JP3228434B2 - Cover for waterproofing wire connection part and method for waterproofing wire connection part - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is the wire connecting portion waterproofing cover for use in waterproofing the branch connection portion of the small-sized wire - 及
Those concerning the waterproofing method of the fine branch connection portion.

[0002]

2. Description of the Related Art When waterproofing a wire connecting portion, a cover body provided with a putty-like sealant on its inner surface is conjugated to the wire connecting portion and connected to the cover body with the putty-like sealant. It is known to fill gaps between parts.

[0003] When the electric wire connection portion is a branch connection portion,
A gap of circular contact is formed between the main line and a branch line in contact with the main line, and it is difficult to completely fill the gap of circular contact with the putty-shaped sealant in the above-mentioned cover system, -Defective defects are likely to occur.

In order to solve such a problem, projections are provided on the upper and lower surfaces of the cover body so as to be inserted between the main line and the branch line. It has been proposed to push an object between the main line and the branch line, expand the space between the main line and the branch line, and allow the putty-like sealant in the cover body to flow between the main line and the branch line (Japanese Utility Model Application Laid-Open No. 59-1).
No. 09075).

[0005]

SUMMARY OF THE INVENTION
In order to prevent breakage at the base of the protrusion, it is necessary to make the shape with a certain length in the length direction of the electric wire, but such a protrusion is placed between the main line and the branch line from above and below. When it is pushed in, a tunnel-like space surrounded by the side surfaces of both electric wires and the tip end surfaces of the protrusions from above and below is formed. On the other hand, in the putty-like sealant, not a complete fluid but a viscoelasticity is obtained. Often, because of its slow flow, it cannot flow into the interior before the four sides are closed, in which case the space between the four sides is completely filled with the putty-like sealant. Failure to do so results in seal failure.

When the number of branch lines is two or more,
The main line and the group of branch lines are arranged in a horizontal direction, and the projections are interposed between these electric wires. Therefore, the width of the cover is widened, and it is difficult to make the electric wire connection portion compact.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an excellent watertight and sufficiently compact waterproofing treatment for a wire branch connection portion even when the number of branch lines of the wire branch connection portion is two or more. is there.

[0008]

SUMMARY OF THE INVENTION A cover for waterproofing an electric wire connection part according to the present invention is a cover which is put on an electric wire branch connection part.
The cover body is provided with a putty-shaped sealant on the inner surface of the main body, and the putty-shaped sealant flows into the gap in the cover main body by applying the cover main body on the wire branch connection portion. The protrusions on the upper and lower inner surfaces of the cable
And are provided alternately in the horizontal direction. Waterproofing method of the wire connection portion according to the present invention,
A projection is provided on the upper and lower inner surfaces.
Cover body and putty
A method of waterproofing the wire branch connection portion using a lubricating agent,
When tying the cover body on the wire branch connection,
The sealant is pressurized, and the wires are arranged in a row with the protrusions.
Is shifted up and down.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. The cover for waterproofing the wire connection portion of the present invention is used for waterproofing the branch connection portion of a relatively small-sized wire.
In particular, as shown in FIG. 1, it is advantageous for waterproofing a branch connection part having two or more branch connections. In FIG. 1, 1 indicates a main line, 2 indicates a branch line, and 3 indicates a conductor connection fitting. The conductor of the main line is exposed by peeling a coating layer.
The conductor is exposed by peeling the coating layer from the terminal of the branch line, and the branch lead-out conductor is compression-connected to the main line exposed conductor by a conductor connection fitting.

FIG. 2A is a plan view showing an embodiment of the present invention, and FIGS. 2B and 2C are FIGS.
1 is a cross-sectional view taken along a line in FIG. FIG.
FIG. 3 is a cross-sectional view showing a state in which the cover for waterproofing of the embodiment is conjugated to the electric wire branch connection portion. 2 (a) to 2
In (c), reference numeral 4 denotes a plastic cover body, which has an upper piece 41 and a lower piece 42, which are connected to each other by a hinge 43, and which are engaged with each other. Male and female fittings 411 and 421 are provided.

Reference numeral 5 denotes a main line 1 which comes into contact with the branch line 2 of the electric wire branch connection portion shown in FIG. 1 and a projection provided at a position where the main line 1 can be brought into contact with these branch lines 2. when conjugated, the wire axis direction between the upper and lower as shown in FIG. 3
Are formed on the inner surface of each of the cover body pieces 41 and 42 so that they are alternately arranged in the horizontal direction with the vertical direction .

Reference numeral 6 denotes a putty-shaped sealant attached to the inner surface side of the cover main body 4, which is used to connect the conductor connection fittings of the electric wire branch connection portion, the conductors on both sides thereof, and the end of the coating layer of each electric wire. It is provided so that it can be surrounded by the putty-like sealant. In this case, the putty-like sealant may be provided over the entire length of the cover body, or may be provided only at the central portion of the cover body, and the cover body may be conjugated to the wire branch connection portion. At this time, the putty-like sealant may be flown to both ends of the cover body by the conjugation pressure.

If the electric wire branch connection portion is waterproofed by the electric wire connection portion waterproofing cover according to the present invention, when the cover main body is hung on the electric wire branch connection portion, as shown in FIG. Due to the laterally alternate projections 5,... Of the lower surface, a vertical shear slip occurs between the main line 1 and the branch line 2 in the horizontal arrangement and between the branch lines 2 and 2, and between the main line and the branch line. In addition, the space between the branch lines is vertically separated while both the upper and lower sides are open, and the space between these separations is filled with the putty-like sealant pressurized by tying the cover body.

In this case, the cover body, the putty-like sealant,
The wire coating layers are both strained, and the strain reaches an equilibrium state with the lapse of time based on the elastic properties of the individual materials, and in this process, the gap between the cover body and the wire branch connection portion and between the main line and the branch line are formed. The space is completely filled with the putty-like sealant to ensure excellent sealing properties (the putty-like sealant has a high viscosity.
For this reason, the wires are separated from each other with the top and bottom open.
When this occurs, a gap is created between these wires,
The gap is filled with a fluid putty sealant over time.
H].

In the above description, the branch line and the main line are in horizontal contact with each other until the protrusion comes into contact with the main line, and in this arrangement, the protrusion comes into contact with the main line so that the branch line and the main line are vertically moved smoothly. It is preferable that the distances h and h 'between the protrusions 5 and 5 shown in FIG. 3 be slightly larger than the outer diameter of the main line (the maximum outer diameter electric wire) so as to cause shear slip. The above-mentioned projections may be provided on both sides of the center of the cover, and the conductor connection fitting may be located between these projections.

As shown in FIG. 4, both ends 40, 40 of the cover are provided to improve the workability of pulling out the wire and the appearance.
Is preferably tapered. Further, the upper and lower pieces of the cover main body may be separated from each other, and both ends may be connected to each other by fitting means.

[0017]

According to the present invention, when the electric wire branch connection portion is waterproofed by using the cover body and the putty-like sealant, the cover is provided.
The positions of the upper and lower protrusions in the main body are staggered in the horizontal direction, and the gap between the main line and the branch line formed by the protrusions is open over the entire length, so that the putty seal is provided in the gap. The agent can flow in reliably, and excellent sealability can be guaranteed. Further, since the space between the electric wires is expanded not in the horizontal direction but in the vertical direction, the width of the cover body can be reduced accordingly, and the waterproof cover can be made compact.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an electric wire branch connection portion to be waterproofed by a cover of the present invention.

FIG. 2A is a plan view showing an embodiment of the present invention;
2B is a cross-sectional view taken along the line B-B in FIG. 2A, and FIG. 2C is a cross-sectional view taken along the line C-A in FIG.

FIG. 3 is an explanatory cross-sectional view showing a state in which the cover of the present invention is hung on an electric wire branch connection portion.

FIG. 4 is an explanatory plan view showing another embodiment of the present invention in a state of being conjugated on a wire branch connection portion.

[Explanation of symbols]

 4 Cover body 5 Projection 6 Putty sealant

Claims (2)

(57) [Claims] 1. A putty-like sealant is provided on the inner surface of a cover body to be covered on a wire branch connection portion, and the putty-like sealant is applied by covering the cover body on the wire branch connection portion. In the cover to be flowed into the gap in the cover body, projections are provided on the upper and lower inner surfaces of the cover body so as to be staggered in the horizontal direction with the electric wire axis direction being the vertical direction between the upper and lower sides. Cover for waterproofing wire connection. 2. A projection is provided on the upper and lower inner surfaces in the axial direction of the electric wire.
The cover book which was provided staggered in the horizontal direction with the vertical direction
Waterproof the branch connection of the electric wire using the body and putty-like sealant
Method of tying the cover body over the wire branch connection
At this time, the putty sealant is pressed and the protrusions
Wire connection characterized by shifting up and down between wires in an array
Waterproofing method for connecting part .