JP2019113640A - Optical fiber branch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical fiber turnout capable of increasing an optical fiber in a space-saving manner. SOLUTION: An optical fiber branching device is formed adjacent to an optical fiber terminal 1 arranged side by side on one side surface of a storage container 100 of the optical fiber branching device and an optical fiber terminal on one side surface, and the optical fiber is inserted therethrough. It is formed by a through hole 2 and a support piece 31 having a plurality of slits, and the plurality of slits are stored in a storage container facing each of the through holes and inserted into the through hole in a state where it can be locked to an optical fiber terminal. A grip portion 3 for gripping the optical fiber 200 to be formed by a slit is provided. [Selection diagram] Fig. 1

Description

  The present invention relates to the field of communications, and more particularly to an optical fiber branching device capable of easily carrying an optical fiber.

  In the communication field, with the increase in the amount of communication, the need for optical fiber line increases. In particular, in an optical fiber branching apparatus which is an optical communication device, there is a high demand for optical fiber wire increase, with a background of an increase in the amount of communication and a need for enhancement of a backup line.

  As such an optical fiber branching device, for example, there is an optical bypass switch, and in a normal state, optical communication is performed with an optical network by connecting to a switching hub or the like, and power loss of a node occurs in the optical network. In this case, it has a function to prevent the data transmission from being interrupted by bypassing the node (for example, detouring of the optical line by switching hub disconnection). The switching of this line can be triggered not only by powering off, but also by remote input control, setting switch, and remote switching control by SNMP. In addition, there is also a system that allows an administrator to switch the line from the remote and to switch the line according to the light reception level.

  As described above, the optical bypass switch maintains smooth communication continuity even when communication interruption of the optical network occurs, and plays an extremely important role in constructing a fault tolerant system.

  Furthermore, at present, there is a high need for an increase in the amount of communication and a need for enhancement of a backup circuit, and an optical fiber branching unit capable of easily expanding an optical fiber which is a circuit of an optical bypass switch is desired.

  As a conventional technique for fixing an optical fiber, for example, an optical fiber is fixed to an optical fiber retaining portion for the purpose of holding the optical fiber inserted into the optical fiber installation pipeline at the end of the pipeline. An optical fiber retention tool is known (see, for example, Patent Document 1). Besides the above, for example, an optical fiber clamp capable of holding a plurality of optical fibers is also known for the purpose of improving operability in wiring the optical fibers (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 11-190805 JP 2000-35516 A

  However, the conventional technology for fixing an optical fiber is limited to a device for fixing an optical fiber, and is not a configuration that enables an optical fiber to be added by adapting to an optical fiber branching device such as an optical bypass switch. That is, it is not the structure which adapts to optical fiber branching devices, such as an optical bypass switch, and enables expansion of an optical fiber.

  Since the optical fiber has a small diameter of less than 1 mm and there is a risk of breaking the cable during operation, when incorporating an optical component such as an optical coupler or an optical switch inside the device, the optical fiber itself should be housed inside the device, It is usual that the connection with the external interface is made via the optical adapter so that the optical fiber is not directly touched. However, in order to miniaturize the device so that there is no space for placing the optical adapter in the device outer frame, it is necessary to pull the optical fiber out of the device. When the optical fiber is pulled out of the device, if it is tightened and fixed like a normal metal wire, a side pressure is applied to the optical fiber to increase the optical loss. Therefore, a method of fixing with a resin such as epoxy or an adhesive may be considered, but skill is required for handling and working with solvents and the like, and it takes time for curing and drying, so productivity is poor.

  That is, if an apparatus for fixing the above-described conventional optical fiber is to be housed in the housing of the optical fiber branching device, a housing capable of housing the volumes of the above-mentioned optical fiber retention tool and optical fiber clamp. Since the size of the body is required and the space saving of the present optical fiber branching unit is extremely made, the enlargement of the casing can not be avoided in terms of the structure.

  Thus, an optical fiber splitter capable of increasing the number of optical fibers in a space-saving manner, for example, an optical fiber splitter capable of increasing the number of optical fibers while maintaining the compact size of the existing optical fiber splitter is desired. However, at present there is no such thing.

  The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an optical fiber branching device capable of increasing the number of optical fibers in a space-saving manner.

  The optical fiber branching device according to the present invention is formed adjacent to the optical fiber terminals on the side surface of the storage container of the optical fiber branching device and a plurality of optical fiber terminals arranged in parallel on one side surface, and passes through the optical fiber. A through hole and a support piece having a plurality of slits are formed, the plurality of slits are stored in the storage container so as to face each of the through holes, and the through hole can be locked to the optical fiber terminal And a gripping portion configured to grip the optical fiber to be inserted through the slit by the slit.

  Thus, a plurality of optical fiber terminals arranged in parallel on one side surface of the storage container of the optical fiber splitter, a plurality of through holes formed adjacent to the optical fiber terminals on the one side surface, and through which the optical fiber is inserted An optical fiber which is formed of a support piece having a slit, is accommodated in the storage container with the plurality of slits facing each of the through holes, and is inserted into the through holes in a state where it can be locked to the optical fiber terminal And a through hole disposed on the same side surface as the optical fiber terminal passes through the optical fiber, and the optical fiber is held by the grip within the container. As a result, the optical fiber can be expanded freely while the expansion of the optical fiber terminal requiring space is not required.

  The optical fiber splitter according to the present invention is provided with a locking portion on the back side of the slit of the grip portion, and the locking portion engages with the optical fiber terminal. As described above, since the locking portion is provided on the back side of the slit of the grip portion and the locking portion engages with the optical fiber terminal, the locking portion is disposed in the optical fiber splitter. By holding the optical fiber terminal as it is, the grip portion can be securely and firmly fixed without adding a separate fixing tool.

  In the optical fiber splitter according to the present invention, the locking portion is constituted by a protrusion. As described above, since the locking portion is composed of a protrusion, the protrusion fits or abuts in the space between the optical fiber terminals, and the optical fiber terminals are firmly locked. Thus, the grip portion can be stably and firmly fixed.

  In the optical fiber splitter according to the present invention, the protrusion has a tapered shape. As described above, since the protrusion has a tapered shape, the protrusion fits or abuts in the space between the optical fiber terminals, and after the optical fiber terminal is locked, the taper of the protrusion is Depending on the shape, the force to press the both side surfaces of the optical fiber terminal inward acts, the optical fiber terminal is firmly locked, and the grip can be stably and firmly fixed. .

  In the optical fiber splitter according to the present invention, both end surfaces of the grip portion abut on at least one of the side surface of the optical fiber terminal, the side surface of the storage container, and the components disposed inside the storage container. Fixed. As described above, both end surfaces of the grip portion are in contact with and fixed to at least one of the side surface of the optical fiber terminal, the side surface of the storage container, and the components disposed inside the storage container. A force for pressing the end face of the grip inward acts while diverting the component constituting the optical fiber branching device as it is, and the grip can be fixed stably and firmly.

  In the optical fiber splitter according to the present invention, the slit of the grip portion has a straight pipe shape in communication with the notch portion having a width narrower than the outer diameter of the optical fiber and the notch portion to accommodate the optical fiber And a housing portion. As described above, when the optical fiber is inserted into the slit, the optical fiber passes through the notch while temporarily widening the width of the notch, and after passing through the notch, the optical fiber passes through the notch. Since the width is restored to the original narrow width and is accommodated in the accommodating portion having a straight pipe shape which is substantially the same shape as the diameter cross section of the optical fiber, after the optical fiber is once accommodated in the accommodating portion Thus, the optical fiber can be stably and firmly housed and fixed.

  In the optical fiber splitter according to the present invention, the inner diameter of the housing portion is smaller than the outer diameter of the optical fiber. As described above, since the inner diameter of the housing portion is smaller than the outer diameter of the optical fiber, the optical fiber receives an inward pressing force from the housing portion after being housed in the housing portion. It becomes difficult to remove from the slit, and the optical fiber can be accommodated and fixed stably and firmly.

The perspective view showing the composition of the optical fiber branching device concerning a 1st embodiment of the present invention is shown. The perspective view showing the structure of the optical fiber splitter which concerns on the 2nd Embodiment of this invention is shown. The six figure showing the composition of the optical fiber branching machine concerning a 2nd embodiment of the present invention is shown. Sectional drawing (a) and perspective view (b) showing the structure of the optical fiber splitter which concerns on the 3rd Embodiment of this invention are shown. The cross section showing the composition of the optical fiber branching device concerning a 4th embodiment of the present invention is shown. The sectional view from the upper surface showing the composition of the optical fiber branching device concerning the 5th embodiment of the present invention (a), the sectional view from the front (b), and the explanatory view (c) explaining penetration of an optical fiber are shown. . Sectional drawing (a) and perspective view (b) showing the structure of the optical fiber splitter which concerns on the 6th Embodiment of this invention are shown. The cross-sectional view (a) showing the structure of the optical fiber splitter which concerns on the 6th Embodiment of this invention, and explanatory drawing (b) explaining penetration of an optical fiber are shown. An explanatory view (a) showing composition of an optical fiber branching device concerning a 7th embodiment of the present invention, and an explanatory view (b) explaining penetration of an optical fiber are shown.

First Embodiment
The optical fiber splitter according to the first embodiment of the present invention comprises, as shown in FIG. 1A, a plurality of optical fiber terminals 1 arranged in parallel on one side surface of a storage container 100 of the optical fiber splitter. A support hole 3a is formed adjacent to the optical fiber terminal 1 on one side and through which the optical fiber is inserted, and a support piece 3a having a plurality of slits 31. The plurality of slits 31 are formed in each of the through holes 2 And a gripping portion 3 configured to grip the optical fiber, which is inserted into the through hole 2 so as to be engaged with the optical fiber terminal 1 so as to be engaged with the optical fiber terminal 1. .

  The optical fiber terminal 1 has one or more optical fiber connection parts 11 and is connected to the optical fiber 200 through the optical fiber connection parts 11. Of course, in this optical fiber connection portion 11, one optical fiber connection portion 11 may be disposed per one optical fiber terminal 1, or a plurality of optical fiber connection portions 11 are disposed per one optical fiber terminal 1. You may

  The size of the through hole 2 is not particularly limited as long as the size allows insertion of the optical fiber. In addition, the arrangement position of the through hole 2 is not particularly limited as long as it is adjacent to the optical fiber terminal 1 on one side surface of the storage container 100 of the optical fiber splitter, for example, as shown in FIG. Can be disposed side by side with the optical fiber terminal 1. In addition to this, it can be disposed above the optical fiber terminal 1 and can also be disposed below the optical fiber terminal 1.

  The material of the grip portion 3 is not particularly limited, but it is preferable that at least the inside (notted inner surface) of the slit 31 be made of an elastic body, and more preferably, be made of an elastic body as a whole. It is. The insertion of the optical fiber can be facilitated by chamfering the optical fiber 200 of the slit 31.

  The elastic body is not particularly limited as long as it has elasticity, but, for example, a rubber elastic material or various foams can be used. By using such an elastic body, the optical fiber 200 can be smoothly inserted into the slit by its flexibility, and the optical fiber 200 after inserted into the slit can be firmly fixed by the elastic force. That is, the optical fiber 200 is held by the frictional force by coming into contact with the grip portion 3 made of an elastic resin such as rubber, and has an effect of alleviating the stress applied to the optical fiber 200 by the elastic deformation with respect to the force applied in the lateral direction. .

  The grip portion 3 acts so that pressure is applied when the optical fiber 200 is stored in the slit 31 when fixed in the apparatus, whereby the contact portion of the elastic portion and the optical fiber (contact Even when the area can not be sufficiently secured, the frictional force with the optical fiber 200 can be improved, and the necessary gripping force can be secured in a small space.

  As shown in FIG. 1 (b), the optical fiber branch according to the present embodiment allows the plurality of optical fibers 200 to be expanded extremely easily without increasing the housing size, as shown in FIG. 1 (b). It becomes. Further, as shown in FIG. 1C, the appearance of the optical fiber splitter according to the present embodiment has a plurality of connection ports (that is, the optical fiber connection portion 11 and the through holes 2) through which the plurality of optical fibers 200 can be inserted. It becomes an extremely simple device configuration that is only disposed.

  Thus, in the optical fiber branch according to the present embodiment, a plurality of optical fiber terminals 1 arranged in parallel on one side of the storage container 100 of the optical fiber branch and the optical fiber terminals 1 on this one side are adjacent The plurality of slits 31 are formed in the storage container 100 so as to face the respective through holes 2 and formed in the through hole 2 through which the optical fiber is inserted and the support piece 3 a having the plurality of slits 31. Since the optical fiber inserted into the through hole 2 in a state capable of being locked to the optical fiber terminal 1 is gripped by the slit 31, the optical fiber terminal 1 is disposed on the same side as the optical fiber terminal 1 The through hole 2 passes through the optical fiber, and the optical fiber is securely fixed by the holding portion 3 in the storage container 100, and a space is required when adding the optical fiber. While eliminating the need for additional optical fiber terminal 1, without increasing the enclosure size, expansion of the optical fiber is flexibly.

  As described above, the optical fiber splitter according to the present embodiment can easily fix the optical fiber 200 without applying an undue force only by inserting the optical fiber 200 into the grip portion 3. That is, compared to the case where the optical fiber 200 is fixed with an adhesive or the like, it is possible to ensure stable quality with less variation due to work.

Second Embodiment
The optical fiber splitter according to the second embodiment of the present invention includes the optical fiber terminal 1, the through hole 2, and the grip portion 3 as in the first embodiment described above, and further, As shown in FIG. 2A, a locking portion 4 is provided on the back side of the slit 31 of the grip portion 3, and the locking portion 4 is engaged with the optical fiber terminal 1.

  The locking portion 4 is not particularly limited as long as the locking portion 4 can be engaged with the optical fiber terminal 1, and for example, a structure in which a concavo-convex portion is provided and fitted to the optical fiber terminal 1 can be used. The optical fiber terminal 1 can also be bonded using a chemical material such as a material or an adhesive material.

  As shown in FIG. 2 (b), the optical fiber branch according to the present embodiment allows the optical fiber splitter to be able to add a plurality of optical fibers 200 extremely easily without increasing the size of the housing as shown in FIG. 2 (b). It becomes. Further, as shown in FIG. 2C, the appearance of the optical fiber splitter according to the present embodiment includes a plurality of connection ports (that is, the optical fiber connection portion 11 and the through holes 2) through which the plurality of optical fibers 200 can be inserted. It becomes an extremely simple device configuration that is only disposed.

  Thus, since the optical fiber splitter according to the present embodiment can be configured with a very compact device configuration, for example, as shown in the six views of FIG. It is possible to add a plurality of optical fibers 200 while maintaining it.

  As described above, since the locking portion 4 is provided on the back side of the slit 31 of the grip portion 3 and the locking portion 4 engages with the optical fiber terminal 1, the locking portion 4 is an optical fiber By holding the optical fiber terminal 1 disposed in the branching device as it is, the grip portion 3 can be securely and firmly fixed without adding a separate fixing tool.

Third Embodiment
In the optical fiber splitter according to the third embodiment of the present invention, as in the second embodiment, the optical fiber terminal 1, the through hole 2, the grip portion 3, and the locking portion 4 and, further, as shown in FIG. 4A, the locking portion 4 is configured by the projection 41.

  The material of the protrusion 41 is not particularly limited, but may be, for example, an elastic body, and it is more preferable that both of the grips 3 be elastic. It can be configured integrally, and can be integrally molded in the manufacturing aspect, which is advantageous also from the viewpoint of the manufacturing cost. The elastic body is not particularly limited as long as it has elasticity, but, for example, a rubber elastic material or various foams can be used. By using such an elastic body, the optical fiber terminal 1 can be smoothly locked due to its flexibility, and the optical fiber terminal 1 after fixing can be firmly fixed by its elastic force.

  The shape of the protrusion 41 is not particularly limited as long as it has a protrusion shape, and can be, for example, a rectangular shape. In addition to such angular shapes, shapes having curved surfaces are also possible.

  The optical fiber splitter according to the present embodiment stably and firmly holds the optical fiber terminal 1 by the projection 41 without increasing the housing size as shown in FIG. 4 (b). be able to.

  As described above, in the optical fiber branching device according to the present embodiment, since the locking portion 4 is formed of the protrusion 41, the protrusion 41 is fitted or not in the space between the optical fiber terminals 1. At the same time, the optical fiber terminal 1 is firmly locked, and the grip portion 3 can be stably and firmly fixed.

Fourth Embodiment
In the optical fiber splitter according to the fourth embodiment of the present invention, as in the third embodiment, the optical fiber terminal 1, the through hole 2, the grip portion 3, and the locking portion 4 and, further, as shown in FIG. 5A, the projection 41 has a tapered shape.

  The tapered shape of the projection 41 is not particularly limited, but in the case where the optical fiber terminal 1 which is the locking object of the locking portion 4 is a rectangular solid, as shown in FIG. It is preferable that it is a taper shape which expands as it leaves | separates from the back side of the slit 31 of the part 3. As shown in FIG.

  As described above, since the projection 41 has a tapered shape, as shown in FIG. 5B, the projection 41 fits or abuts on the space between the optical fiber terminals 1 and the optical fiber After the terminal 1 is locked, the tapered shape of the projection 41 causes a force A to press the both side surfaces of the optical fiber terminal 1 inward as shown in FIG. The optical fiber terminal 1 is firmly locked to the grip portion 3 so that the grip portion 3 can be stably and firmly fixed.

Fifth Embodiment
The optical fiber splitter according to the fifth embodiment of the present invention has the optical fiber terminal 1, the through hole 2, the grip portion 3, and the locking portion as in the fourth embodiment. 4 and, as shown in FIG. 6 (a), both end surfaces 32 of the grip 3 are side surfaces 1b of the optical fiber terminal 1 (also shown in FIG. 1 (a) described above), It is configured to be in contact with and fixed to at least one of the side surface 101 of the storage container 100 and the component 300 disposed inside the storage container 100.

  Preferably, both end surfaces 32 of the grip 3 correspond to two of the side surface 1 b of the optical fiber terminal 1, the side surface 101 of the storage container 100, and the component 300 disposed inside the storage container 100. It is the structure fixed in contact. For example, both end surfaces 32 of the grip portion 3 may be configured to be held in contact with the side surface 101 of the storage container 100 and the component 300 disposed inside the storage container 100, respectively. It is pressed firmly from both sides and fixed stably. In addition, as shown in FIG. 1 of the first embodiment, the through holes 2 are arranged side by side on the same side as the plurality of optical fiber terminals 1 arranged in parallel on one side of the storage container of the optical fiber branching device. When installed, it is possible to abut on the side surface 1 b of the optical fiber terminal 1 and fix it.

  As described above, both end surfaces 32 of the grip 3 are at least one of the side surface 1 b of the optical fiber terminal 1, the side surface 101 of the storage container 100, and the component 300 disposed inside the storage container 100. As shown in FIG. 6 (b), the component 300 of the optical fiber splitter is used as it is, since it is fixed in contact with the optical fiber splitter without adding any additional members. A force B and / or a force C for pressing the end face 32 inward acts, and the grip 3 can be stably and firmly fixed.

  In particular, as shown in FIG. 6C, at the same time the optical fiber 200 is inserted into the inside of the slit 31, the force B and / or the force C acts to press the slit 31 from the left and right. The optical fiber 200 inserted into the inside acts as being confined in the back of the slit 31, and insertion and fixation of the optical fiber 200 by the slit 31 can be promoted.

Sixth Embodiment
The optical fiber splitter according to the sixth embodiment of the present invention has the optical fiber terminal 1, the through hole 2, the grip portion 3, and the locking portion as in the fifth embodiment. 4 and, as shown in FIG. 7A, the slit 31 of the grip 3 communicates with the notch 31b having a width smaller than the outer diameter of the optical fiber, and the notch 31b. And a straight pipe-shaped housing portion 31a for housing the optical fiber.

  In the optical fiber splitter according to the present embodiment, as shown in FIG. 7B, when the optical fiber is inserted into the slit 31, the optical fiber temporarily widens the width of the notch 31b. After passing through the notch 31b and passing through the notch 31b, the width of the notch 31b is restored to the original narrow width, and a straight pipe having a shape substantially the same as the diameter cross section of the optical fiber Since the optical fiber is housed in the housing portion 31a, once the optical fiber is once housed in the housing portion 31a, it becomes difficult to come out of the slit 31, and the optical fiber can be housed and fixed stably and firmly. it can.

  Furthermore, in the case where the configuration of the fifth embodiment is applied, the force B and / or the force C for pressing the end face 32 of the grip portion 3 inward acts, as shown in FIG. As shown in), the slit 31 is applied with a force E derived from the force B and / or the force C from both sides thereof, and this force E acts to press from the left and right of the slit 31, The optical fiber 200 inserted into the inner portion 31 acts to be confined in the back of the slit 31, and insertion and fixation of the optical fiber 200 by the slit 31 can be promoted.

Seventh Embodiment
The optical fiber splitter according to the seventh embodiment of the present invention has the optical fiber terminal 1, the through hole 2, the grip portion 3, and the locking portion as in the sixth embodiment. And, as shown in FIG. 9A, the inner diameter of the housing portion 31a is smaller than the outer diameter of the optical fiber.

  As described above, in the optical fiber splitter according to the present embodiment, since the inner diameter of the housing portion 31a is smaller than the outer diameter of the optical fiber, the optical fiber is temporarily stored in the housing portion 31a. As shown in FIG. 9 (b), the pressing force F directed inward from the housing portion 31a makes it difficult to detach from the slit 31, and the optical fiber can be housed and fixed stably and firmly. .

REFERENCE SIGNS LIST 1 optical fiber terminal 1 b side surface 11 optical fiber connection portion 2 through hole 3 grip portion 3 a support piece 31 slit 31 a accommodation portion 31 b cutout portion 32 end surface 4 locking portion 41 protrusion portion 100 storage container 101 side surface 200 optical fiber 300 parts

Claims (7)

A plurality of optical fiber terminals provided in parallel on one side surface of the storage container of the optical fiber branching device;
A through hole formed adjacent to the optical fiber terminal on the one side and through which the optical fiber is inserted;
A support piece having a plurality of slits is formed, and the plurality of slits are stored in the storage container so as to face each of the through holes, and are inserted into the through holes in a state of being able to be locked to the optical fiber terminal A gripping portion that grips an optical fiber with the slit;
An optical fiber splitter characterized by comprising. In the optical fiber splitter according to claim 1,
A locking portion is provided on the back side of the slit of the holding portion, and the locking portion engages with the optical fiber terminal. In the optical fiber splitter according to claim 2,
An optical fiber splitter characterized in that the locking portion is composed of a protrusion. In the optical fiber splitter according to claim 3,
An optical fiber splitter characterized in that the protrusion has a tapered shape. The optical fiber splitter according to any one of claims 1 to 4.
Both end surfaces of the grip portion are in contact with and fixed to at least one of a side surface of the optical fiber terminal, a side surface of the storage container, and a component disposed inside the storage container. Fiber branch. The optical fiber splitter according to any one of claims 1 to 5.
A notch having a width smaller than the outer diameter of the optical fiber, and a straight pipe-shaped accommodating portion communicating with the notch to accommodate the optical fiber;
An optical fiber splitter characterized by comprising. In the optical fiber splitter according to claim 6,
The inner diameter of the said accommodating part is smaller than the outer diameter of the said optical fiber, The optical fiber branching device characterized by the above-mentioned.

Images