JP2882625B2 - Device rack with extra length processing section for optical cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus rack having an extra length processing section for processing an extra cable length in an apparatus frame for mounting an electrical device for communication equipment and for laying an optical cable.

[0002]

2. Description of the Related Art Conventionally, there is a shelf for communication equipment as a device rack on which various electric devices are mounted. In this type of device rack, electronic devices and components are placed in a device installation portion, and a plurality of stages of the device installation portion are stacked at intervals. FIG. 7 is a view schematically showing a vertical sectional view of a conventional device rack.

In FIG. 7, an apparatus frame 10 is usually made of iron, and has a front panel 11 and a rear panel 12. The equipment installation section is provided with multiple 13-1, 13-2, ~, 13-n,
Spaces 14-1, 14-2, ... are provided between them, and the convection induction plate 15 is provided.
-1,15-2, ~ are arranged. Hereinafter, the spaces 14-1, 14-2, ~ and the convection guide plates 15-1, 15-2, ~, unless otherwise specified,
The space 14 and the convection guide plate 15 are represented by reference numerals.

[0004] Since electric and electronic parts are mounted on the device installation sections 13-1, 13-2,-, they generate heat during use. To prevent the temperature inside the device rack 10 from becoming excessively high,
A space 14 is provided in the middle of each of the device installation sections 13-1, 13-2, ..., and a convection is generated by attaching a fan at an appropriate place so that the heated air generates a convection and is discharged outside. And natural convection is caused by the convection induction plate.

The latter convection induction plate is labeled 15 in FIG. Since the convection guide plate 15 is installed at the position shown in FIG. 7 in the space 14, heat generated in the device installation sections 13-1, 13-2,.
As described above, along the convection guide plate 15, the intermediate gap between the frame 10, the back panel 12, and the device installation section 13 is raised, and natural convection is caused. Corresponding to the heat escaping along the convection guide plate 15, the cool air 17-1, 17-2,... Flows through the gap between the front panel 11 and the apparatus installation section 13, and the apparatus installation sections 13-1, 13 -
Since the natural convection has been reached, the temperature rise of the device installation sections 13-1, 13-2,... Is reduced.

On the other hand, although not shown in FIG. 7, various cables are taken in and taken out of the apparatus frame 10. In recent years, optical cables other than coaxial cables have been widely used as communication cables. Optical cables are awarded even if the cross-sectional dimensions of the cables are small, because of their large communication transmission capacity. The optical cable is taken into the inside of the device frame by a predetermined length from above or below the rear surface of the device frame, and the excess length is processed as shown in FIG. 8, and one end of the optical cable is connected to the signal connector. Here, "processing of the surplus length" refers to bringing a standardized optical cable, taking it into the equipment rack from the back of the equipment rack, and connecting it to the electronic parts etc. of each equipment installation part, at which time the optical cable is Since an extra length is often generated, an operation for holding a long cable inside the apparatus rack is required. Normally, the work that gently circulates as the work is collectively held, but the work processing is abbreviated as “excess length processing” below.

As shown in FIG. 8, for the operation of extra length processing, a convection guide plate is often used. A connector accommodating portion 20 for accommodating an optical cable connector is provided on the upper side 19 of the metal frame 18 that can be attached to an apparatus rack not shown in FIG. The optical cable connector 21 is coupled to the optical cable 22. Since the optical cable 22 is broken unless it is bent at a predetermined bending radius due to the characteristics of a glass product, the extra length processing must be performed by a skilled operator.

When the extra length processing is performed on the optical cable 22, since the operator's hand cannot be inserted deep into the convection guide plate 15, the convection guide plates 15-11 and 15-12 are moved from the lower left to the upper right in the figure. It is a mechanism that can slide and stop. Therefore, after attaching the metal frame 18 to the apparatus frame, for example, almost all of the convection guide plate 15-11 is pulled out as shown in the figure, and the optical cable 22 is taken into the convection guide plate 15-11. FIG. 9 shows an example of the extra length processing, in which the optical cables 22 are bundled with a predetermined bending radius, and held at a necessary place using a cable locking tool. After the processing, the optical cable 22
Is connected to an optical cable connector (not shown).
Then, the convection guide plate 15-11 shown in FIG. 8 is slid in the upper right direction in FIG. 8, and the whole of the convection guide plate and the optical cable are both housed in the apparatus frame. Then, attach the front panel to the equipment rack as needed.

FIG. 10 shows that the work of processing the extra length of the optical cable is performed on the rear side of the device rack using the optical cable winding frame provided on the rear side of the device rack, not on the convection guide plate. FIG. In FIG. 10, the optical cable winding frame 23 is located on the back of the metal frame 18,
After winding up the optical cable, one end of the optical cable 22 is pulled out along the convection guide plate 15 to the front of the metal frame 18 (to the left in FIG. 10), and then the optical cable connector (not shown) Join.

[0010] The configuration for performing the extra length processing of the optical cable is also described in Japanese Utility Model Laid-Open No. Hei 3-12103 and Japanese Utility Model Laid-Open No. Hei 3-12203. Regarding the former, a slide support plate that can slide along the upper surface of the convection guide plate is provided, and the optical cable locking member is mounted on the slide support plate. Regarding the latter, a plurality of boxes accommodating the coiled optical cable therein are collected, arranged in a sawtooth shape such that one end edges thereof partially overlap, and the optical cable locking member is positioned higher in the box. It is provided in a place.

[0011]

In particular, in the case of an equipment rack using an optical cable, the metal frame 18 shown in FIG. 8 needs to be subjected to a high mechanical processing so that the convection guide plate 15 can slide and stop. However, when processing is ensured, there is a disadvantage that the apparatus becomes extremely expensive. In order to draw out the convection guide plate to the front of the device rack and perform extra processing on the optical cable, it is necessary to provide a sufficiently large working space on the front of the device rack.

When a winding frame for an optical cable is used as shown in FIG. 10, the extra length processing is performed on the rear side of the apparatus rack, and the processing for connecting the optical cable to the connector is processing on the front side of the apparatus rack. It became necessary to make room for work on both front and rear sides of the equipment rack.

Further, in the case of the Japanese Utility Model Laid-Open Publication, it is necessary to perform special processing on the slide support plate and the box body, respectively, and the apparatus becomes expensive. SUMMARY OF THE INVENTION An object of the present invention is to improve the above-mentioned drawbacks, and to move and support a convection guide plate at the time of work for extra length processing, to keep the working space to a minimum, and to increase the number of equipment installation sections for an extra length processing section of an optical cable. An object of the present invention is to provide a device rack provided with the above.

[0014]

SUMMARY OF THE INVENTION An apparatus frame capable of processing an excess length of an optical cable, mounting an electric device on a device installation portion, and mounting a convection guide plate for generating natural convection between the device installation portions. The invention according to claim 1 is configured to have a mechanism for supporting the convection guide plate in a substantially parallel state by approaching the apparatus installation portion.

According to a second aspect of the present invention, there is provided a convection guide plate holding portion, wherein the mechanism for supporting the device in a substantially parallel state is attached to an apparatus rack and capable of restraining and releasing the restraint. Was installed on the convection guide plate side of the equipment installation part and on the rear side of the equipment rack.

According to a third aspect of the present invention, the mechanism for supporting in a substantially parallel state includes a springy fastener provided on a front surface of the apparatus frame between the convection guide plate and the apparatus installation section, and a mechanism for supporting the apparatus installation section. The convection guide plate is a restraint that restrains a state in which the convection guide plate is held in a substantially horizontal state with the apparatus installation part.

According to a fourth aspect of the present invention, the mechanism for supporting the convection guide plate in a substantially parallel state is provided in a peripheral portion of the convection guide plate, and the convection guide plate slides on the rear side of the apparatus frame in the apparatus installation section. The sliding bracket is supported in a substantially horizontal state.

According to a fifth aspect of the present invention, the mechanism for supporting the convection guide plate in a substantially parallel state is provided at a peripheral portion of the convection guide plate, and the convection guide plate is usually provided between the device installation portions on the front side of the device frame. When it is in the position of, it is folded, and the hinge is provided with a built-in spring for preventing the convection guide plate from returning with elasticity when it is in a substantially horizontal state.

[0019]

According to the first aspect of the present invention, the convection guide plate is moved to a position close to the apparatus installation portion for extra length processing work or when it is not necessary to cause natural convection for the convection guide plate. , So as to be supported substantially parallel to the apparatus installation section. With the convection induction plate in that state, it is possible to easily carry out excess cable processing on the plate. That is, the convection guide plate serves as an extra-length processing unit, which makes it easy for the operator to insert his hand to the back of the apparatus rack. Since the height of the extra length processing section only needs to be large enough to allow a worker to perform manual operations, the number of apparatus installation sections in the apparatus rack can be increased as compared with the related art. When the extra length processing is completed, the convection guide plate may be moved to a predetermined position so as to cause natural convection as usual.

According to the second aspect of the present invention, a convection guide plate holding / restraining mechanism is provided on the device rack, and is located at a predetermined position before the convection guide plate is moved for extra length processing, and the device is installed after the movement. Part is in a substantially parallel state. As the holding / restraining mechanism, a holding portion such as a screw provided on the back side of the device rack is used.

[0021] In the invention according to claim 3, using a spring of fasteners provided on the apparatus rack front side of the convection inducing plate, the one that holds constraining the state where convection guide plate becomes horizontal. According to the fourth aspect of the present invention, the metal fitting is used so that the convection guide plate slides on the rear side of the apparatus frame.

According to the fifth aspect of the present invention, the position of the convection guide plate is held in a predetermined state by a hinge with a built-in spring provided around the convection guide plate.

[0023]

FIG. 1 is a diagram showing a specific embodiment of the first and third aspects of the present invention. In FIG. 1, the hinge 24 with a built-in spring is inserted into a portion indicated by P between the convection guide plate 15 and the front of the apparatus frame, between the convection guide plate 15 and the apparatus installation portion 13-1. The portion indicated by P is enlarged in FIGS. 1B and 1C. The rotation lock unit 25 is a mechanism for holding and restraining the convection guide plate 15. That is, the rotation lock portion 25 is a type of a holding / restraining mechanism for supporting the convection guide plate 15 close to the device installation portion 13-1 and in a substantially parallel state. Matabane internal hinge 24 than other ones of the holding and restraining mechanism is only ingredients spring property tightening. Further, the rotation lock section 25
, The attachment 6 is provided in association therewith, and the attachment 26 is attached to the apparatus installation section 13-1.

Since the hinge 24 with a built-in spring is provided at the portion of the convection guide plate 15 shown in FIG. Lifted to a position where it contacts -2. At that position, the convection guide plate 15 can generate natural convection, which is the original purpose, for the device rack and the device installation portion. In this state, the extra length process cannot be performed on the convection guide plate 15.

If the rear side of the convection guide plate 15 is forcibly depressed against the tightening force of the hinge 24 with built-in spring, and becomes substantially parallel to the installation portion 13-1, the rotation lock The part 25 is rotated. As shown in FIG. 1C, the rotation lock portion 25 restrains the convection guide plate 15 from lifting. Further, as shown in FIG. 1 (D), when the rod constituting the rotation lock portion 25 is rotated by 90 degrees from the normal solid line position to the position shown by the broken line, the upper surface of the convection guide plate 15 in this state is subjected to extra length processing work. Can be used for This rotation lock portion corresponds to the restraint according to the third aspect .

If only the use of the convection guide plate 15 as the extra length processing unit is viewed, the rotation lock unit 25 is an additional one. When the extra length processing operation is completed, if the convection guide plate 15 is neglected to return to the original position, the hinge 2
4 has an effect that the convection guide plate 15 can be automatically returned to the original position.

However, the rotation lock 25 has another effect. That is, one end of the rotation lock portion 25 is connected to the convection induction plate 1.
5 is used to press against the hinge 24 with a built-in spring, the other end of the rotation lock portion 25 protrudes toward the front side of the frame, so that the convection guide plate 15 is left in the state of extra length processing work. The front panel of the frame cannot be attached. Therefore, according to the present invention, even if the convection guide plate 15 is used for other purposes, the convection guide plate can be reliably returned to a state where natural convection can be generated.

FIG. 2 is a diagram showing a specific embodiment of the second aspect of the present invention. In FIG. 2, the apparatus installation sections 13-1 and 13-2 are mounted on the apparatus rack 10 with a space 14 therebetween. The lock mechanism 27 holds and restricts one end of the convection guide plate 15 together with the lower surface of the device installation section 13-2 by the protrusion 101 attached to the device rack 10. That is, the lock mechanism 27 also serves as a convection guide plate holding portion to restrain the convection guide plate and to release the constraint.

In the case of FIG. 2, the convection guide plate 15 is normally held at a position 15a by a bolt shown as a lock mechanism 27. When using the convection guide plate 15 as a surplus processing unit,
When the lock mechanism 27 is removed to the right and the lock mechanism is released, the convection guide plate 15 moves in the direction of arrow M by its own weight.
Reach position 15b (shown by the dashed line). At this time, the convection guide plate 15 approaches the device installation section 13-1, and becomes substantially parallel thereto. Therefore, the upper surface of the convection guide plate 15 can work as a surplus processing unit.

It is sufficient that the front side of the device rack 10 close to the device installation portion 13-1 of the convection guide plate 15 shown in FIG. 2 can be lightly fixed to the device installation portion 13-1 so as not to move unnecessarily. Therefore, the hinge 24 with a built-in spring shown in FIG. 1 can be used. Alternatively, a groove may be provided to drop the convection guide plate.

Next, FIG. 3 is a diagram showing a specific embodiment of the invention according to claim 4. In the perspective view shown in FIG. 3A, the frame 28 is made of metal so as to almost completely surround the space 14 shown in FIG. The slide fittings 29-1 and 29-2 are provided obliquely on both sides of the frame 28 at positions near the back of the frame. The frame 28 shown in FIG. 3A is first inserted into the space 14 shown in FIG. 2, and is screwed to the apparatus rack on the front side of the apparatus rack. Next, a convection guide plate (not shown) is inserted and locked with the upper device installation section using a lock mechanism as shown in FIG.

When the lock mechanism is released, the convection guide plate slides forward due to its own weight and the slide fitting. The convection guide plate projects from the front of the apparatus frame by the depth of the slide fitting. As shown in FIG. 3 (B), it is preferable to provide a non-slip (stopper) 30 for the convection guide plate. Since the convection guide plate comes forward, the workability of extra length processing is improved.

When the extra length processing operation is completed, if the convection guide plate is pushed rearward (to the left in FIG. 3B), the convection guide plate slides up the slide fitting 29. Lock the convection induction plate. In the case of FIG. 3 as well, the front panel cannot be attached unless the convection guide plate is returned to its original position, so that the forgetting of returning the convection guide plate does not occur.

The case where the convection induction plate is used as the extra length processing section and the convection induction plate is hardly processed has been described above. In the following case, a case in which processing is performed will be described.

FIG. 4 is a perspective view showing another embodiment of the present invention. FIG. 4 shows the convection induction plate 15 as shown in FIG.
When the convection guide plate 15 is held by the lock mechanism and used for the operation of extra length processing after being held by the lock mechanism, the convection guide plate 15 is brought into a state substantially parallel to the apparatus installation section, as shown in FIG. At that time, a rotation lock portion 25 is attached to the front surface of the device installation section as an example of a holding / restraining mechanism for the convection guide plate, and the convection guide plate 15 is provided with a cutout portion 15A at a location corresponding to the rotation lock portion 25.

The rotation lock portion 25 is used to restrict the position of the convection guide plate in that state because the convection guide plate 15 is in a state parallel to the apparatus installation portion. That is, when the convection guide plate causes normal natural convection, the rotation lock portion 25 is placed at the broken line position indicated by the normal state 31 shown in FIG. 4, so that the convection guide plate is not locked.

Next, as shown in FIG. 4, the rotation lock portion 25 is placed at the position 32 indicated by a solid line during the operation. At that time, the position of the convection guide plate 15 is restricted. 5 and 6
Is the notch 1 of the convection guide plate 15 as in FIG.
5B is an embodiment of the invention as defined in claim 5. In the case of FIG. 5 and FIG.
On one side of the side surface 8, a spring built-in hinge 24 is attached to the frame 28 as shown. Convection guide plate 15
When using to generate normal natural convection,
As shown in FIG. 5, the hinge 24 is at the position of the notch 15 </ b> B of the convection guide plate 15 in a folded state. In FIG. 5, only three cable locking members 33-1, 33-2, and 33-3 are shown, but in the case of an optical cable, four of the same type are used side by side at the left position. . A hinge 34 is provided below the convection guide plate 15 to lift and hold the convection guide plate 15.

When performing extra length processing on the cable,
Since the convection guide plate 15 is lowered downward against the hinge 34 to be substantially parallel to the lower device installation step (not shown),
Regarding the notch 15B of the convection guide plate 15, the folding of the hinge 24 with built-in spring is released, and the state shown in FIG. 6 is obtained. At this time, the convection guide plate 15 is held by the hinge 24 in a state parallel to the device installation section (not shown), so that the extra length processing can be performed on the convection guide plate 15. In the case of the extra length processing for the optical cable, the optical cable is wound and engaged with a locking member, for example, 33-1, 33-2, 33-3 while drawing an arc through the center where these members are upright. Stop.

In the above description, a normal lock portion is used, but a fastener such as a screw may be used instead of the lock portion. The optical cable after the extra length processing is present on the convection guide plate. However, when the convection guide plate is set at the normal position, there is no hindrance to the generation of natural convection.

[0040]

As described above, according to the present invention, the convection guide plate can be used effectively and appropriately for the operation of the extra length processing of the optical cable. It is very effective because it is automatically returned as a convection guide plate.

Since the convection guide plate needs to be moved in a small amount and is not precisely processed, the extra length of the apparatus does not make the entire apparatus expensive. According to the present invention, a convection guide plate is provided, and a space serving as a surplus processing unit is sufficient as long as a minimum height required for a surplus processing operation can be obtained. The space (height direction) between the device installation sections can be reduced. Therefore, the device rack can be used more effectively than before. That is, a larger number of the device installation sections can be taken into the same device rack. Due to its characteristics, the optical cable requires a considerable area and space volume for extra length processing work, but the area and space volume can be effectively utilized by also using the convection guide plate.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the invention described in claims 1 and 3;

FIG. 2 is a diagram showing an embodiment of the invention described in claim 2;

FIG. 3 is a diagram showing an embodiment of the invention described in claim 4;

FIG. 4 is a view showing an embodiment of the invention described in claim 3;

FIG. 5 is a diagram showing an initial state of the embodiment of the invention of claim 5;

FIG. 6 is a view showing a state after FIG. 5;

FIG. 7 is a diagram for explaining the operation of the convection induction plate.

FIG. 8 is a diagram for explaining cable take-in;

FIG. 9 is an explanatory diagram of surplus length processing.

FIG. 10 is a diagram illustrating a case where extra length processing is performed on the back of the apparatus rack.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Device rack 13 Device installation part 14 Space 15 Convection guide plate 24 Hinge with a built-in spring 25 Rotation lock part 28 Frame 29 Slide bracket

Claims (5)

(57) [Claims] 1. An apparatus rack capable of processing an excess length of an optical cable, mounting an electric device on a device installation portion, and mounting a convection guide plate for causing natural convection between the device installation portions. An apparatus frame having an extra length processing section of an optical cable, comprising a mechanism for supporting the convection guide plate in a substantially parallel state close to the apparatus installation section. 2. The convection guide plate holding part according to claim 1, which is mounted on an apparatus frame and capable of restraining and releasing the restraint, wherein the mechanism for supporting the apparatus in a substantially parallel state is provided. An apparatus rack comprising an extra length processing section for an optical cable, the apparatus frame being installed on the back side of the apparatus rack on the lower surface side of the section. 3. The mechanism according to claim 1, wherein the mechanism for supporting the apparatus in a substantially parallel state is provided on a front surface of the apparatus rack on an upper surface side of the apparatus installation section.
And lift the back side of the convection guide plate with the spring force.
Comprising: a spring property fasteners, are attached to the device installation unit, the extra length handling section of the optical cable, characterized in that a restraint for restraining the state of holding the convection guide plate in a substantially horizontal state and apparatus installation portion that Equipment rack to do. 4. A mechanism for supporting the substantially parallel state according to claim 1 is provided on the side of the convective guide plates, substantially horizontal convective induction plate slidingly in the apparatus rack rear side of the device installation unit An apparatus rack having an extra length processing section for an optical cable, characterized in that it is a sliding bracket supported in a state. 5. The mechanism for supporting the convection guide plate according to claim 1 on a side surface of the convection guide plate, wherein the convection guide plate is in a normal position between the device installation portions on the front side of the device frame. A hinge which incorporates a spring for preventing the return of the convection guide plate with elasticity when it is in a substantially horizontal state.