JPH0145204Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a switchboard, and particularly relates to an improvement of a box body.

[Technical background of the invention and its problems]

Normally, a power distribution board that stores equipment inside a box is
A framework is made of angle iron, and steel plates are welded around this framework to make it a single piece. An opening is provided on the front or side side, and a door that can be opened and closed is provided in this opening to install the equipment. During this process, a worker is inside the box.

Therefore, in terms of the work process, installation of equipment cannot begin until after the box is completed, and the work must be done in extremely restricted spaces, which limits the number of people involved. Some parts were difficult to access, which caused problems in terms of workability.

Therefore, there are some systems that partially unitize the system and assemble the unit outside the switchboard, but similar problems still occur when installing the unit.

This tendency is particularly noticeable in switchboards that house cut-off switches, where if the cut-off switches are pulled out, the space can be used as a work space, but in switchboards that do not have equipment that can be pulled out.

[Purpose of invention]

This invention was made in view of the above circumstances,
To provide a power distribution board that is free from restrictions on the assembly work of a device made up of a plurality of single devices and the installation work of this device, and that also facilitates the work of installing an external frame body and improves workability. purpose.

[Summary of the idea]

The present invention includes an internal frame body that has a box body with equipment mounting parts on the upper and lower parts and has an integral structure;
This internal frame is surrounded by an opening at the bottom or the front, making it an integral structure, and is divided into an external frame that is detachably connected to the internal frame, so that it can be viewed from all directions when installing equipment on the internal frame. This is a power distribution board designed to improve workability by allowing work to be carried out and by inserting the external frame into the internal frame for installation.

[Example of idea]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 and FIG. 2, the switchboard 1 is
It is composed of an inner frame 2 to which equipment is attached, and an outer frame 4 detachably connected to the inner frame 2 via screws 3. As shown in FIGS. 3 and 4, the internal frame 2 includes a base 5 made of U-shaped steel that is welded together into a rectangular frame shape and provided with a hole 5a into which the screw 3 is inserted. Or a framework 6 in which angle iron is welded into a cubic frame shape, the lower part of which is integrally joined to the base 5, a lower mounting frame 7 in which a plurality of U-shaped steels are joined to the base 5 by welding, this lower mounting frame 7. An upper mounting frame 8 in which a plurality of U-shaped steels are welded to the upper member of the framework 6 in accordance with the above, and this upper mounting frame 8 and the lower mounting frame 7
The support 10 includes an insulating support 10 on which a device 9 such as a rectifier unit including a semiconductor rectifier, a fuse, a water-cooled pipe, etc., is mounted. Further, as shown in FIGS. 5 and 6, the external frame 4 is made by bending a steel plate into a box shape having six sides, and has an opening 11a on the bottom surface so that it can be inserted into the internal frame 2 from above. A box body 11 has an insertion hole 11b for the screw 3 corresponding to the hole 5a of the base 5, an opening 11c on the front for entering and exiting during inspection, and a box body 11 that covers the opening 11c of the box body 11 and can be opened and closed freely. It consists of a door 12 attached and provided with a handle 12a. In FIG. 6, 11d is an inspection opening provided on the back side, and 13 is a cover that covers this opening.

Therefore, when attaching the device 9 to the internal frame 2, the work can be done by inserting hands from the front, back, left, right, top, etc., making the work extremely easy. However, after completing this installation work,
Insert the external frame 4 from above and tighten both with the screws 3.

In addition, in the above explanation, the outer frame 4 is inserted into the inner frame from above, but the entire front part of the outer frame 4 can also be bent into a box shape with five open sides. , it may be inserted from the lateral direction.

[Effect of idea]

Since the present invention is configured as described above,
The equipment can be assembled independently in a location completely separate from the internal frame, and when installing this assembled equipment to the internal frame, work can be done from all directions, greatly improving work efficiency. improves. Furthermore, since it is possible for multiple workers to work simultaneously, the production period can be significantly shortened. Furthermore, when attaching the external frame to the internal frame, it is inserted from the top or back and fixed at the bottom, which not only facilitates the installation process but also makes it extremely easy to replace equipment.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a side view of Fig. 1, Fig. 3 is a front view showing an internal frame of an embodiment of the present invention, and Fig. 4 is a side view of Fig. 3.
5 is a front view of an external frame of an embodiment of the present invention, and FIG. 6 is a sectional view taken along line A--B in the direction of the arrow. FIG. 2... Internal frame, 4... External frame, 9... Equipment

Claims (1)

[Scope of utility model registration request] In a power distribution board that houses a device made up of a plurality of individual devices assembled inside a box, the box has an internal frame that has an integral structure with mounting portions for the devices on the upper and lower parts, and this internal frame. What is claimed is: 1. A switchboard comprising an external frame that surrounds the internal frame, has an opening at the bottom or the front thereof, has an integral structure, and is removably connected to the internal frame.