JP4578021B2 - Splice unit - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a structure of a splice unit that is installed in a rack for housing communication equipment or the like and used for connecting optical fibers.
[0002]
[Prior art]
As shown in FIG. 6, the conventional splice unit 21 is provided with an introduction hole 23 for the optical cable 24 in the back plate 22 b of the housing 22, and a cable clamp 25 for fixing the optical cable 24 in front of the introduction hole 23. A tension member clamp 27 for fixing a tension member 26 extending from the optical cable 24 is provided in front of the cable clamp 25, and a fusion portion and an extra portion of the optical fiber core wire 29 are provided on the side of the cable clamp 25 and the tension member clamp 27. A fusing tray 32 for storing the length is provided, and a front panel 22 d of the housing 22 is provided with a connector 36 for connecting the optical cord 33.
[0003]
[Problems to be solved by the invention]
However, depending on the arrangement of the equipment installed in the rack, the optical cable had to be pulled in from the side of the rack, or it had to be pulled in from the bottom due to limitations on the depth of the rack. However, there was a problem that the optical cable could not be accommodated because the optical cable could not be retracted.
[0004]
[Means for Solving the Problems]
In view of the problems of the above-described conventional splice unit, an object of the present invention is to provide a splice unit that can freely change the drawing direction of an optical cable, and its structure is installed in a rack for storing communication equipment and the like. A splice unit comprising: a cable clamp for fixing an optical cable to a housing; a tension member clamp for fixing a tension member of the optical cable; and a fusion tray for accommodating a fusion part of the optical fiber core wire. The back plate and the side plates at the left and right corners of the rear side of the housing are opened to form an optical fiber lead-in port, a cable clamp and a tension member clamp are arranged on the panel, and the panel is placed outside the peripheral edge of the lead-in port. provided inside the vertically upright position or gland while defeating laterally, to allow changing the retracting direction of the optical cable It is.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The back plate and side plates at the left and right corners of the back side of the housing are opened to form an optical fiber lead-in port, a cable clamp and a tension member clamp are arranged on the panel, and the panel is placed vertically outside the peripheral edge of the lead-in port. It is provided in a standing state or in a state where it is tilted sideways inside the drawing port , so that the drawing direction of the optical cable can be changed .
[0006]
【Example】
An embodiment of a splice unit according to the present invention will be described with reference to the accompanying drawings of FIGS.
[0007]
The splice unit 1 is installed by fixing the left and right side plates 2a of the housing 2 in a rack (not shown) for storing communication devices and the like. The housing 2 has an optical fiber lead-in port 3 formed by opening back plates 2b and side plates 2a at two left and right corners on the back side in front of FIG.
[0008]
A cable clamp 5 for fixing the optical cable 4 and a tension member clamp 7 for fixing the tension member 6 extending from the optical cable 4 are fixed to a rectangular panel 8 slightly larger than the drawing port 3. Since the pitch between the screws for fixing the cable clamp 5 and the pitch between the screws for fixing the tension member clamp 7 are the same, the cable clamp 5 can be attached by being rotated by 90 °. Supporting portions 8b for fixing a rectangular plate-like cover 8a for protecting the optical fibers 4 and 9 are formed at opposite corners of the panel 8.
[0009]
The cable clamp 5 has a shape in which the corrugated surfaces 5c of the receiving member 5a and the pressing member 5b are opposed to each other. The optical cable 4 is sandwiched between the corrugated surfaces 5c, and screws 5d at the left and right ends are fastened and fixed. The tension member clamp 7 has a plurality of columnar portions 7b arranged in parallel on the substrate portion 7a, and a through hole 7c is formed at substantially the center of the columnar portion 7b. The tension member 6 protruding from the optical cable 4 passes through the through hole 7c. The tension member 6 is fixed by tightening a screw 7d screwed into the through hole 7c from the tip of the cylindrical portion 7b.
[0010]
When the optical cable 4 is drawn into the splice unit 1 from the lower surface side of the rack, the panel 8 is attached to the outer periphery of the left or right lead-in port 3 formed on the left or right side plate 2a or the back plate 2b as shown in FIG. It fixes with the screw in the state standing upright on the outer periphery of the periphery of the formed either of the left and right inlets 3. Since the insertion hole 8c is formed in the panel 8, the optical fiber core wire 9 can be inserted as necessary. Further, when the panel 8 is fixed to the back plate 2b, if a unit larger than the depth of the splice unit 1 is installed on the lower side of the splice unit 1, the extension member 10 is used for fixing as shown in FIG. can do.
[0011]
When the optical cable 4 is pulled into the splice unit 1 from the rear side or the left and right side surfaces of the rack, the panel 8 is placed in a state where the panel 8 is laid sideways on the peripheral edge of either the left or right drawing port 3 as shown in FIG. It arrange | positions so that a corner may correspond with the corner of the baseplate 2c of the housing | casing 2, and it fixes with a screw | thread.
[0012]
The housing 2 is provided with a slide case 11 whose inner wall is slidable in the front-rear direction, and a plurality of fusing trays 12 for accommodating the fusing portion and the extra length of the optical fiber core wire 9 are provided in multiple stages. They are arranged in a stack. An opening 11b is formed in the back plate 11a of the slide case 11, and an optical fiber core wire 9 and an optical cord 13 having a length necessary for sliding the slide case 11 back and forth are accommodated in the lower edge of the opening 11b. One end of the flexible tube 14 is connected, and the other end is fixed to the edge of the panel 8 via a connecting member 15.
[0013]
The flexible tube 14 is formed so as to be bendable in only one direction, and a large number of a pair of elastic pieces projecting from both sides are juxtaposed on the outer side surface when the flexible tube 14 is bent, and the flexible tube 14 is pushed in by pushing the optical fibers 9 and 13. It can be stored in. The panel 8 is attached to the right side of FIG. 1 and the flexible pipe 14 is provided on the left side. However, when the panel 8 is attached to the left side, the flexible pipe 14 is temporarily removed and attached to the right side.
[0014]
The optical fiber core wire 9 drawn out from the optical cable 4 passes through the flexible tube 14 and is drawn into the slide case 11. Even when the slide case 11 is slid in the front-rear direction, the flexible tube 14 is deformed while ensuring the minimum radius of curvature of the optical fiber core wire 9, so that the optical fiber is prevented from being damaged.
[0015]
A plurality of connectors 16 are provided on the front plate 11c of the slide case 11, and one end of the optical cord 13 is connected thereto. The optical fiber core wire 9 drawn to the other end of the optical cord 13 is fused with the optical fiber core wire 9 drawn into the slide case through the flexible tube, and the fusion part and the extra length are attached to the fusion tray 12. Stored and protected.
[0016]
The front panel 2d of the housing 2 can be opened and closed, and the optical cord 13 can be connected to the connector 16 of the slide case 11 from the front of the rack.
[0017]
In this embodiment, when the panel 8 is attached to the housing 2 in a vertically standing state, the panel 8 is attached to the outer surface of the housing 2, but the bottom plate 2c of the housing 2 is attached as shown in FIG. The panel 8 may be formed so as not to protrude from the outside of the housing 2 by fixing the support portion 8b of the panel 8 to the inner surface of the side plate 2a or the back plate 2b of the housing 2.
[0018]
【The invention's effect】
As described above, the splice unit according to the present invention is installed in a rack for storing communication devices and the like, and a cable clamp for fixing an optical cable to a casing and a tension member for fixing a tension member of the optical cable. In a splice unit having a clamp and a fusing tray that accommodates a fused portion of an optical fiber core, a back plate and side plates at the left and right corners of the rear side of the housing are opened to form an optical fiber lead-in port. The cable clamp and tension member clamp are arranged on the panel, and the panel can be installed in a state where it is erected on the outside of the peripheral edge of the inlet or laid sideways on the inner side of the inlet , and the optical cable drawing direction can be changed. by the the, the retracting direction of the optical cable can be changed freely, also Attach the panel upright vertically on the outside of the housing If could be widely used inside the housing, also, there is an effect that a good workability since it is fixed in the cable and remove the panel from the housing.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a splice unit according to the present invention.
FIG. 2 is a perspective view showing a panel according to the present invention.
FIGS. 3A and 3B show a panel mounting method, wherein FIG. 3A is a plan view when the panel is mounted vertically, and FIG. 3B is a plan view when the panel is mounted horizontally.
FIG. 4 is a side view showing a state in which a panel is attached to a housing via an extension member.
FIG. 5 is a plan view showing a modified embodiment of the splice unit according to the present invention.
FIG. 6 is a perspective view showing a conventional splice unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Splice unit 2 Case 2a Side plate 2b Back plate 2c Bottom plate 2d Front panel 3 Lead-in port 4 Optical cable 5 Cable clamp 6 Tension member 7 Tension member clamp 8 Panel 9 Optical fiber core wire 11 Slide case 12 Fusion tray 13 Optical cord 14 Flexible Tube 15 Connecting bracket 16 Connector

Claims (1)

A cable clamp that is installed in a rack for storing communication equipment and the like, and that fixes an optical cable to a housing; a tension member clamp that fixes a tension member of the optical cable; and a fusion portion of an optical fiber core wire A splicing unit including a fusion tray for storing an optical fiber drawing opening by opening back plates and side plates at two left and right corners of the rear side of the housing, and the cable clamp, the tension member clamp, Is arranged in a panel, and the panel is provided in a vertically standing state on the outside of the peripheral edge of the lead-in port or in a state where the panel is tilted sideways on the inside of the lead-in port , so that the drawing direction of the optical cable can be changed. A splice unit that features.

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