KR101143817B1 - Mcc having an intergrated unit storage structure of mccb handle and unit insertion handle and position switch - Google Patents

Abstract

PURPOSE: A motor control center having a unit accepting structure is provided to fit or pull out a unit to a unit accepting chamber and to turn on and off a switch of a breaker with a handle operation. CONSTITUTION: A protrusion pin(7) is projected from the upper side of a bottom cover(5) to a vertical direction of the bottom cover. A unit(11) is separated from the bottom cover by leaving a gap of a predetermined height. A breaker(13) is installed in inside of the unit and connects and cuts an electric circuit every time a switch is turned on and off. A front door(19) is installed to the front side of the unit. An operating handle is installed to the front side of the unit. A switch on-off means turns on and off the switch of the breaker. A spiral groove is interlocked with the protrusion pin.

Description

MCC with WNC storage structure incorporating MCC handle, UNCT input handle and position switch {MCC HAVING AN INTERGRATED UNIT STORAGE STRUCTURE OF MCCB HANDLE AND UNIT INSERTION HANDLE AND POSITION SWITCH}

The present invention relates to an MCC having a UNIT storage structure in which an MCCB handle, a UNIT input handle, and a position switch are integrated. An MCCB handle is turned on or off or an MCC panel is provided by simply pressing or rotating an external exposed operation handle. The present invention relates to an MCCB having a unit accommodation structure in which an MCCB handle and a unit input handle and a position switch are integrated with each other.

In general, MCC is an abbreviation of Motor Control Center and is a system for centrally controlling power in operating a motor.

The main components of the MCC are No Fuse Breaker (NFB), Magnetic Contactor (MC), Electronic Over Current Relay (EOCR), Current Transfomer (CT), V-meter, A-meter, Indicator Lamp, Relay, and The structure and function depend on the difficulty and safety of maintenance.

On the other hand, the general MCC as shown in Figure 16 and 17, the front door of each unit may be equipped with a breaker operation handle that can turn on or off the breaker.

In addition, in some cases, the front door of each unit may be provided with an operation handle for operating the breaker and a pull-out handle for taking out or inserting the unit into the unit accommodation chamber.

However, the existing MCC panel having the structure as described above has to turn off the breaker by using the operation handle when the unit is taken out of the unit accommodation chamber, and then rotate the handle inlet / out handle to remove the unit from the unit storage chamber. There was a problem that the work is cumbersome by performing two tasks with two handles, and there is a problem that the surroundings are distracted because several operation switches are provided on the front door.

Meanwhile, as a background technology of the present invention, there is a "power supply cut-off device when opening a door" of the application number "10-2006-0032780". The power supply cut-off device when the door is opened is installed in a device equipped with a door. In the door open power supply cutoff device for blocking the power supply when the door is opened, provided in the main body of the device, the switch is provided on the front portion so as to reciprocate in one direction is provided with a switch for turning on / off the power supply Breakers, and are arranged to face each other at predetermined intervals on both sides of the switch, a pair of support brackets, respectively installed on the front portion of the breaker, disposed across the pair of support brackets, Reciprocating movement in the same direction as the movement direction, the switch through hole is formed so that the switch can penetrate, the switch It is arranged to be spaced apart on one side of the through hole, the movable plate formed with a guide hole elongated in the vertical direction with respect to the movement direction of the switch, one end of any one of the support bracket of the pair of support brackets and one side of the moving plate connected to each other And a spring member, a body part, and a pin part protruding rearward to one side of the body part, the pin part inserted into the guide hole, and the other side of the body part. A moving plate moving member comprising a shaft seating portion projecting forward, and a shaft member having one end seated on the shaft seating portion and the other end connected to the handle, and when the handle is rotated in one direction, the shaft member and the Moving plate moving member is rotated with the handle, the pin portion Is moved along the guide hole, and the moving plate by moving the pin portion is moved in the downward direction is also moved downward with the switching through through the switch, through holes is characterized in that the power supply of the circuit breaker block.

In order to solve the above problems, the present invention provides an MCCB having a unit accommodation structure in which an MCCB handle capable of turning on / off a switch of a circuit breaker and a unit input handle and a position switch are integrated. There is a purpose.

In addition, another object of the present invention is to provide an MCC having a unit accommodation structure in which an MCCB handle, a unit input handle, and a position switch are integrated so that a unit can be inserted or removed by a single handle operation.

In order to achieve the above object, the MCCB having a UNIT storage structure incorporating an MCCB handle, a UNIT input handle, and a position switch according to the present invention includes an MCC panel having two or more unit storage chambers, and a bottom of the unit storage chamber. The lower cover which is placed on the lower cover, the protruding pin protruding in the vertical direction of the lower cover from the upper surface of the lower cover, the square hole is provided at the bottom contacting the protruding pin while being fitted into the unit accommodation chamber and the lower cover and the rail are coupled to the lower cover and Units separated by a gap of a predetermined height, breakers for connecting or disconnecting electric lines each time the switch is turned on or off, and a cylindrical shape, and are fitted with protrusion pins on the outer circumferential surface thereof. The bite is equipped with a spiral groove and lies in a position facing the square hole inside the unit. It has a unit pull-out shaft exposed outward. In addition, the present invention is provided with a circuit breaker by interlocking two or more gears when the front door is mounted on the front of the unit, the operation handle mounted on the front door, while rotating in any direction while pressing the operation handle. A switch on / off means for turning the switch on or off, and two or more gear gears interlocked when one direction is rotated in a state in which the operation handle is not pressed, and the unit pull-out shaft is moved in either direction. It further comprises a unit draw-out means for rotating. At this time, when the unit pull-out shaft is rotated in one direction by the unit pull-out means, the protruding pin is helically grooved to leave the unit pull-out shaft or inserted into the unit pull-out shaft, and the unit is pulled out of the unit storage chamber or the unit It will fit in the storage room.

The MCC having the UNIT storage structure in which the MCCB handle, the UNIT input handle, and the position switch are integrated according to the present invention having such a structure, when the operation handle is pressed and rotated in either direction, two or more gear gears interlock with each other. Equipped switch can be turned on or off.

At this time, while the switch is turned on or off, the unit accommodated in the unit accommodation chamber becomes unable to move because the pin provided on the handle shaft swings in the idle portion.

On the contrary, if the breaker control shaft faces the insertion groove and then rotates the operation handle in one direction without pressing the operation handle, the spiral groove provided in the unit pull-out shaft rotates in one direction, and the The fitted protruding pins come out of the spiral groove.

Next, pulling the operation handle pulls the unit out of the unit storage chamber.

Therefore, the MCC having a UNIT storage structure integrating the MCCB handle, the UNIT input handle, and the position switch according to the present invention can not only turn on / off the switch of the breaker with a single handle operation, but also insert or remove the unit from the unit storage chamber. There is an advantage that it can.

1 is a front view of the MCC board equipped with the present invention,
Figure 2 is a side view of the MCC board equipped with the present invention,
3 is an exploded perspective view of the present invention,
4 is a view for explaining a first gear and the circuit breaker control shaft and pins mounted on the handle shaft,
5 is a view for explaining the annular jaw and the insertion groove and the guide groove installed in the first bracket;
Figure 6 is a view for explaining the pin, the fifth tooth gear, and the clutch assembly installed on the handle shaft,
7 is a cross-sectional view of the clutch bundle cut in the AA 'direction and the BB' direction,
8 to 12 are views for explaining an embodiment in which the switch of the breaker is turned on (On) when rotated in one direction while pressing the operation handle,
13 to 15 are views for explaining an embodiment of exiting from the protruding pin while the spiral groove is rotated when rotated in one direction without pressing the operation handle,
16 is a view for explaining a conventional technology equipped with a breaker operation handle,
Fig. 17 is a view for explaining a conventional technique provided with operation handles and draw-out drawer handles each functioning in one unit;

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

The MCC having a UNIT storage structure in which the MCCB handle, the UNIT input handle, and the position switch are integrated according to the present invention has an MCC board having two or more unit accommodation chambers 1 as shown in FIGS. 1 to 3. ), A lower cover 5 placed on the bottom of the unit accommodation chamber 1, a protruding pin 7 protruding in the vertical direction of the lower cover 5 from an upper surface of the lower cover 5, and the unit accommodation. Square hole (9) is provided at the bottom contacting the protruding pin (7) while being fitted into the seal (1), the lower cover (5) and the rail (10) are coupled to the unit spaced apart from the lower cover (5) by a predetermined height (11), a breaker 13 mounted inside the unit 11 and connecting or disconnecting an electric line whenever the switch is turned on or off, and a protruding pin formed on an outer circumferential surface thereof in a cylindrical form. 7 is provided with a helical groove 15 for engagement with the square hole 9 facing the inside of the unit 11. It becomes laid in value and one outer peripheral surface provided with a take-off unit the incoming shaft 17 exposed to the outside of unit 11 through a square hole 9.

3, the front door 19 mounted on the front of the unit 11, the operation handle 21 mounted on the front door 19, and the operation handle 21 are illustrated in FIG. 3. Switch on / off means for turning on or off the switch provided in the circuit breaker 13 by interlocking two or more toothed gears when rotated in either direction while pressing and the operation handle 21 It further includes a unit pull-out means for rotating the unit pull-out shaft 17 in any direction by interlocking two or more tooth gears when rotated in any direction without pressing ().

When the unit pull-out shaft 17 is rotated in one direction by the unit pull-out means, the protruding pin 7 rides through the spiral groove 15 to leave the unit pull-out shaft 17 or the unit pull-out shaft 17 Unit 11 can be pulled out of the unit receiving chamber 1 or fitted into the unit receiving chamber 1.

On the other hand, the switch on / off means, as shown in Figure 3, the vertical direction of the unit 11 from the bottom surface of the unit 11 disposed between the front door 19 and the unit pull-out shaft 17 The first bracket 27, the through hole 29 penetrating the circumferential surface of the first bracket 27 facing the operation handle 21, one end is connected to the operation handle 21 and the other end is The handle shaft 31 which extends straight into the unit 11 through the through hole 29 and is fixed to the handle shaft 31 and the operation handle 21 is pressed to the inside of the unit 11 together with the handle shaft 31. A first tooth gear 35 that engages with the second tooth gear 33 when inserted into the shaft, and is rotated while being axially fixed to the first bracket 27 and through holes 29 in the first bracket 27. A second tooth gear 33 arranged on the same vertical line as

Further, the switch on / off means is fixed to the first bracket 27 facing the breaker 13 via the breaker movable shaft 37 and with the breaker movable shaft 37 as shown in FIG. The third tooth gear 39 is rotated, and the tooth gear lying on the bottom surface of the unit 11 in the form of a straight line and provided on the upper surface is engaged with the second tooth gear 33 and the third tooth gear 39. When the second gear gear 33 is rotated in either direction, the rack gear 41 for rotating the third gear gear 39 while moving in the left horizontal direction or the right horizontal direction, and the breaker movable shaft 37 It further comprises a movement switching means 43 for switching the rotational movement to linear movement to turn on or off the switch of the circuit breaker 13 when the circuit breaker movable shaft 37 is rotated in either direction.

In addition, the switch on / off means, as shown in Figures 4 and 5, and an annular jaw 45 protruding from the edge of the through-hole 29 in the direction of the front door 19 and in the form of a ring (Ring) and When projected in the orthogonal direction of the handle shaft 31 from the outer peripheral surface of the handle shaft 31 disposed between the operation handle 21 and the first gear gear 35 and rotated together with the handle shaft 31 Breaker control shaft 47 whose radius of rotation is larger than the inner diameter of the annular jaw 45, when one side edge of the annular jaw 45 is cut toward the front door 19, the breaker control shaft ( 47 is inserted into the insertion groove 49, and the annular jaw 45 in the circumferential direction of the annular jaw 45 from one end of the insertion groove 49 adjacent to the front door 19 to cut the breaker control shaft ( It further comprises a guide groove 51 to move in the circumferential direction of the annular jaw 45 while the 47 is fitted.

Meanwhile, as shown in FIGS. 3 and 6, the unit pull-out means is perpendicular to the rectangular hole 9 from one side and the other side of the square hole 9 with the unit pull-out shaft 17 interposed therebetween. A fixed shaft 55 for fixing the second bracket 53 and the unit pull-out shaft 17 extending side by side in the direction to the second bracket 53 such that the unit pull-out shaft 17 is rotated. And a fourth tooth gear 57 fitted to the fixed shaft 55 to be rotated together with the unit drawing-out shaft 17, and fixed to a second bracket 53 facing the handle shaft 31. The fifth tooth gear 59 meshes with the gear 57 and the handle shaft 31 penetrates, the fifth gear gear 59 is integrally coupled with the gear shaft 31, and the handle shaft 31 penetrates, and the operation handle 21 is When the handle shaft 31 is rotated in one direction while being pressed, it is not engaged with the handle shaft 31 and is idling, and the operation handle 21 is not pressed. When the handle shaft 31 is rotated in one direction, the clutch bundle 61 is engaged with the handle shaft 31 to rotate the fifth gear gear 59, and the first gear gear 35 and the clutch bundle 61 are rotated. It is provided with an elastic member 63 is fitted to the handle shaft 31 disposed between the and elastically contracted or expanded.

As shown in FIG. 6, a pin 65 protruding in the orthogonal direction of the handle shaft 31 from the outer circumferential surface of the handle shaft 31 is inserted into the handle shaft 31 inserted into the clutch bundle 61. The clutch bundle 61 has a cylindrical shape through which the handle shaft 31 penetrates, and an inner end of the clutch bundle 61 which is in contact with the fifth tooth gear 59 is shown in FIG. By rotating the inside of the cylinder 61 in a cylindrical form is provided with an idle portion 67 for the handle shaft 31 and the pin 65 to idle in the clutch bundle 61 when rotated while the pin 65 is inserted, The inner rear end of the clutch bundle 61 is provided with a pin fitting portion 69 engaged with the pin 65 so that the power of the handle shaft 31 when the pin fitting portion 69 and the pin 65 are engaged with the clutch bundle is bundled. A power transmission unit 71 for transmitting to 61 may be provided.

The operation of the MCC having the UNIT storage structure in which the MCCB handle, the UNIT input handle, and the position switch are integrated according to the present invention having the above-described structure will be described with reference to FIGS. 8 to 15.

First, as shown in FIG. 8 and FIG. 9, the circuit breaker control shaft 47 is inserted by pushing the operation handle 21 to turn on the switch of the circuit breaker 13 accommodated in one unit 11. As shown in FIGS. 10 and 11, the pin 65 provided in the handle shaft 31 is pulled out of the pin fitting portion 69 provided in the clutch bundle 61 while being inserted into the groove 49. I move to idle part 67.

In addition, the first gear gear 35 integrally coupled with the handle shaft 31 is engaged with the second gear gear 33, and the elastic member 63 is pushed by the first gear gear 35 to contract.

Next, when the operation handle 21 is rotated counterclockwise while pressing and holding the operation handle 21, the breaker control shaft 47 moves to the end of the guide groove 51 while being fitted in the guide groove 51. At the same time, the first gear gear 35 is rotated counterclockwise along the handle shaft 31, and the second gear gear 33 meshed with the first gear gear 35 is rotated clockwise.

In addition, as the second cogwheel 33 rotates clockwise, the rack gear 41 meshing with the second cogwheel 33 moves in the left horizontal direction, as shown in FIG. The gear 41 rotates the third gear gear 39 and the breaker movable shaft 37 clockwise.

On the other hand, when the breaker movable shaft 37 is rotated in the clockwise direction, the motion switching means 43 changes the rotational movement of the breaker movable shaft 37 into a linear movement to turn on the switch provided in the breaker 13. )

On the other hand, when the operation handle 21 is rotated in the clockwise direction to turn off the switch of the breaker 13 accommodated in one unit 11, the breaker control shaft 47 is released from the guide groove 51 and At the same time, the first tooth gear 35 is rotated clockwise along the handle shaft 31, and the second tooth gear 33 meshed with the first tooth gear 35 is rotated counterclockwise.

In addition, as the second tooth gear 33 rotates in the counterclockwise direction, the rack gear 41 engaged with the second tooth gear 33 moves in the right horizontal direction, and at the same time, the rack gear 41 The gear gear 39 and the breaker movable shaft 37 are rotated counterclockwise.

At this time, the movement switching means 43 turns off the switch provided in the breaker 13 by changing the rotational movement of the breaker movable shaft 37 to linear movement when the breaker movable shaft 37 rotates counterclockwise. )

On the other hand, when the circuit breaker control shaft 47 is in contact with the insertion groove 49, the contracted elastic member 63 is expanded to push up the first gear gear 35, the first gear gear 35 is The second tooth gear 33 is released.

In addition, the breaker control shaft 47 is disengaged from the insertion groove 49 by the expanded elastic member 63, the pin 65 provided on the handle shaft 31 is pinned out of the idle portion 67 It is moved to the fitting portion (69).

Meanwhile, as shown in FIG. 13, in order to take out the unit 11 accommodated in the unit accommodation chamber 1, when the handle is rotated in a clockwise direction, it is integrally coupled with the handle shaft 31 and a pin fitting portion ( 69 is rotated clockwise while the pin 65 engaged with the clockwise rotation.

At this time, as the clutch bundle 61 is rotated in the clockwise direction, the fifth gear gear 59 integrally coupled with the clutch bundle 61 is rotated in the clockwise direction along the clutch bundle 61 and rotates in the clockwise direction. The fifth tooth gear 59 to be rotated rotates the engaged fourth tooth gear 57 counterclockwise.

Thus, the unit pull-out shaft 17 integrally coupled with the fourth tooth gear 57 is rotated counterclockwise.

At this time, the spiral groove 15 provided in the unit pull-out shaft 17 is separated from the protruding pin 7 while being rotated counterclockwise as shown in FIGS. 14 and 15.

In addition, when the unit 11 is removed from the unit storage chamber 1 or the unit 11 is inserted into the unit storage chamber 1, the breaker control shaft 47 is caught by the annular jaw 45 and the operation handle 21 is removed. Is not pressed, the switch of the breaker 13 cannot be adjusted.

On the other hand, in order to put the taken out unit 11 back into the unit storage chamber 1, the end of the unit 11 is pushed into the unit storage chamber 1, and the end of the spiral groove 15 is in contact with the protruding pin 7. To do that.

Next, when the operation handle 21 is rotated in the counterclockwise direction, while being integrally coupled with the handle shaft 31 and the pin 65 engaged with the pin fitting portion 69 is rotated in the counterclockwise direction, the clutch bundle ( Rotate 61) counterclockwise.

At this time, as the clutch bundle 61 is rotated counterclockwise, the fifth gear gear 59 integrally coupled with the clutch bundle 61 is rotated counterclockwise along the clutch bundle 61, The fifth cogwheel gear 59 rotated clockwise rotates the engaged fourth cogwheel gear 57 clockwise.

Accordingly, the unit pull-out shaft 17 integrally coupled with the fourth tooth gear 57 is rotated clockwise, and the spiral groove 15 provided in the unit pull-out shaft 17 rotates clockwise. While being fitted to the protruding pin (7).

The MCC having the UNIT storage structure in which the MCCB handle, the UNIT input handle, and the position switch are integrated according to the present invention having such a structure, when the operation handle 21 is pressed and rotated in either direction, two or more toothed gears interlock with each other. The switch provided in the breaker 13 can be turned on or off.

At this time, while the switch is turned on or off, the unit 65 accommodated in the unit accommodation chamber 1 cannot move because the pin 65 provided on the handle shaft 31 floats in the idle portion 67. do.

On the other hand, when the breaker control shaft 47 faces the insertion groove 49, and then rotates the operation handle 21 in any direction without pressing the operation handle 21, the unit pull-out shaft 17 As the spiral groove 15 provided in the shaft is rotated in one direction, the protruding pin 7 fitted into the spiral groove 15 is released from the spiral groove 15.

Next, when the operation handle 21 is pulled out, the unit 11 is moved out of the unit storage chamber 1.

Accordingly, the MCC having the UNIT storage structure in which the MCCB handle, the UNIT input handle, and the position switch are integrated according to the present invention can not only turn on / off the switch of the circuit breaker 13 by one handle operation but also the unit accommodation chamber 1. There is an advantage in that the unit 11 can be inserted or removed.

1. Unit Storage Room 3. MCC Class
5. Lower cover 7. Protruding pin
9. Square hole 11. Unit
13. Breaker 15. Spiral Groove
17. Unit pull-out drawer shaft 19. Front door
21. Operation handle 23. Switch on / off means
25. Unit drawing-out means 27. First bracket
29. Through Hole 31. Handle Shaft
33. Second Gear Gear 35. First Gear Gear
37. Breaker moving shaft 39. Third cogwheel gear
41. Rack gear 43. Means of shifting motion
45. Annular Jaw 47. Breaker Control Shaft
49. Insert groove 51. Guide groove
53. Second Bracket 55. Fixed Shaft
57. Fourth Gear Gear 59. Fifth Gear Gear
61. Clutch Bundle 63. Elastic Member
65.Pin 67. Idle
69. Pin fitting 71. Power transmission

Claims (5)

An MCC board 3 equipped with two or more unit storage chambers 1;
A lower cover 5 placed on the bottom of the unit accommodation chamber 1;
Protruding pins 7 protruding from the upper surface of the lower cover 5 in a vertical direction of the lower cover 5;
A rectangular hole 9 is provided at the bottom contacting the protruding pin 7 while being fitted into the unit accommodation chamber 1, and the lower cover 5 and the rail 10 are coupled to each other to form a gap having a predetermined height with the lower cover 5. Left unit 11;
A breaker (13) mounted inside the unit (11) and connecting or disconnecting an electric line each time the switch is turned on or off;
It has a cylindrical shape and is provided with a spiral groove 15 engaged with the protruding pin 7 on the outer circumferential surface thereof, lying in a position facing the square hole 9 inside the unit 11, and one outer circumferential surface thereof with a square hole 9 A unit pull-out shaft 17 exposed out of the unit 11 through;
A front door 19 mounted on the front of the unit 11;
An operation handle 21 mounted to the front door 19;
Switch on / off means for turning on or off a switch provided in the circuit breaker (13) by interlocking two or more gears when the operation handle (21) is rotated in one direction while pressing the operation handle (21);
And unit pull-out means for rotating the unit pull-out shaft 17 in one direction by interlocking two or more gears when the steering wheel 21 is rotated in any direction without pressing the operation handle 21.
When the unit pull-out shaft 17 is rotated in one direction by the unit pull-out means, the protruding pin 7 rides through the spiral groove 15 to leave the unit pull-out shaft 17 or the unit pull-out shaft 17 MCC having a unit accommodation structure in which an MCCB handle, a unit input handle, and a position switch are integrated, wherein the unit 11 exits from the unit accommodation chamber 1 or is fitted into the unit accommodation chamber 1 while being fitted into the unit. .
The method of claim 1,
The switch on / off means comprises: a first bracket (27) erected in the vertical direction of the unit (11) from the bottom surface of the unit (11) disposed between the front door (19) and the unit pull-out shaft (17);
A through hole 29 penetrating the circumferential surface of the first bracket 27 facing the manipulation handle 21;
A handle shaft 31 having one end connected to the operation handle 21 and the other end extending straight into the unit 11 through the through hole 29;
A first tooth gear 35 fixed to the handle shaft 31 and engaged with a second gear gear 33 when the operation handle 21 is pressed and inserted into the unit 11 together with the handle shaft 31;
A second tooth gear 33 which is rotated while being fixed to the first bracket 27 and is disposed on the same vertical line as the through hole 29 in the first bracket 27;
A third tooth gear 39 which is axially fixed to the first bracket 27 facing the breaker 13 via the breaker movable shaft 37 and rotates together with the breaker movable shaft 37;
A tooth gear lying on the bottom surface of the unit 11 in a straight line shape and provided on the upper surface is engaged with the second gear gear 33 and the third gear gear 39, and the second gear gear 33 is in one direction. A rack gear 41 which rotates in the left horizontal direction or the right horizontal direction when rotated to the third gear gear 39;
And movement switching means 43 for switching the breaker movable shaft 37 to linear movement to turn on or off the breaker 13 when the breaker movable shaft 37 is rotated in one direction. MCCB having a UNIT storage structure incorporating an MCCB handle, a UNIT input handle and a position switch.
The method of claim 2,
The switch on / off means includes an annular jaw (45) protruding from the edge of the through hole (29) toward the front door (19) and in the form of a ring;
Rotate when projected in the orthogonal direction of the handle shaft 31 and rotated with the handle shaft 31 from the outer circumferential surface of the handle shaft 31 disposed between the operation handle 21 and the first gear gear 35. A breaker control shaft 47 whose radius is larger than the inner diameter of the annular jaw 45;
An insertion groove 49 cutting one side edge of the annular jaw 45 in the direction of the front door 19 so that the circuit breaker control shaft 47 is fitted when the operation handle 21 is pressed;
And cutting the annular jaw 45 in the circumferential direction of the annular jaw 45 from one end of the insertion groove 49 adjacent to the front door 19 so that the breaker control shaft 47 is fitted. MCCB having a UNIT storage structure in which the MCCB handle, the unit input handle and the position switch are integrated.
The method of claim 2,
The unit draw-out means may include a second bracket 53 extending side by side in the vertical direction of the square hole 9 from one side and the other side of the square hole 9 with the unit pull-out shaft 17 interposed therebetween. ;
A fixed shaft (55) configured to fix the unit pull-out shaft (17) to a second bracket (53) such that the unit pull-out shaft (17) rotates in a shaft;
A fourth gear gear 57 fitted to the fixed shaft 55 and rotated together with the unit drawing-out shaft 17;
A fifth tooth gear 59 that is axially fixed to the second bracket 53 facing the handle shaft 31, meshes with the fourth gear gear 57, and the handle shaft 31 is penetrated;
When the handle shaft 31 is rotated in either direction while being integrally coupled with the fifth gear gear 59, the handle shaft 31 is penetrated, and the operation handle 21 is pressed, it does not engage with the handle shaft 31. A clutch bundle 61 engaged with the handle shaft 31 when the handle shaft 31 is rotated in one direction while being idle, and rotating the fifth tooth gear 59 when the operation handle 21 is not pressed;
And an elastic member (63) fitted to the handle shaft (31) disposed between the first gear (35) and the clutch bundle (61) to elastically contract or expand. MCC with UNIT storing structure which integrated switch.
The method of claim 4, wherein
The handle shaft 31 inserted into the clutch bundle 61 is provided with a pin 65 protruding in the orthogonal direction of the handle shaft 31 from the outer circumferential surface of the handle shaft 31,
The clutch bundle 61 has a cylindrical shape through which the handle shaft 31 penetrates and pins the inside of the clutch bundle 61 in a cylindrical shape at an inner end of the clutch bundle 61 in contact with the fifth gear gear 59. When the rotary shaft 65 is inserted, the idler 67 is provided to allow the handle shaft 31 and the pin 65 to idle in the clutch bundle 61.
The inner rear end of the clutch bundle 61 is provided with a pin fitting portion 69 engaged with the pin 65 so that the power of the handle shaft 31 when the pin fitting portion 69 and the pin 65 are engaged with the clutch bundle is bundled. An MCCB having a unit accommodation structure in which an MCCB handle, a unit input handle, and a position switch are integrated, comprising a power transmission unit 71 for transmitting to 61.

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