KR20160041214A

KR20160041214A - Waterproof cable grand

Info

Publication number: KR20160041214A
Application number: KR1020140134750A
Authority: KR
Inventors: 이훈
Original assignee: 이훈
Priority date: 2014-10-07
Filing date: 2014-10-07
Publication date: 2016-04-18

Abstract

The present invention relates to a waterproof cable gland for coupling between a cable for supplying power to a tunnel or the like and an installation to which the cable is inserted, the cable gland comprising: a cylindrical socket having a cable inserted in an axial direction; An elastic sealing member having a cylindrical portion inserted into the socket to receive the cable inwardly and a recessed portion having a concave outer circumferential surface along the circumferential direction in an intermediate region of the cylindrical portion in the axial direction; And the cable is inserted through the elastic sealing member in the axial direction and is screwed to the socket to compress the elastic sealing member in the axial direction so that the groove is elastically deformed in the axial direction, So that the plug can be brought into close contact with the plug. Thereby, the shape and fastening structure can be simplified compared to the prior art, and the efficiency of manufacturing and assembling aspects can be improved.

Description

Waterproof Cable Grand {WATERPROOF CABLE GRAND}

The present invention relates to a waterproof cable gland that mediates fastening between a cable for supplying power to a tunnel or the like and an installation to which the cable is led.

1, a waterproofing member 12 of a synthetic resin material is inserted into and protruded from one side of a socket 11 through which a cable is inserted, and a cable (not shown) And the through-hole cap 13 is screwed to the socket 11 to achieve a sealing function for the cable.

That is, the waterproofing member 12 is formed with a plurality of waterproof fins 12a surrounding the cable, and when the outer circumferential surface is pressed by the fastening of the penetrating cap 13, the waterproof member 12 is in close contact with the cable housed inside, It is possible to block the inflow into the socket 11.

The left end of the socket 11 is inserted and fastened into a fastening hole (not shown) formed on the panel on the installation side using the nut 14 and the O-ring 15. [

However, such conventional waterproof cable glands 10 have a problem that the waterproofing member 12 is complicated in shape and fastening structure, resulting in inefficiency in terms of manufacturing and assembling.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a waterproof cable gland in which the shape and fastening structure is simple compared to the prior art, thereby improving the efficiency in manufacturing and assembling aspects.

According to an aspect of the present invention, there is provided a waterproof cable gland comprising: a cylindrical socket having a cable inserted in an axial direction; An elastic sealing member having a cylindrical portion inserted into the socket to receive the cable inwardly and a recessed portion having a concave outer circumferential surface along the circumferential direction in an intermediate region of the cylindrical portion in the axial direction; And the cable is inserted through the elastic sealing member in the axial direction and is screwed to the socket to compress the elastic sealing member in the axial direction so that the groove is elastically deformed in the axial direction, And a plug for allowing the waterproof cable gland to come into close contact with the waterproof cable gland.

The waterproof cable gland may further include a washer interposed between the socket and the elastic sealing member and between the plug and the elastic sealing member.

The elastic sealing member may be formed such that the protrusion protrudes in the circumferential direction on the inner circumferential surface of the recessed portion.

As described above, according to the waterproof cable gland according to the present invention, the shape of the elastic sealing member and the fastening structure with the socket or the like can be greatly simplified compared to the conventional waterproof member, thereby improving the efficiency in manufacturing and assembly thereof.

1 is a side view of a waterproof cable gland according to the prior art,
FIG. 2 is a side view showing an exploded view of a waterproof cable gland according to an embodiment of the present invention, FIG.
Fig. 3 is a side view showing a combined state of the waterproof cable gland of Fig. 2,
Fig. 4 is a cross-sectional view showing a modification of the elastic sealing member, which is one component of the waterproof cable gland of Fig. 2;

As shown in Fig. 2, the waterproof cable gland 20 according to the embodiment of the present invention includes a cylindrical socket 21, an elastic sealing member 22 inserted therein, and an elastic sealing member 22 at both side ends thereof And a plug 25 which is axially fastened to the socket 21 with the elastic sealing member 22 and the washers 23 and 24 interposed therebetween.

The socket 21 is inserted through the cable 1 in the left and right axial directions, and a screw groove 21a is formed in one inner circumferential surface of the socket 21, through which the plug 25 is inserted.

The elastic sealing member 22 has a recessed portion 22b recessed and formed along the circumferential direction in an intermediate region of the cylindrical portion 22a extending in the left and right axial direction. In the present embodiment, the recessed portion 22b is formed of a curved surface, but the present invention is not limited to this shape, and may be a straight line having a step with the cylindrical portion 22a, that is, a cylindrical shape.

In the present embodiment, the inner circumferential surface of the cylindrical portion 22a coincides with the inner circumferential surface of the recessed portion 22b. However, the present invention is not limited to this shape, and the inner circumferential surface of the recessed portion 22b may protrude further inward Lt; / RTI >

The material of the elastic sealing member 22 is preferably a rubber material such as nitrile butadiene rubber.

The washer 23 and 24 are interposed between the socket 21 and the elastic sealing member 22 and between the plug 25 and the elastic sealing member 22 so that when the socket 21 and the plug 25 are fastened, So that the deformation of the recessed portion 22b can be made uniform toward the inner cable 1. [0050] As shown in Fig.

The plug 25 has an elastic sealing member 22 interposed between the plug 21 and the socket 21 as a thread 25a protruded in one axial direction is engaged with the thread groove 21a in the socket 21, And the washer 23, 24 in the axial direction. Fig. 3 shows a state in which the fastening of the plug 25 and the socket 21 is completed.

Accordingly, the elastic sealing member 22 (see Fig. 2) compressed in the axial direction in the socket 21 is elastically deformed in the direction of the inner shaft center by the intermediate recessed portion 22b and is brought into close contact with the outer peripheral surface of the inner cable 1 Thereby achieving sealing with the outside. 3, the side of the plug 25 on the left side with respect to the socket 21 is the outside and the side through which the thread 21b protruding to the right side of the socket 21 penetrates through, The opposite side of the inside becomes the inside. The plug 25 and the socket 21 are mounted on the outer surface of the panel in a protruding manner and the cable 1 is connected to the inside of the panel through the plug 25 And is sealed by the elastic sealing member 22 compressively deformed in the socket 21 in this process.

4 is a modification of the above-described elastic sealing member. At this time, the recessed portion 32b is formed linearly, that is, cylindrical, like the cylindrical portion 31a on the outer side.

The protrusion 32c protrudes in the circumferential direction on the inner circumferential surface of the recessed portion 32b so that the elastic sealing member 32 is brought into contact with the inner cable before the inner circumferential surface 32d when the elastic sealing member 32 is compressed from the right and left axial directions .

According to the protrusion forming structure of the protrusion 32c, considering the manufacturing tolerance, that is, the difference in precision, since the diameter of the cable 1 is not constant, the accuracy of the cable in the elastic sealing member 32 is considered A sufficient sealing function can be achieved.

Meanwhile, since the waterproof cable gland described above is only one embodiment for facilitating understanding of the present invention, it is difficult to understand that the scope of the invention and the scope of the invention are limited to those described above.

The scope of the present invention is defined by the appended claims and their equivalents.

20: Waterproof cable gland 21: Socket
22: elastic sealing member 22a: cylindrical portion
22b: recessed groove 23, 24: washer
25: plug 32c: projection

Claims

In waterproof cable glands,
A cylindrical socket through which a cable is inserted in an axial direction;
An elastic sealing member having a cylindrical portion inserted into the socket to receive the cable inwardly and a recessed portion having a concave outer circumferential surface along the circumferential direction in an intermediate region of the cylindrical portion in the axial direction; And
The cable is inserted through the elastic sealing member in the axial direction and is screwed to the socket so that the elastic sealing member is compressed in the axial direction so that the groove is elastically deformed in the axial direction, And a plug for allowing the plug to come into close contact with the plug.

The method according to claim 1,
Further comprising a washer interposed between the socket and the elastic sealing member and between the plug and the elastic sealing member, respectively.

The method according to claim 1,
Wherein the elastic sealing member has protrusions protruding in the circumferential direction on the inner circumferential surface of the recessed portion.