JP2020162232A - Cable protection tube - Google Patents

Abstract

To provide a cable protection tube in which the inner space and the upper space of a tube member are widely ensured.SOLUTION: A cable protection tube 1 includes a tube member 20 that has no projection formed on an inner circumferential surface thereof and extends along a horizontal plane, a separate part 26 that extends in a left-right direction in a cross section perpendicular to a center axis O of the tube member and that partitions an inner space S1 of the tube member into an upper space S2 and a lower space S3, and a rotation inhibiting part 35 that is disposed below the separate part in the inner space of the tube member and that inhibits the separate part from rotating about the center axis with respect to the tube member.SELECTED DRAWING: Figure 3

Description

The present invention relates to a cable protection tube.

Conventionally, a cable protection tube including a tube member, a separate portion, and a detent portion is known (see, for example, Patent Document 1).
The separate portion divides the internal space of the pipe member into an upper space and a lower space. Cables are placed in the upper or lower space, either directly or in the sheath tube.
The detent portion includes a protrusion formed on the inner peripheral surface of the pipe member and an inner bent portion formed on the separate portion. By engaging the inner bent portion with respect to the protrusion in the circumferential direction, the rotation of the separate portion with respect to the pipe member around the central axis of the pipe member is suppressed.

JP-A-2009-240003

However, in order to arrange more cables in the pipe member, it is desired to secure a wide internal space of the pipe member. Further, since the upper space communicates with the inside of the branch pipe used when branching the cable protection pipe, for example, it is desired to secure a wide upper space.

The present invention has been made in view of such problems, and an object of the present invention is to provide a cable protection tube in which the internal space and the upper space of the tube member are widely secured.

In order to solve the above problems, the present invention proposes the following means.
The cable protection tube of the present invention has a tube member that does not have a convex portion formed on the inner peripheral surface and extends along a horizontal plane, and a tube member that extends in the left-right direction in a cross section orthogonal to the central axis of the tube member and is inside the tube member. A separate portion that divides the space into an upper space and a lower space, and a detent portion that is arranged below the separate portion and prevents the separate portion from rotating around the central axis with respect to the pipe member. It is characterized by having.
According to the present invention, since the convex portion is not formed on the inner peripheral surface of the pipe member, the internal space of the pipe member is not narrowed due to the formation of the convex portion, and the internal space of the pipe member is widely secured. can do. Further, since the detent portion is arranged below the separate portion in the internal space of the pipe member, the upper space is not narrowed by the detent portion, and a wide upper space can be secured.

Further, in the cable protection tube, a pair of legs extending downward from both ends of the separate portion in the left-right direction along the inner peripheral surface of the tube member are provided, and the detent portion is the tube member. An opening formed on the inner peripheral surface and the pair of legs are provided, arranged in the opening, and locked in the circumferential direction of the pipe member with respect to the peripheral edge of the opening in the pipe member. It may have a protrusion and a protrusion.
According to the present invention, when the separate portion moves on a plane orthogonal to the central axis with respect to the pipe member, the separate portion with respect to the pipe member is moved along the inner peripheral surface of the pipe member by a pair of legs. You will be guided to move around the central axis. Further, the first protrusion arranged in the opening is locked in the circumferential direction with respect to the peripheral edge of the opening in the pipe member, that is, around the central axis, so that the separate portion is around the central axis with respect to the pipe member. It is possible to suppress the rotation to.

Further, in the cable protection tube, the detent portion may support the separate portion from below the separate portion and may come into contact with the inner peripheral surface of the tube member from above.
According to the present invention, the detent portion supported on the inner peripheral surface of the pipe member supports the separate portion. Therefore, the separate portion is supported for the pipe member via the detent portion, and it is possible to prevent the separate portion from rotating about the central axis with respect to the pipe member.

Further, in the cable protection tube, the detent portion may be provided with a detent portion that regulates the rotation of the separate portion around the central axis with respect to the detent portion.
According to the present invention, the regulation portion regulates the rotation of the separate portion around the central axis with respect to the detent portion supported on the inner peripheral surface of the pipe member. As a result, it is possible to more reliably suppress the rotation of the separate portion with respect to the pipe member about the central axis.

Further, in the cable protection tube, the detent portion may be formed with a through hole that penetrates the detent portion in a direction along the central axis.
According to the present invention, the cable or sheath can be easily arranged in the space under the pipe member through the through hole of the detent portion.

Further, in the cable protection tube, the detent portion fixes the support member that supports the separate portion from below the separate portion and the support member to the end surface of the tube member in the direction along the central axis. It may have a fixing member.
According to the present invention, by supporting the separate portion with a support member fixed to the pipe member by the fixing member, it is possible to prevent the separate portion from rotating about the central axis with respect to the pipe member.

Further, in the cable protection tube, the detent portion is connected to the separate portion, and an extension member arranged outside the tube member and an end surface of the extension member in a direction along the central axis of the tube member. It may have a fixing member fixed to the.
According to the present invention, since the extension member is arranged outside the pipe member and fixed to the end face in the direction along the central axis of the pipe member by the fixing member, the extension member can be extended even if the extension member is connected to the separate portion. The member is not placed in the internal space of the pipe member. As a result, the internal space and the upper space of the pipe member can be widely secured.
Further, since the extension member connected to the separate portion is fixed to the pipe member by the fixing member, it is possible to prevent the separate portion from rotating about the central axis with respect to the pipe member.

Further, in the cable protection tube, a pair of legs extending downward from both ends of the separate portion in the left-right direction along the inner peripheral surface of the tube member are provided, and the detent portion is the tube member. It may have a holding member fixed to the inner peripheral surface and a locking portion formed on the pair of legs and locking to the holding member in the circumferential direction.
According to the present invention, the locking portion formed on the pair of legs extending from the separate portion is locked in the circumferential direction with respect to the holding member fixed to the pipe member, whereby the separate portion is formed with respect to the pipe member. It is possible to suppress rotation around the central axis.

Further, in the cable protection tube, a pair of legs extending downward from both ends of the separate portion in the left-right direction along the inner peripheral surface of the tube member are provided, and the detent portion is provided on the central axis. It has a support member that has an arc shape that opens upward when viewed in the direction along the line, and a fixing member that fixes the support member to the pipe member, and both ends of the support member are the pair of legs. The separate portion may be supported from below by being arranged inside the pipe member in the radial direction with respect to the pipe member, and the pair of legs may be sandwiched in the radial direction together with the pipe member at both ends.
According to the present invention, by supporting the separate portion at both ends of the support member fixed to the pipe member by the fixing member, it is possible to prevent the separate portion from rotating about the central axis with respect to the pipe member. .. At this time, by sandwiching the pair of legs in the radial direction together with the tube members at both ends of the support member, it is possible to prevent the pair of legs from being displaced in the circumferential direction with respect to both ends of the support member.

Further, in the cable protection tube, the support member has an arcuate shape that opens upward when viewed in a direction along the central axis, and a direction in which the support member is separated from the main body from the circumferential end of the main body. However, an extension member that extends in a direction in contact with the end portion of the main body and supports the separate portion from below may be provided.
According to the present invention, the leg portion can be more reliably sandwiched between the extension member and the pipe member.

Further, in the cable protection pipe, the pipe member has a first straight pipe portion and a second straight pipe portion where the central axes intersect with each other, and the first straight pipe portion has the fixing member inside. Is formed, and the through hole is on the first reference plane including the central axis of the first straight pipe portion and the central axis of the second straight pipe portion, or orthogonal to the first reference plane. It may be arranged on the second reference plane including the central axis of the first straight pipe portion.
According to the present invention, the pipe member has a folded shape on the first reference plane. The holding portion formed on the first straight pipe portion is arranged on the first reference plane or on the second reference plane orthogonal to the first reference plane. Therefore, the direction in which the pipe member is broken can be easily recognized from the position where the holding portion is arranged.

According to the cable protection tube of the present invention, a wide internal space and an upper space of the tube member can be secured.

It is a perspective view which cut through a part of the cable protection pipe line which uses the cable protection pipe of 1st Embodiment of this invention. It is a perspective view of the end of the cable protection tube. It is a front view of the cable protection tube. It is sectional drawing of the cutting line A1-A1 in FIG. It is an enlarged view of B1 part in FIG. It is a perspective view of the end part of the cable protection tube in the modification of 1st Embodiment of this invention. It is a front view of the cable protection tube. It is sectional drawing of the cutting line A2-A2 in FIG. It is the B2 part enlarged view in FIG. It is a perspective view of the end part of the cable protection tube of the 2nd Embodiment of this invention. It is a front view of the cable protection tube. It is sectional drawing of the cutting line A3-A3 in FIG. It is a perspective view of the separator and the detent part of the cable protection tube. It is a perspective view of the end part of the cable protection tube of the 3rd Embodiment of this invention. It is a front view of the cable protection tube. It is sectional drawing of the cutting line A4-A4 in FIG. It is an enlarged view of the B3 part in FIG. It is a perspective view of the separator and the detent part of the cable protection tube. It is a perspective view of the end part of the cable protection tube in the modification of the 3rd Embodiment of this invention. It is a front view of the cable protection tube. It is sectional drawing of the cutting line A5-A5 in FIG. It is a perspective view of the separator and the detent part of the cable protection tube. It is a perspective view of the end part of the cable protection tube of 4th Embodiment of this invention. It is a front view of the cable protection tube. It is sectional drawing of the cutting line A6-A6 in FIG. It is a perspective view of the separator and the detent part of the cable protection tube. It is a perspective view of the end of the cable protection tube of the 5th Embodiment of this invention. It is a front view of the cable protection tube. It is sectional drawing of the cutting line A7-A7 in FIG. 28. It is a perspective view of the separator and the detent part of the cable protection tube. It is a perspective view of the end part of the cable protection tube of the 6th Embodiment of this invention. It is a front view of the cable protection tube. It is sectional drawing of the cutting line A8-A8 in FIG. It is a perspective view of the separator and the holding member of the cable protection tube. It is a front view which a part of the cable protection tube of 7th Embodiment of this invention was broken. It is a vertical sectional view of the support member of the cable protection tube. It is a front view which a part of the cable protection tube in the modified example of 7th Embodiment of this invention was broken. It is a vertical cross-sectional view which shows typically the cable protection tube of 8th Embodiment of this invention. It is a vertical sectional view of the tube member of the cable protection tube. It is sectional drawing of the cutting line A9-A9 in FIG. 38. It is a perspective view which a part of the cable protection tube was broken.

(First Embodiment)
Hereinafter, the first embodiment of the cable protection tube according to the present invention will be described with reference to FIGS. 1 to 9.
As shown in FIG. 1, the cable protection pipe 1 of the present embodiment is used to install the cable 200 in the underground 205 for landscape protection by eliminating utility poles. The cable protection tube 1 is used in a one-tube separate system. The cable protection pipe line 2 is composed of a plurality of cable protection pipes 1.

As shown in FIGS. 2 to 5, the cable protection pipe 1 includes a pipe member 20 extending along a horizontal plane, a separator 25 for partitioning the internal space S1 of the pipe member 20, and a separator 25 for the pipe member 20 (described later). A detent portion 35 that prevents the separate portion 26) from rotating around the central axis O of the pipe member 20 is provided. In addition, in FIG. 2 and below, the cable 200 and the sheath tube 201 described later are not shown.

The tube member 20 is formed of a resin such as vinyl chloride in a circular tubular shape. The inner peripheral surface of the pipe member 20 is not formed with a convex portion protruding inward in the radial direction (hereinafter, simply referred to as the radial direction) of the pipe member 20 from the inner peripheral surface. The convex portion referred to here means, for example, a shape having an outer diameter of 0.3 mm or more and protruding by 0.3 mm or more. The convex portion does not include, for example, one having a maximum height Rz of the surface roughness of the inner peripheral surface of less than 300 μm (0.3 mm).
On the other hand, as shown in FIGS. 3 and 5, a groove (opening) 21 is formed on the inner peripheral surface of the pipe member 20. The groove 21 opens inward in the radial direction. The groove 21 does not reach the outer peripheral surface of the pipe member 20. The groove 21 extends in a direction along the central axis O (hereinafter, abbreviated as the axial direction) and is formed over the entire length of the pipe member 20. A pair of grooves 21 are formed with the central axis O interposed therebetween.

The ratio of the total opening area of one or more grooves 21 formed in the pipe member 20 to the inner peripheral surface of the pipe member 20 is 30% or less. When this ratio is large to some extent, the shape is substantially the same as that of the convex portion formed on the inner peripheral surface of the pipe member 20.
This ratio is more preferably 10% or less.

In the portion other than the groove 21, the inner peripheral surface of the pipe member 20 has a circular shape in a cross section orthogonal to the central axis O of the pipe member 20 (hereinafter, simply referred to as a cross-sectional view).
As shown in FIGS. 2 to 5, in this example, a reduced diameter portion 22 is formed at the end of the pipe member 20 over the entire circumference. The outer diameter of the reduced diameter portion 22 becomes smaller toward the end of the pipe member 20 in the direction along the central axis O (hereinafter, abbreviated as the axial direction).

The separator 25 includes a separate portion 26 extending in the left-right direction in a cross-sectional view, and a pair of leg portions 27 extending downward along the inner peripheral surface of the pipe member 20 from both ends of the separate portion 26 in the left-right direction. There is.
The separate portion 26 divides the internal space S1 of the pipe member 20 into an upper space S2 located relatively upward and a lower space S3 located relatively downward. The separate portion 26 is a pair of inclined pieces 30 that are gradually inclined downward from each end of the separate portion 26 in the left-right direction toward the center in the left-right direction, and a horizontal piece 31 that connects the pair of inclined pieces 30 to each other. And have. The narrow angle formed by the inclined piece 30 with respect to the horizontal plane in cross-sectional view is, for example, 15 ° or more and 30 ° or less, and is appropriately set.
The horizontal piece 31 extends along a horizontal plane and connects the inner ends of the pair of inclined pieces 30 in the left-right direction.

The upper space S2 is a so-called shared FA effective space. As shown in FIG. 1, a plurality of cables 200 that are not housed in the sheath tube 201 or the like are housed in the upper space S2. A plurality of cables 200 housed in the sheath tube 201 are housed in the lower space S3.

As shown in FIG. 2, the lower ends of the pair of legs 27 are arranged so as to sandwich the central axis O. The leg portion 27 is formed over the entire length of the separate portion 26 in the axial direction.
As shown in FIGS. 3 and 5, a protrusion 33 protruding outward in the radial direction is provided at the lower end of each leg 27. The length of the protrusion 33 protruding is about the depth of the groove 21 of the pipe member 20.
A pair of protrusions 33 and a pair of grooves 21 of the pipe member 20 form a detent portion 35.
The separator 25 may not be provided with the pair of legs 27, and the protrusions 33 may be provided at the outer ends of the inclined pieces 30 of the separate portions 26 in the left-right direction.

The protrusions 33 are arranged over the entire length of the legs 27 in the axial direction. The protrusion 33 is arranged in the groove 21 of the pipe member 20. The protrusion 33 is locked in the circumferential direction with respect to the peripheral edge of the groove 21 in the pipe member 20. The groove 21 and the protrusion 33 are arranged below the separate portion 26 in the internal space S1. In other words, the portion of the groove 21 and the protrusion 33 that is arranged in the internal space S1 is arranged below the separate portion 26.
When the groove 21 referred to here is arranged below the separate portion 26, any part of the separate portion 26 is arranged at a position facing upward from the arbitrary portion of the groove 21. It means that it is. When the separate portion 26 is not arranged at a position facing upward from an arbitrary portion of the groove 21, the portion of the separate portion 26 arranged at the position closest to the portion in the left-right direction is the portion of the groove 21. It means that it is placed above.
The same applies to the meaning that the protrusion 33 is arranged below the separate portion 26.

The separate portions 26, the pair of leg portions 27, and the pair of protrusions 33 constituting the separator 25 are integrally formed of a resin such as vinyl chloride.
The separator 25 is arranged over the entire length of the pipe member 20.

As described above, according to the cable protection tube 1 of the present embodiment, since the convex portion is not formed on the inner peripheral surface of the tube member 20, the convex portion is formed and the internal space S1 of the tube member 20 is formed. Is not narrowed, and the internal space S1 of the pipe member 20 can be secured widely. Further, since the detent portion 35 is arranged below the separate portion 26 in the internal space S1 of the pipe member 20, the upper space S2 is not narrowed by the detent portion 35, and the upper space S2 is secured widely. Can be done.
When the separate portion 26 with respect to the pipe member 20 moves on a plane orthogonal to the central axis O, the pair of leg portions 27 causes the separate portion 26 to move along the inner peripheral surface of the pipe member 20 with respect to the pipe member 20. , Guided to move around the central axis O. Further, the detent portion 35 is provided with a groove 21 and a protrusion 33. The protrusion 33 arranged in the groove 21 engages with the peripheral portion of the groove 21 in the pipe member 20 in the circumferential direction, that is, around the central axis O so as to be separated from the pipe member 20. It is possible to suppress the 26 from rotating around the central axis O.

In addition, like the cable protection tube 1A of the modified example of the present embodiment shown in FIGS. 6 to 9, a slit (opening) 21A and a separator 25A are provided instead of the groove 21 and the separator 25 of the cable protection tube 1. May be good.
The slit 21A is formed on the inner peripheral surface of the pipe member 20A and penetrates the peripheral wall portion of the pipe member 20A in the radial direction. The slit 21A is formed over a predetermined range in the axial direction from the first end in the axial direction of the pipe member 20A. A pair of slits 21A are formed with the central axis O interposed therebetween.

The separator 25A includes a protrusion 33A and a leg extension piece 27A instead of the protrusion 33 of the separator 25. The protrusion 33A is provided at the lower end of each leg 27 so as to project outward in the radial direction. The length of the protrusion 33A protruding from the leg portion 27 is about the thickness of the peripheral wall portion of the pipe member 20A (see FIG. 9). A pair of protrusions 33A and a pair of slits 21A of the pipe member 20A form a detent portion 35A.
The protrusion 33A is formed from one end of the leg portion 27 in the axial direction over a predetermined range in the axial direction. The protrusion 33A is arranged in the slit 21A.
The leg extension piece 27A is formed in a range in which the protrusion 33A is not formed in the axial direction of the leg portion 27. The leg extension piece 27A extends downward from the lower end of the leg portion 27 along the inner peripheral surface of the pipe member 20A.

The cable protection tube 1A of the modified example configured in this way can also achieve the same effect as the cable protection tube 1 of the present embodiment.

(Second Embodiment)
Next, the second embodiment of the present invention will be described with reference to FIGS. 10 to 13, but the same parts as those in the embodiment are designated by the same reference numerals, the description thereof will be omitted, and only the differences will be described. explain.
As shown in FIGS. 10 to 13, in the cable protection pipe 3 of the present embodiment, the pipe member 20B, the separator 40 for partitioning the internal space S1 of the pipe member 20B, and the separator 40 with respect to the pipe member 20B are the central axes. It is provided with a detent portion 45 that suppresses rotation around O.

The pipe member 20B does not have a pair of grooves 21 formed in the pipe member 20.
The separator 40 includes the separate portion 26 and the connecting portion 41. The connecting portion 41 has an arc shape that opens downward when viewed in the axial direction. The connecting portion 41 is curved along the inner peripheral surface of the pipe member 20B. The connecting portion 41 is arranged above the separate portion 26, and each end of the connecting portion 41 in the left-right direction is connected to each end of the separate portion 26 in the left-right direction.
The separator 40 is arranged over the entire length of the pipe member 20B.

The detent portion 45 is a so-called cap, and includes a pair of inclined pieces 46, a horizontal piece 47, a connecting portion 48, and a flange 49.
The pair of inclined pieces 46 are inclined gradually downward from the outside in the left-right direction toward the center in the left-right direction. The pair of inclined pieces 46 are formed in a shape substantially equivalent to that of the pair of inclined pieces 30 of the separate portion 26. The horizontal piece 47 extends along a horizontal plane and connects the inner ends of the pair of inclined pieces 46 in the left-right direction. The horizontal piece 47 is formed in a shape substantially equivalent to that of the horizontal piece 31 of the separate portion 26.

The connecting portion 48 has an arc shape that opens upward when viewed in the axial direction. The connecting portion 48 is curved along the inner peripheral surface of the pipe member 20B. Each end of the connecting portion 48 in the left-right direction is connected to each end of the pair of inclined pieces 46 in the left-right direction.
The connecting portion 48 and the horizontal piece 47 are separated from each other in the vertical direction. That is, the detent portion 45 is formed with a through hole 45a that penetrates the detent portion 45 in the axial direction.
The flange 49 projects radially outward from the axial end of the connecting portion 48. The flange 49 is formed over the entire length of the connecting portion 48 in the circumferential direction.

The pair of inclined pieces 46 support the pair of inclined pieces 30 of the separate portion 26 from below the pair of inclined pieces 30. The horizontal piece 47 supports the horizontal piece 31 of the separate portion 26 from below the horizontal piece 31. In this way, the detent portion 45 supports the separate portion 26 from below the separate portion 26. The detent portion 45 is arranged below the separate portion 26 in the internal space S1.
The connecting portion 48 is in contact with the inner peripheral surface of the pipe member 20B from above the inner peripheral surface. The flange 49 is in contact with the axial end face of the pipe member 20B. In this example, the detent portion 45 is arranged at the axial end of the pipe member 20B.
The separator 40 and the detent portion 45 may be fixed to the inner peripheral surface of the pipe member 20B by using an adhesive.

As described above, according to the cable protection tube 3 of the present embodiment, the detent portion 45 supported on the inner peripheral surface of the tube member 20B supports the separate portion 26. Therefore, the separate portion 26 is supported with respect to the pipe member 20B via the detent portion 45, and it is possible to prevent the separate portion 26 from rotating about the central axis O with respect to the pipe member 20B.
Further, a through hole 45a is formed in the detent portion 45. As a result, the cable 200 and the sheath pipe 201 can be easily arranged in the lower space S3 of the pipe member 20B through the through hole 45a of the detent portion 45.

(Third Embodiment)
Next, the third embodiment of the present invention will be described with reference to FIGS. 14 to 18, but the same parts as those of the embodiment are designated by the same reference numerals, the description thereof will be omitted, and only the differences will be described. explain.
As shown in FIGS. 14 to 16, in the cable protection pipe 4 of the present embodiment, the pipe member 20B, the separator 25B for partitioning the internal space S1 of the pipe member 20B, and the separator 25B with respect to the pipe member 20B are the central axes. It is provided with a detent portion 55 that suppresses rotation around O.
As shown in FIGS. 15 and 18, the separator 25B does not have a pair of protrusions 33 with respect to the separator 25. In this example, the lower end of the leg portion 27 extends below the central axis O in the vertical direction.

The detent portion 55 is a so-called sheath pipe fixing plate, and is arranged below the separate portion 26 in the internal space S1. The detent portion 55 includes a stopper plate 56 and a flange 57.
The stop plate 56 is formed in a plate shape whose axial direction is the thickness direction. The stopper plate 56 has a semicircular shape with a notched upper portion when viewed in the axial direction. The outer diameter of the stop plate 56 is smaller than the inner diameter of the pipe member 20B.
The upper part of the stop plate 56 is cut out in a shape corresponding to the separate portion 26. Specifically, on the upper part of the stop plate 56, a pair of inclined surfaces 56a that are gradually inclined downward from the outside in the left-right direction toward the center in the left-right direction, and a pair of inclined surfaces that extend along the horizontal plane and are inclined. A flat surface 56b that connects the inner ends of the surface 56a in the left-right direction is formed.
The stop plate 56 is formed with through holes 56c and 56d that penetrate the stop plate 56 in the axial direction. The through hole 56d has a larger inner diameter than the through hole 56c. The through holes 56c and 56d are holes for aligning the sheath pipe 201 at a predetermined position.

The flange 57 has an arc shape that opens upward when viewed in the axial direction. The flange 57 is curved along the inner peripheral surface of the pipe member 20B. The flange 57 is arranged at an intermediate portion in the circumferential direction of the pipe member 20B on the outer peripheral surface other than the pair of inclined surfaces 56a and the flat surface 56b of the stop plate 56. The flange 57 projects outward from the stop plate 56 in the axial direction of the pipe member 20B.

As shown in FIG. 15, the pair of inclined surfaces 56a of the stop plate 56 support the pair of inclined pieces 30 of the separate portion 26 from below the pair of inclined pieces 30. The flat surface 56b of the stop plate 56 supports the horizontal piece 31 of the separate portion 26 from below the horizontal piece 31. In this way, the stop plate 56 of the detent portion 55 supports the separate portion 26 from below the separate portion 26.
The flange 57 is in contact with the inner peripheral surface of the pipe member 20B from above the inner peripheral surface. As shown in FIG. 17, a gap S6 is formed between the outer peripheral surface of the stop plate 56 on which the flange 57 is not arranged and the inner peripheral surface of the pipe member 20B. The legs 27 of the separator 25B are arranged in the gap S6. The circumferential end face of the flange 57 functions as a regulating portion 57a that regulates the rotation of the separate portion 26 about the central axis O with respect to the detent portion 55.
The separator 25B and the detent portion 55 may be fixed to the inner peripheral surface of the pipe member 20B by using an adhesive.

As described above, according to the cable protection tube 4 of the present embodiment, the detent portion 55 supported on the inner peripheral surface of the tube member 20B supports the separate portion 26. Therefore, the separate portion 26 is supported with respect to the pipe member 20B via the detent portion 55, and it is possible to prevent the separate portion 26 from rotating about the central axis O with respect to the pipe member 20B.
The detent portion 55 includes a regulation portion 57a. As a result, the regulating portion 57a regulates the rotation of the separate portion 26 around the central axis O with respect to the detent portion 55 supported on the inner peripheral surface of the pipe member 20B. Therefore, it is possible to more reliably suppress the rotation of the separate portion 26 with respect to the pipe member 20B about the central axis O.

In addition, like the cable protection tube 4A of the modified example of the present embodiment shown in FIGS. 19 to 22, the separator 40 and the detent portion 55A are provided in place of the separator 25B and the detent portion 55 of the cable protection tube 4. You may.
In the detent portion 55A, the flange 57 of the detent portion 55 is arranged over the entire outer peripheral surface of the stop plate 56 except for the pair of inclined surfaces 56a and the flat surface 56b.
The detent portion 55A supports the separate portion 26 from below the separate portion 26. The detent portion 55A is arranged below the separate portion 26 in the internal space S1. The flange 57 of the detent portion 55A is in contact with the inner peripheral surface of the pipe member 20B from above the inner peripheral surface.
The cable protection tube 4A of the modified example configured in this way can also achieve the same effect as the cable protection tube 4 of the present embodiment.

(Fourth Embodiment)
Next, the fourth embodiment of the present invention will be described with reference to FIGS. 23 to 26, but the same parts as those in the embodiment are designated by the same reference numerals, the description thereof will be omitted, and only the differences will be described. explain.
As shown in FIGS. 23 to 25, in the cable protection pipe 5 of the present embodiment, the pipe member 20B, the separator 25C for partitioning the internal space S1 of the pipe member 20B, and the separator 25C with respect to the pipe member 20B are central axes. It is provided with a detent portion 60 that suppresses rotation around O.

As shown in FIG. 26, the separator 25C has a separate portion 26 projecting to one side in the axial direction with respect to the pair of leg portions 27 in the separator 25B. Here, the portion of the separate portion 26 arranged at a position corresponding to the pair of leg portions 27 in the axial direction is referred to as a first separate piece 26A. The portion of the separate portion 26 that protrudes to one side in the axial direction with respect to the pair of leg portions 27 in the axial direction is referred to as a second separate piece 26B.

As shown in FIGS. 23 to 26, the detent portion 60 includes a support member 61 and a screw (fixing member) 62.
As shown in FIG. 26, the support member 61 is configured by laminating a large-diameter plate 65 and a small-diameter plate 66 in the axial direction. The large-diameter plate 65 and the small-diameter plate 66 are formed in a plate shape whose axial direction is the thickness direction. The outer diameter of the large diameter plate 65 and the outer diameter of the pipe member 20B are the same as each other. The outer diameter of the small diameter plate 66 and the inner diameter of the pipe member 20B are equal to each other. The large-diameter plate 65 and the small-diameter plate 66 are arranged coaxially with each other. The upper portion of the support member 61 is cut out in a shape corresponding to the separate portion 26. Specifically, on the upper part of the support member 61, a pair of inclined surfaces 61a that are gradually inclined downward from the outside in the left-right direction toward the center in the left-right direction, and a pair of inclined surfaces that extend along the horizontal plane and are inclined. A flat surface 61b that connects the inner ends of the surface 61a in the left-right direction is formed.

The support member 61 is formed with through holes 61c and 61d that penetrate the support member 61 in the axial direction. The through hole 61d has a larger inner diameter than the through hole 61c. The through holes 61c and 61d are holes for aligning the sheath pipe 201 at a predetermined position.
An insertion hole (reference numeral omitted) for passing the screw 62 is formed in a portion of the support member 61 in which the large-diameter plate 65 projects outward in the radial direction from the small-diameter plate 66.

As shown in FIG. 25, in the support member 61, the small diameter plate 66 is arranged in the internal space S1 of the pipe member 20B, and the large diameter plate 65 is arranged so as to come into contact with the axial end surface of the pipe member 20B.
As shown in FIGS. 24 and 25, the pair of inclined surfaces 61a of the support member 61 support the pair of inclined pieces 30 in the second separate piece 26B of the separate portion 26 from below the pair of inclined pieces 30. .. The flat surface 61b of the support member 61 supports the pair of inclined pieces 30 in the second separate piece 26B of the separate portion 26 from below the pair of inclined pieces 30. In this way, the support member 61 supports the second separate piece 26B of the separate portion 26 from below the second separate piece 26B.
The screw 62 is passed through the insertion hole of the support member 61 and screwed into the axial end surface of the pipe member 20B. In this way, the support member 61 is fixed to the axial end face of the pipe member 20B by the screw 62. The detent portion 60 is arranged below the separate portion 26 in the internal space S1.

As described above, according to the cable protection pipe 5 of the present embodiment, the separate portion 26 is supported with respect to the pipe member 20B by supporting the separate portion 26 with the support member 61 fixed to the pipe member 20B by the screw 62. Can be suppressed from rotating around the central axis O.

(Fifth Embodiment)
Next, the fifth embodiment of the present invention will be described with reference to FIGS. 27 to 30, but the same parts as those in the embodiment are designated by the same reference numerals, the description thereof will be omitted, and only the differences will be described. explain.
As shown in FIGS. 27 to 30, in the cable protection pipe 6 of the present embodiment, the pipe member 20B, the separator 70 for partitioning the internal space S1 of the pipe member 20B, and the separator 70 with respect to the pipe member 20B are the central axes. It is provided with a detent portion 75 that suppresses rotation around O.

The separator 70 includes an extension member 71 in addition to each configuration of the separator 25B. The extension member 71 is formed in a plate shape whose axial direction is the thickness direction. When the extension member 71 is viewed in the axial direction, the extension member 71 has an arc shape that overlaps the peripheral wall portion of the pipe member 20B (see FIG. 28). The extension member 71 is connected to the axial end of the leg portion 27. The extension member 71 is connected to the separate portion 26 via the leg portion 27. The extension member 71 is arranged outside the pipe member 20B. The extension member 71 is in contact with the axial end surface of the pipe member 20B. The extension member 71 is formed with an insertion hole 71a for passing the screw 62 (see FIG. 30). The screw 62 and the pair of extension members 71 form the detent portion 75. The detent portion 75 is arranged below the separate portion 26 in the internal space S1. In this example, the detent portion 75 is not arranged in the internal space S1.

The screw 62 is passed through the insertion hole 71a of the extension member 71 and screwed into the axial end surface of the pipe member 20B. In this way, the extension member 71 is fixed to the axial end face of the pipe member 20B by the screw 62.

As described above, according to the cable protection tube 6 of the present embodiment, the extension member 71 is arranged outside the tube member 20B and is fixed to the axial end surface of the tube member 20B by the screw 62, so that the extension member 71 is separated. Even if the extension member 71 is connected to the portion 26, the extension member 71 is not arranged in the internal space S1 of the pipe member 20B. As a result, the internal space S1 and the upper space S2 of the pipe member 20B can be widely secured.
Further, by fixing the extension member 71 connected to the separate portion 26 to the pipe member 20B by the screw 62, it is possible to prevent the separate portion 26 from rotating about the central axis O with respect to the pipe member 20B.

(Sixth Embodiment)
Next, the sixth embodiment of the present invention will be described with reference to FIGS. 31 to 34, but the same parts as those of the embodiment are designated by the same reference numerals, the description thereof will be omitted, and only the differences will be described. explain.
As shown in FIGS. 31 to 34, in the cable protection pipe 7 of the present embodiment, the pipe member 20B, the separator 25D for partitioning the internal space S1 of the pipe member 20B, and the separator 25D with respect to the pipe member 20B are central axes. It is provided with a detent portion 80 that suppresses rotation around O.

A holding member 85 is fixed to the inner peripheral surface of the pipe member 20B with an adhesive or the like. The holding member 85 extends along the axial direction. In the present embodiment, the cable protection tube 7 includes a pair of holding members 85. The pair of holding members 85 are arranged so as to sandwich the central axis O in the left-right direction.

In the separator 25D, in addition to each configuration of the separator 25B, a recessed portion (locking portion) 27a is formed in a pair of leg portions 27. The pair of sunken portions 27a and the pair of holding members 85 form a detent portion 80.
The sunken portion 27a is a portion recessed from the outer outer surface of the leg portion 27 in the left-right direction toward the inside in the left-right direction. A holding member 85 is arranged in the recessed portion 27a. The recessed portion 27a is locked to the holding member 85 in the circumferential direction. The detent portion 80 is arranged below the separate portion 26 in the internal space S1.

As described above, according to the cable protection tube 7 of the present embodiment, the recessed portion 27a formed on the pair of leg portions 27 extending from the separate portion 26 is peripheral to the holding member 85 fixed to the pipe member 20B. By locking in the direction, it is possible to prevent the separate portion 26 from rotating about the central axis O with respect to the pipe member 20B.
The locking portion is not limited to the recessed portion 27a, and may be an end opposite to the end connected to the inclined piece 30 in the leg portion 27. Even in this case, for example, by arranging the ends of the legs 27 so as to come into contact with the holding member 85 from above the holding member 85, the ends of the legs 27 are arranged in the circumferential direction (downward) with respect to the holding member 85. ) Can be locked.

(7th Embodiment)
Next, the seventh embodiment of the present invention will be described with reference to FIGS. 35 to 37, but the same parts as those of the embodiment are designated by the same reference numerals, the description thereof will be omitted, and only the differences will be described. explain.
As shown in FIG. 35, in the cable protection pipe 8 of the present embodiment, the pipe member 20C, the separator 25B for partitioning the internal space S1 of the pipe member 20C, and the separator 25B with respect to the pipe member 20C are arranged around the central axis O. It is provided with a detent portion 95 that suppresses rotation.

A through hole (holding portion) 90 is formed in the pipe member 20C instead of the groove 21 of the pipe member 20. Although not shown in detail, in the through hole 90, the inner diameter of the large diameter portion arranged on the outer side in the radial direction is larger than the inner diameter of the small diameter portion arranged on the inner side in the radial direction. In the through hole 90, a step portion is formed at a boundary portion between the large diameter portion and the small diameter portion.
In this example, the branch pipe 92 is connected to the pipe member 20C. The internal space of the branch pipe 92 communicates with the upper space S2 of the pipe member 20C.

The detent portion 95 includes a support member 96 and a rivet (fixing member) 97.
The support member 96 has an arc shape that opens upward when viewed in the axial direction. As shown in FIG. 36, the support member 96 has a long rectangular shape in the vertical direction in a vertical cross-sectional view. A through hole 96a is formed at the center of the support member 96 in the circumferential direction.
As shown in FIG. 35, both end portions 96b of the support member 96 are arranged inside the separator 25B in the radial direction with respect to the pair of leg portions 27. Both end portions 96b of the support member 96 support a pair of inclined pieces 30 of the separate portion 26 from below. Both end portions 96b of the support member 96 sandwich a pair of leg portions 27 in the radial direction together with the pipe member 20C.
The rivet 97 is arranged in the through hole 90. The rivet 97 engages with the small diameter portion of the through hole 90 of the pipe member 20C, the step portion of the through hole 90 in a state of passing through the through hole 96a of the support member 96, and the peripheral edge portion of the through hole 96a of the support member 96, respectively. It's stopped. As a result, the rivet 97 fixes the support member 96 to the pipe member 20C.
The detent portion 95 is arranged below the separate portion 26 in the internal space S1.

As described above, according to the cable protection pipe 8 of the present embodiment, the separate portion 26 is supported by the both ends 96b of the support member 96 fixed to the pipe member 20C by the rivet 97, thereby supporting the pipe member 20C. It is possible to prevent the separate portion 26 from rotating around the central axis O. At this time, since both ends 96b of the support member 96 sandwich the pair of legs 27 together with the tube member 20C in the radial direction, the pair of legs 27 are displaced in the circumferential direction with respect to both ends 96b of the support member 96. Can be suppressed.

In addition, like the cable protection tube 8A of the modified example of the present embodiment shown in FIG. 37, the support member 101 may be provided instead of the support member 96 of the cable protection tube 8 of the present embodiment. The support member 101 and the rivet 97 form a detent portion 100.
In FIG. 37, the shape of the extension member 105, which will be described later, in a natural state in which no external force acts is shown by the alternate long and short dash line L. The extension member 105 shown by the solid line is the shape of the extension member 105 when at least one of the extension member 105 and the main body 104 is elastically deformed.

The support member 101 includes a main body 104 and a pair of extension members 105.
The main body 104 has an arc shape that opens upward when viewed in the axial direction. The extension member 105 extends from the circumferential end of the main body 104 in a direction away from the main body 104 and in a direction in contact with the end portion of the main body 104.
The pair of extension members 105 are arranged inside the pair of leg portions 27 of the separator 25B in the radial direction, and support the pair of inclined pieces 30 of the separate portion 26 from below. At this time, at least one of the extension member 105 and the main body 104 is elastically deformed inward in the radial direction along the leg portion 27.

In the cable protection tube 8A of the modified example configured in this way, the leg portion 27 can be more reliably sandwiched between the extension member 105 and the tube member 20C.

(8th Embodiment)
Next, the eighth embodiment of the present invention will be described with reference to FIGS. 38 to 41, but the same parts as those of the embodiment are designated by the same reference numerals, the description thereof will be omitted, and only the differences will be described. explain.
As shown in FIG. 38, in the cable protection pipe 9 of the present embodiment, the pipe member 110, the separator 115 for partitioning the internal space of the pipe member 110, and the separator 115 rotate about the central axis with respect to the pipe member 110. It is provided with a detent portion 95 for suppressing the above.
Note that FIG. 38 shows a state in which a plurality of cable protection tubes 9 are connected.

As shown in FIG. 39, the pipe member 110 includes a first straight pipe portion 111 and a second straight pipe portion 112 connected to each other. The first straight pipe portion 111 is longer than the second straight pipe portion 112. The first straight pipe portion 111 and the second straight pipe portion 112 are connected so that the central axis O1 of the first straight pipe portion 111 and the central axis O2 of the second straight pipe portion 112 intersect with each other.
Here, the plane including the central axis O1 of the first straight pipe portion 111 and the central axis O2 of the second straight pipe portion 112 is referred to as the first reference plane S11. The plane orthogonal to the first reference plane S11 and including the central axis O1 of the first straight pipe portion 111 is referred to as the second reference plane S12. The pipe member 110 has a folded shape on the first reference surface S11.
As shown in FIG. 38, a branch pipe 92 is connected to the first straight pipe portion 111.

As shown in FIG. 40, the through hole 90 is formed at the end of the first straight pipe portion 111. Four through holes 90 are formed around the central axis O1 at equal angles. Of the four through holes 90, two through holes 90 are arranged on the first reference plane S11. Of the four through holes 90, the remaining two through holes 90 are arranged on the second reference plane S12.

As shown in FIGS. 38 and 41, the separator 115 is a known so-called curved separator, and includes a first fixed portion 116, a movable portion 117, and a second fixed portion 118.
The first fixing portion 116 and the second fixing portion 118 are formed of a material having a certain rigidity such as resin. The first fixing portion 116 and the second fixing portion 118 are detachable from each other.
The movable portion 117 includes a plurality of nodes 121 arranged in a predetermined direction. The nodes 121 adjacent to each other in a predetermined direction are connected to each other by a rotation shaft 122.
For example, the plurality of rotation axes 122 connecting the plurality of nodes 121 are arranged in parallel with each other. The plurality of nodes 121 can be deformed so as to be curved on a predetermined plane.

As shown in FIG. 38, the separator 115 is arranged so that the movable portion 117 is located at the connecting portion between the first straight pipe portion 111 and the second straight pipe portion 112 in one pipe member 110.

The detent portion 95 includes a support member 96 and a rivet 97. By arranging the rivet 97 in any one of the four through holes 90, the support member 96 is fixed to the first straight pipe portion 111.

As described above, according to the cable protection pipe 9 of the present embodiment, the through hole 90 formed in the first straight pipe portion 111 is on the first reference plane S11 or orthogonal to the first reference plane S11. 2 Arranged on the reference surface S12. Therefore, the direction in which the pipe member 110 is broken can be easily recognized from the position where the through hole 90 is arranged.
The number of through holes 90 formed in the first straight pipe portion 111 is not limited to four, and may be one to three or five or more. When one through hole 90 is formed in the first straight pipe portion 111, it is preferable that the through hole 90 is arranged on the first reference surface S11 or the second reference surface S12.

Although the first to eighth embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and the configuration does not deviate from the gist of the present invention. Changes, combinations, deletions, etc. of are also included. Further, it goes without saying that each of the configurations shown in each embodiment can be used in combination as appropriate.

1,1A, 3,4,4A, 5,6,7,8,8A, 9 Cable protection tube 20, 20A, 20B, 20C, 110 Tube member 21 Groove (opening)
21A slit (opening)
26 Separate part 27 Leg part 27a Submerged part (locking part)
33, 33A Protrusions 35, 35A, 45, 55, 55A, 60, 75, 80, 95, 100 Anti-rotation parts 45a Through holes 57a Regulation parts 61, 96, 101 Support members 62 screws (fixing members)
71 Extension member 90 Through hole (holding part)
96b end 97 rivets (fixing member)
111 1st straight pipe part 112 2nd straight pipe part O, O1, O2 Central axis S1 Internal space S2 Upper space S3 Lower space S11 1st reference plane S12 2nd reference plane

Claims (11)

A pipe member that does not have a convex portion on the inner peripheral surface and extends along a horizontal plane,
A separate portion extending in the left-right direction in a cross section orthogonal to the central axis of the pipe member and dividing the internal space of the pipe member into an upper space and a lower space.
A detent portion that is arranged below the separate portion in the internal space of the pipe member and suppresses the separate portion from rotating about the central axis with respect to the pipe member.
Cable protection tube with. A pair of legs extending downward along the inner peripheral surface of the pipe member from both ends of the separate portion in the left-right direction are provided.
The detent portion
An opening formed on the inner peripheral surface of the pipe member and
A protrusion provided on the pair of legs, arranged in the opening, and locked to the peripheral edge of the opening in the pipe member in the circumferential direction of the pipe member.
The cable protection tube according to claim 1. The cable protection tube according to claim 1, wherein the detent portion supports the separate portion from below the separate portion and contacts the inner peripheral surface of the pipe member from above. The cable protection tube according to claim 3, wherein the detent portion is provided with a regulation portion that regulates the rotation of the separate portion with respect to the detent portion around the central axis. The cable protection tube according to claim 3 or 4, wherein the detent portion is formed with a through hole that penetrates the detent portion in a direction along the central axis. The detent portion
A support member that supports the separate portion from below the separate portion,
A fixing member that fixes the support member to the end face of the pipe member in the direction along the central axis, and
The cable protection tube according to claim 1. The detent portion
An extension member connected to the separate portion and arranged outside the pipe member,
A fixing member that fixes the extension member to the end face of the pipe member in the direction along the central axis, and
The cable protection tube according to claim 1. A pair of legs extending downward along the inner peripheral surface of the pipe member from both ends of the separate portion in the left-right direction are provided.
The detent portion
A holding member fixed to the inner peripheral surface of the pipe member and
A locking portion formed on the pair of legs and locking to the holding member in the circumferential direction,
The cable protection tube according to claim 1. A pair of legs extending downward along the inner peripheral surface of the pipe member from both ends of the separate portion in the left-right direction are provided.
The detent portion
A support member having an arc shape that opens upward when viewed in the direction along the central axis,
A fixing member that fixes the support member to the pipe member,
Have,
Both ends of the support member are arranged inside the pipe member in the radial direction with respect to the pair of legs to support the separate portion from below.
The cable protection tube according to claim 1, wherein both end portions sandwich the pair of legs together with the tube member in the radial direction. The support member
A main body that has an arc shape that opens upward when viewed in the direction along the central axis.
An extension member extending from the circumferential end of the main body in a direction away from the main body and in contact with the end portion of the main body to support the separate portion from below.
9. The cable protection tube according to claim 9. The pipe member has a first straight pipe portion and a second straight pipe portion at which the central axes intersect with each other.
A holding portion in which the fixing member is arranged is formed in the first straight pipe portion.
The holding portion is on the first reference plane including the central axis of the first straight pipe portion and the central axis of the second straight pipe portion, or is orthogonal to the first reference plane and is the central axis of the first straight pipe portion. The cable protection tube according to claim 9 or 10, which is arranged on a second reference plane including.

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