JP6565659B2 - Compression sleeve for indirect hot wire construction - Google Patents

Description

  The present invention relates to a compression sleeve for indirect hot wire construction. Especially for indirect hot-wire construction where the insulation core for indirect hot-wire construction suitable for uninterruptible electrical work is used, and the core wire of the stripped sheath can be easily introduced into the compression sleeve. The present invention relates to the structure of a compression sleeve.

  For example, transformers and cutouts are installed on the utility poles. The transformer steps down the high voltage applied to the overhead distribution line to a low voltage used at home or office. The cut-out has a fuse inside and cuts off the electric circuit from the overhead distribution line to the transformer to prevent abnormal current from flowing through the transformer.

  FIG. 7 is a front view showing an example of a utility pole. Referring to FIG. 7, a transformer T is installed on the utility pole P. The utility pole P fixes the arm metal A in a horizontal state. A cutout C is provided on the arm metal A.

  Referring to FIG. 7, the underline We is pulled down from an aerial distribution line (not shown) installed on the top of the utility pole P. The underline We is connected to one electrode of the cut-out C through the insulator G supported by the arm A. Hereinafter, an electric wire extending from the insulator G to one electrode of the cutout C is referred to as a power supply side edge line W1.

  Referring to FIG. 7, the other electrode of the cutout C is connected to the input terminal of the transformer T by an electric wire. Hereinafter, the electric wire from the other electrode of the cutout C to the input terminal of the transformer T will be referred to as a load side edge line W2. When the fuse built in the cutout C is activated, the power supply side edge line W1 and the load side edge line W2 can be electrically cut off to protect the transformer T.

  Referring to FIG. 7, when exchanging cutout C, power supply side edge line W1 and load side edge line W2 are electrically connected by a conductive compression sleeve (not shown), and cutout C is replaced. May be configured to bypass the circuit.

  FIG. 8 is a front view showing a configuration example of the compression sleeve. When the power supply side edge line W1 and the load side edge line W2 are connected by a compression sleeve by the indirect hot wire method, the compression sleeve is compressed by the following operation procedure.

  Referring to FIG. 7 or FIG. 8, first, since load side edge line W2 is in a power failure state, the terminal of load side edge line W2 is gripped by hand, and core wire Wc of load side edge line W2 is compressed into a compression sleeve. Insert from one end side of Sv. Next, the compression pliers are directly held by hand, and the predetermined two places on one end side of the compression sleeve Sv are compressed with the compression pliers. As described above, the temporary connection work between the load side edge line W2 and the compression sleeve Sv can be performed by a so-called direct hot wire work in which an insulating glove is worn.

  Next, referring to FIG. 7 or FIG. 8, the power supply side edge line W1 and the compression sleeve Sv are connected. In this case, since the power supply side edge line W1 is energized, first, using a peeling tool (not shown) for indirect hot wire installation attached to the tip of the insulating operation rod, The terminal coating is peeled off and the core wire Wc is exposed.

  Next, referring to FIG. 8, the load side edge line W2 and the power source side edge line W1 are respectively gripped by using an insulating operation rod having a pair of opening and closing arms at the tip end (so-called insulating YATCO), and the load side The core wire Wc of the power supply side edge line W1 is inserted into the compression sleeve Sv to which the edge line W2 is connected.

  Next, using one set of insulating yarns, one operator holds the load side edge line W2 and the power source side edge line W1, while the other operator uses manual compression pliers ( (Not shown) was used to compress the compression sleeve Sv, and the load side edge line W2 and the power source side edge line W1 were permanently connected to the compression sleeve Sv.

  However, referring to FIG. 8, the load-side edge line W2 and the power-side edge line W1 are each gripped by an insulating jacket, and the core Wc of the power-side edge line W1 is inserted into the compression sleeve Sv connected to the load-side edge line W2. There was a problem that it was not easy to do. In particular, in a situation where the wind is blowing strongly, there is a problem that it is not easy to insert the core wire Wc of the power supply side edge line W1 into the compression sleeve Sv.

  In order to eliminate the above-described problems, an electric wire insertion aid that can easily introduce the core wire of the electric wire into the compression sleeve and can efficiently compress the compression sleeve is disclosed (for example, see Patent Document 1).

JP 2014-207815 A

  FIG. 9 is a perspective view showing a configuration of a conventional wire insertion aid. FIG. 10 is an enlarged vertical cross-sectional view of a main part of a conventional wire insertion aid. FIG. 11: is process drawing which shows the process of compressing the core wire of the terminal of an electric wire to a compression sleeve using the electric wire insertion auxiliary tool by a prior art. 9 to 11 of the present application correspond to FIGS. 1 to 3 of Patent Document 1.

  Referring to FIGS. 9 to 11, a conventional wire insertion assisting tool (hereinafter abbreviated as an assisting tool) 9 includes a cylindrical portion 91 and a conical portion 92. The cylindrical portion 91 can introduce the compression sleeve 8 from one end side thereof. The cylindrical portion 91 displays a plurality of ring-shaped indexes 9m on the outer periphery at equal intervals.

  Referring to FIG. 9 or FIG. 10, the conical portion 92 is expanded in diameter from the other end portion of the cylindrical portion 91. A power supply side edge line W <b> 1 can be introduced into the conical portion 92. A step 91 d smaller than the inner diameter of the cylindrical portion 91 is formed at the boundary between the cylindrical portion 91 and the conical portion 92. When the edge of the compression sleeve 8 abuts on the step 91d, the amount of the compression sleeve 8 pushed into the auxiliary tool 9 can be defined.

  Referring to FIG. 9 or FIG. 11, the compression sleeve 8 displays a plurality of ring-shaped indexes 8m on the outer periphery at equal intervals. These indices 8m indicate the compression location of the compression sleeve 8. 11 (B) to 11 (E), in a state where the compression sleeve 8 is inserted from one end side of the cylindrical portion 91, the index 9m of the cylindrical portion 91 and the index 8m of the compression sleeve 8 are overlapped. Can do.

  Next, a process of connecting the power supply side edge line W1 and the load side edge line W2 to the compression sleeve 8 using the auxiliary tool 9 will be described. With reference to FIG. 9, the coating Wi of the terminal of the load side edge line W2 is peeled in advance, and the core wire Wc is exposed with a predetermined length.

  First, referring to FIG. 11A, the core wire Wc of the load side edge line W <b> 2 is inserted into the opening k <b> 2 at the other end of the compression sleeve 8. Next, referring to FIG. 11A, the other end portion side of the compression sleeve 8 is compressed, and the core wire Wc of the load side edge line W <b> 2 is temporarily connected to the compression sleeve 8.

  Next, referring to FIG. 11 (B), the auxiliary tool 9 is attached to the compression sleeve 8 from the one opening k1 side of the compression sleeve 8. Next, referring to FIG. 11C, the core wire Wc of the terminal of the power supply side edge line W1 from which the covering Wi has been peeled is inserted into the conical portion 92. In this step, the core wire Wc of the power supply side edge line W1 is guided to the inner wall of the conical portion 92 and is introduced to one end portion side of the compression sleeve 8 through the opening k1 at one end portion of the compression sleeve 8 (FIG. 11 (D)).

  Next, referring to FIG. 11 (E), an index 9m of the cylindrical portion 91 and an index on the other end side of the compression sleeve 8 are used by using a manual compression pliers (not shown) for indirect hot wire construction. Compress 8m. Thereby, the load side edge line W2 and the power source side edge line W1 can be permanently connected to the compression sleeve 8. And a series of connection work is complete | finished.

  The electric wire insertion aid according to Patent Document 1 is capable of efficiently inserting an electric wire into a compression sleeve and efficiently compressing the compression sleeve.

  However, referring to FIG. 11D, in a state in which the core wire Wc of the power supply side edge line W1 is inserted into the conical portion 92, one worker uses a set of insulating jackets to connect the load side edge line W2 and the power supply. The side edge line W1 is held. For this reason, there is a problem that it is difficult to prevent the core wire Wc of the power supply side edge line W1 from coming out of the compression sleeve 8 in a situation where the wind is blowing strongly.

  Indirect hot wire that can easily hold the core of the electric wire from which the coating has been peeled into the inside of the compression sleeve and can hold the end of the electric wire to the compression sleeve while the core of the end of the electric wire is inserted into one end of the compression sleeve There was a need for a compression sleeve for construction. The above can be said to be the subject of the present invention.

  The present invention has been made in view of such a problem, and it is easy to introduce the core wire of the electric wire from which the coating has been peeled into the compression sleeve, and the core wire of the end of the electric wire is attached to one end portion of the compression sleeve. It aims at providing the compression sleeve for indirect hot wire construction which can hold | maintain the terminal of an electric wire in a compression sleeve in the inserted state.

  The inventor arranges a plurality of C-shaped ring-shaped members whose diameters are expanded toward the outside so that the ends of the electric wires can be introduced to the outside, and these ring-shaped members are expanded by themselves. The ring-shaped member having the smallest inner diameter when the outer periphery of the ring-shaped member is coupled to each other by a plurality of connecting rods and the pair of gripping portions disposed at the end portions of the ring-shaped member is gripped by the pair of gripping arms. The end of the electric wire can be introduced into the inside, and in a state where the pair of gripping portions are released, the end of the electric wire is tightened from above the covering to find that the end of the electric wire can be held in the compression sleeve body, based on this, The inventors have invented the following new compression sleeve for indirect hot-wire work.

  (1) The compression sleeve for indirect hot wire construction according to the present invention is a cylindrical compression sleeve body in which the core wire of the end of the electric wire with the coating peeled off is used with an insulating operation rod having a pair of openable and closable gripping arms at the tip. A compression sleeve for indirect hot-wire work that can be inserted into the inside from one end of the wire, and is coaxially arranged from one end of the compression sleeve body toward the outside, and the terminal of the electric wire is connected from the core wire side. A plurality of C-shaped ring-shaped members that are expanded toward the outside so as to be freely introduced and that are partially cut off in the circumferential direction, and extend outward from one end of the compression sleeve body, A plurality of connecting rods that connect the outer peripheries of the ring-shaped members to each other so that the diameter of the ring-shaped members can be increased, and the ring-shaped members intersect from the end portions of the ring-shaped members A pair of extensions extending in the state And a pair of gripping portions that are disposed at the end portions of these extending portions and are opposed to each other by a pair of gripping arms, and in a state where the pair of gripping portions are close to each other, In the state where the inner diameter of the ring-shaped member is expanded so as to be freely introduced into the ring-shaped member having the smallest inner diameter located on one end side, and the pair of gripping portions are released, the wire The inner diameter of the ring-shaped member having the smallest inner diameter located on one end side of the end of the ring is reduced from the top of the covering.

  (2) The pair of extending portions and the pair of gripping portions are preferably arranged on a ring-shaped member having a minimum inner diameter located on one end side.

  (3) It is preferable that the plurality of connecting rods have a step at a base end portion with which the end face of the covering can freely come into contact.

  (4) It is preferable that the plurality of the connecting rods are arranged such that the plurality of ring-shaped members can be interlocked so that the diameter can be increased or decreased.

  (5) The ring-shaped member may be configured by a linear body having a substantially circular cross section.

  The compression sleeve for indirect hot wire construction according to the present invention has a terminal of an electric wire inside a ring-shaped member having a minimum inner diameter in a state where a pair of gripping portions arranged at the end portions of the ring-shaped member is gripped by a pair of gripping arms. In a state in which the pair of gripping portions are released, the end of the electric wire can be tightened from above the covering to hold the end of the electric wire on the compression sleeve body.

FIG. 3 is a perspective view showing a configuration of a compression sleeve for indirect hot-line work according to an embodiment of the present invention, and is a state diagram before a pair of gripping portions are gripped by a pair of gripping arms arranged at the distal end portion of an insulating operation rod. . It is a perspective view which shows the structure of the compression sleeve for indirect hot wire construction by the said embodiment, and is a state figure which hold | gripped a pair of holding part with a pair of holding arm arrange | positioned at the front-end | tip part of an insulation operating rod. It is a perspective view which shows the structure of the compression sleeve for indirect hot wire construction by the said embodiment, and is the state figure which supported the terminal of the electric wire. It is a figure which shows the structure of the compression sleeve for indirect hot wire construction by the said embodiment, FIG. 4 (A) is a front view of the compression sleeve for indirect hot wire construction, FIG.4 (B) is compression for indirect hot wire construction. It is a right view of a sleeve. It is a front view of the insulation operation rod for operating the compression sleeve for indirect hot wire construction by the said embodiment. It is the front view which expanded the front-end | tip part of the insulation operating rod shown in FIG. It is a front view which shows the example of a mounting pole of an electric pole. It is a front view which shows one structural example of a compression sleeve. It is a perspective view which shows the structure of the electric wire insertion auxiliary tool by a prior art. It is the longitudinal cross-sectional view which expanded the principal part of the electric wire insertion auxiliary tool by a prior art. It is process drawing which shows the process of compressing the core wire of the terminal of an electric wire to a compression sleeve using the electric wire insertion auxiliary tool by a prior art.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[Configuration of compression sleeve for indirect hot-wire construction]
Initially, the structure of the compression sleeve for indirect hot wire construction by one Embodiment of this invention is demonstrated.

  FIG. 1 is a perspective view showing a configuration of a compression sleeve for indirect hot-wire work according to an embodiment of the present invention, before gripping a pair of gripping portions with a pair of gripping arms arranged at the distal end portion of an insulating operation rod. It is a state diagram.

  FIG. 2 is a perspective view showing the configuration of the compression sleeve for indirect hot-wire work according to the embodiment, and is a state diagram in which a pair of gripping portions are gripped by a pair of gripping arms arranged at the distal end portion of the insulating operation rod.

  FIG. 3 is a perspective view showing a configuration of the compression sleeve for indirect hot wire construction according to the embodiment, and is a state diagram in which the end of the electric wire is supported.

  FIG. 4 is a view showing a configuration of a compression sleeve for indirect hot-line work according to the embodiment, FIG. 4 (A) is a front view of the compression sleeve for indirect hot-wire work, and FIG. 4 (B) is an indirect live work. It is a right view of the compression sleeve for wire construction.

  In addition, since the effect | action of the component which has the code | symbol same as the code | symbol used by the prior art is made the same, description may be abbreviate | omitted below.

(overall structure)
Next, the whole structure of the compression sleeve for indirect hot wire construction according to one embodiment of the present invention will be described. Referring to FIGS. 1 to 4, a compression sleeve for indirect hot-wire work (hereinafter abbreviated as a sleeve) 10 according to an embodiment of the present invention has a cylindrical core wire Wc of a wire W from which a covering Wi is peeled. The compression sleeve body 1 can be inserted into the inside from one end.

  1 to 4, the sleeve 10 includes a plurality of C-shaped ring-shaped members 11, 12, and 13 and a plurality of connecting rods 21, 22, and 23 that are partially cut off in the circumferential direction. The ring-shaped member 11 includes a pair of extending portions 11a and 11b and a pair of gripping portions 11c and 11d.

  Referring to FIGS. 1 to 4, the plurality of ring-shaped members 11, 12, and 13 are arranged coaxially from one end of the compression sleeve body 1 toward the outside. The plurality of ring-shaped members 11, 12, and 13 are increased in diameter toward the outside. And the terminal of the electric wire W can be introduce | transduced into the some ring-shaped member 11,12,13 from the core wire Wc side.

  Referring to FIGS. 1 to 4, the plurality of connecting rods 21, 22, and 23 extend outward from one end of the compression sleeve body 1. The plurality of connecting rods 21, 22, and 23 couple the outer peripheries of the ring-shaped members 11, 12, and 13 so that the diameter of the ring-shaped members 11, 12, and 13 can be increased.

  1 to 4, the ring-shaped member 11 is located on one end side. The ring-shaped member 11 has the smallest inner diameter among the ring-shaped members 11, 12, and 13.

  With reference to FIGS. 1 to 4, the pair of extending portions 11 a and 11 b extend from the end portion of the ring-shaped member 11 so as to intersect with each other. The pair of gripping portions 11c and 11d are disposed at the end portions of the pair of extending portions 11a and 11b. Further, the pair of gripping portions 11c and 11d are disposed to face each other. The pair of gripping portions 11c and 11d can be gripped by a pair of gripping arms 6a and 6b described later.

  With reference to FIG. 2, the inner diameter of the ring-shaped member 11 can be increased in a state where the pair of gripping portions 11 c and 11 d are brought close to each other. Then, the end of the electric wire W can be introduced into the ring-shaped member 11. On the other hand, referring to FIG. 3, the inner diameter of the ring-shaped member 11 can be reduced in a state where the pair of gripping portions 11 c and 11 d are released. And the terminal of the electric wire W can be fastened from the top of the covering Wi.

  1 to 4, the sleeve 10 according to the embodiment has a minimum inner diameter in a state where a pair of gripping portions 11 c and 11 d disposed at the end portions of the ring-shaped member 11 are gripped by a pair of gripping arms 6 a and 6 b. The terminal of the electric wire W can be introduced into the inside of the ring-shaped member 11 having. On the other hand, in a state where the pair of gripping portions 11c and 11d are released, the end of the electric wire W can be fastened from above the covering Wi and the end of the electric wire W can be held on the compression sleeve main body 1.

(Structure of ring-shaped member)
Next, the structure of the ring-shaped members 11, 12, and 13 according to the embodiment will be described. 1 to 4, the pair of extending portions 11a and 11b and the pair of gripping portions 11c and 11d are arranged on a ring-shaped member 11 having a minimum inner diameter located on one end side.

  1 to 4, the pair of extending portions 11a and 11b and the pair of gripping portions 11c and 11d may be disposed on the ring-shaped member 13 having the maximum inner diameter located on the other end side. it can. Further, the pair of extending portions 11a and 11b and the pair of gripping portions 11c and 11d can be arranged on a ring-shaped member 12 having a predetermined inner diameter located in the middle.

  With reference to FIGS. 1 to 4, the ring-shaped members 11, 12, and 13 according to the embodiment are configured by linear bodies having a substantially circular cross section. The ring-shaped members 11, 12, and 13 can also be configured by a linear body having a rectangular cross section.

(Composition of connecting rod)
Next, the configuration of the connecting rods 21, 22, and 23 according to the embodiment will be described. Referring to FIGS. 1 to 4, the plurality of connecting rods 21, 22, and 23 have a step 2 d at the base end portion with which the end face of the covering Wi can freely come into contact. The insertion depth of the core wire Wc into the compression sleeve main body 1 can be defined by the end surface of the covering Wi coming into contact with the step 2d.

  1 to 4, the plurality of connecting rods 21, 22, and 23 are arranged such that a plurality of ring-shaped members 11, 12, and 13 can be interlocked so that the diameter can be increased or decreased. The pair of connecting rods 22 and 23 are preferably arranged so as to connect the end portions of the plurality of ring-shaped members 11, 12 and 13. The plurality of connecting rods 21, 22, and 23 are preferably coupled to the plurality of ring-shaped members 11, 12, and 13 by joining means such as welding.

(Configuration of insulation operation rod)
Next, the configuration of the insulating operation rod 6 for operating the sleeve 10 will be described.

  FIG. 5 is a front view of an insulating operation rod for operating the compression sleeve for indirect hot wire construction according to the embodiment. 6 is an enlarged front view of the distal end portion of the insulating operation rod shown in FIG.

  Referring to FIG. 5 or FIG. 6, the insulating operation rod 6 is composed of a long operation rod 61 and a gripping tool 62. Further, the insulating operation rod 6 includes an operation rod 63. The gripping tool 62 is attached to the distal end portion of the operation rod 61.

  Referring to FIG. 5 or FIG. 6, the gripping tool 62 is composed of a pair of curved gripping arms 6a and 6b that open and close. One gripping arm 6a is a fixed arm with a base end fixed, and the other gripping arm 6b rotates around a rotation shaft 6c provided at the base end of one gripping arm 6a. It is a movable arm.

  Referring to FIG. 5, the operation bar 63 is held along the operation bar 61. The distal end portion of the operating rod 63 is rotatably connected to the other gripping arm 6b. And if the operation lever 64 provided in the base end part of the action | operation stick | rod 63 is operated, the other holding arm 6b can be opened and closed with respect to one holding arm 6a. The insulating operation rod 6 is formed of an insulating plastic pipe or the like at the intermediate portion between the operation rod 61 and the operation rod 63, and ensures insulation so as to be suitable for the indirect hot wire method.

  Referring to FIG. 5, when the operation lever 64 is grasped and the operation lever 64 is brought close to the operation rod 61, the other gripping arm 6b can be closed with respect to the one gripping arm 6a. When the operation lever 64 is released, the other gripping arm 6b can be opened with respect to one gripping arm 6a by the force of a spring (not shown) connected to the control lever 64. FIG. 5 or FIG. 6 shows a state in which the other gripping arm 6b is opened to the maximum with respect to one gripping arm 6a.

  Referring to FIG. 5 or FIG. 6, one gripping arm 6a projects a tapered gripping claw 61a. The gripping claw 61a forms a gripping surface 60a. The gripping surface 60a is formed substantially in parallel along the centrifugal direction from the rotation center of the rotation shaft 6c. Similarly, the other gripping arm 6b projects a tapered gripping claw 61b. The gripping claw 61b forms a gripping surface 60b. The gripping surface 60b is arranged with a predetermined opening angle with the gripping surface 60a.

  With reference to FIG. 5 or FIG. 6, when the operation lever 64 is gripped, the gripping surface 60b can be brought close to the gripping surface 60a. The insulation operation rod 6 shown in FIG. 6 or 7 can grip a high-voltage distribution line or the like placed at a high place with a pair of gripping claws 61a and 61b.

[Operation of compression sleeve for indirect hot-wire construction]
Next, the operation and effect of the sleeve 10 will be described while explaining the operation method of the sleeve 10 according to the embodiment.

  With reference to FIG. 1, the coating Wi of the terminal of the electric wire W is peeled in advance to expose the core wire Wc. First, with reference to FIG. 2, a pair of holding | gripping part 11c * 11d arrange | positioned at the terminal part of the ring-shaped member 11 is hold | gripped with a pair of holding arms 6a * 6b. Thereby, the internal diameter of the ring-shaped member 11 can be expanded and the terminal of the electric wire W can be introduced. In other words, the inner diameter of the ring-shaped member 11 is set slightly larger than the outer diameter of the end of the electric wire W. By gripping the pair of gripping portions 11c and 11d with the pair of gripping arms 6a and 6b, the inner diameter of the ring-shaped member 11 can be increased and the terminal of the electric wire W can be easily introduced.

  Next, referring to FIG. 2, the electric wire W enters from one end of the electric wire W toward the one opening of the compression sleeve body 1 from the core wire Wc side. In this case, since the plurality of ring-shaped members 11, 12, 13 are expanded in diameter toward the outside, the end of the electric wire W can be easily introduced into the plurality of ring-shaped members 11, 12, 13.

  Next, referring to FIG. 3, the core wire Wc is inserted into one end portion of the compression sleeve main body 1 in a state where the coating Wi of the end of the electric wire W is in contact with the step 2 d. When the pair of gripping portions 11c and 11d are released from the pair of gripping arms 6a and 6b with the covering Wi of the terminal of the electric wire W in contact with the step 2d, the ring-shaped member 11 is elastically restored, and the ring shape By reducing the inner diameter of the member 11, the end of the electric wire W can be tightened from the top of the covering Wi. Thereby, the terminal of the electric wire W can be hold | maintained at the compression sleeve main body 1. FIG.

  Thus, in the sleeve 10 according to the embodiment, the core wire Wc of the electric wire W from which the coating Wi has been peeled can be easily introduced into the compression sleeve main body 1, and the core wire Wc of the end of the electric wire W is connected to one side of the compression sleeve main body 1. The terminal of the electric wire W can be held in the compression sleeve main body 1 in a state of being inserted into the end portion.

The following effects can be expected from the compression sleeve for indirect hot wire construction according to the present invention.
(1) Since the conical insertion guide framed by a plurality of ring-shaped members and a plurality of connecting rods is provided at the end of the compression sleeve body, the electric wire can be easily introduced.
(2) The end of the electric wire can be easily held using the insulating operation rod.
(3) It is possible to prevent the core wire of the electric wire from coming out of the compression sleeve even under a strong wind.
(4) The electric wire can be held until the compression sleeve is fully compressed.

  Although the present invention has disclosed a compression sleeve for indirect hot-wire work in which the core of the electric wire with the coating peeled can be easily introduced into the inside of the compression sleeve, the compression sleeve for indirect hot-wire work of the present invention is a general compression sleeve. It is expected to be applied as

DESCRIPTION OF SYMBOLS 1 Compression sleeve body 6 Insulation operation rod 6a, 6b A pair of gripping arms 10 Sleeve (compression sleeve for indirect hot wire construction)
11, 12, 13 Plural ring-shaped members 11a, 11b A pair of extending portions 11c, 11d A pair of gripping portions 21, 22, 23 A plurality of connecting rods W Electric wire Wc Core wire Wi Coating

Claims (5)

An indirect hot-wire construction in which the core wire of the end of the peeled wire can be inserted into the inside of one end of the cylindrical compression sleeve body using an insulating operation rod having a pair of openable and closable gripping arms at the tip. Compression sleeve for
It is coaxially arranged from one end of the compression sleeve body to the outside, expands the diameter of the end of the electric wire toward the outside so that it can be introduced from the core wire side, and part of the circumferential direction is cut off. A plurality of C-shaped ring-shaped members;
A plurality of connecting rods extending outward from one end of the compression sleeve main body and allowing the plurality of ring-shaped members to be enlarged in diameter, and connecting the outer circumferences of the ring-shaped members to each other; ,
The ring-shaped member is
A pair of extending portions extending in a state of intersecting from the end portion of the ring-shaped member;
A pair of gripping portions arranged at the end portions of these extending portions and arranged to be gripped by a pair of gripping arms,
In a state where the pair of gripping parts are brought close to each other, the inner diameter of the ring-shaped member is expanded so that the terminal of the electric wire can be introduced into the ring-shaped member having the smallest inner diameter located on one end side. ,
In a state where the pair of gripping portions are released, the inner diameter of the ring-shaped member having the smallest inner diameter located on one end side so as to be tightly tightenable from the top of the covering is reduced. Compression sleeve for indirect hot wire construction.   The compression sleeve for indirect hot-wire work according to claim 1, wherein the pair of extending portions and the pair of gripping portions are arranged on a ring-shaped member having a minimum inner diameter located on one end side.   3. The compression sleeve for indirect hot-wire work according to claim 1, wherein the plurality of connecting rods have a step at a base end portion with which an end face of the covering can freely contact.   The compression sleeve for indirect hot-wire construction according to any one of claims 1 to 3, wherein a plurality of the connecting rods are arranged such that the plurality of ring-shaped members can be interlocked so that the diameter can be increased or decreased.   The said ring-shaped member is a compression sleeve for indirect hot wire construction according to any one of claims 1 to 4, wherein the cross-section is formed of a wire body having a substantially circular cross section.

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