JP4869677B2 - Splitter module - Google Patents

Description

  The present invention relates to a splitter module that distributes an optical cable. More specifically, the splitter module has a core receiving portion that receives and receives an extra length portion of the optical cable, and distributes each end of the optical fiber stored in the core receiving portion. The present invention relates to a splitter module comprising a connector housing portion provided with an optical socket to be connected, and having a reduced external appearance shape by a case structure and a wiring form.

  Conventionally, an optical communication cable has been drawn into a management room of a building such as a building, and an optical cable containing a plurality of optical fiber cores is received in a branch connection box, and a distribution optical cable is wired to each service area. is doing. As shown in FIG. 8, the conventional distribution optical cable includes a plug 1 that can be connected to a single optical cable via a connector, and a multi-fiber optical cable in which two multi-core cables 2 and 3 are distributed, respectively. The plugs 2a and 3a are provided at the other ends of the multi-core cables 2 and 3 that are covered with, led out and separated. With such a distribution optical cable, one optical cable can be distributed. Although FIG. 8 shows a two-distribution optical cable, in the case of a four-core tape core wire, four optical cables can be distributed. (For example, see Patent Document 1)

Japanese Patent Application Laid-Open No. 11-337785 (paragraphs [0011] to [0013], FIGS. 1 and 2)

  However, in the above-mentioned conventional distribution optical cable, when an optical communication network is constructed in a building such as an apartment house, the service area becomes very large, and when a conventional distribution optical cable is used for a branch connection box, the distribution optical cable work There is a drawback that the shape becomes large because a space and a wiring space are required. In addition, the distribution optical cable is covered with a coated tube, has a large diameter, and needs to be enlarged in the shape of the branch junction box. There is no space in an existing building management room, etc., making installation difficult. In order to install a branch junction box in a management room or the like, it is desirable to be as small as possible, and the conventional distribution optical cable has room for improvement. In addition, when a large number of optical fiber cores are bundled and wired, the number on the output side is increased, which makes it difficult to perform construction and troublesome maintenance and inspection.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and is a splitter capable of reducing the external shape, facilitating the arrangement of the optical fiber core wire, and facilitating construction and maintenance inspection work. The purpose is to provide modules.

The present invention solves the above problems, and the invention of claim 1 is a splitter module for distributing an optical fiber core wire.
A core wire receiving portion that receives the extra length portion of each core wire branched from the optical fiber core wire at an allowable curvature radius with a circular core wire guide portion;
Socket mounting for mounting each optical socket to which the end of each core wire led out from the opening is connected, and an opening for inserting each core wire that is branched over the core wire receiving portion The socket mounting portion is disposed on one side of the case structure, and the opening is disposed in the shape of a long hole on the opposite side of the case structure. A connector housing portion that draws a core wire in a curved line from different positions of the opening ;
It becomes one box shape by stacking the lid that covers the case opening of the connector housing,
The core wire receiving portion receives a group of the core wires over an outer peripheral side of the core wire guide portion of the core wire receiving portion, and receives the remaining group of the core wires of the core wire receiving portion. The guide wire is received in a S-shape, and each core wire from the core wire receiving portion is drawn into the connector housing portion through the elongated hole-like opening, and the end of each core wire is connected. Mounting each of the optical sockets to the socket mounting portion, covering the case opening of the connector housing portion with the lid, fixing the optical sockets to the socket mounting portion, and the optical fiber core wire. The splitter module is characterized in that each core wire is distributed while maintaining an allowable curvature radius.

According to a second aspect of the present invention, there is provided a splitter module comprising a raised pedestal for attaching the splitter module according to the first aspect at the bottom of the core wire receiving portion .

In the invention of claim 1, in the splitter module for distributing the optical fiber core wire,
A core wire receiving portion that receives the extra length portion of each core wire branched from the optical fiber core wire at an allowable curvature radius with a circular core wire guide portion;
Socket mounting for mounting each optical socket to which the end of each core wire led out from the opening is connected, and an opening for inserting each core wire that is branched over the core wire receiving portion The socket mounting portion is disposed on one side of the case structure, and the opening is disposed in the shape of a long hole on the opposite side of the case structure. A connector housing portion that draws a core wire in a curved line from different positions of the opening ;
It becomes one box shape by stacking the lid that covers the case opening of the connector housing,
The core wire receiving portion receives a group of the core wires over an outer peripheral side of the core wire guide portion of the core wire receiving portion, and receives the remaining group of the core wires of the core wire receiving portion. The guide wire is received in a S-shape, and each core wire from the core wire receiving portion is drawn into the connector housing portion through the elongated hole-like opening, and the end of each core wire is connected. Mounting each of the optical sockets to the socket mounting portion, covering the case opening of the connector housing portion with the lid, fixing the optical sockets to the socket mounting portion, and the optical fiber core wire. Since the splitter module is characterized in that each core wire is distributed while maintaining an allowable curvature radius, a wiring form for wiring each core wire, and a stack structure of the core wire receiving portion and the connector housing portion, Makes it possible to store the branch wiring part in a small case A. This splitter module is used by being incorporated in a branch connection box (hereinafter referred to as a splitter device) that is a relay point of an optical cable drawn from the station side, so that the splitter module itself can be miniaturized, and the shape of the splitter device is also miniaturized. Is possible. In addition, the branch wiring part is modularized, and wiring work is simplified, and if an abnormality such as disconnection occurs, maintenance inspection can be performed simply by replacing the splitter module at that location. There is an advantage that the workability is simple.

In the invention of claim 1, the core receiving part is provided with the circular first and second core guides, and the group of the cores includes the first and second cores. The other group of core wires that are stretched in the S-shape while spanning the outer peripheral side of the guide portion are spanned to the first core wire guide portion and between the first and second core wire guide portions. And passing through the opening to connect the end of each core wire to the optical socket, respectively. Since the splitter module according to item 1, the cores are led out from different positions by spanning one group of the cores in the forward direction and the other group in the reverse direction and bent within the allowable radius of curvature. The cores of each group can be routed so that they cross each other, and the end of each core can be connected to the connector housing. It is possible to narrow the over scan, there is an advantage that it is possible to reduce the size of the splitter module.

According to a second aspect of the present invention, since the splitter module is provided with a raised pedestal for attaching the splitter module according to the first aspect at the bottom of the core wire receiving portion, the optical socket of the splitter module is provided. Thus, there is an advantage that the external connector can be easily inserted and removed, and workability is improved.

  Hereinafter, a splitter module according to the present invention will be described with reference to the drawings. The splitter module of the present invention is used for a splitter device that draws an optical cable into a building from a station side in an optical communication network or a case where the optical cable is distributed directly from a splitter module. Referring to the drawings, FIG. 1 is a perspective view showing an embodiment of a splitter module of the present invention, and an optical socket is not shown. 2A and 2B show the splitter module of the present embodiment, where FIG. 2A is a front view thereof, FIG. 2B is a lower side view thereof, FIG. 2C is a side view of the connector side thereof, and FIG. FIG. FIG. 3 is a core wire receiving portion in the present embodiment, (a) is an inner surface view of the case, (b) is a sectional view taken along the line BB, (c) is a lower side view thereof, and (d) is a lower side view thereof. It is principal part sectional drawing of the CC arrow. 4A and 4B show a connector housing portion, FIG. 4A is an inner surface view thereof, FIG. 4B is a side view thereof, FIG. 4C is a side view of the connector side, FIG. 4D is a lower side view, and FIG. The principal part sectional drawing of a vision, (d) is principal part sectional drawing of EE arrow. 5A and 5B show a lid, FIG. 5A is a top view, FIG. 5B is a side view, FIG. 5C is a cross-sectional view taken along the line F-F, FIG. 5D is a bottom side view, and FIG. It is principal part sectional drawing of GG arrow. FIG. 6 is a raised pedestal portion, (a) is a front view thereof, (b) is a side view thereof, and (c) is a lower side view thereof. FIG. 7 is a wiring diagram of the core wire of the present embodiment, (a) is a wiring diagram of the core wire receiving portion, and (b) is a wiring diagram of the connector housing portion.

  As shown in FIGS. 1 and 2, the splitter module of this embodiment has a box-like appearance structure, and an optical cable 9 to which an optical connector 8 is connected is drawn into the splitter module 10. A splitter module 10 having a shape includes a core receiving section 11 that receives an optical cable by branching, and an end of each core that branches an optical fiber core received by the core receiving section 11 (hereinafter abbreviated as a core). Are connected to each socket, and a lid 13 that covers the opening of the connector housing 12 is provided. A raised pedestal 14 is provided at the bottom of the splitter module 10. The connector housing portion 12 is provided with a socket mounting portion 15 for mounting the optical socket 16. An external connector 17 provided at the end of the optical cable 18 is inserted into the optical socket 16 and connected to an optical access unit or the like and wired to each service area of optical communication.

  As shown in FIG. 3, the core wire receiving part 11 has a case structure, an optical cable lead-in port 11a is provided in the case longitudinal side wall part, and a guide groove 11b for guiding the optical cable is provided in the bottom surface of the case. A branch portion 11c for fixing and distributing the optical cable in the guide groove 11b is provided, and further, circular core wire guide portions 11d and 11e are provided, and a tongue piece 11g is provided from the center of the case longitudinal side wall portion, A tongue piece 11f protrudes from the side wall portion of the guide groove 11b facing the tongue piece 11g, and these tongue pieces 11g and 11f are for preventing the core wire from being scattered. In addition, four engagement protrusions 11h are provided for combining the core receiving part 11 of the case structure with another case. Reference numeral 11 i denotes an attachment hole for fixing the splitter module 10 to the raised pedestal portion 14. The splitter module 10 may not use the raised pedestal portion 14.

  As shown in FIG. 4, the connector storage portion 12 has a case structure, and is provided with a socket mounting portion 15 to which each core wire is connected, and each socket mounting portion 15 is provided with an opening 12 a. In the central part of the case, two support columns 12b with through holes are provided, and on the side opposite to the socket mounting part 15, an opening 12c through which the core wire is inserted is provided. Four engaging portions 12d for combining with the case constituting the core wire receiving portion 11 are provided on the bottom surface portion of the case. In this embodiment, as an example, two 4-core tape cores are used as branch cores, and eight socket mounting portions 15 are provided. Further, engaging portions 12 e are provided on the upper and lower side wall portions of the connector housing portion 12. The socket mounting portion 15 is provided with an optical socket 16, and an external connector 17 having an optical cable 18 connected to the optical socket 16 is mounted.

  As shown in FIG. 5, the lid 13 covers the case opening of the connector housing 12, and is provided with eight openings 13 a for fixing the optical socket 16, so that the splitter module 10 is raised. The through-hole 13b for attaching to is provided. Further, a locking portion 13 c is provided on the upper and lower side portions of the lid body 13, and the locking portion 13 c is provided so as to mesh with the engaging portion 12 e of the case of the connector storage portion 12. The lid body 13 is closed by mounting the optical socket 16 on the socket mounting portion 15 of the connector housing portion 12, so that protrusions provided on the upper and lower sides of the optical socket 16 are formed on the opening 12 a and the lid body 13 of the socket mounting portion 15. The optical socket 16 is mounted on the socket mounting portion 15 by engaging with the provided through hole 13b.

  The splitter module 10 is formed into a single box shape by stacking the core wire receiving portion 11, the connector housing portion 12, and the lid body 13. At the bottom of the box-shaped splitter module 10, a raised pedestal 14 is inserted into the mounting hole 11 i of the connector housing 12 and the through hole 13 b of the lid 13, and is inserted into the through hole 14 a of the raised pedestal 14. The splitter module 10 is attached to the raised pedestal 14 by tightening with a nut. Further, 14b of the raised pedestal 14 is a through hole for fixing to the pedestal of the splitter device. Even if the splitter module 10 is downsized, the connector mounting port is raised by attaching the splitter module 10 to the raised pedestal 14. It becomes easy to insert and remove the connector from the optical socket 16, and the workability during construction, adjustment or inspection is improved.

Next, the wiring form of this embodiment will be described with reference to FIG. A single optical cable is drawn from the lead-in port 11a of the core receiving part 11 and guided to the guide groove 11b, and is branched into two four-core tape cores T1 and T2 at the branching part 11c. The branched tape cores T1 and T2 are wound around the excess length of the tape cores T1 and T2 in a loop or S-shape with an allowable curvature radius by the core guides 11d and 11e in the core receiver 11. further through the opening 12c of the ribbon T1, T2 and subdivided each core _T1 1 _{to T1} 4 _was, T2 1 to T2 ₄ the connector housing portion 12, each bent at a range of allowable curvature radius on the light socket 16 It is connected.

The loop shape indicates a wiring form in which the tape core wire T1 (core wires T1 _{1 to} T1 ₄ ) guided to the guide groove 11b is wound around the outer periphery of the core wire guide portions 11d and 11e. The tape core T2 (cores T2 _{1 to} T2 ₄ ) guided to the guide groove 11b is passed over the core guide 11d and passed between the core guide 11d and the core guide 11e. This is a wiring form that spans from the guide portion 11e to the core wire guide portion 11d and is led out from the opening portion 12c of the connector storage portion 12.

In this wiring form, the tape core T1 is turned in the forward direction, while the tape core T2 is turned in the reverse direction to enter the connector housing 12 from a different position of the opening 12c of the connector housing 12. And draw a curve so that a group of the cores (T1 _{1 to} T1 ₄ ) of the tape cores T1 and T2 intersect a group of the cores (T2 _{1 to} T2 ₄ ). An end can be connected to each optical socket 16. By adopting such a wiring configuration, it is possible to prevent an increase in the space required for wiring.

  The splitter module according to the present embodiment is used by being incorporated in a splitter device for wiring an optical cable to an optical communication service area. In the present embodiment, the four-core fiber core is illustrated as an example of the branched core wire, but the technical idea of the present invention can be applied even in the case of five or eight core wires. However, it is obvious that an optical fiber core other than the tape core may be used.

  As described above, in the present embodiment, by winding each tape core wire in a forward turn and a reverse turn, the wiring configuration is compactly combined, and the core wire receiving portion and the connector housing portion are stacked. Not only can the appearance of the splitter module be reduced in size, but also the cores can be easily distinguished and the workability is improved.

  As an application example of the present invention, it can be incorporated into a splitter device at a relay point of an optical cable in optical communication.

It is a perspective view which shows one Embodiment of the splitter module of this invention, and abbreviate | omitting illustration of the optical socket. (A) is a front view of the splitter module of the present embodiment, (b) is a lower side view thereof, (c) is a side view of the connector side thereof, and (d) is a cross-sectional view of an essential part taken along the line AA. is there. (A) is a case inner surface view of the core wire receiving portion in the present embodiment, (b) is a sectional view taken along the line BB, (c) a lower side view thereof, and (d) is a view taken along the line CC. It is principal part sectional drawing. (A) is an inner surface view of the connector housing portion of the present embodiment, (b) is a side view thereof, (c) is a side view of the connector side, (d) is a lower side view thereof, and (e) is a DD thereof. The principal part sectional view of an arrow view, (d) is the principal part sectional view of the EE arrow. (A) is a top view of the lid body of the present embodiment, (b) is a side view thereof, (c) is a cross-sectional view of an essential part of the FF arrow, (d) is a bottom side view thereof, (e) These are the principal part sectional drawings of the GG arrow. (A) is the front view of the raising base part of this embodiment, (b) is the side view, (c) is the lower side view. (A) is the wiring diagram of the core wire of this embodiment, (b) is the wiring diagram of a connector accommodating part. It is a figure which shows the conventional distribution optical cable.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Connector storage case 11 Core wire receiving part 11a Pull-in port 11b Guide groove 11c Branch part 11d, 11e Core wire guide part 11g, 11f Tongue piece 11i Mounting hole 12 Connector storage part 12a Opening part 12b Prop 12c Opening part 12d Engaging part 13 Lid 13a Opening 13b Through-hole 13c Locking part 14 Raised base 15 Socket mounting part 16 Optical socket 16a Engagement hole 17 Connector 18 Optical cable T1, T2 Tape core T1 _{1 to} T1 ₄ , T2 _{1 to} T2 ₄ core ( Optical fiber core)

Claims (2)

In the splitter module that distributes the optical fiber core,
A core wire receiving portion that receives the extra length portion of each core wire branched from the optical fiber core wire at an allowable curvature radius with a circular core wire guide portion;
Socket mounting for mounting each optical socket to which the end of each core wire led out from the opening is connected, and an opening for inserting each core wire that is branched over the core wire receiving portion The socket mounting portion is disposed on one side of the case structure, and the opening is disposed in the shape of a long hole on the opposite side of the case structure. A connector housing portion that draws a core wire in a curved line from different positions of the opening ;
It becomes one box shape by stacking the lid that covers the case opening of the connector housing,
The core wire receiving portion receives a group of the core wires over an outer peripheral side of the core wire guide portion of the core wire receiving portion, and receives the remaining group of the core wires of the core wire receiving portion. The guide wire is received in a S-shape, and each core wire from the core wire receiving portion is drawn into the connector housing portion through the elongated hole-like opening, and the end of each core wire is connected. Mounting each of the optical sockets to the socket mounting portion, covering the case opening of the connector housing portion with the lid, fixing the optical sockets to the socket mounting portion, and the optical fiber core wire. A splitter module characterized in that each core wire is distributed while maintaining an allowable curvature radius. The splitter module characterized by providing the raising base for attaching the splitter module of Claim 1 in the bottom part of the said core wire receiving part .

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