JP2840222B2 - Phase marking cover of electric wire and its attachment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phase marking cover for an electric wire attached to an electric wire for identifying phases of electric wires such as a plurality of transmission lines and distribution lines, and to attaching the phase indication cover to the electric wire. The present invention relates to an attachment used.

[0002]

2. Description of the Related Art FIG. 10 is a perspective view of a phase mark 1 of a wire 4 showing a typical conventional technique. The phase indicator 1
The phase indicator 1 is attached to the electric wire 4 in order to identify the type of phase of the electric wire 4 that is a plurality of transmission lines or distribution lines based on the color of the line. This is because when a plurality of electric wires 4 are branched, or when power is transmitted from a transmission and distribution line that is transmitted from a substation installed in one power supply area and a substation installed in another power supply area. For example, when wiring is performed between the power transmission and distribution lines, the phases of the wires 4 are different, such as single-phase (U-phase), two-phase (V-phase), and three-phase (W-phase). This is intended to make the operator clearly recognize the difference in the phases during the construction and to prevent the type of each wire 4 from being mistaken, thereby preventing a short circuit accident due to erroneous wiring.

A phase indicator 1 is made of a synthetic resin having flexibility and electrical insulation properties, and has a cylindrical main body 2 formed in a substantially right cylindrical shape divided in a circumferential direction, and a circumferential direction of the cylindrical main body 2. It includes three holding pieces 3a, 3b, 3c that are integrally formed at both ends and hold the electric wire 4 and have a substantially semicircular arc shape.

FIG. 11 is a sectional view taken along the line XI-XI of FIG. The inner peripheral surfaces 5a, 5b, 5c of the holding pieces 3a, 3b, 3c have a curvature substantially equal to the outer diameter of the electric wire 4.

[0005] In order to attach the phase indicator 1 to the electric wire 4, a direct construction method in which a worker wearing insulating gloves directly attaches it by hand, and a gripping tool or manipulator, which is called an insulating glove, is used. There is an indirect construction method to attach and attach, but the former is often used. Here, the former method will be described. When the cylindrical main body 2 is gripped from both sides in one diameter line direction and pressed in the arrow P1 direction, two cylindrical main bodies 2 arranged on both ends in the axial direction of the cylindrical main body 2 are pressed. Holding pieces 3a,
Direction A1, in which the center holding piece 3b is separated from the center holding piece 3b.
Displaced to A2. In this state, one of the holding pieces 3a,
The phase indicator 1 is moved upward so that the electric wire 4 fits between the holding member 3c and the other holding piece 3b.
By releasing the pressing force in one direction, the cylindrical main body 2 is released.
The wire 4 is held at each end piece 3 by the elastic recovery force of
a, 3 c and the center holding piece 3 b, and the phase indicator 1 is attached to the electric wire 4.

[0006]

In the above-mentioned prior art, each of the holding pieces 3a, 3a is formed by the elastic recovery force of the tubular main body 2.
Although the phase indicator 1 is attached to the wire 4 with the wires b and 3c sandwiching the wire 4, there is a case where a tool such as the above-mentioned insulating yoke contacts the phase indicator 1 during strong wind or construction work.
In addition, when the protective tube is attached to the electric wire 4, if the bucket truck can only be stopped near the center between the poles, the protective tube is attached to the electric wire 4 at the stop position of the bucket truck. When a plurality of protective tubes are sequentially mounted while pushing and moving the protective tube along the electric wire 4, when the protective tube is moved without the worker noticing the phase indicator 1 previously mounted near the power pole. In some cases, a protection tube arranged at the head of the movement direction may come into contact with the phase indicator 1. As described above, the contact of the tool of the phase marking tool 1 and the contact of the protective tube causes the phase marking tool 1 to easily fall off the electric wire 4, and the phase marking tool 1 must be reattached to the electric wire 4. There is a problem that it does not. In addition, since the cylindrical main body 2 of the phase indicator 1 has an outer diameter larger than the outer diameter of the electric wire 4, when the phase indicator 1 is attached to the electric wire 4, it is possible to attach a protective tube in the area. Can not. Further, when the phase indicator 1 is attached to the electric wire 4 by the direct construction method, since work gloves having electrical insulation such as rubber are attached, as described above, both ends of the cylindrical main body 2 in the axial direction are attached. The tubular body 2 is gripped and pressed so that the electric wire 4 is arranged between the two holding pieces 3a and 3c to be arranged and the holding piece 3b arranged at the center, and both ends are kept while being separated from each other. Care must be taken to ensure that the electric wire 4 is fitted over the holding pieces 3a, 3c on the side of the unit and the center holding piece 3b. To perform such mounting work on a large number of wires, There is a problem that extremely labor and labor are required, and the efficiency of the mounting operation of the phase indicator 1 is extremely low. Further, when the phase indicator 1 is attached to the electric wire 4 by the indirect construction method, each of the holding pieces 3a, 3b, 3c of the phase indicator 1 must be held between the electric wires 4 by the tool, and the both ends are held. Pieces 3a and 3c and central holding piece 3b
The operation for positioning the phase indicator 1 so that the electric wire 4 is disposed between the two is complicated, and the mounting operation takes time. In addition, the phase indicator 1 may fall off due to the influence of vibration or wind from the tool, and the mounting work efficiency is extremely low.

Accordingly, an object of the present invention is to prevent the wire from easily dropping from the electric wire due to strong wind or contact of a tool.
An object of the present invention is to provide a phase marking cover for an electric wire to which a protective tube can be attached.

It is another object of the present invention to provide an electric wire phase marking cover mounting tool which can easily and quickly perform the mounting work on the electric wire regardless of the direct method or the indirect method.

[0009]

SUMMARY OF THE INVENTION The present invention comprises a synthetic resin having flexibility and electrical insulation, an inner diameter substantially equal to the outer diameter of an electric wire, and a substantially cylindrical shape divided in a circumferential direction. A phase marking cover for an electric wire, wherein a thin portion is formed on an inner peripheral portion of an intermediate portion between both ends in a circumferential direction. According to the present invention, the phase indicator cover is made of a synthetic resin having flexibility and electrical insulation, has an inner diameter substantially equal to the outer diameter of the electric wire, and has a substantially cylindrical shape divided in the circumferential direction. Since the thin portion is formed on the inner peripheral portion of the intermediate portion between both ends in the circumferential direction, the phase mark cover can be easily expanded, and since the phase mark cover is expanded, it can be easily connected to the electric wire. The phase marking cover can be attached, and the inner diameter of the phase marking cover is substantially equal to the outer diameter of the electric wire, so that the phase marking cover adheres to the electric wire and the phase marking cover does not drop. Further, since the shape of the phase mark cover is substantially cylindrical, the protective tube can be mounted on the wire while the phase mark cover is mounted on the wire.

Further, the present invention is characterized in that the synthetic resin has a predetermined color corresponding to a predetermined phase of the electric wire. According to the present invention, since the synthetic resin has a predetermined color corresponding to a predetermined wire phase, it is easy to identify the type of the wire phase.

Further, according to the present invention, a pair of cover holding portions having an inwardly projecting portion are formed at intervals so that the wires can pass therethrough, and the cover holding portion has a substantially cylindrical phase mount to be attached to the wires. A substantially U-shaped fitting portion having a recess into which at least a part of the marking cover can fit is formed in a row, and the inner portion of the recess extends from the inner peripheral surface facing the recess to each cover holding portion. It is a mounting tool for an electric wire phase marking cover, wherein a guide surface that is inclined in a direction away from each other as it approaches each cover holding portion from both ends of the peripheral surface is formed. According to the present invention, the mounting device of the phase marking cover is
Since a pair of cover holding portions having inwardly projecting portions are formed at intervals so that the wires can pass through, by contacting the circumferential ends of the phase marking cover to one side surface of each of the projecting portions, A phase marking cover can be mounted inside the mounting tool. Further, each cover holding portion is formed with a substantially U-shaped fitting portion having a concave portion into which at least a part of the substantially cylindrical phase marking cover to be attached to the electric wire is fitted. From the inner peripheral surface facing the recess to the respective cover holding portions, since the guide surfaces are formed to be inclined in directions away from each other as they approach the inner cover holding portions from both ends of the inner peripheral surface of the recess, By placing the fitting above the wires and moving the fitting below,
Since the phase marking cover is guided by the guide surface and attached to the electric wire, the phase marking cover can be easily attached to the electric wire.

[0012]

FIG. 1 is a perspective view showing a configuration of a phase mark cover 21 of a distribution line 23 and an attachment 22 thereof according to an embodiment of the present invention, and FIG. 2 is a sectional view of FIG. Line II
FIG. 3 is an enlarged cross-sectional view as viewed from -II, and FIG. 3 is a cross-sectional view perpendicular to the axis of the phase indication cover 21 before being mounted on the mounting tool 22. The phase indication cover 21 is made of a synthetic resin having flexibility and electrical insulation, for example, polyethylene, has an inner diameter substantially equal to the outer diameter of the distribution line 23, and has a substantially straight cylindrical shape divided in the circumferential direction. And both ends 30a, 30b in the circumferential direction.
A substantially semi-cylindrical concave groove 37 that opens on the outer peripheral surface is formed in the outer peripheral portion of the intermediate portion in the circumferential center. Therefore, a thin portion 38 which is thinner than other portions is formed on the inner peripheral portion of the intermediate portion between the both end portions 30a and 30b in the circumferential central portion by the remaining portion where the concave groove 37 is formed. . Double-sided tapes 44a and 44b to be described later are adhered to the inner peripheral surface of the phase indication cover 21. Further, the phase marking cover 21 corresponds to the phase of the distribution line 23 to be mounted,
For example, it is colored red, white, and blue, so that the type of the distribution line 23 can be easily identified based on the phase. Further, the phase mark cover 21 is made of a synthetic resin having flexibility and electrical insulation, and the thin portion 38 is formed. Therefore, the rigidity near the thin portion 38 is smaller than other portions, and is largely deformed. Therefore, the operation of expanding the phase indication cover 21 can be easily performed.
Further, since the phase indicator cover 21 has an inner diameter substantially equal to the outer diameter of the distribution line 23, the inner peripheral surface of the phase indicator cover 21 and the outer peripheral surface of the distribution line 23 come into close contact with each other, and the phase indicator cover 21 Does not fall from 23. Further, since the shape of the phase marking cover 21 is substantially a right cylindrical shape, there is no portion protruding from the distribution line 23 unlike the conventional phase marking body, and the protection is performed while the phase marking cover 21 is attached to the distribution line 23. A tube can be attached to the distribution line 23.

The attachment 22 has inwardly projecting portions 26a, 26b.
A pair of cover holding portions 10a and 10b having a concave portion 11 into which at least a part of the phase indication cover 21 to be mounted on the distribution line 23 can be fitted. And a grip portion 24 fixed to one side portion 31 of the fitting portion 27 by, for example, a bolt. The fitting portion 27 is formed with guide surfaces 28a and 28b that are inclined from both ends of the inner peripheral surface of the recess 11 in directions away from each other as the cover holding portions 10a and 10b are approached.

The grip portion 24 has a recess 32 which is gripped by a mounting tool 34 called an insulated screw.

The attachment 22 is made of a synthetic resin having flexibility and electrical insulation, for example, an olefin resin. The cover holding portions 10a and 10b are provided with parallel surfaces 39a and 39b facing each other with a space 25 so that the distribution line 23 can pass therethrough.
And a pair of inwardly projecting portions 26a, 26b having a pair of guide surfaces 40a, 40 inclined in directions away from each other outward (downward in FIG. 2) from lower ends of the parallel surfaces 39a, 39b.
b. Each of the cover holding portions 10a and 10b has
A substantially U-shaped fitting portion 27 having a recess 11 into which at least a part of the phase mark cover 21 to be mounted on the distribution line 23 is fitted is formed, and an inner periphery facing the recess 11 is formed. The guide surfaces 28a, 28b are formed so as to be inclined from both sides of the inner peripheral surface of the recess 11 in the direction away from each other as they approach the cover holding portions 10a, 10b from the surface to the respective cover holding portions 10a, 10b. Is done.

The projections 26a and 26b are formed with side faces 29a and 29b respectively contacting the both end faces 30a and 30b of the phase indication cover 21.
9a and 29b are connected to tapered surfaces 35a and 35b which are formed so as to be inclined in directions away from one end 41a and 41b of the projections 26a and 26b toward the other end 42a and 42b, respectively. Guide surfaces 36a and 36b are formed.

An anti-slip material 33, for example, rubber is adhered to the recess 32 of the grip portion 24. The grip 24
Is gripped by the mounting tool 34 via the non-slip material 33.

One example of the dimensions of the embodiment of the present invention is as follows.
mm, and the thickness t is, for example, about 2 mm. The radius R of the concave groove 37 is, for example, about 1 mm, and the axial length L of the phase indication cover 21 is, for example, 1 mm.
It is about 20 mm.

The phase mark cover 21 and the mounting tool 22 can be manufactured, for example, by extrusion.

FIG. 4 shows that the phase mark cover 21 is
FIG. 6 is a cross-sectional view perpendicular to the axis showing a procedure for mounting the device on a shaft. Fig. 4 (1)
Shows a state in which the phase mark cover 21 is mounted, and the mounting tool 22 is arranged above the distribution line 23 by using the mounting tool 34. The side surface 29a of each projection 26a, 26b of the mounting tool 22,
29b, the both ends 30a, 3 of the phase indicator cover 21
0b, the phase indication cover 21 is expanded around the center portion, and the end portions 30a, 30b are attached to the side surfaces 29a, 29b.
30b, and the inner peripheral surface and the other end surface 3 at the center of the both ends 30a and 30b of the phase indicator cover 21.
For example, butyl rubber-based double-sided tapes 44a and 44b are applied to the inner peripheral surface between
The phase mark cover 21 is attached by sticking about m width. Thereafter, the gripping portion 24 is gripped by using the mounting tool 34, and the mounting tool 22 is arranged above the distribution line 23.

FIG. 4B shows a state in which the mounting tool 34 is pulled downward and the distribution line 23 is in contact with the phase mark cover 21. When the mounting tool 34 is pulled downward, the distribution line 23 passes through the space 25 and
4a, and the two end portions 30a, 30
The inner peripheral surface at the center of b and the outer peripheral surface of the distribution line 23 are fixed. Here, when the distribution line 23 is not disposed immediately below the interval 25, the distribution line 23 is connected to each of the guide surfaces 40a, 4a.
0b and is guided and guided by the distance 25
Can pass through.

FIG. 4 (3) shows a state in which the mounting tool 34 is pulled further downward and the phase marking cover 21 is mounted on the distribution line 23. When the mounting tool 34 is further pulled downward, the phase indicator cover 21 is pushed up by the distribution line 23, and the both ends 30a and 30b are connected to the respective guide surfaces 36.
a and 36b, respectively, and abuts on the outer peripheral surface of the distribution line 23. Thereafter, the outer peripheral portion of the phase mark cover 21 is guided by the guide surfaces 28a and 28b, and the phase mark cover 21 is pressed and mounted on the distribution line 23.

FIG. 4 (4) shows a state in which the mounting tool 34 is pulled further downward, and the phase marking cover 21 is completely mounted on the distribution line 23. When the mounting tool 34 is further pulled downward, a part of the phase mark cover 21 fits into the recess 11 and the shape of the phase mark cover 21 is adjusted.
The remaining double-sided tape 44b fixes the phase indicator cover 21 and the distribution line 23.

In this manner, the phase mark cover 21 is mounted in the mounting tool 22, the mounting tool 22 is disposed above the distribution line 23, and the mounting tool 22 is moved downward, so that the mounting tool 22 can be easily moved. The phase marking cover 21 can be attached to the distribution line 23. On the lower side of the distribution line 23,
The presence of the opening 45 of the phase indication cover 21 makes it difficult for rainwater and dust to collect.

FIG. 5 shows a state in which the phase mark cover 21 is attached to the distribution line 23.
It is a perspective view showing the state where was attached. A holding insulator 49a is connected to the arm bar 47 of the telephone pole 46 via a strap 48, and another holding insulator 49b is connected to the holding insulator 49a, and the distribution line 23 is connected to the holding insulator 49b.
Are locked respectively. When the three branch lines 43 are branched from the three distribution lines 23, currents of different phases are flowing through the respective distribution lines 23. To prevent erroneous wiring to different phases, the phase indication cover 21 is red and white. , And blue, and are individually attached to each distribution line 23 for each phase.

FIG. 6 shows a phase mark cover 5 having a guide piece 52 of a phase mark cover 55 according to another embodiment of the present invention.
FIG. 7 is a perspective view of the mounting tool 50 of FIG. 5, and FIG. 7 is a partial perspective view of the mounting tool 50 as viewed from an arrow E in FIG. In the present embodiment, portions corresponding to the embodiment shown in FIGS. 1 to 5 are denoted by the same reference numerals, and description thereof will be omitted. Each cover holding part 10 of the mounting tool 50
The grooves 53a, 5b having a rectangular cross section having a bottom surface connected to the side surfaces 29a, 29b are formed on one end surfaces of the a, 10b.
A pair of guide pieces 52a and 52b on which 3b is formed are provided detachably. The groove 53 is defined by a pair of inner surfaces facing each other at both ends of the bottom surface (both ends in the vertical direction in FIG. 7) at right angles. Each guide piece 52
a, 52b and the grooves 53a, 53b extend from one end 54a, 54b of the guide piece 52a, 52b to the other end 5a.
As it approaches 4c and 54d, it is formed to be inclined in a direction away from each other.

FIG. 8 is a perspective view showing a phase mark cover 55 mounted on the mounting tool 50 using the guide pieces 52a and 52b. FIG. 9 is a perspective view showing the phase mark cover 5 shown in FIG.
It is the bottom view which looked at 5 from the lower part. Phase marking cover 55
Are one end portions 56a, 5 of the circumferential end surfaces 30a, 30b.
6b, the guide surfaces 58a and 58b are formed to be inclined in directions away from each other as they approach the other end portions 57a and 57b of the one end surface 57 in the axial direction.

The distance L2 between the other end portions 57a and 57b is, as shown in FIG.
a, 52b at each end 54a, 54b.
It is selected to be larger than the distance L1 between the bottom surfaces of 3a and 53b. Therefore, each of the guide surfaces 58a, 58b can be easily fitted into each of the grooves 53a, 53b, and the phase indicator cover 55 is guided by the guide pieces 52a, 52b, thereby facilitating the mounting. It can be inserted and mounted within 50.

The guide pieces 52a and 52b, the phase indicator cover 55, and the mounting tool 50 are made of, for example, an olefin-based synthetic resin, and can be manufactured by, for example, extrusion molding. In the above embodiment, the guide pieces 52a and 52b may be provided detachably on the mounting tool 50, and may be formed integrally with the mounting tool 50. In this case, it is necessary to provide an interval between the guide pieces 52a and 52b so that the distribution line 23 can pass therethrough.

In each of the above embodiments, the double-sided tape is
Although it is stuck to the location, it may be stuck to one or three or more places, or to the entire inner peripheral surface of the phase marking cover.

In each of the above embodiments, the distribution line 23
Although the phase mark covers 21 and 55 and the mounting tools 22 and 50 attached thereto are described above, as still another embodiment of the present invention, the phase mark cover 2
The present invention can also be suitably implemented to mount the mounting members 1 and 55 and the mounting tools 22 and 50 on a power transmission line. Further, the concave groove 37 and the thin portion 38 of each of the phase marking covers 21 and 55 are formed only at one place at the center in the circumferential direction of each of the phase marking covers 21 and 55, but still another embodiment of the present invention. Any device between both ends in the circumferential direction of each of the phase indication covers 21 and 55, for example, 0 ° from the center to both sides in the circumferential direction
A plurality of positions may be provided at shifted positions within a range of up to 45 °. Thus, when the phase marking cover is attached to the electric wire, the force for expanding the wire is reduced, and the electric wire can be attached smoothly. Furthermore, by appropriately selecting the depth and width of the concave groove 37 in accordance with the rigidity of the phase mark cover, elasticity that does not require excessively widening force at the time of mounting and that can reliably prevent falling off from the electric wire can be obtained. Can provide resilience.

[0032]

As described above, according to the present invention, the phase indicator cover is made of a synthetic resin having flexibility and electrical insulation, has an inner diameter substantially equal to the outer diameter of the electric wire, and is divided in the circumferential direction. The thin part is more easily deformed than other parts because the thin part is formed in the inner peripheral part of the intermediate part between the two ends in the circumferential direction. It can be easily expanded. Further, since the phase mark cover can be opened, the phase mark cover can be easily attached to the electric wire. Further, since the inner diameter of the phase indicator cover is substantially equal to the outer diameter of the electric wire, the inner peripheral surface of the phase indicator cover and the outer peripheral surface of the electric wire are in close contact with each other, so that the phase indicator cover does not fall from the electric wire. In addition, since the shape of the phase marking cover is substantially cylindrical, the protective tube can be attached to the electric wire while the phase marking cover is attached to the electric wire.

According to the present invention, the synthetic resin has a predetermined color corresponding to a predetermined wire phase.
It is easy to identify the type based on the phase of the electric wire, and it is possible to prevent erroneous wiring to an electric wire having a different phase in construction work such as branching the electric wire.

Further, according to the present invention, a pair of cover holding portions having inwardly projecting portions are formed on the mounting device of the phase indicating cover at intervals so that the electric wires can pass therethrough. By contacting both ends in the circumferential direction of the phase mark cover expanded on one side, the phase mark cover can be mounted inside the mounting tool. Further, each cover holding portion is formed with a substantially U-shaped fitting portion having a recess into which at least a part of the substantially cylindrical phase marking cover to be attached to the electric wire can be fitted, From the inner peripheral surface facing the recess to each cover holding portion, a guide surface that is inclined in a direction away from each other as it approaches each cover holding portion from both ends of the inner peripheral surface of the recess is formed,
When the mounting tool is arranged above the electric wire and the mounting tool is moved downward, the phase marking cover mounted inside the mounting tool is guided by the outer peripheral portion abutting on the guide surface and mounted on the electric wire. It can be completely mounted by the fitting part. Thus, the phase marking cover can be easily attached to the electric wire.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a distribution line phase mark cover 21 and a mounting tool 22 thereof according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along a section line II-II in FIG.

FIG. 3 shows a phase mark cover 21 before being mounted on the mounting tool 22.
3 is a sectional view taken along a line perpendicular to the axis of FIG.

FIG. 4 is a cross-sectional view at right angles to the axis, showing a method of attaching the phase indication cover 21 to the distribution line 23. FIG. 4A shows a state in which the phase mark cover 21 is mounted, and the mounting tool 22 is arranged above the distribution line 23 using the mounting tool 34.
(2) pulling the mounting tool 34 downward,
4 shows a state in which it is in contact with the phase mark cover 21, and FIG.
(3) shows the state where the mounting tool 34 is pulled further downward and the phase indicating cover 21 is attached to the distribution line 23. FIG. 4 (4) shows that the mounting tool 34 is pulled further downward and the phase indicating cover 21 is pulled. 21 shows a state where the power supply 21 is completely attached to the distribution line 23.

FIG. 5 is a perspective view showing a state where the phase marking cover 21 is attached to the distribution line 23.

FIG. 6 is a perspective view of a mounting tool 50 of a phase marking cover 55 having a guide piece 52 of the phase marking cover 55 according to another embodiment of the present invention.

FIG. 7 is a partial perspective view as viewed from an arrow E in FIG. 6;

FIG. 8 is a perspective view showing a phase mark cover 55 mounted on the mounting tool 50 using the guide pieces 52a and 52b.

FIG. 9 is a bottom view of the phase mark cover 55 shown in FIG. 8 as viewed from below.

FIG. 10 is a perspective view of a phase mark 1 of the electric wire 4 showing a conventional technique.

FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. 10;

[Explanation of symbols]

 10a, 10b Cover holding part 11 Concave part 21, 55 Phase indication cover 22, 50 Fitting 23 Distribution line 24 Grip part 25 Interval 26a, 26b Inward projection 27 Fitting part 28a, 28b Guide surface 30a, 30b Phase indication cover Circumferential end face 34 Mounting tool 38 Thin part

Continuation of the front page (56) References JP-A 7-29720 (JP, U) JP-A 7-29718 (JP, U) JP-A 1-171524 (JP, U) JP-A 7-3229 (JP) , U) Japanese Utility Model Hei 2-14228 (JP, U) Japanese Patent Publication No. 60-10483 (JP, B2) Japanese Utility Model 64-4184 (JP, Y2) Japanese Utility Model Hei 7-29692 (JP, Y2) 32-16070 (JP, Y1) Jikgyo 32-13956 (JP, Y1) Jikgaku Sho 33-6278 (JP, Y1) Jikgyo 43-22758 (JP, Y1) (58) Field surveyed (Int. Cl. ⁶ , DB name) H02G 7/00-7/22

Claims (3)

(57) [Claims] 1. A substantially cylindrical shape which is made of a synthetic resin having flexibility and electrical insulation, has an inner diameter substantially equal to the outer diameter of an electric wire, is divided in a circumferential direction, and has both ends in a circumferential direction. A phase marking cover for an electric wire, characterized in that a thin portion is formed in an inner peripheral portion of an intermediate portion therebetween. 2. The method according to claim 1, wherein the synthetic resin has a predetermined color corresponding to a predetermined phase of the electric wire.
The phase marking cover of the described electric wire. 3. A pair of cover holding portions having an inwardly projecting portion are formed at intervals so that the electric wires can pass therethrough, and the cover holding portion has a substantially cylindrical phase mark cover to be attached to the electric wires. A substantially U-shaped fitting portion having a recess in which at least a part can be fitted is formed continuously, and extends from an inner peripheral surface facing the concave portion to each cover holding portion. A mounting tool for an electric wire phase marking cover, wherein guide surfaces that are inclined in directions away from each other as approaching each cover holding portion from both ends are formed.