KR20190036675A - The seismic damping device of the server rack - Google Patents

Abstract

The present invention relates to a seismic isolation device of a server rack, which is installed at a lower portion of the server rack to safely protect the server rack from an earthquake in the event of an earthquake and minimize damage to the server rack. The present invention comprises: a sliding member(1) made of a low-friction material, comprising a pair of sliding sheets(11, 11′) to which sliding surfaces(12, 12′) are coupled in close contact to face each other; a return suspender(2) restricting a relative displacement amount between the sliding sheets(11, 11′) and returning the sliding sheets(11, 11′) which are relatively displaced, to an origin point; a vibration isolation rubber mat(3, 3′) coupled to an upper and lower portions of the sliding member(1) to support the sliding member(1); a load distribution plate(4) coupled to an upper surface of the upper vibration isolation rubber mat(3); and, a base mat(5) coupled to a lower surface of the lower vibration isolation rubber mat (3′).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a seismic-

The present invention relates to a seismic isolation system for a server rack, and more particularly, to a seismic isolation system for a server rack, which is installed at a lower portion of a server rack to protect a server rack from an earthquake and minimize damages to the server rack ≪ / RTI >

In general, an earthquake not only causes a lot of damage such as collapse of a building and damage of a building, but fortunately, even if a building does not collapse, an earthquake causes enormous damage to the inside of a building and surrounding facilities.

One example of conventional countermeasures and methods for preventing such earthquake damage was to physically fix facilities to be subjected to earthquake damage. For example, it was a facility to fix the lathe type by attaching it to the wall. However, despite these facilities, the seismic force is composed of unknown cycle, speed, and displacement. Therefore, even if the shelf is fixed on the wall, the collapse prevention measures against the seismic force can not be prevented. Could not be expected.

In order to prevent earthquake damage, the buildings themselves are designed to be earthquake-proof, vibration-damping, and earthquake-proof. However, these technologies can not be applied to existing buildings because they can not be applied at the time of new construction. Accordingly, techniques for preventing direct transmission of earthquakes to furniture in buildings other than the buildings, that is, seismic devices for absorbing the shaking of the earthquake by being sandwiched between the floor surface and furniture have been variously practiced in the prior art. As a concrete example, a device for absorbing the shaking of the bottom surface by using a stacked rubber body (Reference 1), a device for keeping furniture and the like in a non-contact state by using a magnetic floating mechanism (Reference 2) (Reference 3), a device for moving furniture or the like using a movement by a roller (Reference 4), and the like.

And various seismic isolation, anti-vibration, and vibration suppression devices as described below.

References 5; Vibration and shock transmitted through the anti-vibration device are attenuated by the shock absorbing pad, so that the cubicle operates normally even in vibration and shock, thereby improving the life of the power distribution device and smoothly distributing the electric power. And a distribution board with a vibration preventing device for distributing it to a necessary place.

References 6; A plurality of ball bearings located between the top plate and the bottom plate, the steel balls being in point contact with the top plate to support the horizontal displacement movement of the top plate in rolling contact; And one or more high-damping rubbers, one end of which is fixed to the bottom plate and the other end is fixed to the top plate to return the top plate displaced by the viscoelastic restoring force to the home position.

References 7; A second table provided with a second guide groove which is spaced apart from a first table provided with the first guide grooves, and the like, and is transmitted by the frictional force due to the load of the computation equipment, communication equipment, precision measuring equipment, There is disclosed an isolation device for absorbing even minute vibrations to provide a seismic effect.

References 8; Vibration-proof performance that attenuates mechanical vibration or vehicle vibration transmitted to shock-sensitive advanced equipment and vibration-proof performance that damps vertical component vibration such as earthquake, which has a much larger energy amount, and vertical seismic vibration reduction device. have.

References 9; It is possible to actively attenuate and absorb vibration not only in the vertical direction due to the earthquake but also in the horizontal direction and to block the resonance that may be generated in the vibration attenuation or absorbing means and to accurately measure the device displacement in the transmission / Which is provided with a means for detecting whether or not the damage of the apparatus is caused to some degree even before a full-scale diagnosis.

References 10; Seismic and earthquake resistant structures with anti-seismic and anti-seismic structures to prevent vibration and seismic damage by reducing seismic and earthquake-induced vibrations acting on substations (high-pressure, low-pressure, motor control panel, , An electric motor control board, a distribution board).

References 11; It minimizes cable tensioning or shrinking when the switchboard is shaken by an earthquake or an external shock. It can prevent cable damage. When the ground is flooded by earthquake or external factors, it is transmitted from the ground to the switchboard. A seismic switchboard using a nonlinear earthquake-resistant spring and a vibration-absorbing cable support device capable of protecting the switchboard by buffering the vibration as much as possible.

(In the present invention, devices referred to in various terms such as the seismic isolation device, the damper device, the vibration isolation device, and the like for preventing earthquake damage, which have been described above,

In the meantime, the present invention relates to a server rack, which refers to a rack of an international standard (IEC) for mounting a network equipment including a server and a computer equipment, and a server rack, a hub rack, Communication racks, network system racks, CCTV racks, and multi racks, depending on the external size of the computer equipment, 19-inch racks, 21-inch racks and so on.

In addition, depending on the functions provided, it is possible to use a sealed rack (a rack that provides a dust inflow and shutoff function), a seismic rack (a rack with vibration prevention function against an earthquake), EMP shielding force (electromagnetic pulses, EMC shelter racks (EMC reduces the noise of electronic devices to prevent them from affecting the operation of other electronic devices, and prevents other electronic devices from being damaged. An EMI shielding rack (a rack with electromagnetic shielding), a non-vibration rack (a rack with the ability to prevent external physical shaking for ships and vehicles) And so on. In the present invention, the above-mentioned various kinds of racks are collectively referred to as server racks.

As described above, the server rack is equipped with highly integrated and high-performance computerized equipment, which can cause fatal outages such as system stoppage and malfunction when the vibration is applied as it is during an earthquake.

However, existing seismic isolation devices can not safely protect server racks from earthquakes, and there is no development of seismic isolation devices for protecting server racks.

Therefore, it has been required to develop a seismic isolation device for a server rack that can safely protect the server rack from earthquakes by preventing the vibration caused by the earthquake from affecting the server rack as much as possible.

(Reference 1) Japanese Unexamined Patent Publication No. 2011-099544. May 18, 2011. (Reference 2) Japanese Unexamined Patent Publication No. 2010-223284. 2010.10.07. (Reference 3) Japanese Unexamined Patent Publication No. 2010-203594. September 16, 2010. (Reference 4) Japanese Unexamined Patent Publication No. 2008-309206. December 25, 2008. (Reference 5) Korean Registered Patent No. 10-1282201, Jul. (Reference 6) Korean Patent Registration No. 10-1384027, Apr. 2014, (Reference 7) Korean Registered Patent No. 10-152855, Jun. (Reference 8) Korean Patent Publication No. 10-1510214, 2015.04.08. (Reference 9) Korean Registered Patent No. 10-1582313, Jan. 201, 2015. (Reference 10) Korean Patent Publication No. 101730418, Apr. 26, 2017. (Reference Document 11) Korean Patent Publication No. 10-1757831, Jul.

As described above, the conventional seismic isolation device for preventing earthquake damage has disadvantages such as complicated structure, and it is difficult to positively apply it to a server rack in which the size of the seismic damage is large or small according to the scale of the computer equipment, Respectively.

Accordingly, unlike the conventional seismic isolation devices, the present invention is advantageous in that it is simple in construction and easy to install, and is cost-effective. Also, the present invention can be applied to a large-sized server rack, To provide a seismic isolation device for a server rack having a structure.

According to an aspect of the present invention, A sliding member made of a low friction material and composed of a pair of sliding sheets, the sliding surfaces of which are closely contacted with each other; A return suspension panda for restricting a relative displacement amount between the sliding sheets and returning the sliding seat relatively moved to an origin; A vibration-proof rubber mat coupled to the sliding member to support the sliding member; A load distribution plate coupled to an upper surface of the upper anti-vibration rubber mat; And a base mat coupled to the lower surface of the lower anti-rubbing rubber mat.

The present invention can be manufactured with a simple structure, and the installation cost is low, and it can be installed indoors and outdoors, so that it is easy to handle and manage.

Particularly, the present invention can provide both a long and short cycle life as well as providing an extremely lightweight and simple structure of an isolation device using a sliding material,

In addition, there is no resonance in the long-term earthquake, and it is expected that Z-axis shock mitigation, minimization of Z-axis movement, and expandable product standard can be applied to various industrial equipment as well as large and small size server racks. have.

In addition to the above, the structure is simple, the cost is low, and it is very easy to install, dismantle, and manage, and can be applied to various objects in various industrial fields as well as server racks. And is easy to maintain and can be used for a long period of time.

Fig. 1 is a perspective view of a main part separation perspective view showing an embodiment of the present invention.
2 is an exploded perspective view showing an embodiment of the present invention.
3 is an exploded perspective view of the one-
Figure 4 is a cross-sectional view
Figures 5 and 6 show cross-
Figure 7 is an exploded perspective view of some alternative embodiments of the present invention.
FIG. 8 is a perspective view showing the structure of the present invention,
FIGS. 9 to 11 and FIGS. 12 to 14 are views showing a state of use

The present invention relates to an anti-friction material comprising a sliding member made of a sliding sheet of a low friction material and an anti-vibration rubber mat for supporting the sliding member, wherein the sliding surface of the sliding sheet is caused by an earthquake transmitted from the bottom surface by sliding action of the sliding member It is characterized in that the seismic isolation device of the server rack is configured to reduce vibration.

The sliding member formed of a pair of the upper and lower sliding sheets is made of a low friction material and is brought into sliding contact with the sliding surfaces so as to be slid to each other.

The sliding member restricts a relative displacement amount between the pair of sliding sheets, and also combines the home position return suspension panda (hereinafter, referred to as a return suspension pan) to return the relative sliding seat to the home position.

The pair of sliding sheets adhere vibration-absorbing materials such as rubber to upper and lower portions thereof to thereby bond a vibration-proof rubber mat (ballaster Mat) so as to absorb vibrations in a vertical direction due to an earthquake.

A load distribution plate for dispersing a load due to the load of the server rack may be coupled to the upper surface of the vibration proof rubber mat, and a non-slip mat may be coupled to the upper surface of the load distribution plate.

In addition, a base mat for placing on the bottom surface is attached to the bottom of the bottom anti-vibration rubber mat.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view showing an embodiment of the present invention, FIG. 3 is an exploded perspective view of an embodiment of FIG. 2, and FIG. 4 is a sectional view of an embodiment of the present invention. And Figs. 5 and 6 are sectional views of the present invention.

The sliding member 1 is configured such that sliding surfaces 12 and 12 'of low friction materials, that is, sliding sheets 11 and 11' made of sliding materials are butted against each other and slide sliding between the sliding sheets 11 and 11 ' So that vibrations transmitted from the floor when an earthquake occurs can be reduced.

The sliding member 1 absorbs the shaking of the earthquake between the upper and lower pairs of the sliding sheets 11 and 11 'so that the coefficient of friction between the two sliding sheets 11 and 11' It is desirable that the static frictional coefficient of the sliding surfaces 12, 12 'of the facing sheets 11, 11' is as low as possible.

To this end, in the embodiment of the present invention, both of the sliding sheets 11 and 11 'use a fluororesin sheet (PTFE SHEET) having a thickness of about 0.075 mm.

Examples of the fluororesin material constituting the fluororesin sheet include tetrafluoroethylene (PTFE), fluorinated ethylene propylene copolymer (FEP), tetrafluoroethylene-ethylene polymer (ETFE), polyvinylidene fluoride (PVDF) Ethylene-perfluoroalkyl vinyl ether polymer (PFA), and the like.

According to the present invention, the combination of the fluororesin sheets as the material of the sliding sheets 11 and 11 'exhibits the lowest friction coefficient. However, the utilization of the ultra-high molecular weight polyethylene sheet (molecular weight of not less than 1,000,000) I can think. When a pair of sliding sheets 11 and 11 'are combined with a fluororesin sheet and an ultra-high molecular weight polyethylene sheet, the coefficient of friction between them is about 0.25. When these ultra-high molecular weight polyethylene sheets are combined with each other, the coefficient of friction drops to about 0.4. In the future, when a sheet material having a low coefficient of friction is newly developed, it is more easily applied to the present invention, and the present invention does not exclude the application of the material.

In the present invention, the static friction coefficient between the sliding sheets 11 and 11 'is preferably about 0.4 or less.

As described above, the sliding member 1 is made of a low friction material and is brought into sliding contact with the sliding surfaces 12 and 12 'to face each other to generate sliding.

The sliding member 1 restricts a relative displacement amount between the pair of sliding sheets 11 and 11 'and restores the relative positions of the sliding sheets 11 and 11' (Hereinafter referred to as " return suspension panther ").

The resuscitation panda 2 can be made of a material of an elastic coupling part, for example, a rubber band. The sliding pads 2 and the sliding sheets 11 and 11 'coupled to each other are connected to each other to connect the sliding sheets 11 and 11'. That is, as shown in the drawing, the relative displacement amounts of the pair of sliding sheets 11 and 11 'are crossed by crossing the sliding sheets 11 and 11', and the relative movement of the sliding sheets 11 and 11 ' .

To this end, the center of the return suspension panda 2 is fixed to the center of the upper and lower surfaces of the upper and lower sliding sheets 11 and 11 ', thereby restricting the relative displacement about the fixed center and returning the relative movement to the home position.

The sliding member 1 constituted by the pair of sliding sheets 11 and 11 'is formed by bonding a vibration absorbing material such as rubber to the top and bottom to absorb a vibration in a vertical direction due to an earthquake, (3, 3 ').

The anti-vibration rubber mats 3, 3 'are made of a cushion material and have an upper and lower double structure as shown in the example.

The first mats 31 and 31 'connected to the sliding member 1 are divided into several parts so as to secure a passage to which the return suspension panda 2 coupled in a cross shape connected to the four sides of the sliding member 1 is coupled. .

That is, the first mats 31 and 31 'are divided into the sliding sheets 11 and 11' in such a manner that the return suspension paddle 2 of the sliding member 1 is sufficiently drawn in, Bonded with an adhesive or the like.

The second mat (32, 32 ') is fixed to the rear surface of the first mat (31, 31') with adhesive or the like.

The anti-vibration rubber mats 3, 3 'can be formed by integrally molding the first mats 31, 31' and the second mats 32, 32 '. At this time, To be able to make room for

A load distribution plate 4 for dispersing a load due to the load of the server rack R is coupled to the upper surface of the vibration-proof rubber mat 3 on the upper side.

The load distribution plate 4 is made of a material such as an iron plate having excellent bending strength so as to disperse the vertical load caused by the load of the server rack (R).

The load on the server rack (R) is dispersed through the respective corner points, not on the plane, around the legs (casters) at the corners. The loads of the server racks (R) are concentrated locally so that sliding It can be prevented from being smoothly operated. So that the load distribution plate 4 is correspondingly dispersed with a high stress so that such stress is not locally concentrated.

That is, since the load distribution plate 4 made of a steel material having a high bending strength is rigid, the load of the server rack R loaded thereon is floated up and dispersed to prevent the stress from concentrating, .

The load-distributing plate 4 may be fixedly coupled to the upper surface of the vibration-proof rubber mat 3 by an adhesive or the like so as to be fixed on the upper vibration-damping rubber mat 3, 3 is accommodated and the vibration proof rubber mat 3 is coupled to the inside thereof so that it can be inserted and fixed.

At this time, it is natural that slip should not occur between the anti-rubbing rubber mat 3 and the load distribution plate 4. [

It is a matter of course that the upper surface of the load distribution plate 4 can be combined with a non-slip mats (not shown) of various materials and structures for preventing slipping of the server rack R mounted thereon.

In addition, a base mat 5 to be placed on the bottom surface of the building is fixedly joined to the lower portion of the vibration-proof rubber mat 3 'by an adhesive or the like.

The base mat (5) provided so as to be in contact with the bottom surface is preferably made of a flexible material capable of absorbing the unevenness of the floor surface itself and being in close contact with the floor surface, and preventing moisture penetration from the bottom surface of the concrete It is preferable to use a waterproof material as well. In other words, it is preferable to be made of a material having flexibility and waterproof property, absorbing irregularities by a cushion action, preventing moisture penetration, and having excellent durability.

The seismic device of the above-described configuration is constituted by a sandwich structure in which the sliding sheets 11, 11 'of the sliding member 1 are sandwiched between the vibration proof rubber pads 3, 3', and their sliding action corresponds to the horizontal vibration In addition, the anti-vibration rubber pad 3, 3 'performs a damping action in accordance with the material, thereby exhibiting a seismic effect that absorbs vibration in the vertical direction during an earthquake. This will be discussed in more detail.

When a shaking motion is transmitted to the floor by the occurrence of an earthquake, the vibration is transmitted to the base mat 5 and is transmitted to the fixed sliding member 1 which is tightly coupled. More specifically, to the lower sliding sheets 11 and 11 '.

Since the sliding surfaces 12 and 12 'closely contacted between the upper and lower sliding sheets 11 and 11' of the sliding member 1 are low in friction coefficient, the upper sliding sheet 11 can transmit the vibration from the bottom surface to a certain extent. (Sliding) between the sliding sheets 11 and 11 'when the sliding distance exceeds the limit.

Therefore, the upper sliding sheet 11 in close contact with the upper anti-vibration rubber mat 3 by this sliding action does not transmit the shaking of the floor surface to the server rack R at the upper side, Can be safely protected.

The load distribution plate 4 is formed with connection portions 42 and 42 'that can connect the fixed support rods 6 and 6' to the load distribution plate 4 adjacent thereto.

The connection portions 42 and 42 'may have a structure in which the fixing supports 6 and 6' can be connected to each other by fastening the pieces as shown in the drawing, or may be a structure in which the fixing supports 6 and 6 ' The structure of the hole for assembly, etc., and the shape of the fixed supports 6, 6 'and the like can be variously implemented.

Further, the fixed support rods 6, 6 'connecting the load distribution plate 4 may be formed on the fixed support rods 6, 6' by having resilient members (not shown) The collapsing function of the fixed supports 6 and 6 'can be further strengthened by allowing the resilient member 61 to attenuate collisions or stress loads (when a force is applied to push or pull each other) So that it can be stably operated.

When the adjacent load distribution plates 4 are connected to each other using the fixed support rods 6 and 6 'as shown in the drawing, all the sliding members 1 and the load distribution plates 4 are connected to each other in a ring structure so that the vibration force of the earthquake is dispersed and attenuated throughout the sliding member 1 supporting the server rack R and the seismic loads acting on the sliding members 1 are different from each other The effect of the seismic waves on the server rack R can be minimized.

That is, the four sliding members 1 and the load distribution plate 4 supporting the server rack R are connected to each other via the fixed support rods 6 and 6 ' Disperse energy.

In addition, by preventing the vibration energy from acting differently in different directions under the server rack (R), it is possible to minimize the collision between vibrational energy acting in all directions and to prevent the load caused by these impact waves from acting on the server rack, The server rack (R) can be more safely protected.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
1: Sliding member 11, 11 ': Sliding sheet
12, 12 ': sliding face
2: Return Suspender
3,3 ': anti-vibration rubber mat 31, 31': first mat
32, 32 ': second mat
4: Load distribution plate 41: Inner part
42:
5: Base mat 6,6 ': Fixing support
R: Server rack

Claims (7)

A sliding member (1) comprising a pair of upper and lower sliding sheets (11, 11 ') made of a low friction material;
A return suspension panda (2) restricting a relative displacement amount between the sliding sheets (11, 11 ') and returning the sliding sheets (11, 11') relative to each other to the origin;
And a vibration-proof rubber mat (3, 3 ') which is coupled to the sliding member (1) to support the sliding member (1). A sliding member (1) made of a low friction material and composed of a pair of sliding sheets (11, 11 ') in which the sliding surfaces (12, 12') are closely contacted to each other;
A return suspension panda (2) restricting a relative displacement amount between the sliding sheets (11, 11 ') and returning the sliding sheets (11, 11') relative to each other to the origin;
A vibration proof rubber mat (3, 3 ') which is coupled to the sliding member (1) to support the sliding member (1);
A load distribution plate (4) coupled to an upper surface of the upper vibration damping rubber mat (3);
And a base mat (5) coupled to a lower surface of the lower anti-rubbing rubber mat (3 '). 3. The method according to claim 1 or 2,
The return suspender panda (2) comprises: The relative sliding amount of the pair of sliding sheets 11 and 11 'is limited by connecting the sliding sheets 11 and 11' vertically coupled to each other to connect the sliding sheets 11 and 11 ' And the relative movement of the first rack and the second rack is returned to the origin. 3. The method according to claim 1 or 2,
The vibration proof rubber mat (3, 3 ') is made of a cushion material and secures a passage through which the return suspension panda (2) coupled in a cross shape to the four sides of the sliding member (1) The first mat 31, 31 '
And a second mat (32, 32 ') joined to the rear surface of the first mat (31, 31'). 3. The method of claim 2,
The load distribution plate (4) comprises: (3) of the upper anti-vibration rubber mat (3) is made of an iron plate material having excellent bending strength. 6. The method of claim 5,
The load distribution plate (4) comprises: Is formed by forming an inner portion (41) in which an upper vibration damping rubber mat (3) is received and fixing the vibration damping rubber mat (3) inside and fixing the inner damping rubber mat (3). The method according to claim 6,
The load distribution plate (4) comprises: (4, 6 ') is connected to the adjacent load distribution plate (4) by forming the connection portions (42, 42') in four directions and connecting the fixed support members (6, 6 ').

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