JP2010198968A - Electric wire connecting tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric wire connecting tool in which an electric wire can be connected easily and which is superior in a workability. <P>SOLUTION: This electric wire connecting tool 10 equipped with a cylindrical conductive sleeve 12 having at least two bolt holes 20 at the peripheral wall part, a first cylindrical insulating cover 24 which has a through-hole 26 communicated with respective bolt holes of a sleeve at the peripheral wall part and in which the outer peripheral face of the sleeve is covered, conductive bolts 22 screwed with respective bolt holes of the sleeve, and a second insulating cover 30 attached to the first insulating cover in a state to cover respective through-holes of the first insulating cover. Then, conductors 32, 34 of the electric wire are inserted from both end opening parts of the sleeve into the sleeve, and after the conductors are fixed between the peripheral wall of the sleeve and the tip parts of the bolts by rotating the bolts, the second insulating cover is attached to the first insulating cover in a state to cover the respective through-holes of the first insulating cover. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electric wire connecting tool for connecting electric wires.

  Conventionally, a substantially cylindrical metal crimping sleeve has been used as an electric wire connecting tool for connecting electric wires (see, for example, Non-Patent Document 1). When connecting wires using this crimping sleeve, insert the conductor of the wire into the sleeve, and then deform the sleeve using a dedicated crimping tool to crimp the conductor and sleeve, and then insulate the sleeve The sleeve is insulated by winding a tape or the like.

http://www.asahi-net.or.jp/~yl1h-nkmr/parts/atyaku.html

  However, the above-described crimping sleeve is to insulate the sleeve by deforming the sleeve with a crimping tool and fixing the conductor to the sleeve and then winding the insulating tape around the sleeve. The workability was poor.

  This invention is made | formed in view of the situation mentioned above, It aims at providing the electric wire connection tool which can connect an electric wire easily and was excellent in workability | operativity.

  In order to achieve the above object, the present invention provides a wire connecting tool according to the following first and second inventions.

(First invention)
A cylindrical conductive sleeve having at least two bolt holes in the peripheral wall portion;
A cylindrical first insulating cover having a through hole communicating with each bolt hole of the sleeve in the peripheral wall portion and covering the outer peripheral surface of the sleeve;
A conductive bolt screwed into each bolt hole of the sleeve;
A second insulating cover attached to the first insulating cover in a state of covering each through hole of the first insulating cover;
After inserting a conductor of an electric wire into the sleeve from both ends of the sleeve and rotating the bolt to fix the conductor between the peripheral wall portion of the sleeve and the tip of the bolt, each of the first insulating covers An electric wire connecting tool, wherein the second insulating cover is attached to a first insulating car in a state where the through hole is covered.

(Second invention)
A cylindrical conductive sleeve having at least two bolt holes in the peripheral wall portion;
Two first insulating covers that are watertightly attached to the tip of the insulator of the electric wire with the conductor protruding from the tip;
A conductive bolt screwed into each bolt hole of the sleeve;
When the first insulating cover is attached to the tip of the insulator of the electric wire with the conductor protruding from the tip, and the conductor of the electric wire is inserted into the sleeve from both ends of the sleeve, the sleeve and both first insulation A second insulating cover that is watertightly attached to both first insulating covers in a state of covering the cover
Attach the first insulating cover to the tip of the insulator of the electric wire with the conductor protruding from the tip, insert the conductor of the electric wire into the sleeve from both ends of the sleeve, and then rotate the bolt to rotate the sleeve. After the conductor is fixed between the peripheral wall portion and the tip end portion of the bolt, the second insulating cover is attached to both the first insulating covers in a state where the sleeve and both the first insulating covers are covered. Wire connection tool.

  Since the wire connecting tool of the first invention is configured as described above, the conductors of both wires to be connected are inserted into the sleeve, the bolt is rotated to fix the conductor to the sleeve, and then the second insulating cover is attached to the first insulating cover. An electric wire can be connected by attaching an insulating cover. Therefore, the wire connecting tool according to the first aspect of the present invention can be obtained by fixing the conductor to the sleeve without deforming the sleeve using a general bolt turning tool, and then attaching the second insulating cover to the first insulating cover. Since it can be connected easily, it is excellent in workability.

  Since the wire connecting tool of the second invention is configured as described above, the first insulating cover is attached to the tip of the insulator of both wires to be connected, the conductor is then inserted into the sleeve, and the bolt is rotated. After fixing the conductor to the sleeve, the electric wire can be connected by attaching the second insulating cover to the first insulating cover. Therefore, the wire connecting tool according to the second invention is provided with the first insulating cover on the insulator of the wire, and then fixing the conductor to the sleeve without deforming the sleeve using a general bolt turning tool. Since the electric wire can be easily connected only by attaching the insulating cover to the first insulating cover, the workability is excellent.

  The electric wire connecting tool of the present invention can easily connect electric wires and is excellent in workability.

It is a top view which shows 1st Embodiment of the wire connection tool which concerns on this invention. It is sectional drawing in alignment with FIG. 1A-A of the wire connection tool of FIG. It is sectional drawing which shows the state which connected the electric wire with the electric wire connection tool of FIG. It is sectional drawing which shows 2nd Embodiment of the wire connection tool which concerns on this invention. It is sectional drawing which shows the state which connected the electric wire with the electric wire connection tool of FIG. It is sectional drawing which shows 3rd Embodiment of the wire connection tool which concerns on this invention. It is a side view which shows the electric wire connection tool of FIG. It is a general view which shows 4th Embodiment of the wire connection tool which concerns on this invention. It is sectional drawing which shows the state which connected the electric wire with the electric wire connection tool of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following examples.

(First embodiment)
FIG. 1 is a plan view showing a first embodiment of a wire connecting tool according to the present invention, FIG. 2 is a sectional view of the wire connecting tool along FIG. 1A-A, and FIG. 3 is an electric wire connected by the wire connecting tool. It is sectional drawing which shows a state. The first embodiment is an embodiment of the first invention.

  In the wire connecting tool 10 of this example, 12 is a conductive sleeve. The sleeve 12 is formed of a metal such as aluminum, aluminum alloy, copper, copper alloy, iron, iron alloy, and stainless steel, or a conductive material such as a conductive resin (specifically, in this example, brass is used). A partition 18 that partitions the inside of the sleeve 12 into two chambers 14 and 16 is provided at the central portion in the axial direction. Four bolt holes 20 are formed in the peripheral wall portion of the sleeve 12 so as to be spaced apart from each other by a predetermined distance along the axial direction. The two bolt holes 20 communicate with one chamber 14 and the two bolt holes 20 are the other. The room 16 is in communication. Cap bolts 22 that are tightened with hexagonal wrench as conductive bolts are screwed into the four bolt holes 20. The cap bolt 22 is formed of a metal such as aluminum, aluminum alloy, copper, copper alloy, iron, iron alloy, stainless steel, or a conductive material such as a conductive resin. However, the type of conductive bolt is not limited, and a bolt other than the cap bolt may be used.

  In the electric wire connecting tool 10 of this example, 24 is a first insulating cover. The first insulating cover 24 is substantially cylindrical and formed of an insulating material such as insulating plastic or insulating rubber (specifically, insulating rubber is used in this example). The first insulating cover 24 has four circular through holes 26 communicating with the respective bolt holes 20 of the sleeve 12 in the peripheral wall portion, and does not move in the axial direction and the circumferential direction while covering the outer peripheral surface of the sleeve 12. As shown in FIG. Further, at both axial end portions not in contact with the sleeve 12 of the first insulating cover 24, small diameter portions 28 having an inner diameter and an outer diameter smaller than those in contact with the sleeve 12 of the first insulating cover 24 are provided. ing.

  In the wire connecting tool 10 of the present example, 30 is a second insulating cover (see FIG. 3). The second insulating cover 30 is a rectangular sheet formed of an insulating material such as insulating plastic or insulating rubber (specifically, insulating rubber is used in this example), and is flexible. The first insulating cover 24 is attached to the outer peripheral surface of the first insulating cover 24 so as not to move in the axial direction and the circumferential direction with an adhesive while covering the four through holes 26 of the first insulating cover 24.

The connection of the electric wire using the electric wire connecting tool 10 of this example is performed according to the following procedure (see FIG. 3). In addition, there is no limitation in particular in the kind of electric wire.
(1) The conductor 32 of one electric wire from which the coating has been removed is inserted into one chamber 14 of the sleeve 12, and the conductor 34 of the other electric wire from which the coating has been removed is inserted into the other chamber 16 of the sleeve 12.
(2) The bolt 22 is rotated and moved forward, and the conductors 32 and 34 are fixed between the peripheral wall portion of the sleeve 12 and the tip portion of the bolt 22. Thereby, the conductors 32 and 34 of an electric wire are electrically connected.
(3) The second insulating cover 30 is attached to the outer peripheral surface of the first insulating cover 24 with an adhesive while covering the four through holes 26 of the first insulating cover 24. Thereby, the sleeve 12, the bolt 22, and the conductors 32 and 34 are electrically insulated.

(Second Embodiment)
FIG. 4 is a cross-sectional view showing a second embodiment of the wire connecting tool according to the present invention, and FIG. 5 is a cross-sectional view showing a state where electric wires are connected by the wire connecting tool. The second embodiment is an embodiment of the first invention.

  In the electric wire connecting tool 40 of this example, 42 is a conductive sleeve. The sleeve 42 has a cylindrical shape made of a conductive material similar to that described in the first embodiment (specifically, aluminum is used in this example). Two bolt holes 44 are formed in the peripheral wall portion of the sleeve 42 at a predetermined interval along the axial direction. Further, the cap bolts 46 similar to those described in the first embodiment are screwed into the two bolt holes 44 as conductive bolts. However, the type of the conductive bolt is not limited, and other types than the cap bolt may be used.

  In the wire connecting tool 40 of the present example, 48 is a first insulating cover. The first insulating cover 48 has a cylindrical shape formed of an insulating material similar to that described in the first embodiment (specifically, polycarbonate is used in this example). The first insulating cover 48 has two circular through holes 50 communicating with the respective bolt holes 44 of the sleeve 42 in the peripheral wall portion, and does not move in the axial direction and the circumferential direction while covering the outer peripheral surface of the sleeve 42. As shown in FIG.

  In the electric wire connecting tool 40 of this example, 52 is a second insulating cover. The second insulating cover 52 is substantially cylindrical and formed of an insulating material similar to that described in the first embodiment (specifically, polycarbonate is used in this example). The inner diameter of the first insulating cover 48 is substantially equal to the outer diameter of the first insulating cover 48, and the other opening is provided with a flange 54 projecting inwardly. Therefore, when the first insulating cover 48 attached to the sleeve 42 is inserted into the second insulating cover 52 from one opening of the second insulating cover 52, the end portion of the first insulating cover 48 abuts against the flange portion 54 to be second. A first insulating cover 48 is accommodated in the insulating cover 52. Although not shown, the first insulating cover 48 and the second insulating cover 52 are provided with a mechanism that prevents the second insulating cover 52 from moving in the axial direction. As such a mechanism, for example, one or a plurality of concave portions is provided on one of the outer peripheral surface of the first insulating cover 48 and the inner peripheral surface of the second insulating cover 52, and one or a plurality of convex portions corresponding to the concave portions are provided on the other side. There is a mechanism for providing and fitting the convex portion to the concave portion, but it is not limited to this.

The connection of the electric wire using the electric wire connection tool 40 of this example is performed according to the following procedure (see FIG. 5).
(1) Insert the conductor 56 of one electric wire and the conductor 58 of the other electric wire from which the coating has been removed into the sleeve 42.
(2) The bolt 46 is rotated and moved forward, and the conductors 56 and 58 are fixed between the peripheral wall portion of the sleeve 42 and the tip end portion of the bolt 46. Thereby, the conductors 56 and 58 of an electric wire are electrically connected.
(3) The first insulating cover 48 is accommodated in the second insulating cover 52. Thereby, the sleeve 42, the bolt 46, and the conductors 56 and 58 are electrically insulated.

(Third embodiment)
FIG. 6 is a cross-sectional view showing a third embodiment of the wire connecting tool according to the present invention, and FIG. 7 is a side view showing the wire connecting tool. The third embodiment is an embodiment of the first invention.

  The wire connecting tool 70 of this example is the same as the wire connecting tool 40 of the second embodiment except that the second insulating cover is different, and therefore the same as FIGS. 4 and 5 in FIGS. 6 and 7. Constituent parts are denoted by the same reference numerals and description thereof is omitted.

  In the wire connecting tool 70 of this example, 72 is a second insulating cover. The second insulating cover 72 has an arc-shaped cross section formed of an insulating material similar to that described in the first embodiment (specifically, polycarbonate is used in this example), and has a cross-sectional arc length. Is formed slightly larger than the arc length of the semicircle. The second insulating cover 72 has flexibility, and when the first insulating cover 48 is pushed into the second insulating cover 72 from the opening 74 on the outer peripheral surface, the width of the opening 74 increases and the second insulating cover 72 is expanded. The first insulating cover 48 is accommodated in the second insulating cover 72 when the first insulating cover 48 is inserted therein and the width of the opening 74 is restored to the original state. Although not shown, the first insulating cover 48 and the second insulating cover 72 are provided with a mechanism for preventing the second insulating cover 72 from moving in the axial direction and the circumferential direction. As such a mechanism, for example, one or a plurality of concave portions is provided on one of the outer peripheral surface of the first insulating cover 48 and the inner peripheral surface of the second insulating cover 72, and one or a plurality of convex portions corresponding to the concave portions are provided on the other side. There is a mechanism for providing and fitting the convex portion to the concave portion, but it is not limited to this.

The connection of the electric wire using the electric wire connecting tool 70 of this example is performed in the following procedure (refer to FIG. 5 for (1) and (2), and FIG. 7 for (3)).
(1) Insert the conductor 56 of one electric wire and the conductor 58 of the other electric wire from which the coating has been removed into the sleeve 42.
(2) The bolt 46 is rotated and moved forward, and the conductors 56 and 58 are fixed between the peripheral wall portion of the sleeve 42 and the tip end portion of the bolt 46. Thereby, the conductors 56 and 58 of an electric wire are electrically connected.
(3) The first insulating cover 48 is accommodated in the second insulating cover 72. Thereby, the sleeve 42, the bolt 46, and the conductors 56 and 58 are electrically insulated.

  As described above, in the wire connecting tool according to the first to third embodiments, the conductor is inserted into the sleeve, the bolt is rotated to fix the conductor to the sleeve, and then the second insulating cover is attached to the first insulating cover. By doing so, the electric wires can be easily connected, so that workability is excellent.

(Fourth embodiment)
FIG. 8 is an overall view showing a fourth embodiment of an electric wire connecting tool according to the present invention, and FIG. 9 is a cross-sectional view showing a state where electric wires are connected by the electric wire connecting tool. The fourth embodiment is an embodiment of the second invention.

  In the wire connecting tool 80 of this example, 82 is a conductive sleeve. The sleeve 82 has a cylindrical shape made of a conductive material similar to that described in the first embodiment (specifically, brass is used in this example). Two bolt holes 84 are formed in the peripheral wall portion of the sleeve 82 at a predetermined interval along the axial direction. The cap bolt 86 similar to that described in the first embodiment is screwed into the two bolt holes 84 as conductive bolts. However, the type of conductive bolt is not limited, and a bolt other than the cap bolt may be used.

  In the wire connecting tool 80 of this example, 88 is a first insulating cover. The first insulating cover 88 is formed in a cylindrical shape made of an insulating material similar to that described in the first embodiment (specifically, in this example, insulating rubber having flame retardancy and waterproofness is used). belongs to. The first insulating cover 88 is attached to the tip end portion of the insulator 94 in a watertight manner by inserting the tip end portion of the insulator 94 of the electric wire 92 with the conductor 90 protruding from the tip end into the hollow portion. In addition, the first insulating cover may be a tape made of an insulating material wound around the tip of the electric wire insulator, and in this case, the tape may be adhered to the insulator with an adhesive. .

  In the wire connecting tool 80 of this example, 96 is a second insulating cover. The second insulating cover 96 has a rectangular shape formed of an insulating material similar to that described in the first embodiment (specifically, in this example, insulating rubber having flame retardancy and waterproofness is used). A sheet having flexibility. The second insulating cover 96 is watertight to the first insulating cover 88 by inserting the conductor 90 of the electric wire 92 into the sleeve 82 from both ends of the sleeve 82 and then winding the second insulating cover 96 around the first insulating cover 88 and the sleeve 82. It is to be attached to.

The connection of the electric wire using the electric wire connection tool 80 of this example is performed according to the following procedure (see FIG. 9).
(1) The first insulating cover 88 is attached to the distal end portion of the insulator 94 of both the electric wires 92 from which the coating has been removed.
(2) The conductors 90 of both electric wires 92 are inserted into the sleeve 82.
(3) The bolt 86 is rotated and moved forward to fix the conductor 90 between the peripheral wall portion of the sleeve 82 and the tip portion of the bolt 86. Thereby, the conductor 90 of both the electric wires 92 is electrically connected.
(4) The second insulating cover 96 is wound around and mounted on the sleeve 82 and the first insulating covers 88. In this case, the second insulating cover 96 may be adhered to the sleeve 82 and both first insulating covers 88 with an adhesive. Thereby, the sleeve 82, the bolt 86, and the conductor 90 are electrically insulated.

  As described above, in the wire connecting tool according to the fourth embodiment, the first insulating cover is attached to the tip of the wire insulator, the conductor is then inserted into the sleeve, and the bolt is rotated to fix the conductor to the sleeve. After that, by attaching the second insulating cover to the first insulating cover, the electric wires can be easily connected, so that the workability is excellent.

  The wire connecting tool of the present invention is not limited to the above embodiment, and the material, shape, structure, etc. of the conductive sleeve, the first insulating cover, the second insulating cover, and the conductive bolt should be set as appropriate. Is possible. In the above embodiment, the conductive bolt is screwed into the bolt hole of the conductive sleeve in advance, but the conductive bolt may not be screwed into the bolt hole of the conductive sleeve in advance.

DESCRIPTION OF SYMBOLS 10 Wire connection tool 12 Conductive sleeve 20 Bolt hole 22 Conductive bolt 24 1st insulating cover 26 Through hole 30 2nd insulating cover 32, 34 Conductor 40 Wire connection tool 42 Conductive sleeve 44 Bolt hole 46 Conductive bolt 48 1st Insulating cover 50 Through hole 52 Second insulating cover 56, 58 Conductor 70 Electric wire connecting tool 72 Second insulating cover 80 Electric wire connecting tool 82 Conductive sleeve 84 Bolt hole 86 Conductive bolt 88 First insulating cover 90 Conductor 92 Electric wire 94 Insulator 96 Second insulation cover

Claims (6)

A cylindrical conductive sleeve having at least two bolt holes in the peripheral wall portion;
A cylindrical first insulating cover having a through hole communicating with each bolt hole of the sleeve in the peripheral wall portion and covering the outer peripheral surface of the sleeve;
A conductive bolt screwed into each bolt hole of the sleeve;
A second insulating cover attached to the first insulating cover in a state of covering each through hole of the first insulating cover;
After inserting a conductor of an electric wire into the sleeve from both ends of the sleeve and rotating the bolt to fix the conductor between the peripheral wall portion of the sleeve and the tip of the bolt, each of the first insulating covers An electric wire connecting tool is provided, wherein the second insulating cover is attached to the first insulating cover in a state of covering the through hole.   The wire connecting tool according to claim 1, wherein the first insulating cover is attached to the sleeve so as not to move in an axial direction and a circumferential direction.   The second insulating cover has a sheet shape or a circular arc shape, and the first insulating cover and the second insulating cover are provided with a mechanism for preventing the second insulating cover from moving in the axial direction and the circumferential direction. The wire connecting tool according to claim 1, wherein the wire connecting tool is provided.   The second insulating cover has a cylindrical shape, and the first insulating cover and the second insulating cover are provided with a mechanism for preventing the second insulating cover from moving in the axial direction. Item 3. A wire connecting tool according to item 1 or 2. A cylindrical conductive sleeve having at least two bolt holes in the peripheral wall portion;
Two first insulating covers that are watertightly attached to the tip of the insulator of the electric wire with the conductor protruding from the tip;
A conductive bolt screwed into each bolt hole of the sleeve;
When the first insulating cover is attached to the tip of the insulator of the electric wire with the conductor protruding from the tip, and the conductor of the electric wire is inserted into the sleeve from both ends of the sleeve, the sleeve and both first insulations A second insulating cover that is watertightly attached to both first insulating covers in a state of covering the covers;
Attach the first insulating cover to the tip of the insulator of the electric wire with the conductor protruding from the tip, insert the conductor of the electric wire into the sleeve from both ends of the sleeve, and then rotate the bolt to rotate the sleeve. After the conductor is fixed between the peripheral wall portion and the tip end portion of the bolt, the second insulating cover is attached to both the first insulating covers in a state of covering the sleeve and the first insulating covers. Wire connection tool.   6. The electric wire according to claim 5, wherein the second insulating cover is in the form of a sheet, and after the conductor of the electric wire is fixed to the sleeve, the second insulating cover is wound around and attached to the sleeve and both first insulating covers. Connecting tool.

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