WO2015170426A1

WO2015170426A1 - Board device chassis

Info

Publication number: WO2015170426A1
Application number: PCT/JP2014/075572
Authority: WO
Inventors: 信和永易; 高央庄山; 沼田　伸一; 徹山地
Original assignee: 三菱電機株式会社
Priority date: 2014-05-08
Filing date: 2014-09-26
Publication date: 2015-11-12
Also published as: CN106256059A; JP6109418B2; KR20160140961A; DE112014006643T5; DE112014006643B4; JPWO2015170426A1; KR101790917B1

Abstract

A board device chassis has right and left side boards (4, 5), a floor board (2), and a top board (3) fit together to form a cuboid and has corner fittings (6) attached to corner portions inside the cuboid to join the side boards (4, 5) and the floor board (2) and join the side boards (4, 5) and the top board (3). The corner fittings (6) each have a plurality of joint surfaces intersecting orthogonally with each other. The joint surface (6c) joining the floor surface of the floor board (2) or the ceiling surface of the top board (3) has a board thickness formed thicker than the other joint surfaces, and a foundation fixing attachment hole (13) is provided in the joint surface (6c) joining the floor surface of the floor board (2).

Description

Case for panel equipment

The present invention relates to a panel device casing, and more particularly to a structure of a panel device casing in which electrical equipment such as a switchboard or switchgear is accommodated.

A conventional case for a panel device is, for example, a combination of a floor plate having a U-shaped bent portion formed in a peripheral portion with a side plate having U-shaped bent portions formed at both ends, and a corner portion thereof. , Fitting the corner metal fittings, which are almost L-shaped and U-shaped in section, into the U-shaped bent parts of the floor and side panels, and join the holes provided in the overlapping parts with rivets, etc. Thus, a technique for forming a casing for a panel device having excellent mechanical strength without using a welded structure is disclosed (for example, see Patent Document 1).

JP 2004-88933 A (page 4, FIG. 1-2)

In a conventional case for a panel device such as Patent Document 1, a substantially L-shaped corner metal fitting having a U-shaped cross section is fitted inside a U-shaped bent portion of a floor plate and a side plate, and a rivet Since the corners are made rigid by connecting them together, etc., the structure of the ramen structure is large, so there are many bent parts in each member, the structure becomes complicated, and the finished dimensions of drilling and bending of each member are sophisticated. Since there is a problem that processing accuracy is required, a simpler, better workability, and economical structure has been desired.
In addition, a case used for electrical equipment such as a switchboard or switchgear is required to have a suitable seismic performance. In order to improve the seismic performance, it is effective to reduce the rocking vibration of the foundation fixing part. For this reason, when high seismic performance is required, a thick plate is conventionally used to increase the rigidity of the foundation fixing part. Although measures such as welding have been taken, there has been a demand for a case for a panel device having a simpler structure, high rigidity of the base fixing portion and excellent seismic performance.

The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a cabinet for a panel device having a simple configuration and excellent mechanical strength and earthquake resistance.

The case for a panel apparatus according to the present invention is a board in which left and right side plates, a floor plate, and a top plate are combined to form a rectangular parallelepiped shape, corner metal fittings are assembled to the inner corners, and the side plates and the floor plate are joined. The housing for equipment has a plurality of joint surfaces intersecting at right angles to each other, and the joint surface with the floor surface of the floor board is formed thicker than the other joint surfaces, and is used for foundation fixing Mounting holes are provided.

According to the case for a panel device of the present invention, the corner bracket to be assembled to the inner corner portion of the case has a plurality of joining surfaces intersecting at right angles to each other, and the joining surface with the floor surface of the floor board has other plate thicknesses. It is formed thicker than the joint surface, and mounting holes for fixing the foundation are provided, so a simple shape corner bracket can be used to form a rigid frame structure with high corner rigidity. A high case for a board apparatus can be obtained.
For this reason, the response magnification at the time of vibration during transportation and vibration due to an earthquake can be reduced. For example, when electrical equipment is housed inside, the acceleration applied to the electrical equipment can be reduced. Can be provided at low cost.

It is a perspective view which shows 1 corner part of the floor part of the housing | casing for board apparatuses by Embodiment 1 of this invention. FIG. 2 is an exploded perspective view of FIG. 1. 1 is an overall perspective view of a cabinet for a panel device according to Embodiment 1 of the present invention. It is an expanded view before the bending process of the corner metal fitting shown in FIG. It is sectional drawing which shows the foundation fixing | fixed part of FIG. It is a perspective view which shows 1 corner part of the ceiling part of FIG. It is a disassembled perspective view which shows the 2 corner part of the floor part of the housing | casing for panel devices by Embodiment 2 of this invention. It is a disassembled perspective view which shows 1 corner part of the floor part of the housing | casing for board apparatuses by Embodiment 3 of this invention. It is sectional drawing which shows the foundation fixing | fixed part of FIG.

Embodiment 1 FIG.
1 is a perspective view showing a corner portion of a floor portion of a cabinet for a panel device according to Embodiment 1, FIG. 2 is an exploded perspective view showing an exploded state of FIG. 1, and FIG. It is a whole figure of a case. FIG. 4 is a developed view of the corner bracket shown in FIG. 1 before bending.
Hereinafter, a description will be given based on the drawings. When the casing is viewed in the direction of FIG. 3, the front is the front side of the casing and the rear is the back side. The left-right direction is referred to as the width direction of the housing, and the direction from the front side toward the back side is referred to as the depth direction.

First, the entire case for the panel apparatus will be described with reference to FIG.
As shown in FIG. 3, the panel device housing 1 includes a floor plate 2, a top plate 3, a left side plate 4, a right side plate 5, and a corner fitting 6 that couples them, and is formed in a rectangular parallelepiped shape as a whole. Yes. Although not shown, in the actual use state, a front cover or a front door is provided on the front side, and a back cover or a rear door is provided on the back side. Furthermore, although a vertical frame, a horizontal frame, or a partition plate is added as appropriate according to the size of the casing and the equipment accommodated therein, the illustration and detailed description thereof are omitted because they are not the main part of the present application. Since the characteristic part of this application has the characteristic in the junction part of the floor board 2 and the top plate 3, and the left and

right side plates

4 and 5, the detail of the part is demonstrated below.

FIG. 1 is a partial perspective view showing the lower left corner of FIG. 3, and FIG. 2 is an exploded perspective view thereof. The shape of the corner bracket 6 is basically the same for the four corners on the floor plate 2 side and the four corners on the top plate 3 side. However, it is symmetrical in the front-rear, left-right, and up-down directions. Below, it demonstrates on behalf of a left back lower corner part, and in order to avoid complexity, all the corner metal fittings of each corner are shown with the same code | symbol.
The structure of the corner portion will be described with reference to FIGS. 1 and 2.
The floor board 2 is bent at both sides in the width direction in an L-shape in the vertical direction to form a bent portion 2a, and similarly bent at both sides in the depth direction in the vertical direction to form a bent portion 2b.

In the following description, a horizontal portion of the floor board 2 that does not include the

bent portions

2a and 2b is referred to as a floor surface. The left and right bent portions 2a are formed in advance longer than the width of the floor surface in the depth direction, and the long end portions are bent in parallel with the bent portion 2b to form end bent portions 2c. A gap is formed between the bent portion 2b and the end bent portion 2c because the bent portion 4a of the left side plate 4 described below is fitted.

The left side plate 4 is bent at two vertical sides into a U shape to form a bent portion 4a.
The corner bracket 6 has a joint surface 6 a with the bent portion 4 a of the left side plate 4, a joint surface 6 b with the bent portion 2 b of the floor plate 2, and a joint surface 6 c with the floor surface of the floor plate 2. . The

joint surfaces

6a, 6b, 6c are formed at right angles to each other.
Here, the term “joint surface” includes not only the “surface” that comes into contact with the joining partner but also the members that form the contact surface. That is, the corner metal fitting 6 is comprised by the joining surface 6a, the joining surface 6b, and the joining surface 6c.

The floor plate 2, the left side plate 4 and the corner fitting 6 are joined by rivets. Therefore, a rivet hole 7 to be joined to the left side plate 4 and a rivet hole 8 to be joined to the corner fitting 6 are provided on the floor plate 2 side, and the rivet hole 9 and the corner to be joined to the floor plate 2 are provided on the left side plate 4. A rivet hole 10 to be joined to the metal fitting 6 is provided, and the corner metal fitting 6 is provided with a rivet hole 11 to be joined to the floor plate 2 and a rivet hole 12 to be joined to the left side plate 4.
Further, a mounting hole 13 for fixing the foundation is provided on the side of the joint surface 6c of the corner metal fitting 6, and a hole 14 for the foundation is provided on the floor surface of the floor plate 2 corresponding thereto.

The corner bracket 6 is manufactured by bending a steel plate, a stainless steel plate, an aluminum plate, or the like.
FIG. 4 is a development view of the corner bracket 6 before the bending process showing an example thereof.
As shown in the figure, the outer shape is cut out from the plate material to form the

rivet holes

11 and 12 and the mounting hole 13. The dotted line in the figure indicates a fold line, and a corner fitting 6 as shown in FIG. 1 or 2 is obtained by bending the fold line at a right angle. At this time, the two attachment holes 13 are formed to overlap each other. Since the joint surface 6c serving as the foundation fixing portion is doubled by overlapping the two surfaces, the horizontal fold line in FIG. 4 is shifted by the plate thickness on the left and right sides of the cut portion.
In addition, you may manufacture the corner metal fitting 6 by casting from metals, such as iron and aluminum, without using a bending process. Casting allows the plate thickness to be freely set, and if it is made in large quantities, it is easy to manufacture.

Next, an assembly method will be described with reference to FIG.
First, the left side plate 4 and the right side plate 5 are aligned from the outside of the left and right bent portions 2a in the width direction of the floor plate 2, and the rivet hole 7 and the rivet hole 9 are combined and joined by rivets. Next, the three surfaces of the corner metal fitting 6 are respectively aligned with the bent portion 4 a of the left side plate 4, the bent portion 2 b of the floor plate 2, and the floor surface of the floor plate 2. Then, the rivet hole 8 and the rivet hole 11, and the rivet hole 10 and the rivet hole 12 are combined and joined by rivets. Assemble the remaining three corners in the same way. At this time, the mounting holes 13 of the corner bracket 6 are formed so as to coincide with the base holes 14 of the floor board 2.

FIG. 5 is a cross-sectional view showing the foundation fixing portion of FIG. As shown in FIG. 5, since the foundation bolts 15 are embedded in advance in the foundation surface, the foundation holes 14 and the mounting holes 13 of the casing 1 for the panel device are installed together with the foundation bolts 15, Secure with nut 16.
As shown in the figure, the thickness of the fixed portion of the foundation bolt 15 is doubled at the joint surface 6c of the corner bracket 6, and when the floor surface of the floor plate 2 is included, the thickness becomes triple. For this reason, the rigidity of a foundation fixing | fixed part can be made high.

Next, the ceiling side will be described.
FIG. 6 is a perspective view of the front left upper corner portion of the ceiling portion of FIG. 1 as viewed from the front. The ceiling side is basically the same as the floor side. Since the top plate 3 is formed with a bent portion around the same as the floor plate 2, the left side plate 4 is combined from the outside of the bent portion and joined by rivets. Next, the left side plate 4 and the top plate 3 are joined with rivets using the corner fittings 6. Reassemble the remaining three corners in the same way. In addition, the top plate 3 also calls the horizontal surface except a bending part a ceiling surface.
When the corner bracket 6 is used on the ceiling side, the mounting hole 13 of the corner bracket 6 described in FIG. 2 is a mounting hole for the hanging bracket. Therefore, a suspension fitting hole 17 is provided on the ceiling surface of the top plate 3 facing the mounting hole 13. By tightening an eyebolt (not shown) or the like in the suspension metal fitting hole 17 with a nut or the like, the panel device housing 1 can be lifted.

The part that attaches the eyebolt is doubled by the plate material of the corner bracket 6 and is a total of three in total with the ceiling surface of the top plate 3, so even if an external force is applied when the casing is lifted, this part The rigidity and strength of the housing are high, and the normal shape of the housing can be maintained.
In addition, the attachment hole 13 of the corner metal fitting 6 used for the ceiling side does not need to be a small hole in particular, and may be a round hole. Moreover, the mounting hole 13 of the corner metal fitting 6 used on the floor side is not limited to the oval hole, and may be a round hole.
When the assembly is completed, the state shown in FIG. 3 is obtained.

As described above, the rivet connection between the three surfaces of the left side plate 4, the right side plate 5 and the floor plate 2, and the three sides of the left side plate 4, the right side plate 5 and the top plate 3 using the corner bracket 6, It is possible to obtain a casing having a rigid frame structure in three directions of up, down, left and right, and front and rear, and a high rigidity of the base fixing part and the ceiling suspension part.
That is, the joining surfaces of the joining

surfaces

6a, 6b, 6c of the corner bracket 6 and the

side plates

4, 5, the floor plate 2 and the top plate 3 are not only the other two surfaces but also the shear direction of the rivet, It is firmly connected so as to support the load in the tension and compression directions, and not only can the rivet be prevented from shifting, but also the rigidity of the corner bracket 6 can be used effectively, and the rigid frame has high rigidity in the three directions of front, rear, left and right. It becomes a structural housing.

Moreover, since the strength of the foundation fixing portion is increased, the rocking vibration can be reduced, and a casing for a panel device having high seismic performance can be obtained.
In addition, high-precision machining is not required for parts production, it can be produced by simple bending, and assembly can be done only by rivet work that does not require skill such as welding. Body 1 is obtained.

In the description so far, the floor plate 2, the top plate 3, the left side plate 4, and the right side plate 5 are all joined using the corner bracket 6. However, the floor plate 2, the left side plate 4, and the top plate 3 side are excluded. You may join the junction part of the right side surface board 5 using the corner metal fitting 6. FIG. In this case, it is possible to obtain a cabinet for a panel device with a simpler structure and a high rigidity of the foundation fixing portion.

As described above, according to the panel device casing of the first embodiment, the left and right side plates, the floor plate, and the top plate are combined to form a rectangular parallelepiped, and the corner metal fittings are assembled to the inner corners thereof. It is a case for a panel device in which a face plate and a floor plate are joined, and the corner bracket has a plurality of joining surfaces that intersect at right angles to each other, and the joining surface with the floor surface of the floor plate has a thickness that is greater than that of other joining surfaces. Because it is thick and has mounting holes for fixing the foundation, it is possible to construct a rigid frame structure with a rigid corner bracket and a high rigidity of the floor side corner. An apparatus housing can be obtained.
For this reason, the response magnification at the time of vibration during transportation or vibration due to earthquake can be reduced. For example, when electrical equipment is housed inside, the acceleration applied to the electrical equipment can be reduced, so that a switchboard or switchgear with high earthquake resistance performance can be reduced. Can be provided at low cost.

Further, in addition to the above, the side plate and the top plate are joined by attaching a corner bracket to the inner corner of the corner plate. Since it is thicker than the surface, the rigidity of the ceiling corner can be increased, and even if an external force is applied when the chassis is lifted, the rigidity and strength of this part is high, so the normal shape of the chassis Can be held.

The corner metal fitting is manufactured by bending a sheet metal, and the joining surface for increasing the sheet thickness is formed by overlapping two of the bent surfaces formed by bending three portions of the sheet metal at right angles to each other. Since it is configured, corner fittings for joining the corners of the housing can be manufactured at low cost without requiring high processing accuracy.

Also, since the corner bracket is manufactured by casting from iron or aluminum metal, the plate thickness can be freely selected, and when it is manufactured in large quantities, it is easy to manufacture.

Embodiment 2. FIG.
FIG. 7 is an exploded perspective view showing the rear side corner portion of the floor board 2 of the board device casing according to the second embodiment. Since the shape other than the shape of the corner bracket is the same as that in FIG. 1 and FIG. 2 of the first embodiment, the same parts are denoted by the same reference numerals and the description thereof will be omitted.
The corner bracket 18 of the present embodiment is formed by connecting the left and right corner brackets of the first embodiment and integrating them. That is, of the joint surfaces of the corner bracket 6 according to the first embodiment, the joint surfaces extending in the width direction of the casing (in the case of the corner bracket 6, the

joint surfaces

6b and 6c) are extended in the width direction, This is a single corner fitting 18 that extends from one corner to the other corner.

Referring to FIG. 7, the corner bracket 18 of the present embodiment is configured such that the joint surface 18 a facing the bent portion 4 a of the left side plate 4 and the bent portion 5 a of the right side plate 5 is the same as the joint surface 6 a of the corner bracket 6. The joint surface 18b facing the bent portion 2b of the floor plate 2 and the joint surface 18c facing the floor surface of the floor plate 2 are provided over the entire length in the housing width direction, and are integrated with the left and right joint surfaces 18a. It has become.
The point that the plate thickness is doubled in the foundation fixing portion, the rivet hole, and the foundation hole are the same as those in the corner metal fitting 6 of the first embodiment.

Assembling, after the

side plates

4 and 5 and the floor plate 2 are combined, the joint surface 18a of the corner fitting 18 is aligned with the

bent portions

4a and 5a of the

side plates

4 and 5, and the

joint surfaces

18b and 18c are bent of the floor plate 2. Fix it with rivets according to the part 2b and the floor.
Similarly, the front side of the floor board 2 and the front and back corners of the top board 3 are assembled.
In addition, you may use the corner metal fitting 6 of Embodiment 1 for the top plate 3 side.

As described above, the number of parts can be reduced and the number of assembling steps can be further reduced by using one corner fitting 18 for the left and right corner portions.
In addition, since the plate thickness of the portion provided with the corner bracket 18 is increased over the entire length in the housing width direction, the rigidity and strength of the frame in the width direction of the floor plate 2 are further increased as compared with the first embodiment. It is possible to provide a highly rigid panel device casing. For this reason, for example, when the panel device casing 1 is installed on the site, even if a force is applied to the center of the floor plate 2 in the width direction by a bar or the like, deformation of the casing floor is prevented. Can do.

As described above, according to the board device housing of the second embodiment, the corner metal fitting that joins the side plate and the floor board is in the width direction of the board device housing among the joining surfaces that constitute the corner metal fitting. Since the extending joint surface is extended in the width direction to form a corner metal fitting that extends from one corner of the width direction to the other corner, the number of parts and the number of assembly steps can be reduced.
Further, the rigidity and strength of the frame in the width direction of the floor board can be increased.

Embodiment 3 FIG.
FIG. 8 is a perspective view showing a corner portion of the floor portion of the panel device housing according to the third embodiment, and FIG. 9 is a cross-sectional view showing the foundation fixing portion of FIG. Since it is a part corresponding to FIG. 2 of the first embodiment, the same parts are denoted by the same reference numerals, description thereof will be omitted, and differences will be mainly described.
When the panel device housing 1 is used as, for example, a switchgear housing, an external cable may be pulled in from the outside in order to exchange power with an internal main circuit device. The present embodiment can cope with such a case.

As shown in FIG. 8, the corner bracket 19 is the same as in the first embodiment in that the corner bracket 19 is divided for each corner, except that the joint surface 19c on the foundation fixing portion side is the center in the casing depth direction. The cable hole 20 for extending an outside line cable is provided in the extension part.
On the floor plate 2 side, an opening hole 21 of the same size is provided at a position corresponding to the cable hole 20.
Further, a hole cover 22 having an outer shape larger than the cable hole 20 is provided to close the cable hole 20. In order to fix the hole cover 22, a fixing hole 23 is formed in the hole cover 22, a screw hole 24 is formed in the corner bracket 19, and a screw hole 24 is formed on the floor surface of the floor plate 2. A relief hole 25 having a diameter larger than that of the screw hole 24 is formed at a corresponding position.

Since the fixing method using the corner bracket 19 is substantially the same as that of the first embodiment, detailed description thereof will be omitted, and different parts will be described below.
After attaching the corner bracket 19, the operation of drawing the external cable into the housing is to pass the external cable through the opening hole 21 and the cable hole 20 and through the hole cover 22 according to the size and number of the external cable. Then, the external cable is passed through the through hole, the cable hole 20 is closed with the remaining portion of the hole cover 22, and fixed by screwing.

FIG. 9 is a cross-sectional view showing the foundation fixing portion of FIG. The operation of the present embodiment will be described with reference to FIG.
Usually, the floor board 2 is not so thick. If the hole cover 22 is fixed directly to the floor board 2 by screwing, if the floor board 2 is thin, the fixing screw 26 penetrates the floor board 2 and the screw tip protrudes from the floor board 2 of the housing. Therefore, there is a problem that the floor surface of the electric room is damaged when the panel device is installed, or the floor board 2 is lifted. As countermeasures, it is conceivable that a spacer for preventing screw penetration is welded to the floor plate 2 or a steel plate portion for fixing the hole cover 22 is bent to float the fixing portion. There are problems that the number of parts increases and the manufacturing cost increases.

On the other hand, in the present embodiment, as shown in FIG. 9, a screw hole 24 for attaching the hole cover 22 to the corner bracket 19 is provided, and a relief hole is provided at the position of the floor plate 2 corresponding to the screw hole 24. Since 25 is provided, when the hole cover 22 is fixed by the fixing screw 26, it is possible to prevent the fixing screw 26 from bottoming out on the base surface.
As described above, in the present embodiment, the joint surface 19c of the corner bracket 19 is extended toward the center side in the depth direction of the casing, and the portion is used as an inlet for the external cable, so that the rigidity of the casing is increased. And also has a function of preventing the fixing screw 26 for fixing the hole cover 22 from bottoming out, which has the effect of reducing the number of parts and reducing the manufacturing cost.

In the description so far, considering the manufacturability, the corner bracket is fixed to the casing with a rivet. However, the corner bracket is fixed to the casing by bolting or welding. May be. In this case, although the manufacturability is deteriorated, it is possible to obtain a rigid-frame housing having higher rigidity.

As described above, according to the panel device housing of the third embodiment, the corner bracket that joins the side plate and the floor plate has the joint surface with the floor surface directed toward the center in the depth direction of the panel device housing. The cable hole for drawing the external cable and the screw hole for fixing the cover that closes the cable hole are provided in the extension, and the floor board has an opening hole at a position corresponding to the cable hole and a position corresponding to the screw hole. As with the first embodiment, it has the effect of increasing the rigidity of the housing and reduces the number of parts by using it in a housing that pulls in an external cable like a switch gear. And has the effect of reducing manufacturing costs.

In the present invention, within the scope of the invention, the embodiments can be freely combined, or the embodiments can be appropriately changed or omitted.

1 case for board device, 2 floor plate, 2a, 2b bent part, 2c end bent part,
3 Top plate, 4 Left side plate, 4a Bent part, 5 Right side plate, 5a Bent part,
6 corner fittings, 6a, 6b, 6c joint surface,
7, 8, 9, 10, 11, 12 Rivet hole, 13 Mounting hole,
14 hole for foundation, 15 foundation bolt, 16 nut, 17 hole for hanging bracket,
18 corner brackets, 18a, 18b, 18c joint surface, 19 corner brackets,
19c joint surface, 20 cable hole, 21 opening hole, 22 hole cover,
23 fixing holes, 24 screw holes, 25 relief holes, 26 fixing screws.

Claims

Formed in a rectangular parallelepiped shape by combining left and right side plates, floor plates, and a top plate, assembled to the inner corner portion of the corner metal fittings, the case for a panel device in which the side plates and the floor plate are joined,
The corner bracket has a plurality of joint surfaces that intersect at right angles to each other, and the joint surface with the floor surface of the floor plate is formed to be thicker than other joint surfaces, and provided with mounting holes for fixing the foundation. A cabinet for a panel device.
In the housing | casing for board apparatuses of Claim 1,
Further, the side plate and the top plate are joined to each other by assembling the corner fittings at the inner corners thereof, and the joining surfaces of the corner fittings joined to the ceiling surface of the top plate have other thicknesses. A casing for a panel device, characterized by being formed thicker.
In the housing | casing for board apparatuses of Claim 1 or Claim 2,
The corner metal fitting is manufactured by bending a sheet metal, and the joining surface for increasing the sheet thickness is formed by overlapping two of the curved surfaces formed by bending the three portions of the sheet metal at right angles to each other. A cabinet for a panel device, characterized by being configured.
In the housing | casing for board apparatuses of Claim 1 or Claim 2,
The case for a panel device, wherein the corner metal fitting is manufactured by casting from iron or aluminum metal.
In the housing | casing for panel apparatuses of any one of Claims 1-4,
The corner fitting that joins the side plate and the floor plate extends, in the width direction, a joining surface that extends in the width direction of the panel device casing among the joining surfaces constituting the corner fitting, A cabinet for a panel device, characterized in that the corner bracket is continuous from one corner in the width direction to the other corner.
In the housing | casing for panel apparatuses of any one of Claims 1-4,
The corner metal fitting for joining the side plate and the floor plate extends the joint surface with the floor surface toward the center in the depth direction of the panel device casing, and draws an external cable into the extension portion. A screw hole for fixing a hole and a cover that closes the cable hole is provided, and the floor board is provided with an opening hole at a position corresponding to the cable hole and a relief hole at a position corresponding to the screw hole. A cabinet for a panel device.