JP7330842B2 - cable - Google Patents

Description

The present invention relates to cables.

2. Description of the Related Art Conventionally, there is a cable that is used for wiring work in collective housing and includes a trunk line, a branch line, and a connection portion that electrically connects the trunk line and the branch line. In this cable, the portion connecting the core wire of the main line and the core wire of the branch line is covered with a protective portion. In addition, in the axial direction of the trunk line, the protective portion does not cover the entire area of the trunk core wire from which the trunk covering portion has been removed, so the trunk core wire located outside both ends of the protective portion is exposed to the outside. Furthermore, since the protective portion does not cover the entire region of the branch core wire from which the trunk covering portion has been removed, the branch core wire positioned outside the other end in the axial direction of the protective portion is exposed to the outside. The cable needs to ensure insulation in the region where the core wire of the main line is exposed to the outside and the region where the core wire of the branch wire is exposed to the outside. Therefore, in this cable, after the area where these core wires are exposed to the outside is put inside a mold, a thermoplastic synthetic resin is put inside the mold and molded, so that the core wires are exposed to the outside. The region is covered with an insulating covering member and a connection portion is provided (see, for example, Patent Document 1).

In the production of such a cable, misalignment occurs when the area where the core wire is exposed to the outside is set inside the mold during molding. More specifically, when the area is set inside the mold, the area that should be placed at the regular position may be displaced within a margin of error from the regular position. . Then, in the arrangement direction of the trunk line and the branch line, which is orthogonal to the axial direction of the trunk line and in which the trunk line and the branch lines are arranged, when the above-mentioned area is arranged at a deviation from the normal position, the outer peripheral surface of the core line in the above-mentioned area is removed from the covering member. There is a possibility that the thickness to the outer peripheral surface of the will be thin. For this reason, when the cable is provided with the covering member by molding, the above-described positional displacement must be taken into account to ensure insulation. As a result, the thickness from the outer peripheral surface of the core wire to the outer peripheral surface of the covering member in the above-mentioned region may increase, and thus the connection portion of this type of cable may become large.

JP 2001-229995 A

By the way, there are cases where cables are inserted into holes at the construction site of collective housing. In recent years, collective housing in urban areas is provided with a plurality of houses in an overcrowded state, so it is preferable that the inner diameter of the hole is small. When inserting the above cable into a hole with a small inner diameter, a cable with an enlarged connecting portion may come into contact with the inner peripheral surface of the hole during insertion. Therefore, when the cable is inserted into a hole at a construction site, there is room for improvement from the viewpoint of ease of construction work.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cable that facilitates construction work at construction sites.

In order to solve the above problems, a cable according to the present invention includes a trunk core wire, a trunk wire having a trunk wire covering portion that covers the trunk wire core wire, a branch wire core wire, and a branch wire covering that covers the branch wire core wire. and a connection portion for electrically connecting the main line and the branch line, wherein the connection portion includes a main line connection area of the main line core wire that contacts the branch line core line, and the a protective portion that covers a branch line connection region of the branch core wire that contacts the trunk core wire; 1 outer shell member, the trunk line covering portion positioned on the other side of the protective portion in the axial direction, a second outer shell member positioned between the branch line covering portion and the protective portion, and insulation The first outer shell member is divided into two, and the first outer shell member is formed into a cylindrical shape by combining the two along the opposing direction orthogonal to the axial direction. It has a shell first portion and a first outer shell second portion, and the cylindrical first outer shell first portion and the first outer shell second portion are continuous with the main line connection region of the main line core wire. and covering the first main line exposed area exposed to the outside, the second outer shell member is divided into two, and is formed into a cylindrical shape by combining them along the facing direction. It has a shell first portion and a second outer shell second portion, and the cylindrical second outer shell first portion and the second outer shell second portion are continuous with the main line connection region of the main line core wire. and covers the second trunk line exposed area exposed to the outside, and covers the branch line exposed area that is continuous with the branch line connection area of the branch line core wire and is exposed to the outside, It is characterized by being integrally provided so as to follow the shape of at least the outer peripheral surface of the first outer shell member, the outer peripheral surface of the protective portion, and the outer peripheral surface of the second outer shell member.

Further, in the above cable, the first outer shell member has a space formed therein through which the trunk core wire penetrates, and the second outer shell member has the trunk core wire penetrated therethrough and the branch wire. It is preferable that a space is formed inside such that the core wire passes through.

Further, in the above cable, the first outer shell member has a pair of wall portions that are perpendicular to the facing direction and the axial direction and face each other in an arrangement direction in which the trunk line and the branch line are arranged. The pair of wall portions has a branch line side wall portion positioned on the branch line side in the arrangement direction and a trunk line side wall portion positioned on the trunk line side when viewed from the axial direction, The line side wall portion is inclined such that the distance from the main line side wall portion to the branch line side wall portion in the arrangement direction gradually increases from one side to the other side in the axial direction, and the second outer shell The member has a pair of wall portions facing each other in the arrangement direction, and the pair of wall portions are branch line side wall portions positioned on the branch line side in the arrangement direction when viewed from the axial direction. and a main line side wall portion positioned on the main line side, and the branch line side wall portion is such that the distance from the main line side wall portion to the branch line side wall portion in the arrangement direction is one side in the axial direction. It is preferable to incline so as to gradually increase from one side to the other side.

Moreover, in the above cable, it is preferable that the covering member is an ultraviolet-curing synthetic resin material.

A cable according to the present invention includes a covering member integrally provided so as to follow the shape of the outer peripheral surface from the first main line end to the second main line end and the branch line end. Therefore, in the cable according to the present invention, it is not necessary to consider the positional deviation when providing the covering member by molding, so the thickness of the covering member can be reduced. As a result, the cable according to the present invention can reduce the size of the connection portion, so that the construction work can be facilitated when inserting the cable into the hole at the construction site.

1 is a perspective view of a cable according to an embodiment; FIG. FIG. 2 is a schematic longitudinal sectional view of the cable. FIG. 3 is a perspective view showing a first portion of the first outer shell member; FIG. 4 is a perspective view showing a second portion of the first outer shell member; FIG. 5 is a perspective view showing the first portion of the second outer shell member. FIG. 6 is a perspective view showing the second portion of the second outer shell member. FIG. 7 is a perspective view explaining assembly of the cable. FIG. 8 is a perspective view of a case in which the first outer shell member is provided on the main line and the second outer shell member is provided on the main line and the branch line after the main line connection area and the branch line connection area are covered with the protective portion. be.

EMBODIMENT OF THE INVENTION Below, embodiment of the cable which concerns on this invention is described based on drawing. In addition, this invention is not limited by this embodiment. In addition, components in the following embodiments include components that can be easily replaced by those skilled in the art, or components that are substantially the same.

[Embodiment]
FIG. 1 is a perspective view of a cable 100 according to an embodiment. FIG. 2 is a schematic longitudinal sectional view of the cable 100. FIG. FIG. 3 is a perspective view showing the first portion 4a of the first outer shell member 4. FIG. 4 is a perspective view showing the second portion 4b of the first outer shell member 4. FIG. FIG. 5 is a perspective view showing the first portion 5a of the second outer shell member 5. FIG. 6 is a perspective view showing the second portion 5b of the second outer shell member 5. FIG. FIG. 7 is a perspective view explaining assembly of the cable 100. FIG. In FIG. 8, after covering the main line connection area 13 and the branch line connection area 23 with the protective portion 3, the main line 1 is provided with the first outer shell member 4, and the main line 1 and the branch line 2 are provided with the second outer shell members 5. is a perspective view in the case of providing a.

In the following description, the three directions orthogonal to each other are referred to as "first direction X", "second direction Y", and "third direction Z" for convenience. In this embodiment, the first direction X is the axial direction of the main line 1, as shown in FIGS. The second direction Y is the direction in which the first portion 4a and the second portion 4b of the first outer shell member 4 face each other, as shown in FIG. It is the direction in which the second portion 5b and the second portion 5b face each other. The third direction Z is the direction in which the main line 1 and the branch lines 2 are arranged, as shown in FIGS.

The cable 100 shown in FIG. 1 according to the present embodiment is used, for example, for wiring work in collective housing. Such a cable 100 includes a main line 1, a branch line 2, and a connection portion 10, as shown in FIGS.

The trunk 1 has a conductive trunk core 11 and an insulating trunk covering 12 covering the trunk 11 . The trunk line 1 has an axis 1x extending along the first direction X. As shown in FIG. In addition, for example, by removing the trunk line covering portion 12 in the middle of the first direction X, the trunk line covering portion 12a located on one side of the protection portion 3 described later in the first direction X is removed in the first direction. It has a first trunk covered end portion 1a located on the other side of X. In addition, the main line 1 has a second covered main line end portion 1b positioned on one side in the first direction X at the covered main line portion 12b positioned on the other side in the first direction X of the protective portion 3 . The main line 1 is, for example, a low-voltage power cable used for indoor wiring.

The branch wire 2 has a conductive branch wire core wire 21 and an insulating branch wire covering portion 22 that covers the branch wire core wire 21 . For example, by removing the branch wire covering portion 22 at the terminal in the first direction X, the branch wire 2 is removed in the first direction X at the branch wire covering portion 22 located on the other side of the protection portion 3 in the first direction X. has a branch wire coated end 2a located on one side of the . The branch line 2 is, for example, a high voltage drop line.

In the cable 100 according to the present embodiment, the outer diameter of the trunk core wire 11 is larger than the outer diameter of the branch core wire 21 . Further, in the cable 100 according to the present embodiment, the radial thickness of the main wire covering portion 12 is larger than the radial thickness of the branch core wire 21 . Furthermore, in the cable 100 of this embodiment, the outer diameter of the trunk line 1 is larger than the outer diameter of the branch line 2 .

The connection part 10 electrically connects the main line 1 and the branch line 2 . The connection portion 10 has a protection portion 3 , a first outer shell member 4 , a second outer shell member 5 and a covering member 6 .

The protection part 3 covers the main line connection area 13 of the main line core 11 that contacts the branch core line 21 and the branch line connection area 23 of the branch line core line 21 that contacts the main line core 11 . That is, the main line connection area 13 and the branch line connection area 23 are located inside the protection section 3 . Further, the main line connection region 13 and the branch line connection region 23 are located between the first outer shell member 4 and the second outer shell member 5 in the first direction X. As shown in FIG. The protective portion 3 is formed, for example, in a substantially cylindrical shape. The protective portion 3 has a first protective end portion 3a positioned on one side in the first direction X and a second protective end portion 3b positioned on the other side in the first direction X. As shown in FIG.

The first outer shell member 4 is positioned in the first direction X between the main line covering portion 12a positioned on one side of the protection portion 3 in the first direction X and the protection portion 3 . More specifically, the first outer shell member 4 is configured such that a covered main line portion 12a positioned on one side in the axial direction X of the protective portion 3 is connected to a first covered main line end portion 1a positioned on the other side in the axial direction X. , and the first protective end portion 3a positioned on one side of the protective portion 3 in the axial direction X. As shown in FIG. The first outer shell member 4 covers a first exposed trunk line area 14 a of the trunk core wire 11 that is continuous with the trunk connection area 13 and exposed to the outside. When viewed from the first direction X, the outer peripheral surface of the trunk line covering portion 12a located on one side of the protective portion 3 in the first direction X, and the first outer shell member 4 adjacent to the first trunk line covering end portion 1a. It is continuous with the outer peripheral surface. Further, when viewed from the first direction X, the outer peripheral surface of the first outer shell member 4 adjacent to the first protective end portion 3a and the outer peripheral surface of the protective portion 3 located on one side in the first direction X consecutive.

The second outer shell member 5 is positioned in the first direction X between the main line covered portion 12b and the branch line covered portion 22a positioned on the other side of the protective portion 3 in the first direction X, and the protective portion 3. do. More specifically, the second outer shell member 5 is positioned between the second trunk line covered end portion 1b and the branch line covered end portion 2a, and the second protective end portion 3b. The second covered trunk line end portion 1b is located on one side in the axial direction X of the trunk line covered portion 12b located on the other side in the axial direction X of the protective portion 3 . The covered branch wire end portion 2a is positioned on one side in the axial direction X of the covered branch wire portion 22a positioned on the other side in the axial direction X of the protective portion 3 . The second protection end portion 3 b is located on the other side of the protection portion 3 in the axial direction X. As shown in FIG. The second outer shell member 5 is continuous with the main line connection area 13 of the main line core wire 11 and covers the second main line exposed area 14b exposed to the outside, and covers the branch line connection area 23 of the branch line core wire 21. It covers the branch line exposed region 24 which is continuous and exposed to the outside. When viewed from the first direction X, the outer peripheral surface of the protective portion 3 located on the other side in the first direction X and the outer peripheral surface of the second outer shell member 5 adjacent to the second protective end portion 3b are continuous. . In addition, when viewed from the first direction X, the outer peripheral surface of the second outer shell member 5 adjacent to the second trunk line covered end portion 1b and the trunk line covering portion positioned on the other side in the first direction X of the protection portion 3 The outer peripheral surface of 12b on one side (lower side) in the third direction Z and the outer peripheral surface on the other side (upper side) of the covered branch wire portion 22 in the third direction are continuous.

As shown in FIG. 2, the first outer shell member 4 is made of insulating synthetic resin and formed into a tubular shape having a space 4s. The first outer shell member 4 has an axis 4x extending along the first direction X, and includes, for example, a first portion 4a and a second portion 4b, as shown in FIG. As shown in FIGS. 3 and 4, the first portion 4a and the second portion 4b are obtained by dividing the first outer shell member 4 into two parts with respect to the axis 4x. That is, the first portion 4a is located on one side of the axis 4x in the second direction Y, and the second portion 4b is located on the other side of the axis 4x in the second direction Y. The first portion 4a has tabs 40a at both ends in the third direction Z. As shown in FIG. A claw portion 40b is formed at the tip of the tab 40a of the first portion 4a. The second portion 4b has recesses 40c at both end portions in the third direction Z that can be engaged with the claw portions 40b. In FIG. 4, for convenience of illustration, the concave portion 40c formed in the branch line side wall portion 42, which will be described later, is clearly shown, and the concave portion 40c formed in the main line side wall portion 43 is omitted. The first outer shell member 4 combines the first portion 4a and the second portion 4b by engaging the claw portion 40b and the recessed portion 40c to form a space portion 4s inside.

The first outer shell member 4 has a front wall portion 40 , a rear wall portion 41 , a branch line side wall portion 42 , a main line side wall portion 43 , and both side wall portions 44 and 45 . The front wall portion 40 is arranged on one side in the first direction X. As shown in FIG. The rear wall portion 41 is arranged on the other side in the first direction X. As shown in FIG. The branch line side wall portion 42 is arranged on the other side in the third direction Z (upper side). The trunk side wall portion 43 is arranged on one side in the third direction Z (lower side). Of the pair of side wall portions 44, 45, one side wall portion 44 is formed on the first portion 4a and the other side wall portion 45 is formed on the second portion 4b. The front wall portion 40, the rear wall portion 41, the branch line side wall portion 42, and the main line side wall portion 43 are formed over the first portion 4a and the second portion 4b. The front wall portion 40 and the rear wall portion 41 face each other in the first direction X. As shown in FIG. The side walls 44 and 45 face each other in the second direction Y. As shown in FIG. The branch line side wall portion 42 and the main line side wall portion 43 face each other in the third direction Z. As shown in FIG. In other words, when viewed from the axial direction X, the first outer shell member 4 has a pair of wall portions (branch line side wall portion 42 and main line side wall portion 43) facing each other in the third direction Z, which is the arrangement direction. have. The branch line side wall portion 42 is inclined such that the distance from the main line side wall portion 43 to the branch line side wall portion 42 in the third direction Z gradually increases from one side in the first direction X toward the other side.

The first outer shell member 4 has an insertion opening 46 a formed in the front wall portion 40 and an insertion opening 46 b formed in the rear wall portion 41 . The insertion opening 46 allows the trunk core wire 11 to be inserted through the inside and outside of the first outer shell member 4, in other words, the inside and outside of the space 4s. Here, the insertion openings 46a and 46b are formed at the side ends of the first portion 4a in the second direction Y and the side ends of the second portion 4b in the second direction Y in the front wall portion 40 and the rear wall portion 41, respectively. formed on the mating surfaces of The inner diameter of the insertion port 46a and the inner diameter of the insertion port 46b are the same. The insertion openings 46a and 46b are each formed in a circular shape. The inner diameters of the insertion openings 46 a and 46 b are the same as the outer diameter of the core wire 11 .

As shown in FIG. 2, the second outer shell member 5 is made of insulating synthetic resin and formed into a tubular shape having a space 5s. The second outer shell member 5 has an axis 5x extending along the first direction X, and includes, for example, a first portion 5a and a second portion 5b, as shown in FIG. As shown in FIGS. 5 and 6, the first portion 5a and the second portion 5b are obtained by dividing the second outer shell member 5 into two parts with respect to the axis 5x. That is, the first portion 5a is located on one side of the axis 5x in the second direction Y, and the second portion 5b is located on the other side of the axis 5x in the second direction Y. The first portion 5a has tabs 50a at both ends in the third direction Z. As shown in FIG. A claw portion 50b is formed at the tip of the tab 50a of the first portion 5a. The second portion 5b has recesses 50c at both end portions in the third direction Z that can be engaged with the claw portions 50b. In FIG. 6, for convenience of illustration, the concave portion 50c formed in the branch line side wall portion 52, which will be described later, is clearly shown, and the concave portion 50c formed in the main line side wall portion 53 is omitted. The second outer shell member 5 combines the first portion 5a and the second portion 5b by engaging the claw portion 50b and the recessed portion 50c to form a space portion 5s inside.

The second outer shell member 5 has a front wall portion 50 , a rear wall portion 51 , a branch line side wall portion 52 , a main line side wall portion 53 , and both side wall portions 54 and 55 . The front wall portion 50 is arranged on one side in the first direction X. As shown in FIG. The rear wall portion 51 is arranged on the other side in the first direction X. As shown in FIG. The branch line side wall portion 52 is arranged on the other side in the third direction Z (upper side). The trunk side wall portion 53 is arranged on one side in the third direction Z (lower side). Of the pair of side wall portions 54, 55, one side wall portion 54 is formed in the first portion 5a, and the other side wall portion 55 is formed in the second portion 5b. The front wall portion 50, the rear wall portion 51, the branch line side wall portion 52, and the main line side wall portion 53 are formed over the first portion 5a and the second portion 5b. The front wall portion 50 and the rear wall portion 51 face each other in the first direction X. As shown in FIG. The side walls 54 and 55 face each other in the second direction Y. As shown in FIG. The branch line side wall portion 52 and the main line side wall portion 53 face each other in the third direction Z. As shown in FIG. In other words, the second outer shell member 5 has a pair of wall portions (the branch line side wall portion 52 and the main line side wall portion 53) facing each other in the third direction Z, which is the arrangement direction, when viewed from the axial direction X. have. The branch line side wall portion 52 is inclined such that the distance from the main line side wall portion 53 to the branch line side wall portion 52 in the third direction Z gradually increases from one side in the first direction X toward the other side.

The second outer shell member 5 has an insertion opening 56 a formed in the front wall portion 50 and an insertion openings 56 b and 56 c formed in the rear wall portion 51 . The insertion openings 56a and 56b allow the core wire 11 to pass through the inside and outside of the second outer shell member 5, in other words, the inside and outside of the space 5s. The insertion opening 56c allows the branch core wire 21 to be inserted through the inside and outside of the second outer shell member 5, in other words, through the inside and outside of the space 5s. Here, the insertion openings 56a, 56b, and 56c are formed in the front wall portion 50 and the rear wall portion 51 at the side ends in the second direction Y of the first portion 5a and the sides in the second direction Y of the second portion 5b. It is formed on the mating surface with the edge. In addition, the rear wall portion 51 has an insertion opening 56b through which the trunk core wire 11 is inserted and an insertion opening 56c through which the branch core wire 21 is inserted. Therefore, in the third direction Z, the intermediate portion 51a of the rear wall portion 51 is positioned between the insertion opening 56b on one side and the insertion opening 56c on the other side. The insertion openings 56a and 56b are each formed in an oval shape whose height in the third direction Z is higher than the width in the second direction Y. As shown in FIG. The insertion opening 56c is formed in a circular shape. The width of the insertion opening 56a in the second direction Y and the width of the insertion opening 56b in the second direction Y are the same. Moreover, the height of the insertion opening 56a in the third direction Z is the same as the height of the insertion opening 56b in the third direction Z. As shown in FIG. The inner diameter of the insertion opening 56c is narrower than the width in the second direction Y of the insertion opening 56a and narrower than the width in the second direction Y of the insertion opening 56b. The inner diameter of the insertion opening 56c is lower than the height in the third direction Z of the insertion opening 56a and lower than the height in the third direction Z of the insertion opening 56b. The height of the insertion openings 56 a and 56 b in the third direction Z is the same as the sum of the outer diameter of the trunk core wire 11 and the outer diameter of the branch core wire 21 . The inner diameter of the insertion port 56 c is the same as the outer diameter of the branch core wire 21 .

The covering member 6 includes the outer peripheral surface of a part of the main line 1, the outer peripheral surface of a part of the branch line 2, the outer peripheral surface of the first outer shell member 4, the outer peripheral surface of the protective portion 3, and the second outer shell member 5. provided on the outer peripheral surface of the That is, the covering member 6 is provided on at least the outer peripheral surface of the first outer shell member 4 , the outer peripheral surface of the protective portion 3 , and the outer peripheral surface of the second outer shell member 5 . Such a covering member 6 is, for example, an ultraviolet curable synthetic resin material. A liquid synthetic resin material is applied to the outer peripheral surface of a portion of the main line 1, the outer peripheral surface of a portion of the branch line 2, the outer peripheral surface of the first outer shell member 4, the outer peripheral surface of the protective portion 3, and the second outer shell. The coating member 6 is provided by coating the outer peripheral surface of the member 5 and then irradiating the liquid synthetic resin material with ultraviolet rays. Thereby, the covering member 6 is provided integrally following at least the shape of the outer peripheral surface of the first outer shell member 4, the outer peripheral surface of the protective portion 3, and the outer peripheral surface of the second outer shell member 5. . The thickness of the covering member 6 provided in this manner is, for example, 2 to 3 mm.

The cable 100 having the configuration as described above is assembled as follows. First, an operator removes, for example, the trunk line covering portion 12 located halfway in the first direction X on the trunk line 1 . Also, the worker removes the branch wire covering portion 22 located at the end of the branch wire 2 in the first direction X. As shown in FIG.

Next, the operator provides the trunk connection region 13 in contact with the branch core wire 21 of the trunk core wire 11, and also provides the branch wire connection region 23 in contact with the trunk core wire 11 of the branch core wire 21. It electrically connects with the branch line 2 . After that, the worker covers the main line connection area 13 and the branch line connection area 23 with the protective portion 3 shown in FIG. That is, the cable 100 protects the main line connection area 13 and the branch line connection area 23 by covering the main line connection area 13 and the branch line connection area 23 with the protection part 3 .

Next, the worker attaches one of the first portion 4a and the second portion 4b of the first outer shell member 4 to the main line 1 and the branch line 2 provided with the protective portion 3 . Next, the worker attaches the remaining other of the first portion 4a and the second portion 4b to the main line 1 and the branch line 2 provided with the protection portion 3, and attaches the first portion 4a and the second portion A first outer shell member 4 having a space portion 4s therein is provided by engaging the claw portion 40b of the first outer shell member 4b with the recessed portion 40c. In this state, the core wire 11 is inserted through the first insertion opening 46a and the second insertion opening 46b of the first outer shell member 4, and a space portion 4s is formed inside in such a state that the core wire 11 is passed through the first outer shell member 4. . In the cable 100, the inner diameter of the first insertion opening 46a and the second insertion opening 46b and the outer diameter of the trunk core wire 11 are the same. Therefore, in the cable 100, there is no gap between the inner peripheral surface of the first outer shell member 4 and the outer peripheral surface of the trunk core wire 11 at the first insertion opening 46a and the second insertion opening 46b.

Next, the worker attaches either the first portion 5a or the second portion 5b of the second outer shell member 5 to the main line 1 and the branch line 2 provided with the protective portion 3 . Next, the worker attaches the remaining other of the first portion 5a and the second portion 5b to the main line 1 and the branch line 2 provided with the protective portion 3, and attaches the first portion 5a and the second portion 5b. A second outer shell member 5 having a space portion 5s therein is provided. In this state, in the second outer shell member 5, the trunk core wire 11 is inserted through the first insertion opening 56a and the second insertion opening 56b, and the branch core wire 21 is inserted through the first insertion opening 56a and the third insertion opening 56c. A space portion 5s is formed inside in a state in which the trunk core wire 11 and the branch wire core wire 21 are passed through. In addition, the cable 100 has the same inner diameter of the third insertion port 56c and the outer diameter of the trunk core wire 11 . Therefore, in the cable 100, no gap is generated between the inner peripheral surface of the second outer shell member 5 and the outer peripheral surface of the branch core wire 21 at the third insertion port 56c.

Next, the operator inspects the outer peripheral surface of the portion adjacent to the first outer shell member 4 in the main line 1, the outer peripheral surface of the first outer shell member 4, the outer peripheral surface of the protective portion 3, and the outer peripheral surface of the second outer shell member 5. A liquid synthetic resin material is applied to the outer peripheral surface of the portion of the main line 1 adjacent to the second outer shell member 5 and the outer peripheral surface of the portion of the branch line 2 adjacent to the second outer shell member 5 . The synthetic resin material is, for example, UV-curing, and a covering member 6 having waterproofness is provided on the outer peripheral surface of these members by curing the synthetic resin material by irradiating with UV rays. That is, the cable 100 includes the covering member 6 integrally provided so as to follow at least the shapes of the outer peripheral surface of the first outer shell member 4, the outer peripheral surface of the protective portion 3, and the outer peripheral surface of the second outer shell member 5. to form the connection portion 10 . In the ultraviolet irradiation device for irradiating ultraviolet rays, a plurality of light sources for irradiating ultraviolet rays are arranged along the circumferential direction so as to uniformly irradiate ultraviolet rays in the circumferential direction.

The covering member 6 includes a part of the outer peripheral surface of the main line 1, a part of the outer peripheral surface of the branch line 2, the outer peripheral surface of the first outer shell member 4, the outer peripheral surface of the second outer shell member 5, and the outer periphery of the protective member 3. cover the face In addition, the covering member 6 covers the boundary between the first outer shell member 4 and the main line covering portion 12a located on one side of the protection portion 3 in the first direction X. As shown in FIG. Furthermore, the covering member 6 covers mating surfaces of the first outer shell member 4 between the side ends in the second direction Y of the first portion 4a and the side ends in the second direction Y of the second portion 4b. Moreover, the covering member 6 covers the boundary between the first outer shell member 4 and the first protective end portion 3 a of the protective portion 3 . Furthermore, the covering member 6 covers the boundary between the second protective end portion 3 b of the protective portion 3 and the second outer shell member 5 . In addition, the covering member 6 covers a mating surface of the second outer shell member 5 between the side end in the second direction Y of the first portion 5a and the side end in the second direction Y of the second portion 5b. Furthermore, the covering member 6 covers the boundary between the second outer shell member 5 and the main line covering portion 12 a and the branch line covering portion 22 located on the other side of the protective portion 3 in the first direction X. As shown in FIG.

The cable 100 according to the present embodiment includes at least the outer peripheral surface of the first outer shell member 4, the outer peripheral surface of the protective portion 3, and the outer peripheral surface of the second outer shell member 5. A member 6 is provided. Therefore, in the cable 100 according to the present invention, it is not necessary to consider positional deviation when providing the covering member by molding, so the thickness of the covering member 6 can be reduced. As a result, the cable 100 according to the present invention can reduce the size of the connection portion 10 . Therefore, when inserting the cable 100 into the hole 7h (see FIG. 1) formed in the wall 7 at the construction site, the construction work can be facilitated. In particular, since the cable 100 has the main line 1 and the branch lines 2 arranged in the third direction Z, the height in the third direction Z is high. can be lowered. Therefore, when inserting the cable 100 into the hole 7h formed at the construction site, the height of the cable 100 in the third direction Z from the lower end to the upper end in the third direction Z can be reduced. As a result, it is possible to prevent the outer peripheral surface of the cable 100 from coming into contact with the inner peripheral surface of the hole 7h, which facilitates the work of inserting the cable 100 into the hole 7h at the construction site. Moreover, when the covering member is provided by molding, it takes a long time to cool the covering member because the thickness of the covering member is large. However, as described above, if the covering member 6 is made of an ultraviolet curable synthetic resin material, the curing time can be shortened. Moreover, since the outer peripheral surface of the trunk line 1 and the outer peripheral surface of the first outer shell member 4 are continuous, the thickness of the covering member 6 can be made uniform. Moreover, since the outer peripheral surface of the first outer shell member 4 and the outer peripheral surface of the protective portion 3 are continuous, the thickness of the covering member 6 can be made uniform. Furthermore, since the outer peripheral surface of the protective portion 3 and the outer peripheral surface of the second outer shell member 5 are continuous, the thickness of the covering member 6 can be made uniform. In addition, the outer peripheral surface of the second outer shell member 5, the outer peripheral surface of the main line covering portion 12b on one side (lower side) in the third direction Z, and the other side (upper side) of the branch line covering portion 22 in the third direction , the thickness of the covering member 6 can be made uniform.

The cable 100 according to this embodiment has the following configuration. The first outer shell member 4 has a space portion 4s formed therein through which the main core wire 11 penetrates, and the second outer shell member 5 has a state in which the main core wire 11 penetrates and the branch core wire 21 penetrates. 5 s of space parts are formed inside. As a result, the weight of the connection portion 10 of the cable 100 can be reduced, so that the construction work can be further facilitated.

The cable 100 according to this embodiment has the following configuration. In the branch line side wall portion 42 of the first outer shell member 4, the distance from the main line side wall portion 43 to the branch line side wall portion 42 in the third direction Z gradually increases from one side to the other side in the first direction X. incline so that In addition, the branch line side wall portion 42 of the second outer shell member 5 is such that the distance from the main line side wall portion 43 to the branch line side wall portion 42 in the third direction Z gradually increases from one side in the first direction X toward the other side. inclines to become larger. Therefore, the connection portion 10 as a whole has a tapered shape from one side to the other side in the first direction X. As shown in FIG. As a result, if the cable 100 according to the present embodiment is inserted into the hole 7h with one side in the first direction X as the leading end side at the construction site, the cable 100 can be inserted more easily. As a result, the cable 100 according to this embodiment can further facilitate the construction work at the construction site.

The cable 100 according to this embodiment has the following configuration. The covering member 6 is an ultraviolet curable synthetic resin material. In the cable 100 according to this embodiment, at least the outer peripheral surface of the first outer shell member 4, the outer peripheral surface of the protective part 3, and the outer peripheral surface of the second outer shell member 5 are coated with a liquid synthetic resin material, and then By curing the synthetic resin material by irradiating it with ultraviolet rays, the waterproof coating member 6 can be provided. Therefore, the waterproof coating member 6 can be easily provided.

In addition, the cable 100 of the embodiment described above has been described as having one main line 1 . However, the present invention is not limited to this, and two main lines 1 may be provided. More specifically, one trunk line 1 is arranged on one side of the protection section 3 in the first direction X, and another trunk line 1 is arranged on the other side of the protection section 3 in the first direction X. These trunk lines 1 may be arranged and the distal end portions of these trunk lines 1 may be joined together by, for example, ultrasonic welding or the like.

Moreover, the cable 100 of the embodiment described above has been described as having one branch line 2 . However, the present invention is not limited to this, and two branch lines 2 may be provided. More specifically, the cable 100 may have two branch lines 2 arranged on one side of the protection section 3 in the first direction X, and two branch lines 2 on the other side of the protection section 3 in the first direction X. A book branch line 2 may be arranged. The cable 100 has one branch line 2 arranged on one side of the protection portion 3 in the first direction X, and another branch line 2 on the other side of the protection portion 3 in the first direction X. may be placed.

Furthermore, in the cable 100 of the above-described embodiment, the coating member 6 is made of an ultraviolet curable synthetic resin material. However, the present invention is not limited to this, and the covering member 6 may be a heat-shrinkable tube. The heat-shrinkable tube is shrunk by being heat-treated, and the outer peripheral surface of a part of the main line 1, the outer peripheral surface of a part of the branch line 2, the outer peripheral surface of the first outer shell member 4, and the outer peripheral surface of the protective part 3. It covers the surface and the outer peripheral surface of the second outer shell member 5 .

Further, the cable 100 may be provided with a filler 8 between the main line 1 and the branch line 2 on the other side of the protective portion 3 in the first direction X. The filler 8 is, for example, a hot-melt adhesive, and is filled between the trunk line 1 and the branch line 2 before the second outer shell member 5 is provided on the trunk line 1 and the branch line 2 . The filling agent 8 is filled between the trunk line 1 and the branch line 2 to restrict the movement of the trunk line 1 and the branch line 2 to each other. Before the second outer shell member 5 is provided, the trunk line 1 and the branch line 2 may move in the second direction Y so as to be out of alignment with each other. can be restricted from moving in the second direction.

Further, the ultraviolet irradiation device may be provided with a reflecting mirror, or may be provided with a moving device for moving the light source for irradiating ultraviolet rays in the circumferential direction.

1 Trunk line 1a First trunk line coated end 1b Second trunk line coated end 10 Connection part 11 Trunk core wire 12 Trunk line coated part 13 Trunk connection area 14a First trunk line exposed area 14b Second trunk line exposed area 2 Branch line 21 Branch line core line 22 Branch line covered portion 23 Branch line connection region 24 Branch line exposed region 3 Protective portion 3a First protective end portion 3b Second protective end portion 4 First outer shell member 42 Branch line side wall portion 43 Trunk line side wall portion 4s Space portion 5 Second second outer shell member 52 branch line side wall portion 53 trunk line side wall portion 5s space portion 6 covering member X first direction (axial direction)
Y Second direction Z Third direction (arrangement direction)

Claims (4)

a trunk line extending in an axial direction, the trunk line having a trunk core wire and a trunk line covering portion covering the trunk core wire;
A branch wire having a branch wire core and a branch wire covering portion covering the branch wire core,
a connecting portion that electrically connects the main line and the branch line;
with
The connection part is
a protector covering a trunk connection region of the trunk core wire that contacts the branch core wire and a branch wire connection region of the branch core wire that contacts the trunk core wire;
a first outer shell member positioned between the main line covering portion positioned on one side of the protective portion in the axial direction and the protective portion;
the trunk line covering portion positioned on the other side of the protective portion in the axial direction, and a second outer shell member positioned between the branch wire covering portion and the protective portion ;
and a covering member having insulation,
The first outer shell member is divided into two parts, and the first outer shell first part and the first outer shell second part are formed in a cylindrical shape by combining the two parts along the opposing direction orthogonal to the axial direction. A first main line having two portions, wherein the first outer shell first portion and the first outer shell second portion of the cylindrical core wire are continuous with the main connection region and are exposed to the outside. cover exposed areas,
The second outer shell member has a second outer shell first part and a second outer shell second part which are divided into two parts and are combined in the facing direction to form a tubular shape. , the cylindrical second outer shell first portion and the second outer shell second portion are continuous with the trunk connection region of the trunk core wire and cover a second trunk exposed region exposed to the outside; and covering a branch wire exposed region continuous with the branch wire connection region of the branch wire core wire and exposed to the outside,
The covering member is integrally provided so as to follow the shape of at least the outer peripheral surface of the first outer shell member, the outer peripheral surface of the protective portion, and the outer peripheral surface of the second outer shell member.
A cable characterized by: The first outer shell member has a space formed therein in such a state that the trunk core wire penetrates,
A space is formed inside the second outer shell member in a state in which the trunk core wire and the branch core wire penetrate,
Cable according to claim 1. The first outer shell member has a pair of wall portions that are perpendicular to the facing direction and the axial direction and face each other in an arrangement direction in which the trunk line and the branch line are arranged,
The pair of wall portions has a branch line side wall portion positioned on the branch line side in the arrangement direction and a main line side wall portion positioned on the main line side when viewed from the axial direction,
the branch line sidewall portion is inclined such that the distance from the trunk line sidewall portion to the branch line sidewall portion in the arrangement direction gradually increases from one side to the other side in the axial direction;
The second outer shell member has a pair of walls facing each other in the arrangement direction,
The pair of wall portions has a branch line side wall portion positioned on the branch line side in the arrangement direction and a main line side wall portion positioned on the main line side when viewed from the axial direction,
The branch line sidewall portion is inclined such that the distance from the trunk line sidewall portion to the branch line sidewall portion in the arrangement direction gradually increases from one side to the other side in the axial direction.
Cable according to claim 1 or 2. The covering member is an ultraviolet curable synthetic resin material,
Cable according to any one of claims 1-3.

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