected position) of the breaker body, A cradle supporting the breaker body with a terminal portion connectable or detachable; It is installed in the cradle is configured to include a draw-out device for driving the drawer body or drawout.

The present invention relates to a position detection device of a breaker for detecting which position of the breaker body is located in the retracted position, the test position or the withdrawal position relative to the cradle in the breaker.

SUMMARY OF THE INVENTION An object of the present invention is to provide a circuit breaker position detection apparatus capable of detecting a simple structure and a low manufacturing cost at which a breaker body is located at an inlet position, a test position or an outlet position relative to a cradle in a breaker. will be.

The object of the present invention, in the position detection device of the circuit breaker,

A switch driving plate connected to a drawer of the breaker and rotatable interlocked and having a guide hole;

A moving plate inserted into and connected to the guide slot of the switch driving plate, the movable plate being horizontally movable in accordance with the rotation of the switch driving plate and having a switch operating portion;

A support mechanism for guiding the horizontal movement of the movable plate; And

An actuating lever portion contactable to the switch actuating portion of the movable plate, and detecting a position including the inlet position and the ejecting position of the circuit breaker according to the horizontal shifting position of the switch actuating portion of the movable plate to obtain an electrical signal according to the detected position; It can be achieved by providing a position detection device of the circuit breaker according to the present invention comprising a micro switch to provide.

The object of the present invention, in the position detection device of the circuit breaker,

A spindle that is manually rotatable and that drives the drawer's main body in or out;

A movable plate screwed with the spindle and movable in the front-rear direction along the rotating spindle, the movable plate having a rack gear portion on a surface thereof;

A pinion gear screwed to the rack gear portion of the movable plate and rotatable according to the forward and backward movement of the movable plate;

A gear support shaft for supporting the pinion gear and being rotatable in accordance with the rotation of the pinion gear;

A switch drive plate axially supported by the gear support shaft and rotatable together with the rotation of the pinion gear;

A switch operating mechanism connected to the switch driving plate and horizontally movable to convert and provide a rotational force of the rotating switch driving plate into a switch opening and closing driving force;

It characterized in that it comprises a micro switch having an operating lever located within the movement trajectory of the switch operating mechanism in contact with the switch operating mechanism to receive a mechanical opening and closing force, and outputs an electrical signal indicating the position of the breaker. It can be achieved by providing a position detecting device of the circuit breaker according to the present invention.

The position detecting device of the breaker according to the present invention is a switch drive plate rotatable connected to a gear shaft included in the take-out device so as to interlock with the draw-out device of the breaker, and a switch movable horizontally in accordance with the rotation of the switch drive plate. It comprises an operating mechanism and a micro switch pressurized by the switch operating mechanism to emit an electrical signal indicating the position of the breaker main body, so that the position of the breaker main body can be accurately detected and provided as an electrical signal. .

The position detecting device of the breaker according to the present invention is a switch drive plate rotatable connected to a gear shaft included in the take-out device so as to interlock with the draw-out device of the breaker, and a switch movable horizontally in accordance with the rotation of the switch drive plate. It includes an actuator and a micro switch pressurized by the switch actuator to emit an electrical signal indicating the position of the circuit breaker, so that it can be simply configured, can be downsized, and can be manufactured at low cost. Can be obtained.

The position detecting device of the circuit breaker according to the present invention comprises a microswitch of a first row and a second row, each of which comprises a microswitch of at least one microswitch. Based on the change in the electrical output signal of the microswitch when the switch opens and closes and the microswitches in the first and second rows do not open and close, the breaker main body of the breaker is any of the inlet, test and outlet positions. The effect can be clearly detected.

The object of the present invention and the configuration and effect of the present invention to achieve the same will be more clearly understood by the following description of the preferred embodiment of the present invention with reference to the accompanying drawings.

In order to understand the configuration and the effect of the position detection device of the circuit breaker according to the present invention, it should be understood that an understanding of the position of the circuit breaker, the test position, the position of drawing and the device of drawing out the device to such a position should be preceded. Referring to 14, the position and displacement of the circuit breaker having the position detecting apparatus according to the present invention will be described first.

The breaker draw-out device is installed in a cradle which supports the breaker body of the breaker and provides a means for electrical connection with the external power supply side and the load side. Therefore, the configuration of the cradle will be described with reference to the accompanying drawings.

First, it will be described with reference to FIG. 2, which is a perspective view of only a cradle in which a drawer device of the air circuit breaker is installed obliquely from above while the breaker body is removed.

In Fig. 2, the cradle 10 is a terminal having a terminal electrically connected to the power supply and the load side, the terminal board 11 providing a means for electrical connection with the external power supply side and the load side from the rear, and the terminal. It is comprised including the draw-out apparatus arrange | positioned in front of the board | substrate 11 (the right part of the terminal board 11 in FIG. 2). In FIG. 2 one of both side plates of cradle 10 (see reference numeral 12 in FIG. 11, etc.) has been removed to show the internal construction.

The configuration of the terminal board 11 is briefly described with reference to FIG. 3, which is a perspective view showing in more detail the terminal portion for connecting the rear power supply and load side and the terminal base plate 11 supporting the terminal portion among the cradle of FIG. 2. Supplementary explanation.

The terminal substrate 11 may be formed by casting a synthetic resin material having excellent mechanical strength as an electrical insulating material, and as shown in FIG. 3, three sets of terminals are provided at the top and three sets of terminals at the bottom thereof. The upper three sets of terminals comprise three terminal portions for connection with a three-phase (R phase, S phase, T phase alternating three phase) line on the power supply side or the load side, and the lower three sets of terminal portions have three upper portions on the power supply side. When connected to the line, it is connected to the load side line, and when the upper three pairs are connected to the load side line, it consists of three terminal parts for connection with the three-phase line on the power side or load side that can be connected to the power side line. Each phase terminal portion may be configured by stacking a plurality of conductor plates. 3 shows only the main body connection side terminal portion T2 among the terminal portions.

A more detailed configuration of the terminal portion shown in FIG. 3 will be described with reference to FIG. 4, which is a plan view separately showing the configuration of only the terminal portion of FIG. 3.

As shown in FIG. 4, the terminal part may include an external connection side terminal part T1 and a main body connection side terminal part T2. The three-phase external connection side terminal portion T1 is kept in the state of long-term connection with an external power supply side or load side line, and thus is electrically integrated with an alphabet "T" type provided with connection holes for line connection and screw holes for fixing. Consists of a conductor (eg made of brass) busbar. The breaker body side terminal is also composed of the same "T" type electrically integrated conductor busbar. On the other hand, the main body connection side terminal portion T2 is a terminal portion connected to the circuit breaker main body side terminal portion (the external connection side terminal portion T1 can be referred to since it is configured in the same form as the external connection side terminal portion T1) and draws out of the circuit breaker main body. Since it is a part where connection and disconnection are made between terminals relatively frequently with movement, it consists of laminating | stacking the several conductor board which contact pressure is maintained by a leaf spring (unsigned).

On the other hand, with reference to Figures 5 to 6 and 11 to 14 will be described in detail the configuration of the draw-out device of the air circuit breaker. 11 to 14 of the accompanying drawings, in order to show the overall shape or connection relationship of some of the constituent parts, it is clear that parts that are not visible are also shown to be shown and overlapped.

5 is a perspective view showing the configuration of a take-out apparatus in the cradle of the breaker, FIG. 6 is a perspective view of the first rail plate separately showing the first rail plate in the cradle of the breaker, and FIGS. 11 to 14 are breakers In the operation state diagram showing the operation of the draw-out device in the.

The drawer of the air circuit breaker according to the present invention is largely divided to include a spindle 21 and a power transmission mechanism (22, 22a, 23, 24, 25, 26, 32b, 30).

The spindle 21 is rotatable either manually or electrically, providing a power source for driving the breaker body (see 60 in FIG. 8) of the air circuit breaker to the retracted or withdrawn position. That is, the spindle 21 can be rotated manually by connecting the handle H as shown in FIG. 10 (wherein the spindle 21 is not shown but is of polygonal shape such as a hexagon for connection with the handle H). The handle H (see reference numeral 21a in FIG. 1) and the handle H correspondingly have the same square connection grooves} can be electrically rotated by connecting an electric mechanism such as a motor (not shown). Further, the spindle 21 has a screw portion that provides a screw connection movement path formed on the outer circumferential surface thereof by a predetermined length so that the movable plate 22 described later can be screwed and moved.

According to the invention, the power transmission mechanisms 22, 22a, 23, 24, 25, 26, 32b, 30 are connected with the spindles 21 and the breaker body so that the spindle 21 moves to the retracted or withdrawn position. Power from the control unit is transmitted to the breaker body.

The power transmission mechanisms 22, 22a, 23, 24, 25, 26, 32b, and 30 are movable plate 22, first rack gear 22a, first pinion gear 23, gear support shaft 24, a second pinion gear 25, a draw gear 26, a first rail plate 30, and a roller 32b.

The movable plate 22 is screwed with the spindle 21 and is movable horizontally by the rotating spindle 21. As can be seen in FIG. 5, the movable plate 22 has a threaded hole (not shown) through which the spindle 21 penetrates and a female threaded threaded connection with the threaded portion of the spindle 21. . The movable plate 22 may be composed of a metal plate of the letter “L” in the form of a lying down. The movable plate 22 may be installed on the movable plate 22 on the lying down plate and move together according to the horizontal movement of the movable plate 22. The rack gear 22a is provided, and the said screw hole screwed with the spindle 21 is provided in the board part standing in the vertical direction.

A pair of first rack gears 22a is preferably formed on the lying plate portion of the movable plate 22 to extend in the longitudinal direction of the lying plate portion along portions adjacent to both side edges.

A pair is provided so that the first pinion gear 23 rotatable by the movement of the first rack gear 22a may correspond to the pair of first rack gears 22a so as to be geared to the first rack gear 22a. do. The pair of first pinion gears 23 is supported by the gear support shaft 24.

The gear support shaft 24 extends at right angles to the spindle 21 as can be seen in FIG. 5, and as shown in FIG. 5, the lower rail LR fixed to the bottom of both side plates 12. The second pinion gear 25 extends through the shaft passage allowable groove (not shown) of both ends. The gear support shaft 24 rotates together with the rotation of the pair of first pinion gears 23 to transmit rotational driving force to the draw gear 26 via the second pinion gear 25 which is coaxially connected. The second pinion gear 25 is provided with a pair and is provided at both end sides of the gear support shaft 24, respectively.

The draw gear 26 has the gear part 26a geared with the 2nd pinion gear 25, The 2nd pinion centering on the 1st hinge pin HP1 according to the rotation of the 2nd pinion gear 25. As shown in FIG. It is rotatable in a direction opposite to the rotational direction of the gear 25. Here, the first hinge pin HP1 is fixedly installed on the side plate of the cradle indicated by reference numeral 12 of FIG. 11. The draw gear 26 has a cam slot section 26b, which is connected to the roller 32b of the first rail plate (refer to reference numeral 30 in FIG. 6) through the cam groove section 26b, so that the roller A driving force for horizontally moving the first rail plate (see numeral 30 in FIG. 6) via 32b is provided. When the first rail plate 30 is horizontally moved, the main body connecting protrusion (31 in FIG. 6) of the first rail plate 30 is the rail connecting groove portion (see FIG. 8 in FIG. 8) of the breaker body (see FIG. 8). The breaker main body (refer to numeral 60 in Fig. 8) connected by being fitted to the numeral 60a can be driven to move horizontally. Here, the draw gear 26 has been named the draw gear in terms of the draw-out gear for drawing in or out of the breaker body (see reference numeral 60 in FIG. 8). As shown in FIG. 11, the draw gear 26 has a driving force between the gear part 26a connected to the second pinion gear 25 and the roller 32b of the first rail plate 30. The cam groove portion 26b capable of transmitting a position, and a position provided at an upper portion of the draw gear 26 and connected to a control connector driving lever 28 to be described later or separated from the control connector driving lever 28. And a lever connection protrusion 26c that is movable in accordance with the rotation of the draw gear 26 to a position to be made. As shown in FIGS. 5 and 11, one draw gear 26 is provided on each side plate 12, and each of the draw gears 26 is rotated on both side plates 12 by a first hinge pin HP1. Possibly supported.

In Fig. 6, the first rail plate 30 is fitted in the rail connecting groove portion (see 60a in Fig. 8) of the breaker main body (see 60 in Fig. 8) to be connected to transmit a driving force. It has a main body connection protrusion 31 which can be. The first rail plate 30 has a roller assembly at the center of the plate surface. The roller assembly supports a roller 32b, a supporting pin 32a rotatably supporting the roller 32b, and fixed to a plate surface of a central portion of the first rail plate 30, and a support pin ( It includes a rivet (32c) for fixing the support pin (32a) to the first rail plate 30 so that 32a is fixed to the first rail plate (30).

As shown in FIG. 7 and FIG. 8, the connection between the first rail plate 30 and the second rail plate 40 may include a first guide hole formed in the first rail plate 30 in a horizontal direction ( Unsigned) and a connection pin (unsigned) fitted into the first guide hole through the second rail plate 40. The second rail plate 40 is provided with a second guide hole corresponding to the first guide hole of the first rail plate 30 to guide the horizontal movement of the connecting pin. Since the connecting pin is inserted through both the second guide hole and the first guide hole, the first rail plate 30 and the second rail plate 40 may be connected to each other and guided to move in the horizontal direction. In addition, the first rail plate 30 and the second rail plate 40 may be driven horizontally by the connection pins. That is, the state shown in FIG. 9 is a state located in the left end part of the said 2nd guide hole of the 2nd rail board 40, In this state, the roller 32b is horizontally slid by the draw gear 26 of FIG. It is possible to move the first rail plate 30 to the left side by moving it to the left side, and the horizontal movement of the first rail plate 30 in FIG. 9 (retraction direction movement) is such that the connecting pin is connected to the first guide hole. It may continue until it is limited by the right end in the figure. This horizontal movement of the left side of the first rail plate 30 results in the movement of the breaker body to the connecting position as shown in FIGS. 13 and 14. In addition, the horizontal movement of the breaker body according to the horizontal movement of the first rail plate 30 is a rail connection in which the main body connection protrusion 31 provided on the upper portion of the first rail plate 30 is relatively provided in the breaker body. It becomes possible by being inserted in the groove part (refer 60a of FIG. 8), and being connected to drive. On the other hand, when the first rail plate 30 is horizontally moved (drawn out) in the right direction from the state shown in FIG. 7, the connecting pin is connected to the right end of the second guide hole of the second rail plate 40. The second rail plate 40 is further horizontally moved in the right direction as it is pressed while contacting, wherein the second rail plate 40 is respectively provided at the upper and lower portions of the side plate 12 as shown in FIG. 1. It is horizontally guided by a fixedly installed upper rail UR and lower rail LR. Although not shown, a rear side of FIG. 7 of the second rail plate 40 has a pair of guide shoes (not shown) horizontally extended to the upper and lower portions so as to be connected to the upper rail UR and the lower rail LR, respectively. Is prepared.

On the other hand, as can be seen in Figure 11, the air circuit breaker according to the present invention, according to the position of the circuit breaker main body (reference numeral 60 in Fig. 8), the control power supply and the automatic connection or disconnection of the control terminal for signal input and output The control terminal drive lever 28 connected to the draw gear 26 and the control connector drive lever 28 are connected to each other by a connecting pin, and the control terminal drive can move in accordance with the rotation of the control connector drive lever 28. It further includes a link 29. The control connector drive lever 28 is provided with a power connection long groove (refer to FIG. 14) in which the lever connection protrusion 26c of the draw gear 26 enters and is driven in and out of the draw gear 26 to stop the transmission of the driving force. . The control connector drive lever 28 is rotatably supported on the side plate 12 by the second hinge pin HP2, and the draw gear when the lever connection protrusion 26c of the draw gear 26 enters and is driven to drive. Rotation of 26 makes it possible to rotate in the same direction. The control terminal drive link 29 has a lower end connected to the control connector drive lever 28 by a connecting pin (unsigned), so that the side plate (according to the clockwise or counterclockwise rotation of the control connector drive lever 28). A pair of opposing guide members (not shown) fixedly installed at 12) is movable in a vertical direction to descend or ascend in accordance with the guidance of the guide members. A cradle side control terminal, that is, a cradle side control signal connector (not shown) is connected to the control terminal drive link 29, and the cradle side control terminal, that is, cradle according to the rising or falling of the control terminal drive link 29. The side control signal connector is also raised or lowered. The breaker main body of the air circuit breaker is provided with a control signal connector corresponding to the cradle side control terminal, that is, the cradle side control signal connector. The cradle side control signal connector and the breaker main body side control signal connector are composed of a plurality of connection pins relative to each other or connection pin holes relative to the connection pins, that is, the cradle side control terminal, that is, The breaker body side control signal connector is connected when the cradle side control signal connector descends and is disconnected from the breaker body side control signal connector when the cradle side control terminal is raised. According to the present invention, since the draw gear 26 rotates clockwise or counterclockwise according to the entry or withdrawal position of the breaker body, the cradle side control terminal, that is, the cradle side, according to the entry or withdrawal position of the breaker body. The control signal connector is also lowered or raised in conjunction with the cradle-side control terminal, that is, the cradle-side control signal connector and the breaker body-side control signal connector may be automatically connected or disconnected according to the entry or withdrawal position of the breaker body. .

On the other hand, the operation of the air circuit breaker and its withdrawal device according to the present invention configured as described above will be described with reference to the accompanying drawings.

First, an operation of installing the circuit breaker main body in the cradle will be described with reference to FIGS. 7 to 10.

First, as shown in FIG. 7, when both of the side plates 12 of the cradle 10 hold the handles (unsigned) provided at the front side of both first rail plates 30 with both hands, and are no longer drawn out. As shown in FIG. 7, both the pair of first rail plates 30 and the pair of second rail plates 40 are fully drawn out to the front of the air circuit breaker.

Next, as shown in FIG. 8, the main body connecting protrusions of the first rail plate 30, which may refer to FIG. 6, in the rail connecting groove portions 60a provided on both side surfaces of the breaker main body 60 ( By fitting 31), the circuit breaker main body 60 and the 1st rail plate 30 are connected and supported.

Next, as shown in FIG. 9, when the front surface of the breaker main body 60 is pushed by hand, the upper rail UR, the lower rail LR and the connecting pin as shown in FIG. Guided by the first guide hole of the rail plate 30 and the second guide hole of the second rail plate 40, together with the breaker body 60, both the first rail plate 30 and the second rail plate ( 40 is drawn to the rear of the cradle 10 in FIG. 9. 9 shows that the terminal portion of the circuit breaker body and the terminal portion of the cradle are separated from each other, and the cradle side control terminal and the breaker body side control terminal (control connector) described above with reference to FIG. Disconnected position.

Next, as shown in FIG. 10, the handle H is placed on the handle connector (see reference numeral 21a in FIG. 1) of the spindle (see reference numeral 21 in FIG. 5) provided at the lower front of the cradle 10. Can be driven to rotate the spindle. For example, the handle H can be rotated clockwise to rotate the spindle clockwise to drive the breaker body to a test position or a connection position, and vice versa. Direction to rotate the spindle counterclockwise to drive the breaker body to a disconnected position. Here, the inlet position is a connection position for electrically connecting the breaker body to the cradle, and the test position is electrically separated from the cradle, but the control power is connected by the connection between the cradle side and the breaker body side control terminals as described above. It is a position where signal input / output is possible, and the withdrawal position is that the circuit breaker main body is electrically separated from the cradle (terminal part T2 shown in FIG. 4 and the terminal part of the breaker main body separated from each other) and the cradle side and the breaker main body side as described above. The control terminal is separated and the control power is cut off and the input / output of the signal is also cut off.

 Next, referring to Figures 11 to 14 will be described the operating state of the air circuit breaker and the drawer device for the air circuit breaker according to the present invention.

The operation from the withdrawal position (separation position) as shown in FIG. 11 to the test position as shown in FIG. 12 and the initial position withdrawal as shown in FIG. 13 and the withdrawal completed position as shown in FIG. do.

11, that is, the circuit breaker main body is electrically separated from the cradle (terminal part T2 shown in FIG. 4 and the terminal part of the circuit breaker main body separated from each other), and the cradle side and the circuit breaker main body side as described above. In the drawing (separation) state in which the control terminal is disconnected, the control power is cut off, and the input / output of the signal is also cut off, the handle H shown in FIG. 10 or the drive H shown in FIG. By manually rotating the spindle 21 clockwise, the movable plate 22 screwed to the spindle 21 on the threaded portion of the spindle 21 rotating clockwise is moved from the position shown in FIG. Horizontally move to the right as shown in 12. At this time, the pair of first pinion gears 23 geared to the first rack gear 22a provided on the movable plate 22 is half in accordance with the horizontal movement in the right direction on the drawing of the movable plate 22. Rotate clockwise. Therefore, the gear support shaft 24 which axially supports the first pinion gear 23 also rotates counterclockwise. Therefore, the second pinion gear 25, which is coaxially connected with the first pinion gear 23 to the gear support shaft 24, also rotates counterclockwise. According to the counterclockwise rotation of the second pinion gear 25, the draw gear 26 having the gear portion 26a engaged with the gear teeth of the second pinion gear 25 is centered about the first hinge axis HP1. Rotate clockwise. Also, as shown in FIG. 12, the draw gear 26 is rotated clockwise about the first hinge axis HP1 so that the roller 32b is the cam groove portion 26b of the draw gear 26. ), The lever connection protrusion 26c of the draw gear 26 is almost separated from the power connection long groove of the control connector drive lever 28. Therefore, the control terminal drive link 29 descends by its own weight. The lowering of the control terminal drive link 29 also lowers the cradle-side control terminal (connector for power and control signal transmission) connected to the control terminal drive link 29 and movable together, and the control terminal (power and control signal transmission for the breaker main body). Connector). Therefore, the terminals of the cradle and the circuit breaker main body (terminals for the power supply side and the load side power circuit) are separated from each other and the power supply circuit (main circuit) is cut off, but the connection for supplying power to the control unit and transmission of control signals is not provided. As a state made, it becomes a test position as shown in Figure 12 that can be tested to check whether the air circuit breaker in the normal operation.

In the test position as shown in FIG. 12, if the spindle 21 is further rotated clockwise manually by a drive connection of an electric device not shown, that is, a motor not shown, or by using the handle H shown in FIG. With the screw part of the spindle 21 rotating clockwise, the movable plate 22 screwed to the spindle 21 further moves horizontally from the position shown in FIG. 12 to the position shown in FIG. 13. At this time, the pair of first pinion gears 23 geared to the first rack gear 22a provided on the movable plate 22 is half in accordance with the horizontal movement in the right direction on the drawing of the movable plate 22. Rotate further clockwise. Therefore, the gear support shaft 24 which axially supports the first pinion gear 23 also rotates counterclockwise. Therefore, the second pinion gear 25, which is coaxially connected with the first pinion gear 23 to the gear support shaft 24, further rotates counterclockwise. Counterclockwise rotation of the second pinion gear 25 further rotates the draw gear 26 with the gear portion 26a engaged with the second pinion gear 25 clockwise. Further, as shown in FIG. 13, the draw gear 26 is further rotated clockwise about the first hinge axis HP1, so that the roller fits in the cam groove portion 26b of the draw gear 26. 32b is moved horizontally (to the left in the figure) from the test position shown in FIG. 12 to the initial position of inlet shown in FIG. When the roller 32b is horizontally moved to the left in the drawing, as shown in FIG. 11, the first rail plate 30 on which the roller 32b is installed is also horizontally moved in the same direction, thus referring to FIG. 6. As can be done, the breaker main body (see 60 in Fig. 8) is connected through the rail connecting groove portion (see 60 in Fig. 8) of the side connected to the main body connecting protrusion 31 of the first rail plate 30. The horizontal direction is also moved to the left side in the same direction. Therefore, at this time, the main body side terminal portion is in the initial state of entry into contact with the main body connection side terminal portion T2 on the cradle side. At this time, the control terminal drive link 29 is lowered by its own weight in a state where the lever connection protrusion 26c of the draw gear 26 has already separated from the power connection long groove of the control connector drive lever 28. Since the cradle side control terminal (power and control signal transmission connector) and the breaker main body side control terminal (power and control signal transmission connector) are connected, that is, the control power is supplied and the control signal can be transmitted. do. Therefore, the cradle and the terminal portions of the breaker main body start to contact each other, and become a connection initial state (receive initial state) as shown in Fig. 13 of the power circuit (main circuit) on the power supply side and the load side through the air circuit breaker.

On the other hand, in the initial position (connected) as shown in FIG. 13, the spindle 21 is manually operated through a drive connection of an electric device not shown, that is, a motor not shown, or by using the handle H shown in FIG. Further clockwise rotation, the movable plate 22 screwed to the spindle 21 aboard the threaded portion of the spindle 21 which rotates in a clockwise direction from the position shown in FIG. 13 to the position shown in FIG. 14 to the right. Move further horizontally. At this time, the pair of first pinion gears 23 geared to the first rack gear 22a provided on the movable plate 22 is half in accordance with the horizontal movement in the right direction on the drawing of the movable plate 22. Rotate further clockwise. Therefore, the gear support shaft 24 which axially supports the first pinion gear 23 also rotates counterclockwise. Therefore, the second pinion gear 25, which is coaxially connected with the first pinion gear 23 to the gear support shaft 24, further rotates counterclockwise. In response to the counterclockwise rotation of the second pinion gear 25, the draw gear 26 in which the gear portion 26a is engaged with the second pinion gear 25 is connected clockwise about the first hinge axis HP1. Will rotate further. At this time, as shown in FIG. 14, the draw gear 26 is further rotated clockwise about the first hinge axis HP1, so that the roller 32b fitted to the cam groove portion 26b of the draw gear 26. ) Is further moved to the left side in the drawing in the horizontal direction from the state shown in FIG. 13 to the state shown in FIG. When the roller 32b is horizontally moved to the left in the drawing, as shown in FIG. 6, the first rail plate 30 on which the roller 32b is installed is also horizontally moved in the same direction, thus referring to FIG. 6. As can be seen, the breaker body (see 60 in Fig. 8) is also connected through the rail connecting groove portion (see 60 in Fig. 8) of the side connected to the main body connecting protrusion 31 of the first rail plate 30. In the same direction, that is, the horizontal movement to the left in the drawing. Therefore, at this time, the main body side terminal portion (not shown) is brought into the main body connection side terminal portion (refer to symbol T2 in FIG. 4) on the cradle side and is brought into a contact completion state (connection completion state). At this time, since one end of the draw gear 26 is already separated from the groove of the control terminal drive link 29, the cradle side control terminal (power supply and control signal transmission connector) and the breaker main body side control terminal (power supply) And a control signal transmission connector), that is, a control power supply and a state in which the control signal can be transmitted are maintained. Therefore, the cradle and the terminal portions of the breaker main body are completely connected to each other, and the connection state of the power circuit (main circuit) on the power supply side and the load side through the air circuit breaker is completed (inlet completion state), so that current can flow on the power circuit. It becomes a state.

On the other hand, the operation from the connection (retraction) position as shown in Figure 14 to the separation (withdrawal) position as shown in Figure 11 is that the description to the connection position and the operation of the corresponding components in the opposite direction, That is, for example, moving from the left side to the right side is performed by changing only the direction in the opposite direction from the clockwise rotation to the counterclockwise rotation, and thus the detailed description thereof will be omitted.

While pushing counterclockwise, the control terminal drive link 29 is pushed up so that the cradle side control terminal (power and control signal transmission connector) and the breaker body side control terminal (power and control signal transmission connector) are separated. In other words, the control power is cut off and the transmission of the control signal is stopped.

On the other hand, the configuration and operation of the position detection device of the circuit breaker according to the present invention in conjunction with the drawer of the circuit breaker as described above will be described with reference to the drawings of FIGS.

The position detection device of the circuit breaker according to the present invention may be composed of a cell switch assembly 100, as shown in Figure 1 and 15, the cell switch assembly 100 is a switch drive plate 110, the switch drive Horizontally movable switch actuating mechanisms 120, 121, 122, microswitch 130, and support mechanism 150 to convert and provide rotational force of the switch drive plate 110 which is connected to the plate 110 and rotates into a switch opening and closing driving force. , 160, 170). The position detecting device of the circuit breaker according to the present invention, in addition to the cell switch assembly 100 when the scope is extended to the component part of the circuit breaker draw-out apparatus providing the driving force to the driving plate 110, the spindle (Fig. Reference numeral 21 and the handle connecting portion 21a of FIG. 1), the movable plate 22, the first pinion gear 23 and the gear support shaft 24. Reference numeral C in FIG. 1 denotes a cover covering the bottom lead-out mechanism.

The switch drive plate 110 is connected to the drawer of the circuit breaker and is rotatable interlocked and has a guide hole 110a as shown in FIG. 16. As shown in FIG. 16, the switch driving plate 110 includes a shaft connector 110b and a key hole section 110c. The shaft connecting portion 110b is an shaft supporting portion into which an end (see reference numeral 24a in FIG. 18) of the gear supporting shaft 24 is inserted, and secures an interlocking connection between the gear supporting shaft 24 and the switch drive plate 110. In order to include the key of FIG. 17, the key hole 110c may be inserted. Referring to FIG. 17, the key supports the key portion 110c-4 protruding upwardly so as to have a thickness that can be inserted into the key hole portion 110c, and the key portion 110c-4. And a shaft support portion 110c-1 having a shaft hole 110c-2 formed in the center thereof to fix the end portion of the gear support shaft 24 as a base section. In FIG. 17, the key may be made of a resin material having elasticity, and reference numeral 110c-3 denotes a cutout groove cut out for expansion of the shaft hole 110c-2 when installed on the gear support shaft 24 of the key. to be. Thus, the switch drive plate 110 is axially supported by the gear support shaft 24 to be rotatable together in the same direction as the first pinion gear 23 rotates. The switch drive plate 110 may be composed of an arc-shaped plate material of a predetermined angle, preferably a metal plate material.

The switch operating mechanisms 120, 121, and 122 include a moving plate 120, a roller 121, and a switch operating portion 122.

Moving plate 120 is inserted into the guide hole (110a) of the switch drive plate 110 as shown in Figure 17, can be horizontally moved in accordance with the rotation of the switch drive plate 110, switch operation It has a portion 122. As shown in FIG. 16, the movable plate 120 extends downward from both side edges of the horizontal plate portion (not designated) and the horizontal plate portion at which the plurality of switch operating portion receiving portions 120a are formed. And a pair of running leg sections 120b.

The roller 121 is installed to be rotatably supported by a support means such as, for example, a rivet on the rear surface of at least one of the pair of running legs 120b.

As shown in FIG. 16, the switch actuating unit 122 is provided to protrude upward from an upper surface of the moving plate 120 and protrudes upward from the plurality of switch actuating unit receiving portions 120a. It may be composed of a protruding member. The switch operation part 122 may be formed integrally with the moving plate 120 by extracting a plurality of switch operation part receiving portion 120a, or by providing a resilient restoring force separately in the form of a thin leaf plate spring. Modified embodiments of the leaf spring piece configuration that can be attached to the bottom of the 120 by a fixing means such as a screw can also be configured.

The support mechanisms 150, 160, and 170 are means for guiding the horizontal movement of the movable plate 120, and include an enclosure 150, a movable plate guide rail 160, and a bracket 170. .

The moving plate guide rail 160 is a component representative of the support mechanisms 150, 160, and 170. The moving plate guide rail 160 is formed of a pair of thin, narrow, straight plates extending in a straight line and fixed to the enclosure 150. It is installed to guide the horizontal movement of the moving plate (120). That is, the pair of traveling legs 120b of the moving plate 120 are supported on the pair of moving plate guide rails 160 installed in parallel with each other in a straight line, thereby supporting the roller (from the switch drive plate 110). The moving plate 120 may move horizontally along a straight path by the power transmitted through 121.

The enclosure 150 is formed at both sides of the side plate portion, a portion connecting both side plate portions from the upper side and the lower side portion of the side plate portion to allow the moving plate guide rail 160 is fixed and allow the running leg 120b to pass through. And a cutout extending in the horizontal direction.

The lower end portion of the enclosure portion 150 is fixed to the limiting plate 180 for limiting the horizontal movement in one direction of the moving plate 120 by a fixing means such as a screw.

The bracket 170 may be fixed to the side plate 12 to support the enclosure 150 as shown in FIG. 18. Fixing the bracket 170 to the side plate 12 may be made by screwing the side plate 12 through the screw holes provided on both sides of the bracket 170, the bracket 170 and the enclosure 150 The connection installation may be performed by inserting a bolt through a screw hole provided in the center connection surface of the bracket 170 and fastening a nut so as to correspond to a plurality of screw holes provided on one side plate of the enclosure 150.

The micro switches 130a and 130b have actuating lever parts 130a-1 and 130b-1 which are in contact with the switch actuating part 122 of the moving plate 120, and the switch actuating part 122 of the moving plate 120. According to the horizontal moving position of the position of the breaker including the pull-in position and the pull-out position is detected to provide an electrical signal according to the detected position. The microswitches 130a and 130b may include a first row microswitch 130a and a second row microswitch 130b, each of the first row microswitch 130a and the second row microswitch. 130b may include at least one microswitch. According to a preferred embodiment of the present invention, the first row microswitch 130a and the second row microswitch 130b are each composed of two microswitches, and thus the position including the pull-in position and the pull-out position of the breaker. A plurality of microswitches may be configured for each column for the reliability of signal generation when generating an electrical signal. The first row microswitch 130a detects that the breaker, in particular the breaker body is located at a predetermined first position, emits a corresponding electrical signal, and the second row microswitch 130b is a breaker, in particular the breaker body, It detects the position in the second position and emits a corresponding electrical signal, where the first position is the retracted position and the second position may be the test position. In addition, when no electrical signal is detected from both the first row microswitch 130a and the second row microswitch 130b, it may be determined that the circuit breaker, in particular, the circuit breaker main body is located in the withdrawal position. For example, the electrical signal output from the first column microswitch 130a may drive the entrance position indicator lamp connected to the front of the circuit breaker or the outside of the circuit breaker through a signal line, and the second column microswitch 130b. The electrical signal outputted by) may drive the test position indicator lamp connected to the front of the breaker or the outside of the breaker through a signal line so as to turn on, and from the first row microswitch 130a and the second row microswitch 130b. When none of the electrical signals are output, power is supplied, which is not shown, to drive the draw-out position indicator lamp connected to the front of the breaker or the outside of the breaker through a signal line. In another embodiment, the electrical signals from the first row microswitch 130a and the second row microswitch 130b are transmitted to a microprocessor embedded in an overcurrent relay (not shown), which is a control unit of a circuit breaker, through a signal line. The microprocessor outputs the output signal only from the first column microswitch 130a as described above, based on the electrical signals from the first column microswitch 130a and the second column microswitch 130b. When the electrical signal) is received, it is determined as a retracted position, and when the output signal is received only from the second column microswitch 130b, it is determined as a test position, and the first column microswitch 130a and the second column microswitch 130b are determined. If there is no output of electrical signal from all, it can be configured to determine the withdrawal position, and at this time, the microprocessor of the overcurrent relay determines the position of the circuit breaker. It is also possible to configure the display through a display such as a liquid crystal display (LCD), not shown.

In FIG. 16, reference numeral 140 may be formed of a thin insulating paper as an insulating plate for electrical insulation between respective microswitches.

The position detecting device of the circuit breaker according to the present invention is capable of being manually rotated when extending the category to the component part of the circuit breaker pull-out unit providing the driving force to the driving plate 110, and for pulling in or drawing the main body of the circuit breaker. A spindle 21. Since the spindle 21 is the same as described above with respect to the drawer of the breaker, detailed description will be omitted to avoid redundant description.

The movable plate 22 is screwed with the spindle 21, is movable in the front-rear direction along the rotating spindle 21, and has the rack gear part 22a on the surface, and with respect to the drawer out of the circuit breaker. As described above, detailed descriptions will be omitted in order to avoid redundant descriptions.

The first pinion gear 23 is screwed with the rack gear portion 22a of the movable plate 22 to be rotatable in accordance with the forward and backward movement of the movable plate 22, and as described above with respect to the take-out device of the breaker. Therefore, detailed description will be omitted to avoid duplicate description.

The gear support shaft 24 axially supports the first pinion gear 23 and is rotatable in accordance with the rotation of the first pinion gear 23, and as described above with respect to the take-out device of the breaker, in order to avoid redundant description. Detailed descriptions will be omitted.

Meanwhile, referring to FIG. 16, the assembly method of the position detection device of the circuit breaker according to the present invention will be described.

First, the moving plate 120 provided with the switch operating unit 122 and the roller 121 is prepared.

Next, the extension part (large diameter of the upper left part of the guide hole 110a) of the guide hole 110a of the switch drive plate 110 fixedly connected to the end of the gear support shaft 24 by the key. The roller 121 is fitted to assemble the switch driving plate 110 and the moving plate 120 to be connected.

Next, in a state in which the traveling leg 120b of the moving plate 120 is placed on both moving plate guide rails 160, both moving plate guide rails 160 are provided through screw fixing holes provided in the lower part of the enclosure 150. By screwing, the assembly of the moving plate 120, the moving plate guide rail 160, and the enclosure 150 is obtained.

Next, each of the first row microswitch 130a and the second row microswitch 130b, which is composed of two, is prepared, and the insulation plates 140 are inserted into both sides of each micro switch.

Next, the first row microswitch 130a and the second row microswitch 130b are inserted through the upper opening of the enclosure 150, and through fixing screws provided on the upper side of both side plates of the enclosure 150. The first row microswitch 130a and the second row microswitch 130b are fixed to the enclosure 150 by fastening screws.

Next, the limiting plate 180 is screwed through a screw hole provided at the lower end of the enclosure 150 to fix it to the enclosure 150.

Next, a bolt nut is fastened with the enclosure 150 through a screw hole provided in the front center of the bracket 170 to obtain an assembly of the bracket 170 and the enclosure 150.

Finally, the bracket 170 is screwed to the side plate 12 as shown in FIG. 18 to complete the assembly of the position detection device of the circuit breaker according to the present invention.

On the other hand, with reference to Figures 18 to 20 will be described the position detection operation of the position detection device of the circuit breaker according to the present invention.

First, in the disconnected position of the circuit breaker as shown in FIG. 18, when the switch driving plate 110 is rotated about 45 degrees clockwise from the position of FIG. 19 when the position of FIG. do. At this time, the roller 121 of the moving plate 120 is located at the left end of the guide hole (110a) of the switch drive plate 110, the right end of the moving plate 120 is the most limited to the limiting plate 180 This is the location you approached. In addition, at this time, the switch operating portion 122 protruding upward from the upper surface of the moving plate 120 is the operating lever 130a-1 of the first row microswitch 130a and the operating lever of the second row microswitch 130b. It is spaced apart from the part 130b-1, and there is no contact. Therefore, the first row microswitch 130a and the second row microswitch 130b do not emit electrical signals. Accordingly, when the first column microswitch 130a and the second column microswitch 130b are connected to a drawing display lamp of a not shown connected to a power source through a signal line, the corresponding drawing display lamp may be turned on. When the first row microswitch 130a and the second row microswitch 130b are connected via a signal line to the microprocessor of the overcurrent relay which is the control unit of the breaker, the microprocessor is the first row microswitch 130a and the second row. If there is no electrical signal from the microswitch 130b, the current position of the circuit breaker main body of the circuit breaker may be determined as the drawing position, and driving control may be performed to display the drawing position through a connected display (not shown).

Next, in the test position of the circuit breaker as shown in FIG. 19, the switch driving plate 110 is rotated about 45 degrees counterclockwise from the position of FIG. 18. At this time, the roller 121 of the movable plate 120 is moved and positioned from the left end of the guide long hole 110a of the switch drive plate 110 to the center side, and is moved by the power transmitted by the roller 121. The right end of the plate 120 is moved from the limiting plate 180 to the left in the horizontal direction by a predetermined distance. In addition, at this time, the switch operating portion 122 protruding upward from the upper surface of the moving plate 120 contacts only the operating lever portion (see reference numeral 130a-1 in FIG. 16) of the first row microswitch (see reference numeral 130a in FIG. 16). To pressurize. Therefore, only the first column microswitch 130a emits an electrical signal, and the second column microswitch 130b does not emit an electrical signal. Accordingly, when the first column microswitch 130a is connected to a test position display lamp (not shown) connected to a power source through a signal line, the corresponding test position display lamp may be turned on. When the first column microswitch 130a and the second column microswitch 130b are connected to the microprocessor of the overcurrent relay which is the control unit of the circuit breaker via the signal line, the microprocessor is an electrical signal only from the first column microswitch 130a. When is received, the current position of the circuit breaker main body of the circuit breaker may be determined as the test position, and driving control may be performed to display the test position through a connected display (not shown).

Next, in the connected position of the circuit breaker as shown in FIG. 20, the switch driving plate 110 is rotated about 45 degrees further counterclockwise from the position of FIG. 19. At this time, the roller 121 of the moving plate 120 is located at the right end of the guide long hole 110a of the switch drive plate 110, and the right end of the moving plate 120 is removed from the limiting plate 180. It is a position moved by a predetermined distance furthest to the left in the horizontal direction. In addition, at this time, the switch operating portion 122 protruding upward from the upper surface of the movable plate 120 is in a state of being in contact with and pressing only the operating lever 130b-1 of the second row microswitch (see reference numeral 130b in FIG. 16). . Therefore, only the second column microswitch 130b emits an electrical signal, and the first column microswitch 130a does not emit an electrical signal. Accordingly, when the second column microswitch 130b is connected to an incoming display lamp (not shown) connected to a power source through a signal line, the corresponding incoming display lamp may be turned on. When the first row microswitch 130a and the second row microswitch 130b are connected via a signal line to the microprocessor of the overcurrent relay which is the control unit of the breaker, the microprocessor only makes electrical signals from the second row microswitch 130b. If is received, the current position of the circuit breaker main body of the circuit breaker is determined as the retracted position, it may be drive control to display the retracted position through the display of the connected not shown.

1 is a partial cutaway perspective view showing the overall configuration of the cradle (cradle) of the breaker including the position detection device of the breaker according to the invention,

Figure 2 is a partially cutaway perspective view showing the configuration of the take-out device and the cradle-side terminal portion in the cradle of the breaker that can install the position detection device of the breaker according to the present invention,

3 is a perspective view of the cradle-side terminal board separately showing only the cradle-side terminal portion and the terminal substrate for supporting the terminal portion in FIG.

FIG. 4 is a cradle side terminal portion plan view separately showing only the cradle side terminal portion in FIG. 3;

5 is a perspective view showing the configuration of a take-out apparatus in the cradle of the breaker;

FIG. 6 is a perspective view of the first rail plate separately showing the first rail plate in the cradle of the breaker; FIG.

7 to 10 are diagrams illustrating a process of installing a circuit breaker main body in a cradle in a circuit breaker, and showing a process of connecting a handle to a handle connecting end of a spindle for manual retraction or withdrawal.

FIG. 7 is an operation state diagram of a cradle of a breaker that shows a state in which a first rail plate and a second rail plate which support the breaker body and transmit a driving force when drawing in and out of the cradle of the breaker are drawn out to the maximum;

8 is an operating state diagram showing an operating state in which the breaker body is installed to be supported by the cradle in the state of FIG. 7;

9 is an operational state diagram showing an operation of pushing the breaker body by hand to move to the retracted position;

FIG. 10 is an operation state diagram illustrating an operation of connecting the handle to the handle connection end of the spindle to manually drive the breaker body in the inlet or outlet direction; FIG.

11 to 14 is an operation state diagram showing the operation of the draw-out device in the circuit breaker,

11 is a side view showing the operating state of the take-out device of the circuit breaker in the withdrawal position,

12 is a side view showing an operating state of a drawer of the breaker in the test position,

13 is a side view showing an operating state of the take-out device of the breaker in the initial position,

14 is a side view showing an operating state of a drawer of the breaker in the retracted position;

15 is a perspective view illustrating main parts of the main part of the position detecting device of the circuit breaker according to the present invention in an assembled state;

16 is an exploded perspective view of a main part of a position detection device of a circuit breaker according to the present invention;

17 is a perspective view showing an embodiment of a key in the position detection device of the circuit breaker according to the present invention,

18 is an operational state diagram when the main part of the breaker position detection device according to the present invention is taken out;

19 is an operational state diagram when the test position of the main part of the position detection device of the circuit breaker according to the present invention;

20 is an operation state diagram when the main part of the position of the breaker position detecting apparatus according to the present invention is in the retracted position.

* Explanation of symbols on the main parts of the drawings

10: cradle 11: terminal board

T1: External connection side terminal part T2: Main body connection side terminal part

T3: main body side terminal

12: sidel plate

UR: upper rail LR: lower rail

21: spindle 21a: handle connection

22: movable plate 22a: rack gear

23: first pinion gear

24: gear support shaft 24a: gear support shaft end

25: second pinion gear

26: draw gear 26a: gear portion

26b: cam slot section 26c: lever connection protrusion

HP1: First Hinge Pin HP2: Second Hinge Pin

28: control connector driving lever (28)

29: control connector drinving link

HP: hinge shaft 30: first rail plate

31: body connection protrusion

32a: roller supporting pin

32b: roller 32c: roller fixing rivet

40: second rail plate 60: breaker body

60a: rail connection groove

100: cell switch assembly

110: switch drive plate 110a: guide hole

110b: shaft connection part 110c: key hole section

110c-1: shaft support 110c-2: shaft hole

110c-3: cutting groove 110c-4: key section

120: moving plate 120a: switch operating portion receiving portion

120b: running leg section

121: roller

122: switch operating portion 130a: first row microswitch

130b: second row microswitch 130a-1: operating lever part

130b-1: Operation lever part 140: Insulation plate

150: enclosure 160: moving plate guide rail (rail)

170: bracket 180: limit plate

Claims (14)

In the position detecting device of the circuit breaker, A switch driving plate connected to a drawer of the breaker and rotatable interlocked and having a guide hole; A moving plate inserted into and connected to the guide slot of the switch driving plate, the movable plate being horizontally movable in accordance with the rotation of the switch driving plate and having a switch operating portion; A support mechanism for guiding the horizontal movement of the movable plate; And An actuating lever portion contactable to the switch actuating portion of the movable plate, and detecting a position including the inlet position and the ejecting position of the circuit breaker according to the horizontal shifting position of the switch actuating portion of the movable plate to obtain an electrical signal according to the detected position; Breaker position detection device comprising a micro switch provided. The method of claim 1, And a roller which is guided by the guide slot of the switch driving plate and receives a driving force from the rotating switch driving plate. The movable plate is connected to the roller to be horizontally moved together with the roller by a driving force provided from the switch driving plate to the roller, and to open and close the micro switch in contact with the operation lever of the micro switch. Breaker position detection device characterized in that it has the switch operating portion. The method of claim 1, The support mechanism, Position fixed device of the circuit breaker, characterized in that it comprises a pair of guide rails fixedly installed to guide the horizontal movement of the moving plate. The method of claim 1, The moving plate,  Horizontal plate portion; And Breaker position detection device comprising a pair of running legs extending downward from both side edges of the horizontal plate portion. The method of claim 1, The switch operation unit, Breaker position detection device, characterized in that consisting of a protruding member protruding upward from the upper surface of the moving plate. The method of claim 1, The micro switch, At least one first column micro switch for detecting that the breaker is located at a predetermined first position; And And at least one second row microswitch for detecting that the breaker is located at a predetermined second position. In the position detecting device of the circuit breaker, A spindle that is manually rotatable and that drives the drawer's main body in or out; A movable plate screwed with the spindle, the movable plate being movable in the front-rear direction along the rotating spindle and having a rack gear portion on a surface thereof; A pinion gear screwed to the rack gear portion of the movable plate and rotatable according to the forward and backward movement of the movable plate; A gear support shaft for supporting the pinion gear and being rotatable in accordance with the rotation of the pinion gear; A switch drive plate axially supported by the gear support shaft and rotatable together with the rotation of the pinion gear; A switch operating mechanism connected to the switch driving plate and horizontally movable to convert and provide a rotational force of the rotating switch driving plate into a switch opening and closing driving force;  It characterized in that it comprises a micro-switch having an operating lever portion located in the movement trajectory of the switch operating mechanism in contact with the switch operating mechanism to receive a mechanical opening and closing force, and outputs an electrical signal indicating the position of the breaker. Breaker position detection device. The method of claim 7, wherein Breaker position detection device further comprises a support mechanism for guiding the horizontal movement of the switch operating mechanism. The method of claim 8, The support mechanism, Position fixed device of the circuit breaker, characterized in that it comprises a pair of guide rail fixedly installed to guide the horizontal movement of the switch operating mechanism. The method of claim 7, wherein The switch drive plate has a guide hole, The switch mechanism, A roller which is guided by the guide slot of the switch driving plate and receives a driving force from the rotating switch driving plate; And A moving plate which is connected to the roller and is movable horizontally together with the roller by a driving force provided from the switch driving plate to the roller, and which is in contact with the operating lever of the micro switch to open and close the micro switch. Breaker position detection device, characterized in that comprising a. The method of claim 10, And a protruding member provided to protrude upward from an upper surface of the moving plate so as to contact the operating lever of the micro switch. The method of claim 7, wherein The micro switch, At least one first column micro switch for detecting that the breaker is located at a predetermined first position; And And at least one second row microswitch for detecting that the breaker is located in a predetermined second position. The method of claim 10, The moving plate,  Horizontal plate portion; And Breaker position detection device comprising a pair of running legs extending downward from both side edges of the horizontal plate portion. The method of claim 11, The protruding member is a position detecting device of the breaker, characterized in that consisting of a leaf spring piece.

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