JP2002291126A - Handhole and protective device of cables - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily provide a handhole and protective devices of cables on the middle portions of the cables without cutting the cables together in bundle. SOLUTION: This handhole HA has a box 10 which has cylindrical side walls erected on its bottom wall to form a box shape and insertion holes 13, through which cables C buried in the ground are inserted, in its front and rear side walls. The box 10 comprises two divided box elements 10A and 10B which are obtained by dividing the box 10 symmetrically with respect to the insertion holes 13. Protective devices SA, which are attached to the handhole HA to protect the cables C inserted through the insertion holes 13, have through-holes through which the cables C are drawn and sleeves 20 having coupling parts coupled with the insertion holes 13. The sleeve 20 comprises two divided sleeve elements 20A and 20B which are obtained by dividing the sleeve 20 symmetrically with respect to the through-hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handhole provided at a relay point of cables buried in the ground, such as electric wires and optical fibers, and to a cable protection device attached to the handhole to protect the cables.

[0002]

2. Description of the Related Art Generally, for example, as shown in FIG.
A plurality of cables C such as communication electric wires and optical fibers are bundled and buried underground along the road. In the middle of the cables C, there is provided a relay point for connection with other cables C such as information outlets required for roads, beacons, and signal wiring from sensors such as seismometers. A handhole H is installed at these stopover points. Conventionally, this handhole H is shown in FIG.
As shown in FIG. 1, a rectangular tubular side wall 12 is erected on a rectangular bottom wall 11 by, for example, concrete molding, and formed into a box shape. A box 10 having an insertion hole 13 having a circular cross section through which a class C is inserted is provided. Reference numeral 14 denotes a cover for closing the upper opening of the box 10, and a circular lid 15 exposed on the ground is provided at the center. The cables C are inserted into the insertion holes 13 of the box 10 of the handhole H at the time of attachment. In the handhole H, a cable protection device S for protecting the cables C inserted through the insertion hole 13 is provided.
Is attached. Conventionally, this protection device S is provided with cables C
And has one through hole 21 having a circular cross section coaxial with the insertion hole 13 of the hand hole H, and the insertion hole 1
3 is provided with a sleeve 20 having a fitting portion 22 fitted therein. The insertion portion 22 of the sleeve 20 is formed in a circular cross section to be inserted into the insertion hole 13. A rectangular flange 23 attached to the opening edge of the insertion hole 13 is provided at the base end of the fitting portion 22 of the sleeve 20.

[0003]

By the way, cables C such as communication electric wires and optical fibers along the above roads.
Is buried in the ground, as shown in FIG. 10, it is buried on the opposite side of the road, for example, when it is desired to install a ground information panel B for displaying a signal from cables C. The corresponding cables C are branched from the bundle of cables C, the extension cables Ca are connected, the extension cables Ca are buried under the road, and extended to the opposite side of the road. Kinds of Ca for handhole H
Connect to the ground information panel B via (b). In this case, since a device for branching must be incorporated in the branching part, there is no problem when branching from a relay point with the handhole H. However, when branching from the middle of burying the cables C, A new handhole H (a) is installed. At this time, a bundle of cables C is inserted into the insertion hole 13 of the box 10 of the new handhole H (a), and a new protection device S for cables is also prepared.
The protection device S is also inserted through the through hole 21 of the sleeve 20. For insertion, it is necessary to cut not only the cables C to be branched but also all the cables C in a bundle. Therefore, there is a problem that the cutting operation and the connection operation become very complicated, and the operation efficiency is extremely low. The present invention has been made in view of such problems, and provides a handhole and a cable protection device which can be easily provided in the middle of cables without cutting the cables together. The purpose is to:

[0004]

The technical means of the present invention for solving the above-mentioned problem is that a cylindrical side wall is erected on a bottom wall and is formed in a box shape, and an underground is formed on a side wall in a front-rear direction. In a handhole provided with a box having an insertion hole through which cables buried in the box are inserted, the box is divided across the insertion hole, and the divided box divided bodies are combined. . Thus, for example, when installing a handhole in the middle of burying cables buried in the ground, first, a hole is excavated in the ground in the middle of burying cables to expose the cables. then,
A pair of box divisions of a box are inserted into the insertion holes and cables are inserted into the respective holes. In this case, since the box divided body is divided across the insertion hole, the insertion hole is open, so that it is easy to insert the cable into the insertion hole without cutting all the cables as in the conventional case. Can be easily installed, and the workability is extremely improved.

If necessary, the box is divided symmetrically across the insertion hole, and the divided boxes are combined. Since the left and right box divisions can be formed by one concrete mold, the production becomes easy. Further, if necessary, a concave portion into which an adhesive for bonding the box divided bodies is injected is formed at a joint portion between the box divided bodies, and an adhesive is injected into the concave portion to join the box divided bodies together. The configuration is as follows. Since the box division bodies are bonded by the adhesive, the box division bodies can be strongly connected to each other. Further, if necessary, a seal member is interposed at the joint between the box divided bodies. Since the seal member is interposed, it is possible to prevent groundwater or the like from entering the inside. Furthermore, if necessary, a connection metal fitting for connecting the above-mentioned box divided bodies is provided. Since the connection is made by the connection fitting, the box divided bodies can be strongly connected to each other.

Further, the technical means of the present invention for solving the above-mentioned problems is a cable or the like which is formed in a box shape with a cylindrical side wall standing upright on a bottom wall and buried underground in a front-rear side wall. Is attached to a handhole having a box formed by combining box division bodies divided across the insertion hole and having an insertion hole through which the insertion hole is inserted to protect cables and the like inserted through the insertion hole. In the cable protection device, a sleeve having a through-hole through which the cables are passed and having a fitting portion to be fitted into the insertion hole, the sleeve is divided across the through-hole,
The divided sleeve divided bodies are combined.
With this, when installing a hand hole in the middle of burying cables and providing a protection device to cables, the sleeve divided body is divided across the through hole, so the through hole is open, The cables can be easily inserted into the through holes without cutting the cables one by one, and the cables can be easily provided in the middle of the cables.

If necessary, the sleeve is divided symmetrically across the through hole, and the divided sleeves are combined. Since both the left and right sleeve divided bodies can be formed by one kind of divided body, manufacturing becomes easy. Further, as necessary, each sleeve divided body of the sleeve is provided with a flange attached to an opening edge of the insertion hole. The sleeve segment can be firmly fixed. Further, if necessary, the insertion hole of the box is formed in a circular cross section, the insertion portion of the sleeve is formed in a circular cross section to be inserted into the insertion hole, and the sleeve has a cross section coaxial with the insertion hole. It has a configuration in which one circular through hole is provided. Cables can be bundled and inserted.

Further, if necessary, the insertion hole of the box is formed in a rectangular cross section, the fitting portion of the sleeve is formed in a rectangular cross section to be fitted in the insertion hole, and a plurality of through holes are formed in the sleeve. Are arranged in a row. Cables can be individually inserted. In addition, if necessary, an injection hole of a caulking material to be injected into the through hole of the sleeve is formed in the sleeve divided body of the sleeve. It is possible to prevent groundwater or the like from entering the inside.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a protection device for a handhole and cables according to an embodiment of the present invention. Note that the same components as described above are denoted by the same reference numerals and described. 1 to 5 show a handhole HA and a cable protection device SA according to a first embodiment of the present invention. First, the handhole HA according to the first embodiment will be described. As shown in FIGS. 1 to 4, the rectangular bottom wall 11 has a rectangular cylindrical side wall 1.
2 are erected and formed in a box shape,
A concrete box 1 having a circular cross-section insertion hole 13 through which cables C buried underground are inserted.
0 is provided. Reference numeral 14 denotes a concrete covering member for closing the upper opening of the box 10, and a circular iron cover 15 exposed on the ground is provided at the center. This box 10
Is symmetrically divided across the insertion hole 13,
The divided box divided bodies 10A and 10B are combined. Each box divided body 10A, 10B
Is formed by concrete molding. In this case, since the box 10 is symmetrically divided, one concrete mold is used to divide both left and right box divided bodies 10A,
Since 10B can be formed, manufacturing becomes easy.

As shown in FIG. 4, the box divisions 10A, 10B are connected to the joints of the box divisions 10A, 10B.
A recess 16 into which an adhesive for bonding the OBs is injected is formed, and the adhesive is injected into the recess 16 to join the box divided bodies 10A and 10B together. The recess 16 is formed by cutting out the outer edge and the inner edge of the joint.
Furthermore, two string-like rubber seal members 17 are interposed between the outer concave portion 16 and the inner concave portion 16 at the joint portion between the box divided bodies 10A and 10B. An adhesive is also injected between the two seal members 17. The sealing member 17 is previously divided into box divided bodies 10A,
10B. Furthermore, a connection fitting 1 for connecting the box divided bodies 10A and 10B to each other.
8 are provided. The connection fitting 18 is inserted into the insertion hole 13.
Is a metal plate provided over the side wall 12 of each of the box divisions 10A and 10B, and formed with bolt holes 18a for inserting bolts 18c on the left and right sides. On the other hand, a stud nut 18b into which the bolt 18c is screwed is provided in a portion corresponding to the bolt hole 18a of the connecting bracket 18 of each of the box divided bodies 10A and 10B. Then, the box split bodies 10A and 10B are connected to each other by inserting the bolt 18c into the bolt hole 18a of the connection fitting 18 and screwing it into the stud nut 18b.

Next, a cable protection device SA according to the first embodiment will be described. As shown in FIG. 5, this is provided with a sleeve 20 configured by using a resin tube such as a PVC. The hole of the resin tube is configured as a through hole 21 through which the cables C pass. One end of the sleeve 20 is formed as a fitting portion 22 fitted into the insertion hole 13 of the box 10 of the handhole HA. Further, a rectangular concrete flange 23 attached to the opening edge of the insertion hole 13 of the box 10 is provided on the other end side of the sleeve 20. For more information, Box 1
0 is formed in a circular cross section and the sleeve 20
Is formed in a circular cross section to be fitted into the insertion hole 13, and the sleeve 20 is provided with one through hole 21 having a circular cross section coaxial with the insertion hole 13. And
The sleeve 20 is divided along the through hole 21 together with the flange 23, and the divided sleeve divided body 20 is formed.
A, 20B. The sleeve divided bodies 20A and 20B are divided by a division line oblique to a line along the side of the flange 23, and
A and 20B are divided so as to be symmetrical. Thereby, each sleeve divided body 20A, 2
0B, a flange 23 attached to the opening edge of the insertion hole 13
Will be provided. Each flange 23 has a mounting hole 25 into which a stop pin 24 to be driven into the box divided bodies 10A and 10B is inserted.

Further, a fixing member 26 for fixing the sleeve divided bodies 20A and 20B to each other is provided. The fixing bracket 26 is a metal plate provided over the flange 23 of each of the sleeve divided bodies 20A and 20B, and has a bolt hole 26a through which a bolt 26c is inserted on the left and right. On the other hand, in the portion corresponding to the bolt hole 26a of the fixing bracket 26 of each sleeve divided body 20A, 20B, the bolt 2
A stud nut 26b into which 6c is screwed is provided. Then, by inserting the bolt 26c into the bolt hole 26a of the fixture 26 and screwing it into the stud nut 26b, the sleeve divided bodies 20A and 20B are connected to each other.

Therefore, when the handhole HA and the cable protection device SA according to the first embodiment are installed, the following is performed. Here, as shown in FIG. 1, when cables C such as communication electric wires and optical fibers are buried underground along a road, a signal from, for example, the cables C is sent to the opposite side of the road. When it is desired to install the ground information panel B to be displayed, the corresponding cables C are branched from the bundle of the cables C during the burying of the buried cables C, and the extension cables Ca are connected. The extension cables Ca are buried under the road and extended to the opposite side of the road.
The case where a is connected to the ground information panel B will be described. First, a hole is excavated in the ground in the middle of burying the cables C to expose the cables C. Then, the pair of box divided bodies 10A and 10B of the box 10 are inserted into the insertion holes 13 and the cables C are inserted into the respective holes. In this case, since the box divided bodies 10A and 10B are divided across the insertion hole 13, the insertion hole 13 is open. Therefore, it is not necessary to cut all the cables C one by one as in the related art. It can be easily inserted into the insertion hole 13. Next, the box divisions 10A and 10B are connected to each other by the connection fitting 18, and an adhesive is injected into the concave portion 16 at the joint of the box divisions 10A and 10B. As a result, the joint between the box divided bodies 10A and 10B is
7 are bonded in a state where they are interposed, and the box
A and 10B are connected to each other. In this case, since the box division bodies 10A and 10B are connected by the connection fitting 18 and are bonded by an adhesive, they are strongly connected. Further, since the seal member 17 is interposed, a situation where groundwater or the like intrudes into the inside is prevented.

Then, a cable protection device SA is mounted. In this case, the pair of sleeve divided bodies 20A, 20A
B is inserted through the through hole 21 outside the through hole 13 of the box 10.
The cable C is inserted into the box 10, and the fitting portion 22 is fitted into the insertion hole 13 of the box 10. In this case, since the sleeve divided bodies 20A and 20B are divided across the through hole 21, the through hole 21 is open, and therefore,
It can be easily inserted into the through hole 21. Next, while fixing the sleeve divided bodies 20A and 20B to each other with the fixing bracket 26, the locking pin 24 is inserted through the flange 23 of the sleeve divided bodies 20A and 20B, and the box divided body 10A is cut.
A and 10B are fixed by driving. In this case, since the sleeve divided bodies 20A and 20B are connected to each other by the fixing bracket 26 and fixed by the stopper pin 24, they are firmly fixed. In addition, a sealing material is interposed at the joint between the box divided bodies 10A and 10B and the joint between the flanges 23 of the sleeve divided bodies 20A and 20B. Since the sealing material is interposed, it is possible to prevent groundwater or the like from entering the inside. Note that reference numeral 27 in FIG. 3 denotes a sheath tube that covers the cables C.

While the handhole HA is installed as described above, another existing handhole H is also installed on the opposite side of the road, and the extension cable Ca is buried by excavating under the road.
Then, a hole 29 (FIG. 2) is provided in the handhole HA, the corresponding cable C is branched from the bundle of cables C in the handhole HA, and the extension cable Ca is connected using a connection device. Then, cover 14 is placed in box 1
0, cover 15 is exposed to the ground, and hand hole HA
Buried.

FIGS. 6 to 9 show a handhole HB and a cable protection device SB according to a second embodiment of the present invention. First, a handhole HB according to the second embodiment will be described. This is formed substantially similarly to the handhole HA according to the first embodiment, as shown in FIGS. The difference from the hand hole HA according to the first embodiment is that the side wall 12 in the front-rear direction is different.
Is formed in a rectangular cross section.

Next, a cable protection device SB according to a second embodiment will be described. It has a block-shaped rectangular sleeve 30 made of resin. Sleeve 30
Are provided in two sets and are connected in the left-right direction. In each of the sleeves 30, a plurality (three in the embodiment) of through-holes 31 through which the cables C are passed are arranged in the left-right direction. One end of the sleeve 30 is a hand hole HB.
Is formed as a fitting portion 32 fitted into the insertion hole 13 of the box 10. That is, the fitting portion 32 of the sleeve 30
Is formed in a rectangular cross section to be fitted into the insertion hole 13. Then, as shown in FIG. 8 and FIG.
Numeral 0 is vertically symmetrically divided across the through hole 31 and is constituted by combining the divided sleeve divided bodies 30A and 30B. A flange 33 attached to the opening edge of the insertion hole 13 is provided on each of the sleeve divided bodies 30A and 30B of the sleeve 30. This flange 33
L-shaped rod, one piece of which is divided into sleeves 30A, 3
0B with the screw 34, and the other piece is handhole HB
Are mounted on the side wall 12 of each of the box divided bodies 10A and 10B with screws. Further, the sleeve divided body 30A,
An injection hole 36 of a caulking material injected into the through hole 31 is formed in 30B. Reference numeral 37 in FIG. 9 denotes a connecting plate that connects the sleeves 30 that are provided in the left-right direction.

Therefore, when the handhole HB and the cable protection device SB according to the second embodiment are installed, the above case will be described first.
A hole is excavated in the ground in the middle of the burial to expose the cables C. Then, the pair of box divided bodies 10A and 10B of the box 10 are inserted into the insertion holes 13 and the cables C are inserted into the respective holes. In this case, the box divided body 10
Since A and 10B are divided across the insertion hole 13, the insertion hole 13 is open. Therefore, the cable C can be easily inserted into the insertion hole 13 without cutting the cables C one by one as in the related art. Can be inserted. Next, the connecting bracket 18
The box divided bodies 10A and 10B are connected to each other by the
Inject the adhesive into. Thereby, the box divided body 10
The joints A and 10B are bonded together with the seal member 17 interposed therebetween, and the box divisions 10A and 10B are connected to each other. In this case, since the box division bodies 10A and 10B are connected by the connection fitting 18 and are bonded by an adhesive, they are firmly connected. Further, since the seal member 17 is interposed, it is possible to prevent groundwater or the like from entering the inside.

Then, the cable protection device SB is mounted. In this case, the pair of sleeve divided bodies 30A, 30
B through the through hole 31 outside the insertion hole 13 of the box 10.
The cables C are inserted into the box 10, and the fitting portion 32 is fitted into the insertion hole 13 of the box 10. The sleeve 30 is 2
The fitting portion 32 is fitted into the insertion hole 13 of the box 10 by connecting and assembling. In this case, the sleeve divided bodies 30A and 30B
Since it is divided across the through hole 31, the through hole 31
Are open, so that they can be easily inserted into the through holes 31. Next, the sleeve 30 is attached to the flange 3
By 3, it is fixed to the box divided bodies 10A and 10B.
In this case, one piece of the flange 33 is
A, 30B attached with screws 34, the other piece is handhole H
B is attached with screws 34 so as to straddle the side walls 12 of each of the box divisions 10A and 10B. In this case, since the sleeve divided bodies 30A and 30B are fixed by the flange 33, they are firmly fixed. Furthermore, the sleeve divided body 30
A caulking material is injected from the injection holes 36 of A and 30B.
Since the caulking material is injected, it is possible to prevent groundwater or the like from entering the inside.

While the handhole HB is installed in this way, another existing handhole HB is also installed on the opposite side of the road, and the extension cables Ca are buried by excavating under the road. Then, a hole 29 (FIG. 6) is provided in the handhole HB, the corresponding cable C is branched from the bundle of cables C in the handhole HB, and the extension cable Ca is connected using a connection device. Thereafter, the cover 14 is put on the box 10, the lid 15 is exposed on the ground, and the handhole HB is buried.

[0021]

As described above, according to the handhole of the present invention, the box is divided across the insertion hole,
Because the box split body was combined and configured, when installing the handhole in the middle of burying cables, the box split body is split across the insertion hole,
Since the insertion holes are open, cables can be easily inserted into the insertion holes without having to cut the entire cables one by one as in the conventional case, and the cables can be easily installed in the middle of the cables. . When the box is divided symmetrically across the insertion hole, both the left and right box divided bodies can be formed by one concrete mold, so that the production is facilitated.

Further, when an adhesive is injected into a concave portion formed at a joint portion between the box divided bodies and the box divided bodies are joined to each other, the box divided bodies are bonded with an adhesive, so that the box divided bodies are firmly joined to each other. Can be linked. Furthermore, when a seal member is interposed at the joint between the box divided bodies, the seal member is interposed, so that groundwater or the like can be prevented from entering the inside. Furthermore, in the case where a connection fitting for connecting the box divided bodies is provided, the connection is performed by the connection fitting, so that the box divided bodies can be strongly connected.

Further, according to the cable protection device of the present invention, there is provided a sleeve having a through hole through which the cables are passed and having a fitting portion to be fitted into the insertion hole of the hand hole. Since it was divided across the through hole and combined with this divided sleeve divided body, a hand hole was installed in the middle of burying cables,
When providing a protective device to cables, the sleeve split
Since the cable is divided across the through hole, the through hole is open, so that the cables can be easily inserted into the through hole without cutting the cables one by one. Can be easily provided on the way.

Further, when the sleeve is divided symmetrically across the through hole, both the left and right sleeve divided bodies can be formed by one kind of divided body, thereby facilitating the manufacture. Furthermore, when a flange attached to the opening edge of the insertion hole is provided in each sleeve divided body of the sleeve, the sleeve divided body can be firmly fixed. Further, the insertion hole of the box is formed in a circular cross section, the fitting portion of the sleeve is formed in a circular cross section to be fitted in the insertion hole, and the sleeve is provided with one through hole having a circular cross section coaxial with the insertion hole. In this case, cables can be bundled and inserted. Further, when the insertion hole of the box is formed in a rectangular cross section, the insertion portion of the sleeve is formed in a rectangular cross section to be inserted in the insertion hole, and when a plurality of through holes are arranged in the sleeve, cables are individually separated. Can be inserted. Furthermore, when the injection hole of the caulking material injected into the through hole of the sleeve is formed in the sleeve divided body of the sleeve, it is possible to prevent groundwater or the like from entering the inside.

[Brief description of the drawings]

FIG. 1 is a diagram showing a protection device for a handhole and cables according to a first embodiment of the present invention, together with an example of an installation state thereof.

FIG. 2 is an exploded perspective view showing a handhole according to the first embodiment of the present invention.

FIGS. 3A and 3B are diagrams showing a protection device for a handhole and cables according to the first embodiment of the present invention, wherein FIG. 3A is a plan view and FIG.

FIG. 4 is a main part view of a handhole according to the first embodiment of the present invention.

FIG. 5 is an exploded perspective view showing a cable protection device according to the first embodiment of the present invention.

FIG. 6 is an exploded perspective view showing a handhole according to a second embodiment of the present invention.

FIGS. 7A and 7B are diagrams showing a protection device for a handhole and cables according to a second embodiment of the present invention, wherein FIG. 7A is a plan view and FIG.

FIG. 8 is an exploded perspective view showing a cable protection device according to a second embodiment of the present invention.

FIG. 9 is a perspective view showing a protection device for a handhole and cables according to a second embodiment of the present invention.

FIG. 10 is a diagram showing a conventional handhole together with an example of its installation state.

FIG. 11 is a perspective view showing an example of a conventional handhole and cable protection device.

[Explanation of symbols]

 H Handhole S Cable protection device HA Handhole SA Cable protection device 10 Box 10A Box split body 10B Box split body 11 Bottom wall 12 Side wall 13 Insertion hole 14 Coating body 15 Cover 16 Recess 17 Sealing member 18 Connection fitting 20 Sleeve 20A Sleeve split body 20B Sleeve split body 21 Through hole 22 Fitting portion 23 Flange 24 Stop pin 25 Mounting hole 26 Fixing bracket HB Hand hole SB Cable protection device 30 Sleeve 30A Sleeve split body 30B Sleeve split body 31 Through hole 32 Insert Part 33 Flange 34 Screw 36 Injection hole 37 Connecting plate

Claims (11)

[Claims] 1. A handhole having a box having a bottom wall with a cylindrical side wall standing upright and formed in a box shape, and a through-hole on a side wall in a front-rear direction and having an insertion hole through which cables buried in the ground are inserted. 3. The handhole according to claim 1, wherein the box is divided across the insertion hole, and the divided boxes are combined. 2. The handhole according to claim 1, wherein the box is divided symmetrically across the insertion hole, and the divided boxes are combined. 3. A concave portion into which an adhesive for bonding the box divided bodies is injected is formed at a joint portion between the box divided bodies, and an adhesive is injected into the concave portion to join the box divided bodies together. The handhole according to claim 1 or 2, wherein: 4. The handhole according to claim 3, wherein a seal member is interposed at a joint between the box divided bodies. 5. The handhole according to claim 1, further comprising a connection fitting for connecting the box divided bodies. 6. A tubular side wall is provided on a bottom wall to form a box, and a longitudinally extending side wall has an insertion hole through which cables buried in the ground are inserted, and crosses the insertion hole. In a cable protection device attached to a handhole provided with a box configured by combining the divided box bodies, the cables are passed through. A sleeve having a through hole and a fitting portion to be fitted into the insertion hole, dividing the sleeve across the through hole, and combining the divided sleeve divided bodies. Cable protection device. 7. The cable protection device according to claim 6, wherein the sleeve is symmetrically divided across the through hole and the divided sleeves are combined. 8. The cable protection device according to claim 6, wherein a flange attached to an opening edge of the insertion hole is provided on each sleeve divided body of the sleeve. 9. An insertion hole of the box is formed in a circular cross section, a fitting portion of the sleeve is formed in a circular cross section to be fitted in the insertion hole, and a circular cross section of the sleeve is coaxial with the insertion hole. 9. The cable protection device according to claim 6, wherein one of the through holes is provided. 10. The insertion hole of the box is formed in a rectangular cross section, the fitting portion of the sleeve is formed in a rectangular cross section to be fitted in the insertion hole, and a plurality of through holes are arranged in the sleeve. The cable protection device according to claim 6, 7 or 8, wherein: 11. The cable protection device according to claim 10, wherein an injection hole of a caulking material injected into a through hole of the sleeve is formed in the sleeve divided body of the sleeve.