JP4724091B2 - Communication cable closure - Google Patents

Description

  The present invention relates to a communication cable closure for storing a connection portion between a main line communication cable and a communication cable attached to a home, that is, a so-called drop cable.

  Conventionally, Patent Document 1 discloses a communication cable closure configured to insert a drop cable introduced into a communication cable closure into a guide hole formed in a guide member.

JP 2001-13329 A

  The width of the drop cable may vary depending on the number of core wires. However, in the conventional communication cable closure, the inner diameter of the guide hole formed in the guide member and the width of the guide recess are the same. In addition, there is a problem that it is not possible to cope with drop cables having various widths.

  In addition, in the conventional communication cable closure, since the drop cable is only inserted into the guide hole or the guide recess of the guide member, the drop cable cannot be securely held. There was a problem that it was easy to move in the length direction.

  An object of the present invention is to solve the problems of the above-described conventional communication cable closure.

In order to achieve the above-mentioned object, the present invention is a communication cable closure, wherein the bottom body is composed of a plurality of plate-like blocks that are erected substantially parallel to the opposing long sides of the bottom plate of the bottom body. A first holding member is formed, and the first holding member includes a narrow gap for inserting a drop cable located between the lower thick portions of the opposing plate-like blocks, and also the relative of the opposing plate-like blocks. And a wide gap for inserting a drop cable positioned between the upper thin wall portions, and a plurality of plates along the opposing inclined sides of the bottom plate of the inner bottom member attached to the bottom plate of the bottom body. A second holding member is formed, and the plate-like block of the second holding member has an outer thin portion, an intermediate thick portion, and an inner thick portion along the length direction of the plate-like block. And is divided into three areas A wide gap for drop cable insertion is formed between the outer thin portions of the plate-like blocks facing each other, and the drop cable insertion is inserted between the intermediate thick portions of the plate-like blocks facing each other. An intermediate width gap for inserting a drop cable that is narrower than a wide gap is formed, and a gap for inserting a drop cable that is narrower than the intermediate width gap for inserting the drop cable is formed between the inner thick portions of the opposed plate-like blocks. A narrow gap is formed, and further, the first holding member and the second holding member are disposed so as to face each other, and the center of the drop cable insertion gap formed in the second holding member is formed. The wire and the center line of the drop cable insertion gap formed in the first holding member are arranged so as to intersect each other.

  Since the present invention is configured as described above, it has the following effects.

  A first holding member having a plurality of drop cable insertion gaps into which drop cables having different widths can be inserted, and a second holding member having a plurality of drop cable insertion gaps into which drop cables having different widths can be inserted. Therefore, it is possible to cope with a plurality of drop cables having different widths, and thus the versatility of the communication cable closure is improved.

  Since the center line of the drop cable insertion gap formed in the first holding member and the center line of the drop cable insertion gap formed in the second holding member intersect each other, the drop cable has the first Since the light is refracted between the holding member and the second holding member, the movement of the drop cable in the length direction and the vertical direction can be effectively limited.

  Examples of the present invention will be described below. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.

  In FIG. 1, reference numeral 1 denotes a bottom body constituting a communication cable closure. A long side wall 1 b is formed on one long side of the bottom plate 1 a of the bottom body 1. Further, the short side of the bottom plate 1a is connected to both end portions of the long side wall 1b and has a main cable introduction side wall 1c having substantially the same height as the long side wall 1b, and a main cable introduction side wall. A central side wall 1d that is connected to 1c and is lower than the main cable introduction side wall 1c, and a first holding member H1 are formed. A long side ridge 1e having a low height is formed on the other long side of the opposing long side of the bottom plate 1a. A recess 1c1 into which the trunk cable is inserted is formed in the trunk cable introduction side wall 1c.

  A pair of well-known trunk cable fixing brackets V are attached to the bottom plate 1a located near the trunk cable introduction side wall 1c along the trunk cable introduction side wall 1c and at a predetermined interval so as to sandwich the recess 1c1. The mounting block 1f is erected, and a screw hole 1f1 is formed at the upper end of the mounting block 1f. A tension member fixing member S is attached to the bottom plate 1a along the long side wall 1b. The tension member fixing member S has a substantially L-shaped cross section perpendicular to the longitudinal direction from the horizontal portion s1 and the vertical portion s2, and is formed in a screw insertion hole formed in the horizontal portion s1. The screw N is inserted into the bottom plate 1a, and the screw N is screwed into a screw hole formed in the bottom plate 1a. Further, a tunnel-like tension member insertion hole s3 is formed in the vertical portion s2 along the longitudinal direction. Further, a pair of screw holes s4 reaching the tension member insertion hole s3 are formed in the vertical portion s2 located above the tension member insertion hole s3, and a tension member fixing bolt B is provided in the screw hole s4. It is screwed.

  Next, the 1st holding member H1 is demonstrated using FIGS. 1-4.

  The first holding member H1 is formed by extending the bottom plate 1a located in the vicinity of both end portions of the long side ridge 1e to the outside, and extending the bottom plate along the opposing short sides of the bottom plate 1a. It is formed in the part 1a1. The first holding member H1 has a plurality of vertically-shaped rectangular plate blocks h1 standing upright on the bottom plate extension 1a1, and the plate-like block h1 is substantially on the long side of the bottom plate 1a. Stands in parallel. In the present embodiment, an example in which eleven plate-like blocks h1 are erected is shown.

  By forming a horizontal step h1a in the middle of the opposing surfaces of the adjacent plate-like blocks h1, the plate-like block h1 has a lower thick portion extending from the bottom plate extension 1a1 to the middle of the plate-like block h1. h1b and an upper thin part h1c extending from the lower thick part h1b to the upper end of the plate-like block h1 are formed. In this way, the narrow gap W1 for inserting the drop cable having a predetermined width is formed between the opposed lower thick portions h1b, and the opposed lower thick portions are disposed between the opposed upper thin portions h1c. A wide gap W2 for inserting a drop cable having a predetermined width wider than the narrow gap W1 for inserting a drop cable between h1b is formed. A plurality of vertical ridges h1b ′ are formed on the opposed surface of the opposed lower thick portion h1b. Similarly, a plurality of vertical ridges h1c ′ are also formed on the opposed surface of the opposed upper thin portion h1c. Is formed. In addition, the horizontal level | step difference h1a is not formed in the outer surface of plate-shaped block h1 'located in both ends.

  Next, the inner bottom member 2 attached to the bottom plate 1a of the bottom body 1 will be described with reference to FIG.

  The inner bottom member 2 is formed slightly smaller than the bottom plate 1a of the bottom main body 1, and the inner bottom member 2 has a bottom plate 2a and a short side wall 2b2 facing the long side wall 2b1 facing each other. The peripheral wall 2b is formed. Of the four corners formed by the long side wall 2b1 and the short side wall 2b2, the bottom plate 2a in the vicinity of both ends of one long side wall 2b1 is cut into a substantially triangular shape to thereby form the inclined side 2b2. 'Is formed, and the short side wall 2b2 is not formed on the inclined side 2b2'. Of the four corners formed by the long side wall 2b1 and the short side wall 2b2, the bottom plate 2a near the both ends of the other long side wall 2b1 When the inner bottom member 2 is attached, a through hole 2c through which the attachment block 1f standing on the bottom plate 1a of the bottom body 1 is inserted is formed. In this embodiment, an example in which two mounting blocks 1e are formed along the main trunk cable introduction side wall 1c of the bottom main body 1 is shown. Two through holes 2c are formed along the side wall 2b2.

  Near the center of the bottom plate 2 a of the inner bottom member 2, a rectangular notch 2 d is formed. When the inner bottom member 2 is attached to the bottom main body 1, it is attached to the bottom plate 1 a of the bottom main body 1. The formed tension member fixing member S is configured to be disposed in the notch 2d. Reference numeral 2e denotes a locking member comprising a vertical piece 2e1 substantially perpendicular to the bottom plate 2a and a horizontal piece 2e2 extending substantially perpendicularly to the vertical piece 2e1 from the upper end of the vertical piece 2e1. An appropriate number of locking members 2e are formed.

  A second holding member H2 is formed on the bottom plate 2a located near the inclined side 2b2 'formed on the bottom plate 2a. The second holding member H2 includes a plurality of rectangular plate-like blocks h2 that are vertically long and have a vertical cross-sectional shape standing on the bottom plate 2a, and the plate-like block h2 extends along the inclined side 2b2 ′ of the bottom plate 2a. Standing up.

  The central portion of one long side wall 2b1 is deleted over a predetermined length, and the bottom plate 2a in the vicinity of the deleted portion is notched so that the inner bottom member 2 has a notch. A recess 2f is formed.

  Next, the second holding member H2 described above will be described with reference to FIGS.

  The opposing surfaces of the adjacent plate-like blocks h2 of the second holding member H2 are divided into three regions in the length direction (the direction along the bottom plate 2a), and the inner bottom member 2 is attached to the bottom main body 1. The outer region located on the first holding member H1 side, the intermediate region connected to the outer region, and the inner region connected to the intermediate region, the outer region and the intermediate region By forming the vertical step h2a between the intermediate region and the inner region, the plate-like block h2 has the outer thin portion h2c, the intermediate thick portion h2d, and the inner thickness. It is divided into three regions with the meat portion h2e.

  As described above, the wide gap W3 for drop cable insertion having a predetermined width is formed between the opposed outer thin portions h2c, and the opposed outer thin portions h2c are disposed between the opposed intermediate thick portions h2d. An intermediate width gap W4 for drop cable insertion having a predetermined width narrower than the wide gap W3 for drop cable insertion therebetween is formed, and further, between the opposed inner thick portions h2e, between the opposed intermediate thick portions h2d. A narrow width W5 for inserting the drop cable having a predetermined width narrower than the intermediate width gap W4 for inserting the drop cable is formed. A plurality of vertical ridges h2c ′ are formed on the facing surface of the opposed outer thin portion h2c, and a plurality of vertical ridges h2d ′ are also formed on the facing surface of the opposed intermediate thick portion h2d. In addition, a plurality of vertical protrusions h2e ′ are also formed on the facing surface between the opposed inner thick portions h2e.

  The vertical steps h2a and h2b are not formed on the outer surfaces of the plate-like blocks h2 ′ located at both ends, and h2 ″ is a plate-like block h2 ′ where the vertical steps h2a and h2b are not formed. Among these, the plate-like block is erected on the plate-like block h2 ′ side that is located on the side of the through hole 2c formed in the bottom plate 2a, and the vertical steps h2a and h2b are included in such a plate-like block. Such a plate-shaped block h2 ″ may be a plate-shaped block h2 having vertical steps h2a and h2b.

  After the inner bottom member 2 described above is placed on the bottom plate 1a of the bottom main body 1, the screw N is inserted into an appropriate number of screw insertion holes formed in the inner bottom member 2, and the screw N is By being screwed into a screw hole formed in the bottom plate 1a of the main body 1, the inner bottom member 2 is configured to be attached to the bottom main body 1 as shown in FIG.

  Further, as shown in FIG. 10, when the first holding member H1 and the second holding member H2 are viewed in plan, the wide gap W3 for inserting the drop cable formed in the second holding member H2, the drop An extension line between the center line L1 of the intermediate width gap W4 for inserting the cable and the narrow gap W5 for inserting the drop cable and the long side wall 1b of the bottom plate 1a of the bottom body 1 (or the long side wall 2b1 of the inner bottom member 2). The angle θ1 formed with L2 is the long side wall 1b of the bottom line 1a of the bottom plate 1a of the bottom body 1 and the narrow line W1 for the drop cable insertion and the wide gap W2 for the drop cable insertion formed in the first holding member H1. (Or, the long side wall 2b1 of the inner bottom member 2) is configured to be larger than an angle θ2 formed with the extension line L2.

  As shown in FIG. 1, the trunk cable fixing member V has a lower fixing bracket V ′ and an upper fixing bracket V ″ having the same shape. The lower fixing bracket V ′ and the upper fixing bracket V ″ are And formed by molding a belt-shaped metal plate material, each having a semicircular portion v1 and a horizontal portion v2 extending from both ends of the semicircular portion v1. A screw insertion hole v2a is formed in the horizontal portion v2.

  The trunk cable K having a circular cross-section perpendicular to the length direction is sandwiched between the semicircular portion v1 of the lower fixing bracket V ′ and the semicircular portion v1 of the upper fixing bracket V ″, and then the lower portion A screw insertion hole v2a drilled in the horizontal portion v2 of the fixing bracket V ′, a screw insertion hole v2a drilled in the horizontal portion v2 of the upper fixing bracket V ″, and a mounting block erected on the bottom plate 1a of the bottom body 1 After aligning the 1f screw insertion hole 1f1, the screw N was drilled in the screw insertion hole v2a drilled in the horizontal portion v2 of the lower fixing metal fitting V ′ and the horizontal portion v2 of the upper fixing metal fitting V ″. As shown in FIG. 11, the main cable is inserted into the screw insertion hole v2a and screwed into the screw hole 1f1 of the mounting block 1f erected on the bottom plate 1a of the bottom main body 1. The trunk cable K is connected via the fixing member V. And it is configured so that it can be attached to the part body 1.

  Next, an outline of the tray T attached to the bottom main body 1 via an appropriate hinge member will be described with reference to FIGS. 12 and 13.

  The tray T has a bottom plate t1 and a peripheral wall t2, and one side portion of the peripheral wall t2 is cut out over a predetermined length, and the bottom plate 1 located at the cut portion has a separation side wall. t2a is erected. A pair of core wire lead-in / out portions t3 are formed at both ends of the separation side wall t2a. An intermediate plate t3a is erected on the bottom plate t1 located between the separation side wall t2a and the end t2b of the peripheral wall t2 located near both ends of the separation side wall t2a, and the separation side wall t2a and the intermediate plate t3a Between the intermediate plate t3a and the peripheral wall t2 in the vicinity of the end t2b, a core wire lead-in / out gap t3b constituting the core wire lead-in / out portion t3 is formed.

  A locking piece t4 extending in the horizontal direction from the upper end of the peripheral wall t2 is formed at an appropriate position on the upper end of the peripheral wall t2, and the locking piece extending in the horizontal direction also from the upper end of the separation side wall t2a. t5 is formed. Further, a fusion part holding member t6 is formed on the bottom plate t1. The fusion-portion holding member t6 is configured by a sandwiching plate t6a erected on the bottom plate t1 at a predetermined interval, and by inserting a core-wire fusion portion between adjacent sandwiching plates t6a, the core wire It is comprised so that a melt | fusion part can be hold | maintained.

  On the outer surface of the separation side wall t2a of the tray T, a pair of male hinge members t7 each including a support piece t7a and a hinge pin t7b that bridges the tip of the support piece t7a are formed. Further, between the pair of male hinge members t7, a pair of female hinge members t8 in which a fitting recess t8a along the separation side wall t2a is formed on the upper surface. The female hinge member t8 has the same configuration as that of the male hinge member t7. That is, the female support member t8 includes an opposing support piece formed on the outer surface of the separation side wall t2a of the tray T and a hinge pin that bridges the tip of the support piece. A pair of male hinge members (not shown) are formed.

  The above-described tray T has a male hinge member disposed on the separation sidewall t2a of the tray T positioned above the fitting recess t8a of the female hinge member t8 disposed on the separation sidewall t2a of the tray T positioned below. These hinge pins are inserted into each other so that they are hinged to each other.

  In FIG. 1, E is a metal substantially U-shaped frame member having a horizontal part e1 and vertical parts e2 erected on both ends of the horizontal part e1, and the upper end of the vertical part e2 of the frame member E The part is formed with a hinge pin fitting recess e3. The frame member E inserts the screw N into a pair of screw insertion holes formed in the horizontal part e1 of the frame member E, and screws the screw N into a screw hole formed in the bottom plate 1a of the bottom body 1. As a result, it is attached to the bottom plate 1 a of the bottom body 1.

  A frame member attached to the bottom body 1 by fitting a hinge pin of a male hinge member formed on the tray T positioned at the bottom into the hinge pin fitting recess e3 of the frame member E attached to the bottom body 1 The tray T can be hinge-connected to E.

  The hinge connection between the bottom main body 1 and the tray T and the hinge connection between the trays T via the frame member E is not limited to the hinge connection structure described above, and various known hinge connection structures are used. be able to.

  Next, the wiring of the trunk cable K, the drop cable D, etc. to the bottom body 1, the inner bottom member 2, and the tray T will be described. In the case of the trunk cable K, as an example, as described above, the cross-sectional shape perpendicular to the length direction is circular, and in the case of the drop cable D, as an example, The cross-sectional shape perpendicular | vertical with respect to a length direction is a substantially rectangular shape with a vertically long shape.

  First, the wiring of the trunk cable K and the wiring of the drop cable D will be described with reference to FIGS. 11 and 14. As shown in FIG. 15, the drop cable D has a substantially rectangular cross section perpendicular to the longitudinal direction, and a predetermined number of core wires D ′ (FIG. 15) 2 shows two core wires D ′) and a predetermined number of tension members D ″ (two tension members D ″ are shown in FIG. 15). Yes.

  The outer jacket of the main cable K is peeled off to prepare a tension member k1 and a core wire k2 having a predetermined length, and then, as described above, the semicircular portion v1 of the lower fixing bracket V ′ and the half of the upper fixing bracket V ″ The trunk cable K is held between the circular portion v1 and then the screw insertion hole v2a drilled in the horizontal portion v2 of the lower fixing bracket V ′ and the screw drilled in the horizontal portion v2 of the upper fixing bracket V ″. After the insertion hole v2a and the screw insertion hole 1f1 of the mounting block 1f provided upright on the bottom plate 1a of the bottom body 1 are aligned, the screw N is inserted into the horizontal portion v2 of the lower fixing fitting V ′. The screw v is inserted into the screw insertion hole v2a formed in the horizontal portion v2 of the hole v2a and the upper fixing bracket V ″, and the screw N is screwed into the screw hole 1f1 of the mounting block 1f erected on the bottom plate 1a of the bottom body 1. The main cable The trunk cable K is attached to the bottom body 1 via the member V. Next, the tension member k1 is inserted into the tension member insertion hole s3 formed in the tension member fixing member S, and the tension member insertion hole s3 is inserted. The tension member fixing bolt B screwed into the screw hole s4 drilled in the upper vertical portion s2 is rotated to fix the tension member k1 to the bottom of the tension member insertion hole s3 and the tension member fixing. The tension member k1 is fixed to the tension member fixing member S by being pinched by the tip of the bolt B for use, and the core wire k2 of the trunk cable K is connected to the locking member 2e formed on the inner bottom member 2. While being locked, it is placed on the bottom plate 2 a of the inner bottom member 2, and its tip is a notch formed in the inner bottom member 2. Through section 2f, it is introduced into the core inlet-outlet gap t3b constituting the core derivation join the club t3 of the tray T located above, and is configured to enter into the tray T.

  On the other hand, as will be described later, the drop cable D is sandwiched between the first holding member H1 and the first holding member H2, and the core wire D ′ of the drop cable D is similar to the core wire k2 of the trunk cable K described above. While being locked to the locking member 2e formed on the inner bottom member 2, it is placed on the bottom plate 2a of the inner bottom member 2, and its tip portion passes through a notch recess 2f formed on the inner bottom member 2, It is introduced into the core wire lead-in / out gap t3b that constitutes the core wire lead-in / out portion t3 of the tray T positioned above, and is configured to enter the tray T.

  The jacket of the drop cable D is peeled off, and the core wire D ′ of the drop cable D is exposed. The tension member D ″ of the drop cable D is cut. Next, as shown in FIGS. 16 and 17, the drop cable D is attached to the first holding member H1 according to the width A of the drop cable D. 16 is inserted into the formed drop cable insertion narrow gap W1 or the drop cable insertion wide gap W2. The side surface d1 of the narrow drop cable D1 inserted into the drop cable insertion narrow gap W1 is shown in FIG. As shown in the drawing, the lower surface d2 of the narrow drop cable D1 sandwiched between the opposed lower thick portions h1b of the adjacent plate-like blocks h1 and fitted into the narrow gap W1 for drop cable insertion is: It is placed on the bottom plate extension 1a1 of the bottom main body 1.

  Further, as shown in FIG. 17, the side surface d1 of the wide drop cable D2 inserted into the wide gap W2 for inserting the drop cable is sandwiched by the opposed upper thin portions h1c of the adjacent plate-like blocks h1. Moreover, a part of the bottom surface of the lower surface d2 of the wide drop cable D2 inserted into the wide gap W2 for inserting the drop cable is placed on the horizontal step h1a. In this way, the drop cables D1, D2 are held by the first holding member H1.

  Next, the drop cables D1 and D2 are held by the second holding member H2.

  As shown in FIG. 18, the wide drop cable D2 described above is inserted into the drop cable insertion wide gap W3 formed in the second holding member H2, but the drop cable insertion wide gap W3. The side surface d1 of the wide drop cable D2 inserted into the outer plate is sandwiched between the opposing thin outer portions h2c of the adjacent plate blocks h2, and the lower surface d2 of the wide drop cable D2 is It will be placed on the bottom plate 2a. Furthermore, a part of the front end surface d3 of the wide drop cable D2 is configured to abut on a vertical step h2a formed at the boundary between the outer thin portion h2c and the intermediate thick portion h2d. In this way, the wide drop cable D2 is held by the second holding member H2.

  On the other hand, the narrow drop cable D1 described above is inserted into the drop cable insertion wide gap W3 and the drop cable insertion intermediate width gap W4 formed in the second holding member H2, as shown in FIG. At the same time, the side surface d1 of the narrow drop cable D1 that is inserted into the narrow gap W5 for inserting the drop cable is opposed to the adjacent plate block h2. The lower surface d2 of the narrow drop cable D1 sandwiched between the inner thick portions h2e is placed on the bottom plate 2a of the inner bottom member 2.

  As described above, since the drop cables D1 and D2 are held by the first holding member H1 and the second holding member H2, movement of the drop cables D1 and D2 in the length direction and the vertical direction is restricted. Become.

  As described above, when the first holding member H1 and the second holding member H2 are viewed in plan, the drop cable insertion wide gap W3 and the drop cable insertion intermediate width gap W4 formed in the second holding member H2. The angle θ1 between the center line L1 of the narrow gap W5 for inserting the drop cable and the extension line L2 of the long side wall 1b of the bottom plate 1a of the bottom body 1 (or the long side wall 2b1 of the inner bottom member 2) is The center line L3 of the drop cable insertion narrow gap W1 and the drop cable insertion wide gap W2 formed on the first holding member H1 and the long side wall 1b of the bottom plate 1a of the bottom body 1 (or the inner bottom member 2). In other words, the drop cable insertion gaps W3, W4 formed in the second holding member H2 are configured to be larger than an angle θ2 formed with the extended line L2 of the long side wall 2b1). , W5 and the center line L3 of the drop cable insertion gaps W1 and W2 formed in the first holding member H1 intersect with each other, so that the drop cables D1 and D2 are shown in FIG. Refracted between the first holding member H1 and the second holding member H2, so that the movement of the drop cables D1, D2 in the length direction and the vertical direction is surely limited. Will be.

  As described above, the core wire k2 of the trunk cable K is placed on the bottom plate 2a of the inner bottom member 2 while being locked to the locking member 2e formed on the inner bottom member 2, and the tip portion thereof is the inner bottom portion. After passing through the notch recess 2f formed in the material 2, it is introduced into the core wire lead-in / out gap t3b constituting the core wire lead-in / out portion t3 of the tray T positioned above, enters into the tray T, and the core wire D of the drop cable D Similarly, 'is also mounted on the bottom plate 2a of the inner bottom member 2 while being locked to the locking member 2e formed on the inner bottom member 2, and the tip portion thereof is a cut formed on the inner bottom member 2. It passes through the notch recess 2f and is introduced into the core wire lead-in / out gap t3b constituting the core wire lead-in / out portion t3 of the tray T positioned above and enters the tray T.

  Then, as shown in FIG. 20, the core wire D ′ of the drop cable D and the core wire k2 of the trunk cable K are wound while being locked to the locking pieces t4 and t5, and the core wire D of the drop cable D is wound. 'And the extra length portion of the core wire k2 of the trunk cable K is formed. Thereafter, the tip end of the core wire D ′ of the drop cable D and the tip end of the core wire k2 of the trunk cable K are fused, and the fused portion M is clamped between the adjacent clamping plates t6a of the fusion holding member t6. become.

  As described above, the first holding member H1 is formed with the narrow gaps W1 and W2 for inserting the drop cables D5 having different widths, and the second holding member H2 also has the gaps W1 and W2. Since the drop cable insertion gaps W3, W4, and W5 into which a plurality of drop cables D having different widths can be inserted are formed, the communication cable closure of the present invention is compatible with a plurality of drop cables D having different widths. Therefore, the versatility of the communication cable closure is improved.

  In the embodiment described above, an example is shown in which the first holding member H1 is formed with two gaps, a narrow gap W1 for inserting a drop cable and a wide gap W2 for inserting a drop cable. In addition to the horizontal step h1a described above, another horizontal step is formed on the opposing surface of the block h1, so that the drop cable insertion gap can be increased. Further, the drop cable having an intermediate width between the narrow drop cable D1 and the wide drop cable D2 can be fitted into either the narrow gap W1 for inserting the drop cable or the wide gap W2 for inserting the drop cable. it can. Since the vertical protrusion h1b ′ is formed on the opposing surface of the lower thick part h1b, and the vertical protrusion h1c ′ is also formed on the opposing surface of the opposing upper thin part h1c, the drop Even if the width of the cable D is slightly different, the drop cable D can be held by the vertical protrusions h1b ′ and h1c ′. When the width of the drop cable D is substantially the same as the gap between the drop cable insertion gaps W1 and W2, the vertical ridges h1b ′ and h1c ′ bite into the side surface d1 of the drop cable D, Will be retained.

  As described above, the inner bottom member 2 is disposed on the bottom main body 1, and the tray T is hingedly connected to the bottom main body 1 via the frame member E attached to the bottom main body 1. 21, the bottom body 1, the inner bottom member 2, and the tray T are assembled, and then, as described above, the trunk cable K and the drop cable D are wired, and then on the top. The tray T that is positioned is covered with an appropriate lid member (not shown), and the bottom main body 1, the inner bottom member 2, and the tray T are covered with a box-like lid member that is open (not shown). It will be covered.

  An optical fiber trunk cable is applied as an example of the trunk cable K in the above-described embodiment, and an optical fiber drop cable is applied as an example of the drop cable D.

FIG. 1 is a perspective view of a bottom main body and the like constituting a communication cable closure of the present invention. FIG. 2 is a vertical sectional view of the first holding member disposed on the bottom main body shown in FIG. FIG. 3 is a partially enlarged perspective view of the first holding member shown in FIG. FIG. 4 is a partially enlarged vertical sectional view of the first holding member shown in FIG. FIG. 5 is a perspective view of an inner bottom member constituting the communication cable closure of the present invention. FIG. 6 is a plan view of the second holding member disposed on the inner bottom member shown in FIG. FIG. 7 is a partially enlarged perspective view of the second holding member shown in FIG. FIG. 8 is a partially enlarged plan view of the second holding member disposed on the inner bottom member shown in FIG. FIG. 9 is a plan view of the bottom body with the inner bottom member attached thereto. FIG. 10 is an enlarged plan view of the first holding member and the second holding member in FIG. 9. FIG. 11 is a perspective view of the bottom main body and the inner bottom member in a state where the trunk cable and the drop cable are wired. FIG. 12 is a perspective view of a tray constituting the communication cable closure of the present invention. FIG. 13 is a plan view of a tray constituting the communication cable closure of the present invention. FIG. 14 is a plan view of the bottom body and the inner bottom member in a state where the trunk cable and the drop cable are wired. FIG. 15 is a cross-sectional view perpendicular to the longitudinal direction of the drop cable. FIG. 16 is a vertical sectional view of the first holding member in a state in which the drop cable is inserted. FIG. 17 is a vertical cross-sectional view of the first holding member in a state where the drop cable is similarly inserted. FIG. 18 is a plan view of the second holding member in a state in which the drop cable is inserted. FIG. 19 is a plan view of the second holding member with the drop cable inserted therein. FIG. 20 is a perspective view of the tray in a state where the core wire of the trunk cable and the core wire of the drop cable are wired. FIG. 21 is a perspective view showing a state in which the bottom main body, the inner bottom member, and the tray constituting the communication cable closure of the present invention are assembled, and the trunk cable and the drop cable are wired.

Explanation of symbols

D ... Drop cable D '... Core wire D "... Tension member H1 ... First Holding member h1 ... Plate block H2 ... Second holding member h2 ... Plate block K ... ... Trunk cable k1 ... Tension member k2 ... Core wire T ... Tray 1 ...・ Bottom body 2 ・ ・ ・ ・ ・ ・ Inner bottom member

Claims (1)

The bottom main body is formed with a first holding member, which is made up of a plurality of plate-like blocks, and is arranged substantially parallel to the opposite long sides of the bottom plate of the bottom main body. A narrow gap for inserting the drop cable located between the lower thick portions of the plate-like block to be formed, and a wide gap for inserting the drop cable located between the upper thin portions of the opposing plate-like block facing each other. And a second holding member comprising a plurality of plate-like blocks is formed along the opposite inclined sides of the bottom plate of the inner bottom member attached to the bottom plate of the bottom body, and the second holding member The plate-like block is divided into three regions of an outer thin portion, an intermediate thick portion, and an inner thick portion along the length direction of the plate-like block. Drop cable insertion width between outer thin parts A gap cable is formed, and an intermediate width gap for inserting a drop cable that is narrower than the wide gap for inserting the drop cable is formed between the intermediate thick portions of the opposed plate-like blocks. A narrow gap for inserting a drop cable that is narrower than the intermediate width gap for inserting the drop cable is formed between the inner thick portions of the plate-like blocks facing each other. Furthermore, the first holding member and the second The holding member is disposed so as to face each other, and the center line of the drop cable insertion gap formed in the second holding member and the center of the drop cable insertion gap formed in the first holding member A communication cable closure, wherein the wires are arranged so as to intersect with each other .

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