JPS5943771Y2 - Central control panel - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a centralized control panel with an improved structure for mounting a control circuit terminal block for connecting control unit side wiring and control cables.

In the centralized control panel, there is a place where the wiring of the built-in control unit is connected to the control cable that is brought in from the outside.

Recent centralized control panels often employ a system in which terminal blocks are used at the above-mentioned connection points.

Even with this method, there are two types of terminal block installation structures: one is placed inside the control unit, and the other is placed near the control unit, but in either structure, the button is pressed when the cable is connected. It is required that the control unit has good workability, workability during maintenance and inspection, and operability when installing and removing the control unit.
At the same time, there was also a need for easy replacement of terminal blocks when changing the control unit.

A conventional terminal block installation structure in a centralized control panel using this method will be explained with reference to FIGS. 1 to 3.

When the central control panel is viewed from the front, the cabinet 1 shown in FIG. 1 has a plurality of unit storage chambers 2 stacked vertically, and a cable processing chamber 3 is provided adjacent to the side thereof.

A control unit is incorporated in the unit storage chamber 2, and all control cables brought in from the outside are connected to the control unit through this cable processing chamber 3.

One of the two types of terminal block installation structures described above is the case of the "A" control unit indicated by the reference numeral 4, and the A" control unit 4 is removably attached to the partition plate 5 at the top of the cabinet 1. The control circuit terminal block 6a is installed inside the "A" control unit 4 and connected to the wiring of the "A" control unit.

The control cable 7a drawn in from the outside is connected to the "A" control unit 4 and the lower partition plate 8 via the cable processing chamber 3.
It passes through the gap between the terminal block 6a and the control circuit terminal block 6a, where it is connected to the wiring on the control unit side.

Another terminal block installation structure is indicated by the symbol 9ゝゝB
[In the case of a control unit, the 1B" control unit 9 is removably attached to the lower partition plate 10, and the wiring 11 on the control unit side is connected to the wiring provided on the side of the 'XB" control unit 9. Plug 1 detachable through port 12
3 to the control circuit terminal 6b.

The plug 13 is connected to the lower partition plate 10 by the plug mounting base 14.
A control circuit terminal block 6b is installed on the back wall of the cabinet 1.

A control cable 7b drawn in from the outside is connected to this control circuit terminal block 6b, and the control cable is connected to the wiring 11 on the control unit side by pressing a button here.

In the conventional structure explained above, in the case of the former, that is, the "A" control unit, the configuration is simple, but because the control cable is drawn into the control unit, workability during cable connection and maintenance inspection is poor, and control Workability when attaching and detaching the unit is poor, and there is a risk that an accident within the control unit will spread to the control cable.

In the case of the latter, that is, the "B" control unit, accidents within the control unit rarely affect the control cables, and the operability when installing and removing the control unit is not bad, but the control circuit terminal block is located relatively deep. Moreover, since a large number of control cables are arranged in the front cable processing room 3, the control cables are easily hidden and cannot be seen, resulting in poor workability during maintenance and inspection.

The disadvantage was that it was difficult to replace the terminal block.

This idea eliminates the above-mentioned drawbacks and has a terminal block installation structure that provides excellent workability when connecting cables, workability during maintenance and inspection, and operability when attaching and detaching units, as well as making it easy to replace the terminal block. The purpose is to provide a centralized control panel.

This purpose, according to the present invention, includes a cabinet including a plurality of unit storage chambers arranged vertically and a cable handling chamber adjacent to the side of the unit storage chamber, and a cable processing chamber installed in the unit storage chamber. In the cable processing chamber, the control line from the control unit connected to the terminal block is connected to the trundle cable brought in from the outside using the terminal block, and the terminal block is attached to the long side of the L-shaped hole. The tip of the side is bent parallel to the entire long side, and a terminal plate with a slit is provided for installation that communicates with the short side and the bent part from this short side, and the short side or the bent part of this terminal plate is connected to the cable. To attach the front frame and terminal board to the front frame of the cabinet located in the processing chamber, use additional screws that pass through the slits and the terminal board L.
Attachment is achieved by means of plate nuts inserted into the shaped bends.

According to this invention, the installation direction of the terminal board is set at 90°.
By changing the terminal block, you can set the terminal block in a suitable position during work and operation, and by inserting the plate nut into the L-shaped bent part of the terminal block, the L-shaped bent part can be used to prevent the plate nut from rotating. By doing so, the mounting screws for fixing the terminal board to the front frame of the cabinet can be operated from the front side of the cabinet.

Examples of this invention will be described below based on the drawings.

The terminal block installation structure according to this invention uses an L-shaped terminal board 15 that is bent as shown in FIG.

A mounting slit 16 is provided in the bent portion of the terminal plate 15, and the position indicated by the broken line 17 indicates the location where the control circuit terminal block is installed.

Reference numeral 18 indicates a front frame of the cabinet 1 to which the terminal plate 15 is attached.The terminal plate 15 is attached to the frame 18 using additional screws 19 and plate nuts 20, and the terminal plate 15 is attached through the slit 16.

Its installation is shown in FIGS. 5 and 6.

Figure 5 shows the mounting position for cable connection, maintenance and inspection, etc., and is a sectional view taken along the line I-I in Figure 1, where 21 is the lower partition plate, and 22 is the control unit. , 23 is a cable processing chamber, and 24 is a right side plate of the cabinet 1.

25 is the wiring on the control unit side, the tip of which is the plug 26
It is connected to the control circuit terminal block 6C via.

The terminal board 15 is installed in such a way that the terminal block 6c is in front of the front of the cabinet, and is attached to the frame 18 with additional screws and plate nuts 20.

The control cables pulled in from the outside are indicated by dashed-dotted lines 7c and 7d.
It is connected to the control circuit terminal block 6c from the position.

In this state, the terminal block 6c is located at the front inside the cable processing chamber 23, making the work easier.

Next, when the central control panel enters the operating state, the terminal plate 15 is rotated 90 degrees from the position shown in FIG. 5 and placed in the position shown in FIG. 6.

To change the mounting position, loosen the mounting screw 19 from the front side of the frame 18, turn the terminal plate 15 by 90 degrees, and then tighten the mounting screw 19 to fix it.

When loosening or tightening the additional screw 19, the plate nut 20 is prevented from rotating by the L-shaped bent portion of the terminal plate 15, so that the mounting screw can be operated from the front side.

In the state shown in Fig. 6, the control circuit terminal block 6c and the control cables 7c and 7d, which were exposed at the front, are connected to the cable processing chamber 2.
3, so there is no problem with the operation of the central control panel.

As is clear from the above explanation, the installation direction of the terminal board should be set at 90°.
By changing the control circuit terminal block, the control circuit terminal block can be set in the most suitable position, improving workability when connecting cables, workability during maintenance and inspection, and operability when attaching and detaching the control unit. It is also easy to replace.

By inserting a plate nut into the L-shaped bent part of the terminal board in the housing and using the L-shaped bent part as a rotation stopper for the plate nut, the operation of the mounting screws that secure the terminal board to the front frame of the cabinet is made easier. This has the advantage that it can be performed from the front side of the cabinet.

[Brief explanation of the drawing]

Figure 1 is a schematic front view of a centralized control panel with a conventional structure, Figures 2 and 3 are perspective views showing the installation of the control circuit terminal block of the centralized control panel with the structure of Figure 1, and Figure 4 is a schematic front view of a centralized control panel with a conventional structure. A perspective view of a terminal board according to an embodiment of the present invention, and FIGS. 5 and 6 are cross-sectional views of essential parts showing the structure of mounting a control circuit terminal block using the terminal board of FIG. 4. 1...Cabinet, 2...Unit storage room, 3, 23---Cable processing room, 6a
, 6b, 6c...control circuit terminal block, 7a, 7b,
7c, 7d... Control cable, 11.25...
...Control unit side wiring, 15...Terminal board.

Claims (1)

[Claims for Utility Model Registration] A cabinet comprising a plurality of unit storage chambers arranged vertically and a cable processing chamber adjacent to the side of the unit storage chamber, and a cabinet built into the unit storage chamber. The control line from the control unit and the control cable drawn in from the outside are connected by a terminal block in the cable processing room. When the terminal block is formed in an L shape and the terminal block is attached to the long side and the tip of the short side is bent parallel to the long side, the installation that communicates with the short side and the bent part bent from this short side is as follows. A terminal board with a slit is provided, and the short side or bent part of this terminal board is attached to the front frame of the cabinet located in the cable handling room. A central control panel characterized in that it is attached by a plate nut inserted into an L-shaped bent part of a plate.