JP7051195B2 - Splice unit - Google Patents

Description

The present invention relates to a splice unit.

As described in Patent Document 1, it is known that a cable guide is provided inside a rectangular housing having a rectangular shape in a plan view, and an optical fiber is wired to the cable guide. When wiring an optical fiber in a cable guide, the optical fiber may be exposed and entered at the connection port of this cable guide. At this time, a cable clamp or the like as described in Patent Document 2 is used as a cable fixing portion, and this cable fixing portion is fixed to the outside of the housing.

Japanese Unexamined Patent Publication No. 2000-232273 Japanese Unexamined Patent Publication No. 2009-128483

However, with such a configuration, the cable fixing portion greatly protrudes from the housing. Since the housing as described in Patent Document 1 is housed in a box such as a rack, the fact that a space outside the housing is required means that the space must be secured in the box. There was a risk of increasing the size of the box.

The inventor of this case tried to solve this problem by diligently examining this point. An object of the present invention is to suppress the amount of the cable fixing portion for fixing the optical cable entering the housing at the peripheral edge of the housing to protrude outward from the housing.

In order to solve the above problems, the following means will be adopted. The first means is a splice unit into which an optical fiber is inserted, and is a splice unit in which a cable fixing portion for fixing an optical cable is detachably provided in a recess formed on the peripheral edge of the housing.

In the first means, it is preferable to have an opening in which an optical cable is inserted in the recess.

Further, it is preferable that the recess is formed by the outer surface portion of the housing and the inner surface portion erected inside the outer surface portion, and the opening is provided between the outer surface portion and the inner surface portion.

Further, it is preferable that the outer surface portions are formed on both sides of the inner surface portion and the openings are formed between the outer surface portions and the inner surface portions.

In the present invention, it is possible to suppress the amount of the cable fixing portion for fixing the optical cable entering the housing at the peripheral edge of the housing to protrude outward from the housing.

It is a perspective view of the splice unit which attached the cable fixing part to the housing. It is a perspective view of the splice unit before attaching the cable fixing part to a housing. It is a top view of the splice unit which shows the state which fixed the optical cable. It is a perspective view of the splice unit when the housing is placed vertically. It is a perspective view of the splice unit in a modification.

The embodiment for carrying out the invention is shown below. As can be understood from FIGS. 1 to 3, the splice unit 1 of the present embodiment is provided with a cable fixing portion 13 for fixing the optical cable 3 in the recess 12 formed on the peripheral edge of the housing 11. The optical fiber 31 is inserted into the splice unit 1, but since the cable fixing portion 13 for fixing the optical cable 3 provided with the optical fiber 31 to be inserted is provided in the recess 12, the cable fixing portion 13 is a casing. It is possible to suppress the amount of protrusion to the outside of the body 11.

Here, the splice unit 1 will be described. The splice unit 1 is housed in a box such as a rack, and includes a housing 11. The optical fiber 31 is drawn from the outside into the housing 11 of the splice unit 1. The optical fiber 31 is usually routed to the vicinity of the splice unit 1 as an optical cable 3 whose outer circumference is covered so that a plurality of fibers are bundled. The optical fiber 31 brought around the splice unit 1 in such a state is inserted into the splice unit 1. The optical fiber 31 drawn into the fusion splicer 14 through the cable fixing portion 13 such as a cable clamp is fused and connected, then wound up by the extra length tray 15, and exits from the outlet of the extra length tray 15. Be lined. The optical fiber 31 drawn out from the outlet is connected to the adapter 16 by inserting the connector attached to the end into the adapter 16.

The housing 11 is provided with a cable duct 17 that regulates the arrangement area of the optical fiber 31. By arranging the optical fiber 31 in the cable duct 17, damage to the cable fiber due to excessive bending or the like can be suppressed. Since the splice unit 1 of the present embodiment is configured so that the portion including the adapter 16 can be pulled out, the cable duct 17 is configured in a bellows shape so that the portion can be moved according to the portion including the adapter 16. The section provided by the cable duct 17 forms a linear wiring space 26 that guides the optical fiber 31 substantially linearly, and is curved to guide the optical fiber 31 substantially in a curved line within a range in which bending of the optical fiber 31 is allowed. The wiring space 27 is formed.

Next, the housing 11 will be described. As shown in FIG. 2, the housing 11 of the present embodiment is formed in a substantially rectangular parallelepiped shape. The surface on which the plurality of adapters 16 are provided allows the user to insert a cable from the outside of the splice unit 1, and when the housing 11 is used horizontally, it is usually a box such as a rack. It is placed on the front side of. On the other hand, a recess 12 is formed on the surface side facing this surface.

The recess 12 of the present embodiment includes an outer surface portion 21 and an inner surface portion 22 that form an outer shell of the housing 11. The inner surface portion 22 forming the outer shell is arranged adjacent to the outer surface portion 21, but is formed so as to stand inside the outer surface portion 21. The cable fixing portion 13 is provided on the inner surface portion 22 formed by rising from the bottom surface 25 of the housing 11, and the inner surface portion 22 provides a space in which the cable fixing portion 13 is located and a casing in which wiring and members are located. It is possible to partition the space inside the body 11 and prevent mutual interference.

The cable fixing portion 13 of the present embodiment is composed of a plurality of fixing members 63 and an L-shaped fixing bracket 64 for fixing the fixing members 63. The fixing metal fitting 64 is detachably fixed to the inner surface portion 22, and each fixing member 63 is arranged so as to be inclined toward the opening portion 23. Further, each fixing member 63 of the present embodiment includes a tension member fixing portion 52 for fixing the tension member 61 in the optical cable 3, and a cable clamp portion 51 for fixing the optical cable 3 itself.

Since the recess 12 of the present embodiment is formed with an opening 23 for inserting the optical cable 3 into the housing 11, it is possible to prevent the optical cable 3 and the optical fiber 31 from protruding to the outside of the housing 11, and the work can be performed. It is possible to prevent people, doors, etc. from getting caught in these.

The opening 23 of the present embodiment is provided at a position where the outer surface portion 21 and the inner surface portion 22 are separated from each other to form an opening 23 through which the optical cable 3 enters the housing 11. In this way, the opening 23 is formed by forming the outer surface portion 21 and the inner surface portion 22. The outer surface portion 21 and the inner surface portion 22 are formed in a stepped shape. Further, the surface on which the adapter 16 is provided and the side surface 24 different from the surface on which the recess 12 is provided also have an opening 29 through which the optical cable 3 can be inserted.

The recess 12 of the present embodiment forms outer surface portions 21 on both sides of the inner surface portion 22. Further, the opening 23 is formed between each outer surface portion 21 and the inner surface portion 22. That is, since the optical cable 3 can be entered from either side of both ends of the inner surface portion 22, the entry direction can be changed according to the usage situation. The outer surface portion 21 is formed at a corner portion of the housing 11.

As shown in FIG. 2, the housing 11 of the present embodiment forms the linear wiring space 26 of the optical cable 3 inside the inner surface portion 22, and forms the curved wiring space 27 of the optical cable 3 inside the outer surface portion 21. There is. Since the width of the wiring space of the linear wiring space 26 is narrower than that of the curved wiring space 27, it is not necessary to expand the inside of the housing 11 even if the recess 12 is provided, and the space can be effectively used.

The splice unit 1 of the present embodiment can change the mounting position of the cable duct 17. As shown in FIG. 1, when the splice unit 1 is placed horizontally, the curved wiring space 27 can be positioned not only on the right side of the paper surface but also on the left side of the paper surface. In either case, the optical cable 3 may be inserted from the opening 23 on the side where the cable duct 17 is not arranged or the side where the curved wiring space 27 is not provided.

In this embodiment, wiring can be performed from the vertical and horizontal directions of the box body. When wiring is performed from the vertical direction, it is sufficient to provide a wiring space only in the recess 12 on the peripheral edge of the housing 11, so that it is possible to suppress the amount of protrusion of the peripheral edge of the housing 11 due to the wiring of the optical cable 3.

As shown in FIG. 4, when the splice unit 1 is used vertically by fixing it to a pair of horizontally passed mount rails, the cable duct 17 is arranged so that the curved wiring space 27 is located on the lower side. The portion around the corner of the side surface 24 of the housing 11 is configured to support the cable duct 17. Therefore, the cable guide can be suspended while maintaining the allowable bending radius of the optical fiber 31 or more, and the cable guide can be prevented from popping out from the housing 11.

When the splice unit 1 is used vertically, it is difficult for the optical cable 3 to enter the housing 11 through the opening or opening 23 located on the lower side when wiring from the lower side, so the opening 23 located on the upper side. You can enter through. By using this opening 23, it is possible to enter the housing 11 while suppressing bending of the optical cable 3.

When wiring from the upper side in a vertical installation, the wire may be entered from the opening 29 of the side surface 24 located on the upper side. By using this opening 29, it is possible to enter the housing 11 while suppressing bending of the optical cable 3. The pair of mount rails are arranged vertically, and the splice unit 1 can be used horizontally.

In the examples described so far, the cable fixing portion 13 is provided so that the optical cable 3 is fixed in the direction along the bottom surface 25 of the housing 11, but for example, as in the modified example shown in FIG. 5, the optical cable is provided. It is also possible to fix the 3 in a direction extending in a direction intersecting the bottom surface 25 of the housing 11.

Although the embodiment has been described above with reference to one example, the present invention is not limited to the above embodiment and can be various modes. For example, in the present embodiment, the optical fiber exposed by removing the coating from the optical cable is inserted, but it is not necessary to limit the optical fiber to such a form. That is, the covered optical cable may be inserted into the housing.

The cable fixing does not have to be a cable clamp, and may be a cable clamp unit. Further, the cable may be wound directly around the inner surface portion with a band. In that case, it is preferable to form a hole through which the band passes on the inner surface portion.

The recess does not need to be provided at a position facing the surface on which the adapter is provided, and can be provided on the side surface of the housing or the like.

1 Splice unit 3 Optical cable 11 Housing 12 Recess 13 Cable fixing part 21 Outer surface part 22 Inner surface part 23 Opening part 26 Straight wiring space 27 Curved wiring space

Claims (1)

It is a splice unit into which an optical fiber is inserted.
A cable fixing part for fixing the optical cable is detachably provided in the outer surface portion of the housing and the concave portion opened in the vertical direction formed on the peripheral edge of the housing by the inner surface portion erected inside the outer surface portion.
An outer surface portion is provided on both sides of the inner surface portion, and an opening through which an optical cable can be inserted is provided between each outer surface portion and the inner surface portion.
A splice unit in which a linear wiring space for an optical cable is formed inside the inner surface, and a curved wiring space for the optical cable is formed inside the outer surface.

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