JP3540674B2 - Insulation member for wire connection - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an insulated member that can easily insulate a portion to which an electric wire (including a cable) is connected.
[0002]
[Prior art]
Conventionally, when connecting an electric wire such as a low-voltage power cable, the conductor is exposed by stripping off the insulating coating of the electric wire, the conductors are compression-connected with a connection sleeve, and then an insulating tape is wrapped around the outer periphery of the conductor connection portion. A method of winding a waterproof protective tape so as to straddle an insulating tape winding portion and insulating coatings on both sides thereof has been adopted.
In the case of branch connection, a method is used in which a putty that is rounded to an appropriate size is packed in a junction between the main line and the branch line, then an insulating tape is wound, and a protective tape is wound.
[0003]
[Problems to be solved by the invention]
In the conventional method of insulating treatment, the protective tape is wound after the insulating tape is wound, so two sheet winding steps are required, which is troublesome. In the case of a branch connection, further insulation is required for the part, which requires more time and effort. In addition, variations in the manner in which the sheet is wound tend to occur by the operator, and it is difficult to perform insulation treatment with high airtightness and waterproofness. Further, it is difficult to measure the insulation performance and the like at the connection portion after the insulation treatment.
[0004]
SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to easily and efficiently perform insulation treatment of a wire connection part, obtain high airtightness and waterproofness, and measure insulation performance and the like after insulation treatment. To provide an insulation-treated member for an electric wire connection portion that can easily perform the above-mentioned steps.
[0005]
[Means for Solving the Problems]
In order to achieve this object, the insulation treatment member of the electric wire connection portion according to the present invention uses an insulating adhesive putty sheet having a thickness necessary for insulating the electric wire connection portion, and has one surface of the adhesive putty sheet having insulating protection. A film is stuck, release paper is stuck to the other surface, and cuts or holes for inserting pins of an insulation measuring instrument are formed in the protective film.
It is preferable that a mark indicating a position of a cut or a hole is provided on the surface of the protective film.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an embodiment of the present invention. The insulation-treated member 10 uses an insulating adhesive putty sheet 12 having a thickness necessary for insulating the electric wire connection portion, an insulating protective film 14 is attached to one surface of the adhesive putty sheet 12, and a release paper is attached to the other surface. 16 is attached.
[0007]
The protective film 14 and the release paper 16 function to prevent dust from adhering to the adhesive putty sheet 12. The release paper 16 is peeled off from the adhesive putty sheet 12 when the insulating member 10 is used, but the protective film 14 is integrated with the adhesive putty sheet 12 by the adhesive force of the adhesive putty sheet 12. The protective film 14 itself has no tackiness. The protective film 14 facilitates the operation of winding the adhesive putty sheet 12 without the worker touching the adhesive putty sheet 12, and also functions to protect the adhesive putty sheet 12 from the external environment after winding.
[0008]
The length (the dimension in the vertical direction in FIG. 1A) of the protective film 14 is the same as that of the adhesive putty sheet 12, and the width (the dimension in the left and right direction of FIG. 1A) is set to be larger than that of the adhesive putty sheet 12. As a result, the two sides on both sides of the protective film 14 project outward beyond the two sides on both sides of the adhesive putty sheet 12. If the width of the protective film 14 is larger than the width of the adhesive putty sheet 12 as described above, it is possible to prevent the adhesive putty sheet 12 from protruding from the winding end when the insulating member 10 is wound around the wire connection portion. it can.
[0009]
The release paper 16 is larger in length and width than the adhesive putty sheet 12, and has four sides projecting outward from the four sides of the adhesive putty sheet 12. This is because the adhesion of dust to the peripheral surface of the adhesive putty sheet 12 is minimized and the release paper 16 is easily peeled off during use.
[0010]
Further, a cross-shaped cut 18 is formed in the central part of the protective film 14. This cut is for inserting a pin of an insulation measuring instrument for measuring insulation performance or the like at a connection portion after the insulation treatment. Since the protective film 14 is usually black and the cut 18 is small and hard to see, a mark 20 indicating the position of the cut 18 is printed on the surface of the protective film 14. Further, a mark 22 indicating the winding direction of the insulating member 10 may be printed on the surface of the release paper 16.
[0011]
FIG. 2 shows another embodiment of the present invention. 1 is that the protective film 14 is longer and wider than the adhesive putty sheet 12 so that four sides of the protective film 14 project outward from the four sides of the adhesive putty sheet 12. That is. The other parts are the same as those of the embodiment of FIG. 1, and the same parts are denoted by the same reference numerals and description thereof is omitted.
[0012]
FIG. 3 shows still another embodiment of the present invention. In this embodiment, the insulating members 10 of FIG. 1 are continuous in the length direction by a required number. With such a configuration, it is possible to continuously produce the insulating member 10 and to cut and use the required number of sheets at the construction site. The other parts are the same as those of the embodiment of FIG. 1, and the same parts are denoted by the same reference numerals and description thereof is omitted.
[0013]
Next, a method of using the insulating member of the present invention will be described.
FIG. 4 shows an example in which the linear connecting portions of the wires 24A and 24B are insulated using the insulating member 10 of FIG. Reference numerals 26A and 26B denote conductors obtained by stripping the insulation coating of the electric wires 24A and 24B, and reference numeral 28 denotes a connection sleeve for compressively connecting the conductors 26A and 26B. The insulation treatment member 10 is peeled off from the release paper 16, wound around the conductor connecting portion and the wires 24A, 24B on both sides with the adhesive putty sheet 12 inside, and pressed by grasping the outer periphery by hand. Is fine.
[0014]
Since the adhesive putty sheet 12 has adhesiveness, it adheres well to the conductor connecting portions 26A, 26B, 28 and the electric wires 24A, 24B on both sides thereof, and good airtightness and waterproofness can be obtained. Further, since the adhesive putty sheet 12 has a thickness necessary for insulating the electric wire connection portion, the required insulation can be secured only by winding. Further, since the protective film 14 is stuck to the outside of the adhesive putty sheet 12, the adhesive putty sheet 12 does not stick to the hands during winding, and the winding workability is good. Further, since the protective film 14 is wider than the adhesive putty sheet 12, the winding end of the adhesive putty sheet 12 is covered with the winding end of the protective film 14, and when pressed from the outer circumference after winding, the protective film 14 The adhesive putty sheet 12 does not protrude from the winding end (see FIG. 4B). Therefore, the finished appearance is good.
[0015]
When the insulation performance is measured at the connection portion after the insulation treatment is completed, the pin 30 of the insulation measurement device is inserted from the cut 18 formed in the protective film 14 as shown in FIG. By making contact with the connection sleeve 28, measurement can be easily performed. After the measurement, if the pin 30 is pulled out, the hole is naturally closed by the adhesiveness and flexibility of the adhesive putty sheet 12, and the state almost returns to the state before the measurement. If the portion from which the pin 30 has been removed is concave, the depression can be eliminated by slightly applying pressure around the depression to bring the adhesive putty into the depression. Therefore, the insulation performance of the connection does not decrease even after the measurement.
In the insulation measurement, the insulation performance between the cable conductors at the cable connection portion after the cable is laid is measured. This is performed to check the insulation deterioration of the cable or to check the insulation of the device connected to the cable. Conventionally, since the connection portion was formed by winding a tape, it was necessary to peel off the tape and perform rewinding when measuring the insulation.
[0016]
FIG. 6 shows an example in which a branch connection portion of an electric wire is insulated by using the insulating member 10 shown in FIG. 24C is a main line, 24D is a branch line, 26C and 26D are conductors, and 28 is a connection sleeve. Also in this case, the release paper 16 of the insulating member 10 may be peeled off, wound around the branch connection portion with the adhesive putty sheet 12 inside, and pressurized from the outer periphery. Since the adhesive putty sheet 12 has flexibility and adhesiveness, if pressure is applied from the outer periphery, it enters the cross section of the main line 24C and the branch line 24D and adheres to each other to be united. Processing can be performed.
[0017]
When an insulating member 10 having a protective film 14 projecting from the adhesive putty sheet 12 on four sides as shown in FIG. 2 is used, the adhesive putty sheet 12 is covered with the protective film 10 at the end of winding as shown in FIG. Not only does it not protrude, but also the adhesive putty sheet 12 is covered with the protective film 10 at both ends of the insulating portion as shown in FIG. 6 (a) and does not protrude, so that the finished appearance can be further improved.
[0018]
【The invention's effect】
As described above, when the insulating member of the present invention is used, it is possible to easily and efficiently insulate the wire connection portion, and to obtain high airtightness and waterproofness due to the adhesiveness of the adhesive putty sheet. Further, it is possible to easily measure the insulation performance and the like after the insulation treatment.
[Brief description of the drawings]
1A and 1B show an embodiment of an insulating member according to the present invention, wherein FIG. 1A is a plan view, FIG. 1B is a front view, FIG. 1C is a side view, and FIG.
2A and 2B show another embodiment of the insulating member according to the present invention, wherein FIG. 2A is a plan view, FIG. 2B is a front view, and FIG.
3 (a) is a plan view, FIG. 3 (b) is a front view, and FIG. 3 (c) is a side view showing still another embodiment of the insulating member according to the present invention.
4A and 4B show a state in which an insulation treatment is performed on a straight-line connection portion of an electric wire using the insulation treatment member of the present invention. FIG. 4A is a longitudinal sectional view, and FIG. .
FIG. 5 is a longitudinal sectional view showing a state where a pin is inserted into the insulation-treated portion of FIG. 4 for a test.
FIGS. 6A and 6B show a state in which a branch connection portion of an electric wire is insulated using the insulation-treated member of the present invention. FIG. 6A is a longitudinal sectional view, and FIG. .
[Explanation of symbols]
10: Insulated material
12: Adhesive putty sheet
14: Protective film
16: Release paper
18: Break
20, 22: Mark
24A-24D: Electric wire
26A-26D: conductor
28: Connection sleeve
30: Pin

Claims (2)

Using an insulating adhesive putty sheet having a thickness necessary for insulation of the wire connection portion, an insulating protective film is attached to one surface of the adhesive putty sheet, and release paper is attached to the other surface, and the insulating film is insulated to the protective film. A cutout or hole for inserting a pin of a measuring instrument, wherein the insulation treatment member for an electric wire connection portion is provided. The insulation treatment member for an electric wire connection according to claim 1, wherein a mark indicating a position of a cut or a hole is provided on a surface of the protection film.

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