JPH09289710A - Switchboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To see that the accommodation space of an electric apparatus within a switchboard is not limited, by reducing the constituent parts of the accommodation duct to accommodate a signal cable thereby simplifying the constitution. SOLUTION: A switchboard, where a unit mounted with an electric apparatus is inserted into each unit room 6 made by partitioning the interior of a switchboard and the signal line 13 from the unit is accommodated in the accommodation duct connected to an earth bar 11, is equipped with a side plate 4, an accommodation duct, an earth line 13, and a signal line 13, and the side plate 4 constituted by bending the flank of a thin steel plate into U shape, and the accommodation duct is composed of the bend 4a of the side plate and a protective cover 7 which covers this bend 4a and is attached to this bend 4a through a bush 8 of insulating material, and for the earth line 12, its one end is connected to the earth bar 11 and the other end is connected to the protective cover 7, and the signal line 13 is connected to the electric apparatus of the unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchboard having a storage duct for storing a signal line from an electric device stored in the switchboard.

[0002]

2. Description of the Related Art A conventional switchboard is shown in FIGS. In the figure, reference numeral 15 is a frame body of a switchboard, which is composed of a bottom plate 16, a ceiling frame 17, and a side plate 18.
Reference numeral 8 is a bent portion 1 formed by bending the side portion of the thin steel plate inward.
8a are provided. A partition wall 19 is attached in the vertical direction inside the frame body 17, and is divided into a plurality of unit chambers 20 for accommodating units in which electric devices are mounted. Reference numeral 21 is a supporting member fixed to the bent portion 18a of the side plate 18,
Reference numeral 22 denotes a case of a storage duct made of a conductive material, which is supported on the support metal 21 via a bush 23 made of an insulating material. A branch connector 24 is provided in the case and is covered with a cover 25. Reference numeral 26 is an earth bar attached to the upper part of the switchboard. Reference numeral 27 is a ground wire, one end of which is connected to the ground bar 26 and the other end of which is connected to the case 22 to connect the storage duct to a weak-electricity ground wire insulated from the board side ground. 28 is a signal line whose one end is connected to the electric equipment of the unit, and the other end is connected to the electric equipment in the adjacent switchboard by being housed in the housing duct via the branching connector 24. In the switchboard configured as described above, the unit is inserted and stored in the portion indicated by the alternate long and short dash line in FIG.

[0003]

However, the conventional switchboard has the following problems. (1) A support metal 21 must be attached to the side plate 18 in the switchboard, and the storage duct must be supported by the support metal 21 via a bush 23 of an insulating material, which increases the number of parts and complicates the configuration. (2) The electric device must be stored in the range indicated by the alternate long and short dash line, and the storage space for the electric device in the panel is restricted. It is an object of the present invention to reduce the number of components of a storage duct that stores a signal line, simplify the configuration, expand the storage space of electrical equipment in a switchboard, and improve storage efficiency.

[0004]

In order to solve the above problems, the present invention inserts a unit equipped with an electric device into a unit room which divides a switchboard and connects a signal line from the unit to an earth bar. In a switchboard housed in a storage duct, a side plate, a storage duct, a ground wire, and a signal line are provided, the side plate is formed by bending a side portion of a thin steel plate into a U shape, and the storage duct is It is composed of a bent portion of the side plate and a protective cover that covers the bent portion and is attached to the bent portion via a bush of an insulating material, and the ground wire has one end connected to the ground bar and the other end connected to the protective cover, The signal line is connected to an electric device of the unit and is housed in the housing duct.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a front view of a switchboard showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is an enlarged sectional view of a main part. In the figure, reference numeral 1 denotes a frame body of a switchboard, which is composed of a bottom plate 2, a ceiling frame 3 and side plates 4, and the side plate 4 is provided with a bent portion 4a formed by bending a side portion of a thin steel plate inward. A partition wall 5 is provided inside the frame body 1 and is divided into a plurality of unit chambers 6 for accommodating units in which electric devices are mounted. Reference numeral 7 denotes a protection cover formed in a V-shape. One leg is supported on the bent portion 4a of the side plate 4 via a bush 8 of an insulating material, and the other leg is provided on the plate surface of the side plate 4 with a gap. Facing each other and electrically insulated from the side plate 4. The bent portion 4a of the side plate and the bent portion 4a
A storage duct is formed by the protection cover 7 that covers the storage duct. 9 is a branching connector fixed to a support seat 10 attached to the protective cover 7, 11 is an earth bar fixed to the upper part of the frame 1, 12 is an earth wire connecting the earth bar 11 and the protective cover 7, 13 is a unit chamber Is a signal line connected to one of the unit electrical equipment housed in and the branching connector 9. A signal line (not shown) connected to the other side of the branching connector 9 is attached to the inside of the protective cover with an adhesive tape or the like, and is connected to an adjacent switchboard from the end of the protective cover. In the switchboard configured as described above, the signal line from the electric device of the unit is connected to the branching connector 9, and the signal line from the branching connector 9 is fixed to the back side of the protective cover 7 with an adhesive tape or the like and stored. It is led out from the end of the protective cover 7 and connected to an electric device in an adjacent switchboard. In this case, the storage space of the electric device in the switchboard is as shown by the alternate long and short dash line in FIG. 2, and is not restricted by the storage duct.
Can store electrical equipment. Although the branch connector 9 is provided on the protective cover 7 via the support seat 10 in the figure, the signal line may be directly housed in the housing duct without using the branch connector.

[0006]

As described above, the present invention has the following effects. (1) Since the storage duct that stores the signal line from the electric device in the switchboard is composed of the bent portion of the side plate and the protective cover that covers this bent portion, the number of components can be reduced. (2) Since the signal line is housed in the bent portion of the side plate, the space for housing the electric device is expanded and the housing efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a front view of a switchboard showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an enlarged sectional view of a main part of FIG. 2;

FIG. 4 is a front view of a conventional switchboard.

5 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

1 frame body, 2 bottom plate, 3 ceiling frame, 4 side plate,
5 bulkheads, 6 unit chambers, 7 protective covers, 8
Bush, 9-branch connector, 10 support seat, 1
1 ground bar, 12 ground wire, 13 signal wire

Claims (1)

[Claims] 1. A distribution board in which a unit having electric equipment is inserted into a unit room that divides a distribution board, and a signal line from the unit is housed in a storage duct connected to an earth bar, wherein a side plate, a storage duct, and a ground are provided. A line and a signal line,
The side plate is formed by bending a side portion of a thin steel plate in a U shape, and the storage duct covers the bent portion of the side plate and the bent portion and is attached to the bent portion via a bush of an insulating material. A cover, the ground wire has one end connected to a ground bar and the other end connected to a protective cover, and the signal line is connected to an electric device of the unit and stored in the storage duct. Switchboard characterized by.