JP2011138910A - Rack for equipment storage - Google Patents

Abstract

A device storage rack is provided that can efficiently and safely perform maintenance of devices stored in a rack.
After a unit 2 is pulled out from a rack 1 by slide rails 3 and 4, it can be translated further obliquely downward by link mechanisms 5 and 6. After the unit 2 is pulled out from the rack, the unit 2 can be moved to a lower position from the position. Therefore, even if the unit is stored in a considerably high position of the rack, the operator can perform maintenance work while standing on the floor.
[Selection] Figure 1

Description

  The present invention relates to a rack used for installing devices such as communication devices and control devices on a floor, and more particularly to a device storage rack suitable for installing a plurality of devices such as base stations and relay stations.

In base stations and relay stations for communication and broadcasting, it is necessary to install devices such as communication devices and control devices as a plurality of units.
For this reason, they are stored in a vertically long box-type case called a rack, which is sequentially stacked at a predetermined interval (see, for example, Patent Document 1).

By the way, equipment such as a communication device and a control device requires maintenance as necessary. For this purpose, it is necessary to take out the unit from the rack.
Therefore, a slide mechanism is used to hold the unit with respect to the case of the rack, and when necessary, as shown in FIG. 6, the entire unit can be pulled out from the rack and returned to the rack after being pulled out.

  In FIG. 6, reference numeral 1 is a rack, which is usually made of a vertically long case (casing), and a plurality of units 2 are accommodated in the vertical direction. However, at this time, two slide rails 3 and 4 which are paired on the right and left sides are used, and as shown in the figure, the entire unit 2 is configured to be pulled out from the rack 1 horizontally.

As shown in the figure, one end of these slide rails 3 and 4 is fixed to the left and right side surfaces of the unit 2, respectively, and the other end thereof is horizontal to the left and right inner surfaces of the rack 1. It is held so that it can slide in a direction (linear movement).
Then, when a pulling direction force is applied to the unit 2, the slide rails 3 and 4 slide with respect to the rack 1, the entire unit 2 can be pulled out from the rack 1, and if the unit 2 is pushed, You can return it.

At this time, devices such as a communication device and a control device are usually configured as a unit composed of a box-shaped case with an open upper surface, a so-called top-open unit.
Therefore, if the unit 2 is pulled out from the rack 1, as shown in FIG. 6, all the units 2 come out to the outside, so that the maintenance of the equipment can be easily performed from above.
At this time, the slide rails 3 and 4 are provided with a stopper mechanism, and the distance at which the unit 2 can be pulled out from the rack 1 and the stop position when returned to the rack 1 are defined. Maintenance can be performed safely.

JP 2008-60229 A

In recent years, various functions have been required for base stations and relay stations for communication and broadcasting, and as a result, the number of necessary units (equipment units) has increased.
Therefore, it is necessary to increase the number of units accommodated in one rack, and for this reason, a vertically long rack is used so that the unit can be accommodated from the installation floor to a considerably high position.

At this time, it is necessary to work from the upper side of the unit for maintenance of the equipment in the unit.
Therefore, when the maintenance target unit is located on the upper side of the rack, the operator must perform maintenance from a higher position.
Therefore, in the case of a conventional rack, when maintaining a unit at a high position, it is necessary to use a stepladder, a stand, etc., and the operator climbs up to a height at which the inside of the unit can be seen from above.

As a result, in the prior art, it is necessary to install and move a stepladder and a stand, which causes a reduction in work efficiency, and further requires raising and lowering the stepladder and the stand and work on the stepladder and the stand. There is a problem that this becomes a factor of lowering safety.
An object of the present invention is to provide an equipment storage rack that can perform maintenance of equipment efficiently and safely.

  An object of the present invention is to provide a device storage rack in which a slide mechanism is used to hold the unit with respect to the rack housing so that the unit can be pulled out horizontally from the storage position, and a parallel link mechanism for joining the unit to the slide rail of the slide mechanism And a horizontal oblique movement guide mechanism and an oblique rotation mechanism, and when the unit is pulled out horizontally from the stowed position, the unit is further lowered into a lowered horizontal posture and a front lower inclined posture at the drawn position. This is achieved by allowing any posture.

According to the present invention, after the unit is pulled out from the rack, the unit can be further moved downward, or the unit is tilted with the front side down, so that the inside of the unit can be seen even at the position where the unit is pulled out. In addition, the inside can be easily touched by hand.
Therefore, according to the present invention, even when the unit to be maintained is located on the upper side of the rack, the operator can perform maintenance while standing on the floor. As a result, work efficiency is improved, and there is no risk of a fall accident or a fall accident associated with the use of a stepladder or a stand, which contributes to an improvement in safety.

It is explanatory drawing which shows 1st Embodiment of the rack for apparatus accommodation by this invention. It is explanatory drawing which shows 2nd Embodiment of the rack for apparatus accommodation by this invention. It is explanatory drawing which shows 3rd Embodiment of the rack for apparatus accommodation by this invention. It is explanatory drawing which shows 4th Embodiment of the rack for apparatus accommodation by this invention. It is explanatory drawing which shows 5th Embodiment of the rack for apparatus accommodation by this invention. It is explanatory drawing which shows an example of the rack for apparatus storage by a prior art.

Hereinafter, the equipment storage rack according to the present invention will be described in detail with reference to the illustrated embodiments.
First, the first embodiment of the present invention will be described with reference to FIG. 1. FIG. 1A shows a state in which the unit 2 is pulled out from the rack 1 (not shown) by the slide rails 3 and 4. The image (b) is an image of the state in which the unit 2 is further pulled out and translated further obliquely downward by the link mechanisms 5 and 6 after being pulled out.

  Here, first, the link mechanism 5 is composed of an upper arm 5A, a lower arm 5B, and a rotary damper 5C provided on one side surface of the unit 2 (a side surface that is diagonally upward to the left in the figure), and then a link The mechanism 6 includes an upper arm 6A, a lower arm 6B, and a rotary damper 6C that are provided on the other side surface of the unit 2 (the side surface that is diagonally downward to the right in the figure). However, this rotary damper 6C is not shown in the figure.

The upper arms 5A and 6A are downward L-shaped members, and are pivotally supported on the slide rail 3 at the end of the short portion thereof, and at one end of the unit 2 at the end of the long portion (in the figure). It is pivotally supported on the side surface of the diagonally facing direction.
Next, the lower arms 5B and 6B are upward L-shaped members, which are pivotally supported by the slide rail 4 at the ends of the long portions, and the other side surfaces of the unit 2 at the ends of the short portions (see FIG. In this case, it is pivotally supported on the side of the oblique front side.

As a result, the upper arms 5A and 6A and the lower arms 5B and 6B are paired to constitute a parallel link mechanism, and the unit 2 is moved obliquely forward and downward from the state shown in FIG. 1 (a) (see FIG. 6). Contrary to the action of lowering horizontally to the lowered horizontal posture shown in FIG. 1 (b), the unit 2 is raised horizontally backward and upward from the state shown in FIG. 1 (b) and shown in FIG. 1 (a). It works to return to the state.
If the unit 2 is further pushed after returning to the state shown in FIG. 1A, the unit 2 can be accommodated in the rack 1 in a number of ways.

At this time, the rotary dampers 5C and 6C are a kind of friction member that is caused to generate friction by a spring, and the lower arms 5B and 6B are provided at portions where the slide rails 3 and 4 are pivotally supported. A gentle braking force is applied to the rotation of the lower arms 5B and 6B with respect to 3 and 4, and as a result, it is possible to suppress a shock to the unit 2 when the unit 2 is horizontally lowered and horizontally raised. it can.
Here, the rotary damper 6C is not shown in the figure.

  Therefore, according to the embodiment shown in FIG. 1, after the unit 2 is pulled out from the rack 1, the unit 2 can be moved to a lower position from that position, so that the unit 2 is stored in a considerably high position of the rack 1. Even if this is done, the operator can perform maintenance work while standing on the floor.As a result, the frequency of use of stepladders and stands can be reduced, and work efficiency and safety can be improved accordingly. Will be.

Next, a second embodiment of the present invention will be described with reference to FIG.
Here, (a) in FIG. 2 is an image of a state in which the unit 2 is pulled out from the rack 1 (not shown) by the slide rails 3 and 4, and (b) in FIG. FIG. 6 is a diagram illustrating a state where the vehicle is further tilted forward at a further forward position by the horizontal oblique movement guide mechanisms 7 and 8.

  First, the horizontal oblique movement guide mechanism 7 includes a guide rail 7A with a guide groove having a substantially “he” shape provided on one side surface (the side surface on the upper left in the figure) of the unit 2, The guide rail 7A is composed of two guide pins 7B and 7C provided inside the slide rail 3 in a state of being fitted into the guide groove of the guide rail 7A. The guide rail 8A with a guide groove having a substantially “h” shape provided on the side surface (the side surface diagonally downward to the right in the figure), and the slide rail 4 in a state of being fitted in the guide groove of the guide rail 8A It is comprised by two guide pins 8B and 8C (not shown in the figure) provided in the.

  Therefore, first, as shown in FIG. 2 (a), when the unit 2 is pulled out (see FIG. 6), the two guide pins 7B and 7C on the guide rail 3 are formed in the guide groove of the guide rail 7A. The guide pins 4B and 8C on the guide rail 4 are fitted to the horizontal portion of the guide groove 8A in the horizontal direction of the guide groove 8A. As a result, the unit 2 is held horizontally with respect to the two guide rails 3 and 4 in a stable state.

  Next, after the state shown in FIG. 2 (a) is applied, if force is applied to further pull out the unit 2, the guide pins 7B, 8B, 7C, 8C remain fitted in the guide grooves of the guide rails 7A, 8A. The unit 2 is pulled out together with the guide rails 7A and 8A. At this time, the guide pins 7B, 8B, 7C and 8C enter the portions where the guide grooves of the guide rails 7A and 8A are inclined. As a result, As shown in FIG. 2 (b), the unit 2 assumes a front-down-tilting posture that is obliquely downward at a position where the unit 2 protrudes further forward.

Also at this time, as with the guide pins 7B and 7C, the two guide pins 8B and 8C are also fitted to the inclined portions of the guide grooves of the respective guide rails 7A and 8A so as to be separated in the front-rear direction. The unit 2 keeps the front and lower inclined posture in a stable state with respect to the two guide rails 3 and 4.
After that, the push-in by lifting the front of the unit 2 can be returned to the state shown in FIG. 2 (a), and finally it can be stored in the rack 1.

  Therefore, according to the embodiment shown in FIG. 2, after the unit 2 is pulled out from the rack 1, the unit 2 is further moved from the position to a lower position and then tilted forward, so that the front and lower tilt posture can be obtained. Therefore, even if the unit 2 is stored in a considerably high position of the rack 1, the operator can perform maintenance work while standing on the floor, and as a result, the frequency of use of a stepladder or a stand can be suppressed. As a result, work efficiency and safety can be improved accordingly.

Next, a third embodiment of the present invention will be described with reference to FIG.
Here, (a) in FIG. 3 is an image of a state in which the unit 2 is pulled out from the rack 1 (not shown) by the slide rails 3 and 4, and (b) in FIG. FIG. 6 is a diagram illustrating a state in which the tilting mechanism 9 and 10 are further in a forward tilting posture.

  First, the oblique rotation mechanism 9 and the pin 9A provided in the vicinity of the tip of the slide rail 3 on the side of one side of the unit 2 (the side on the upper left in the figure) are turned up and down. It comprises a moving shaft 9B, a pin 9C provided in front of the side surface of the unit 2, and a hydraulic damper 9D connected between the pin 9A and the pin 9C. 2A, the pin 10A and the rotary shaft 10B provided in the vicinity of the tip of the slide rail 4 on the other side surface (the side surface diagonally downward to the right in the figure) and the front side of the side surface of the unit 2 The pin 10C is provided, and the hydraulic damper 10D is connected between the pin 10A and the pin 10C.

Here, the rotation shafts 9B and 10B are respectively fitted in holes provided in the vicinity of the bottom of the unit 2 in the vicinity of the rear end portions on both sides of the unit 2, whereby the unit 2 is connected to the rotation shaft. 9B and 10B are supported as pivots with respect to the slide rails 3 and 4.
Accordingly, when the unit 2 is pulled out from the rack 1 (see FIG. 6) and brought into the state shown in FIG. 3 (a), if the front of the unit 2 is pushed down, the hydraulic dampers 9D and 10D extend, and FIG. 3 (b) As shown in FIG. 2, the unit 2 is set to the front lower inclination posture in which the unit 2 is inclined downward.

The diagonally downward angle of the unit 2 at this time is defined by the maximum extendable length of the hydraulic dampers 9D, 10D. Therefore, the unit 2 is in a stable state with respect to the two guide rails 3, 4. Maintain a tilted down position.
That is, at this time, the hydraulic dampers 9D and 10D function as stays for holding the unit 2, respectively, but at this time, a gentle braking force is applied to the rotation of the unit 2 by the action of the hydraulic dampers 9D and 10D. As a result, the unit 2 can be prevented from being shocked.

Then, if the front of the unit 2 is pushed up and pushed in, the state shown in FIG. 2 (a) can be restored and finally stored in the rack 1.
Also at this time, there are the hydraulic dampers 9D and 10D, and when these are contracted, the damper function works and it is possible to suppress the unit 2 from being shocked.

  Therefore, according to the embodiment shown in FIG. 3, after the unit 2 is pulled out from the rack 1, the unit 2 can be further tilted forward from the position to be in a front-lower tilt position. Even if the rack is stored at a fairly high position in the rack 1, the worker can perform maintenance work while standing on the floor, and as a result, the frequency of use of a stepladder, table, etc. can be suppressed. Improvements in work efficiency and safety will be obtained.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
Here, the embodiment of FIG. 4 is provided with a stay 11 with a lock function in place of the one hydraulic damper 10D in the third embodiment described in FIG. This is the same as the case of the third embodiment shown in FIG.
4 (a) is a diagram illustrating the state in which the unit 2 is pulled out from the rack 1 (not shown) by the slide rails 3 and 4. FIG. 4 (b) is a diagram in which the unit 2 is pulled out. It is the figure which imaged the state further made into the forward leaning posture by the diagonal rotation mechanisms 9 and 10 afterwards.

This stay 11 with a lock function is provided with a fixing knob 12 and is made to be extendable and contractable by a slide type, and the expansion and contraction can be stopped at an arbitrary length by the fixing knob 12.
Therefore, according to the embodiment of FIG. 4, the unit 2 can be locked in the front lower inclination posture by operating the fixing knob 12 after the unit 2 is brought into the state of FIG. 4B.
The other operational effects are the same as those of the third embodiment described with reference to FIG.

By the way, it is customary that a cable is connected to the rear surface of the unit 2, but at this time, as shown in FIG. 5, the cable carrier is formed so as to be bent in accordance with the drawer of the unit 2. 13 is used.
FIG. 5 shows, as an example, the cable carrier 13 according to the third embodiment described with reference to FIG. 3. Here, FIG. (B) is an image of a state in which the unit 2 is further pulled out and is further tilted forward by the oblique rotation mechanisms 9 and 10 after being pulled out. It is.

In this case, after the unit 2 is pulled out, the unit 2 is further tilted forward and is brought into a front-downward tilting posture, so that there is a possibility that the connecting portion between the cable held by the cable carrier 13 and the unit 2 may be forced.
Therefore, in the embodiment of FIG. 5, an arch-shaped cable carrier stay 14 is provided so as not to overload the connecting portion.

  In addition, in this embodiment of FIG. 5, although embodiment of FIG. 3 is made into object, in other embodiment, it is the same in the point that a connection part of a cable and the unit 2 may be overloaded, Therefore, Similarly, in any of the embodiments, it is effective to use, for example, an arch-shaped cable carrier stay or the like and make the connection portion between the cable and the unit rich in flexibility (flexible).

Here, it will be as follows if the effect by embodiment of this invention is enumerated.
Based on the point that slide rails are used to hold units of equipment such as communication devices and the unit can be pulled out to the front of the rack as a whole. After pulling out the whole unit with the slide rail, the unit is further lowered horizontally. The front and lower inclined postures can be used, so that the unit can be maintained while the worker is standing on the floor.

In addition, in order to make the unit either a descending horizontal posture or a front lower inclined posture, a parallel link mechanism, a horizontal oblique movement guide mechanism, an oblique rotation mechanism, etc. are used, and the damper works. Even when the unit is heavy, the operator can easily operate, and at this time, the unit does not descend rapidly, so that the operator can proceed smoothly.
Furthermore, when a stay with a stopper is used, the front lower inclination posture of the unit can be fixed to an arbitrary degree, so that maintenance efficiency can be improved.

1 rack (chassis for storing multiple units)
2 units (equipment such as communication devices)
3, 4 Slide rail 5, 6 Link mechanism (parallel link mechanism)
5A, 6A Upper arm 5B, 6B Lower arm 7 Horizontal oblique movement guide 7A Guide rail (with a guide groove in the shape of an approximate “he”)
7B, 7C Guide pin 8 Horizontal diagonal movement guide 8A Guide rail (with guide groove in the shape of "He")
8B, 8C Guide pin 9 Diagonal rotation mechanism 9A Pin 9B Rotation shaft 9C Pin 9D Hydraulic damper 10 Diagonal rotation mechanism 10A Pin 10B Rotation shaft 10C Pin 10D Hydraulic damper 11 Stay with lock function 13 Cable carrier 14 Cable carrier stay ( Arched cable carrier stay)

Claims (1)

In the equipment storage rack that uses a slide mechanism to hold the unit with respect to the rack housing, and the unit can be pulled out horizontally from the storage position.
A parallel link mechanism, a horizontal oblique movement guide mechanism and an oblique rotation mechanism are provided for joining the unit to the slide rail of the slide mechanism,
The equipment storage rack, wherein when the unit is pulled out horizontally from the storage position, the unit can be further brought into either a lowered horizontal position or a front lower inclined position at the pulled position. .

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