MXPA98000451A - Tool for the preparation of alamb - Google Patents

Abstract

A tool for the preparation of wire is described, comprising a flat base element with two adjacent projections extending upward at one end of the base, a path for the wire, defined between the projections and a plurality of slits for the wire arranged below the path for the wire

Description

TOOL FOR «PREPARING WIRES TECHNICAL WORK The present invention consists of a tool for the preparation of wires and more particularly with a portable tool, not expensive, easy to use, which improves the capacity of the tool operator to position and properly fix the wires of the pair of braided wires of category 5 cable for presentation, placement and crimping or joining in a corresponding connector, in such a way that the braids in the wires are as close as possible to the connector.

BACKGROUND OF THE INVENTION In the telecommunications and electronics industry, equipment performance has increased significantly to a level identified as category 5. This level of performance is largely due to the need for increased data transmission speeds which require connecting devices or improved physical elements, which may include plugs, sockets and switch-interconnection panels. The Telecommunications Industry Association (TIA) in cooperation with the Electronic Industries Association (EIA) has developed a proposed standard for category 5 components, where the transmission requirements of such components are characterized by speeds of up to 100 MHz and are They usually design for power supply applications with transmission speeds of up to 100 Mbps. It is important to note that the physical elements are only a main element of a REF: 25822 communication system, another main component is the transmission cable. Such cables are usually high performance shielded twisted pair (UTP) cables. Until recently, the development of cable performance exceeded the capacity of physical elements to transfer error-free data at such high rates of speed. For example, the demand for increasingly high frequency transmission rates resulted in some cables exceeding the category 5 standard by a considerable margin, ie the LANmark-350 cable from BerkTek. However, now there are also many connectors which exceed the category 5 performance standard, therefore it is very important to correctly connect the physical elements to the cable in the field, in such a way that the transmission characteristics are not degraded by the braids of the cable. wire not found near the connector. Two important test parameters for high-performance data transmission, this is category 5, are loss of attenuation and near-end (near-end cross-talk NEXT). Attenuation can be defined as a measure of loss of signal strength due to the physical elements that are connected and is derived from voltage measurements with frequency sweep over short lengths of twisted pair test leads of 100 ohms before and after connecting the connector under test. The loss of crosstalk can be defined as a measure of signal coupling from one circuit to another within a connector and is derived from voltage measurements with frequency sweep over short lengths of 100 ohm twisted pair test leads terminated at connector under test. The loss of NEXT is the way to describe the effects of signal coupling that cause portions of the signal on one pair to appear on another pair as unwanted noise. In view of these types of previous errors, the connector / cable interface is of utmost importance with respect to the performance of the data transmission. However, the physical difficulty in placing the pre-cut wires in their respective termination slots as long as the twisted pairs are kept as close as possible to the termination point, as is necessary to achieve Category 5 performance, made it impractical to the attempts of the previous technique to effect the completion in the field. The prior art of the field wiring termination tools covers the cutting tools, cutting tools and for stripping cables and tools to separate or flatten braided and shearing pairs of the lining, of category 5, as described in U.S. Patent No. 5,435,029 issued to Carlson, Jr. et al. However, none of the prior art tools improve the tool operator's ability to finish category 5 connectors in the field. Carlson, Jr. et al teaches how to leave exposed and separate twisted pair wires , but the problem persists with the insertion or placement of the individual wires to the respective termination grooves as long as the braids of the pair of wires are kept as close as possible to the termination point. Accordingly, it will be appreciated that there is a need for a portable tool which improves the feasibility of termination in the field of category 5 connectors by properly arranging the wires for placement within the connector termination slots and as long as keep the twisted pairs of wires as close as possible to the termination point.

BRIEF DESCRIPTION OF THE INVENTION It is therefore an object of the present invention to provide an improved tool for the preparation of wires. It is a further object of the present invention to provide a tool for the preparation of wires which appreciably improves the finishing ability in the field. It is still a further object of the present invention to provide a simple, non-expensive wire preparation tool which correctly arranges and positions the twisted pair wire for insertion into a connector. It is still a further object of the present invention to provide a tool for the preparation of wires which maintains the braids of the pair of wires as close to the point of termination as possible. It is still a further object of the present invention to provide a tool for the preparation of wires which may have a twisted pair wire separator. In general, a tool for the preparation of wires according to the present invention includes a flat base element with two adjacent projections extending upward at one end of the base, a path for the wire, defined between the projections and by at least one recess for the wire, arranged below the path for the wire. Another version of the wire preparation tool may include a projection of the twisted pair wire separator and a corresponding thumb guard, in addition to the tool components described above.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a top perspective view of the tool for the preparation of wires according to the present invention. Figure 2 is a top view of the wire preparation tool of Figure 1. Figure 3 is a bottom perspective view of the wire preparation tool of Figure 1. Figure 4 is a rear view of The wire preparation tool of Figure 1. Figure 5 is a sectional view along line 5-5 of Figure 4. Figure 6 is a perspective view of an operator of the tool inserting a Prearranged set of wires to the path for the wire. «Fig. 7 is a sectional view along line 7-7 of Fig. 6. Fig. 8 is a perspective view of an operator of the tool which inserts a prearranged set of wires into the slits for the wire.

Figure 9 is a perspective view of an operator of the tool, pulling the prearranged wires until the sheath or sheath of the cable prevents further movement. Fig. 10 is a sectional view along line 10-10 of Fig. 9. Fig. 11 is a sectional view along line 1 i of Fig. 9. Fig. 12 is a perspective view of an operator of the tool that prepares to cut the wires to the length. Figure 13 is a sectional view along line 13-13 of Figure 12, where the wires are cut and the tool operator is ready to remove them. Figure 14 is a perspective view of the operator of the tool that separates the wires from the slits for the wire. Figure 15 is a perspective view of the wires after they are cut to length. Figure 16 is a perspective view of the operator of the tool, which inserts a single wire from a disordered bundle to the path for the wire. Figure 17 is a perspective view of an alternative embodiment of the tool for the preparation of wires of the present invention. Figure 18 is a top view of the alternative embodiment of the wire preparation tool of Figure 17.

Figure 19 is a rear view of the alternative embodiment of the wire preparation tool of Figure 17. Figure 20 is a sectional view along line 20-20 of Figure 18. Figure 21 is a perspective view of the tool operator, which separates a wire from the twisted pair. Figure 22 is a top view of the wire separator of the alternative embodiment of the wire preparation tool, which separates a wire from the twisted pair. Figure 23 is a partially sectioned side view of the wire separator of the alternative embodiment of the wire preparation tool, which separates a wire from the twisted pair.

DESCRIPTION OF THE PREFERRED EMBODIMENT A wire preparation tool, which implements the concept of the present invention, is generally designated by the reference numeral 10 in the accompanying drawings. As shown in Figure 1, the wire preparation tool 10 is a one-piece tool with several integral parts, such as a base member 12, a leg 26 of the spring, vertically extending projections 14 and 16, a path 18 for the wire, slots 20 for the wire, a guide 22 for the cable and holes for the fingers 28. As seen in figures 1-5, the flat base element 12 is the base of the tool 10 which it has been formed and contoured for easy handling and efficient use when connecting category 5 connectors. Preferably, at least a pair of holes 24 extend through the base 12 for fastening purposes. Then the tool 10 can be mounted to any desired flat surface via conventional fasteners (not shown) that extend through the holes 24 or attachment to a tool operator via a ring type device (not shown). In addition, a guide 22 of the cable is formed at a central location on the base 12 and extends a distance along a portion of the longitudinal axis of the tool 10. A cable jacket can preferably be disposed within the guide 22 of the cable when the wires are prepared for termination, as will be explained in detail below. As seen in Figures 1-3, the leg 26 of the spring preferably extends from the base 12 to allow the projection 16 to be displaced laterally away from the projection 14 when a wire 44 passes through the path 18. For the wire, as shown in Figure 7. As a result, the projection 16 is urged against the projection 14 to adequately secure the wires 44 within the slots 20 for the wires, as shown in Figures 8 and 10. However, the leg 26 of the spring is not required for the present invention. As best seen in Figures 3-5, two projections 14 and 16 extend vertically upwardly from the base 12 and each projection is generally an image in the mirror of the other under construction. As generally described above, the projection 16 is disposed at the end of the leg 26 of the spring and at a distance from the base 12. However, the projection 14 is disposed at the end of the adjacent projection 16 to the base 12. The two projections 14 and 16 cooperate to secure and position the wires during preparation for their completion. The slits 20 for the wires are formed in a lower extension of the projection 16 for the positioning of the wires, in such a way that the slits 20 are preferably slightly smaller than the conventional category 5 cable wires and therefore, when the leg 26 of the spring propels the projection 16 against the projection 14, the wires are appropriately secured and arranged therein. However, it is recognized that the path 18 for the wire and the slots 20 for the wires can be appropriately sized for any type of wire preparation. As seen in Figures 1-3, a portion of each projection 14 and 16 consists of vertical walls 36 axially aligned, which define the trajectory 18 for the wire therebetween. The perpendicular walls 38 extend from the distal end of the axially aligned walls 36 to a position near the outer edge of the base 12 or leg 26 of the spring. The perpendicular walls 38 have a flat rear face 30 which provides an excellent guide surface with which an equal and uniform clean cut for the wires is obtained as described below. The horizontal sections 40 are defined on two edges by the axially aligned walls 36 and the perpendicular walls 38. Arranged where the two defined walls 36 and 38 are joined to the base 12, there are the horizontal sections 40, the final side of which defines a recognized area as the holes 28 for positioning the fingers. Preferably formed in each projection 14 and 16, the recesses 28 allow the operator of the tool to easily grasp the cable liner 42 and wires 44 which have been cut to length and are ready for insertion into a category connector. 5, as seen in Figure 13. As seen in Figures 1-3, the path 18 for the wire is disposed between and defined by the axially aligned walls 36 of the projections 14 and 16. The smooth upper portions, moderately curved 32 and 34 provide a conductor entry for the wires as they are manipulated toward and through path 18 for the wire. Preferably, these portions 32 and 34 allow the tool operator to simply separate the project 16, which is spring driven, from the project 14 by only inserting the wires and does not require any additional effort or manipulation. As seen in Figures 17-20, an alternative embodiment of the tool 10 for the preparation of wires has a similar construction and function, therefore, the reference numbers of the main mode that refer to the same parts of the modality alternative are the same. Since the alternative modality is virtually identical in construction and operation, only the adidonal parts will be discussed below. A project 46 of the spacer is disposed on the side of the base 12. If the leg 26 of the spring is used, the projection 46 of the spacer 46 would be posidoned opposite it. The projection 46 is of generally conical shape and preferably has a well-defined point. It has been shown that this form fadlita the function of untwisting, however any appropriate form can be used. A shield 48 for the thumb also extends from the same side of the base 12, to cooperate with the projection 46 of the spacer. The flat preferential protection 48 extends a certain distance away from the base 12 and the project 46 of the separator. Arranged in such a position, the protection 48 returns to its original position after each use. The wire of the twisted pair can be separated into individual wires by means of the cooperant of the project 46 and the shield 48, as will be described below. In the operation, as best seen in Figures 6-16, the liner 42 of the cable is separated, by any conventional method, a portion to reveal the wire 44 of the twisted pair. The individual wires may preferably be unraveled from their corresponding pair by placing the spacer 46 of the spacer between the wires 44, pressing the thumb guard 48 and pulling the wires 44 to untwist them, as shown in FIGS. 21-23 or any other conventional untwisting means. All other functions of the alternative mode are exactly like the original mode, apart from the separation function listed above and therefore will not be described here. After the wires 44 are untwisted, the tool operator preferentially arranges the wires 44 in their desired or required order, according to the category 5 connector used. As seen in Figure 16, the wires 44 can also be inserted into the tool 10 one by one if the operator of the tool so desires. Then the prearranged wires 44 are inserted near the slightly curved upper portions 32 and 34 and to the path 18 of the wire. As seen in Figure 7, when the wires 44 enter the path 18 for the wire, the leg 26 of the spring allows the project 16 to be displaced away from the project 14, so that the wires 44 can be insert additionally to path 18 for the wire. As the wires 44 are further inserted, they are then fitted to the slots 20 for the wire, as seen in Figures 8 10. Once the wires 44 are secured in the slots 20, the tool operator can pull the wires 44 in the direction of their longitudinal axis until the lining 42 prohibits further movement, as seen in figures 9 11. This step is important because this is how the tool operator keeps the braids within the lining as close as possible to the connector when they end in it. As seen in Figure 12, the tool operator preferably pushes the liner 42 to the cable guide 22, to positively posit the liner 42 against the axially aligned walls 36 prohibits any movement. Next, the operator of the tool can cut the wires 44 to the desired length, which is preferentially predetermined by the length of the axially aligned walls 36, thus the location of the rear face 30. As seen in Figure 13, once the wires 44 have been cut to length, the operator of the tool inserts his thumb index finger into the holes 28 for the appropriate fingers, to hold the liner 42 the wires 44. This is too important because maintaining the alignment positioning of the wires during installation is what allows the termination in the previously impractical field of the category 5 connectors. Additionally, this stage allows the tool operator to maintain position the braids as close as possible. possible to the end of bs individual wires 44. Then, the cable 42 is removed from the tool, as seen in Figure 14, for insertion to a category connector 5 termination in it. As shown in Figure 15, the wires 44 after removal of the tool 10 are all cut uniformly to length are arranged for their proper insertion to a Category 5 connector with the braids arranged as close as possible to the connector. In addition, while the particular preferred embodiments of the present invention have been shown described, it will be obvious to those skilled in the art that changes modifications can be made without departing from the teachings of the invention. The material summarized in the above description the accompanying drawings is offered by way of illustration only not as a limitation. The actual scope of the invention is proposed to be defined in the following claims when viewed in its proper perspective based on prior art. It is noted that with respect to this date, the best known method for the solidtante to carry out the aforementioned invendón, is the one that results from the present description of the invention. Having described the invendón as above, the content contained in the following is redacted as property

Claims (16)

1. Claims 1. A tool, characterized in that it comprises: a flat base element; adjacent portions extending upwardly from the base member; a trajectory for the wire, defined between the projections; and a plurality of slits for the wire disposed below the path for the wire.
2. 2. A tool according to claim 1, characterized in that a guide is formed for the cable at the base, axially aligned with the plurality of slits for the wire.
3. 3. A tool according to claim 1, characterized in that at least one hole extends through the base.
4. 4. A tool according to claim 1, characterized in that one leg of the spring, attached to the base element and a projection, propels a projection towards the other projection when they are separated.
5. 5. A tool according to claim 1, characterized in that holes are formed for the fingers in each project.
6. 6. A tool according to claim 1, characterized in that means are provided for separating the wires of the twisted pair on the base.
7. 7. A tool according to claim 6, characterized in that the separating means comprise a separation project extending from one side of the base.
8. 8. A tool according to claim 7, characterized in that the separation means further comprise a thumb guard extending from the same means to cooperate with the projection of the separator.
9. 9. A tool for the preparation of wires, characterized in that it comprises: a flat base element, adjacent projectors extending upwards from the base element; a trajectory for the wire, defined between the projections; a plurality of slits for the wire, arranged below the path for the wire; and means for separating the wire from the twisted pair, arranged on the base.
10. 10. A tool according to claim 9, characterized in that a guide is formed for the cable, at the base, aligned axially with the plurality of slits for the wire.
11. 11. A tool according to claim 9, characterized in that at least one hole extends through the base.
12. 12. A tool in accordance with claim 9, characterized in that one leg of the spring, attached to the base element and a projection, propels a projection towards the other projection when they are separated.
13. 13. A tool according to claim 9, characterized in that holes for the fingers are formed in the projections.
14. 14. A tool according to claim 9, characterized in that the separation means comprise a separation project extending from one side of the base.
15. 15. A tool according to claim 14, characterized in that the separating means further comprise a thumb guard, which extends from the same means to cooperate with the separating projection.
16. 16. A method for preparing Category 5 cables for termination in a corresponding connector, characterized in that it comprises the steps of: separating the desired amount of cable liner; separate the wires from the twisted pair; insert the wires to a path for the wire of a tool for the preparation of wires; posidonar the wires inside the recesses for the wire, under the path for the wire; pull the wires axially through the slots for the wire until the cable sheath prevents adidonal movement: cut the wires to the level with a back side of the tool; insert the fingers into the finger holes; and hold and remove the cable jacket and tool wires.