KR870001383Y1 - Switch - Google Patents

Abstract

No content.

Description

Power switch

1 to 7 are schematic front views illustrating the operation.

8 is a control circuit diagram.

9 is a perspective view.

* Explanation of symbols for main parts of the drawings

6: operating lever 11: spring

12: control shaft 13: guide groove

13a, 13b: inclined passage 14: point plate

17,20: spring 18: latch

33,34: movable contact 37,38: fixed contactor on power side

41: fixed contactor on the load side

The present invention relates to a power switching switch for connecting two different power sources, such as a commercial power supply and an emergency power supply or a star connection power supply and a delta connection power supply, to the load side.

Applicant has previously moved the control shaft in the V-shape by moving the control shaft in the approximately V-shaped guide groove to the V-shape in response to oscillation of the operating lever, for example, at the Japanese Patent Office 54-79548 (Japanese Patent Office 55-180242). The switching of the power supply was limited by foldably alternatively folding the fixed contactors on the two different power supply sides with the interlock.

In the above-described proposal of the applicant, the two A and B power supplies can be alternately switched, but both power supplies cannot be kept OFF, and the same power supply as the A power supply is supplied from the A power supply to the A power supply after being turned off. It is not possible to continuously insert into.

Therefore, the present invention solves this problem and provides a power switching switch that can simultaneously turn off both power sources and can be supplied to any power source. In order to solve the above problems, the present invention alternatively closes the two inclined paths of the control shaft in the roughly V-shaped guide groove, and enables the swinging direction of the low swinging point plate to be operated. The control shaft is normally returned to the center of the V-shaped guide groove so that the movable contactor is not in contact with any of the power source fixed contactor and the load side fixed contactor, and the operating lever is rotated so that any power supply is turned on. A latch was installed to automatically retain the operating lever at the position at and the latch was released.

By inclining the point plate in any direction by manual or light operation, closing any one of the inclined passages of the V-shaped guide groove, and rotating the control lever by manual or electric operation in this state, the control shaft will be inclined to any direction of the guide groove. The passage is raised so that the movable contactor connects the arbitrary fixed power side contactor with the load side fixed contactor.

Thus, when it is in the power-on state on any power side, the latch is operated by manual or electric operation to release the operating lever. The operating lever is restored by the force of the spring, and the control shaft comes to the center of the guide groove, and the movable contactor comes to the neutral position.

This obtains the OFF state of both power supplies.

EXAMPLE

The switchgear according to the present invention is composed of an operation mechanism 1, a control mechanism 2, a charger mechanism 3, and a control circuit 44.

The operation mechanism 1, the control mechanism 2, and the charger mechanism 3 are partitioned by partition walls 4 and 5, respectively.

As shown in FIG. 1A, in the operating mechanism 1, the operating lever 6 is supported by the operating shaft 7 arranged between the partition 4 and the frame 42 in the middle portion thereof. Silver is rotatably attached to the iron core (9) of the input coil (C) and the other end is rotatably attached to one end of the connecting link (10).

A pressing spring 11 is fitted between the end of the iron core 9 and the frame 42.

The pressing spring 11 is compressed when the iron core 9 is attracted to the injection coil C, and is restored when the injection coil C is flushed to return the iron core 9 and the operating lever 6 to each other.

One end of the control shaft 12 is supported by the bearing on the other end of the link 10.

The control shaft 12 moves freely through the substantially V-shaped guide groove 13 of the partition 4, and the other end protrudes in the control mechanism part.

Positioned above the guide groove 13, the point plate 14 is freely swinged on the partition wall 4 by a pivot 8. The tip end of the point plate 14 protrudes inside the central upper portion of the guide groove 13 and closes the left and right inclined passages 13a and 13b of the guide groove 13 at the left and right inclination to advance the control shaft 12. Disturbs. One end of the swing lever 15 is rotatably attached to the arm 14a protruding to the side of the point plate 14. The swing lever 15 is rotatably attached to the partition 4 by the pivot 8 in the middle thereof, and the one end of the pull spring 17 is hung on the other end.

The other end of the pulling spring 17 is caught by the partition wall 4 and pulls up one end of the regular swing lever 15 to incline the point plate 14 so that its tip closes the inclined passage 13a of the guide groove. Strength is applied.

Selective coil SC is installed at the lower part of the swing lever 15. At the time of excitation, the swing lever 15 is attracted and pulled down one end side thereof, and the point plate 14 is inclined in the opposite direction, thereby inclining the other side of the guide groove. The passage 13b is closed.

A selector switch LS is installed at an upper portion of the swing lever 15 to detect a rise of one end of the swing lever 15 to switch the contacts LS ₁ and LS ₂ .

Located below one end side of the operating lever 6, the latch plate 18 is rotatably attached to the partition 4 by the spindle 19. The latch plate 18 is urged on the operation lever 6 side by the pressing spring 20 so that one side thereof is always in contact with one end of the operation lever 6 and one end side of the operation lever 6. At this ascend time, the tip engages with this to hold the operating lever 6. One end of the iron core 21 of the trip coil TC is rotatably attached to one side of the latch plate 18 so that the latch plate 18 and the operation lever 6 are engaged by the excitation of the trip coil TC. The alignment is released. On the other side of the middle of the latch plate 18, the movable contact 22 of the control switches AX, BX is attached so as to be rotatable.

As shown in FIG. 1B, in the control mechanism 2, one end of the A power supply side control lever 23 and the B power supply control lever 24 is positioned opposite to each other above the guide groove 13 so that the pivot shaft 25, 26, the pivot is attached to the partition 4 freely, respectively. On the other end side of both control levers 23 and 24, turning holes etc. overlap freely, and the long holes 23a and 24a are formed, respectively.

The control shaft 12 is inserted into the sliding material at positions overlapping the long holes 23a and 24a. Therefore, both control levers 23 and 24 can be selectively rotated according to the movement of the control shaft 12. At the other ends of both control levers 23 and 24, pressing projections 23b and 24b are provided, respectively.

When the pressing projections 23b and 24b are in the downward position, the movable contacts 27 and 28 of the B power supply trip control switch BTS ₁ and BTS ₂ or the A power supply trip control switch ATS ₁ and ATS ₂ are pushed, respectively. Each contact can be opened by lowering it.

One end of the turning arms 29 and 30 is fixed to the rotation shafts 25 and 26 provided between the partition walls 4 and 5 in the charger mechanism 3. The other ends of the swing arms 29 and 30 are connected to the intermediate portions of the movable contacts 33 and 34 by V-shaped connecting pins 31 and 32. The movable contacts 33 and 34 have long holes 33a and 34a at one end and are rotatably supported by the partition walls 5 by the pivots 35 and 36 inserted therein.

The fixed contactors 37 and 38 at the one end of the movable contact 33 and 34 at the A power supply side as the first power supply and the B power supply side as the second power supply are always press-contacted by the pressing springs 39 and 40, respectively. . The stationary contactor 41 on the load side is provided at an intermediate portion of the movable contactors 33 and 34 facing each other, and its tip is contactable when the movable contactors 33 and 34 are inverted.

When the movable contactors 33 and 34 are inverted, one end of the pushing side of the movable contactors 33 and 34 is pushed up by the fixed contactors 37 and 38, and the lever is connected to the middle of the connecting pin extracting part as a point. The tip side is pressed against the load side fixed contactor 41.

The operation of this switchgear with the control circuit diagram of FIG. 8 is demonstrated.

1A, 1B, and 1C, the control shaft 12 is located at the center of the guide groove 13, the movable contacts 33, 34 are in a neutral position, and both of the load-side fixed contacts 41 are located. Not in contact with At this time, as shown in FIG. 8, the contacts LS ₁ and LS ₂ of the selection switch LS are closed to the A side, the control switches AX and BX are also closed, and the trip control switches ATS ₁ , ATS ₂ , BTS ₁ and BTS ₂ ). Are open together.

Closing the A power supply closing switch A from the state shown in FIG. ₁ , the circuit is closed through the control switch AX, the contact switch LS ₁ of the selection switch, the injection coil C, and the contact switch LS ₂ of the selection switch. (C) is a woman.

As shown in FIG. 2, the iron core 9 is attracted by the excitation of the injection coil C, the spring 11 is compressed, and one end of the operating lever 6 is rotated in the counterclockwise direction.

As a result, the control shaft 12 is pushed up, but since one of the inclined passages 13a of the guide groove 13 is closed by the point plate 14, the control shaft 12 is connected to the other inclined passage 13b. Thus rises.

As the control shaft 12 rises, the A power supply side control lever 23 rotates, and the A power supply trip control switch ATS ₁ and ATS ₁ close, and the rotation shaft 25 and the swing arm 29 counterclockwise. It rotates in a rotational direction and inverts the movable contact 33 to connect the A power supply side fixed contactor 37 and the load side fixed contactor 41. Since the latch 18 is applied to the operation lever 6 at the position where the closing operation is completed, the operation lever 6 is supported.

In addition, the same operation is obtained by rotating the operation shaft 7 by manual operation instead of the electric operation by the input coil C. FIG.

When the A power supply side trip switch AT is turned on from the state of FIG. 2, the trip switch AT, the trip control switch ATS ₁ , the trip coil TC, and the trip control switch ATS _{2 are} shown in FIG. 8. The circuit is closed, and the trip coil TC is excited. When the trip coil TC is excited as shown in FIG. 3, the iron core 21 is attracted, the latch 18 is released from the operating lever 6, the operating lever 6 is released, and the shaft force of the spring 8 is released. Rotate clockwise by to restore.

As a result, the control switches AX and BX are closed.

The control shaft 12 rotates and restores the A power side control lever 23 clockwise in order to pull down, and the A power side trip control switch ATS ₁ and ATS ₂ opens, and the rotation arm 29 also rotates and rotates clockwise. The movable contact 33 stands up to cut off the A power supply. In addition, the same breaking operation is obtained by releasing the operating lever 6 by moving the latch 18 by manual operation instead of the electric operation by the trip coil TC.

From the state of FIG. 3, this time, when the power supply is turned on in the B power supply side, in FIG. 8, when the B power supply power supply switch B is closed, the circuit goes through the input switch B, the control switch BX, and the selection coil SC. It closes and the selection coil (SC) is excited.

Then, as shown in FIG. 4, the swing lever 15 is attracted to the selection coil SC, swings in the clockwise direction, and the contacts LS ₁ and LS ₂ of the selection switch LS are switched to the B side, and the point plate 14 is moved. Swings in the counterclockwise direction so that the tip closes the inclined passage 13b on the other side of the guide groove 13.

At the same time, in Fig. 8, the circuit is closed and the input coil is closed via the input switch B, the control switch BX, the contact switch LS ₁ of the selection switch, the input coil C, and the contact LS ₂ of the selection switch. (C) is a woman.

Then, as shown in FIG. 5, the iron core 9 is attracted and the control shaft 12 is pushed up, but since the inclined passage 13b of one side of the guide groove 13 is closed by the point plate 14, the control The shaft 12 ascends the other inclined passage 13a.

Then, as shown in FIG. 5B, this time, the B power supply side control lever 24 rotates in the clockwise direction, and the B power supply trip control switch BTS ₁ and BTS ₂ are closed, and the movable contact 34 is inverted to fix the B power supply side as shown in FIG. 5C. The contactor 38 and the load side fixed contactor 41 are connected.

When the closing operation of the power supply side is completed, as shown in FIG. 6, the latch 18 holds the operation lever 6 and the control switch AX and BX are opened. It rotates counterclockwise by the axial force of and restores it, and the point plate 14 is rotated clockwise, and the one side inclination path 3a of the guide groove 13 is closed again.

At the same time, the contacts LS ₁ and LS ₂ of the selector switch LS are switched to the A axis.

B When the input to the power source side is performed by manual operation, the swing lever 15 is pushed down from the outside, and the operation shaft 7 is opened with the point plate 14 closed with the inclined passage 13b of the guide groove 13. Rotate.

When the tripping position BT of the B power supply side is closed from the state of FIG. 6, the circuit is connected to the circuit via the trip switch BT, the trip control switch BTS ₁ , the trip coil TC, and the trip control switch BTS ₂ in FIG. 8. Closes and the trip coil TC is excited.

Then, the latch 18 is removed as shown in FIG. 7A, and the operation lever 6 is restored. As shown in FIG. 7B, the control lever 24 of the B power supply side is rotated and restored in the counterclockwise direction. As shown in FIG. 7C, the movable contact 34 stands up. Power supply B is cut off.

As described above, the present invention pivots by a manual or electric operation and is freely restored by the spring 11, and a guide groove 13 having a substantially V-shape in accordance with the swing of the operating lever 6. Control shaft 12 located in the center of the guide groove 13 in the restoring position of the operating lever 6 and interlocking with the control shaft 12 When it is at the upper end of the inclined passage (13a, 13b) of the left or right of the guide groove 13, the first or second power supply side fixed contact (37, 38) and the load side fixed contact (41), respectively, In addition, when the control shaft 12 is in the center position of the guide groove 13, the tip is protruded inside the center upper portion of the movable contact 33 and 34 and the guide groove 13 in the neutral position, and the guide groove 13 Oscillation by manual or power supply operation to selectively close the inclined passage on the left or right side of the control shaft 12 in It is possible to force the point plate 14, which is normally applied by the spring 17, to close one of the inclined passages 13a of the guide groove 13, and to normally contact the operating lever 6. It is configured to have a latch 18 which is applied to engage with this near the turning end of the operating lever 6 to prevent its restoration and release the operating lever 6 by manual or electric operation. By the position of the point plate 14, arbitrary power supply side fixed contactors 37 and 38 and the load side fixed contactor 41 can be connected. Therefore, it is also possible to turn off one side of the power supply and then turn it back on the coin source side, so that it can be used as a switch for switching between star power supply and delta connection power, in addition to switching between emergency power supply and commercial power supply.

In addition, when the power supply is in one of the power supply states, the latch 18 is applied to the operation lever 6, so that the operation of the power supply on the other power supply side cannot be performed at the same time, and the mixing of the power supply is prevented.

When the latch 18 is removed and the operation lever 6 is released, the movable contacts 33 and 34 are placed in the neutral position, and the off state of both power supplies is obtained.

Claims (1)

The inclined passages 13a and 13b of the operating lever 6 which rotates by manual or electric operation and is free to be restored by elastic force, and the substantially V-shaped guide groove 13 in accordance with the swinging movement of the operating lever 6. Control shaft 12 located at the center of the guide groove 13 at the restoring position of the operating lever 6 and the guide groove 13 in conjunction with the control shaft 12. When it is at the upper end of the inclined passages 13a and 13b on the left or right side of the first or second power supply side fixed contactors 37 and 38 and the load side fixed contactor 41, respectively, the control shaft 12 The control shaft 12 in the guide groove 13 is formed by protruding the tip of the movable contactors 33 and 34 in the neutral position and the upper portion of the center upper portion of the guide groove 13 when the guide groove 13 is in the center position. Rotation is free by manual or electric operation so as to alternatively close the inclined passages (13a, 13b) on the left or right side of A force is applied to the point plate 14, which is applied by an elastic force to close one of the inclined passages of the inner groove 13, and is always in contact with the operation lever 6, so that the operation lever 6 And a latch (18) which engages with this near the turning end and prevents its restoration and releases the operating lever (6) by manual or electric operation.