WO2018174461A1

WO2018174461A1 - Electric wire protecting insulation cover

Info

Publication number: WO2018174461A1
Application number: PCT/KR2018/002982
Authority: WO
Inventors: 임정훈; 임서정; 배상우
Original assignee: 주식회사 거성에코
Priority date: 2017-03-20
Filing date: 2018-03-14
Publication date: 2018-09-27
Also published as: KR101761602B1

Abstract

The present invention relates to an electric wire protecting insulation cover and, more specifically, to an electric wire protecting insulation cover, which: is coupled to an outer part of an electric wire so as to protect the electric wire from an external contact; has excellent coupling properties and insulation properties; and does not easily corrode even after long term exposure to external environmental factors (snow, rain, wind, and the like). The electric wire protecting insulation cover, according to the present invention, comprises: a hollow body for covering and protecting an electric wire; and a coupling part formed to correspond to a cut part, which is cut in the lengthwise direction of the body and coupled to the cut part, wherein the coupling part includes: a first extended part extending outwardly in the lengthwise direction of the body from one side of the cut part, and having a plurality of close-contact protrusions protruding at a predetermined distance from the inner side thereof, and a fixing protrusion protruding from one end of the inner side thereof; and a second extended part extending in the lengthwise direction of the body from the other side of the cut part, and having, on the inner side thereof, a plurality of insertion grooves in which the close-contact protrusions are inserted and a fixing groove part in which the fixing protrusion is inserted and is caught and fixed.

Description

Insulation cover for wire protection

The present invention relates to an insulation cover for protecting the wire, and more particularly, is coupled to the outside of the wire to protect the wire, including the high-voltage cable from external contact, etc., has excellent bonding and insulation properties, such as snow, rain, wind, etc. The present invention relates to an insulation cover for protecting wires that does not easily corrode even after long-term exposure from environmental factors.

In general, trees near the power transmission tower, such as electric poles and high-voltage lines on the roadside is lush, so that the covering of the wire is peeled off, resulting in an electric shock due to a short circuit.

In particular, when construction or live work is carried out around high or special high-voltage overhead distribution lines, the worker or work equipment is frequently accessed on the overhead distribution line, thereby preventing electrical safety accidents or line failures. Cover it to prevent electrical accidents.

Insulation cover used to protect the electric wire is to be coupled to and separated by the worker to climb the electric pole to open the opening of the insulating cover to the area where the wire is connected.

An example of such a technique is disclosed in Patent Document 1 below.

Patent Document 1, in the wire protection tube made of an insulator wrapped around the wire, the protective tube, the body portion is formed to wrap and protect the wire, on both sides of the body portion is formed to face the hook and the coupling groove facing each other elastically coupled Disclosed is a wire protection tube characterized in that the coupling protrusion and the coupling recess is configured.

However, the conventional technique as described above, when coupled to the outside of the electric wire, when the hook portion of the coupling protrusion is coupled to the coupling groove of the coupling recess is not tightly adhered to the problem that the leakage of electricity between the gap as a gap occurs. In addition, not only excellent insulation but also a problem of easily corroded when exposed to the outside for a long time.

Republic of Korea Utility Model Registration Publication No. 20-0341989 (registered on February 04, 2004)

An object of the present invention is to solve the problems as described above, when using the insulation cover to reinforce the adhesion by a plurality of contact protrusions and the insertion groove, and the fixing projections are coupled to the three points of the fixing groove portion Accordingly, an object of the present invention is to provide an insulating cover for protecting a wire that can be firmly coupled without a gap.

In addition, it is an object to provide an insulating cover for protecting the wire to prevent corrosion by preventing the penetration of ultraviolet rays or moisture as well as excellent insulation by mixing fluorine resin with polyurethane resin.

In addition, an object of the present invention is to provide an insulation cover for protecting a wire that can provide an insulation effect by a space forming a plurality of air layers formed by coupling a close protrusion to an insertion groove.

Insulating cover for protecting the wire according to the present invention for achieving the above object is formed to correspond to each other in the hollow body 10 and the cut-out portion 11 formed in the longitudinal direction of the body 10 to wrap and protect the wire In the insulating cover for protecting the wire comprising a coupling portion 20 is coupled to, the coupling portion 20 is formed to extend outward along the longitudinal direction of the body 10 on one side of the cutout 11, the inner side A first extension part 21 having a plurality of contact protrusions 211 protruding from each other at a predetermined interval and a fixing protrusion 212 protruding at one end thereof; A plurality of insertion grooves 221 and the fixing protrusions 212 which are formed along the lengthwise direction of the first extension part 21 on the other side of the cutout part 11, into which the contact protrusion 211 is inserted. It is characterized in that it comprises a second extension portion 22 having a fixing groove 222 is inserted and locked.

In addition, the body 10 and the coupling portion 20 is 70 to 80% by weight of polyurethane resin, 10 to 20% by weight of styrene butadiene-styrene block copolymer, 5 to 10% by weight of fluororesin and 2 to 5% by weight of aluminum hydroxide. It is characterized by including the%.

In addition, the fixing protrusion 212 includes a stepped portion 212a extending in a direction orthogonal to the first extension portion and a protrusion 212b protruding in a triangle shape at an end of the stepped portion 212a. The fixing groove 222 is formed in communication with one side of the rectangular groove 222a and the groove 222a formed to have a size corresponding to the size of the protrusion 212b so that the rear surface of the protrusion 212b is caught. It characterized in that it comprises a hook portion 222b is fixed.

In addition, the width (W1) to form the insertion groove 221 is formed to be wider than the width (W2) that the contact protrusion 211 is formed to protrude, the contact protrusion 211 is coupled to the insertion groove 221 is in close contact Constant spaces S1 and S2 are formed between the side surfaces 213a and 231b of the protrusion 211 and the side surfaces 223a and 223b of the insertion groove 221, and the front surface 214 and the insertion groove of the close protrusion 211. Corresponding surfaces 224 of 221 may be in contact with each other.

In addition, the protruding portion 212b of the fixing protrusion 212 has the tip 215 contacting the intermediate point of the corresponding surface 224 of the recess 222a, and the

side surfaces

216 and 216a of the protruding portion 212b are It is characterized in that it is coupled to contact with the side (226, 226a) of the recess 222a.

In addition, the edge portion of the contact protrusion 211 and the edge portion of the insertion groove 221 is characterized in that the curved surface (a, b, c, d, e, f, g, h).

As described above, the insulation cover for protecting the wire according to the present invention, as well as reinforcing the adhesion by a plurality of adhesion protrusions and the insertion groove as well as the fixing projections to be in contact with the fixed groove portion can be firmly coupled without gaps, excellent It protects wires by maintaining airtightness.

In addition, the fluororesin is mixed with the polyurethane resin to provide excellent insulation and to prevent corrosion by blocking penetration of ultraviolet rays or moisture.

In addition, there is an effect of providing an insulating effect by the space constituting the air layer formed while the insulating cover is coupled to surround the wire.

1 is a perspective view showing an insulating cover for protecting the wire according to the present invention.

Figure 2 is a front view showing a coupled state of the insulating cover for protecting the wire according to the present invention.

Figure 3 is a perspective view showing an open state of the insulating cover for protecting the wire according to the present invention.

4 is a front view showing the insulating cover for protecting the wire according to FIG.

5 is a cross-sectional view showing an insulating cover for protecting the wire according to the present invention.

Figure 6 is an enlarged view showing a coupling state of the fixing protrusion according to the present invention.

10: Body 11: Incision

20: engaging portion 21: first extension portion

22: second extension portion 211: adhesion protrusion

212: fixing protrusion 212a: stepped portion

212b: protrusions 213a, 213b: side

214: front side 215: tip

216, 216a: side 221: insertion groove

222: fixing groove 222a: groove groove

222b: hook

portions

223 and 223a: side surfaces

224: corresponding surface 225: corresponding surface

226 and 226a: sides S1 and S2: space

a, b, c, d, e, f: surface

The terms or words used in this specification and claims are not to be construed as being limited to their ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best describe their invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, and various equivalents may be substituted for them at the time of the present application. It should be understood that there may be variations and examples.

Before describing the present invention with reference to the drawings, it is not shown or specifically described for the matters that are not necessary to reveal the gist of the present invention, that is, those skilled in the art can obviously add. Make a note.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view showing an insulating cover for protecting the wire according to the present invention, Figure 2 is a front view showing a coupling state of the insulating cover for protecting the wire according to the present invention, Figure 3 is an opening of the insulating cover for protecting the wire according to the invention Figure 4 is a perspective view showing a state, Figure 4 is a front view showing the insulation cover for protecting the wire according to Figure 3, Figure 5 is a cross-sectional view showing the insulation cover for protecting the wire according to the present invention.

As shown in Figure 1 to 5, the insulation cover for protecting the wire according to the present invention is a hollow body 10 for wrapping and protecting the electric wire, and in the cut-out portion 11 formed in the longitudinal direction of the body 10 It includes a coupling portion 20 is formed to correspond to each other.

The body 10 is formed of a hollow circular body to surround the outside of the wire, and is installed on the wire by opening to both sides through the cutout portion 11 formed in the longitudinal direction of the body 10 to protect the wire.

The body 10 is preferably made of a synthetic resin material of a flexible material to surround the wire.

More preferably, the body 10 and the coupling portion 20 is 70 to 80% by weight of polyurethane resin, 10 to 20% by weight of styrene butadiene-styrene block copolymer, 5 to 10% by weight of fluororesin and aluminum hydroxide 2 5 wt%.

The polyurethane resin is excellent in tensile strength and wear resistance, and is commonly used in almost all fields of polymer materials such as plastics, paints, adhesives, and synthetic leathers.

When the polyurethane resin content is less than 70% by weight, the effect of improving tensile strength and abrasion resistance is insignificant. When the polyurethane resin content is more than 80% by weight, the ductility is strong and deformation is easily caused by the load.

The styrene-butadiene-styrene block copolymer is used to improve the hardness, specific gravity and injection processability of the polyurethane resin.

When using the polyurethane resin alone, there is a problem that the hardness and specific gravity are high, weather resistance and injection processability is lowered, and when the polyurethane resin itself is used with a lower hardness, the injection processability is lowered due to stickiness. There is a limit to using this alone, but by including the styrene butadiene-styrene block copolymer within the composition range can improve the hardness, specific gravity, injection processability and the like.

If the content of the styrene-butadiene-styrene block copolymer is less than 10% by weight, injection processability is lowered, and if it exceeds 20% by weight, there is a problem that wear resistance is lowered.

The fluorocarbon resin is also called teflon resin, and has low air permeability and excellent electrical insulation, heat resistance, oil resistance, and non-tackiness. Therefore, there is an advantage that it is possible to ensure stable insulation performance even in contact with the liquid.

In particular, fluorine resin is a crystalline polymer with a melting point of 327 ° C. Its continuous use temperature is 260 ° C, and has excellent heat resistance that can be used stably from low temperature to high temperature. Will be.

If the content of the fluororesin is less than 5% by weight, the insulating effect is lowered, if it exceeds 10% by weight there is a problem that the workability of the resin composition is lowered.

The aluminum hydroxide is used to prevent oxidation and corrosion.

When the content of the aluminum hydroxide is less than 2% by weight, the oxidation and corrosion protection effects are insignificant, and when the content of the aluminum hydroxide is more than 5% by weight, curing becomes faster and workability is lowered.

The coupling part 20 includes a first extension part 21 and a second extension part 22 formed to correspond to each other in the cutout part 11 of the body 10.

The first extension portion 21 is formed to extend outward along the longitudinal direction of the body 10 on one side of the cutout (11).

The first extension part 21 has a plurality of contact protrusions 211 protruding at a predetermined interval therein and fixing protrusions 212 protruding at one inner end thereof.

The close contact protrusion 211 is formed extending in the direction orthogonal to the first extension portion 21, preferably made of a square or circular shape.

The adhesion protrusion 211 serves to reinforce the adhesion while being closely coupled to the insertion groove 221 formed in the second extension portion 22 when the first extension portion 21 and the second extension portion 22 are coupled to each other. .

The fixing protrusion 212 includes a stepped portion 212a extending in a direction orthogonal to the first extension portion 21 and a protrusion 212b protruding in a triangle shape at an end of the stepped portion.

6 is an enlarged view illustrating a coupling state of the fixing protrusion according to the present invention. The protrusion 212b of the fixing protrusion 212 has a tip 215 in the middle of the corresponding surface 224 of the recess 222a. Contact point.

In addition, the side surfaces 216 and 216a of the protrusion 212b are coupled to the side surfaces 226 and 226a of the recess 222a.

Therefore, in the state where the protrusion 212b is inserted into the recess 222a. The tip 215 and the side surfaces 216 and 216a of the protrusion 212b come into contact with the corresponding surface 225 and the side surfaces 226 and 226a of the urging portion 222a so that the protrusion 212b can be firmly coupled without flow. have.

The second extension part 22 extends along the longitudinal direction of the body 10 on the other side of the cutout 11.

The second extension part 22 has a plurality of insertion grooves 221 into which the contact protrusion 211 is inserted and a fixing groove part 222 into which the fixing protrusion 212 is inserted and locked.

The insertion groove 221 is preferably formed in the same shape as the shape of the close contact protrusion 211, in particular formed in a width larger than the width of the close contact protrusion 211, the close contact protrusion 211 is coupled to the layer at the same time A plurality of spaces S1 and S2 are formed, and an insulation effect can be obtained by the spaces S1 and S2.

The fixing groove 222 is formed in communication with one side of the rectangular groove portion 222a and the groove portion 222a formed to have a size corresponding to the size of the protrusion portion 212b, so that the rear surface of the protrusion portion 212b is fixed. It includes a hook portion 222b.

That is, when the protrusion 212b of the fixing protrusion 212 is coupled to the groove portion 222a, the protrusion 212b, which has been contracted, is seated on the groove portion 222a and is returned to its original state while being rearward of the protrusion 212b. This hook is caught and firmly coupled.

The space | interval of space S1, S2 is not limited, It is preferable to form in 1.0-1.5 mm range.

As such, the present invention primarily reinforces the adhesion force by the plurality of contact protrusions 211 and the insertion groove 221, and as the second fixed projections 212 are coupled to the three points of the fixed groove portion to be contacted without a gap Can be firmly combined.

The corner portion of the contact protrusion 211 is formed of a rounded surface (a, b, c, d) of a predetermined radius of curvature,

In addition, the edge portion of the insertion groove 221 is formed of curved surfaces (e, f, g, h) rounded to a constant radius of curvature.

The curved surfaces (a, b, c, d, e, f) is to suppress the concentration of the electric shock to prevent electrical degradation thereby improving the durability of the insulating cover.

The radius of curvature for forming the curved surfaces a, b, c, d, e, and f is not limited.

Hereinafter, the operation of the insulation cover for protecting the wire according to the present invention.

The present invention wraps and covers the electric wire with a body 10 that can block the penetration of ultraviolet rays or moisture, and prevent corrosion, and the position by the combination of the first extension portion 21 and the second extension portion 22. Fix it.

More specifically, when the first extension portion 21 and the second extension portion 22 are coupled, first, the contact protrusions 211 are formed in the plurality of insertion grooves 221 formed in the second extension portion 22, respectively. While tightly coupled to reinforce the adhesion. In addition, it may provide an insulation effect by the space (S2, S2) to form a plurality of air worm formed while the close contact 211 is coupled to the insertion groove (221).

After the close contact protrusion 211 and the insertion groove 221 is coupled, the protrusion 212b of the fixing protrusion 212 is the intermediate point and

side surfaces

226, 226a of the groove 222a, the corresponding surface 225 of the fixing groove 212. Are coupled to each contact. Therefore, the protrusions 212b may be firmly coupled without flow by contacting the three points of the recesses 222a, respectively.

Hereinafter, preferred embodiments will be presented to help understanding the insulation cover for protecting a wire according to the present invention, and the present invention is not limited to the following examples.

In addition, the comparative examples that can be compared with the embodiments of the present invention in order to more easily understand the characteristics of the embodiments are presented.

Example 1

The mixture was prepared by stirring 70% by weight of polyurethane resin, 20% by weight of styrenebutadiene-styrene block copolymer, 5% by weight of fluororesin, 2% by weight of aluminum hydroxide, and 3% by weight of other binder to have viscosity. The prepared mixture was introduced into an extruder to prepare an insulation cover for protecting a wire having a thickness of 3 mm.

Example 2

The mixture was prepared by stirring 70% by weight of polyurethane resin, 20% by weight of styrenebutadiene-styrene block copolymer, 6% by weight of fluororesin, 2% by weight of aluminum hydroxide, and 2% by weight of other binder to have viscosity. The prepared mixture was introduced into an extruder to prepare an insulation cover for protecting a wire having a thickness of 3 mm.

Example 3

The mixture was prepared by stirring 70% by weight of polyurethane resin, 20% by weight of styrenebutadiene-styrene block copolymer, 7% by weight of fluororesin and 2% by weight of aluminum hydroxide, and 1% by weight of the other binder to have viscosity. The prepared mixture was introduced into an extruder to prepare an insulation cover for protecting a wire having a thickness of 3 mm.

Comparative Example 1

Polyurethane resin wire insulated cover supplied to KEPCO was purchased and used.

The following test example shows the experimental results comparing the characteristics of the Examples and Comparative Examples according to the present invention to more easily understand the characteristics of Examples 1 to 3 according to the present invention.

[Test Example]

Tensile strength test was conducted using a universal testing machine in accordance with KS M6518.

Insulation test was carried out for 1 minute withstand voltage and insulation resistance value using a withstand voltage tester at a voltage of 2,000V.

The corrosion resistance test was carried out using the salt spray test according to KS D9502.

TABLE 1

As shown in Table 1, Examples 1 to 3 are excellent in tensile strength, insulation and corrosion resistance, while Comparative Example is inferior in tensile strength, leakage current occurs in the insulation test, and corrosion occurs in the corrosion resistance test. I could see.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many other modifications are possible without departing from the scope of the invention from this description.

Insulating cover for protecting the wire according to the present invention, as well as reinforcing the adhesion by a plurality of contact protrusions and the insertion groove, as well as the fixing projections to be in contact with the fixing grooves can be firmly coupled without gap, maintaining excellent airtightness It has the effect of protecting the wire, so it is highly applicable to the industry.

Claims

Insulating cover for electric wire protection including a hollow body 10 for wrapping and protecting the electric wire, and a coupling portion 20 formed to be coupled to each other in the cutout portion 11 formed in the longitudinal direction of the body 10 and coupled to each other In

The coupling portion 20 is formed to extend outward along the longitudinal direction of the body 10 on one side of the cutout 11, a plurality of contact protrusions 211 and the inner one end formed to protrude at a predetermined interval inside A first extension portion 21 having a fixing protrusion 212 protruding from it is manifested,

The other side of the cutout portion 11 is formed extending along the longitudinal direction of the body 10, a plurality of insertion grooves 221 and the fixing projections 212 is inserted into the close contact projections inside the fixing protrusions are fixed Insulating cover for electric wire protection, characterized in that it comprises a second extension (22) having a fixing groove (222).
The method of claim 1,

The body 10 and the coupling portion 20 is 70 to 80% by weight of polyurethane resin, 10 to 20% by weight of styrene-butadiene-styrene block copolymer, 5 to 10% by weight of fluororesin and 2 to 5% by weight of aluminum hydroxide. Insulation cover for electric wire protection, characterized in that it comprises.
The method of claim 1,

The fixing protrusion 212 includes a stepped portion 212a extending in a direction orthogonal to the first extension portion 21 and a protrusion 212b protruding in a triangle shape at an end of the stepped portion.

The fixing groove 222 is formed in communication with one side of the rectangular grooves 222a and 222a and the grooves 222a formed to have a size corresponding to the size of the protrusions 212b and the rear surface of the protrusions 212b. Insulation cover for electric wire protection, characterized in that it comprises a hook portion (222b) is fixed.
The method of claim 3,

The protruding portion 212b of the fixing protrusion 212 has a distal end 215 contacting an intermediate point of the corresponding surface 224 of the concave portion 222a, and the side surfaces 216 and 216a of the protruding portion 212b are concave portions. Insulating cover for electric wire protection, characterized in that coupled to contact with the side (226, 226a) of (222a).
The method of claim 1,

The insertion groove 221 is formed in a width larger than the width of the close contact protrusion is in close contact 11 is coupled to the wire protection insulating cover, characterized in that a plurality of spaces (S1, S2) is formed.
The method of claim 1,

The width W1 forming the insertion groove 221 is formed to be wider than the width W2 at which the adhesion protrusion 211 protrudes, and the adhesion protrusion 211 is coupled to the insertion groove 221 while the adhesion protrusion ( Spaces S1 and S2 are formed between the side surfaces 213 and 213a of 211 and the side surfaces 223 and 223a of the insertion groove 221, and the front surface 214 of the contact protrusion 211 and the insertion groove 221. Insulation cover for electric wire protection, characterized in that the corresponding surface of the (224) is in contact with each other.
The method of claim 1,

Insulation cover for electric wire protection, characterized in that the corner portion of the contact protrusion (211) and the corner portion of the insertion groove (221) is formed with a curved surface (a, b, c, d, e, f, g, h).