JPS6118616Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an insulating watertight cover that covers a wire connection portion.

In recent years, to prevent danger, insulated wires with an insulation coating layer have been used instead of conventional bare wires for overhead electric wires. There is a need for an insulating cover that is adaptable to various sizes and that can be easily insulated. Furthermore, there are many accidents in which conductors are abnormally disconnected within a few years due to stress corrosion cracking caused by infiltration of rainwater etc. from the peeled part of the insulation coating at the connection part, and the watertightness of the insulation cover mentioned above has deteriorated. It is becoming important.

Various types of connection part covers have been proposed in the past, but most of them are split type, attached to the wire connection part from both sides, and fixed to the wires by wrapping insulating tape, which requires no tape wrapping work. The tape winding process was complicated and difficult to work with, and there were individual differences in tape winding due to differences in skill level, and there was a risk that it would be incomplete due to the shape of the connection part. Moreover, the main purpose of conventional covers was to prevent electrical charging and electric shock caused by contact between electric wire connections and external objects, and little consideration was given to watertightness.

To ensure watertightness, use a prevention compound only at the wire outlet of the cover.
There is a model that seals watertight, but since the waterproof compound is not filled inside the cover, the air inside the cover expands and contracts due to temperature changes such as temperature rise when electricity is turned on, and the pressure with the outside increases. It makes a difference,
The drawback was that the watertightness was incomplete due to excessive pressure being applied to the waterproof compound.

This invention was made to eliminate the disadvantages of conventional covers, and it is easy to handle, has good workability, has no individual differences in work, can be installed accurately and quickly, and has complete watertight insulation. The purpose is to provide a watertight cover, and to achieve this purpose, a pressure-deformable viscoelastic waterproofing compound is applied over the wire connection, and an outer skin is provided to enclose the compound in order to press it without any gaps. , the outer shell is cylindrical and surrounds the compound, and is joined on one side of the wire at a joint parallel to the direction of wire extension to form an integral sealed body, and the joint is such that both edges of the joint of the outer skin are A hook that slides and tightens on the surface of edges that overlap each other and whose outer edges are inward, and has a protrusion provided on one edge, and the hook provided on the joint portion of the other edge. It is characterized in that the protrusion is joined by a fastening device constituted by a hole into which the protrusion is inserted and engaged, thereby sealing the compound.

The invention will be explained in detail with reference to the embodiments illustrated below. As shown in the figure, the insulated wire has a structure in which a linear conductor C is covered with an insulating sheath I, but the connection is made by inserting the conductor portion with the sheath removed from both ends of the sleeve and compressing the sleeve, as is well known. Since the connection is made by using an insulating cover 1, a part of the bare conductor is exposed at the connection part, so the connection part is covered with an insulating cover 1 to insulate it, and as described above, it is made watertight. There is a need.

In this invention, the insulating watertight cover 1 is composed of a generally cylindrical outer skin 2 and a viscoelastic waterproofing compound 3 filled in the inside to surround a connecting part (not shown). In order to receive the connection part from the side, there is a cut parallel to the direction of wire extension, and after receiving the wire connection part, this cut is joined at the joint part 4, and a waterproof compound is applied inside. Seal. This joint 4 is
Both edges along the cut are overlapped with each other so that the outer edge can slide on the surface of the inner edge. It is ready to be fitted. Further, as shown, the inner layer of waterproof compound 3 is also joined near the joint 4 and covers the joint without creating any gaps.

As shown, the joint 4 is secured by a fastening device 5. The fastening device consists of a hook 6 formed on one end edge of the outer skin body and a hole 7 into which this hook is hooked. This will ensure anchorage.

The insulating watertight cover of this invention is formed as described above, and the cylindrical outer skin has a joint portion 4.
The waterproofing compound 3 is tightened while sliding at the overlapped portions of both end edges, and the waterproof compound 3 is filled without any gaps on the outside of the wire connection portion, so that the watertightness is completely achieved. Since the material that comes into contact with the wire connection part is a viscoelastic waterproof compound, it covers the outside of the connection part so that there are no gaps, regardless of the shape and size of the connection part, and simply tightens the outer shell. Coupled with the configuration of the device, it is easy to handle and has good workability even when working in high places such as on top of steel towers. Since there is no need for individual work such as taping, work can be carried out quickly and accurately without variations.

[Brief explanation of the drawing]

The figure shows one of the insulated watertight covers for the wire connections of this invention.
It is a perspective view showing an example. 1...Insulating watertight cover, 2...Outer skin, 3...
Waterproof compound, 4...Joint part, 5...Tightening device, 6...Hook, 7...Hole, 8...Protrusion part.

Claims (1)

[Scope of utility model registration request] In order to press and apply a press-deformable viscoelastic waterproofing compound over the entire circumference of the wire connection part without any gaps, the joint part is provided with an outer shell that wraps the compound, and this outer shell extends parallel to the wire extension direction on one side of the wire. It is cylindrical in shape and has a cylindrical shape, and both edges of the outer skin constituting the joint overlap each other, and the outer edge slides on the surface of the inner edge to tighten, and An electric wire characterized in that it is equipped with a fastening device consisting of a hook having a protruding part provided on an end edge, and a hole provided on the other side of the joint part into which the protruding part of the hook is inserted and latched. Insulating watertight cover for connections.