SU1107086A1 - Universal device for securing light-guide cable - Google Patents

Abstract

A UNIVERSAL DEVICE FOR FASTENING THE LIGHTWATER CABLE, containing a base with an-shaped groove, a clamping bar, elastic elements, characterized in that, in order to increase the reliability of fixing and expanding the range of diameters of the cables to be fixed, the clamping bar is additionally equipped with piezo-ceramic fixing bores with spacers. connected to the voltage source, grooves are made perpendicular to the V-shaped groove in the base, and the protrusions corresponding to them are in the clamping plate. dL L 00 O)

Description

The invention relates to fixation devices for optical fiber cables of optical communication systems.

A known connector for fiber cables of different diameters, comprising a housing with a system of transverse slits converging into one central opening, and spring elements Cl3. The connector does not provide an exact fixation due to the different elasticity of the springs.

A universal device is known for fastening a light guide cable, comprising a base with a V-shaped groove on a supporting surface, and an elastic element placed between the base and the pressing C2,

A disadvantage of the known device is that the diameter of the cable to be fixed can vary to very small limits, determined by the depth of the V-shaped notch.

In addition, during mechanical actions on the cable due to the deformation of the elastic element, the light-guide cable is uncoupled.

The purpose of the invention is to expand the range of diameters of fixed cables and increase the reliability of fixation.

The goal is achieved by the fact that in a universal device for fixing a light-guide cable containing a base with a V-shaped groove, elastic elements, a pressure bar, are additionally equipped with piezoceramic fixing struts with a clamping force regulator connected to a voltage source at the base perpendicular to V grooves are grooved, and in the clamping plate corresponding protrusions.

Figure 1 shows the structure of the device proposed; in Fig.2, section A-A in Fig.1; on fig.Z side view; figure 4 - section bb in figure 2.

The device comprises a base 1 with a V-shaped groove 2, the slots 3 and 4 are perpendicularly last, the depth of which is determined by the minimum diameter of the cable being fixed, and the projections 5 and 6 correspond to them. The clamping bar 7 and the base are two elastic elements 8 s adjustable screws 9 effort. Two piezoceramic fixing struts 11 are movably mounted in the slot 10 of the clamping plate. They are pressed against the walls 12 of the base by a screw 13 through an elastic gasket 14. Four guides 15 are made in the clamping strip. At the base and the clamping plate there is a conical cutout 16 for pre-orientation of the cable end. Piezoceramic locking struts are connected to a pulsed source of electrical voltage through holes 17

The device works as follows.

In the initial state, the clamping bar 7 is in the lower position and fixed by the force of the static friction of the piezoceramic clamps against the walls 12 created by the screw 13 through the elastic gasket 14. Before the fixing begins, the voltage from the source is applied to the piezoceramic clamps, while the piezoceramically vibrators are energized the frequency of parallel resonance, resulting in static friction

between them and the walls 12 goes n kinetic friction, while the coefficient of friction in the friction pairs is sharply reduced. The end of the light guide cable is supplied from the side of the cone-shaped notch 16. Starting to raise the clamping bar 7 and stretching the elastic elements 8, it will go through the protrusion 5 and will move further along the V-shaped groove 2 as if guided. After passing the protrusions, the insertion of the cable end into the device is completed by means of the mechanical stop of its flange in the base 1, the cable is set to the working position. After this, the voltage is removed from the piezoceramic clamps, the kinetic friction between them and the walls 12 again becomes a large static one. The end of the light guide cable is fixed in the V-shaped groove due to the clamping on top of the projections 5 and 6 with an effort equal to the sum of the tensile force of the elastic elements. Thus, the cable is rigidly fixed. To release the light guide cable to the piezoceramic clamps, a voltage is applied, a significant magnitude of the static friction force transforms into a small kinetic friction force, the light guiding cable is removed along the V-groove from the device. The bar is lowered under the influence of elastic elements and takes its starting position as before fastening.

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The proposed universal device for fixing the light-guide cable in comparison with the known one has broader functionality; it is possible reliably

and quickly fix the light-guide cables of different diameters, from the smallest (2-15 mm) to the larger, with adjustable clamping gain. The use of piezoceramically controlled electric tension clamps ensures precise orientation of the cable end face relative to the light beam, its reliable, more than 1.8 times, mechanical fastening under the conditions of mechanical effects.

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Claims (2)

A UNIVERSAL DEVICE FOR FIXING A LIGHT-FIXED CABLE, containing a base with a U-shaped groove, a clamping strip, elastic elements, characterized in that, in order to increase the reliability of fastening and expanding the diameter range of the cables to be fixed, the clamping strip is additionally equipped with piezoceramic locking struts with a fixing force regulator, connected to the source 2. Application of Germany No. 2902089, class B 02 B 5/14, published. 1979 (prototype). voltage, in the base perpendicular to the V-shaped groove, grooves are made, and in the clamping bar - the protrusions corresponding to them.