JPH0223032Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to an improvement of a rack for storing unit boxes equipped with electronic components. Conventionally, in electronic equipment such as computers and telephone exchanges, a plurality of unit boxes 5 containing electronic components have been housed in a rack of standard dimensions to form a system, as shown in Fig. 1. In this case, each unit box 5 is fixed to the vertical column 1 of the rack by screwing into a screw hole 4 previously opened for each standard pitch. However, as high-performance electronic components are being developed one after another, it becomes difficult to replace all or some of the unit boxes in a rack with new unit boxes to improve system performance.
If the new unit box is made to the same standards as the rack, there will be no problem in replacing the unit box. However, for example, the rack conforms to the JIS standard for general electronic equipment rack dimensions, and the new unit box to be replaced is If the item is imported from a foreign country and complies with EIA STANDARD, it may not be possible to replace it due to the relationship between the opening width of the rack and the width of the box. Furthermore, even if the opening width of the rack is formed to the maximum allowable dimension and the unit box can be accommodated,
The distance H between the screw insertion notches 6, 6 of the box does not match the pitch of the screw holes 4, 4 of the vertical column 1 of the rack, and the rack cannot be fixed. This invention allows easy opening width to meet EIA standards.
It can fit within the width of a rack according to JIS standards,
Also, depending on the type of rack, the external dimensions of the rack may be
Focusing on the fact that both EIA and JIS standards are almost unchanged, by devising Ratsuku's vertical pillars,
To provide a unit box storage rack in which unit boxes of either JIS or EIA standards housed in the rack can be fixed with screws. The present invention will be specifically described below based on embodiments shown in the drawings. As shown in Figure 1, the rack starts from vertical column 1 and horizontal column 2.

[Table] The dimensions of the unit box 5 to be accommodated in the above rack are shown in Table 2 below, comparing the dimensions of the JIS and EIA standards.

[Table] As can be seen from the table above, it is possible to manufacture a rack that meets the JIS standards and can accommodate EIA unit boxes. Further, the distance D between the screw holes 4, 4 of both vertical columns 1, 1 is also approximately equal. However, the distance H between the screw insertion notches 6, 6 formed in the front plate 51 of the unit box 5 is
JIS and EIA are different. In other words, according to the JIS standard, the interval H is
It is a multiple of 50mm, whereas in EIA it is 31.8mm,
57.1mm, 76.2mm, multiple of 15.9mm or 15.9mm
The JIS interval and the EIA interval do not correspond. Therefore, in the past, it was necessary to stock two types of racks: JIS standard racks and EIA standard racks, which placed a heavy burden on dealers. This application describes the screw 7 that stops the unit box 5.
The screw hole 4 is not opened in the vertical column 1 of the rack, but the plate 8 with the screw hole 4 is removably attached to the vertical column. To provide a unit box storage rack which can be stopped and whose plates can be easily replaced. The vertical column 1 is formed by cutting a drawn aluminum material to the required length, and as shown in FIG. A guide rod 1 having a U-shaped cross section and having guide grooves 9 that open outward from each other at the tips.
2 and 12 are formed. Each guide groove 9 has a retaining side 14 along its entire length.
14 project inwardly from each other and have a narrow opening width, which is slightly larger than the thickness of the plate 8. As shown in FIG. 5, the depth of the guide groove 9 is enlarged so that the plate 8 can be inserted at an angle from the opening of the groove 9 and turned over within the groove to bring the plate 8 into close contact with the retaining side 14. Also, one corner of the bottom of the groove is plate 8.
In order to guide the reversal of the groove, a circular arc-shaped guide surface 16 is formed over the entire length of the groove. Furthermore, when the plate 8 comes into close contact with the retaining side 14,
The groove width G' on the back surface of the retaining piece 14 is approximately equal to the width of the plate 8 so that the plate 8 does not move from side to side. The plate 8 is formed by cutting a long metal flat bar to a required length, and has screw holes 4 formed in a line. Screw hole 4 of plate 8 for JIS standard is 50
It is opened for each mm pitch. The screw holes 4 of the plate 8 for EIA standards are not of equal pitch as shown in Fig. 3, but have a pitch of 15.9 mm a,
Open three screw holes 4, 4, 4 through hole a, then open one screw hole 4a through hole b with a pitch of 12.7 mm, and repeat this regularly to create a large number of screw holes 4. , 4a has been established. However, it is easy to use JIS standard unit box 5.
Let us describe the case of accommodating. First, Rack's Vertical Pillar 1
Fit the JIS standard plate 8 into the guide groove 9.
Since the plate can be tilted and fitted from the side of the guide groove 9, it does not take up much space and is convenient. Next, a screw 71 shorter than the groove depth is screwed into one or more locations of the screw hole 4 of the plate 8, and the screw 71
The plate 8 can be fixed in the guide groove 9 by touching the tip of the plate 8 against the groove bottom 91 and pulling the plate 8 in close contact with the back surface of the retaining piece 14. From this, the unit box 5 can be fixed by inserting the screw 7 into the notch 6 of the unit box 5 and screwing it into the screw hole 4 of the plate 8 as shown in FIG. When replacing the unit box 5 with an EIA standard box, it is easy to do so by simply inverting the plate within the guide groove 9, removing it from the front of the vertical column 1, and replacing it with an EIA standard box. Of course, the height of the unit boxes 5 is different between the JIS standard and the EIA standard, so when the EIA standard unit boxes are placed in the rack from top to bottom, there will be a space at the bottom of the rack, but there will be a blockage large enough to hide the space. board (not shown)
If you cover the lower front of the rack with it, it won't look unsightly. Figure 6 shows the present invention implemented in a known open rack, in which two vertical columns 1, 1 are protruded from a base 10, and the upper ends of the vertical columns are connected by a horizontal rod 2. , the plates 8 with screw holes are attached to the guide grooves 9 on the front side of each vertical column 1 in the same manner as described above, and the short plates 8 with screw holes are attached to the guide grooves 9 on the back side.
The triangular reinforcing rod 15 is fixed using the screw hole of the plate. In the present invention, as described above, the plate 8 having the screw holes 4 at standard pitches is fitted into the guide groove 9 formed in the vertical column 1 of the rack. All you have to do is replace it with plate 8 with hole pitch.
The rack itself can be used as it is. Furthermore, when replacing the plate, the plate can be reversed within the guide groove 9 and easily taken out from the opening of the groove, whereas a new plate can be inserted from the opening of the groove and reversed within the groove. It can be easily installed.

[Brief explanation of the drawing]

Figure 1 is a slope view of the rack, Figure 2 is a cross-sectional view of the vertical column, Figure 3 is a front view of the EIA standard plate, Figure 4 is a cross-sectional view of the fixed part of the unit box, Figure 5
The figure is an explanatory diagram of the method of inserting the plate, and FIG. 6 is a perspective view of the open rack. 1... Vertical column, 4... Screw hole, 5... Unit box, 6... Notch, 8... Plate, 9...
guide groove.

Claims (1)

[Scope of utility model registration request] In a rack in which unit boxes are housed vertically and the front plate of each unit box can be screwed to vertical columns arranged on both sides, each vertical column 1 is provided with a guide groove 9 whose depth expands in the longitudinal direction. A plate 8 is fitted into the guide groove 9, in which a large number of screw holes 4 are aligned in a row in the longitudinal direction and are bored in accordance with the spacing between the screw insertion notches 6, 6 of each unit box 5. The opening width of the guide groove 9 is slightly wider than the thickness of the plate 8, and the inside of the guide groove 9 is formed wide enough to allow the plate 8 to be turned over. The guide groove 9
A unit box storage rack in which a plate is stretched against the bottom of the groove and fixed in the guide groove 9.