JPH0741989U - Box for electrical equipment - Google Patents

Abstract

(57) [Summary] [Purpose] The box body that constitutes the electrical box is
It can be formed with the minimum necessary welded joints, and electrical components can be easily assembled and wired. [Structure] The electrical equipment box 1 includes a box body 2 having a substantially housing shape, the front side of which is an opening 2a made of a bent plate material. The box body has a four-sided rectangular tubular body 10 adjacent to the front opening. The rectangular tubular body is bent into a substantially U-shape to form a U-shaped panel 11 forming three side surfaces, and a plate-shaped panel 15 forming the remaining one surface.
Of which the joining edges are integrated by welding. The back surface of the rectangular tubular body has an inner plate portion 21 for assembling circuit components.
The back panel 20 is integrally formed by performing a bending process so as to bulge. The back panel is separably assembled and fixed to the opening portion on the back side of the rectangular tubular body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electrical equipment box suitable for use as a control panel, an operation panel, a terminal board, or the like provided as an accessory to various machines and devices.

[0002]

[Prior art]

 Conventionally, as this kind of electrical equipment box, one having a structure as schematically shown in FIGS. 4 to 6 is known. To briefly explain this, the electrical equipment box generally designated by reference numeral 1 has a substantially housing shape with a front surface having an opening 2a by a plurality of bent panel plate materials, as is clear from FIG. The box main body 2 is formed so as to present, and a front door 3 that opens and closes the front opening 2a in a sealed state.

Here, in FIG. 5, reference numeral 3 a is a hinge portion for opening and closing the front door 3, and 3 b is a handle for opening and closing the front door 3. Further, on the inner side surface of the back plate 4 which closes the back side facing the front opening 2a in the box body 2, a component (hereinafter referred to as an electrical component) that constitutes an appropriate electrical circuit is assembled, An intermediate plate 5 for performing wiring work and the like is mounted and fixed at predetermined intervals.

By the way, as is clear from FIG. 4, the box body 2 in such an electrical equipment box is formed by bending a plate material so as to have a U-shape in plan view, and the rear plate 4 and the left and right side plates 6a. , 6b, and an upper panel 8 and an under panel 9 that are assembled so as to cover the upper surface portion and the lower surface portion of the U-shaped body 7.

Here, the upper panel 8 and the under panel 9 are integrated by forming their joint edges by welding and joining them with the U-shaped body 7. It is supposed to do. At this time, the inner plate 5 was assembled and fixed to the inside of the rear plate 4 of the U-shaped main body 7 by welding or the like at a predetermined interval.

The side edge portion of the front opening 2a of the box body 2 described above is formed in a draining shape that can prevent oil and the like from entering the inside.

[0007]

[Problems to be solved by the device]

 By the way, in the above-mentioned conventional electrical equipment box 1, since the box body 2 is formed with the structure shown in FIGS. 4 to 6, the following defects occur.

That is, in the above-described conventional structure, particularly in the box main body 2, the welding length at the joint between the plate members such as the U-shaped main body 7, the upper panel 8, the under panel 9 and the like constituting the box main body 2 is extremely long, and In addition to this, welding distortion causes troubles such as complicated work for assembling and manufacturing the box body 2, including finishing at the welded joint, and a lot of work time.

Particularly, in the conventional box 1, most of the processing cost and working time are spent for such welding and finishing, and the joining line by such welding is used in the box body 2 and the like. It was often exposed within the visual field of appearance, and the appearance was poor.

Further, in the above-described conventional structure, the inner plate 5 for assembling the electrical components and wiring work is previously assembled and fixed by welding inside the back plate 4 in the box body 2. It is necessary to assemble and wire the electrical components inside the box body 2 through the front opening 2a, which is a problem in terms of workability. In addition, safety of work and reliability of assembly are important. It is also a problem, and it is desirable to take some measures to eliminate these problems.

In particular, since dust, water, oil, etc. always enter the electrical equipment box 1 of this type, it is desired to ensure the reliability by the above-mentioned welding and joining. The inside of Box 1 is often made up of parts such as integrated circuits that are not susceptible to dust, moisture, and temperature rise. Therefore, environmental improvement measures inside Box 1 are being actively implemented. Therefore, the structure of the box body 2 and the like described above must be improved in consideration of these points.

Further, in recent years, design changes are frequently made due to rationalization and improvement of machines and devices, which necessitates improvement of the electrical equipment box 1. For this purpose, the box 1 itself must be replaced. It requires a large amount of cost and work time, such as re-installing the product from the installation site, improving it, and then installing it again. It is necessary to take such points into consideration.

The present invention has been made in view of the above circumstances, and it is possible to form a box main body in which electrical components and the like are incorporated with a minimum necessary welded joint, which causes problems in workability and appearance. In addition to solving the above problems, it is possible to obtain an electrical component box that is extremely easy and reliable to assemble electrical components into the box body and wiring work, has a simple structure, and has excellent assemblability and cost. Has an aim.

[0014]

[Means for Solving the Problems]

 In order to meet such a demand, the electrical equipment box according to the present invention has a box main body formed in a substantially housing shape with a front side opening portion by a plurality of bent panel plate materials. It consists of a square tubular body with four side surfaces adjacent to the section and a back surface portion that closes the back side opening, and the square tubular body bends the panel plate material in a substantially downward U shape to form a three-sided surface. Side panel of the U-shaped panel and the lower side edges of both sides of the panel and the plate-shaped panel of the other side that is integrated by welding and joining. The inner plate for attachment is composed of a back panel that is integrally formed by bending so that it bulges inside the box, and this back panel is separably attached to the rear opening side edge of the rectangular tube. It ’s supposed to be fixed That.

[0015]

[Action]

 According to the present invention, the rectangular tubular body can be easily formed by integrally joining the plate-shaped panels to the lower edges of both sides of the U-shaped panel by spot welding or the like to integrate them. After assembling various electrical components and wiring work to the inner plate part for electrical component assembly that is integrally provided on the back panel that is detachably assembled so as to block the rear end side opening The box body can be formed by detachably assembling and fixing this back panel to the back side of the rectangular cylinder with bolts, nuts, etc.

[0016]

【Example】

 1 to 3 show one embodiment of an electrical equipment box according to the present invention. In these drawings, the same or corresponding parts as those in FIGS. 4 to 6 described above are designated by the same reference numerals. Detailed description is omitted.

Now, according to the present invention, in the box 1 for electrical equipment, the box body 2 formed in a substantially housing shape with the front surface side being the opening 2a by a plurality of bent panel plate materials, The rectangular tubular body 10 is formed by four side surface portions adjacent to the front opening portion 2a, and a rear surface portion (a back panel 20 described later) that closes the rear surface opening portion is divided.

Then, by bending the panel member into a substantially downward U-shape, the above-mentioned rectangular tube body 10 becomes a U-shape having three side surfaces 12, 13, 14 including an upper surface, a left side, and a right side. The panel 11 and the lower edge portions 13a and 14a on both sides of the panel 11 are integrated by welding to form a plate-shaped panel 15 (under panel) which is a side surface portion of the other surface.

Further, the above-mentioned back surface is constituted by the back panel 20 integrally formed by an appropriate bending work such as drawing work so that the inner plate part 21 for assembling the electrical components is bulged inside the box 1. Further, the back panel 20 is separably assembled and fixed to the rear side opening side edge portion of the rectangular tubular body by a fastening means such as a bolt 22.

In the structure of the present invention, the plate-shaped panel 15 is welded to the lower edge portions 13a and 14a on both sides of the U-shaped panel 11 by spot welding or the like to be integrated. The rectangular tubular body 11 can be easily formed. In particular, the number of welded joints is greatly reduced compared to the past, welding distortion is small, and finishing is not required. Assembly workability is improved and work time is shortened. And cost reduction can be achieved.

In particular, according to the present invention, the welding joint line between the joints formed by the members forming the box body 2 can be prevented from being exposed within the visual field of the appearance of the box 1, thus improving the overall appearance, A beautiful appearance form and cost reduction can be achieved.

Various electrical components are attached to the inner plate portion 21 for assembling electrical components integrally provided on the back panel 20 that is detachably assembled and fixed so as to close the rear end side opening of the rectangular tubular body 11. After assembling parts (not shown) and performing wiring work, the back panel 20 is separably assembled and fixed to the back side of the rectangular tubular body 11 by means of bolt and nut fastening means (22). Thus, the box body 2 can be assembled and formed.

In other words, in the conventional structure, another plate for assembling circuit components called an intermediate plate is prepared in the box body 2, and is fixed in advance in the box body 2 to secure the electrical components. According to the present invention, the back panel 20 having a separable mounting structure is employed, and the inner plate portion 21 for assembling the electric components is integrally formed on the back panel 20 while the assembling and wiring work is performed. Therefore, assembling of the electrical components to the inner plate portion 21 and wiring work can be performed by the open work of the back panel 20 in a single plate state.

Then, by mounting the back panel 20 on the rectangular tubular body 11 after assembling the electrical components, the assembly and wiring of the electrical components are much easier than the conventional ones. In addition, assembly time can be shortened and work safety can be achieved, and more reliable and high assembly reliability can be achieved.

Further, according to the present invention, since the back portion of the box body 2 is the back panel 20 and is a separate assembly type, it can be easily used in various machines and devices, such as a heat exchanger or a heat exchanger. It can be easily laid out and used for equipment such as coolers.

Further, according to the present invention, it is possible to easily deal with design changes accompanying rationalization of various machines and devices by simply changing the back panel 20, etc. It has the advantage that it can be used as it is, replacement and improvement at the installation site can be performed easily and reliably, problems such as the large amount of work time and cost as in the past can be improved, and user service can be improved. .

In particular, since dust, water, oil, etc. always enter the inside of the electrical equipment box 1 of this type, it is necessary to continuously weld the joints. Although it took about 70% of the time and work cost, according to the present invention, it is possible to eliminate the joint part having a long welding length by pressing the plate material (bending, bending, etc.), and to bend the flange. Since it is possible to bend all parts at the same time in the part, it is possible to adopt a structure with no welded joint lines in the visual field of the box 1, which gives a good appearance and an inexpensive electrical equipment box 1 with a beautiful external shape. It is possible.

It is needless to say that the present invention is not limited to the structure of the above-described embodiment, and the shape, structure, etc. of each part of the electrical equipment box 1 can be appropriately modified or changed. Further, the electrical equipment box 1 according to the present invention is suitable for use as a control panel, an operation panel, a terminal board, or the like that is provided as an accessory to various machines and devices, and its use is limited to this. is not.

Furthermore, it goes without saying that the electrical equipment box 1 can be used not only as a self-standing box but also as a wall-mounted box. Here, in FIG. 2, 30 is a bolt for attaching an outer wall used when it is used as a wall-hanging type, and 31 is a sleeve, which may be used if necessary. The sleeve 31 is provided on the back surface side of the back panel 20 in the space on the back surface side by the inner plate portion 21 for assembling electrical components, and is for fixing the bolt 30 to the wall surface.

[0030]

[Effect of device]

 As described above, according to the electrical equipment box of the present invention, a box body having a substantially housing shape with an opening on the front side is formed into a rectangular tubular body with four side surface portions adjacent to the front side opening and its rear surface. And the lower edge of both sides of the U-shaped panel that is the side surface of the three sides by bending the panel plate material into a substantially downward U-shape. And a plate-like panel that is the other side surface that is integrated by welding such as spot welding, and the inner plate for assembling electrical components bulges inside the box. Since the back panel is integrally formed by bending, the back panel is separably assembled and fixed to the edge portion on the rear side opening side of the rectangular cylinder by a suitable fastening means. Simple and inexpensive configuration Regardless, it provides the practical various excellent effects as follows.

That is, according to the present invention, the rectangular tubular body can be easily formed by integrally joining the plate-shaped panels to the lower edges of both sides of the U-shaped panel by spot welding or the like. Since the back panel that has the inner plate part for assembling electrical components is separably assembled and fixed to this, the welding length can be minimized and welding distortion is small compared to the conventional method, and the finish can be improved. Can be done easily. Therefore, the workability of assembling the box body and the like and the problem in appearance can be solved, and a good-looking product in which the welding line is not within the visual field of appearance can be obtained.

In particular, according to the present invention, by bending such as pressing, a portion having a long welding length in the past can be omitted, and at the same time, bending can be performed simultaneously on all the bent portions of the flange, so that the welding can be performed within the external visual field. A beautiful appearance form without lines and cost reduction are possible.

Further, according to the present invention, since the back panel having the separable assembly structure is adopted and the inner plate portion for assembling the electric component is integrally formed with the back panel, Assembling and wiring of the electrical components of the above is done by performing the open work in the state of a single plate called the back panel, and then by assembling the panel to the rectangular tubular body. It is extremely easy to perform compared to the conventional method, and the assembly time can be shortened and the work safety can be achieved, and the excellent effect that more reliable and highly reliable assembly can be achieved is achieved.

Furthermore, according to the present invention, the back of the box body is a back panel, which is a separate assembly type, so that it can be easily used in various machines and devices, such as heat exchangers and It can be easily laid out and used for equipment such as coolers. Further, according to the present invention, it is possible to easily deal with design changes in various machines and devices simply by changing the back panel, etc., and replacement and improvement at the installation site can be performed easily and reliably. Compared with the conventional technology, there is an advantage that extra work time and cost are unnecessary and user service can be improved.

[Brief description of drawings]

FIG. 1 is a schematic exploded perspective view of a main part of a box body structure showing an embodiment of an electrical equipment box according to the present invention.

FIG. 2 is a schematic exploded perspective view of an entire electrical box according to an embodiment of the present invention.

FIG. 3 is a schematic side cross-sectional view of a main part of the box, showing an embodiment of the electrical equipment box according to the present invention.

FIG. 4 is a schematic exploded perspective view of a box body structure showing an example of a conventional electrical equipment box.

FIG. 5 is a schematic exploded perspective view of the entire conventional electrical equipment box.

FIG. 6 is a schematic side sectional view of a box body in a conventional electrical equipment box.

[Explanation of symbols]

 1 Box for electrical equipment 2 Box body 2a Front opening 3 Front door 3a Hinged part 3b Handle 10 Square tube 11 U-shaped panel 12 Side part 13 Side part 13a Lower side edge 14 Side part 14a Lower side edge 15 Plate shape Panel (under panel) 20 Back panel 21 Inner plate part for assembling electrical components 22 Bolts for fastening 30 Bolts for mounting on outer wall 31 Sleeve

Claims (1)

[Scope of utility model registration request] 1. A box body having a substantially housing shape with an opening on the front side is formed of a plurality of bent panel plate materials, and an electrical component is assembled inside the back side of the box body. In the electrical equipment box having an inner plate part for use, the box body is composed of a square tubular body formed by four side surface portions adjacent to the front side opening portion, and a rear surface portion closing the rear surface side opening of the square tubular body. The square tube body is a U-shaped panel that constitutes the side surface of the three sides by bending the panel plate material in a substantially U-shaped downward shape, and is welded to the lower edges of both sides of the U-shaped panel. And a plate-shaped panel that constitutes the side surface of the remaining one surface that is integrated by, and the back surface is integrally formed by bending so that the inner plate portion for assembling the electrical components swells inside the box. Is formed Is constituted by Kkupaneru, the back panel, electrical boxes, characterized in that it is detachably assembled fixed on the side edge portion of the rear side opening of the rectangular cylindrical body.