JP2018092066A - Splice unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a splice unit that suppresses the amount of protruding, outward from a housing, of a cable fixing part for fixing, at the periphery of the housing, an optical cable wired into the housing.SOLUTION: A splice unit 1 into which an optical fiber 31 is wired detachably includes a cable fixing part 13 for fixing an optical cable 3 in a recess 12 formed at the periphery of a housing 11, and an opening for wiring the optical cable into the recess is formed. The recess is formed by an outer surface part 21 of the housing and inner surface part 22 erected inside the outer surface part. The opening is provided between the outer surface part and the inner surface part.SELECTED DRAWING: Figure 3

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 in plan view, and an optical fiber is wired to the cable guide. When an optical fiber is wired in the cable guide, the optical fiber may be exposed at the connection port of the cable guide. At this time, a cable clamp or the like as described in Patent Document 2 is used as the cable fixing portion, and this cable fixing portion is fixed to the outside of the casing.

JP 2000-232273 A JP 2009-128483 A

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

  The inventor of the present case tried to solve the problem by diligently examining this point. An object of the present invention is to suppress an amount of a cable fixing portion that fixes an optical cable inserted into a casing at the periphery of the casing and protrudes outward from the casing.

  In order to solve the above problems, the following means are 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 in the peripheral edge of the casing.

  In the first means, it is preferable that an opening for inserting the optical cable is formed in the recess.

  Moreover, it is preferable that a recessed part is formed by the outer surface part of a housing | casing and the inner surface part standingly arranged inside the outer surface part, and it is set as the structure which provided the opening part between the outer surface part and the inner surface part.

  Moreover, it is preferable that an outer surface part is formed on both sides of the inner surface part, and an opening is formed between each outer surface part and the inner surface part.

  In the present invention, it is possible to suppress the amount of the cable fixing portion that fixes the optical cable inserted into the casing at the periphery of the casing and protrudes outward from the casing.

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

  The form for implementing this invention is shown below. As 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 a recess 12 formed on the periphery of the housing 11. The splice unit 1 is for receiving an optical fiber 31. Since the cable fixing portion 13 for fixing the optical cable 3 having the optical fiber 31 to be inserted is provided in the recessed portion 12, the cable fixing portion 13 is provided in the housing. It is possible to suppress the amount of the body 11 protruding outward.

  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. An optical fiber 31 is drawn into the casing 11 of the splice unit 1 from the outside. The optical fiber 31 is usually routed to the vicinity of the splice unit 1 as an optical cable 3 whose outer periphery is covered so that a plurality of optical fibers 31 are bundled. In this state, the optical fiber 31 provided around the splice unit 1 is inserted into the splice unit 1. The optical fiber 31 drawn into the fusion tray 14 via the cable fixing portion 13 such as a cable clamp is fused and connected, and then wound around the extra length tray 15 and exits from the outlet of the extra length tray 15. Lined. The optical fiber 31 drawn out from the outgoing line port is connected to a connector by inserting a connector attached to the end into the adapter 16.

  In the housing 11, a cable duct 17 that regulates an arrangement region of the optical fiber 31 is provided. By disposing the optical fiber 31 in the cable duct 17, it is possible to suppress breakage of the cable fiber due to excessive bending or the like. Since the splice unit 1 of the present embodiment is configured to be able to pull out a portion including the adapter 16, the cable duct 17 is configured in a bellows shape so that the splice unit 1 can move according to the portion including the adapter 16. The section formed by the cable duct 17 forms a straight wiring space 26 that guides the optical fiber 31 approximately linearly, and also curves the optical fiber 31 approximately curvedly within a range in which the bending of the optical fiber 31 is allowed. A 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 a user to insert a cable from the outside of the splice unit 1. When the casing 11 is used in a horizontal position, a box such as a rack is usually used. It is arranged on the front side. On the other hand, a concave portion 12 is formed on the surface side facing this surface.

  The concave portion 12 of the present embodiment includes an outer surface portion 21 and an inner surface portion 22 that form the outline of the housing 11. The inner surface portion 22 that forms the outer shell is disposed adjacent to the outer surface portion 21, but is erected on the inner side of the outer surface portion 21. The cable fixing portion 13 is provided on an inner surface portion 22 formed by rising from the bottom surface 25 of the housing 11. The inner surface portion 22 allows the cable fixing portion 13 to be located, and a housing in which wiring and members are positioned. The space in the body 11 can be partitioned and mutual interference can be prevented.

  In addition, the cable fixing | fixed part 13 of this embodiment is comprised by the some fixing member 63 and the L-shaped fixing metal fitting 64 which fixes it. The fixing metal fitting 64 is detachably fixed to the inner surface portion 22, and each fixing member 63 is arranged to be inclined toward the opening portion 23. Each fixing member 63 of this embodiment includes a tension member fixing portion 52 that fixes the tension member 61 in the optical cable 3 and a cable clamp portion 51 that fixes the optical cable 3 itself.

  Since the opening portion 23 for entering the optical cable 3 into the housing 11 is formed in the concave portion 12 of the present embodiment, the optical cable 3 and the optical fiber 31 can be prevented from protruding outside the housing 11, It is possible to prevent persons or doors from being caught by these.

  The opening 23 of the present embodiment forms the opening 23 for entering the optical cable 3 into the housing 11 by providing the outer surface portion 21 and the inner surface portion 22 at positions separated from each other. If it does in this way, the opening part 23 will be formed by formation of the outer surface part 21 and the inner surface part 22. FIG. The outer surface portion 21 and the inner surface portion 22 are formed in a stepped shape. Further, an opening 29 through which the optical cable 3 can be inserted is provided on a side surface 24 different from the surface on which the adapter 16 is provided and the surface on which the recess 12 is provided.

  The concave portion 12 of the present embodiment has outer surface portions 21 formed on both sides of the inner surface portion 22. An opening 23 is formed between each outer surface 21 and inner surface 22. That is, since the optical cable 3 can be inserted from either side of the both ends of the inner surface portion 22, the incoming line direction can be changed according to the use 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 has a straight wiring space 26 of the optical cable 3 formed inside the inner surface portion 22 and a curved wiring space 27 of the optical cable 3 formed inside the outer surface portion 21. Yes. Since the straight wiring space 26 has a narrower wiring space width than the curved wiring space 27, it is not necessary to enlarge 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 attachment 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 page but also on the left side of the page. In either case, the optical cable 3 may be inserted from the opening 23 on the side where the cable duct 17 is not disposed or on the side where the curved wiring space 27 is not provided.

  In this embodiment, it can wire from the up-down and left-right direction of a box. When wiring is performed in the vertical direction, it is only necessary to provide a wiring space in the recess 12 at the periphery of the housing 11, and thus it is possible to suppress the protrusion amount of the periphery 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 in a vertical position by being fixed to a pair of horizontally mounted mounting rails, the cable duct 17 is arranged so that the curved wiring space 27 is located on the lower side. The portions around the corners of the side surface 24 of the housing 11 are configured to support the cable duct 17. Therefore, it is possible to suspend the cable guide while maintaining the allowable bending radius or more of the optical fiber 31 and to prevent the cable guide from jumping out of the housing 11.

  When the splice unit 1 is used in a vertical position, it is difficult to enter the optical cable 3 into the housing 11 through the opening and the opening 23 located on the lower side when wiring from the lower side. Therefore, the opening 23 located on the upper side. You can enter through the line. If this opening 23 is used, it is possible to enter the housing 11 while suppressing the bending of the optical cable 3.

  In the case of wiring from the upper side in the vertical position, it is only necessary to enter from the opening 29 of the side surface 24 located on the upper side. If this opening 29 is used, it is possible to enter the housing 11 while suppressing the bending of the optical cable 3. Note that the pair of mounting rails can be arranged vertically and the splice unit 1 can be used in a horizontal position.

  In the example 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. For example, as in the modification shown in FIG. 3 may be fixed in a direction extending in a direction intersecting with the bottom surface 25 of the housing 11.

  As mentioned above, although embodiment was described centering on one example, this invention is not limited to the said embodiment, It can be set as various aspects. For example, in the present embodiment, the optical fiber exposed by covering the optical cable is inserted, but it is not necessary to limit to such a form. That is, the coated optical cable may be inserted into the housing.

  The cable fixing need not be a cable clamp, but may be a cable clamp unit. Alternatively, the cable may be wound directly on the inner surface with a band. In that case, it is preferable to form a hole through which the band passes in the inner surface portion.

  The concave portion 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.

DESCRIPTION OF SYMBOLS 1 Splice unit 3 Optical cable 11 Case 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 (4)

  A splice unit into which an optical fiber is inserted, wherein a cable fixing portion for fixing an optical cable is detachably provided in a recess formed in a peripheral edge of the casing.   The splice unit according to claim 1, wherein an opening for receiving an optical cable is formed in the recess.   2. The splice unit according to claim 1, wherein the concave portion is formed by an outer surface portion of the housing and an inner surface portion erected inward from the outer surface portion, and the opening portion is provided between the outer surface portion and the inner surface portion.   The splice unit according to claim 3, wherein an outer surface portion is formed on both sides of the inner surface portion, and an opening is formed between each outer surface portion and the inner surface portion.

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