JPS6213386Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an anti-snow accretion device for electric wires, particularly covered electric wires.

Generally, when snow falls on the upper surface of a covered wire, the snow rotates downward along the outer circumference of the wire and adheres to the lower surface of the wire. If this phenomenon is repeated, the snow adhering to the lower surface of the wire will grow and increase, eventually turning into a snowdrift that will damage the wire and the supports.

Conventionally, as a means to prevent such snow accumulation, as shown in FIG. A continuous protrusion 12 is provided on the surface, and the protrusion 12 prevents snow from rotating downward from the upper surface of the electric wire, and causes the snow to fall before it grows and develops into a pipe. What has been done is known.

However, since this type of electric wire has protrusions that raise the coating layer, it cannot be applied to existing electric wires, and the protrusions may become spiral-shaped due to twisting of the wire during installation. There is a risk that it will be erected.

When the protruding portion is in a spiral shape, snow tends to rotate downward along the protruding portion, and easily develops into a snow pipe.

On the other hand, after installation, on both sides of the outer circumference of the electric wire,
A method of attaching a linear body (protrusion) in a straight line along the longitudinal direction of the electric wire may also be considered, but the work involves positioning and attaching the linear body in a straight line along the longitudinal direction of the electric wire. Not only does this have the disadvantage that it becomes troublesome, but the linear bodies attached to both sides of the wire are not placed at symmetrical positions in the cross section of the wire, and there is a risk that their positions may be shifted from each other. In such a case, the amount of snow that adheres to each side of the wire will be different, the wire will become twisted, and the wire body will appear to be wrapped in a spiral around the wire, which may reduce the snow accumulation prevention effect. be.

The present invention improves these drawbacks.

This will be explained based on an embodiment shown in FIGS. 2A to 2C.

In the figure, reference numerals 1 and 2 indicate open ring-shaped parts for attaching electric wires, and 3 and 4 indicate two elongated connecting parts that integrally connect the ring-shaped parts 1 and 2 to each other.

The ring-shaped parts 1 and 2 are made of hard plastic having weather resistance, cold resistance, and heat resistance, and have an open ring shape with a thin part 5 for bending as shown in FIG. 2B. , the opening 6 is widened by bending and deforming through the thin wall portion 5, and the wire 7 is attached to the wire 7.

Further, as shown in FIG. By providing a recess 9 and fitting the two, the ring-shaped parts 1 and 2 can be reliably attached to the electric wire.

The two elongated connecting parts 3, 4 are connected to the ring-shaped parts 1, 2.
The ring-shaped parts 1 and 2 are integrally attached to both ends of the linear body and the ring-shaped parts 1 and 2 are connected to each other, and the elongated connecting parts 3 and 4 The length shall be at least four times the outer diameter of the wire.

The mounting positions of the two elongated connecting parts 3 and 4 are as shown in Fig. For example, if the angle θ is approximately the same as
They are placed at different positions at 90 degree angles.

Note that the elongated connecting portions 3 and 4 are not limited to linear bodies, but may be, for example, belt-shaped bodies having electric wire engagement grooves along the longitudinal direction.

Further, as a means for connecting the elongated connecting parts 3, 4 and the ring-shaped parts 1, 2, any method such as bonding with an adhesive, fusion by high frequency heating, or integrally molding the two can be adopted.

Furthermore, the material of the ring-shaped parts 1, 2 and the elongated connecting parts 3, 4 is not limited to plastic, but may also be metal.
Moreover, not only may they be made of different materials, but also metal may be coated with plastic as the case may be.

Furthermore, the number of the ring-shaped parts 1, 2 may be three or more, and the structure for attaching the ring-shaped parts 1, 2 to the electric wire is not limited to that shown in the embodiment. It may also be attached by adhering with an agent.

The device for preventing snow accretion for electric wires of the present invention configured as described above is used by attaching a plurality of these devices at appropriate intervals with their ring-shaped portions attached to the electric wires. In this case, the two elongated connecting portions 3 and 4 are provided on the ring-shaped portions 1 and 2 at positions shifted from the left and right at approximately the same angle with the thin bending portion 5 of the ring-shaped portions as the center. , attached so that the thin wall portion 5 is located approximately at the center of the upper or lower surface of the electric wire 7, and the two elongated connecting portions 3,
4 are attached at symmetrical positions in the cross section of the electric wire 7.

However, according to the snow prevention device for electric wires of the present invention, there are a plurality of open ring-shaped parts for attaching electric wires, each of which has a thin-walled part for bending, and two ring-shaped parts that connect the ring-shaped parts to each other. When the ring-shaped portion is attached to the electric wire, the two elongated connecting portions are shifted left and right at approximately the same angle from the thin-walled portion for bending in the cross section of the wire. Therefore, by simply positioning the thin bending portion of the ring-shaped portion at the center of the upper or lower surface of the wire, the two elongated connecting portions can be connected in a symmetrical manner in the cross section of the wire. This prevents the elongated connecting portion from being attached to the electric wire in a spiral manner, and preventing the elongated connecting portion from being placed at different positions on the left and right sides of the electric wire. Therefore, the snow on the upper part of the electric wire is prevented from moving to the lower surface by the elongated connecting part, and it falls under its own weight before it develops into a tube of snow, thereby making it possible to reliably and easily prevent an increase in the accumulation of snow on the electric wire. Moreover, the present invention can be applied to both newly installed and existing electric wires.

[Brief explanation of the drawing]

Figure 1 is a sectional view explaining the conventional example, Figure 2
C shows an example of an anti-snow accretion device for electric wires of the present invention,
Figure A is a front view, Figure B is an enlarged sectional view taken along the line A-A' shown in Figure I, and Figure C is an enlarged view of the main parts. 1, 2...Ring-shaped part, 3, 4...Elongated connecting part, 5...Thin part for bending, 7...Electric wire.

Claims (1)

[Scope of utility model registration request] It comprises a plurality of open ring-shaped parts for attaching electric wires, each of which has a thin-walled part for bending, and two elongated connecting parts that connect the ring-shaped parts to each other,
The device for preventing snow accretion of electric wires, wherein the two elongated connecting portions are respectively provided at positions shifted from the thin bending portion at approximately the same angle to the left and right.