JPH117995A - Seal material for wire connection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a quality wire joint sealing structure that has a final purpose of covering a wire joint with only its viscoelastic body, while improving the formability in its manufacturing process and the handling in its working process so as to prevent its deformation. SOLUTION: A wire joint sealing member, which is totally made of a viscoelastic body 11, has a sealing member body 12 for covering over a joint of a plurality of electric wires, and a projection 13 integrated to the sealing member body 12, to be situated at the branch point of the joint, on one surface of which sealing member a sheet of released paper 15 harder than the viscoelastic body 11 is fully stuck. The provision of the paper 15 to the one surface of the viscoelastic body 11 allows accurate shaping of the sealing member in the forming process and also easy working of the member free of deformation by the adhesion of the viscoelastic body 11 to other members in the handling process.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing material for a wire connection part.

[0002]

2. Description of the Related Art FIGS. 6 to 8 show a conventional sealing material for an electric wire connection portion. The sealing material 1 is entirely formed of a viscoelastic material such as butyl rubber or silicon rubber, and a plurality of electric wires 6.
It has a sealing material main body 2 that covers the entirety of the connection portions 7 and 8, and a protruding piece 3 that is provided continuously with the sealing material main body 2 and that is interposed at a branch portion of the electric wire connection portion 5. Since this sealing material 1 is simply made of a viscoelastic body, it is only necessary to protect the electric wire connecting portion 5 and then wrap the tape from the outside to make a final finish. Become compact.

[0003]

However, on the contrary, since the sealing material 1 is entirely made of only a viscoelastic material, it is difficult to mold it into a specific shape. There was a problem that it was easy to lose shape and it was difficult to work.

In view of the above circumstances, the present invention can improve the formability at the manufacturing stage and the handleability at the working stage, although it is possible to finally cover the electric wire connection portion only in the form of a viscoelastic body. It is an object of the present invention to provide a sealing material for an electric wire connection portion, which can easily obtain a good quality electric wire connection portion sealing structure while preventing a shape collapse.

[0005]

According to a first aspect of the present invention, there is provided a seal material body for covering a whole connection portion of a plurality of electric wires, and a projection provided continuously with the seal material body and interposed at a branch portion of the wire connection portion. A sealing material for an electric wire connection part, which is made of a viscoelastic body and is entirely formed of a viscoelastic body, characterized in that a release paper harder than the viscoelastic body is attached to one entire surface.

When the sealing material is molded, the viscoelastic body can be punched out with the hard release paper adhered thereto, so that the shape having the projecting pieces can be accurately molded. In addition, when the sealing material is wound around the outer periphery of the electric wire connection portion, it is sufficient to simply press the outer surface of the release paper while putting a hand on the outside, so that the operation can be easily performed with one hand. In addition, if the release paper is peeled off after the sealing material is wound, the viscoelastic body can be left alone, so that the sealing material can be attached without worrying about shape collapse, and the wire connection part is compactly protected. can do.

According to a second aspect of the present invention, there is provided the seal member for an electric wire connecting portion according to the first aspect, wherein a part of the release paper is formed larger than the viscoelastic body and protrudes outside. .

In this sealing material, since a part of the release paper is made larger than the viscoelastic body, it can be easily peeled off after the work is completed. In addition, when pressing the end of the viscoelastic body, it can be performed while grasping the protruding portion of the release paper by hand, so that the work is further facilitated.

According to a third aspect of the present invention, there is provided a sealing material for an electric wire connecting portion according to the first or second aspect, wherein the viscoelastic body is composed of a laminate of a plurality of layers, and the shape retaining material is provided between the layers of the viscoelastic body. It is characterized by being sandwiched.

[0010] In this sealing material, since the shape-retaining material is sandwiched between the viscoelastic bodies, it is possible to effectively prevent the shape from being lost during the molding and handling stages. In addition, since the shape-retaining material functions as a core material, it is also possible to prevent an edge portion of a terminal or the like of the electric wire connection portion from protruding.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a sealing material 1 for an electric wire connection part according to an embodiment.
FIG. 2 is a perspective view showing a state where the electric wire connecting portion 5 is placed on the sealing material 10. The sealing material 10 is obtained by attaching a release paper 15 harder than the viscoelastic body 11 to the entire lower surface of a tape-shaped viscoelastic body 11 made of butyl rubber, silicon rubber, or the like.

The viscoelastic body 11 is provided at the center of one side edge of a rectangular sealing material body 12 which covers the entire connecting portion 5 of the plurality of electric wires 6, 7, 8 at a center of one side edge. It is a T-shaped strip formed with a protruding piece 13. The release paper 15
The tip of the projecting piece 13 and the other side edge of the main body 11 not provided with the projecting piece 13 are formed slightly larger than the viscoelastic body 11. , Projecting outward as projections 15a and 15b.

When the sealing material 10 is formed into the shape shown in FIG. 1, particularly when the projection 13 is formed, the viscoelastic body 1 is formed.
1 is punched out with the release paper 15 adhered thereto. By doing so, the release paper 15 prevents the viscoelastic body 11 from being out of shape, so that the release paper 15 can be molded into an accurate shape.

When the molded sealing material 10 of FIG. 1 is to be wound around the outer periphery of the electric wire connecting portion 5, the electric wire connecting portion 5 is first placed on the upper surface of the sealing material 10 as shown in FIG. At this time, the fork 13 is set with the forked branch portion of the wire connection portion 5 facing the protruding piece 13 side. Then, the user puts his hand on the outside of the release paper 15, inserts the protruding piece 13 into the branch portion of the electric wires 6 and 7, and curls the left and right ends of the sealing material body 12 inward while pressing and bending the electric wire connecting portion 5 above. And put it over it and tightly tighten the whole. At this time, without directly touching the viscoelastic body 11, the outside of the release paper 15
It is possible to work with one hand while grasping 5a, 15b with hand.

After the release paper 15 is tightened from the outside, the release paper 15 is peeled off to obtain the state shown in FIG. In this state, the viscoelastic body 11 remains alone, so that the outer shape becomes very compact. In addition, since the viscoelastic body 11 remains alone, the shape can be adjusted so as not to have a corner so as to be advantageous for later tape winding. Thereafter, as shown in FIG. 4, a tape T is wound around the outside of the viscoelastic body to complete the sealing structure of the electric wire connection portion. In this case, since the tape T is wound directly around the outside of the viscoelastic body, the finished product also has a compact outer shape.

FIG. 5 shows a sealing material 2 according to another embodiment of the present invention.
Indicates 0. In this sealing material 20, the viscoelastic body 21 is composed of a laminate of two layers 21a and 21b,
A shape-retaining material 24 such as a cloth or a non-woven fabric is sandwiched between a and 21b. Other than that is the same as the above embodiment.

In this sealing material 20, the shape retaining material 24 is sandwiched between the viscoelastic bodies 21, so that the viscoelastic bodies 21 can be effectively prevented from being out of shape during the molding and handling stages. Further, since the shape-retaining material 24 functions as a core material, it is possible to prevent the edges of the internal terminals and the like from protruding when being wound around the electric wire connection portion.

[0019]

As described above, according to the first aspect of the present invention, since the release paper is attached to one entire surface of the viscoelastic body, it is possible to mold the seal material into an accurate shape at the molding stage. At the same time, the work can be performed without worrying about the shape collapse due to the adhesion of the viscoelastic body in the handling stage. Also, after the sealing material is wound around the wire connection part, the viscoelastic body alone can be left by peeling off the release paper, so that the wire connection part can be protected in a compact form, and workability can be improved. Improvement can be achieved.

According to the second aspect of the present invention, since a part of the release paper is made larger than the viscoelastic body and projected, the release paper can be easily peeled off after the work is completed. Also, when pressing the end of the viscoelastic body, the work can be performed while grasping the end of the release paper by hand, so that the workability is further improved.

According to the third aspect of the present invention, since the shape-retaining material is sandwiched between the viscoelastic bodies, it is possible to more effectively prevent the collapse of the mold in the molding and handling stages. In addition, since the shape-retaining material functions as a core material, it also helps to prevent the edge of the terminal of the electric wire connection portion from protruding.

[Brief description of the drawings]

FIG. 1 is a perspective view of a sealing material according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where an electric wire connecting portion is placed on a sealing material according to the embodiment of the present invention.

FIG. 3 is a perspective view showing a state where the electric wire connection portion is covered with a sealing material according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a state in which a tape is wound around the outside of the sealing material according to the embodiment of the present invention.

FIG. 5 is a perspective view of a sealing material according to another embodiment of the present invention.

FIG. 6 is a perspective view of a conventional sealing material.

FIG. 7 is a perspective view showing a state where an electric wire connection portion is placed on a conventional sealing material.

FIG. 8 is a perspective view showing a state in which a wire connection portion is covered with a conventional sealing material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 5 Electric wire connection part 6,7,8 Electric wire 10 Seal material for electric wire connection part 11 Viscoelastic body 12 Sealing material main body 13 Protrusion piece 15 Release paper 15a Projection part 15b Projection part 20 Seal material for electric wire connection part 21 Viscoelastic body 21a, 21b Layer of viscoelastic body 24 Shape-retaining material such as cloth and non-woven fabric

Claims (3)

[Claims] 1. A viscoelastic body comprising: a sealing material main body covering an entire connecting portion of a plurality of electric wires; and a projecting piece connected to the sealing material main body and interposed at a branch portion of the electric wire connecting portion. A sealing material for an electric wire connection portion, comprising a release material harder than the viscoelastic body attached to one entire surface of the sealing material for an electric wire connection portion. 2. The sealing material for an electric wire connection part according to claim 1, wherein a part of the release paper is formed larger than the viscoelastic body and protrudes outside. Sealing material. 3. The sealing material for an electric wire connection part according to claim 1, wherein the viscoelastic body is formed of a laminate of a plurality of layers, and a shape retaining material is sandwiched between layers of the viscoelastic body. A sealing material for an electric wire connection portion, characterized in that: