JPH09140031A - Sealing member for cable inserting hole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the sealing reliability and the efficiency of sealing work of a cable inserting hole by sealing a cable inserting hole with a pair of sealing member dividing bodies made in one united body which comprises an elastic member as a whole and is made in one united body by polymerizing flanges together. SOLUTION: A cable inserting hole sealing member 10 is constituted by turning two split sealing members 15 into one united body by mutually polymerizing corresponding flanges 14 through the formation of elastic members such as rubber. This cable inserting hole sealing member 10 is attached to a cable 11 by fitting a cable holding hole 22 formed to each split sealing member 15 in response to the diameter of the cable 11 in advance, to the cable 11 by utilizing a slit formed to a bottom plate 13 of one of the split sealing members. Next, by pushing the cable inserting hole sealing member 10 into a cable inserting hole 12 while maintaining a fitting state with the cable 11, an adhesive layer 23 on the outer peripheral surface of the flange 14 can be tightly adhered to the inner surface of the cable inserting hole 12 and the cable inserting hole 12 can be sealed in a watertight manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable insertion hole sealing member for sealing a cable insertion hole through which a cable is inserted.

[0002]

2. Description of the Related Art As means for sealing a cable insertion hole formed in a wall body or a tube body as the cable insertion hole in a watertight or airtight manner, conventionally, (1) a sealing tape is laminated on the outer peripheral surface of the cable. Filling the clearance between the inner surface of the cable insertion hole and the outer peripheral surface of the cable, (2) attaching a ring-shaped elastic body adapter having an inner insertion hole into which the cable is inserted, to the outer peripheral surface of the cable, (3) foam rubber or In general, a ring-shaped laminated adapter formed by concentrically laminating a band-shaped body made of foamed plastic or the like is attached to the outer peripheral surface of the cable (see FIG. 8).

[0003]

By the way, in the above-mentioned sealing structure, (1) has a problem that the working efficiency is low due to the enormous number of laminated sealing tapes, and it is difficult to obtain sufficient water tightness. there were. In (2), it is necessary to prepare in advance a large number of types of elastic body adapters having internal holes corresponding to the cable diameter and to select one of these elastic body adapters that fits the cable diameter. However, there is a problem in that the elastic adapter is wasted and the cost is increased. Further, in many cases, it is necessary to laminate a sealing tape on the outer peripheral surface of the cable to adapt the cable diameter to the inner insertion hole, which is unsatisfactory in work efficiency.

As for (3), as shown in FIGS. 7 and 8, a slit 4 for inserting the cable 3 is inserted into an insertion hole 2 formed in the central portion of the laminated adapter 1 by post-processing. The strip-shaped body 6 constituting the laminated adapter 1 is appropriately cut according to the inner surface shape of the cable insertion hole 5 and the outer surface shape of the cable 3 by communicating the inside and outside of the hole 2, but the workability is poor, and as a result, the sealing is performed. There was a problem that the reliability of the. Further, foamed rubber and foamed plastic have a problem in durability, and in view of watertightness and airtightness, there is also a problem in that long-term reliability is lacking. In view of the above problems, it is conceivable to form the laminated adapter 1 by using, for example, EPT (ethylene-propylene rubber) or a thermoplastic elastomer as an elastic body having excellent durability. Since the thickness of the belt-shaped body 6 cannot be reduced due to the problem of the moldability (generally molded by a mold), there is a case where it cannot be processed to obtain sufficient watertightness and airtightness, and the problem cannot be solved.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a cable insertion hole sealing member which improves the work efficiency of sealing the cable insertion hole and the reliability of the sealing. It is a thing.

[0006]

The present invention has the following features to attain the object mentioned above. That is, in the cable insertion hole sealing member according to claim 1, a plurality of concentric projections are concentrically formed on one surface of the bottom plate which is made of an elastic material as a whole and is formed in a shape substantially matching the cross section of the cable insertion hole. The above-mentioned problem is solved by comprising a pair of sealing member divided bodies that are integrated by overlapping flanges that define a region on a surface in multiple layers and that can seal the cable insertion hole. The means.

The cable insertion hole sealing member according to claim 2 is the cable insertion hole sealing member according to claim 1,
The bottom plate of each sealing member divided body forming a pair is concentrically removed with the flange to form a cable holding hole substantially coaxial with the cable, which is a means for solving the above problems.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of a cable insertion hole sealing member of the present invention will be described below with reference to FIGS. Reference numeral 10 in the figure is a cable insertion hole sealing member of the present embodiment. As shown in FIG. 1, the cable insertion hole sealing member 10 of the present embodiment has a circular cross section of the cable 1.
It is applied when the cable insertion hole 12 having a circular cross section through which 1 is inserted is watertightly sealed. As shown in FIG. 1 to FIG. 4, the cable insertion hole sealing member 10 has a cable insertion hole 1
A disc-shaped bottom plate 1 formed in a shape substantially corresponding to the cross section of 2
A plurality of concentric flanges 14 projecting concentrically on one side of the surface 3 and superimposing flanges 14 defining a multi-layered area on the surface are integrated to seal the cable insertion hole 12. The sealing member divided body 15 is provided.

A slit 18 extending from the outer peripheral surface 16 in the radial direction to reach the central portion 17 is formed in the bottom plate 13 of one sealing member divided body 15 forming a pair. FIG.
As shown in FIG. 2, the flange 14 projecting from the region 19 on one side of the bottom plate 13 divided by the diameter corresponding to the slit 18 has the same width dimension and has the central portions 17 at regular intervals equal to the width. They are arranged concentrically around the center. Flange 1 projecting from region 20 on the other side of bottom plate 13
4 are arranged in concentric circles that coincide with the gaps between the flanges 14 in the region 19 on one side. A cable holding hole 22 into which the cable 11 is inserted is opened in the bottom plate 13 located in the central portion 17. The cable holding hole 22
The cable 11 is communicated with the slit 18, and the cable 11 is inserted through the slit 18 inside. The inner surface of the innermost flange 14 that faces the cable holding hole 22 in the region 20 on the other side is flush with the outer surface of the cable holding hole 22.

A contact flange 21 is formed on the end face of the other side region 20 facing the slit 18 for ensuring the hermeticity when the slit 18 is closed. Abutment flange 21
Is continuous with the innermost flange 14 of the region 19 on one side. Like the flange 14, the contact flange 21 is integrally formed with the bottom plate 13. A soft layer 21 a is formed on the surface of the contact flange 21 facing the slit 18. The soft layer 21a is made of soft rubber or the like and is formed to have a hardness of 10 degrees or less as measured by a hardness meter specified by JIS standard A. The soft layer 21a can also be formed on the end face of the region 19 on one side facing the slit 18. Area 1 on one side
9, the outermost surface of the outermost flange 14 has a soft layer 21a.
An adhesive layer 23 made of the same material as is formed.

The other sealing member divided body 15 has the same structure as the one sealing member divided body 15. Therefore, the sealing member divided bodies 15 forming a pair have the center portions 17 of the sealing member divided bodies 15 aligned with each other, and the other sealing member is provided in the gap portion between the flanges 14 of the one sealing member divided body 15. By inserting the flange 14 of the divided body 15 (see FIGS. 1 and 2), the cable insertion hole sealing member 10 integrated in a disk shape as viewed from the outside is configured.

The bottom plate 13 and the flange 14 are integrally molded products in which the hardness measured by a hardness meter specified in JIS Standard A is about 55 degrees by molding rubber or thermoplastic elastomer. is there.

The operation and effect of this embodiment will be described below. In the cable insertion hole sealing member 10, first, the sealing member divided bodies 15 forming a pair are integrated with each other, and the cable holding holes are formed in advance in the respective sealing member divided bodies 15 corresponding to the diameter of the cable 11. The hole 22 is fitted to the cable 11 by using the slit 18 to be attached to the cable 11. Next, the cable insertion hole sealing member 10 is maintained in the fitted state with the cable 11, and the cable insertion hole 12 is inserted.
The adhesive layer 23 is pushed into the cable insertion hole 1
It is closely attached to the inner surface of the container 2 and is watertightly sealed.

At this time, in particular, the deformation of the adhesive layer 23 causes the cable insertion hole sealing member 10 to be integrally fitted in the cable insertion hole 12. Further, since the slit 18 is closed, the cable insertion hole sealing member 10 stably supports the cable 11 at a fixed position in the cable insertion hole 12 in the cross-sectional direction. When the slit 18 is closed, the soft layers 21a of the combined sealing member divided bodies 15 and the adhesive layers 23 are continuous, and the cable insertion hole sealing member 10 and the cable 11 are connected.
Between the cable insertion hole sealing member 10 and the cable insertion hole 12 are completely sealed. Area 2 on the other side
The innermost peripheral flange 14 of 0 and the outermost peripheral flange 14 of the region 19 on one side can be replaced with a flange entirely made of the soft layer 21a and the adhesive layer 23. In this case, the bottom plate 13 and the flange 14 can be made of a slightly hard material.

By the way, the molding accuracy of the rubber or thermoplastic elastomer mold is limited, but the cable insertion hole sealing member 10 of the present invention has the cable insertion hole sealing member 1
Since it suffices to ensure the molding accuracy of each sealing member divided body 15 that configures 0, the accuracy requirement is relaxed and the manufacturing is easy.

Further, since the inner diameter of the cable holding hole 22 is the inner diameter of the cable holding hole 22 formed in the bottom plate 13 of any one of the sealing member divided bodies 15 constituting the cable insertion hole sealing member 10, it is highly accurate. Can be adjusted. That is, in the sealing member divided body 15, the region 19 on one side,
The inner diameter of the cable holding hole 22 can be adjusted in units of layers of both flanges 14 in the region 20 on the other side, and by combining the sealing member divided bodies 15 formed in the same shape, the target cable holding hole can be obtained. 22 can be configured.

Therefore, the cable insertion hole sealing member 10 of the present embodiment has a structure in which the two sealing member divided bodies 15 are integrated by superposing the flanges 14 of each other.
Since the molding with the elastic material such as rubber or thermoplastic elastomer is facilitated, the accuracy of forming the cable holding hole 22 is improved, and the watertightness of the cable insertion hole 12 can be stably maintained for a long time. Further, in order to manufacture the cable insertion hole sealing member 10, it is sufficient to manufacture the sealing member divided bodies 15 having the same shape, so that the manufacturing efficiency is improved.

A second embodiment of the present invention will be described below with reference to FIGS. 5 and 6. 1 to 4 in the figure.
The same components as those described above are denoted by the same reference numerals, and description thereof will be simplified. Reference numeral 51 in the figure denotes a sealing member divided body which constitutes the cable insertion hole sealing member of the present embodiment. As shown in FIGS. 5 and 6, the sealing member divided body 51 is similar to the sealing member divided body 15 of the first embodiment except that the abutting flange 21 is omitted and all the flanges 14 have a flexible inner surface. Layer 5
2 is formed, and a cable insertion hole sealing member is configured by combining them in pairs. The bottom plate 13 is formed so that an operator can cut it with a tool such as scissors. Flange 14 arranged concentrically
A flange 53, which is entirely made of an adhesive material, is provided at the outermost position of the above so as to project.

In the cable insertion hole sealing member of this embodiment, an operator cuts the bottom plate 13 concentrically from the central portion 17 and deletes it at the site, so that a desired size is obtained at the formation pitch of the flange 14. A cable holding hole can be formed. When the sealing member divided bodies 51 having completed the formation of the cable holding holes are combined, the innermost flanges 14 are continuous, and the soft layers 52 of these flanges 14 are also continuous, so that the inserted cables 11 are A cable holding hole that can be brought into close contact with the outer surface is obtained.

Therefore, according to the cable insertion hole sealing member of the present embodiment, the size of the cable holding hole can be appropriately adjusted corresponding to the cable 11, so that the versatility is improved and a plurality of types can be obtained. Since it is not necessary to prepare the sealing member divided body 51 for the cable holding hole in the field, waste can be reduced and cost can be reduced.

The cable insertion hole sealing member of the present invention can be applied to a cable insertion hole having a section other than a circular section and a cable having a section other than a circular section. The formation pitch of the flanges in the respective sealing member divided bodies that form the same cable insertion hole sealing member may not be constant. Also, if the flanges can be integrated by superimposing the flanges, it is not necessary to make the respective sealing member divided bodies constituting the same cable insertion hole sealing member into the same shape, and the flanges of the flanges can be integrated at the time of integration. A gap may be formed between them. In this case, the gap formed between the flanges increases the amount of deformation of the cable insertion hole sealing member, and thus improves the adhesion between the cable insertion hole and the cable and the cable insertion hole sealing member, The watertightness and airtightness of the stop portion can be improved.

[0022]

As described above, according to the cable insertion hole sealing member of the first aspect, one of the bottom plates is made of an elastic material as a whole and is formed in a shape substantially matching the cross section of the cable insertion hole. A pair of divided sealing members that are concentrically projecting from the side surface and are integrated by overlapping flanges that define a multi-layered area on the surface and are capable of sealing the cable insertion hole. As a result, even if an elastic material with poor moldability is used, molding that corresponds to the cable insertion hole and cable diameter can be achieved, and high water-tightness and airtightness can be obtained, as well as high durability. By using a material, watertightness and airtightness can be stably maintained for a long period of time.

According to the cable insertion hole sealing member of the second aspect, in the cable insertion hole sealing member of the first aspect, the bottom plates of the respective sealing member divided bodies forming a pair are concentrically removed with the flange. Since a cable holding hole that is approximately coaxial with the cable is formed, it is possible to form a cable holding hole that matches the cable diameter even if an elastic material with poor moldability is used. By using, the watertightness of the cable insertion hole can be stably maintained for a long period of time.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a first embodiment of a cable insertion hole sealing member of the present invention.

FIG. 2 is an exploded perspective view showing a first embodiment of a cable insertion hole sealing member of the present invention.

FIG. 3 is a view showing a first embodiment of a cable insertion hole sealing member of the present invention, and is a plan view showing a sealing member divided body.

4 is a cross-sectional view taken along the line AA in FIG.

FIG. 5 is a view showing a second embodiment of the cable insertion hole sealing member of the present invention and is a plan view showing a sealing member divided body.

6 is a cross-sectional view taken along the line BB in FIG.

FIG. 7 is an exploded perspective view showing a sealing means for a cable insertion hole.

FIG. 8 is a perspective view showing a conventional example.

[Explanation of symbols]

10 ... Cable insertion hole sealing member, 11 ... Cable, 12
… Cable insertion hole, 13… Bottom plate, 14… Flange, 15
... Sealing member divided body, 51 ... Sealing member divided body.

Claims (2)

[Claims] 1. A cable insertion hole sealing member (1) for sealing a cable insertion hole (12) through which a cable (11) is inserted.
0), which is made of an elastic material as a whole and is provided with a plurality of concentric protrusions on one surface of the bottom plate (13) formed in a shape substantially matching the cross section of the cable insertion hole. The flanges (14) defining the multilayer are integrated by polymerizing each other,
A cable insertion hole sealing member, comprising a pair of sealing member divided bodies (15) capable of sealing the cable insertion hole. 2. The cable insertion hole sealing member according to claim 1, wherein the bottom plate of each sealing member divided body (51) forming a pair is concentrically removed with the flange to hold the cable substantially coaxial with the cable. A cable insertion hole sealing member having a hole formed therein.