JPS596508Y2 - Device to prevent magnetic tape devices from falling during earthquakes - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for preventing a magnetic tape device from falling over during an earthquake.

Magnetic tape devices, which have the highest center of gravity among large computer systems, have a high risk of falling during an earthquake, so it is necessary to take measures to prevent them from falling.

Currently, there are two ways to prevent falls: one is to fix the magnetic tape device directly to the floor, and the other is to place it freely so that it slides sideways to absorb the vibrations and prevent it from falling over. Each method has its advantages and disadvantages.

For example, in the case of a method that is fixed directly to the floor, it can prevent it from falling over, but it has the disadvantage that large stress is generated in the entire magnetic tape device due to lateral shaking during an earthquake, which has a negative effect on internal parts. In the case of the method of placing the device on the floor, there is a high risk of it falling over, but it has the advantage of protecting the internal parts.

The present invention is characterized by a method of placing it freely on the floor, which reduces the risk of falling and also takes into consideration the mobility of the device during maintenance. The details are as follows.

Reference numeral 1 denotes a rectangular frame disposed below the bottom surface of the magnetic tape device, and 2 denotes caster fixing fittings attached to two sides of the long side frames 3 and 3' of the frame 1, respectively.

The caster fixing fittings 2 are comprised of a pair of arcuate abutting parts 4 and L-shaped flat surfaces extending from the mounting part 5 so that the casters of the magnetic tape device can be held down from the front and back (both sides). The long side frame 3 is fixed with bolts and nuts 6.
, 3' so that the distance can be adjusted freely.

The present invention is based on the above-mentioned structure, and FIG. 4 shows a state in which the present invention device is attached to the caster b of the magnetic tape device a. The long side frames 3 and ff are removed, and only the frame 1 is placed under the bottom surface of the magnetic tape device a.

Next, attach the caster fixing bracket 2 to the long side frames 3, 3' using bolts and nuts 6, and attach the abutment part 4 to the caster b.
Fix the bolts and nuts 6 by setting them loosely.

This state is shown in Fig. 5, where the upper part 4' of the contact part 4 of the caster fixing bracket 2 is in contact with the caster b, the lower part is slightly separated, and the frame 1 is slightly separated from the floor surface C. There is.

Further, as shown in FIG. 4, the juxtaposed magnetic tape devices are connected to each other by a connector e at the top of the head to achieve lateral integration.

Normally, by attaching the frame 1 to the magnetic tape device a in this manner, the fulcrum of the magnetic tape device a in the front-rear direction becomes wider by the distance L from the center of the caster b to the end of the frame 1. This increases stability and reduces the chance of falling.

Furthermore, since the frame 1 is attached to the caster b with the caster fixing bracket 2 and is not fixed to the floor C, when a horizontal force is applied to the magnetic tape device a, the caster b is attached to the floor C surface. Rolls to absorb horizontal forces and prevent or reduce overturning moments acting on the device.

Therefore, according to the present invention, stability is increased by expanding the fulcrum by the frame 1, and the caster b absorbs the overturning moment by rolling on the floor C surface, thereby reducing the risk of overturning during an earthquake. There is an effect that can be achieved.

Further, since the casters b are free, maintenance of the apparatus can be easily carried out by pulling out only one apparatus from among the apparatuses arranged side by side, which is also a convenient effect.

Next, since the present invention has a structure in which the frame 1 is attached to the caster b using the caster fixing fittings 2, there is no need to provide any structure on the magnetic tape device a side. Even if the device of the present invention is installed, this mark will not remain after removal.

[Brief explanation of the drawing]

Figure 1 is a plan view of the device of the present invention, Figure 2 is a side view, Figure 3 is a front view, Figure 4 is a front view of the device of the present invention attached to a magnetic tape device, and Figure 5 is the device of the present invention. FIG. 3 is a side view of a portion of the caster with the device attached; 1...Frame body, 2...Caster fixing bracket, 3, 3'...Long side frame, 4...Abutment part, 5... ...Mounting part, 6...Bolts and nuts, a...Magnetic tape device, b...
Caster C...Floor, e...Connector.

Claims (1)

[Scope of utility model registration request] The rectangular frame 1 is constructed by setting the long side frames 3, 3' longer than the front and back length of the magnetic tape device a, and the magnetic tape is attached to the outer surface of the long side frames 3, 3' of this frame 1. A fall prevention device for a magnetic tape device during an earthquake is provided by attaching a certain caster mounting bracket 2 from an arc-shaped abutting portion 4 and a mounting portion 5 that can support a caster b attached to the bottom of the device a from the front and back.