MXPA97008950A - Sujec device - Google Patents

Abstract

The invention relates to a fastening device, in particular a cable holding device, for the telecommunications and data technology. The object of the invention to develop a fastening device of the type indicated at the beginning, in which a fastening of objects with different diameters is ensured in a simple and reliable manner and without the risk of unacceptably high crushing of the object, is achieved by means of the insertion into a sleeve (2) with recesses (4) of a basic body (6) and at least one holding arm (5), in which clamping body (1) is introduced the object (3) to be fixedly fixed in whose recesses (4) fits at least one of the clamping arms (5) of the clamping body (1), and by rotating the sleeve (2) with respect to the stationary basic body (6) that causes at least one of the clamping arms (5) reduce the internal clamping diameter (D) of the clamping body (

Description

CLOSURE DEVICE The invention relates to a fastening device, in particular a cable fastening device for the communication and data technology according to the preamble of claim 1. Known fastening devices such as necklaces of tubes or collars of cables allow the clamping of pipes, hoses or cables respectively only for a small range of diameters. Only narrow diameters can be handled with a clamping device. The fastened objects ^ are not protected against crushing, the amount of crushing by the performer being determined and not being limited by the clamping device. In DE 43 34 615 Cl an electrical connector is described, to which a shield contact can be attached, to create a continuous shielding of the cable to the connector. The cable screen is conductively connected here with the screen contact through a crush connection. The crush connection is carried out by means of a crush ring or a cable tie. Here, too, only insufficient adaptation to different cable diameters can be achieved. The object of the invention is to develop a clamping device of the type indicated at the beginning, with which a fastening of objects with different diameters is ensured in a simple and reliable manner and without the risk of unacceptably high crushing of the object. The solution to this task results from the characterizing properties of claim 1. The clamping body formed according to the invention ensures in connection with the sleeve made according to the invention the protection against tightness and / or continuity over the entire surface (360 °) of the shielding of cables with different diameters or in general the fixed clamping of objects of different diameters with a single clamping device. The size of the clamping arms according to the purpose of application causes a defined force to be exerted on the object or on a cable, which can not be exceeded, so that there is no risk of unacceptably high crushing of the object. - ~ • Variations in the diameter of the clamping body of the clamping device are possible to a large extent by a simple rotation of the sleeve. The clamping device produces a joint that can be undone, and is reusable. Other advantageous structures of the invention result from the dependent claims. The invention is explained in more detail below with the aid of exemplary embodiments, represented in the drawings, of a cable holding device. They show: FIG. 1 an exploded representation of the clamping device with a circular embodiment of the clamping body, FIG. 2 a perspective representation of a clamping body formed rectangularly, FIG. 3 a perspective representation of the clamping sleeve, FIG. 4 the sectional representation of the clamping device with a rectangular clamping body inserted in the sleeve, figure 5 the sectional representation of the clamping device according to figure 4 with slightly tensioned clamping arms and figure 6 a sectional representation of the clamping device. clamping device according to figure 4 with very tight clamping arms for thin cable webs. The fastening device can be used, in addition to its general application, advantageously in particular in the telecommunications and data technology as a cable holding device for shielded cables. In connection, for example, with RJ 45 bushes, the clamping device according to the invention ensures reliable strain protection and a continuity of 360 °, over the entire surface, of the shielding of the cable towards the bushing. Figure 1 shows a cable holding device that is essentially formed by a circular clamping body 1, formed by a basic body 6 with clamping arms 5, and by a sleeve 2 with recesses 4 made in wedge from the inside out. The connection of the clamping device with an RJ 45 bushing (not shown) can take place via a connection plate 9, which is connected to the clamping body 1 and to a support and reinforcement sleeve 10. The shielding is connected electrically conductive with the electrically conductive clamping body 1 and this is connected through the connection plate 9 with the shield, for example, of the RJ 45 bushing, so that a closed screening is secured from the cable to the bushing. The support and reinforcement sleeve 10 is introduced from above through the connection plate 9 in such a way that two tongues 12 of the support and reinforcement sleeve 10 fit into two recesses 13 of the connection plate 9 and are secured through it against turns. The support and reinforcement sleeve 10 with the connection plate 9 fixed thereto is inserted into the clamping body 1 and is connected to it by connecting pieces 14, which are bent outwards, so that the connection plate 9 is fixedly fastened to the clamping body 1. The connection thus formed between the support and reinforcement sleeve 10, the connection plate 9 and the clamping body 1 is inserted in the sleeve 2. The clamping body 1 is thereby fixed with respect to the sleeve 2. A cable, not shown in FIG. 1, is inserted with the shield in the clamping body 1 and is held there firmly, by turning the sleeve 2 in the direction of the arrow 15 counterclockwise, by the clamping arms 5 of the clamping body 1, which fit into the recesses 4 of the sleeve 2. The basic body 6 of the clamping body 1 is fixed with respect to the sleeve 2, as described above, and its position does not vary due to the rotation of the sleeve 2, that is to say, the basic body 6 does not rotate. The diameter variation and thus the clamping effect on the cable results from the decrease in diameter between the retaining arms 5 (figures 4 to 9). With a single embodiment, diameter variations of for example 10 mm to 3 mm can be obtained. In Figure 2, the fastening body 1 is shown in a rectangular embodiment. The basic body 6 is formed by movable arms 11, which are joined together (in one piece or also for example by hinges such as film hinges). From the basic body 6, for example, four clamping arms 5 are formed in four different planes, for example by free cuts. From one of the arms 11, bending it outwards, a ratchet 7 is formed, which after the positioning of the clamping body 1 in the sleeve 2 according to the figure 3 engages in a toothing 8, located internally of the sleeve 2 and when rotating the sleeve causes an additional retention of the clamping body 1 in a desired position in the sleeve 2. Figure 3 shows otherwise the four recesses in wedge 4, in which the four clamping arms 5 of the clamping body 1 fit (Figure 2). In Figure 4, the clamping device is shown in the assembled state. The clamping body 1 is inserted in the sleeve 2 and the clamping arms 5 are essentially without tension in the recesses 4. A flattening 16, visible in the upper edge of the sleeve 2 (FIGS. 3 to 6) serves for the orientation to the position of the sleeve 2. In Figure 5, the clamping device is shown with an inserted wire 3 of the maximum possible diameter. To tension or hold the cable 3, the sleeve 2 is rotated to the maximum extent allowed by the diameter of the cable. With this, the clamping arms 5 of the clamping body 1 are taut and exert a corresponding pressure on the lateral surfaces of the recesses 4 in the sleeve 2. Figure 6 shows the clamping device with an inserted cable 3, which has a small diameter. For tensioning the cable 3, the sleeve 2 is rotated until the clamping arms 5 of the clamping body 1 still just have a support in the recesses 4 of the sleeve 2. The basic body 6, which serves as a frame, of the clamping body 1 is clearly invariant, while the clamping arms 5 are joined by the rotation of the sleeve 2 and produce the clamping of the cable 3. The point of attachment of the respective clamping arms 5 with the basic body 6 forms here the respective center of rotation for the mutual approaching rotation of the clamping arms 5 in the direction of the arrow 15 counterclockwise to obtain a new clamping diameter D.

The clamping device can be made of a suitable synthetic material, the metalized clamping body 1 or of an electrically conductive material being manufactured when the clamping device is provided as a cable clamping device also for continuing the shielding of the cable. The sleeve 2 can be externally provided with gripping cavities.

Claims (7)

1. CLAIMS 1. A clamping device, in particular a cable clamping device for the communication and data technology, characterized in that a clamping body (1), formed by a basic body (6) and at least one arm of clamping (5), in which body the object (3) to be fixedly fixed is inserted, it is inserted in a sleeve (2) with recesses (4) in which at least one of the clamping arms (5) of the body fits. (1), and because by rotating the sleeve (2) with respect to the fixed basic leather (6) at least one of the clamping arms (5) reduces the internal clamping diameter (D) of the clamping body (1) . A clamping device according to claim 1, characterized in that the clamping arms (5) exit the clamping body (1) in different planes. 3. A clamping device according to claims 1 and 2, characterized in that the clamping body (1) is a one-piece stamped element with clamping arms (5) cut freely. 4. A clamping device according to claims 1 to 3, characterized in that the "clamping body (1) forms a shielded electrically conductive contact 5. A clamping device according to claim 1, characterized in that the clamping body (1) it has a ratchet (7), which engages in a toothing (8), located inside, of the sleeve (2) 6. A fastening device according to claim 1, characterized in that a support and reinforcement sleeve (10) is inserted in the basic body (6) of the holding body (1). A device according to claim 1, characterized in that the basic body (6) of the holding body (1) has a circular or multi-angular shape. LIST OF REFERENCE SYMBOLS 1 Clamping body 2 Sleeve 3 Object (cable) 4 Recess 5 Clamping arm 6 Basic body 7 Ratchet 8 Teeth 9 Connection plate 0 Support and reinforcement sleeve 1 Movable arm 2 Tab 3 Recess 4 Connection piece 5 Directional arrow 6 Flattening D Diameter