JP6603344B2 - Branch member - Google Patents

Description

  The present disclosure relates to a branch member.

  For example, a plurality of optical fibers extending from an optical fiber cable (hereinafter also referred to as an optical cable) are connected to a terminal device or the like to be connected. Since such an optical cable contains a large number of optical fibers, for example, an optical cable may be laid down to a building where terminal equipment is installed, and the optical fiber may be branched from the optical cable in the building.

  2. Description of the Related Art As a branching member that branches a plurality of optical fibers from an optical cable, one having an inlet for taking in an end portion of the optical cable and an outlet for taking out the optical fiber branched from the optical cable is known (for example, see Patent Document 1). )

US Patent Application Publication No. 2015/0295394

  When fixing an optical fiber, a protective tube for protecting the optical fiber may be inserted into the recess to grip the protective tube. However, if a plurality of protective tubes are inserted into the same concave portion, the gripping force of the upper protective tube may be weakened due to the widened concave portion.

  An object of the present invention is to maintain gripping force when a plurality of protective tubes are inserted into the recesses.

A main invention for achieving the above object includes: a first fixing portion for fixing an end portion of an optical cable; and a second fixing portion for fixing a protective tube for protecting an optical fiber branched from the optical cable. The two fixing portions include a gripping plate that grips the protective tubes arranged in a plurality of stages, and a plate storage portion that stores the gripping plate, and the gripping plate includes a plurality of protrusions. When the plurality of protective tubes are inserted in the recess, the protruding portions grip the protective tubes at each stage, and the gripping plates are aligned in the longitudinal direction of the protective tubes. is composed of a plurality of plates, the protruding portions for gripping the protective tube of each stage is respectively formed by a plate, the plate accommodating section Consists of a slit-like groove, the plurality of plates constituting the gripping plates, characterized in that the state of superimposed longitudinally are accommodated in the same said groove of the plate accommodating section Is a branching member.

  Other characteristics of the present invention will be made clear by the description and drawings described later.

  According to the present invention, the gripping force can be maintained when a plurality of protective tubes are inserted into the recesses.

FIG. 1A is a perspective view of the branching member 1, and FIG. 1B is a perspective view of the branching member 1 with the lid portion 4 removed. 2 is an exploded perspective view of a branch member 1. FIG. 4 is a perspective view of a second fixing portion 30. FIG. 4A is a side view of the second fixing portion 30, and FIG. 4B is a view of the portion indicated by the arrow in FIG. 4A as viewed from above. FIG. 6 is an explanatory diagram of three plates of the gripping plate 32 (upper gripping plate 321, middle gripping plate 322, and lower gripping plate 323). It is explanatory drawing of a structure of the plate accommodating part. FIG. 3 is a perspective view of a first fixing unit 10. FIG. 8A is a diagram illustrating a positional relationship between the first fixing unit 10 and the optical cable 50 (thick / thin) according to the present embodiment, and FIG. 8B illustrates a fixing unit 10 ′ and an optical cable 50 (thick / thin) according to a comparative example. FIG. It is a figure which shows the mode at the time of injection | pouring of an adhesive agent. FIG. 10A is a cross-sectional view of the lid portion 4, and FIG. 10B is a cross-sectional view of the lid portion 4 when the adhesive is injected. It is explanatory drawing of the shape of 42 A of insertion parts of the injection port 41 and the cap. 2 is a cross-sectional view of an optical cable 50. FIG. 2 is a front view of a rack 110. FIG.

  At least the following matters will be apparent from the description and drawings described below.

A first fixing portion for fixing an end portion of the optical cable; and a second fixing portion for fixing a protective tube for protecting the optical fiber branched from the optical cable, wherein the second fixing portion is arranged in a plurality of stages. A holding plate for holding the protective tube, and the holding plate is formed with a recess having a plurality of protrusions; when the plurality of protection tubes are inserted side by side into the recess, the protrusions Each holding the protection tube at each stage, and the gripping plate is composed of a plurality of plates arranged in the longitudinal direction of the protection tube, and the projecting portion that holds the protection tube at each stage, The branching members are characterized by being formed on separate plates.
According to such a branch member, even when a plurality of protective tubes are inserted into the recesses, the recesses can be prevented from opening, and the gripping force can be maintained.

  The holding plate has a plurality of recesses formed in the longitudinal direction and in a direction perpendicular to the direction in which the protective tubes of each stage are arranged, and the second fixing portion corresponds to the plurality of recesses. And a plurality of partition walls for partitioning the gripping portion of the protective tube, each of the partition walls being provided with a plate storage section for storing the gripping plate, and the position of the plate storage section in the longitudinal direction. However, it is desirable that the partition wall be different. Thereby, a thin gripping plate can be accommodated stably.

  The first fixing portion includes a V-shaped cable receiving portion, a plate mounting portion provided in the cable receiving portion, and a serrated plate accommodated in the plate mounting portion, from the cable receiving portion. It is desirable that the saw blades of the serrated plate protrude. Thereby, cables with different diameters can be reliably fixed.

  A main body provided with the first fixing portion and the second fixing portion; and a lid that covers the main body portion, wherein the main body portion is between the first fixing portion and the second fixing portion. A housing portion for housing an optical fiber branched from the optical cable, wherein the lid portion is provided at the inlet for injecting an adhesive into the housing portion; It is desirable to have a check valve that only allows the adhesive to flow into. Thereby, the backflow of the adhesive agent with which the accommodating part was filled can be suppressed, and the leakage of an adhesive agent can be suppressed.

  It is preferable that a cap having an insertion portion to be inserted into the inlet is provided, the inlet is polygonal, and the insertion portion of the cap is circular in cross section. Thereby, when a cap is attached, a gap is formed between the injection port and the insertion portion, so that the internal pressure is not increased and the cap is difficult to be removed. Moreover, since there are few contact parts, it is easy to put in a cap.

  The lid is preferably translucent or transparent. Thereby, the filling amount of the adhesive to the accommodating part can be confirmed.

=== Embodiment ===
<Overall configuration>
FIG. 13 is a front view of the rack 110.

  A terminal processing structure 100 shown in FIG. 13 includes a rack 110, terminal equipment 120, a branch member 1, an optical cable 50, and a protective tube 60.

  The rack 110 is a member on which the terminal device 120 or the like is placed, and includes a frame 130 constituting a frame and a plate-like plate member 140 attached to the frame 130.

  The terminal device 120 includes an optical module 121.

  The optical module 121 is a member arranged on the left and right of the terminal device 120 and is a member for mutually converting an electric signal and an optical signal. The optical module 121 includes an adapter 122. The adapter 122 is a member lined up and down on the front surface of the optical module 121, and is a connection port for connecting an optical connector attached to an optical fiber.

  The branch member 1 is provided in the path of the optical cable 50 and is fixed to the plate member 140. The branch member 1 is a member that branches a plurality of optical fiber units 51 from the optical cable 50. Details of the branch member 1 will be described later.

  The optical cable 50 is a cable used in optical communication, and a plurality of optical fiber units 51 (a plurality of optical fibers 52) are accommodated therein (described later).

  The protective tube 60 is a tubular member (tube) that protects the optical fiber unit 51 in the wiring path from the branch member 1 to the terminal device 120.

  FIG. 12 is a cross-sectional view of the optical cable 50.

  As shown in the figure, the optical cable 50 has a circular cross section, and includes a plurality of optical fiber units 51, a press-wound tape 54, a jacket 55, and a tensile body 56.

  The optical fiber unit 51 includes an optical fiber 52 and a bundle material 53.

  The optical fiber 52 is a linear member for transmitting an optical signal, and is used as a transmission path for optical communication. One optical fiber unit 51 includes a plurality of optical fibers 52.

  The bundle material 53 is a member that bundles a plurality of optical fibers 52 and is a string-like or belt-like member. The bundle material 53 is wound around the bundle of optical fibers 52 (a plurality of optical fibers 52) in a spiral or SZ shape.

  The presser winding tape 54 is a member that bundles a plurality of optical fiber units 51 and covers the plurality of optical fiber units 51. As a result, the molten resin constituting the jacket 55 is separated from the optical fiber unit 51.

  The outer jacket 55 is a member that covers the outside of the presser winding tape 54 (in other words, the plurality of optical fiber units 51), and is formed of a molten resin in the present embodiment.

  The strength member 56 is embedded in the jacket 55 and is disposed along the extending direction (longitudinal direction) of the optical fiber 52. A pair of strength members 56 is provided so as to sandwich a plurality of optical fiber units 51 bundled with a presser winding tape 54. The outer jacket 55 may be provided with other members (parts) such as a tear string (reference numeral 57 in the figure) and a projection (reference numeral 58 in the figure) indicating the position of the tear string.

<Configuration of branch member 1>
FIG. 1A is a perspective view of the branch member 1. FIG. 1B is a perspective view of the branch member 1 with the lid 4 removed. FIG. 2 is an exploded perspective view of the branch member 1. In FIG. 1B, illustration of a plurality of optical fiber units 51 branched from the optical cable 50 is omitted.

  In the following description, each direction is defined as shown in FIG. 1A. That is, the width direction of the branch member 1 is the X direction, the direction in which the three (three-stage) protection tubes 60 are arranged is the Y direction, and the longitudinal direction (optical axis direction) of the optical cable 50 is the Z direction.

  As described above, the branch member 1 is a member that branches the plurality of optical fiber units 51 from the optical cable 50. In other words, the branch member 1 is a member that holds a branch portion between the optical cable 50 and the plurality of optical fiber units 51 branched from the optical cable 50. The branch member 1 of this embodiment includes a main body 2 and a lid 4.

  The main body 2 includes a first fixing part 10, a housing part 20, and a second fixing part 30.

  The first fixing part 10 is a part for fixing the end of the optical cable 50. Details of the first fixing unit 10 will be described later.

  The accommodating part 20 is provided between the first fixing part 10 and the second fixing part 30, and is a part that accommodates the branch part (a plurality of optical fiber units 51) of the optical cable 50. Moreover, the accommodating part 20 is also a filling part with which an adhesive (not shown) is filled. Note that the adhesive is injected to fix the plurality of optical fiber units 51 accommodated in the accommodating portion 20. The adhesive is, for example, a resin-based elastic adhesive, and is liquid when filled and solidifies with time.

  The second fixing unit 30 holds (fixes) the protective tube 60 inserted through the optical fiber unit 51. Here, a total of 12 protection tubes 60 are gripped in three rows and one row in the Y direction and in four rows in the X direction. However, the number of protection tubes 60 in one row and the number of rows arranged in the width direction (X direction) are not limited to this.

  The second fixing part 30 includes a stopper 31, a gripping plate 32, a partition part 33, a stopper accommodating part 34, and a plate accommodating part 35.

  The stopper 31 is a member for preventing leakage of the adhesive, and is a plate-like member parallel to the XY plane. The stopper 31 of this embodiment is formed of a flexible sponge. The stopper 31 includes a cut portion 31A and an insertion hole 31B.

  The cut portion 31A is a slit formed in the stopper 31 along the Y direction. In the stopper 31, four cut portions 31A are arranged in the X direction. The protective tube 60 is inserted into the cut portion 31A. In the present embodiment, three protective tubes 60 are inserted into one notch 31A.

  The insertion hole 31B is a hole through which the protection tube 60 is inserted, and holds the protection tube 60 inserted into the cut portion 31A in a predetermined position. In the present embodiment, since three protective tubes are arranged in the Y direction (arranged in three stages), three insertion holes are formed in one cut portion 31A.

  The gripping plate 32 is a member that suppresses the displacement of the protective tube 60 by gripping the protective tube 60. The gripping plate 32 of the present embodiment is a comb-like metal plate, and four concave portions 32A are arranged in the X direction. In addition, the protective tubes 60 can be arranged in three stages in each recess 32A. When the protective tube 60 is inserted into the concave portion 32 </ b> A, the protruding portion of the concave portion 32 </ b> A bites into the protective tube 60. Thereby, the protection tube 60 can be grasped and positional deviation can be suppressed. In the present embodiment, the gripping plate 32 is composed of three plates (described later).

  The partition portion 33 (partition wall portion) is a wall-shaped portion that partitions the grip portion of the protection tube 60 in the X direction, and is formed corresponding to the concave portion 32 </ b> A of the grip plate 32.

  The stopper accommodating portion 34 is a portion that accommodates the stopper 31, and is provided at an end portion of the second fixed portion 30 on the side close to the accommodating portion 20.

  The plate accommodating portion 35 is a portion that accommodates the gripping plate 32 and is configured by a slit-like groove of the partition portion 33 (described later).

  The lid 4 is made of a translucent member. Thereby, the filling amount of the adhesive agent in the housing part 20 of the main body part 2 can be confirmed. In addition, although the cover part 4 of this embodiment is translucent, it is not restricted to this, You may be transparent. The lid 4 is provided with a scale (scale 4A and scale 4B) that serves as a mark for the amount of the adhesive filled. The scale 4A is when the branch member 1 (the main body portion 2 and the lid portion 4) is arranged as shown in FIG. 9 (that is, when the first fixing portion 10 is arranged vertically above and the second fixing portion 30 is arranged vertically below). ). The scale 4B is a scale when the branch member 1 is arranged upside down with respect to FIG.

  The lid 4 is a member that covers the main body 2, and includes an inlet 41 and a cap 42. As will be described later, the lid 4 includes a check valve 43, a screw 44, and a guide pin 45 (see FIG. 10).

<Configuration of Second Fixing Unit 30>
FIG. 3 is a perspective view of the second fixing portion 30. 4A is a side view of the second fixing portion 30, and FIG. 4B is a view of the portion indicated by the arrow in FIG. 4A as viewed from above. FIG. 5 is an explanatory diagram of three plates of the gripping plate 32 (upper gripping plate 321, middle gripping plate 322, and lower gripping plate 323). FIG. 6 is an explanatory diagram of the configuration of the plate housing portion 35. Here, in the Y direction, the bottom side of the recess 32A (the side in the insertion direction of the protective tube 60) is “lower”, and the opposite side is “upper”.

  As described above, the second fixing portion 30 includes the gripping plate 32 that grips the protective tubes 60 arranged in three stages in the Y direction (up and down). The gripping plate 32 is formed with a plurality of recesses 32A (four in the present embodiment) arranged in the X direction. Each recess 32A has three protrusions (an upper protrusion 321T, an intermediate protrusion 322T, and a lower protrusion 323T) protruding inward. As shown in FIG. 4A, when the three protective tubes 60 are inserted side by side into the recess 32A, each protrusion (upper protrusion 321T, intermediate protrusion 322T, lower protrusion 323T) corresponds to each. The protective tube 60 is gripped.

  In this embodiment, as shown in FIG. 4B, the gripping plate 32 includes three plates (an upper gripping plate 321, a middle gripping plate 322, and a lower grip) arranged in the Z direction (longitudinal direction of the protective tube 60). It is composed of a gripping plate 323).

  As shown in FIG. 5, the upper gripping plate 321 has an upper protrusion 321T and a protrusion 321K.

  The upper protrusion 321T protrudes inward at a position corresponding to the upper one of the upper and lower protective tubes 60 inserted into the recess 32A (that is, the protective tube 60 inserted last).

  The protrusion 321 </ b> K is a barb protruding outward at the upper end of the upper gripping plate 321.

  As shown in FIG. 5, the middle gripping plate 322 has a middle protrusion 322T and a protrusion 322K.

  The middle protrusion 322T is provided below the formation position of the upper protrusion 321T of the upper gripping plate 321. More specifically, the middle protrusion 322T is located on the inner side at a position corresponding to the middle one of the upper and lower protection tubes 60 inserted into the recess 32A (that is, the protection tube 60 inserted second). It protrudes.

  The protrusion 322K is a barb protruding outward at the upper end of the middle gripping plate 322.

  As shown in FIG. 5, the lower gripping plate 323 has a lower protrusion 323T and a protrusion 323K.

  The lower protrusion 323T is provided on the lower side of the formation position of the intermediate protrusion 322T of the intermediate gripping plate 322. More specifically, the lower protrusion 323T protrudes inward at a position corresponding to the lower one of the upper and lower protective tubes 60 inserted into the recess 32A (that is, the protective tube 60 inserted first). ing.

  The protrusion 322K is a barb protruding outward at the upper end of the middle gripping plate 322.

  When the above three plates are arranged side by side in the Z direction, as shown in FIGS. 3 and 4A, the upper protrusion 321T, the middle protrusion 322T, and the lower protrusion 323T are vertically moved in the recess 32A. They are shifted. When the three protective tubes 60 are inserted side by side into the recess 32A, the lower protective tube 60 is held by the lower protruding portion 323T (lower holding plate 323), and the intermediate protective tube 60 is moved by the intermediate protruding portion 322T. The upper protection tube 60 is gripped by the (middle gripping plate 322), and is gripped by the upper protrusion 321T (upper gripping plate 321).

  If the gripping plate 32 is composed of a single plate and three protrusions with different vertical positions are provided in the concave portion of the single plate, the concave portions are expanded by inserting a plurality of protective tubes 60. As a result, the gripping force of the upper protective tube 60 may be weakened.

  On the other hand, in the present embodiment, the protruding portions for gripping the protection tubes 60 at the respective stages are formed on different plates (upper gripping plate 321, middle gripping plate 322, lower gripping plate 323). The gripping force can be maintained even when the three protective tubes 60 are inserted into the recess 32A.

  When the three plates are stacked, the protrusion 321K, the protrusion 322K, and the protrusion 323K overlap. With the protrusions (protrusions 321K, 322K, and 323K), it is possible to make it difficult for each plate of the gripping plate 32 to be removed from the plate housing portion 35.

  The three plates (upper gripping plate 321, middle gripping plate 322, and lower gripping plate 323) constituting the gripping plate 32 of the present embodiment each have a thickness of about 0.5 mm. Even if they are stacked, they are very thin.

  On the other hand, the plate accommodating portion 35 that accommodates the gripping plate 32 is configured by a slit-like groove provided in the partition portion 33 arranged in the X direction, and is formed by die molding. As described above, since the gripping plate 32 is thin, it is difficult to mold the plate accommodating portion 35 (slit) in the partition portion 33 so as to correspond to the thickness. If the plate accommodating portion 35 is formed wide, the gripping plate 32 may be rattled.

  Therefore, in the present embodiment, as shown in FIG. 6, the formation position (position in the Z direction) of the plate accommodating portion 35 in each partition portion 33 is shifted. That is, the position of the plate accommodating portion 35 of each partition portion 33 is different in the Z direction.

  For example, when the interval d (interval in the Z direction) of the broken line in FIG. 6 is the minimum interval of the slits that can be formed by die molding, the formation position (slit position) of the plate accommodating portion 35 of the partition portion 33 is shifted. The gripping plate 32 (three plates) can be accommodated and held in a range narrower than the distance d. That is, the gripping plate 32 that is thinner than the groove of the plate accommodating portion 35 can be stably accommodated.

<Configuration of the first fixing unit 10>
FIG. 7 is a perspective view of the first fixing portion 10. Hereinafter, the structure of the 1st fixing | fixed part 10 is demonstrated, referring FIG.7 and FIG.2.

  The first fixing portion 10 includes a receiving portion 11 (corresponding to a cable receiving portion), a sawtooth plate 12 (corresponding to a sawtooth plate), a gripping member 13, a stopper 14, and a stopper accommodating portion 15.

  The receiving part 11 is a part for fixing the optical cable 50 and is formed in a V-groove shape. Further, the receiving portion 11 is provided with a plate housing portion 11A (corresponding to a plate mounting portion).

  The plate accommodating portion 11 </ b> A is a slit formed in the receiving portion 11 for accommodating the sawtooth plate 12. In the present embodiment, as shown in FIG. 7, three plate accommodating portions 11A are provided at intervals in the Z direction. The saw-tooth plate 12 is accommodated in each of the three plate accommodating portions 11A.

  The sawtooth plate 12 is a metal plate that can be attached to and detached from the plate accommodating portion 11 </ b> A of the receiving portion 11. The saw-tooth plate 12 has a V-groove-shaped recess 12A and a saw-tooth 12B protruding from the recess 12A.

  The cross-sectional shape of the recess 12A is substantially the same as the cross-sectional shape of the receiving portion 11 (V-groove shape), and when the sawtooth plate 12 is accommodated in the plate accommodating portion 11A of the receiving portion 11, the sawtooth 12B is formed as shown in FIG. It protrudes from the receiving part 11.

  The saw-tooth 12B is a part that bites into the jacket 55 of the optical cable 50 in order to fix the optical cable 50. In addition, although the sawtooth 12B may be integrally molded with the receiving portion 11 (integral molding with resin), in that case, the teeth may be rounded and the gripping force of the optical cable 50 may be reduced. In the present embodiment, a metal plate is used as the sawtooth plate 12 and the sawtooth 12B is made of metal, so that the teeth are not easily rounded. Therefore, a decrease in the gripping force of the optical cable 50 can be suppressed.

  In this embodiment, as shown in FIGS. 2 and 7, the first fixed portion 10 is provided with three sawtooth plates 12 (three plate housing portions 11 </ b> A). The number of accommodating portions 11A) is not limited to this.

  The gripping member 13 is a member for gripping the optical cable 50 with the receiving portion 11. The gripping member 13 is attached to the main body 2 (first fixing portion 10) with a screw 13A.

  The stopper 14 is a member that prevents leakage of the adhesive, and is a plate-like member that is parallel to the XY plane. The stopper 14 is formed of a flexible sponge like the stopper 31. The stopper 14 includes a cut portion 14A and an insertion hole 14B.

  The cut 14A is a slit formed in the stopper 14 along the Y direction. One notch 14A is formed in the stopper 14, and the optical cable 50 is inserted into the notch 14A.

  The insertion hole 14B is a hole through which the optical cable 50 is inserted, and is formed at the end of the cut portion 14A. The insertion hole 14B holds the optical cable 50 inserted into the cut portion 14A in a predetermined position.

  The stopper accommodating portion 15 is a portion that accommodates the stopper 14, and is provided at an end portion of the first fixed portion 10 on the side close to the accommodating portion 20.

  FIG. 8A is a diagram illustrating a positional relationship between the first fixing unit 10 and the optical cable 50 (thick / thin) according to the present embodiment, and FIG. 8B illustrates a fixing unit 10 ′ and an optical cable 50 (thick / thin) according to a comparative example. FIG. In FIGS. 8A and 8B, the thick optical cable 50 is indicated by a solid line, and the thin optical cable 50 is indicated by a broken line.

  The fixing portion 10 ′ of the comparative example has a receiving portion 11 ′ formed in an arc shape. For this reason, the inner surface of the receiving portion 11 ′ and the optical cable 50 are in contact at one point. For this reason, it is difficult to grip the thin optical cable 50 in the comparative example. That is, it is difficult to cope with optical cables having different diameters.

  On the other hand, in the 1st fixing | fixed part 10 of this embodiment, since the receiving part 11 is V-groove shape, even if the optical cable 50 becomes thin, the sawtooth 12B can be made to bite into the optical cable 50. As a result, the optical cable 50 can be supported at three points regardless of the diameter of the optical cable 50 (however, the gripping member 13 needs to be replaced). Thus, in this embodiment, it is possible to securely fix the optical cables 50 having different diameters to the first fixing portion 10.

<Cover 4>
FIG. 9 is a diagram illustrating a state when the adhesive is injected. In FIG. 9, the Z direction is the vertical direction, and the side with the optical cable 50 with respect to the branch member 1 is the vertical upper side, and the side with the protective tube 60 is the vertical lower side. The broken-line arrows in the figure indicate the spread of the adhesive injected into the accommodating portion 20. FIG. 10A is a cross-sectional view of the lid portion 4, and FIG. 10B is a cross-sectional view of the lid portion 4 when the adhesive is injected. Moreover, FIG. 11 is explanatory drawing of the shape of the insertion part 42A of the inlet 41 and the cap 42. FIG.

  The lid 4 includes an inlet 41, a cap 42, a check valve 43, a screw 44, a guide pin 45, and a screw hole 46.

  The injection port 41 is an opening for injecting the adhesive into the housing part 20, and is provided in the lid 4 at a position corresponding to the housing part 20 of the main body part 2. The injection port 41 is formed in a regular octagon (see FIG. 11).

  The cap 42 is a member that closes the injection port 41, and has an insertion portion 42 a that is inserted into the injection port 41. The insertion portion 42a has a cylindrical shape with a circular cross section.

  Thus, in this embodiment, the inlet 41 is a regular octagon, and the insertion part 42a of the cap 42 is circular in cross section. Therefore, when the cap 42 is attached to the injection port 41 (when the insertion portion 42a is inserted), a gap is formed between the injection port 41 and the insertion portion 42a as shown in FIG.

  If there is no gap (for example, when the shape of the insertion portion and the injection port is both circular), the internal pressure increases when the cap 42 is attached, and the cap 42 is likely to come off. Moreover, since there are many contact parts, it is difficult to insert the cap 42. On the other hand, in this embodiment, when the cap 42 is attached, a gap is generated between the injection port 41 and the insertion portion 42a. Therefore, the internal pressure does not increase and the cap 42 is difficult to come off. Moreover, since there are few contact parts, it is easy to put in the cap 42. FIG.

  In the present embodiment, the shape of the injection port 41 is a regular octagon. However, the shape is not limited to this, and any shape may be used as long as a contact portion and a gap are formed between the insertion portion 42a. For example, it may be a regular hexagon.

  The check valve 43 is a thin plate member that can be elastically deformed. As shown in FIG. 10A, the check valve 43 is in close contact with the back surface of the lid 4 and closes the injection port 41 from the inside. Then, the check valve 43 allows only the inflow of the adhesive from the outside of the lid portion 4 to the inside (accommodating portion 20 side).

  The check valve 43 is formed with a guide hole (not shown) and a screw hole (not shown) penetrating in the thickness direction.

  The screw 44 is screwed into the screw hole 46 of the lid portion 4 through the screw hole of the check valve 43. Thereby, the check valve 43 is fixed to the lid portion 4.

  The guide pin 45 is a rod-shaped member that protrudes inward from the back surface of the lid portion 4, and is inserted into the guide hole of the check valve 43 and penetrates the check valve 43.

  10A, when the tip of the adhesive injection member 200 is inserted into the injection port 41 and the check valve 43 is pressed, the check valve 43 is guided by the guide pin 45 as shown in FIG. 10B. Deforms (bends) inward. As a result, a gap is formed between the injection port 41 and the check valve 43, and the adhesive can be injected (filled) into the storage unit 20. When the injection member 200 is extracted, the check valve 43 returns to the state shown in FIG. 10A by the elastic force and closes the injection port 41. Thereby, the backflow of the adhesive agent filled in the accommodating part 20 can be suppressed, and the leakage of the adhesive agent can be suppressed.

<Summary>
According to the above-described embodiment, the branching member 1 has the first fixing portion 10 that fixes the end of the optical cable 50 and the second fixing that fixes the protective tube 60 that protects the optical fiber unit 51 branched from the optical cable 50. Part 30. The second fixing portion 30 includes a gripping plate 32 that grips the protective tubes 60 arranged in three stages in the Y direction. The gripping plate 32 includes three protrusions (upper protrusions 321T). , A recess 32A having a middle protrusion 322T and a lower protrusion 323T) is formed. Then, when the three protective tubes 60 are inserted side by side into the recess 32A, the three protruding portions grip the protective tubes 60 at each stage. Further, the gripping plate 32 of the present embodiment is composed of three plates (upper gripping plate 321, middle gripping plate 322, and lower gripping plate 323) arranged in the Z direction (longitudinal direction of the protective tube 60). The protrusions that hold the protection tube 60 at each stage are formed on separate plates.
As a result, the upper protection tube 60 is gripped by the upper gripping plate 321 (upper protrusion 321T), and the middle protection tube 60 is gripped by the middle gripping plate 322 (middle protrusion 322T). The protective tube 60 is gripped by the lower gripping plate 323 (lower projecting portion 323T). Therefore, even when the three protection tubes 60 are inserted into the recesses 32 </ b> A, the recesses 32 </ b> A can be prevented from opening, and the gripping force can be maintained for each protection tube 60.

  Further, according to the present embodiment, the holding plate 32 is formed with four concave portions 32A in the X direction, and the second fixing portion 30 holds the protective tube 60 corresponding to the four concave portions 32A. It has the some partition part 33 which partitions a part. Each partition portion 33 is provided with a plate storage portion 35 for storing the gripping plate 32, and the position of the plate storage portion 35 in the Z direction differs depending on the partition portion 33. Thereby, the gripping plate 32 that is thinner than the groove of the plate accommodating portion 35 can be stably accommodated.

  Further, according to the present embodiment, the first fixing portion 10 includes the V-shaped receiving portion 11, the plate accommodating portion 11A provided in the receiving portion 11, and the sawtooth plate 12 accommodated in the plate accommodating portion 11A. I have. And the sawtooth 12B of the sawtooth plate 12 protrudes from 11 A of plate accommodating parts. Accordingly, since the optical cable 50 can be supported at three points regardless of the diameter of the optical cable 50, the optical cables 50 having different diameters can be reliably fixed to the first fixing portion 10.

  Further, according to the present embodiment, the branch member 1 includes the main body portion 2 provided with the first fixing portion 10 and the second fixing portion 30 and the lid portion 4 that covers the main body portion 2. The main body 2 has an accommodating portion 20 that accommodates the optical fiber unit 51 branched from the optical cable 50 between the first fixing portion 10 and the second fixing portion 30. In addition, the lid 4 is provided with an inlet 41 for injecting an adhesive into the accommodating portion 20 and a check valve that is provided in the inlet 41 and allows only the inflow of the adhesive from the outside to the inside of the lid 4. 43. Thereby, the backflow of the adhesive agent filled in the accommodating part 20 can be suppressed, and the leakage of the adhesive agent can be suppressed.

  Moreover, according to this embodiment, the cap 42 which has the insertion part 42A inserted in the injection port 41 is provided, the injection port 41 is a regular octagon, and the insertion part 42A of the cap 42 is circular in cross section. Thereby, when the cap 42 is attached, a gap is generated between the injection port 41 and the insertion portion 42a, so that the internal pressure does not increase and the cap 42 is difficult to come off. Moreover, since there are few contact parts, it is easy to put in the cap 42. FIG.

  Moreover, according to this embodiment, the cover part 4 is comprised with the translucent member (it is translucent). Thereby, the filling amount of the adhesive agent into the accommodating portion 20 can be confirmed.

=== Other Embodiments ===
The above-described embodiments are for facilitating the understanding of the present invention, and are not intended to limit the present invention. The present invention can be modified and improved without departing from the gist thereof, and it goes without saying that the present invention includes equivalents thereof.

  In the above-described embodiment, the branch member 1 is arranged as shown in FIG. 9, but it may be upside down. Moreover, you may arrange | position so that a Z direction may become parallel to a horizontal surface (namely, sideways).

1 branch member, 2 main body, 4 lid,
10 1st fixing | fixed part, 11 receiving part, 11A plate accommodating part,
12 sawtooth plate, 12A recess, 12B sawtooth,
13 gripping member, 13A screw 20 accommodating portion,
30 second fixing part, 31 stopper, 32 gripping plate,
33 partitioning part, 34 stopper accommodating part, 35 plate accommodating part,
41 inlet, 42 cap, 42A insertion part,
43 Check valve, 44 screw, 45 guide pin, 46 screw hole,
50 optical cable, 51 optical fiber unit, 52 optical fiber,
53 bundle material, 55 outer jacket, 56 strength member,
57 Tear string, 58 protrusion,
100 terminal processing structure, 110 racks, 120 terminal equipment,
130 frame, 140 plate member,
200 injection member,
321 Upper gripping plate, 321T Upper protrusion, 321K protrusion,
322 Middle stage grip plate, 322T Middle stage protrusion, 322K Protrusion,
323 Lower plate, 323T Lower projection, 323K Protrusion

Claims (6)

A first fixing portion for fixing an end portion of the optical cable;
A second fixing portion for fixing a protective tube protecting the optical fiber branched from the optical cable;
With
The second fixing portion includes a gripping plate for gripping the protective tubes arranged in a plurality of stages, and a plate storage portion for storing the gripping plate ,
The holding plate is formed with a recess having a plurality of protrusions, and when the plurality of protection tubes are inserted in the recess, the protrusions respectively hold the protection tubes at each stage,
The gripping plate is composed of a plurality of plates arranged in the longitudinal direction of the protective tube,
The protrusions that hold the protection tube at each stage are formed on separate plates, respectively .
The plate accommodating portion is composed of a slit-shaped groove,
The branching member, wherein the plurality of plates constituting the gripping plate are accommodated in the same groove of the plate accommodating portion in a state of being overlapped in the longitudinal direction . The branch member according to claim 1,
In the gripping plate, a plurality of the recesses are formed in the longitudinal direction and in a direction orthogonal to the direction in which the protective tubes at each stage are arranged,
The second fixing portion has a plurality of partition portions that divide the grip portion of the protective tube corresponding to the plurality of concave portions,
The said partition wall portion of each have the plate accommodating portion is provided,
The branch member, wherein a position of the plate accommodating portion in the longitudinal direction is different depending on the partition wall. The branch member according to claim 1 or 2,
The first fixing part is
A V-shaped cable receiver,
A plate mounting portion provided in the cable receiving portion;
A serrated plate housed in the plate mounting portion;
With
The saw blade of the serrated plate protrudes from the cable receiving portion,
The branch member characterized by the above-mentioned. The branch member according to any one of claims 1 to 3,
A main body provided with the first fixing part and the second fixing part, and a lid covering the main body part;
The main body is
Between the first fixing part and the second fixing part, it has an accommodating part for accommodating an optical fiber branched from the optical cable,
The lid is
An injection port for injecting an adhesive into the housing part;
A check valve provided at the inlet and allowing only the adhesive to flow in from the outside to the inside of the lid;
A branch member characterized by comprising: The branch member according to claim 4,
A cap having an insertion portion to be inserted into the inlet;
The branch member, wherein the injection port is polygonal, and the insertion portion of the cap is circular in cross section. The branch member according to claim 4 or 5,
The lid is translucent or transparent,
The branch member characterized by the above-mentioned.

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