JP2653763B2 - Meter panel support device for switchboard - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a meter panel supporting device for a switchboard in which instruments are incorporated in a panel box.

[0002]

2. Description of the Related Art A meter panel in a power distribution panel in which instruments are built in a panel box is provided with a pair of opposed support frame plates facing forward on a back base in the panel box. The door panel-shaped meter panel is stretched between the front edges of one of the support frame plates so that one side edge is pivotally connected to the front end of the other support frame plate and temporarily held by a screw or the like. Although the instrument panel is normally used, instruments are attached to the meter panel.If the temporary holding of the other side edge with respect to the front end of the other support frame plate is released, such as when opening and closing the meter panel, the meter panel is cantilevered Therefore, there is a problem that the supporting frame plate is deformed by the weight of the panel and the weight of the instruments, and the meter panel hangs down, so that a smooth opening / closing operation cannot be performed.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to prevent the support frame plate from being deformed and the meter panel from hanging even if the meter panel is cantilevered. An object of the present invention is to provide a meter panel support device for a switchboard which can be provided simply and inexpensively with a structure that eliminates the problem and does not hinder the opening / closing operation of the meter panel.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a meter panel supporting apparatus for a switchboard according to the present invention comprises a pair of supporting frame plates arranged on both sides of a front surface of a back base in a panel box. A door panel-shaped meter panel is stretched between the front ends of the support frame plates so that one side edge is pivotally connected to the front end of one support frame plate and the other side edge is temporarily held at the front end of the other support frame plate. In the switchboard, the opening width of the panel box is made narrower than the width of the box body by a drain portion formed on the outer periphery of the front end of the box body, and one side edge of the meter panel is pivotally connected to the front end. An extension that extends forward from the pivot point of the meter panel and reaches the inside of the drainage portion is continued to the front end of the main plate portion of the support frame plate, and the outer surface thereof is brought close to the inner surface of the drainage portion. It is.

[0005]

According to such a meter panel supporting device for a switchboard, instruments are mounted on a door panel-shaped meter panel between the front ends of a pair of supporting frame plates disposed opposite to the back base in the panel box. When used in the same manner as a conventional switchboard of this type, a meter panel in the form of a door plate having one side edge pivotally connected to the front end of one support frame plate always has the other side edge of the other support frame plate. Since it is temporarily held at the front end, the panel's own weight and the weight of instruments are supported by both support frame plates so that they do not hang down. Even if the temporary holding of the other side edge is released and it becomes cantilever type, it extends forward from the pivot point of the meter panel at the front end of the main plate part of one support frame plate and reaches the inside of the drainage part of the panel box The extension is continued and the outer surface is Because it is close to the inner surface of the part, even if the meter panel hangs down due to the panel's own weight and the weight of the instruments and overload is applied to one of the support frame plates, the extension of one of the support frame plates abuts the drain section It is supported and the meter panel does not hang down, and the deformation of the support frame plate does not hinder the opening and closing operations of the meter panel.

[0006]

Next, the present invention will be described in detail based on a first embodiment shown in FIG. Reference numeral 1 denotes a board box having a drain opening 2 at the outer periphery of an opening edge of a front opening that can be opened and closed by a door (not shown). A back base 3 such as an iron plate base is attached to the inside rear surface of the board box 1. A supporting frame plate 4 made of a metal plate material is provided on one side of the front surface of the back base 3 and pivotally connected to one side edge of the panel. A support frame plate (not shown) for temporarily holding the edge is provided facing forward. Between the front ends of the pair of support frame plates, a door panel-shaped meter panel 5 is provided with an eave portion 4a having one side edge bent inward from the upper and lower edges of the main plate portion 4c of the one support frame plate 4, 4b, the other side edge is stretched while being temporarily held on the temporary holding portion of the other support frame plate so as to be freely disengageable by a handle operation of a handle type disengaging device or a screw tightening operation. ing. Further, various instruments are assembled on the front of the meter panel 5 and inside the panel box 1 to form a switchboard. An extension 6 extending forward from the pivot point of the meter panel 5 is connected to the front end of the main plate 4c of one of the support frame plates 4. The extension 6 is located inside the draining section 2. Position the extension 6
A protection member 7 such as a bush made of synthetic resin, which is adjacent to the inner surface of the drainer 2, is attached to the outer surface of the drainage unit 2.

FIG. 4 shows an example of a door for opening and closing the front opening of the panel box 1, and the door shown in this embodiment is provided on the upper and lower sides of a door plate 11 formed of a steel plate by press forming. Screw insertion holes 13, 13 depressed by embossing are arranged on both side portions of the frame edges 12, 12, and two upper and lower two rail mounting brackets 14, each having an L-shaped cross section, are inserted through the head through the screw. The device mounting rail 1 is mounted between the upper and lower rail mounting brackets 14 by using a countersunk screw 16 that is inserted through the holes 13 and accommodates the head in the depressed portion.
5 is screwed to reduce the material cost and the number of manufacturing steps and to increase the effective space for attaching the device to the door, but it is a matter of course that the door structure is not limited to this.

[0010] The above-mentioned structure is a door plate-like shape provided between the front end of one support frame plate 4 arranged opposite to the back base 3 in the board box 1 and the other support frame plate (not shown). In addition to mounting the instruments on the meter panel 5 and assembling the required instruments in the panel box 1 as well as a conventional switchboard of this type, one side edge of the panel frame 1 is connected to one of the support frame plates 4. The door panel-shaped meter panel 5, which is pivotally attached to the front end of the panel, normally temporarily holds the other side edge to the front end of the other support frame plate, so that the meter panel 5 is equivalent to the panel's own weight and the weight of instruments. Even if it becomes heavy, it is supported by both support frame plates and does not sag. In addition, even when the temporary holding of the other side edge of the meter panel 5 with respect to the front end of the other support frame plate is released when the meter panel 5 is opened and closed, the one support frame plate is provided. The front end of the main plate portion 4c of FIG. 4 has an extension 6 extending forward from the pivot point of the meter panel 5 and located inside the drainage portion 2 of the panel box 1, and a drainage portion formed at the lower part of the outer surface thereof. Since the protection member 7 which is close to the inner surface of the support frame 2 is attached, even if an overload is applied to the lower part of one support frame plate 4 by the weight of the panel and the weight of the instruments,
One support frame plate 4 is attached to the lower part of the extension 6 so that the protection member 7 close to the inner surface of the drain 2 comes into contact with the drain 2 and the meter panel 5 does not hang down. Since the support frame plate 4 is not deformed, the meter panel 5 can smoothly open and close without any trouble. In the above embodiment, the extension 6 of one support frame plate 4 positioned inside the drain 2 of the board box 1 does not directly contact the drain 2, and the outer surface of the extension 6 Since the contact is made via the protection member 7 attached to the lower part, the draining part 2 and the extension part 6 of the support frame plate 4 are prevented from being damaged by contact. It is not always necessary, and the extension 6 of the support frame plate 4 may directly contact the draining portion 2, or a protrusion may be formed on the extension 6 and contact the draining portion 2.

[0009]

As is apparent from the above description, the present invention has a pair of support frame plates disposed on both sides of the front surface of the back base in the panel box, and a door plate-shaped meter is provided between the front ends of both support frame plates. The width of the panel box is determined by the width of the panel box in a distribution panel where the panel is stretched so that one side edge is pivotally attached to the front end of one support frame plate and the other side edge is temporarily held at the front end of the other support frame plate. A water drain portion formed on the outer periphery of the front end of the main body makes the width narrower than the lateral width of the box main body, and the pivot of the meter panel is attached to the front end of the main plate portion of one of the support frame plates that pivots one side edge of the meter panel to the front end. An extension extending forward from the landing point and reaching the inside of the draining section is continued and its outer surface is brought close to the inner surface of the draining section, so that the front end of the other support frame plate is used when opening and closing the meter panel. The other side of the meter panel Even if the temporary holding is released and the cantilever type is released, the supporting frame plate will not be deformed by the meter panel which has a considerable weight due to the panel's own weight and the weight of the instruments, so that the meter panel will be smooth. There is no danger of any trouble in the opening and closing operations. In addition, there is an advantage that it can be provided at low cost because of its simple structure. Therefore, the present invention is extremely significant in that it contributes to the development of the industry as a meter panel support device for a switchboard which solves the conventional problems.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway front view showing the embodiment of the present invention.

FIG. 3 is a partially cutaway bottom view showing the embodiment of the present invention.

FIG. 4 is a perspective view showing an example of a door that opens and closes a front opening of the board box of the present invention.

FIG. 5 is a sectional view of a main part of the door shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Panel box 2 Drain part 3 Back base 4 One support frame plate 5 Meter panel 6 Extension part 7 Protection member

Claims (1)

(57) [Claims] 1. A pair of support frame plates are arranged on both sides of the front surface of a back base (3) in a panel box (1), and a door panel-shaped meter panel (5) is provided between the front ends of both support frame plates. One side edge is pivotally connected to the front end of one support frame plate (4) and the other side edge is stretched so as to be temporarily held at the front end of the other support frame plate. The width of the opening is made narrower than the lateral width of the box body by a drain section (2) formed on the outer periphery of the front end of the box body, and one side of one side edge of the meter panel (5) is pivotally attached to the front end. At the front end of the main plate portion of the plate (4), an extension portion (6) extending forward from the pivot point of the meter panel (5) and reaching the inside of the drainage portion (2) is continued, and its outer surface is connected to the drainage portion (2). 3. A meter panel supporting device for a switchboard, which is located close to an inner surface of the switchboard.