JP2000037007A - Interlock device of drawer-type electric apparatus unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interlock device of a drawer-type electric apparatus which facilitates the adjustment between the interlock of the drawer-type electric apparatus unit and the interlock of the switch of the drawer-type electric apparatus unit. SOLUTION: An interlock device has the interlock 9 of a drawer-type electric apparatus unit 4 by which the interlock pin 10 of the drawer-type electric apparatus unit 4 housed in a switchboard 1 is retained with the interlock plate 13 of the switchboard 1 and the interlock 16 of a switch 7 by which the interlock pin of the switch 7 of the drawer-type electric apparatus unit 4 is retained with the interlock plate of the switchboard. Further, an electromagnet 18 with a movable core 19 which operates the switch 7, an operation arm 21 which is integrally interlocked with the interlock pin 10 of the drawer-type electric apparatus unit 4 and a C-shaped interlock lever 22 whose one end is rotatably attached to the operation arm 21 and whose other end is retained by the end surface of the movable core 19 and made to enter a space between a fixed core 20 and the movable core 19 are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlock device for a drawer type electric equipment unit equipped with a switch housed and used in a switchboard.

[0002]

2. Description of the Related Art A conventional interlock device for a drawer-type electric equipment unit is configured as shown in FIGS. In the figure, reference numeral 50 denotes a switchboard.
A housing 51 is provided on the inner rear side. A power bus (not shown) is provided in the housing 51, and a power terminal 52 connected to the power bus is mounted. 50 a is a door of the switchboard 50. Reference numeral 53 denotes a drawer-type electric device unit, and a switch 55 is attached to a cart 55 having wheels 54.
6 is installed. Reference numeral 57 denotes a plug attached to the switch 56, which is configured to engage with the power supply terminal 52 of the housing 51 and supply electricity to the drawer-type electric device unit 53 on which the switch 56 and the like are mounted. Reference numeral 58 denotes an interlock of the drawer-type electric device unit, which is attached to the drawer-type electric device unit 53 and pressed downward by a spring (not shown).
And an interlock plate 60 disposed on the bottom plate of the switchboard 50 in the insertion direction of the drawer-type electric device unit 53. The interlock plate 60
An open-circuit position hole 61 provided at a position corresponding to the open position of the drawer-type electric device unit 53 and a close-circuit position hole 62 provided at a position corresponding to the close position of the drawer-type electric device unit 53 are provided on the plate surface. I have. 63 is an interlock release lever attached to the first interlock pin 59. Reference numeral 64 denotes an interlock of a switch 56. One end of an interlock lever 66 is attached to an operation shaft 65 of the switch 56, and a second interlock pin 67 is fixed to the other end. The second interlock pin 67 is connected to a switchboard. The guide rail 68 attached to 50 is configured to enter the closing holes 69, 69.
Next, the operation of the interlock device of the drawer-type electric device unit will be described. FIG. 6 shows a state in which the drawer-type electric device unit 53 is inserted into the switchboard 50 at the open circuit position. When the drawer-type electric device unit 53 is inserted into the switchboard 50, the first
The interlock pin 59 is engaged with the opening position hole 61 of the interlock plate 60, and the draw-out type unit 5
3 reaches the open position, and the interlock 58 of the drawer type electric device unit is engaged. In this state, when a plug (not shown) of the control circuit of the drawer-type electric device unit 53 is connected,
The control circuit of the drawer-type electric device unit 53 enables the switch 56 to be opened and closed. Since the plug 57 of the drawer-type electric device unit 53 is not connected to the power supply terminal 52 of the housing 51, the main circuit is open. A switch 56 mounted on the drawer-type electric device unit 53 at this open position
By operating a test input operation switch (not shown) attached to the door 50a or the like of the switchboard 50, the switch 56 opens and closes. When the switch 56 is closed, the second interlock pin 67 of the switch 56 is engaged with the closing hole 69 of the guide rail 68 as shown in FIG. In this state, the drawer-type electric device unit 5
The first interlock pin 58 of the interlock 59 of the draw-out type electric device unit is operated by operating the interlock release lever 63 attached to the interlock plate 60 in the open position hole 6 of the interlock plate 60.
Even if the user attempts to insert the drawer-type electric device unit 53 by disengaging the drawer-type electric device unit 53, the movement of the drawer-type electric device unit 53 is prevented. The drawer-type electric device unit 53 at this open position
The operation of the electric circuit or the switch 56 is tested to confirm the operation. When the test of the draw-out type electric device unit 53 is completed and the switch 56 is opened, the second interlock pin 67 attached to the interlock lever 66 attached to the operation shaft 65 comes out of the closing hole 69 of the guide rail 68. The switch interlock 64 is released. When the switch interlock 64 is released, the drawer-type electric device unit 53 is released.
Can be moved. Further, the first interlock pin 59 is disengaged from the opening position hole 61 of the interlock plate 60 by operating the interlock release lever 63 attached to the drawer-type electric device unit 53 to thereby pull out the drawer-type electric device. When the unit 53 is pushed in, the drawer-type electric device unit 53 shown in FIG. 8 reaches the closed position, the first interlock pin 59 of the drawer-type electric device unit 53 enters the closed position hole 62 of the interlock plate, and the drawer-type electric device The interlock 58 of the device unit is engaged. When the switch 56 is closed in a state where the drawer-type electric device unit 53 is in the closed position, the second interlock is integrally formed with the interlock lever 66 attached to the operation shaft 65 of the switch 56 as shown in FIG. The pin 67 operates to engage with the closing hole 69 of the guide rail 68, and the switch 56 is closed, and the switch interlock 64 is engaged. In this state, the interlock release lever 63
Even if the first interlock pin 59 is removed from the interlock plate 60 to release the interlock 58 of the drawer-type electric device unit, the switch interlock of the switch 56 mounted on the drawer-type electric device unit 53 is lifted. Since the lock 64 is locked, the drawer-type electric device unit 53 is connected to the switchboard 5.
It cannot be drawn from zero.

[0003]

However, the conventional interlocking device for a drawer-type electric device unit includes an interlock and a drawer for a drawer-type electric device unit that is locked at an open position or a closed position of the drawer-type electric device unit 53. Since the interlock of the switch 56 mounted on the electric machine unit 53 is separated from the interlock, the adjustment of both interlocks is complicated, and there is a problem that the number of components increases. Therefore, an object of the present invention is to provide an interlock device for a drawer-type electric device unit in which the number of components is reduced and adjustment between the interlock of the drawer-type electric device unit and the interlock of the switch is simplified. I do.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a drawer-type electric equipment unit housed in a switchboard, a switch mounted on the drawer-type electric equipment unit, and the drawer-type electric equipment. An interlock of the drawer-type electric device unit for locking an interlock pin mounted on the device unit to an interlock plate mounted on the switchboard, and an interlock interlocking with a switching path of a switch mounted on the drawer-type electric device unit. An interlock device for a drawer-type electric device unit including a switch interlock for locking a lock pin in a closing hole of a guide rail of a switchboard, wherein an electromagnet having a movable iron core for operating the switch; An operation arm that is attached to an interlock pin of the electric device unit and is integrally interlocked with the operation arm; one end is attached to the operation arm so as to be rotatable; And a interlock lever C-shaped and to enter the space between the fixed iron core and the movable iron core engaged or electromagnets on the end face of the dynamic core.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1A and 1B show an embodiment of the present invention, wherein FIG. 1A is a side view of a switchboard housing a drawer-type electric device unit, and FIG. 1B is an enlarged view of a main part. 2 to 4 are enlarged views of a main part of a drawer-type electric device unit showing an embodiment of the present invention. In the figure, reference numeral 1 denotes a switchboard, and a housing 2 is provided on the inner side of the switchboard 1. A power bus (not shown) is provided in the housing 2, and a power terminal 3 connected to the power bus is mounted. Reference numeral 4 denotes a drawer type electric device unit, and a switch 6 is mounted on a truck 6 having wheels 5. Reference numeral 8 denotes a plug attached to the switch 7, which is configured to engage the power supply terminal 3 of the housing 2 and supply electricity to the switch 7. Reference numeral 9 denotes an interlock for the draw-out type electric equipment unit, which is provided with an interlock pin 10 which is supported on a holder 11 attached to the draw-out type electric equipment unit 4 so as to be able to slide up and down. Is configured to engage with an interlock plate 13 arranged on the bottom plate of the drawer-type electric device unit 4 in the insertion direction. A spring 12 is mounted on the holder 11 between the upper wall inside the holder 11 and the collar of the interlock pin 10 so that the interlock pin 10 can be operated downward. The interlock plate 13
An open position hole 14 provided at a position corresponding to the open position of the drawer-type electric device unit 4 and a close position hole 15 provided at a position corresponding to the close position of the drawer-type electric device unit 4 are provided on the upper surface. I have. Reference numeral 16 denotes a switch interlock. The switch interlock 16 is configured as follows. One end of a movable core 19 of an electromagnet 18 is attached to an operation shaft 17 for operating a movable electrode (not shown) of the switch 7 mounted on the draw-out type electric device unit 4.
Is opposed to the fixed iron core 20 of the electromagnet 18.
An operation arm 21 integrally formed with the interlock 9 is attached to the interlock 9. One end is attached to the operation arm 21 so as to be rotatable by a pin 23, and the other end is
When the electromagnet 18 is opened, the C-shaped interlock lever 22 is inserted into the gap between the fixed iron core 20 and the movable iron core 19 when the electromagnet 18 is opened. . Reference numeral 24 denotes an interlock release lever attached to the interlock pin 10, and reference numeral 25 denotes a stopper for the movable iron core 19. The operation of the interlock device for a drawer-type electric device unit configured as described above will be described. FIG. 1A shows a state in which a drawer-type electric device unit is inserted into a switchboard at an open circuit position. When the drawer-type electric device unit 4 is inserted into the switchboard 1, the interlock pin 10 attached to the drawer-type electric device unit 4 slides on the interlock plate 13 to enlarge the main part of FIG. As shown in FIG.
When the interlock pin 10 is engaged with the drawer 4, the drawer-type electric device unit reaches the open position, and the interlock 9 of the drawer-type electric device unit is engaged. In this state, when a plug (not shown) of the control circuit of the drawer-type electric device unit 4 is connected, the control circuit of the drawer-type electric device unit 4 enables the switching operation of the switch 7. Since the plug 8 of the drawer-type electric device unit 4 is not connected to the power supply terminal 3 of the housing 2, the main circuit is open. When the switch 7 mounted on the drawer-type electric device unit 4 in the open position is operated by a test input operation switch (not shown) attached to the door 1a or the like of the switchboard 1, the switch 7 opens and closes. When the switch 7 is closed, the movable core 19 of the electromagnet 18 is attracted to the fixed core 20 as shown in FIG. When the interlock release lever 24 is lifted from this state, the interlock lever 22 rotates clockwise about the pin 23, and the end of the interlock lever 22 is locked to the end of the movable iron core 19, and The rotation of the lock lever 22 is prevented, and the interlock pin 10 cannot escape from the open position hole 14 of the interlock plate 13. Therefore, the movement of the drawer-type electric device unit 4 is prevented. The operation of the electric circuit of the drawer-type electric equipment unit 4 or the operation of the switch 7 at the open position is checked by confirming the operation. When the test of the draw-out type electric device unit 4 is completed and the switch 7 is opened, the movable iron core 19 attached to the operation shaft 17 rotates counterclockwise to abut the stopper 25 and stops at the open position. When the interlock release lever 24 is lifted with the movable iron core 19 stopped at the open position, the interlock lever 22 attached to the operation arm 21 of the interlock 9 rotates to move the end of the interlock lever 22 to the electromagnet 18. The interlock pin 10 moves upward due to the rotation of the interlock lever 22 and is disengaged from the open position hole 14 of the interlock plate 13 by the rotation of the interlock lever 22. The lock 9 is released. Therefore, the drawer-type electric device unit 4 is in a movable state. From this state, the drawer-type electric device unit 4
Is pushed in, as shown in FIG.
Slides on the upper surface of the interlock plate 13, the interlock pin 10 enters the closed position hole 15 of the interlock plate 13, and the drawer-type electric device unit 4 stops at the closed position, and the interlock of the drawer-type electric device unit is stopped. It costs nine. When the drawer-type electric device unit 4 comes to the closed position, the plug 8 of the drawer-type electric device unit 4 is fitted to the power supply terminal 3 of the housing 2 to supply power to the drawer-type electric device unit 4. When the switch 7 of the drawer-type electric device unit 4 reaching this closed position is closed, the movable core 19 of the electromagnet 18 is fixed to the fixed core 20.
And is rotated clockwise about the operation shaft 17 as a fulcrum.
When the interlock release lever 24 is lifted from this state, the interlock lever 22 rotates clockwise about the pin 23, and the end of the interlock lever 22 comes into contact with the end of the movable iron core 19, and the interlock is released. The rotation of the lever 22 is prevented, and the interlock pin 10 is
3 cannot be pulled out from the closed position hole 15. Therefore, the drawer-type electric device unit 4 cannot be pulled out. As described above, according to the present invention, the interlock of the switch and the interlock of the drawer-type electric device unit are linked, so that the adjustment of the interlock is simplified and the number of components is reduced.

[0006]

As described above, according to the present invention, it is possible to reduce the number of components and to easily adjust the interlock of the drawer-type electric equipment unit and the interlock of the switch mounted on the drawer-type electric equipment unit. Can be

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment of the present invention, in which FIG. 1A is a side view of a switchboard housing a drawer-type electric device unit, and FIG.
FIG. 4 is an enlarged view of a main part when a drawer-type electric device unit is inserted into an open circuit position.

FIG. 2 is an enlarged view of a main part when a switch of the drawer-type electric device unit of FIG. 1 is closed.

FIG. 3 is an enlarged view of a main part when a drawer-type electric device unit according to an embodiment of the present invention is inserted into a closed position.

FIG. 4 is an enlarged view of a main part when a switch of the drawer-type electric device unit of FIG. 3 is closed.

FIG. 5 is a side view of a switchboard housing a drawer-type electric device unit of the related art.

FIG. 6 is an enlarged view of a main part when a conventional drawer-type electric device unit is inserted into an open circuit position.

7 is an enlarged view of a main part when the switch of the drawer-type electric device unit of FIG. 6 is closed.

FIG. 8 is an enlarged view of a main part when a conventional drawer-type electric device unit is inserted into a closed position.

FIG. 9 is an enlarged view of a main part when the switch of the drawer-type electric device unit of FIG. 8 is closed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 switchboard, 1a door, 2 housing, 3 power terminal, 4 drawer type electric equipment unit, 5 wheels,
6 Cart, 7 Switch, 8 Plug, 9 Interlock of draw-out type electrical equipment unit, 10 Interlock pin, 11 Holder, 12 Spring, 13 Interlock plate, 14 Opening position hole, 15 Closing position hole, 1
6 Interlock of switch, 17 Operation axis, 18
Electromagnet, 19 movable iron core, 20 fixed iron core, 21
Operation arm, 22 interlock lever, 23 pin, 2
4 Interlock release lever, 25 stopper

Claims (1)

[Claims] A drawer-type electric device unit housed in a switchboard, a switch mounted on the drawer-type electric device unit, and an interlock having an interlock pin mounted on the drawer-type electric device unit mounted on the switchboard. Opening and closing the interlock of the drawer-type electric device unit engaged with the plate and the interlock pin interlocking with the open / close path of the switch mounted on the drawer-type electric device unit in the closing hole of the interlock plate of the switchboard An interlock device for a drawer-type electric device unit provided with an interlock of a switch, comprising: an electromagnet having a movable iron core for operating the switch; and an interlocking operation integrally attached to an interlock pin of the drawer-type electric device unit. Arm, one end of which is rotatably attached to the operation arm, and the other end of which is engaged with an end face of the movable core or a fixed core of an electromagnet. An interlock device for a drawer-type electric device unit, comprising: a C-shaped interlock lever adapted to enter a space between the movable iron core.