Cable protection pipe, separator joint, and cable protection pipe connection section

Abstract

To provide a technique capable of suppressing cross-sectional misalignment when connecting adjacent cable protection pipes in a cable protection pipe having a separator structure integrated with a pipe body.SOLUTION: A cable protection pipe 100 includes a pipe body 110, a separator section 120 integrally formed with the pipe body 110, and a retaining protrusion 130. The separator section 120 is disposed within the pipe body 110 along a pipe axis O1, partitioning the interior of the pipe body 110 into a first passage PL1 and a second passage PL2. The retaining protrusion 130 is positioned on the second passage PL2 side relative to the separator section 120 and projects radially inward of the pipe body 110 from the inner wall of the pipe body 110. Furthermore, a separator joint 1 is used to connect cable protection pipes 100 to each other and includes a plate-shaped joint body portion 10. The end of the joint body portion 10 is configured to be insertable between the separator section 120 and the retaining protrusion 130 of the cable protection pipe 100.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a cable protection tube, a separator joint, and a cable protection tube connection portion. [Background technology]

[0002] Conventionally, a so-called one-pipe separated type cable protection pipe has been known, in which the inside of the cable protection pipe main body is divided by separators (separator systems), and communication cables can be arranged in each divided space. Multiple cables are housed in the cable protection pipe, either directly or inserted into a sheath pipe. A number of such cable protection pipes are connected along the central axis of the cable protection pipe and buried underground, for example, to form a cable protection conduit.

[0003] For example, Patent Document 1 discloses a cable protection tube in which a separate portion is integrated with a straight pipe (pipe body). Furthermore, as for a method of connecting cable protection tubes having separate portions, Patent Documents 2 and 3 disclose separator systems in which the separate portion is made of a member separate from the straight pipe. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-092579 [Patent Document 2] Japanese Patent Publication No. 2022-052226 [Patent Document 3] Japanese Patent Publication No. 2022-052407 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in a cable protection tube in which a separate portion is integrated with a straight tube as in Patent Document 1, a connection structure for connecting the divided tubes without causing misalignment of the cross sections has not been established.

[0006] The present invention has been made in consideration of the above circumstances, and aims to provide a technology that can suppress misalignment of the cross section when connecting adjacent cable protection tubes that have a separate structure integrated with the tube body. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention proposes the following means. (1) The cable protection tube of the present disclosure comprises a tube body, and a separate portion and a retaining protrusion formed integrally with the tube body, the separate portion being arranged inside the tube body along the tube axis and dividing the inside of the tube body into a first pipe line and a second pipe line, and the retaining protrusion being arranged on the second pipe line side of the separate portion and protruding from the inner wall of the tube body radially inward of the protection tube body. (2) The separator joint of the present disclosure is a separator joint used to connect cable protection tubes together, and includes a plate-shaped joint main body portion, and an end of the joint main body portion is configured to be insertable between the separator portion and the retaining protrusion of the cable protection tube. (3) The joint main body may further include a protrusion, and the protrusion may be provided on a surface of the cable protection tube facing the second conduit when the end of the joint main body is inserted between the separate portion and the retaining protrusion of the cable protection tube, and may be provided at a position overlapping with the retaining protrusion of the cable protection tube when viewed from the axial direction of the cable protection tube. (4) The separator joint may further include a hole provided at a first end of the joint main body, and the hole may be configured to be connectable to the separate portion of the cable protection tube by a penetrating member when the separator joint is inserted between the separate portion of the cable protection tube and the retaining protrusion. (5) The joint body may include a first joint body and a second joint body, and may further include a connecting member connecting the first joint body and the second joint body, and the first joint body and the second joint body may be connected by the connecting member so as to be movable relative to each other. (6) The cable protection tube connection portion of the present disclosure includes a first cable protection tube and a second cable protection tube, which are cable protection tubes, and a separator joint used to connect the first cable protection tube and the second cable protection tube, wherein a first end of the separator joint is disposed between the separating portion and the retaining protrusion of the first cable protection tube, and a second end of the separator joint is disposed between the separating portion and the retaining protrusion of the second cable protection tube. [Effects of the Invention]

[0008] The present invention can provide a technique that can suppress misalignment of the cross section when connecting adjacent cable protection tubes in a cable protection tube having a separate structure that is integrated with the tube main body. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a partially cutaway perspective view of a cable protection conduit including a cable protection tube according to an embodiment of the present disclosure. [Figure 2] 1 is a cross-sectional view of a cable protection tube according to an embodiment of the present disclosure. [Figure 3] 1A is a plan view of a separator joint of a first embodiment, FIG. 1B is a side view of a separator joint of a first embodiment, and FIG. 1C is a front view of a separator joint of a first embodiment. [Figure 4] 1A and 1B are diagrams showing a state in which a first cable protection tube and a second cable protection tube are connected using a separator joint according to a first embodiment, where (A) is a side view and (B) is a plan view. Note that the tube body of the cable protection tube and the joint are shown in cross section. [Figure 5] 10A is a plan view of a separator joint of a second embodiment, FIG. 10B is a side view of the separator joint of the second embodiment, and FIG. 10C is a front view of the separator joint of the second embodiment. [Figure 6]10A and 10B are diagrams showing a state in which a first cable protection tube and a second cable protection tube are connected using a separator joint of a second embodiment, where (A) is a side view and (B) is a plan view. Note that the tube body of the cable protection tube and the joint are shown in cross section. [Figure 7] 10A is a plan view of a separator joint of a third embodiment, FIG. 10B is a side view of the separator joint of the third embodiment, and FIG. 10C is a cross-sectional view of the separator joint of the third embodiment. [Figure 8] 10A and 10B are diagrams illustrating a state in which a first cable protection tube and a second cable protection tube are connected using a separator joint according to a third embodiment, where (A) is a diagram illustrating a state in which the first cable protection tube and the second cable protection tube are linearly connected in a plan view, and (B) is a diagram illustrating a state in which the angle of the second cable protection tube relative to the first cable protection tube is changed in a plan view. [Figure 9] 7A is a partially enlarged side view of the separator joint of the present embodiment shown in FIG. 7B, and FIG. 7B is a side cross-sectional view of the connection portion between the joint main body and the connecting member. [Figure 10] 10 is a side cross-sectional view showing a case where the second joint body has moved downward relative to the first joint body. FIG. [Figure 11] 10 is a side cross-sectional view showing a state in which the second joint body has moved upward relative to the first joint body. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of a cable protection tube 100 according to the present disclosure will be described with reference to FIGS. As shown in Fig. 1, a cable protection tube 100 of this embodiment is used in a cable protection conduit 300. The cable protection conduit 300 includes a so-called one-pipe separate type cable protection tube 100. A communication cable 310 is housed inside the cable protection tube 100. The cable protection tube 100 is buried underground and is used to install the communication cable 310 underground. The cable protection conduit 300 may include a plurality of cable protection tubes 100. In this embodiment, the cable protection conduit 300 includes two cable protection tubes 100 (a first cable protection tube 100A and a second cable protection tube 100B). The number of cable protection tubes 100 included in the cable protection conduit 300 is not limited to two, and may be, for example, three or more.

[0011] The internal space of the cable protection tube 100 is vertically divided by a separator 120. In the illustrated example, the upper conduit PL1 accommodates a lead-in cable 311, which is a communication cable 310. The lower conduit PL2 accommodates a trunk cable 312, which is a communication cable 310 arranged in a sheath tube 320.

[0012] FIG. 2 shows a cross-sectional view of the cable protection tube 100 of this embodiment. As shown in FIG. 2, the cable protection tube 100 includes a tube main body 110, a separate portion 120 and a holding protrusion 130 that are formed integrally with the tube main body 110.

[0013] The pipe body 110 is formed in the shape of a straight circular pipe. The separate portion 120 is formed integrally with the pipe main body 110 and partitions the interior space of the cable protection tube 100 into an upper pipe line (first pipe line PL1) and a lower pipe line (second pipe line PL2) in a cross-sectional view. The separate portion 120 has a substantially V-shape in a cross-sectional view. Specifically, the separate portion 120 includes a flat portion 121A located in the center in the width direction (left-right direction in the drawing), and a pair of inclined portions 121B extending obliquely upward (toward the upper pipe line (first pipe line PL1)) from both edges of the flat portion 121A in the width direction with respect to an extension line of the flat portion 121A. The separate portion 120 extends over the entire length of the pipe main body 110. Note that the direction in which the separate portion 120 partitions the interior space of the cable protection tube 100 is not limited to the up-down direction and may be, for example, the left-right direction. The holding protrusions 130 are arranged closer to the second pipe line PL2 than the separate part 120, and are formed to protrude from the inner wall of the pipe main body 110 toward the inside in the radial direction of the pipe main body 110. A pair of holding protrusions 130 are provided. The pair of holding protrusions 130 are provided at both ends of the separate part 120 in the width direction. Each holding protrusion 130 extends over the entire length of the pipe main body 110. However, the holding protrusions 130 may be provided on part of the pipe main body 110 in the pipe axial direction. The holding protrusions 130 may be thicker or thinner than the separate part 120, or may have the same thickness.

[0014] The separator portion 120 and the holding protrusion 130 thus formed form a recess 140 into which an end of the separator joint 1 (described later) can be inserted and held.

[0015] The cable protection tubes 100 are connected to each other at cable protection tube connecting portions 200 .

[0016] In the illustrated example, a sheath tube 320 is arranged in the lower pipe line PL2, but the sheath tube 320 does not have to be arranged. When the sheath tube 320 is arranged, the number of the sheath tubes 320 is not limited. The sheath tube 320 may be arranged in the upper pipe line PL1.

[0017] Next, an embodiment of the separator joint 1 used to connect the above-mentioned cable protection tubes 100 together will be described.

[0018] (First embodiment) Fig. 3(A) shows a plan view of a separator joint 1A of the first embodiment. Fig. 3(B) shows a side view of the separator joint 1A of the first embodiment. Fig. 3(C) shows the separator joint 1A of the first embodiment in a front view from the pipe axis direction (longitudinal direction). The separator joint 1A of this embodiment includes a joint body 10 and a protrusion 20 provided on the joint body 10. The separator joint 1A does not necessarily have to include the protrusion 20.

[0019] As shown in Fig. 3(C), the joint body 10 of this embodiment is plate-shaped and, when viewed from the front in the pipe axial direction (longitudinal direction), has a substantially V-shape that complementarily follows the second surface 30B of the separate part 120. As shown in Fig. 3(A), the joint body 10 of this embodiment has a substantially rectangular shape when viewed from above. The shape of the joint body 10 is not limited to a substantially V-shape in cross section or a substantially rectangular shape in plan view. Hereinafter, of the two surfaces of the joint main body 10, when the end of the joint main body 10 is inserted between the separator portion 120 and the holding protrusion 130 of the cable protection tube 100 (when the separator joint 1 is disposed inside the cable protection tube 100), the surface facing the first conduit PL1 of the cable protection tube 100 will be referred to as the first surface 30A, and the surface facing the second conduit PL2 will be referred to as the second surface 30B. Furthermore, of the two longitudinal ends of the joint main body 10, the end that is inserted into the first cable protection tube 100A (described later) will be referred to as the first end 41, and the end that is inserted into the second cable protection tube 100B will be referred to as the second end 42.

[0020] 3(C), the protrusion 20 is provided on the second surface 30B of the joint main body 10. The protrusion 20 is provided at a position that overlaps with the holding protrusion 130 of the cable protection tube 100 when viewed from the tube axis O1 direction of the cable protection tube 100 when the separator joint 1A is disposed inside the cable protection tube 100. In this embodiment, the protrusions 20 are provided on part of the long side of the joint body 10, and are provided in pairs at positions that are line-symmetrical with respect to the short-side center line L1 of the joint body 10. The number of protrusions 20 is not limited to one pair. The joint body 10 may be provided with only one protrusion 20. In this embodiment, the protrusion 20 is formed shifted toward the first end 41 from the longitudinal center line L2, but the position at which the protrusion 20 is formed is not limited to the above.

[0021] Fig. 4(A) shows a side view of a state in which a first cable protection tube 100A and a second cable protection tube 100B are connected using a separator joint 1A. Note that in Fig. 4(A), the tube main body 110 and the joint 210 of the cable protection tube 100 are shown in cross section, and the holding protrusion 130 is shown transparently, in order to show the positional relationship between the separator part 120 and the separator joint 1. Fig. 4(B) shows a plan view of a state in which the first cable protection tube 100A and the second cable protection tube 100B are connected using the separator joint 1A. Note that in Fig. 4(B), the tube main body 110 and the joint 210 of the cable protection tube 100 are shown in cross section, in order to show the positional relationship between the separator part 120 and the separator joint 1.

[0022] A procedure for connecting two cable protection tubes 100 (a first cable protection tube 100A and a second cable protection tube 100B) at a cable protection tube connecting portion 200 using the separator joint 1A of the first embodiment will be described. First, the first end 41 of the separator joint 1A is inserted between the separator portion 120 and the holding protrusion 130 of the first cable protection tube 100A. At this time, because the separator joint 1A of this embodiment has the protrusion 20, the depth to which the first end 41 of the separator joint 1A is inserted into the first cable protection tube 100A is restricted. Next, the joint 210 is attached to the first cable protection tube 100A. Note that the structure of the attached joint 210 is not limited to the example shown in the figures, and it is sufficient that the joint 210 has a structure that covers the periphery of the connection between the first cable protection tube 100A and the second cable protection tube 100B to keep the internal space between the first cable protection tube 100A and the second cable protection tube 100B watertight. After the fitting 210 is attached to the first cable protection tube 100A into which the separator fitting 1A has been inserted as described above, the second end 42 of the separator fitting 1A connected to the first cable protection tube 100A is inserted between the separate portion 120 and the holding protrusion 130 of the second cable protection tube 100B.

[0023] When connecting the first cable protection tube 100A and the second cable protection tube 100B as described above, if the separator joint 1A is inserted too deeply into the first cable protection tube 100A, the exposed length of the second end 42 of the separator joint 1A will be insufficient, and it may become difficult to insert the second end 42 of the separator joint 1A between the separation portion 120 and the retaining protrusion 130 of the second cable protection tube 100B.

[0024] If the separator joint 1A of the first embodiment has the protrusion 20, the protrusion 20 restricts the depth to which the first end 41 of the separator joint 1A is inserted into the first cable protection tube 100A.

[0025] When the protrusion 20 is formed shifted toward the first end 41 from the longitudinal center line L2 as in this embodiment, the insertion allowance on the second end 42 side is larger than the insertion allowance on the first end 41 side. If the insertion allowance on the second end 42 side is larger than the insertion allowance on the first end 41 side, it is possible to ensure a sufficient insertion depth of the second cable protection tube 100B into the second end 42 of the separator joint 1A in a state where the first end 41 is inserted into the first cable protection tube 100A.

[0026] As shown in FIG. 4 , the position of the protrusion 20 in the longitudinal direction of the joint main body 10 may be determined, for example, according to the length W2 between the first cable protection tube 100A and the second cable protection tube 100B. The length W2 between the first cable protection tube 100A and the second cable protection tube 100B is determined, for example, according to the joint 210 to be used. From the viewpoint of ensuring a reliable connection between the first cable protection tube 100A and the second cable protection tube 100B, it is preferable to ensure a sufficient insertion margin on the second end 42 side of the separator joint 1A into the second cable protection tube 100B. Therefore, as shown in FIG. 4 , it is preferable that the longitudinal length W1 on the second end 42 side of the protrusion 20 is sufficiently longer than the length W2 between the first cable protection tube 100A and the second cable protection tube 100B. With this configuration, a sufficient insertion length can be ensured for either of the two cable protection tubes 100 into which the separator joint 1A is inserted.

[0027] The first cable protection tube 100A and the second cable protection tube 100B connected as described above can be connected while ensuring continuity of the cross section between the separate portion 120 of the first cable protection tube 100A and the separate portion 120 of the second cable protection tube 100B by inserting the separator joint 1A between the separate portion 120 and the holding convex portion 130. The first cable protection tube 100A and the second cable protection tube 100B connected in this manner are linearly connected.

[0028] (Second embodiment) Fig. 5(A) shows a plan view of a separator joint 1B of the second embodiment, Fig. 5(B) shows a side view of the separator joint 1B of the second embodiment, and Fig. 5(C) shows the separator joint 1B of the second embodiment in a front view from the pipe axis direction (longitudinal direction). The separator joint 1B of this embodiment includes a joint body 10 and a hole 50 provided in the joint body 10.

[0029] The shape of the joint body 10 of the second embodiment is similar to the shape of the joint body 10 of the first embodiment, and therefore a description thereof will be omitted.

[0030] 5(A), the hole 50 is provided so as to penetrate from the first surface 30A to the second surface 30B of the joint main body 10. The hole 50 is configured so that when the separator joint 1B is inserted between the separate portion 120 of the cable protection tube 100 and the convex portion, the hole 50 can be connected to the separate portion 120 of the cable protection tube 100 by a penetrating member 60. The penetrating member 60 may be, for example, a bolt, a rivet, or the like.

[0031] In this embodiment, the holes 50 are provided in a pair at positions that are symmetrical with respect to the center line L1 in the short direction of the joint main body 10 at the first end 41 of the joint main body 10. The number of holes 50 is not limited to one. The number of holes 50 provided in the joint main body 10 may be one, or three or more. The position of the hole 50 provided in the joint main body 10 is not limited to the example shown in the figures, and the hole 50 may be provided in a separator joint flat portion 10A that is complementary to the flat portion 121A of the separator portion 120 when the joint main body 10 is disposed in the cable protection tube 100, for example.

[0032] Fig. 6(A) shows a side view of the state in which the first cable protection tube 100A and the second cable protection tube 100B are connected using the separator joint 1B, and Fig. 6(B) shows a plan view of the state in which the first cable protection tube 100A and the second cable protection tube 100B are connected using the separator joint 1B.

[0033] A procedure for connecting two cable protection tubes 100 (a first cable protection tube 100A and a second cable protection tube 100B) using the separator joint 1B of the second embodiment will be described. First, the first end 41 of the separator joint 1B is inserted between the separate portion 120 and the holding protrusion 130 of the first cable protection tube 100A. After the separator joint 1B is inserted into the first cable protection tube 100A to an appropriate depth, the separate portion 120 of the cable protection tube 100 is connected to the hole 50 using the penetration member 60. Next, the joint 210 is attached to the first cable protection tube 100A. Note that the structure of the attached joint 210 is not limited to the example shown in the figure, and it is sufficient that the joint 210 has a structure that covers the periphery of the connection portion between the first cable protection tube 100A and the second cable protection tube 100B to keep the internal space between the first cable protection tube 100A and the second cable protection tube 100B watertight. After the fitting 210 is attached to the first cable protection tube 100A into which the separator fitting 1B has been inserted as described above, the second end 42 of the separator fitting 1B connected to the first cable protection tube 100A is inserted between the separating portion 120 and the holding protrusion 130 of the second cable protection tube 100B.

[0034] As shown in FIG. 6 , the position of the hole 50 in the longitudinal direction of the joint main body 10 may be determined, for example, according to the length W2 between the first cable protection tube 100A and the second cable protection tube 100B. The length W2 between the first cable protection tube 100A and the second cable protection tube 100B is determined, for example, according to the joint 210 to be used. From the viewpoint of ensuring a reliable connection between the first cable protection tube 100A and the second cable protection tube 100B, it is preferable to ensure a sufficient insertion margin on the second end 42 side of the separator joint 1B into the second cable protection tube 100B. Therefore, as shown in FIG. 6 , it is preferable that the longitudinal length W3 on the second end 42 side of the hole 50 is sufficiently longer than the length W2 between the first cable protection tube 100A and the second cable protection tube 100B. With this configuration, a sufficient insertion length can be ensured for either of the two cable protection tubes 100 into which the separator joint 1B is inserted.

[0035] The first cable protection tube 100A and the second cable protection tube 100B connected as described above can be connected while ensuring continuity of the cross section between the separate portion 120 of the first cable protection tube 100A and the separate portion 120 of the second cable protection tube 100B by inserting the separator joint 1B between the separate portion 120 and the holding convex portion 130. Note that the first cable protection tube 100A and the second cable protection tube 100B connected in this manner are linearly connected.

[0036] (Third embodiment) Fig. 7(A) shows a plan view of a separator joint 1C of the third embodiment, Fig. 7(B) shows a side view of the separator joint 1C of the third embodiment, and Fig. 7(C) shows the separator joint 1C of the third embodiment in a front view from the pipe axis direction (longitudinal direction). The separator joint 1C of this embodiment includes a joint body 10 and a connecting member 70, and the joint body 10 has a first joint body 11 and a second joint body 12.

[0037] As shown in FIG. 7(C), the joint body 10 of this embodiment is plate-shaped and has a substantially V-shape that complementarily fits the second surface 30B of the separate part 120 when viewed from the front in the pipe axial direction (longitudinal direction). As shown in FIG. 7(A), the first joint body 11 and the second joint body 12 of this embodiment are pentagonal. In this embodiment, the joint body longitudinal length of the second joint body 12 is greater than the joint body longitudinal length of the first joint body 11. Note that the joint body longitudinal length of the first joint body 11 and the joint body longitudinal length of the second joint body 12 may be equal. With this configuration, the insertion allowance on the second end 42 side is greater than the insertion allowance on the first end 41 side. If the insertion allowance on the second end 42 side is larger than the insertion allowance on the first end 41 side, it is possible to ensure a sufficient insertion depth of the second cable protection tube 100B into the second end 42 of the separator joint 1C when the first end 41 is inserted into the first cable protection tube 100A. The shape of the joint body 10 is not limited to the above.

[0038] Each of the first joint main body 11 and the second joint main body 12 of this embodiment has a protrusion 20. The protrusion 20 is provided at a position overlapping with the holding protrusion 130 of the cable protection tube 100 when viewed from the tube axis O1 direction of the cable protection tube 100 when the separator joint 1C is disposed inside the cable protection tube 100. In the present embodiment, the protrusions 20 are provided on the second surface 30B of the joint main body 10. Of the corners of the joint main body 10 located on the separator joint inclined portion 10B that is complementary to the inclined portion 121B of the separator portion 120 when the separator joint 1C is placed in the cable protection tube 100, a pair of protrusions 20 are provided at the corners closest to the second end 42 in the first joint main body 11, and a pair of protrusions 20 are provided at the corners closest to the first end 41 in the second joint main body 12.

[0039] As shown in Fig. 7(C), the connecting member 70 has a connecting member main body 71 and a penetrating member 72. The connecting member main body 71 is disposed along the second surface 30B of the joint main body 10. As shown in Fig. 7(A), the connecting member main body 71 has a substantially rectangular shape in a plan view. The penetrating member 72 penetrates the connecting member main body 71 and the joint main body 10. The penetrating member 72 may be, for example, a bolt or a rivet. The connecting member 70 connects the first joint main body 11 and the second joint main body 12 so that they can move relative to each other. Specifically, as shown in FIG. 7(A) , the first joint main body 11 and the second joint main body 12 are connected by the connecting member 70 with a gap G therebetween. Therefore, by connecting the joint main body 10 with the connecting member main body 71 and the penetrating member 72, the angle of the second joint main body 12 relative to the first joint main body 11 in a plan view can be changed with the penetrating member 72 as a rotation axis.

[0040] FIG. 8(A) shows a plan view of a state in which the first cable protection tube 100A and the second cable protection tube 100B are connected using a separator joint 1C.

[0041] A procedure for connecting two cable protection tubes 100 (a first cable protection tube 100A and a second cable protection tube 100B) using the separator joint 1C of the third embodiment will be described. First, the first end 41 of the separator joint 1C is inserted between the separator portion 120 and the holding protrusion 130 of the first cable protection tube 100A. At this time, because the first joint main body portion 11 of the separator joint 1C of this embodiment has the protrusion 20, the depth to which the first end 41 of the separator joint 1C is inserted into the first cable protection tube 100A is restricted. Next, the joint 210 is attached to the first cable protection tube 100A. Note that the attached joint 210 may have a structure that can follow changes in the angle of the second cable protection tube 100B relative to the first cable protection tube 100A, and for example, a bendless joint can be suitably used. After the fitting 210 is attached to the first cable protection tube 100A into which the first fitting main body portion 11 of the separator fitting 1C has been inserted as described above, the second end portion 42 of the second fitting main body portion 12 of the separator fitting connected to the first cable protection tube 100A is inserted between the separate portion 120 and the retaining protrusion portion 130 of the second cable protection tube 100B.

[0042] FIG. 8(B) shows a plan view when the angle of the second cable protection tube 100B relative to the first cable protection tube 100A is changed. As described above, the separator joint 1C of this embodiment makes it possible to change the angle of the second joint main body 12 relative to the first joint main body 11 in a plan view. Therefore, the first cable protection tube 100A and the second cable protection tube 100B connected by the separator joint 1C of this embodiment make it possible to change the angle of the second cable protection tube 100B relative to the first cable protection tube 100A in a plan view.

[0043] Fig. 9(A) shows a partially enlarged side view of the separator joint 1C of this embodiment shown in Fig. 7(B). Fig. 9(B) shows a side cross-sectional view of a connection portion 80 between the joint main body 10 and the connecting member 70. 9(A) and 9(B), the connection portion 80 between the joint main body 10 and the connecting member 70 will be described in detail. Note that the connection portion 80 in the first joint main body 11 and the connection portion 80 in the second joint main body 12 have the same structure, and therefore only the connection portion 80 in the second joint main body 12 will be described below.

[0044] A separator joint flat surface portion 10A of a separator joint 1C of this embodiment is provided with a first through hole 81. Note that Fig. 9 shows a state in which the second joint body portion 12 of the separator joint 1C is arranged in a linear fashion relative to the first joint body portion 11 as a whole in a side view. In this case, the angle formed by the second joint body portion 12 relative to the first joint body portion 11 as a side view is 0°. The first through hole 81 has a circular shape in a plan view. A large diameter hole 81A is formed at the end of the first through hole 81 in the separator joint flat surface portion 10A of the second joint main body portion 12. The large diameter hole 81A is formed coaxially with the first through hole 81. For example, the large diameter hole 81A can be formed by countersinking the separator joint flat surface portion 10A.

[0045] The connecting member flat surface portion 71A, which is complementary to the separator joint flat surface portion 10A, is provided with a second through hole 82. The second through hole 82 has a circular shape in a plan view. The inner diameter of the second through hole 82 is smaller than the inner diameter of the first through hole 81.

[0046] The first through hole 81 and the second through hole 82 are arranged coaxially. A connecting pipe 83 is arranged in the first through hole 81. The connecting pipe 83 is formed in a tubular shape. The axial length of the connecting pipe 83 and the thickness of the separator joint flat surface portion 10A are approximately the same. One end of the connecting pipe 83 is arranged in the first through hole 81. That is, the outer diameter of the connecting pipe 83 is smaller than the inner diameter of the first through hole 81. The connecting pipe 83 is engaged with the separator joint flat surface portion 10A in the thickness direction of the separator joint flat surface portion 10A. The axial length of the connecting pipe 83 and the thickness of the separator joint flat surface portion 10A may be different. For example, the axial length of the connecting pipe 83 may be approximately the same as the axial length of the large diameter hole 81A, or the connecting pipe 83 may be arranged only in the large diameter hole 81A of the first through hole 81. In this case, the outer diameter of the connecting pipe 83 is larger than the inner diameter of the first through-hole 81 .

[0047] A rivet is provided as the penetrating member 72 that passes through the first through hole 81 and the second through hole 82. In this embodiment, the rivet is a blind rivet. The rivet includes a shank 72B, a first head 72A, and a second head 72C. The shaft portion 72B is formed in a cylindrical shape and is disposed within the second through-hole 82 and the connecting pipe 83. The first head portion 72A and the second head portion 72C are formed in a circular shape in a plan view. The diameters of the first head portion 72A and the second head portion 72C are larger than the diameter of the shaft portion 72B. The first head 72A is provided on the first end 72a of the shaft 72B. The first head 72A engages with the peripheral edge of the second through-hole 82 in the separator joint flat portion 10A from below this peripheral edge (from the opposite side to the separator joint 1C). The second head 72C is provided on a second end 72b of the shaft 72B, opposite the first end 72a. The first head 72A and the second head 72C are arranged coaxially with the shaft 72B. The second head 72C is engaged with the second end 72b of the connecting pipe 83 from above the second end 72b (from the opposite side to the first end 72a). The inner diameter of the large diameter hole 81A is larger than the outer diameter of the second head portion 72C. Although the connection portion 80 in this embodiment has the connection pipe 83, the connection portion 80 does not have to have the connection pipe 83. If the connection portion 80 does not have the connection pipe 83, a rivet is attached, for example, with a gap provided so as to allow relative movement of the second joint body portion 12 with respect to the first joint body portion 11 in the up and down direction, as will be described later.

[0048] Figure 10 shows a side cross-sectional view of the second joint body 12 when it moves downward relative to the first joint body 11. Figure 11 shows a side cross-sectional view of the second joint body 12 when it moves upward relative to the first joint body 11. Because the connection portion 80 between the joint main body 10 and the connecting member 70 has the configuration described above, the separator joint 1C of this embodiment makes it possible to change the angle of the second joint main body 12 relative to the first joint main body 11 in a side view, as shown in Figures 10 and 11. Therefore, the first cable protection tube 100A and the second cable protection tube 100B connected by the separator joint 1C of this embodiment make it possible to change the angle of the second cable protection tube 100B relative to the first cable protection tube 100A in a side view.

[0049] 9 to 11, the connecting member 70 of the separator joint 1C of this embodiment has a first inclined portion 71a and a second inclined portion 71b. As described above, the separator joint 1C allows the angle of the second joint body portion 12 relative to the first joint body portion 11 in a side view to be changed. In this case, because the connecting member 70 has the first inclined portion 71a and the second inclined portion 71b, the connecting member 70 allows the angle of the second joint body portion 12 relative to the first joint body portion 11 in a side view to be changed, as shown in FIGS.

[0050] As described above, the separator joint 1C of the third embodiment makes it possible to change the angle of the second joint main body 12 relative to the first joint main body 11 in a plan view, and also makes it possible to change the angle of the second joint main body 12 relative to the first joint main body 11 in a cross-sectional view. Therefore, the first cable protection tube 100A and the second cable protection tube 100B connected by the separator joint 1C of this embodiment make it possible to change the angle of the second cable protection tube 100B relative to the first cable protection tube 100A in a plan view, and also makes it possible to change the angle of the second cable protection tube 100B relative to the first cable protection tube 100A in a cross-sectional view.

[0051] The configuration of the connection portion 80 is not limited to the above. Although not shown, the connection portion 80 may have the following configuration, for example. A first through hole 81 is provided in the separator joint flat surface 10A, and a large diameter hole 81A is formed on the surface facing opposite to that in the above embodiment (the surface facing the connecting member flat surface 71A). A second through hole 82 is provided in the connecting member flat surface 71A. The inner diameter of the second through hole 82 is larger than the inner diameter of the first through hole 81 excluding the large diameter hole 81A. The first through hole 81 and the second through hole 82 are arranged coaxially. A connecting pipe 83 is arranged in the second through hole 82. The inner diameter of the large diameter hole 81A is larger than the outer diameter of the connecting pipe 83. One end of the connecting pipe is arranged in the second through hole 82, and the other end is arranged in the large diameter hole 81A. The connecting pipe 83 is engaged with the connecting member flat surface 71A in the thickness direction of the connecting member flat surface 71A. For example, the length of the connecting pipe 83 in the tube axis direction may be approximately the same as the length of the large diameter hole 81A in the tube axis direction, and the connecting pipe 83 may be disposed only in the large diameter hole 81A. In this case, the outer diameter of the connecting pipe 83 is larger than the inner diameter of the second through hole 82. Even with the above-described configuration, the connecting member 70 can allow the angle of the second joint body portion 12 relative to the first joint body portion 11 to be changed in a side view.

[0052] The above describes a separator joint 1C in which both the angle of the second joint body portion 12 relative to the first joint body portion 11 in a planar view and the angle of the second joint body portion 12 relative to the first joint body portion 11 in a cross-sectional view can be changed, but the separator joint 1C may have a configuration in which only one of the angle of the second joint body portion 12 relative to the first joint body portion 11 in a planar view or the angle of the second joint body portion 12 relative to the first joint body portion 11 in a cross-sectional view can be changed.

[0053] As described above, the cable protection tube 100 of the present disclosure comprises a tube main body 110, and a separate portion 120 and a holding protrusion 130 formed integrally with the tube main body 110, the separate portion 120 being arranged inside the tube main body 110 along the tube axis O1 and dividing the inside of the tube main body 110 into a first tube line PL1 and a second tube line PL2, and the holding protrusion 130 being arranged on the second tube line PL2 side of the separate portion 120 and protruding from the inner wall of the tube main body 110 radially inward of the tube main body 110. When connecting one-pipe separate type cable protection tubes 100 (first cable protection tube 100A, second cable protection tube 100B) having a first pipe PL1 and a second pipe PL2, it is preferable to connect the first pipe PL1 of the first cable protection tube 100A to the first pipe PL1 of the second cable protection tube 100B, and the second pipe PL2 of the first cable protection tube 100A to the second pipe PL2 of the second cable protection tube 100B while ensuring spatial continuity. For example, if the separate portion 120 of the first cable protection tube 100A and the separate portion 120 of the second cable protection tube 100B are connected with their cross sections misaligned, the spatial continuity of the first pipe PL1 and the second pipe PL2 may be impaired. With the above configuration, by inserting the separator joint 1 between the separate portion 120 and the holding protrusion 130 of the cable protection tube 100 (first cable protection tube 100A, second cable protection tube 100B), the separate portion 120 of the first cable protection tube 100A and the separate portion 120 of the second cable protection tube 100B can be connected while ensuring continuity of the cross section. Therefore, in cable protection tubes 100 having separate portions 120 integrated with the tube main body 110, it is possible to suppress misalignment of the cross section when connecting adjacent cable protection tubes 100.

[0054] The separator joint 1 of the present disclosure is used to connect cable protection tubes 100 together, and comprises a plate-shaped joint main body 10, the end of which is configured to be insertable between the separating portion 120 and the retaining protrusion 130 of the cable protection tube 100. With this configuration, for a cable protection tube 100 having a separate portion 120 and a holding protrusion 130, the end of the joint main body 10 is inserted between the separate portion 120 and the holding protrusion 130 of the cable protection tube 100 (first cable protection tube 100A, second cable protection tube 100B), thereby making it possible to connect the separate portion 120 of the first cable protection tube 100A and the separate portion 120 of the second cable protection tube 100B while ensuring continuity of the cross section. Therefore, in a cable protection tube 100 having a separate portion 120 integrated with the tube main body 110, it is possible to suppress misalignment of the cross section when connecting adjacent cable protection tubes 100.

[0055] In addition, the joint main body 10 further includes a protrusion 20, which is provided on the surface facing the second conduit PL2 of the cable protection tube 100 when the end of the joint main body 10 is inserted between the separate part 120 and the retaining protrusion 130 of the cable protection tube 100, and may be provided at a position overlapping with the retaining protrusion 130 of the cable protection tube 100 when viewed from the tube axis O1 direction of the cable protection tube 100. When connecting the cable protection tubes 100 (the first cable protection tube 100A and the second cable protection tube 100B), the connection can be made, for example, in the following procedure: After inserting the first end 41 of the separator joint 1 between the separating portion 120 and the holding convex portion 130 of the first cable protection tube 100A, the second end 42 of the separator joint 1 in a state connected to the first cable protection tube 100A is inserted between the separating portion 120 and the holding convex portion 130 of the second cable protection tube 100B. At this time, if the separator joint 1 is inserted too deeply into the first cable protection tube 100A, the exposed length of the second end 42 of the separator joint 1 will be insufficient, and it may be difficult to insert the second end 42 of the separator joint 1 between the separating portion 120 and the holding convex portion 130 of the second cable protection tube 100B. With the above configuration, the protrusion 20 restricts the depth to which the first end 41 of the separator joint 1 is inserted into the first cable protection tube 100A. This prevents the first end 41 of the separator joint 1 from being inserted excessively deep into the first cable protection tube 100A, and ensures a sufficient exposed length of the second end 42 of the separator joint 1. Therefore, in a cable protection tube 100 having a separating portion 120 integrated with the tube main body 110, when connecting adjacent cable protection tubes 100, it is possible to suppress misalignment of the cross section, and to provide a separator joint 1 with excellent workability.

[0056] The separator joint 1 may further include a hole 50 provided in the first end 41 of the joint main body 10, and the hole 50 may be configured to be connectable to the separate portion 120 of the cable protection tube 100 by the penetrating member 60 when the separator joint 1 is inserted between the separate portion 120 of the cable protection tube 100 and the retaining protrusion 130. With this configuration, by connecting the hole 50 provided in the first end 41 and the separate portion 120 of the first cable protection tube 100A with the penetrating member 60, the first end 41 of the separator joint 1 can be fixed to the separate portion 120 of the first cable protection tube 100A. This limits the depth to which the first end 41 of the separator joint 1 is inserted between the separate portion 120 and the holding convex portion 130 of the first cable protection tube 100A. This prevents the first end 41 side of the separator joint 1 from being inserted excessively deep into the first cable protection tube 100A, ensuring a sufficient exposed length of the second end 42 of the separator joint 1. Therefore, in a cable protection tube 100 having a separate portion 120 integrated with the tube main body 110, misalignment of the cross section can be suppressed when connecting adjacent cable protection tubes 100, and a separator joint 1 with excellent workability can be achieved.

[0057] The joint main body 10 includes a first joint main body 11 and a second joint main body 12, and may further include a connecting member 70 that connects the first joint main body 11 and the second joint main body 12, and the first joint main body 11 and the second joint main body 12 may be connected by the connecting member 70 so that they can move relative to each other. After the first cable protection tube 100A and the second cable protection tube 100B are connected, depending on the installation conditions of the cable protection tube 100, it may be necessary to change the angle of the second cable protection tube 100B relative to the first cable protection tube 100A. With the above configuration, the first joint main body 11 inserted into the first cable protection tube 100A and the second joint main body 12 connected to the second cable protection tube 100B are connected by the connecting member 70 so as to be relatively movable. Therefore, the separator joint 1 including the first joint main body 11 and the second joint main body 12 can change the angle of the second cable protection tube 100B relative to the first cable protection tube 100A. Therefore, in a cable protection tube 100 having a separator part 120 integrated with the tube main body 110, when connecting adjacent cable protection tubes 100, it is possible to suppress misalignment of the cross section, and a separator joint 1 with excellent workability can be obtained.

[0058] The cable protection tube connection portion 200 of the present disclosure includes a first cable protection tube 100A and a second cable protection tube 100B, which are cable protection tubes 100, and a separator joint 1 used to connect the first cable protection tube 100A and the second cable protection tube 100B, with a first end portion 41 of the separator joint 1 being positioned between the separating portion 120 and the holding protrusion 130 of the first cable protection tube 100A, and a second end portion 42 of the separator joint 1 being positioned between the separating portion 120 and the holding protrusion 130 of the second cable protection tube 100B. With the above configuration, by inserting the separator joint 1 between the separate portion 120 and the holding protrusion 130 of the cable protection tube 100 (first cable protection tube 100A, second cable protection tube 100B), the separate portion 120 of the first cable protection tube 100A and the separate portion 120 of the second cable protection tube 100B can be connected while ensuring continuity of the cross section. Therefore, in cable protection tubes 100 having separate portions 120 integrated with the tube main body 110, it is possible to suppress misalignment of the cross section when connecting adjacent cable protection tubes 100.

[0059] The above describes one embodiment of the present disclosure with reference to the drawings, but the specific configuration is not limited to this embodiment, and includes changes, combinations, deletions, etc. of the configuration within the scope that does not deviate from the gist of the present disclosure.

[0060] For example, the separator joint 1 does not have to have the protrusion 20. For example, the separator joint 1 does not have to have the hole 50. For example, the separator joint 1 may have both the protrusion 20 and the hole 50. For example, the separator part 120 does not have to be substantially V-shaped in cross section. [Explanation of symbols]

[0061] 200 Cable protection tube connection 100 Cable protection tube 100A 1st cable protection tube 100B Second cable protection tube 110 Tube body 120 Separate part 130 Retaining protrusion 1, 1A, 1B, 1C separator joint 10. Joint body 11 First joint body 12 Second joint body 20 protrusions 41 First end 42 Second end 50 holes 70 Connecting member PL1 1st pipeline PL2 2nd pipeline

Claims

1. A tube body; a separating portion and a holding protrusion formed integrally with the pipe body; Equipped with the separator is disposed inside the pipe body along the pipe axis and divides the inside of the pipe body into a first pipe line and a second pipe line; the retaining protrusion is disposed closer to the second pipe line than the separating portion and protrudes from the inner wall of the pipe body toward the inside in the radial direction of the pipe body. Cable protection tube.

2. A separator joint used to connect the cable protection tubes according to claim 1, A plate-shaped joint body is provided, an end portion of the joint main body is configured to be insertable between the separate portion and the holding protrusion of the cable protection tube; Separator fitting.

3. The joint body further includes a protrusion, the protrusion is provided on a surface of the cable protection tube facing the second conduit when the end of the joint main body is inserted between the separate portion and the holding convex portion of the cable protection tube, and is provided at a position overlapping with the holding convex portion of the cable protection tube when viewed from the tube axis direction of the cable protection tube. The separator joint of claim 2 .

4. a hole formed in the first end of the fitting body; the hole is configured to be connectable to the separation portion of the cable protection tube by a penetrating member when the separator joint is inserted between the separation portion of the cable protection tube and the holding protrusion. The separator joint of claim 2 .

5. The joint body includes a first joint body and a second joint body, a connecting member that connects the first joint body and the second joint body, The first joint body and the second joint body are connected by the connecting member so as to be movable relative to each other. The separator joint of claim 2 .

6. a first cable protection tube and a second cable protection tube which are the cable protection tubes according to claim 1; a separator joint used to connect the first cable protection tube and the second cable protection tube; Equipped with a first end of the separator joint is disposed between the separator portion and the holding protrusion of the first cable protection tube, a second end portion of the separator joint is disposed between the separating portion and the holding protrusion of the second cable protection tube; Cable protection tube connection part.

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