JP7340157B2 - connection sleeve - Google Patents

Description

The present invention relates to a connection sleeve for connecting electric wires to each other in electric wire equipment.

In electric wire equipment, connection sleeves are used, for example, to connect electric wires provided between utility poles. As shown in FIG. 10, the connection sleeve 4 includes a sleeve-shaped main body 40, and the main body 40 is made of aluminum. A partition wall W is formed at an intermediate position inside the main body 40, and the partition wall W and openings 41, 41 on both sides of the main body 40 provide an insertion path 42 for inserting the electric wires 5, 5 on both sides via the partition wall W. 42 is formed inside the main body 40. Further, on the outer peripheral surface 40a of the main body 40, compression marks 43 (for example, markings) for deforming (caulking) the main body 40 after the electric wires 5, 5 are inserted are spaced apart in the axial direction of the main body 40. Multiple pieces are formed.

When connecting the two electric wires 5, 5 using the connection sleeve 4 configured as described above, the operator cuts the insulation coatings 50, 50 of the two electric wire ends 5a, 5a to a predetermined length, respectively. The conductive wires 51, 51 are exposed by peeling them off, and one of the conductive wires 51 is inserted into the insertion path 42 from the opening 41. Then, the compression position P set between the compression marks 43 is sequentially deformed from the center of the main body 40 (the partition wall W side) toward one of the openings 41 to connect the main body 40 and the conducting wire 51. Regarding the connection between the main body 40 and the other conducting wire 51, the same operation as described above is performed, and the conducting wires 51, 51 are connected to each other by the main body 40 via the partition wall W.

However, at a work site, a worker visually determines the length of the insulation coatings 50, 50 of the wire ends 5a, 5a, that is, the lengths of the conductive wires 51, 51, and strips them off. For this reason, the length of the insulating coatings 50, 50 to be stripped off tends to become longer or shorter. In this case, even if the main body 40 is deformed, the connection between the main body 40 and the conductive wires 51, 51 will be poor.

For this reason, Patent Document 1 proposes a connection sleeve (sleeve for electric wire with an insulation coating layer) that is configured to be able to measure the stripping length of the insulation coating at the end of the electric wire, that is, the conductor area. As shown in FIG. 11, this connection sleeve 4A includes a main body 40A made of a metal cylinder whose outside is covered with an insulating coating layer, and a partition wall W is formed at an intermediate position inside the main body 40A. On the outer periphery (insulating coating layer) of the main body 40A, a plurality of compression marks 43A for deforming the main body 40A are formed spaced apart in the axial direction of the main body 40A, and on both sides of the partition wall W, as shown in FIG. Markings (band-shaped marks) 45A are arranged for measuring the conductive wire area of the conductive wires 51, 51 shown. In this connection sleeve 4A, the operator can peel off both insulation coatings 50, 50 to form a conductor area by aligning the conductor areas of the conductors 51, 51 with the markings 45A.

Japanese Patent Application Publication No. 2006-185902

In the connection sleeve 4A disclosed in Patent Document 1, the conductor areas of the conductors 51, 51 on both sides can be measured along the markings 45A. However, in this connection sleeve 4A, the marking 45A is provided on the insulating coating layer coated on the outside of the metal cylindrical body, so it is not possible to confirm the peeling length with respect to the cylindrical body. Therefore, there is a risk that the peeling length using the marking 45A will be incorrect, and there is room for improvement in this respect.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a connection sleeve that can reliably strip off the insulation coating of an electric wire to ensure connection.

In the connection sleeve of the present invention, an insertion path for inserting the conductor region made of a sleeve-shaped conductor is inserted into the conductor region where the conductor is exposed by peeling off the insulation coating at the end of the wire, through a partition wall provided in the center. The electric wire inserted into the insertion path on one side and the electric wire inserted on the other side are connected by compressing and deforming the main body in the radial direction. The connection sleeve has a protrusion that protrudes outward in the insertion direction at one end forming an insertion opening of the insertion path on at least one side, and the protrusion is formed when the main body is compressively deformed. The length is set to correspond to the length extending outward in the insertion direction, and the length from the partition wall to the outer edge of the protrusion in the insertion direction corresponds to the length of the conductor region. Features.

According to the connection sleeve configured as described above, the protrusion has a length corresponding to the extension of the main body when the main body is compressed and deformed, and the length from the partition wall to the outer edge of the protrusion is the length of the conductor region. For example, the end of the wire from which the insulation coating has been stripped (stripping area) can be aligned with the partition wall, and the length up to the outer edge of the protrusion can be stripped. You can reliably remove the appropriate length without making any mistakes.

According to the connection sleeve of the present invention, by stripping off the insulation coating in the stripping area by the length of the outer edge of the protruding portion from the partition wall, it is possible to reliably strip off the insulation coating by the required length and secure the connection. .

The connection sleeve of the present invention includes a main body made of a sleeve-shaped conductor having at least one insertion passage through which the conductor region of the electric wire is exposed by peeling off the insulation coating of the electric wire, and the insertion passage of the main body is At least one end in the insertion direction has a protrusion projecting outward in the insertion direction, and from the outer edge of the protrusion in the insertion direction to the other end in the insertion direction or the other end in the insertion direction of the main body. The length of the provided protrusion to the outer edge in the insertion direction corresponds to the length of the conductor region including the length extending outward in the insertion direction when the main body is compressed and deformed. It is characterized by the presence of

In the connection sleeve having this configuration, the length from the outer edge of the protrusion to the other side end of the main body or the outer edge of the other protrusion includes the extension of the main body when compressed and deformed. Since the length is set to the length of the conductor area, by stripping the insulation coating of the wire according to this length, it is possible to reliably strip the appropriate length without making a mistake in stripping the length.

According to the connection sleeve of the present invention, by stripping off the insulation coating of the wire according to the length from the outer edge of one protrusion to the other side end of the main body or the outer edge of the other protrusion, You can secure the connection by reliably stripping off the required length.

A protrusion is provided at one end in the insertion direction and the other end in the insertion direction of the main body, and the protrusion on one side corresponds to a length that extends in the one side in the insertion direction when the main body is compressed and deformed. A configuration may be adopted in which the protruding portion on the other side is set to have a length corresponding to a length extending toward the other side in the insertion direction when the main body is compressed and deformed. .

According to the connection sleeve configured as described above, the insulation coating of the electric wire is stripped off by the length from the outer edge of one protrusion to the outer edge of the other protrusion, and the conductor area is removed from the outer edge of one protrusion. By aligning it between the outer edge and the outer edge of the other protrusion and inserting it into the insertion path, the conductor region can be appropriately disposed after being reliably stripped to an appropriate length.

The connection sleeve of the present invention may be configured such that a stepped portion is provided at the boundary between the main body and the protruding portion to prevent insertion of the end portion of the insulating coating.

In the connection sleeve configured as described above, if the insulation coating is accidentally stripped short, the stepped portion prevents the end of the insulation coating from being inserted into the main body. .

According to the connection sleeve of the present invention, the length of the electric wire from the partition wall provided in the center of the main body to the outer edge of the protrusion that projects outward in the insertion direction from at least one end of the main body The insulation coating can be stripped off to ensure a secure connection between the main body and the conductor.

FIG. 1 is a plan view showing a straight tubular connection sleeve according to a first embodiment of the present invention. FIG. 2 is a side view of FIG. 1. FIG. 3 is a plan view showing a state in which the conductor at the end of the electric wire is inserted into the connection sleeve and a state in which the main body is expanded due to compression of the inserted conductor. FIG. 4 is a perspective view showing an H-shaped connection sleeve according to the second embodiment. FIG. 5 is a side view of FIG. 4. FIG. 6 is a side view showing a state in which the main wire and the branch wire are arranged in parallel and compressed in the H-shaped connection sleeve. FIG. 7 is a side view showing a C-shaped connection sleeve of the third embodiment. FIG. 8 is a front view of FIG. 7. FIG. 9 is a side view showing a state in which the main wire and the branch wire are arranged in parallel and compressed in a C-shaped connection sleeve. FIG. 10 is a diagram showing a conventional connection sleeve. FIG. 11 is a diagram showing a conventional sleeve for electric wires with an insulating coating layer.

A connection sleeve according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
First, a description will be given of a connection sleeve according to a first embodiment in which two conductor wires at ends of the wires are connected to the main body of the connection sleeve while being spaced apart from each other in the axial direction of the main body (wire insertion direction). As shown in FIGS. 1 and 2, the connection sleeve 1 according to the present embodiment includes a sleeve-shaped main body 10, and a one-side protrusion 11 that protrudes outward in the insertion direction at one end 10a of the main body 10. , the other side protrusion 12 is provided at the other side end 10b of the main body 10 and protrudes outward in the insertion direction.

The body 10 is made of a conductive metal, namely aluminum. The length of the main body 10 in the axial direction is, for example, 50 mm, and insertion paths 100, 100 for the conducting wires 51, 51 of the electric wires 5, 5 are formed inside the main body 10 from both sides. The diameter of the insertion paths 100, 100 is slightly larger than the outer diameter R01 of the conductive wires 51, 51, and smaller than the outer diameter R0 of the insulation coatings 50, 50 of the electric wires 5, 5 (outer diameter of the electric wire 5). Further, a partition wall W is formed at the center of the main body 10 in the axial direction to separate the insertion paths 100, 100. The main body 10 has the insertion passages 100, 100 on one side and the other side in the insertion direction with the partition wall W interposed therebetween. On the outer circumferential surface 10c of the main body 10, annular compression marks 102 are displayed at equal intervals along the outer circumferential surface 10c, except for the portion corresponding to the partition wall W. The space between each compression mark 102 is a compression region P in which the main body 10 is compressed using a predetermined compression tool. Note that the ends of the insertion paths 100, 100 are open ends (insertion openings) 101, 101.

The one side protrusion 11 is continuously formed in an annular shape at the one side end 10a of the main body 10 from the same material (made of aluminum) as the main body 10 (see FIG. 2). The outer diameter R1 of the one side protrusion 11 is larger than the outer diameter R of the main body 10. The axial length of the one side protrusion 11 is a protrusion length L1 (e.g. 10mm). The inner diameter R3 of the one side protrusion 11 (the diameter of the communication path 110) is slightly larger than the outer diameter R0 of the electric wire 5. The one side protrusion 11 forms a communication path 110 that communicates with the insertion path 100 of the main body 10 . The diameter R4 of the insertion path 100 is set to be slightly larger than the outer diameter R01 of the conducting wire 51, and the diameter R3 of the communicating path 110 of the one side protrusion 11 is set to be slightly larger than the outer diameter R0 of the electric wire 5. Therefore, the insertion path 100 and the one-side protrusion 11 are communicated with each other by a stepped portion 111 provided at the boundary between the insertion path 100 and the one-side protrusion 11 and extending in the radial direction.

The other side protrusion 12 is continuously formed in an annular shape at the other side end 10b of the main body 10 using the same material as the main body 10 (made of aluminum). The outer diameter R2 of the other side protrusion 12 is larger than the outer diameter R of the main body 10 (see FIG. 2). The length of the other side protrusion 12 in the axial direction is a protrusion length L2 (e.g. 10mm). The inner diameter R3 of the other side protrusion 12 (the inner diameter of the communication path 120) is slightly larger than the outer diameter R0 of the electric wire 5. The other side protrusion 12 forms a communication path 120 that communicates with the insertion path 100 of the main body 10 . The diameter R4 of the insertion path 100 is set to be slightly larger than the outer diameter R01 of the conducting wire 51, and the diameter R3 of the communication path 120 of the other side protrusion 12 is set to be slightly larger than the outer diameter R0 of the electric wire 5. Therefore, the insertion path 100 and the other side protrusion 12 communicate with each other through a stepped portion 121 provided at the boundary between the insertion path 100 and the other side protrusion 12 and extending in the radial direction.

In the connection sleeve 1 of this embodiment, the conductor areas (stripped areas) L01 and L02 where the conductor wires 51 and 51 are exposed by peeling off the insulation coatings 50 and 50 of the ends 5a and 5a of the two electric wires 5 and 5 are connected to the main body 10 of the connecting sleeve 1 while being spaced apart in the axial direction of the main body 10. For this reason, a scale 13 is provided for measuring the stripping length of the insulation coatings 50, 50 on the electric wires 5, 5 to expose the conducting wires 51, 51. That is, the scale 13 is for determining the conductor regions L01, L02 in which the conductors 51, 51 at the ends 5a of the electric wires 5, 5 are exposed. As the scale 13 in the connection sleeve 1, the main body 10, the protrusion 11 on one side, and the protrusion 12 on the other side are used. Specifically, in the electric wire 5, the tip 50a of one of the electric wires 5 is aligned with the one side measurement mark 130 displayed corresponding to the position of one side surface of the partition wall W, and the one side protrusion is formed from the tip 50a. The insulation coating 50 up to the opening end (outside edge in the insertion direction) 11a of the conductor wire 11 is stripped off to form one conductor region L01. In addition, in the electric wire 5, the tip 50a of the other electric wire 5 is aligned with the other side measurement mark 131 displayed corresponding to the position of the other side side surface next to the partition wall W, and the other side protrusion is formed from the tip 50a. The insulation coating 50 up to the opening end (outside edge in the insertion direction) 12a of the conductor wire 12 is stripped off to form the other conductive wire region L02.

Next, a method of using the connection sleeve 1 of the present invention will be explained. First, the operator measures the conductor area L01 of the end portion 5a of one electric wire 5. Specifically, the operator aligns the end 5a of one electric wire 5 along the axial direction of the main body 10, and aligns the end 5a of one electric wire 5 with the one side measurement mark 130 provided on the outer peripheral surface 10c of the main body 10. (the tip 50a of the insulating coating 50), and a predetermined portion of the wire end 5a (predetermined portion of the insulating coating 50) is positioned at the open end 11a of the protruding portion 11 on one side.

By positioning a predetermined portion of the end portion 5a of the electric wire 5 (a predetermined portion of the insulation coating 50) at the open end 11a of the one side protrusion 11, the predetermined portion of the insulation coating 50 becomes the end portion 50b, and both sections (insulation By peeling off the section from the tip 50a to the end 50b of the covering 50, the conductor 51 at the wire end 5a is exposed, forming a conductor region L01. At this time, the operator strips off the insulation coating 50 using a predetermined stripping tool.

After doing the above, the operator positions the conducting wire region L01 at the open end 11a of the one side protrusion 11, and inserts the conducting wire region L01 into the insertion path 100 up to the partition wall W. That is, the end 50b of the insulating coating 50 is located at the open end 11a of the one-side protrusion 11, and the tip 51a of the conductive wire 51 is inserted into a position where it abuts one side Wa of the partition wall W.

Next, as shown in FIG. 3, using a predetermined compression tool, the operator sequentially compresses the compression area P specified by the compression mark 102 from the center part (partition wall W side) to one end side of the main body 10. do.

Since the main body 10 is made of aluminum, the compression causes one end of the main body 10 to extend in one direction in the axial direction. However, in the conductor region L01, the tip 50a of one insulating coating 50 is placed against one side surface Wa of the partition wall W, and the end 50b of one insulating coating 50 is positioned at the open end 11a of the one side protrusion 11. It is located in Therefore, the conductor region L01 is adapted to the amount of axial expansion of the main body 10 due to compression. Specifically, when the main body 10 is expanded to one side in the axial direction due to compression deformation, the one-side protrusion 11 moves to the outside in the axial direction of the conductive wire region L01 and covers the outer peripheral side of the insulating coating 50. When the compressive deformation of the main body 10 is completed, the one side protrusion 11 moves from the end 50b of the insulation sheath 50 to a position covering the insulation sheath 50 on the axially outer side. Therefore, even if there is elongation in the axial direction due to compression, the main body 10 is deformed in all of the compression region P. Therefore, the connection between the conductor region L01 and the main body 10 is ensured. Further, when the main body 10 expands in the axial direction due to the compression, the inner diameter R3 of the protruding portion 11 on one side is set slightly larger than the outer diameter R0 of the electric wire 5, so that the insulation coating 50 on one side It can enter the inner diameter R3 of the side protrusion 11 (see FIG. 3).

Next, the operator measures the conductor area L02 of the other wire end 5a. Specifically, the operator aligns the end 5a of the other electric wire 5 along the axial direction of the main body 10, and aligns the end 5a of the other electric wire 5 with the other side measurement mark 131 provided on the outer peripheral surface 10c of the main body 10. (the tip 50a of the insulating coating 50), and a predetermined portion of the end 5a of the electric wire 5 (predetermined portion of the insulating coating 50) is positioned at the open end 12a of the other side protrusion 12, and the tip 50a to The insulation coating 50 in the section up to the end 50b is stripped off using a predetermined stripping tool to expose the conductor 51 at the end 5a of the electric wire 5, forming a conductor region L02. Thereafter, the conducting wire region L02 is positioned at the open end 12a of the other side protrusion 12, and the conducting wire region L02 is inserted into the insertion path 100 up to the partition wall W. That is, the end 50b of the insulating coating 50 is located at the open end 12a of the other side protrusion 12, and the tip 51a of the conductive wire 51 is inserted into a position where it abuts the other side surface Wb of the partition wall W.

Next, using a predetermined compression tool, the operator sequentially compresses the compression region P specified by the compression mark 102 from the central portion (partition wall W side) of the main body 10 toward the other end. This compression causes the other end side of the main body 10 to extend in the other axial direction. However, in the conductor region L02, the tip 50a of one insulation coating 50 is placed against one side surface Wb of the partition wall W, and the end 50b of the other insulation coating 50 is positioned at the open end 12a of the protrusion 12 on the other side. It is located in Therefore, the conductor region L02 is adapted to the amount of axial expansion of the main body 10 due to compression. Specifically, when the main body 10 is extended to the other side in the axial direction due to compression deformation, the other side protrusion 12 moves to the outside in the axial direction of the conductive wire region L02 and covers the outer peripheral side of the insulating coating 50. When the compression deformation of the main body 10 is completed, the other side protrusion 12 moves from the end 50b of the insulation sheath 50 to a position covering the insulation sheath 50 on the axially outer side.

In this embodiment, the length from the partition wall W to the one-side protrusion (or the other-side protrusion 12) 11 is the length from which the insulation coating 50 of the electric wire 5 is stripped. Note that the peeling length herein includes the length by which the main body 10 extends in one axial direction (or the other axial direction) when the main body 10 is compressed and deformed. Specifically, the axial length of the one-side protrusions 11 and 12 is set to a length that extends to one side (or the other side) when the main body 10 is compressed and deformed. Therefore, the connection sleeve 1 is applied to the electric wire 5, and the insulation coating 50 corresponding to the length from the partition wall (one side measurement mark 130) W to the axially outer edge (opening end 11a) of the one side protrusion 11 is stripped off. By doing so, the combined length of the main body 10 of the connection sleeve 1 and the length extending to one side due to compression deformation can be reliably stripped off. Note that the same applies to the other side protrusion 12.

As described above, according to the connection sleeve 1 of the present embodiment, the protrusions 11 and 12 have a length corresponding to the extension of the main body 10 when the main body 10 is compressed and deformed, and the protrusions 11 and 12 extend from the partition wall W. Since the length up to the outer edges 11a, 12a of the wires 12 corresponds to the lengths of the conductive wire regions L01, L02, for example, the end portions 5a of the electric wires 5 are aligned with the partition wall W, and the outer ends of the protrusions 11, 12 are It is possible to peel off only the length up to the edges 11a and 12a, and it is possible to reliably peel off the appropriate length without making a mistake in the length to be peeled off. In addition, by stripping the insulation coating 50 of the wire end portion 5a from the partition wall W by the length of the outer edges 11a, 12a of the protruding portions 11, 12, it is possible to securely strip off the insulation coating 50 by the required length and make the connection. Can be secured. Furthermore, since the end portion 50b of the insulation coating 50 does not enter the insertion path 100, 100 due to the stepped portions 111, 121, if the insulation coating 50 is accidentally stripped short, the end portion 50b of the insulation coating 50 may Insertion of the end portion 50b of the insulating sheath 50 into the main body 10 is prevented by blocking the insertion by the stepped portions 111 and 121, and deformation of the insulating sheath 50 due to deformation of the main body 10 is prevented. Connection between L02 and main body 10 is ensured.

(Second embodiment)
Next, an H-shaped connection sleeve of a second embodiment for connecting the main wire and the branch wire will be described. In the second embodiment, the main wire and the branch wires have the same diameter. As shown in FIGS. 4 and 5, the H-shaped connection sleeve 2 includes a horizontally elongated substantially rectangular main body 20, an upper end 20a on one side in the insertion direction of the main wire 5b and the branch wire 5c into the main body 20, and Upper protrusions 21, 21 protrude outward in the insertion direction at the upper end 20b on the other side in the direction, and lower protrusions 21, 21 protrude outward in the insertion direction at one lower end 20c and the other lower end 20d of the main body 20. It includes protrusions 22, 22. Note that one upper end 20a and the other upper end 20b of the main body 20 have the same configuration, and one lower end 20c and the other lower end 20d have the same configuration, so one The description of the upper protrusion 21 will also be used to explain the other upper protrusion 21, and the description of one lower protrusion 22 will also be used to explain the other lower protrusion 22. Further, upper protrusions 21, 21 protrude outward in the insertion direction at one upper end 20a and the other upper end 20b of the main body 20, and upper protrusions 21, 21 at one lower end 20c and the other lower end 20d. The lower protrusions 22, 22 protruding outward in the insertion direction have the same configuration except for the upward and downward directions, so the explanation of the upper protrusion 21 will also be used for the explanation of the lower protrusion 22.

The main body 20 is made of aluminum. The length of the main body 20 in the axial direction is, for example, 30 mm, and the main body 20 has a first insertion passage 200a through which the conductor 51b at the branch point of the main wire 5b is inserted in the longitudinal direction, and a wire end portion of the branch wire 5c. A second insertion passage 200b through which the conducting wire 51c of 50c is inserted in the longitudinal direction is arranged in parallel (arranged in parallel).

The first insertion passage 200a is a groove having a U-shaped cross section and formed along the longitudinal direction on the upper surface of the main body 20 (see FIG. 5). The first insertion passage 200a is slightly smaller than the length of the conductor 51b of the exposed main wire 5b (the length of the conductor region L03 described later), and the diameter R4 of the first insertion passage 200a is smaller than the diameter R01 of the conductor 51b. is also slightly larger. The first insertion passage 200a includes an opening 201a that opens on the upper side in the transverse direction, and open ends 201b, 201b at both ends in the longitudinal direction. Of the two opening edges 202a, 202a of the opening 201a, one opening edge 202a that is continuous with the outer surface of the main body 20 has a bent piece 203a extending outward from the opening edge 202a. It is prominent.

The bent piece 203a has a size that can close the opening 201a, and is configured to be bent toward the other opening edge 202a with one opening edge 202a as a fold. 203a is bent to close the first insertion passage 200a, forming a sleeve shape. On the outer surface 204a of the folded piece 203a, a plurality of linear compression marks 205a extend from the fold line (one opening edge 202a) toward the vicinity of the end of the folded piece 203a. The compression marks 205a are displayed at equal intervals along the longitudinal direction of the main body 20. The space between each compression mark 205a is a compression region P in which the main body 20 is compressed using a tool.

The second insertion passage 200b is a groove having a U-shaped cross section and formed along the longitudinal direction on the lower surface of the main body 20 (see FIG. 5). The second insertion passage 200b is slightly smaller than the length of the conductor 51c of the exposed branch electric wire 5c (the length of the conductor region L04 described later), and the diameter R4 of the second insertion passage 200b is the diameter R0 of the conductor 51c. slightly larger than The second insertion passage 200b includes an opening 201c that opens on the lower surface in the lateral direction, and open ends 201d, 201d at both ends in the longitudinal direction. Of the two opening edges 202b, 202b of the opening 201c, one opening edge 202b that is continuous with the outer surface of the main body 20 has a bent piece 203b extending outward from the opening edge 202b. It is prominent.

The bent piece 203b has a size that can close the opening 201c, and is configured to be bent toward the other opening edge 202b using one opening edge 202b as a crease. On the outer surface 204b of the folded piece 203b, linear compression marks 205b are displayed at regular intervals along the longitudinal direction of the main body 20, as described above, and a compression area P is defined between each compression mark 205b. The main body 20 becomes sleeve-shaped by bending the bent piece 203a to close the first insertion passage 200a and by bending the bent piece 203b to close the second insertion passage 200b.

One upper protrusion 21 is formed continuously at one upper end 20a of the main body 20 from the same material as the main body 10 (made of aluminum) and has a U-shaped cross section (see FIG. 5). As shown in FIGS. 4 and 5, the inner diameter R3 of the upper protrusion 21 (the diameter of the first continuous passage 210) is slightly larger than the outer diameter R0 of the main line 5b. The upper protrusion 21 has a first continuous passage 210 that communicates with the first insertion passage 200a of the main body 20. The diameter R4 of the first insertion passage 200a is slightly larger than the diameter R01 of the conducting wire 51b, and the diameter R3 of the first continuous passage 210 of one upper protrusion 21 is set slightly larger than the diameter R0 of the main wire 5b. has been done. Therefore, the first insertion passage 200a and one of the upper protrusions 21 communicate with each other through a stepped portion 211 extending in the radial direction. An upper protrusion 21 having the same structure as described above is also formed on the other upper end 20b of the main body 20. The length in the axial direction of one of the upper protrusions 21 is a protrusion length L3 (e.g., 5 mm), which is the length (expansion allowance) equivalent to the length (expansion allowance) that extends to one side in the axial direction when the main body 20 is compressed and deformed. ing.

One of the lower protrusions 22 is formed continuously at one lower end 20c of the main body 20 from the same material as the main body 20 (made of aluminum) and has a U-shaped cross section (see FIG. 5). As shown in FIGS. 4 and 5, the inner diameter R3 of one of the lower protrusions 22 (the diameter of the second insertion passage 200b) is slightly larger than the outer diameter R0 of the branch electric wire 5c. One of the lower protrusions 22 has a second communication passage 220 that communicates with the second insertion passage 200b of the main body 20. The diameter R4 of the second insertion passage 200b is slightly larger than the outer diameter R01 of the conducting wire 51c, and the diameter R3 of the second communication passage 220 in the axial direction of the other lower protrusion 22 is larger than the outer diameter R01 of the conducting wire 51c. is also set slightly larger. Therefore, the second insertion passage 200b and the other lower protrusion 22 communicate with each other through the stepped portion 221 along the radial direction. A lower protrusion 22 having the same configuration as described above is also formed on the other lower end 20d of the main body 20. The length in the axial direction of one of the lower protrusions 22 is a protrusion length L4 (e.g., 5 mm), which is the length (expansion allowance) corresponding to the length (extension allowance) that is elongated to one side in the axial direction when the main body 20 is compressed and deformed. It has become.

In the connection sleeve 2, the conductor 51b of the main wire 5b (conductor region L03 to be described later) and the conductor 51c (conductor region L04 to be described later) of the branch electric wire 5c are arranged parallel to the main body 20 of the connection sleeve 2. Connect with. Therefore, the first scale 23 for exposing the conductor 51b is measured by measuring the length of stripping off the insulation coating 50b of the main wire 5b, and the length of stripping off the insulation coating 50c of the branch wire 5c is measured. A second scale 24 for exposing 51c is provided.

That is, the first scale 23 determines the conductor region L03 that exposes the conductor 51b in the middle of the main wire 5b, and the second scale 24 determines the conductor region L04 that exposes the conductor 51c at the wire end 50ca of the branch wire 5c. It is for deciding. As the first scale 23 in the connection sleeve 2, one upper protrusion 21 and the other upper protrusion 21 are used. Specifically, the middle part of the main line 5b is connected between the open end (outer edge in the insertion direction) 21a of one upper protrusion 21 and the open end (outer edge in the insertion direction) 21a of the other upper protrusion 21. The insulation coating 50b between the opening end 21a and the opening end 21a is peeled off to form one conducting wire region L03.

As the second scale 24 in the connection sleeve 2, one lower projection 22 and the other lower projection 22 are used. Specifically, the tip 50c1 of the branch electric wire 5c is located at the open end (outside edge in the insertion direction) 22a of one of the lower protrusions 22, and the insulation coating is applied to the open end 22a of the other lower protrusion 22. 50c is peeled off to form the other conductive wire region L04.

A method of using the connection sleeve 2 having the above configuration will be explained. As the overall flow of the connection work, the worker measures the conductor area L03 at the branch point of the main line 5b, then measures the conductor area L04 of the branch electric wire 5c, and then measures the conductor area L03 at the branch point of the main line 5b and the branch electric wire. The conducting wire region L04 of 5c is compressed using a predetermined compression tool. First, the case of measuring the conducting wire region L03 will be explained. The operator aligns the branch point of the main line 5b in the axial direction of the main body 20, positions one end 50b1 of the branch point of the main line 5b on the open end 21a of one upper protrusion 21, and places the other end 50b2 on the other side. The conductor 51b of the main wire 5b is exposed by positioning it at the open end 21a of the upper protrusion 21 and peeling off both sections (the section from one end 50b1 to the other end 50b2 of the insulation coating 50b of the main wire 5b). This can be used as the conductive wire region L03. At this time, the operator strips off the insulation coating 50b using a predetermined stripping tool.

After doing the above, the operator places the conductive wire region L03 from which the insulation coating 50b has been removed between the one side and the other open end 21a. Specifically, one end 50b1 of the insulation coating 50b is located at the open end 21a of one of the upper protrusions 21, and the other end 50b2 of the insulation coating 50b is located at the open end 21a of the other upper protrusion 21. , the conductor region L03 is fitted into the first insertion passage 200a and inserted therethrough.

Next, when measuring the conductor area L04 of the branch electric wire 5c, the operator aligns the electric wire end 50ca of the branch electric wire 5c in the axial direction of the main body 20, and attaches the branch electric wire to the open end 22a of the lower protrusion 22. The tip 50c1 of the insulation coating 50c of 5c is positioned, and the end 50c2 is positioned at the open end 22a of the other lower protrusion 22.

The insulating coating 50c in the section from the tip 50c1 to the end 50c2 is stripped off using a predetermined stripping tool to expose the conductive wire 51c, forming a conductive wire region L04. Thereafter, both ends of the conductor region L04 are positioned between the open end 22a of one lower protrusion 22 and the open end 22a of the other lower protrusion 22, and the conductor region L04 is fitted and inserted.

Next, the compression work will be explained. Using a predetermined compression tool, the operator sequentially compresses the compression region P specified by the compression mark 205a from the center of the main body 20 toward one end, and then compresses the compression region P from the center of the main body 20 toward the other end. Each compression area P is compressed sequentially. At this time, as shown in FIG. 6, the bent piece 203a closes the first insertion passage 200a.

Since the main body 20 is made of aluminum, one end of the main body 20 extends in the axial direction due to the compression. However, in the conductor region L03, one end 50b1 of the insulation coating 50 is located at the open end 21a of one upper protrusion 21, and the other end 50b2 is located at the open end 21a of the other upper protrusion 21. It is located. Therefore, the conductor region L03 is adapted to the amount of axial expansion of the main body 20 due to compression. Specifically, when the main body 20 is extended to one side in the axial direction due to compressive deformation, one of the upper protrusions 21 moves to the outside in the axial direction of the conductive wire region L03 and extends to the outer peripheral side of the insulating coating 50b. Further, when the main body 20 extends to the other side in the axial direction, the other upper protrusion 21 moves to the outer side in the axial direction of the conductive wire region L03, and extends to the outer peripheral side of the insulating coating 50b. When the compressive deformation of the main body 20 is completed, one upper protrusion 21 is in a position to cover the outer insulation sheath 50b in the axial direction from one end 50b1 of the insulation sheath 50b, and the other upper protrusion 21 is positioned to cover the insulation sheath 50b from one end 50b1 of the insulation sheath 50b. from the other end 50b2 until it reaches a position covering the outer insulation coating 50b in the axial direction. Therefore, even if there is elongation in the axial direction due to compression, the main body 20 is deformed in all of the compression region P. Therefore, the connection between the conductor region L03 and the main body 20 is ensured. Further, when the main body 20 is expanded in the axial direction due to the compression, the inner diameter R3 of the upper protrusion 21 and the other upper protrusion 21 is set to be slightly larger than the outer diameter R0 of the main line 5b. Therefore, one end 50b1 of the insulation coating 50b enters the inner diameter R3 of one of the upper protrusions 21, and the other end 50b2 of the insulation coating 50b enters the inner diameter R3 of the other upper protrusion 21.

The compression region P specified by the compression mark 205a is compressed by the predetermined compression tool, and at the same time, the compression region P specified by the compression mark 205b is sequentially compressed from the center of the main body 20 toward one end side, Thereafter, each compression area P is sequentially compressed from the center of the main body 20 toward the other end. By doing so, as shown in FIG. 6, the bent piece 203b closes the second insertion passage 200b. At this time, as described above, the conductor region L04 is adapted to the amount of axial expansion of the main body 20 due to compression. Specifically, when the main body 20 is extended to the other side in the axial direction due to compressive deformation, the other lower protrusion 22 moves to the outside in the axial direction of the conductive wire region L04 and extends to the outer circumferential side of the insulation coating 50c. Further, when the main body 20 extends to the other side in the axial direction, the other lower protrusion 22 moves to the outer side in the axial direction of the conductive wire region L04, and extends to the outer peripheral side of the insulation coating 50c. When the compressive deformation of the main body 20 is completed, the other lower protrusion 22 is in a position to cover the outer insulating sheath 50c in the axial direction from the other end 50c2 of the insulating sheath 50c, and the other lower protrusion 22 is It moves from the other end 50c2 of the insulation coating 50 to a position covering the outer insulation coating 50c in the axial direction. Therefore, even if there is elongation in the axial direction due to compression, the main body 20 is deformed in all of the compression region P. Therefore, the connection between the conductor region L04 and the main body 20 is ensured. Further, when the main body 20 expands on one side in the axial direction due to the compression, the conducting wire 51c enters the inner diameter of the first continuous passage 210 of one of the lower protrusions 22, and the tip 51ca of the conducting wire 51c It is located at the opening end 201d on one side.

In the second embodiment, the length between the opening end (outer edge in the insertion direction) 21a of one upper protrusion 21 and the opening end (outer edge in the insertion direction) 21a of the other upper protrusion 21 is , the length is such that the insulation coating 50b of the main wire 5b is stripped off. Note that the peeling length herein includes the length of the main body 20 extending in the axial direction due to compressive deformation. Specifically, the length of one upper protrusion 21 (the other upper protrusion 21) is set to the length (expansion allowance) by which the main body 20 extends to one side (the other side) due to compressive deformation. Therefore, when the connecting sleeve 2 is applied to the main wire 5b, the length of the upper protrusion 21 is set to such a length that the main body 20 extends to one side (the other side) due to compressive deformation. Therefore, by applying the connection sleeve 2 to the main wire 5b and peeling off the insulation coating 50b corresponding to the length from the open end 21a of one upper protrusion 21 to the open end 21a of the other upper protrusion 21, the connection sleeve 2 is removed. The combined length of the main body 20 of No. 2 and the length of the main body 20 extending to both sides in the axial direction due to compressive deformation can be reliably removed. Note that the same applies to the lower protrusion 22.

According to the connection sleeve 2 of this embodiment, the length of the conductor region L03 from the outer edge 21a of one upper protrusion 21 to the outer edge 21a of the other upper protrusion 21 is compressed and deformed. Since the length of the conductor area L03 is set to include the extension of the main body 20 of It can be removed by just the desired length. In addition, by stripping off the insulation coating 50c of the branch electric wire 5c according to the length from the outer edge 21a of one upper protrusion 21 to the outer edge 21a of the other upper protrusion 21, the required length can be removed. You can secure the connection by peeling it off. Moreover, since one end 50b1 and the other end 50b2 of the insulation coating 50b do not enter the first insertion passage 200a due to the stepped parts 211, 211, if the insulation coating 50b is accidentally stripped short, the insulation coating The stepped portions 211, 211 prevent the end of the conductor region L03 from being inserted into the main body 20, and the end of the insulating sheath 50c is prevented from being deformed as the main body 20 deforms. This is prevented, and the connection between the conductor region L03 and the main body 20 is ensured.

In addition, the length of the conductive wire region L04 from the outer edge 22a of one lower protrusion 22 to the outer edge 22a of the other lower protrusion 22 corresponds to the extension of the main body 20 when compressed and deformed. Since the length is set to the length of the conductor area L04 including the conductor area L04, by stripping the insulation coating 50b of the main wire 5b according to this length, it is possible to ensure that the appropriate length is stripped without making a mistake in stripping the length. be able to. In addition, by stripping off the insulation coating 50c of the branch electric wire 5c according to the length from the outer edge 22a of one lower protrusion 22 to the outer edge 22a of the other lower protrusion 22, the required length can be obtained. You can secure the connection by peeling off just a small amount. Furthermore, since the end portion 50c2 of the insulation coating 50c does not enter the second insertion path 200b due to the stepped portion 221, if the insulation coating 50c is accidentally stripped short, the end portion of the conductor area L04 in the insulation coating 50c The stepped portion 221 prevents the end of the insulation coating 50c from being inserted into the main body 30, and the insulation coating 50c is prevented from being deformed due to the deformation of the main body 30. connection is secured. Further, the tip 51ca of the conducting wire 51c is located at the opening 201d on one side of the main body 20 due to the extension of the main body 20.

(Third embodiment)
Next, a C-shaped connection sleeve according to a third embodiment that connects the main line and the branch electric wire will be described. As shown in FIGS. 7 and 8, the C-shaped sleeve 3 includes a main body 30 that is substantially C-shaped in side view, an upper end 30a on one side in the insertion direction of the main body 30, and an upper end on the other side in the insertion direction. Upper protrusions 31, 31 protrude into the section 30b, and lower protrusions 32, 32 protrude from the lower end 30c on one side of the main body 30 in the insertion direction and the lower end 30d on the other side in the insertion direction. Equipped with. Note that the protrusions 31, 31 are connected to one upper end 30a and the other upper end 30b of the main body 30, and the lower end 30c and 30d of the main body 30 are respectively connected to each other. Since the consecutively arranged protrusions 32, 32 have the same configuration, the explanation of one upper and lower protrusions 31, 32 will also be used for the explanation of the other upper and lower protrusions 31, 32.

The main body 30 is made of aluminum. The length of the main body 30 in the axial direction is, for example, 35 mm, and the main body 30 includes bent pieces 33 and 34 that are bent inwardly into semicircular shapes. The upper bent piece 33 has a diameter R4 that is slightly larger than the outer diameter R01 of the conducting wire 51b of the main line 5b, and the upper bent piece 33 forms a first insertion passage 300a through which the conducting wire 51b can be inserted. There is. The lower bending piece 34 has a diameter R4 slightly larger than the outer diameter R01 of the conductor 51c of the branch electric wire 5c, and the lower bending piece 34 allows the second conductor 51c of the branch electric wire 5c to be inserted. An insertion passage 300b is formed.

The first insertion passage 300a is slightly smaller than the length of the conductor 51b of the exposed main wire 5b (the length of the conductor area L03 described later), and the diameter R4 of the first insertion passage 300a is smaller than the diameter R01 of the conductor 51b. is also slightly larger. The first insertion passage 300a includes an opening 301a formed along the longitudinal direction, and open ends 301b, 301b on both sides in the longitudinal direction.

The second insertion passage 300b is slightly smaller than the length of the conductor 51c of the exposed branch electric wire 5c (the length of the conductor region L04 described later), and the diameter R4 of the second insertion passage 300b is the diameter R01 of the conductor 51c. slightly larger than The second insertion passage 300b includes an opening 301c formed along the longitudinal direction, and open ends 301d, 301d on both sides in the longitudinal direction. Both insertion passages 300a and 300b extend in the same direction and communicate in the upper and lower central regions.

On the outer surface of each bent piece 33, 34, a plurality of compression marks 303 extend from a center line passing through the deepest part of each insertion passage 300a, 300b in the longitudinal direction toward the vicinity of the inward end 302a, 302b. . The compression marks 303 are displayed at equal intervals along the longitudinal direction of the main body 30. The space between each compression mark 303 is a compression area P in which the main body 30 is compressed using a tool. An opening S communicating with each insertion passage 300a, 300b is formed between the inward ends 302a, 302b.

One upper protrusion 31 is continuously formed at one upper end 30a of the main body 30 from the same material (made of aluminum) as the main body 30, and has a U-shaped cross section. The inner diameter R3 of one of the upper protrusions 31 is slightly larger than the outer diameter R0 of the main line 5b. The upper protrusion 31 has a first continuous passage 310 that communicates with the first insertion passage 300a of the main body 30. The diameter R4 of the first insertion passage 300a is slightly larger than the outer diameter R01 of the conducting wire 51b, and the diameter R3 of the first continuous passage 310 of the upper protrusion 31 is slightly larger than the outer diameter R0 of the main wire 5b. It is set large. Therefore, the first insertion passage 300a and one of the upper protrusions 31 are communicated with each other through a stepped portion 311 that extends in the radial direction and is provided at the boundary between the first insertion passage 300a and one of the upper protrusions 31. An upper protrusion 31 having the same structure as described above is also formed on the other upper end 30b of the main body 30. The length in the axial direction of one of the upper protrusions 31 is a protrusion length L5 (e.g., 3 mm), which is the length (expansion allowance) corresponding to the length (expansion allowance) that is extended to one side in the axial direction when the main body 30 is compressively deformed. ing.

One lower protrusion 32 is continuously formed at one lower end 30c of the main body 30 from the same material (made of aluminum) as the main body 30, and has a U-shaped cross section. An inner diameter R3 of one of the lower protrusions 32 is formed to be slightly larger than an outer diameter R0 of the branch electric wire 5c. The lower protrusion 32 has a second communication passage 320 that communicates with the second insertion passage 300b of the main body 30. The diameter R4 of the second insertion passage 300b is slightly larger than the diameter R01 of the conducting wire 51c, and the diameter R3 of the second communication passage 320 of the other lower protrusion 32 is slightly larger than the diameter R0 of the branch electric wire 5c. It is set. Therefore, the second insertion passage 300b and the other lower protrusion 32 communicate with each other through a stepped portion 321 along the radial direction provided at the boundary between the second insertion passage 300b and the other lower protrusion 32. . A lower protrusion 32 having the same configuration as described above is also formed at the other lower end 30d of the main body 30. The length in the axial direction of one of the lower protrusions 32 is a protrusion length L6 (e.g., 3 mm), which is the length (extension allowance) corresponding to the length (expansion allowance) that is extended to one side in the axial direction when the main body 30 is compressed and deformed. It has become.

In the connection sleeve 3, the conductor 51b (conductor area L03) of the main wire 5b and the conductor 51c (conductor area L04 to be described later) of the branch electric wire 5c are connected in a state where they are arranged parallel to the main body 30 of the connection sleeve 3. do. Therefore, the first scale 35 for exposing the conductor 51b is measured by measuring the stripping length of the insulation coating 50b of the main wire 5b, and the stripping length of the insulation coating 50c of the branch wire 5c is measured. A second scale 36 for exposing 51c is provided.

The first scale 35 determines a conductor region L03 that exposes the conductor 51b in the middle of the main wire 5b, and the second scale 36 determines a conductor region L04 that exposes the conductor 51c at the wire end 50c of the branch wire 5c. It is for. As the first scale 35 in the connection sleeve 3, one upper protrusion 31 and the other upper protrusion 31 are used. Specifically, the middle portion of the main line 5b is inserted between the opening end (outer edge in the insertion direction) 31a of one upper protrusion 31 and the opening end (outer edge in the insertion direction) 31a of the other upper protrusion 31. The insulation coating 50b between the open ends 31a and 31a on one side and the other side is peeled off to form one conductor area L03.

As the second scale 36 in the connection sleeve 3, one lower protrusion 32 and the other lower protrusion 32 are used. Specifically, the tip 50c1 of the branch electric wire 5c is positioned at the open end (outer edge in the insertion direction) 32a of one of the lower protrusions 32, and the insulation coating is applied to the open end 32a of the other lower protrusion 32. 50c is peeled off to form the other conductive wire region L04.

A method of using the connection sleeve 3 having the above configuration will be explained. As the overall flow of the connection work, the worker measures the conductor area L03 at the branch point of the main line 5b, then measures the conductor area L04 of the branch electric wire 5c, and then measures the conductor area L03 at the branch point of the main line 5b and the branch electric wire. The conducting wire region L04 of 5c is compressed using a predetermined compression tool. When first measuring the conductor area L03, the operator aligns the branch point of the main line 5b in the axial direction of the main body 30, and positions the one end 50b1 of the main line 5b at the opening end 31a of one of the upper protrusions 31. , by positioning the other end 50b2 at the open end 31a of the other upper protrusion 31 and stripping off both sections (the section from one end 50b1 to the other end 50b2 of the insulation coating 50b of the main line 5b). The conducting wire 51b of the main line 5b is exposed and can be used as a conducting wire region L03. At this time, the operator strips off the insulation coating 50b using a predetermined stripping tool.

After doing the above, the operator places the conductive wire area L03 from which the insulation coating has been removed between the one and the other open ends 31a, 31a. Specifically, one end 50b1 of the insulation coating 50b is located at the open end 31a of one of the upper protrusions 31, and the other end 50b2 of the insulation coating 50b is located at the open end 31a of the other upper protrusion 31. , the conductor region L03 is fitted into and inserted into the first insertion path 300a.

Next, when measuring the conductor area L04, the operator places the wire end 50ca of the branch wire 5c along the axial direction of the main body 30, and inserts the insulation of the branch wire 5c into the open end 22a of the lower protrusion 22. The tip 50c1 of the coating 50c is positioned, and the end 50c2 of the insulation coating 50 is positioned at the open end 22a of the other lower protrusion 22.

The insulation coating 50c in the section from the tip 50c1 to the end 50c2 of the insulation coating 50c is stripped off using a predetermined stripping tool to expose the conductive wire 51c and form a conductive wire region L04. Thereafter, both ends of the conductive wire region L04 are positioned between the open end 32a of one lower protrusion 32 and the open end 32a of the other lower protrusion 32, and the conductor region L04 is positioned relative to the second insertion passage 200b. Insert and insert.

Next, the compression work will be explained. Using a predetermined compression tool, the operator sequentially compresses the compression area P specified by the compression mark 303 from the center of the main body 30 toward one end, and then compresses the compression region P from the center of the main body 30 toward the other end. Each compression area P is compressed sequentially. At this time, as shown in FIG. 9, the upper bending piece 33 is bent inward, and the conducting wire 51b is held between the bending pieces 33.

Since the main body 30 is made of aluminum, one end of the main body 30 extends in the axial direction due to the compression. However, in the conductor region L03, one end 50b1 of the insulation coating 50 is located at the open end 31a of one upper protrusion 31, and the other end 50b2 is located at the open end 31a of the other upper protrusion 31. It is located. Therefore, the conductor region L03 is adapted to the amount of axial expansion of the main body 30 due to compression. Specifically, when the main body 30 is extended to one side in the axial direction due to compressive deformation, one upper protrusion 31 moves to the outside in the axial direction of the conductive wire region L03 and extends to the outer peripheral side of the insulation coating 50b. Further, when the main body 30 extends to the other side in the axial direction, the other upper protrusion 31 moves to the outer side in the axial direction of the conductive wire region L03, and extends to the outer peripheral side of the insulation coating 50b. When the compression deformation of the main body 30 is completed, one upper protrusion 31 is in a position to cover the outer insulation sheath 50b in the axial direction from one end 50b1 of the insulation sheath 50b, and the other upper protrusion 31 is positioned to cover the insulation sheath 50b from one end 50b1 of the insulation sheath 50b. from the other end 50b2 until it reaches a position covering the outer insulation coating 50b in the axial direction. Therefore, even if there is elongation in the axial direction due to compression, the main body 30 is deformed in all of the compression region P. Therefore, the connection between the conductor region L03 and the main body 30 is ensured. Further, when the main body 30 is expanded in the axial direction due to the compression, the inner diameter R3 of the upper protrusion 31 and the other upper protrusion 31 are set to be slightly larger than the outer diameter R0 of the main line 5b. Therefore, one end 50b1 of the insulation coating 50b enters the inner diameter of one of the upper protrusions 31, and the other end 50b2 of the insulation coating 50b enters the inner diameter of the other upper protrusion 31.

On the other hand, by the predetermined compression tool, the lower bent piece 34 is also bent inward at the same time as the upper bent piece 33, and the conducting wire 51c is held between the bent pieces 34. The conductor region L04 is adapted to the amount of axial expansion of the main body 30 due to this compression. Specifically, when the main body 30 extends toward the other side in the axial direction due to compressive deformation, the other lower protrusion 32 moves toward the outer side in the axial direction of the conducting wire region L04 and extends toward the outer circumferential side of the insulation coating 50c. Further, when the main body 30 extends to the other side in the axial direction, the other lower protrusion 32 moves to the outer side in the axial direction of the conductive wire region L04, and extends to the outer peripheral side of the insulation coating 50c. When the compression deformation of the main body 30 is completed, one lower protrusion 32 is in a position to cover the tip 51ca of the conducting wire 51c, and the other lower protrusion 32 is in a position to cover the end 50c2 of the insulation coating 50c. Moving. Therefore, even if there is elongation in the axial direction due to compression, the main body 30 is deformed in all of the compression region P. Therefore, the connection between the conductor region L04 and the main body 30 is ensured. Further, when the main body 30 expands in the axial direction due to the compression, the end c2 of the insulating coating 50c enters the inner diameter of the second communication passage 320 of the other lower protrusion 32, and the tip 51ca of the conducting wire 51c It is located at the open end 301d of the second insertion passage 300b.

In the third embodiment, the length from the open end (outer edge in the insertion direction) 31a of one upper protrusion 31 to the open end (outer edge in the insertion direction) 31a of the other upper protrusion 31 is , the length is such that the insulation coating 50b of the main wire 5b is stripped off. Note that the peeling length referred to here includes the length of the main body 30 extending in the axial direction due to compressive deformation. Specifically, the length of one upper protrusion 31 (the other upper protrusion 31) is set to the length (expansion allowance) by which the main body 30 extends to one side (other side) due to compressive deformation. Therefore, when the connecting sleeve 3 is applied to the main wire 5b, the length of the upper protrusion 31 is set to such a length that the main body 30 extends to one side (the other side) due to compressive deformation. Therefore, by applying the connection sleeve 3 to the main wire 5b and peeling off the insulation coating 50b corresponding to the length from the open end 31a of one upper protrusion 31 to the open end 31a of the other upper protrusion 31, the connection sleeve 3 is removed. The total length of the main body 30 of No. 3 and the length of the main body 30 extending to both sides in the axial direction due to compressive deformation can be reliably removed. Note that the same applies to the lower protrusion 32.

Thus, according to the connection sleeve 3 of the third embodiment, the length of the conductor region L03 from the outer edge 31a of one upper protrusion 31 to the outer edge 31a of the other upper protrusion 31 is as follows: Since the length of the conductor region L03 is set to include the extension of the main body 30 when it is compressed and deformed, by stripping the insulation coating 50b of the main wire 5b according to this length, the length to be stripped is incorrect. You can reliably remove the appropriate length without any problems. In addition, by stripping the insulation coating 50c of the branch electric wire 5c according to the length from the outer edge 31a of one upper protrusion 31 to the outer edge 31a of the other upper protrusion 31, the required length can be removed. You can secure the connection by peeling it off. Furthermore, since one end 50b1 and the other end 50b2 of the insulation coating 50b do not enter the first insertion passage 300a due to the stepped portions 311, 311, if the insulation coating 50b is accidentally stripped short, the insulation coating The stepped portions 311, 311 prevent the ends of the conductive wire region L03 from being inserted into the main body 30, and the deformation of the insulating sheath 50b due to the deformation of the main body 30 is prevented. This is prevented, and the connection between the conductor region L03 and the main body 30 is ensured.

In addition, the length of the conductive wire region L04 from the outer edge 32a of one lower protrusion 32 to the outer edge 32a of the other lower protrusion 32 corresponds to the extension of the main body 30 when compressed and deformed. Since the length is set to the length of the conductor area L04 that includes the wire, by stripping the insulation coating 50c of the branch wire 5c according to this length, you can ensure that the appropriate length is stripped without making a mistake in stripping the length. You can take it. In addition, by stripping the insulation coating 50c of the branch electric wire 5c according to the length from the outer edge 32a of one lower protrusion 32 to the outer edge 32a of the other lower protrusion 32, the necessary length can be obtained. You can secure the connection by peeling off just a small amount. Furthermore, since the end portion 50c2 of the insulation sheath 50c does not enter the second insertion path 300b due to the stepped portion 321, if the insulation sheath 50c is accidentally stripped short, the end portion 50c2 of the conductor region L04 in the insulation sheath 50c The stepped portion 321 prevents the end of the insulation coating 50c from being inserted into the main body 30, and the insulation coating 50c is prevented from being deformed due to the deformation of the main body 30. connection is secured. Further, the tip 51ca of the conducting wire 51c is located at the open end 301d on one side of the main body 20 due to the elongation of the main body 30.

Note that the present invention is not limited to the embodiments described above, and can be modified in various ways. For example, in the first embodiment, annular measurement marks 131, 133 are formed on the outer circumferential surface 10c of the cylindrical main body 10 to indicate the measurement positions of the plurality of compressed regions P and the length L01 of the insulation coating 50 of the electric wire 5. However, the compression mark 102 may be displayed along the circumferential direction on one half circumferential surface of the outer circumferential surface 10c, and the measurement marks 131, 133 may be displayed along the circumferential direction on the other half circumferential surface.

In the first embodiment, the scale 13 displays the measurement marks 130 and 131 only on the main body 10, but the measurement marks are displayed on the opening end 11a of the protrusion 11 on one side and the opening end 12a of the protrusion 12 on the other side. Alternatively, a range from the measurement marks 130, 131 on the main body 10 to the open end 11a of the one side protrusion 11 and the open end 12a of the other side protrusion 12 may be marked. In short, the lengths L01 and L02 of the insulation coating 50 of the electric wire 5 are set between the measurement marks 130 and 131 on the main body 10 and the open end 11a of the protrusion 11 on one side and the open end 12a of the protrusion 12 on the other side. As long as it can be measured.

In the first embodiment, the protrusions 11 and 12 are provided on both sides of the main body 10, but the protrusions 11 and 12 may be provided on only one of them. In this case, the reference position for insertion of the conducting wire on the side without the protrusion is the center of the main body. Further, in the first embodiment, the length of the protrusions 11 and 12 is made equal to the length of the main body 10 extending in the axial direction depending on the number of compressions, but it may be made longer than this length. In this case, a measurement mark can be displayed on the protrusion.

In the first embodiment, the main body 10 connects the electric wires 5, 5 of the same diameter, but may connect electric wires of different diameters.

In the first embodiment, the measurement marks 130 and 131 are displayed on the main body 10 as the scale 13, but in the case of a main body covered with an insulating coating, the measurement marks 130 and 131 of the scale 13 may be displayed on the insulating coating. Conceivable.

In the first embodiment, the one side protrusion 11 and the other side protrusion 12 are made of the same material as the main body 10 (made of aluminum), but if the main body 10 is covered with a stretchable insulating coating, the one side protrusion The portion 11 and the other side protrusion 12 may be made of the same material as the insulating coating of the main body 10 and may be formed continuously to the insulating coating. In this case, the insulation coatings of the one side protrusion 11 and the other side protrusion 12 are made transparent so that the positional relationship between the one side protrusion 11 and the other side protrusion 12 and the insulation coating 50 of the electric wire 5 can be visually observed. Good too. In short, it is sufficient that the one side protrusion 11 and the other side protrusion 12 have insertion passages 110, 120 having approximately the same diameter as the outer diameter of the electric wire 5, and extend together with the main body 10 when compressed.

In the second and third embodiments, a case has been described in which the main body is provided with protrusions on both one side and the other side, but only one of the protrusions may be provided. In this case, the length between the outer edge of the protrusion and the outer edge of the main body corresponds to the peeling length.

In the second embodiment, the case where the protrusions are provided on the upper and lower sides has been described, but the case where only one of the protrusions is provided may be provided. Note that in the third embodiment as well, the protrusion can be provided only on either the upper or lower side.

In the first to third embodiments, a case has been described in which there is a plurality of parts into which the electric wire is inserted or passed through, but the present invention is not limited to this, and the case where there is one part into which only one electric wire is inserted may be provided. . In this case, other electric wires may be connected to the main body by other means.

1, 2, 3... Connection sleeve, 10, 20, 30... Main body, 10a... One side end of the main body, 10b... Other side end of the main body, 10c... Outer peripheral surface of the main body, 100... Insertion path of the main body, 200a , 200b, 300a, 300b...Insertion path of the main body, 101,201a, 201c, 301a, 301c...Open end (insertion opening) of the main body, 102,205a, 205b, 303...Compression mark, 11,21,33...One side Projection, 111, 121, 211, 221, 311, 321...Stepped portion, 12, 22, 34...Protrusion on the other side, 110, 120, 210, 220, 330, 340...Communication path of the projection, 13, 23, 24, 33, 34... Scale, 131... Measurement mark on one side of the scale, 133... Measurement mark on the other side of the scale, 5, 5b, 5c... Electric wire, 5a, 5ba, 5ca... Wire end, 50, 50b, 50c...Insulation coating, 51, 51b, 51c...Conducting wire, 52...Insulation coating stripping mark, L1 to L6...Length corresponding to the length that extends to one side in the axial direction when the main body 10, 20, 30 is compressed and deformed. Length of protrusion (extension), L01 to L04... Length of insulation coating, P... Compression area

Claims (4)

An insertion path made of a sleeve-shaped conductor into which the conductor region is inserted is connected to one side in the insertion direction through a partition wall provided in the center of the conductor region where the conductor wire is exposed by peeling off the insulation coating at the end of the wire. A connection sleeve comprising a main body on the other side, and connecting the electric wire inserted into the insertion path on one side and the electric wire inserted on the other side by compressing and deforming the main body in the radial direction,
having a protrusion protruding outward in the insertion direction at one end forming an insertion opening of the insertion path on at least one side;
The protruding portion is set to have a length corresponding to a length that extends outward in the insertion direction when the main body is compressed and deformed,
A connection sleeve characterized in that a length from the partition wall to an outer edge of the protrusion in the insertion direction corresponds to a length of the conductor region. A main body made of a sleeve-shaped conductor having at least one insertion passage through which the conductor region of the electric wire is exposed by stripping off the insulation coating of the electric wire,
A protrusion that protrudes outward in the insertion direction at least at one end in the insertion direction of the insertion passage of the main body, and has a length corresponding to the length that extends in the one side in the insertion direction when the main body is compressed and deformed. The protrusion has a protrusion set to a length such that the protrusion is provided at the other end in the insertion direction or the other end in the insertion direction of the main body from the outer edge of the protrusion in the insertion direction. A connecting sleeve, characterized in that the length to the outer edge in the direction corresponds to the length of the conductor region. The protrusion is provided at the other end of the main body in the insertion direction,
The connection sleeve according to claim 2, wherein the protrusion on the other side is set to have a length corresponding to a length that extends toward the other side in the insertion direction when the main body is compressed and deformed. The connection sleeve according to any one of claims 1 to 3, wherein a stepped portion is provided at a boundary between the main body and the protruding portion to prevent insertion of an end portion of the insulating coating.

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