JPH0224082Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a cable movement prevention device installed at the conduit entrance in order to prevent movement of small diameter, lightweight cables such as optical fiber cables installed in the conduit. It's about the ingredients.

(Prior art) As shown in Fig. 4, a conventional cable movement prevention device consists of two semi-cylindrical members each having a fastening flat plate portion extending radially from both ends via a rubber gasket 2 and tightened with bolts and nuts. The gripping hardware 1 is attached to the cable 3, but since such a movement preventing device is installed to cover the opening of the pipe 4, its size must be larger than the diameter of the pipe. Must be.

(Problem that the invention aims to solve) As the conventional cable preventive device is large, it does not pose a problem for large diameter cables since the cable has high rigidity. As shown in the figure, when attached to a small diameter cable such as an optical fiber cable, the cable is bent and the movement prevention device is tilted due to the increased weight and the movement prevention device being larger than the conduit spacing, causing the adjacent cable 3 ′
There was a problem that it could come into contact with and damage it. Further, as mentioned above, the heavy weight of the movement preventive device causes slack in the cable, which may cause damage such as buckling.

In view of the above points, the present invention provides a device for preventing movement of a small diameter cable in which the portion attached to the cable can be made small and lightweight.

(Means for Solving the Problems) The present invention is provided with a rubber packing 5 that is placed over the cable 3, and a flat plate portion 8 extending in the radial direction from both peripheral ends, which are placed over the rubber packing 5 and fastened together between the flat plate portions 8. A gripping fitting 6 consisting of two semi-cylindrical members 7 fastened together by fittings 13 and 14, and a gripping fitting 6 having a diameter larger than the diameter of the conduit 4 in which the cable 3 is installed and press-fittingly engaged with the inner wall of the conduit 4 from one side. Both have three elastic legs 12 protruding from each other, and are combined with a lid 10 having a notch 11 for inserting the cable 3 from the outer periphery.

(Function) When the elastic legs 12 of the lid 10 are inserted into the conduit 4, the disc portion of the lid 10 is kept in contact with the end of the conduit 4. At this time, the notch 11 of the lid 10 is inserted into the cable 3. Rubber gasket 5 on cable 3
The lid body 10 acts as a stopper for the gripping hardware 6 attached through the lid. The diameter of the lid 10 is made slightly larger than the diameter of the conduit 4, but the gripping hardware 6 mounted on the rubber gasket only has to be made large enough so that it does not pass through the notch 11 in the lid 10, so it can be made smaller. It can also be made lightweight.

(Embodiment) Fig. 1 is a partially cutaway side view of an embodiment of the present invention in use, Fig. 2 is a perspective view of the lid, and Fig. 3 is a perspective view in use.
It is a rubber gasket made of a two-split cylinder that is placed over the body, and has a flange-like projection on one end side. Reference numeral 6 denotes a gripping hardware consisting of two semi-cylindrical members 7, each of which has flat plate portions 8 that protrude in the radial direction from both circumferential ends and are provided with insertion holes for bolts serving as fasteners. Then, from one end of this flat plate part 8
It has a protruding fin piece 9 bent at an angle of 45° to 90°.
Both semi-cylindrical members 7, 7 are placed over the rubber packing 5 and tightened with bolts 13 and nuts 14, which are fasteners. Reference numeral 10 denotes a cover body, which has a disc shape with a diameter slightly larger than the diameter of the pipe 4, and has a notch 11 from the outer periphery for inserting the cable 3, and has a tip bent into a mountain shape on one side. There are three bent elastic legs 12 that protrude and are to be brought into pressure contact with the inner wall of the conduit 4. By providing the fin piece 9 bent and protruding from one end of the flat plate part 8 as described above, the gripping hardware 6 can be attached to the lid body 10.
It stably contacts the surface at right angles, does not tilt, and does not touch adjacent cables.

(Effects of the invention) As described above, according to the invention, by using it in combination with the lid, the rubber gasket and the gripping hardware can be made smaller regardless of the pipe diameter, and they can also be made lighter. Even if the cable is a small diameter cable such as an optical fiber cable, it will not cause damage such as buckling, and the gripping hardware will not come into contact with an adjacent cable and cause damage.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of the embodiment of the present invention showing the usage state, Fig. 2 is a perspective view of the lid body, Fig. 3 is a perspective view of the embodiment of the invention showing the usage state, and Fig. 4 FIG. 1 is a perspective view of a conventional cable movement prevention device used for a small diameter cable. 3... Cable, 4... Conduit, 5... Rubber gasket, 6... Gripping hardware, 7... Semi-cylindrical member, 8
... Flat plate part for fastening, 9 ... Fin piece, 10 ... Lid body, 11 ... Cable insertion notch, 12 ... Elastic leg, 13, 14 ... Fastener.

Claims (1)

[Scope of utility model registration request] Two semi-cylindrical members are provided with a rubber gasket to be placed over the cable and a fastening flat plate portion extending in a radial direction from both peripheral ends, and which are placed over the rubber gasket and fastened to each other by a fastener between the fastening flat plate portions. a gripping hardware having a diameter larger than that of the conduit in which the cable is laid, at least three elastic legs protruding from one side to be press-fitted and engaged with the inner wall of the conduit, and a notch for inserting the cable formed from the outer periphery; A small-diameter cable movement prevention device consisting of a disc-shaped lid body.