JP6913542B2 - Housing - Google Patents

Description

The present invention relates to a housing used as a system rack for electronic devices, and more particularly to a housing that has realized earthquake resistance and weight reduction.

Conventionally, there has been a housing in which an electronic device such as a server is arranged inside for the purpose of ensuring security, dustproofing, and the like. However, through the recent large-scale earthquake disasters, the demand for earthquake resistance of the housing is increasing.

For example, in the cabinet proposed in Patent Document 1, an upper horizontal depth frame and an internal vertical frame in which the upper and lower ends are connected to the lower horizontal frame are arranged on the left and right inside of the rectangular frame main body, and the front vertical frame is arranged. The internal vertical frame is connected to the depth reinforcement frame attached between the frame and the rear vertical frame, and the left and right sides of the frame body have a double frame structure. As a result, it is said to have resistance to left and right shaking.

Further, for example, the rack proposed in Patent Document 2 is a rack in which columns are erected on both the left and right sides between the upper and lower racks, and is arranged on the upper and lower racks so as to be bridged between the left and right columns. A reinforcing frame is provided, and the support and the upper frame, the support and the lower frame, and the reinforcing frame and the left and right columns are connected by a brace member. As a result, it is said to have earthquake resistance.

Japanese Unexamined Patent Publication No. 2003-93170 Japanese Unexamined Patent Publication No. 2014-107487

However, the techniques of Patent Documents 1 and 2 have a structure in which a double frame structure or a reinforcing frame is provided on the left and right sides of the frame frame body in order to make the cabinet or rack earthquake-resistant. For this reason, more members are used than in the past, the total weight of the cabinet or rack increases, and there is a problem in terms of lightness.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a housing that realizes earthquake resistance and weight reduction.

The housing according to the present invention for solving the above problems is a rectangular parallelepiped including columns arranged at at least four corners, an upper frame connected to the upper part of the columns, and a lower frame connected to the lower part of the columns. Alternatively, it is a substantially rectangular parallelepiped housing, and the support column is composed of a first square pipe and a sheet metal member closely attached to at least one of the outer surfaces of the first square pipe, and the first corner. The second square pipe is inserted only in the lower part of the pipe.

According to the present invention, the columns at the four corners of the housing are composed of the first square pipe and the sheet metal member closely attached to at least one of the outer surfaces of the first square pipe. It is possible to realize weight reduction and high strength. Further, since the second square pipe is inserted only in the lower portion of the first square pipe, the strength of the lower portion of the housing can be remarkably increased to improve the earthquake resistance, and the weight can be reduced.

In the housing according to the present invention, corner members are welded to the support column and the lower frame at the four corners where the support column and the lower frame are connected. According to the present invention, since the corner member is welded to the support column and the lower frame, the strength of the lower portion of the housing can be improved and the earthquake resistance can be improved.

In the housing according to the present invention, the length of the second square pipe is preferably within the range of 200 mm or more and 500 mm or less. According to the present invention, since the second square pipe having the above length is inserted in the lower portion of the first square pipe, it is possible to increase the strength and the earthquake resistance without increasing the weight.

In the housing according to the present invention, the lower frame is made of a square pipe. According to the present invention, since the lower frame is also composed of a square pipe, it is possible to improve the strength and reduce the weight as compared with the conventional one in which the sheet metal members are combined.

According to the present invention, it is possible to provide a housing that is earthquake resistant and lightweight. Specifically, since the columns at the four corners of the housing are composed of the first square pipe and the sheet metal member closely attached to at least one of the outer surfaces of the first square pipe, the weight of the housing is reduced. And high strength can be realized. Further, since the second square pipe is inserted only in the lower part of the first square pipe, the strength of the lower part of the housing can be remarkably increased to improve the earthquake resistance, and the second square pipe is in the lower part. Since it is inserted only in, weight reduction can be realized.

It is an external perspective view which shows an example of the housing which concerns on this invention. It is a perspective view which shows an example of the frame of the housing which concerns on this invention. It is a front view which shows an example of the housing which concerns on this invention. It is a cross-sectional view of AA which shows the double pipe structure part of the lower part of the housing which concerns on this invention. It is sectional drawing of the part which has a double pipe structure. It is sectional drawing of the part which does not have a double pipe structure. It is explanatory drawing which shows the form in which the corner member was welded to the four corners which connected the support column and the lower frame. It is the figure which looked at the concrete form of the welded corner member from the bottom side. It is a figure which shows the result of the vibration test of the housing of Example 1. It is sectional drawing of the column which shows the comparative example produced in the examination process. It is sectional drawing of the column which shows the other comparative example produced in the examination process.

The housing according to the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments.

[Basic configuration]
As shown in FIGS. 1 to 4, the housing 1 according to the present invention is used as a system rack for electronic devices, and has a support column 11 arranged at at least four corners and an upper portion connected to the upper part of the support column 11. It is a rectangular parallelepiped or a substantially rectangular parallelepiped shape including the frame 12 and the lower frame 13 connected to the lower part of the support column 11. The support column 11 is composed of a first square pipe 21 and a sheet metal member 41 closely attached to at least one of the outer surfaces 24 of the first square pipe 21, and is a lower portion of the first square pipe 21. The feature is that the second square pipe 31 is inserted only in 3.

In this housing 1, the columns 11 at the four corners are composed of the first square pipe 21 and the sheet metal member 41 closely attached to at least one of the outer surfaces 24 of the first square pipe 21. It is possible to reduce the weight and increase the strength of the body 1. Further, since the second square pipe 31 is inserted only in the lower portion 3 of the first square pipe 21, the strength of the lower portion 3 of the housing 1 can be remarkably increased to improve the earthquake resistance and reduce the weight. Can also be realized.

As shown in FIG. 1, the housing 1 according to the present invention used as a system rack for electronic devices is a rectangular cabinet having an opening / closing panel 4 on the front surface, and if necessary, vents and vents are provided. It has a ventilation slit. FIG. 2 shows the skeleton shape thereof. In addition to the skeleton portion composed of the support column 11, the upper frame 12, the lower frame 13, and the sheet metal member 41, the brace (diagonal member for reinforcement) 15 and the horizontal frame member 16 are shown. , The vertical frame member 17 is provided as needed. As a general system rack, a rack having a height of 1500 to 2350 mm, a frontage width of 550 to 650 mm, and a depth of 600 to 800 mm can be preferably mentioned.

Hereinafter, each component will be described in detail.

(Strut)
As shown in FIGS. 2 to 4, the columns 11 are provided at the four corners of the rectangular parallelepiped or substantially rectangular parallelepiped housing 1, and are arranged so as to extend in the vertical direction. Each of the columns 11 includes a first square pipe 21, a second square pipe 31, and a sheet metal member 41. The materials of the first square pipe 21, the second square pipe 31 and the sheet metal member 41 in the present invention are not particularly limited. For example, a steel material is desirable from the viewpoint of high strength and earthquake resistance, but an aluminum material may also be used.

(1st square pipe)
As shown in FIGS. 2 and 3, the first square pipe 21 is a square pipe having a square or substantially square cross section, and is composed of an inner surface 23 and an outer surface 24, and a hollow portion 22 is inside the inner surface 23. Exists. The first square pipe 21 is welded and fixed to the lower frame 13 and the upper frame 12 with a length that is the total length of the support column 11. A commercially available square square diameter steel pipe or rectangular square diameter steel pipe can be arbitrarily selected and applied to the first square pipe 21, and in the case of a system rack of the above size, a square or rectangular corner having a side of 20 mm to 60 mm can be applied. Diameter steel pipe is preferably used. In particular, a square square diameter steel pipe has no anisotropy, and is preferable from the viewpoint of strength against strong shaking from multiple directions and weight reduction.

(2nd square pipe)
As shown in FIG. 5, the second square pipe 31 is inserted only in the lower portion 3 of the first square pipe 21. The size of the second square pipe 31 may be the size of the outer surface 34 that can be inserted into the hollow portion 22 of the first square pipe 21, and may be about the same as the size of the inner surface 23 of the first square pipe 21. The insertion form is preferably a state in which the inner surface 23 of the first square pipe 21 and the outer surface 34 of the second square pipe 31 are in close contact with each other, but at least a part thereof may be in close contact with each other even if the entire surface is not in close contact with each other. “At least a part” is preferably two of the outer surfaces 34 of the second square pipe 31, and “close” is the inner surface 23 of the first square pipe 21 and the outer surface 34 of the second square pipe 31. It suffices if it is in the state of being hit. Therefore, when a square square steel pipe or a rectangular square steel pipe is used as the first square pipe 21, a square steel pipe having the same shape may be used for the second square pipe 31, or a square steel pipe having a different shape may be used. .. For example, when the first square pipe 21 is a square square steel pipe, the second square pipe 31 may also be a square square steel pipe. For example, when the first square pipe 21 is a square square steel pipe, the second square pipe 31 is It may be a rectangular square steel pipe.

As shown in FIG. 3, the length D of the inserted second square pipe 31 may be a predetermined length arranged in the lower portion 3, and the length corresponding to the size of the housing 1 may be long. Arbitrarily selected. In the housing 1 having a size of 1500 to 2350 mm described above, the length D of the second square pipe 31 is preferably in the range of 200 mm or more and 500 mm or less, and more preferably 200 mm or more and 400 mm or less. By inserting the second square pipe 31 having a length D only into the lower portion 3 of the first square pipe 21, the strength can be increased and the earthquake resistance can be improved without increasing the weight. As shown in FIG. 6, the second square pipe 31 does not exist in the first square pipe 21 above the lower portion 3 of the support column 11. Further, when the corner member 14 described later is welded to the four corners where the support column 11 and the lower frame 13 are connected, the corner member 14 is welded in the state where the corner member 14 is inserted into the first square pipe 21 (broken line portion in FIG. 8). ). Therefore, the second square pipe 31 is welded while being placed on the corner member 14.

(Sheet metal member)
As shown in FIGS. 3 to 6, the sheet metal member 41 is closely attached to at least one of the outer surfaces 24 of the first square pipe 21. "At least a part" is a range in which the outer surface 24 of the first square pipe 21 can be grasped and attached, that is, as shown in FIG. 5, one surface in close contact with the entire surface and both sides of the one surface. It is preferable that they are attached so as to be in close contact with each surface at least halfway (for example, up to 1/2 or more of each surface). In the example of FIG. 5, when FIG. 5 is viewed in a plan view, the entire surface of the left outer surface 24 and the lower outer surface 24 is in close contact with the sheet metal member 41, and the upper outer surface 24 is about 2/3 of the sheet metal. The members 41 are closely attached to each other by gripping the first square pipe 21.

The sheet metal member 41 is attached to the first square pipe 21 with the same length or substantially the same length as the first square pipe 21 constituting the support column 11. The substantially same length includes the case where the upper frame 12 and the lower frame 13 or the vicinity thereof may not be provided. Since the sheet metal member 41 is attached to the first square pipe 21 within such a range, the weight and strength of the housing 1 can be reduced as compared with the case of the comparative study example described later. As shown in FIG. 3, the sheet metal member 41 is provided with many holes 42 in order to make it lighter, but at least the lower portion 3 of the support column 11 into which the second square pipe 31 is inserted is provided. Therefore, it is desirable that the holes 42 are not provided in order to give priority to strength.

The material of the sheet metal member 41 is not particularly limited, but a high-strength steel plate bent and sheet metal is used. The thickness thereof is, for example, about 0.8 to 2.6 mm. The upper end of the sheet metal member 41 is connected to the upper frame 12 or the upper portion 2 of the first square pipe 21 by welding or screwing, and the lower end of the sheet metal member 41 is connected to the lower frame 13 or the first square pipe. It is connected to the lower portion 3 of 21 by welding or screwing.

(Upper frame and lower frame)
As shown in FIGS. 2 and 3, the upper frame 12 is welded to the four first square pipes 21 which are the columns 11 at the upper part of the housing 1. Since the upper frame 12 does not need to be as strong as the lower frame 13, it may be a square pipe similar to the first square pipe 21 or a sheet metal member similar to the sheet metal member 41. The sheet metal member is advantageous in terms of weight reduction, and the frame 51 may be provided with a plurality of holes 52 in order to make the frame lighter.

As shown in FIGS. 2 and 3, the lower frame 13 is welded to the four first square pipes 21 which are the columns 11 at the lower part of the housing 1. Since the lower frame 13 requires strength unlike the upper frame 12, it is preferably a square pipe (referred to as a third square pipe 61) similar to the first square pipe 21. Since the third square pipe 61 is disadvantageous in terms of weight reduction, a plurality of holes 52 may be provided in order to provide lighter weight.

(Other parts)
As shown in FIG. 7, it is desirable that the corner member 14 for reinforcement is welded to the corner of the lower frame 13 of the housing 1, and the corner member 14, the first square pipe 21, and the first square pipe 21 thereof are preferably welded. The third square pipes 61 and 61 extending in two directions are integrated to increase the strength and improve the earthquake resistance. The corner member 14 has a triangular shape that matches the corner shape so that it can be easily welded to the first square pipe 21 and the third square pipe 61, and the thickness thereof is preferably about 5 to 20 mm. As shown in FIG. 7, the corner member 14 is provided on the auxiliary plate 18, and is welded to the first square pipe 21 and the lower frame 13 together with the auxiliary plate 18.

Specifically, a notched portion is formed so that the positions on the lower end side of the lower frame 13 and the first square pipe 21 are at the same height as the thickness of the corner member 14. Then, a part of the corner member 14 is inserted into the notch, and the corner member 14, the lower frame 13, the first square pipe 21, and the auxiliary plate 18 are welded so as to be integrated. As shown in FIG. 8 showing a state in which the housing 1 is viewed from the bottom surface, the corner member 14 has a first corner in a state where a part (broken line portion) is inserted into the notch portion provided in the first square pipe 21. It is welded to the pipe 21, and then welded in a state where another part (broken line portion) is inserted into the notch provided in the lower frame 13. Therefore, the corner member 14 shown in FIG. 7 is a portion of the corner member 14 shown in FIG. 8 indicated by a solid line. By welding the corner member 14 using such a method, the area for welding the corner member 14, the lower frame 13 and the first square pipe 21 can be increased, and therefore these members are integrated. The strength can be increased. Since the purpose of FIG. 8 is to clearly show how the corner member 14 has entered the notch, the description of the auxiliary plate 18 shown in FIG. 7 is omitted.

A hole 25 is provided in the central portion of the corner member 14, and the auxiliary plate 18 is provided with a hole of the same or the same size at a position corresponding to the hole 25. As a result, the housing 1 can be fixed to the floor surface by passing bolts or the like through the holes 25. In this case, since the corner member 14 is a member that transmits vibration from the floor surface to the housing 1, it is the member that receives the most load among the members constituting the housing 1. Therefore, as described above, the thickness of the corner member 14 is preferably about 5 to 20 mm.

As shown in FIG. 2, the housing 1 may be provided with braces (diagonal members for reinforcement) 15, horizontal frame members 16, and vertical frame members 17 in any size and number, if necessary.

As shown in FIG. 3, the support column 11 is provided with a mounting member 43 which is a sheet metal member. The mounting member 43 is for mounting an electronic device or the like, and the electronic device can be mounted by screwing or the like with a mounting hole provided in the mounting member 43. As shown in FIG. 7, it is preferable to weld the reinforcing auxiliary member 19 to the mounting member 43. Further, it is preferable to weld the reinforcing auxiliary member 20 to the mounting member 43 and the lower frame 13. The reinforcing auxiliary member 20 acts to prevent the support column 11 from falling, and the reinforcing auxiliary member 19 acts to reinforce the mounting member 43.

As described above, the housing 1 according to the present invention can realize earthquake resistance and weight reduction. Specifically, since the columns 11 at the four corners of the housing 1 are composed of the first square pipe 21 and the sheet metal member 41 closely attached to at least one of the outer surfaces 24 of the first square pipe 21. , The weight and strength of the housing 1 can be increased. Further, since the second square pipe 31 is inserted only into the lower portion 3 of the first square pipe 21, the strength of the lower portion 3 of the housing 1 can be remarkably increased to improve the earthquake resistance, and the second Since the square pipe 31 is inserted only in the lower portion 3, weight reduction can be realized.

The present invention is not limited to the configuration described in the above-described embodiment, but also includes other embodiments and modifications that can be considered within the scope of the matters described in the claims. Further, various changes and combinations of the above-described embodiments may be made as long as they do not deviate from the gist of the present invention.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

[Example 1]
The housing 1 according to the present invention shown in FIG. 2 was manufactured. First, four 45 mm square square steel pipes with a length of 2000 mm and a wall thickness of 1.6 mm are prepared as the first square pipe 21, and four 40 mm square square steel pipes with a length of 240 mm and a wall thickness of 1.6 mm are used as the second corner. A pipe 31 was prepared, and a steel plate having a length of 1930 mm and a wall thickness of 1.6 mm was prepared by sheet metal processing in the form shown in FIG. Further, a triangular corner member 14 having a thickness of 16 mm was prepared by cutting into the form shown in FIG. Further, an upper frame 12 obtained by sheet metal processing of a 1.6 mm thick steel plate into the form shown in FIG. 2 is prepared, and two 75 mm × 45 mm rectangular square steel pipes having a length of 550 mm and a wall thickness of 1.6 mm and a length of 550 mm are prepared. Two 75 mm × 45 mm rectangular square steel pipes having a wall thickness of 440 mm and a wall thickness of 1.6 mm were prepared as the third square pipe 61. Further, the brace (reinforcing diagonal member) 15, the horizontal frame member 16, and the vertical frame member 17 in the form shown in FIGS. 2 and 7 were prepared. In Example 1, each of these members is made of steel plate, but may be made of aluminum.

The second square pipe 31 is inserted into the lower portion 3 of the first square pipe 21 and welded from the holes provided on the side surface of the first square pipe 21 to be integrated, and then rivets are placed on all the members shown in FIG. After assembling using, the necessary parts were welded. In this way, by first assembling using rivets, welding can be performed in a state where the dimensions and right angles of each part are determined. Further, at the time of welding, as shown in FIG. 2, by providing a welding hole 26 in the sheet metal member 41 and welding from the welding hole 26, a plurality of types of members can be integrated to increase the strength. In this way, the housing 1 having a height of 2000 mm, a frontage width of 650 mm, and a depth of 600 mm was produced. The total weight of the obtained housing 1 was 129 kg in the form shown in FIG.

(Tests and results)
The seismic test divides the seismic risk area in North America into five stages, Zone 0 to 4, in NEBS (GR-83-CORE, former AT & T R & D department, design requirements for telecommunications carriers specified by Bell Laboratories). , Each response spectrum was measured and evaluated as to whether or not the most dangerous Zone 4 could be cleared. In addition, the prescribed criteria can be cleared under all conditions of "Kobe seismic wave""seismic intensity 7", "Chuetsu seismic wave""seismic intensity 7", and "Tohoku region Pacific Ocean offshore seismic wave""seismic intensity 7". I also evaluated whether it was. The result is shown in FIG. As shown in the result of the vibration test of FIG. 9, all the conditions were satisfied, and the weight was also reduced.

If the second square pipe 31 is inserted in all the longitudinal directions of the first square pipe 21 to form a double pipe structure and a sheet metal member 41 is further added to form a triple structure, the case of Comparative Examples 1 and 2 described later will be applied. Although the earthquake resistance and strength can be further improved, the weight increases and the weight cannot be reduced, and the cost cannot be reduced.

[Comparative Example 1]
A housing having a strut structure shown in FIG. 10 was produced. First, a steel plate having a length of 2000 mm and a wall thickness of 1.6 mm is prepared by sheet metal processing in the form shown by reference numeral 71a in FIG. 10, and a steel plate having a length of 2000 mm and a wall thickness of 1.6 mm is shown by reference numeral 71b in FIG. A steel plate with a length of 2000 mm and a wall thickness of 1.6 mm was prepared as a form with sheet metal processing, and a steel plate with a length of 2000 mm and a wall thickness of 4.5 mm was prepared as shown by reference numeral 71c in FIG. Was prepared by sheet metal processing in the form shown by reference numeral 71d in FIG. Other than this, as in the first embodiment, the upper frame 12, the lower frame 13, the corner member 14, the brace (diagonal member for reinforcement) 15, the horizontal frame member 16, and the vertical frame member 17 in the modes shown in FIGS. 2 and 7. Prepared.

Each of the four sheet metal members of reference numerals 71a, 71b, 71c, and 71d is fitted and welded or screwed, and further, an upper frame 12, a lower frame 13, a brace (diagonal member for reinforcement) 15, a horizontal frame member 16, and a vertical frame member. 17 was welded or screwed. In this way, a housing 1 having a height of 2000 mm, a frontage width of 650 mm, and a depth of 600 mm was produced. The total weight of the obtained housing 1 was 265 kg. Unlike the housing of the first embodiment, this housing is a combination of four sheet metal members 71, and therefore, although it has earthquake resistance as the housing 1, the total weight of the entire housing 1 is significantly increased. I have.

[Comparative Example 2]
A housing having a strut structure shown in FIG. 11 was produced. First, four 40 mm square square steel pipes having a length of 2000 mm and a wall thickness of 1.6 mm are prepared as the square pipes 81 shown in FIG. 11, and further, a steel plate having a length of 2000 mm and a wall thickness of 3.2 mm is prepared by reference numeral 82a in FIG. A steel sheet having a length of 2000 mm and a wall thickness of 2.0 mm was prepared by sheet metal processing in the form shown in FIG. 11 and having a thickness of 2.0 mm. Other than this, as in the first embodiment, the upper frame 12, the lower frame 13, the corner member 14, the brace (diagonal member for reinforcement) 15, the horizontal frame member 16, and the vertical frame member 17 in the modes shown in FIGS. 2 and 7. Prepared.

Two sheet metal members of reference numerals 82a and 82b are fitted to the square pipe 81 and welded or screwed, and further, an upper frame 12, a lower frame 13, a brace (diagonal member for reinforcement) 15, a horizontal frame member 16, and a vertical frame member. 17 was welded or screwed. In this way, a housing 1 having a height of 2000 mm, a frontage width of 650 mm, and a depth of 600 mm was produced. The total weight of the obtained housing 1 was 189 kg. Unlike the housing of the first embodiment, this housing is a combination of the square pipe 81 and the two sheet metal members 82a and 82b, so that the weight of the housing 1 as a whole is lighter, but the housing of the first embodiment is lighter. It did not have a double pipe structure like the one shown in the above, and was deformed by vibration in the left-right direction, causing some damage and inferior in earthquake resistance.

As described above, in the housing of the first embodiment, the support columns 11 at the four corners of the housing 1 are closely attached to at least one of the first square pipe 21 and the outer surface 24 of the first square pipe 21. When integrated with 41, the weight and strength of the housing 1 could be increased. Since the second square pipe 31 is inserted only into the lower portion 3 of the first square pipe 21, the strength of the lower portion 3 of the housing 1 can be significantly increased to improve the earthquake resistance, and the weight can be reduced. ..

1 Housing 2 Upper part 3 Lower part 4 Opening and closing panel 11 Strut 12 Upper frame 13 Lower frame 14 Corner member 15 Brace (diagonal lumber for reinforcement)
16 Horizontal frame member 17 Vertical frame member 18 Auxiliary plate 19, 20 Reinforcing auxiliary member 21 1st square pipe 22 Hollow part 23 Inner surface 24 Outer surface 25 Hole 26 Welding hole 31 2nd square pipe 32 Hollow part 33 Inner surface 34 Outer surface 41 Sheet metal member 42 holes 43 mounting member 51 frame 52 holes 61 third square pipe 71 (71a, 71b, 71c, 71d) sheet metal member 81 square pipe 82 (82a, 82b) sheet metal member

Claims (4)

A rectangular parallelepiped or substantially rectangular parallelepiped housing including columns arranged at at least four corners, an upper frame connected to the upper part of the column, and a lower frame connected to the lower part of the column.
The support column is composed of a first square pipe and a sheet metal member that is closely gripped on at least one of the outer surfaces of the first square pipe, and the second square pipe is provided only in the lower portion of the first square pipe. A housing characterized by being inserted. The housing according to claim 1, wherein corner members are welded to the support column and the lower frame at the four corners where the support column and the lower frame are connected. The housing according to claim 1 or 2, wherein the length of the second square pipe is within the range of 200 mm or more and 500 mm or less. The housing according to any one of claims 1 to 3, wherein the lower frame is made of a square pipe.

Images