JPH047602Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a control center in which plug-in type control units are stacked and housed in multiple stages.

[Prior art]

Normally, most control centers are double-sided with control units housed in the front and back, and have a vertical bus bar section in the center where vertical busbars for distributing power to each control unit are installed. There are two unit compartments that house control units in a multi-tiered manner sandwiched between them, and a vertical wire compartment adjacent to the side of the unit compartment. Further, a horizontal bus bar section and a cable processing section are provided at the top and bottom of the box constituting each section, respectively.

1 in FIG. 1 shows an embodiment of a conventional control unit housed in the control center. 2 is a U consisting of a left side plate 2A, a right side plate 2B, and a back plate 2C.
It is a unit case of the shape. 3 is a front horizontal member, and 4 is a mounting rail. Reference numeral 6 indicates a wiring sheath breaker, 7 indicates an electromagnetic switch, and 5 indicates a mounting plate to which these are attached. 11 is a control transformer installed on the back side of the unit, 12 is placed on the back side of the unit case,
It is a plug-in connection device that plugs into the vertical busbar.
In other conventional examples, the mounting plate 5 is not provided and the electrical equipment is mounted on the unit case back plate 2C.

When the conventional control unit 1 is pulled out from the control center box or when the door of the empty unit room is opened, the vertical busbar is exposed, which is dangerous. Therefore, in the past, a resin barrier was provided between the back of the unit case and the vertical generatrix. One example of this is shown in Japanese Utility Model Publication No. 52-56423. In another embodiment, the entire vertical bus bar is sandwiched in a sandwich-like manner by a resin case to also support the vertical bus bar. All of the above methods require high quality resin products, which are expensive and uneconomical.

Further, a cable is led into the control unit 1 from the right side plate 2B to the electromagnetic switch 7 and the terminal block inside the unit. A notch 2D is provided to prevent the rising end of the cable from getting caught on the back plate 2C when the unit is pulled out. However, there were cases where the size of the notch was insufficient depending on the size and number of cables.

In addition, the control center box has the drawback that reinforcing horizontal frames cannot be provided on the front and back sides of the box to prevent attachment and detachment of the control unit, and its strength in the left and right directions is weak.

[Summary of the idea]

This invention was made in view of the above circumstances, and attempts to eliminate the various drawbacks of the conventional one by using a new unit case and a new configuration of the vertical bus bar section.

[Example of idea]

Hereinafter, one embodiment of this invention will be explained in detail with reference to FIGS. 2 to 6. In the figure, reference numeral 100 denotes a control center according to this invention, which is generally arranged in a large number in a row. 101 is a unit room 201,
This is a unit section on the front side consisting of 202, 203, and 204. Each unit room above has two doors.
01A, 202A, 203A, and 204A. 102 is a vertical wire section, 103 is a horizontal bus bar section, and 104 is a cable processing section. Each of the compartments is also provided with doors 102A, 103A, and 104A, respectively.

The control center 100 box body has wall plates 20 arranged at the corners, and intermediate columns 21 between the front and rear unit sections 101 and the vertical wire sections 102.
will be placed. They are connected at the upper and lower ends by a horizontal frame 23. The wall plate 20 consists of a U-shaped support leg 20A, an intermediate wall 20B, and an L-shaped support leg 20C. 22 is a support plate extending from one L-shaped support leg 20C, thereby separating the vertical wire section 102 and the vertical bus bar section 105.

The unit compartment 101 is divided into the respective unit chambers by a partition plate 24. As shown in FIG. The front and rear end surfaces of the partition plate 24 are bent upwards, and each has a standing leg 2.
4A and 24B, and both ends thereof extend downward to form a J-shaped guide rail 24C. The front part of the partition plate 24 is U-shaped using the guide rail 24C.
It is fixed to the L-shaped support leg 20A and the intermediate column 21, and an engagement piece 24D formed protruding from the guide rail 24C at the rear is inserted into and supported by the L-shaped support leg 20C and the support plate 22.

25 is a back plate made of steel plate. The above back plate 25
is arranged behind the rising leg 24B of the partition plate, and is composed of a flat plate having a width almost equal to the height and width of the unit section 101, and the left and right ends thereof are L-shaped support legs 20C and support plates 22, respectively. It is fixed by a screw member 27.

The rear plate 25 is provided with an opening 25A through which the projection housing 12B of the plug-in connection device 12 passes. The openings are provided at vertical intervals equal to the reference height of the control unit. This means that the projecting housing 12B of the plug-in connection device 12 can be penetrated even in combinations of control units with different heights. A blind cover 28 is attached to the unused opening 5A with a clip 29 or the like.

A back plate 25 separates the unit compartment 101 from the vertical busbar compartment 105. 40 is the cross section Z
It has a front leg 40B and a rear leg 40C extending in opposite directions from both ends of an intermediate part 40A parallel to the back plate, and is fixed to the L-shaped support leg 20C by an insulating support device (not shown). .

A typical control unit 41 housed in the control center is shown in FIG. This unit case has side plates 14 and 15 consisting of left and right flat plates.
It consists only of Reference numeral 3 denotes a front horizontal member, on which a latch device (not shown) is disposed, and is also used as a drawer handle. 4 is a mounting rail arranged above the side plates 14 and 15; 5 is a wiring sheath disconnector 6;
This is a mounting plate on which electrical equipment such as the electromagnetic switch 7, the terminal block 13 (FIG. 3), and the control transformer 11 are mounted on the back. Mounted on the wiring sheath disconnector 6 is an operating handle device 8 and a control panel 9 integrally formed therewith to which switches 10 are attached. However, to simplify the drawing, the mechanical part of the operating handle device is omitted. Reference numeral 16 denotes a rear transverse member with an L-shaped cross section, on which the plug connection device 12 is attached.
The plug connection device 12 has a three-protrusion housing 12B.
Each has a built-in U-shaped contact 12A, and is connected to a wiring sheath and disconnector via a lead wire 12C. The side plates 14 and 15 are the horizontal members 3 and 16
and are connected by a mounting plate 5. Also side plate 1
5 is provided with a notch 15A for pulling in the cable.

The state in which the unit 41 is housed in the unit chamber 203 is shown in FIGS. 3 and 4.
The projection housing 12B of the plug-in connection device passes through the opening 25A in the back plate and contacts 12A therein.
is connected to the vertical bus bar 40 in a plug-in manner. In addition, the operation handle 8 and control panel 9 are connected to the unit door 20.
It protrudes to the outside from the opening 203B of 3A. The rear ends of the side plates 14 and 15 are L-shaped support legs 20C,
Abutting the support plate 22, the side plate 15 separates the unit chamber 203 from the vertical wire section. Since the mounting plate 5 is located forward of the rear ends of the side plates 14 and 15, the head of the screw member 27 and the blind cover 28 do not become a hindrance. Further, the space between the back plate 25 and the mounting plate 5 can be used as a wiring space or a device space that does not require operation.

[Effect of idea]

The control center according to this invention configured as described above has many features as follows.

(1) Since the above-mentioned back plate is disposed at the same depth as the back side of the conventional unit case, a sufficient insulation distance from the vertical bus bar is secured, and it can be made of steel plate. Therefore, it is extremely economical compared to conventional resin barriers and busbar sandwich covers.

(2) Since the unit compartment and the vertical busbar compartment are separated by a steel back plate, even if an arc occurs in either of them, the fire will not spread and cause an accident, and the insulation will not deteriorate due to the arc. do not have.

(3) Since the unit case does not have a back plate, the rising end of the cable pulled in from the side plate notch 15A does not get caught, making it easy to pull out the unit.

(4) Since the unit can be directly connected to the front and back surfaces of the mounting plate 5 when the unit is pulled out (Fig. 6), replacement, maintenance, and wiring of surface-mounted equipment such as control transformers are extremely easy.

(5) The back plate can be used as a reinforcing material for the box by increasing the number of fixing points, so it can be used as a control center for ships and nuclear power plants that require economical vibration resistance and earthquake resistance. It is.

(6) Since the back plate 5 is provided with openings 25A for plug-in connection devices for each standard height dimension of the units, it is possible to accommodate combinations of control units of various heights and changes in the arrangement of control units. can.

[Brief explanation of the drawing]

Fig. 1 is a perspective view from the back showing an example of a conventional control unit housed in a conventional control center, Fig. 2 is a perspective view of a control center according to the present invention, and Fig. 3 is the - portion in Fig. 2. 4 is a partial horizontal sectional view of FIG. 3, FIG. 5 is a front view of the unit room shown in FIG. 1 with the door open, and FIG. 6 corresponds to FIG. 1. FIG. 1 is a perspective view showing an example of a control unit of the present invention. In the figure, 5 is a mounting plate, 12 is a plug connection device, 1
4 and 15 are side plates, 16 is a rear horizontal member, 20 is a wall plate,
24 is a partition plate, 25 is a back plate, 27 is a screw member,
28 is a blind cover, 40 is a vertical busbar, 101 is a unit section, 102 is a vertical wire section, and 105 is a vertical busbar section. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of Claim for Utility Model Registration] A control comprising a vertical busbar section in the center of the box, unit sections arranged before and after this vertical busbar section, and vertical electric wire sections arranged on the sides of this unit section. In the center, the unit compartments form a plurality of unit rooms in the vertical direction using partition plates, and a plug-in type control unit is housed in this unit room. The partition plate accommodates various control units having various heights, and on the rear surface of the partition plate extends almost the entire surface between the upper and lower ends and left and right ends of the unit compartment, and partitions the unit compartment and the vertical bus bar compartment. A plurality of openings are provided in the back plate for each reference height of the control unit, through which the plug connection devices of the control unit pass, and the control unit has a plurality of openings through which the plug connection devices of the control unit pass. It consists of a horizontal member to which the control unit is attached, a mounting plate to which the electrical equipment is attached, and left and right side plates connected by these, and the rear end of this side plate supports the above-mentioned back plate or it at the final storage position of the control unit. A control center that comes into contact with the support plate of the control center box.