IL105857A

IL105857A - Termination device for the communication and data technique

Info

Publication number: IL105857A
Application number: IL10585793A
Authority: IL
Original assignee: Krone Ag
Priority date: 1993-02-08
Filing date: 1993-05-31
Publication date: 1996-09-12
Also published as: EP0610565A3; DE4303976C1; IL105857A0; EP0610565A2

Abstract

The termination device has a terminal rail (2) with a series of contacts lying one behind the other in a longitudinal direction cooperating with screened electrical cables (6,7) extending transversely to the terminal rail. A common screening device (3) is provided for every 2 cables, their cable wires lying on opposite sides of the terminal rail. The screening device extends parallel to the cables, transversely to the longitudinal direction on both sides of the terminal rail. Pref. the screening device comprises a cable holder receiving each cable and its outer screening mesh and a pair of screening plates (4) filling around the terminal rail. ADVANTAGE - Effective cable screening for high transmission rates. [DE4303976C1]

Description

OO-imin mnypni? n 'H-joi? ·>£ηο ipnn TERMINATION DEVICE FOR THE COMMUNICATION AND DATA TECHNIQUE RCNE AKTIENGESELLSCHAFT TERMINATIOK DEVICE FOE THE COHHVMICATION ABD DATA TECHMIQUE The invention relates to a' termination device for the communication and data technique, comprising" a terminal bank having several contact ele ments inserted one behind the otheir in a longitudinal direction thereto for terminating /cables provided with a screen meshing and supplied transversely to the longitudinal direction of the terminal bank, and a screen device for the cables, A prior art termination device for the communication and data technique .comprises a terminal bank plugged onto a base structure of section bars and a metal plate connecting the la-tterr as a screen device for the cables supplied transversely to the connector bank. Said screen device for the cables supplied to the terminal bank does not meet important requirements, if the application of the termination device is intended for high-speed networks of the communication and data technique. The communication transmission over transmission path? with 100 megabits/s or the application in a fre uenc> range of 20 to 100 MHz, resp., require highest performances that cannot be achieved by the prior art screen device for the cables. In particular with higher frequencies, the quality of the screen device is decisive for the quality of data transmission.

It is therefore the object of the invention to improve the termination device of the type referred to hereinbefore with regard to the quality of the screen device.

The solution of this object is achieved by that for two cables each opposedly connected with their cable wires to the terminal bank and provided with a screen meshing, a screen device disposed transversely to the longitudinal direction and on either side of the terminal bank parallel/ to the cable wires is provided. Thereby, the screening of the opposed cables connected with their cable wires to the terminal bank is forwarded separately from the remaining cables connected to the terminal bank, so that the quality of screen forwarding is considerably increased. By the termination device according to the invention, the potential of the screen of each individual cable is forwarded to the potential of the other cable, the individual cable wires of which are connected with each other. This is particularly very essential for a quality improvement of the screen forwarding with higher frequencies in data transmission.

In another embodiment of the present invention, the screen device for a pair of cables opposedly connected at the terminal bank is formed of a cable holder receiving said cables and the screen meshings thereof, and of two screen plates engaging thereinto and on either side of the terminal bank, said screen plates being received by a bank holder surrounding the terminal bank. Thereby, a particularly advantageous screen forwarding is achieved.

In a further embodiment of the present invention, the bank holder is formed of a base body provided with U-shaped transverse guiding portions for receiving the cable holders and with front plates, and of a V-shaped wire guide body disposed underneath the terminal bank having spaced U-shaped web plates for front-side latching of the screen plates, the wire guide body being received, with its web plates, between the front plates of ther base body.

In said embodiment, the screen plates may be provided, at one end, with latch lugs, for engaging into latch brackets at the front sides of the cable holders, and at the other end, with latch shoulders for latching into latch grooves formed at the front sides of the U-shaped web plates. receiving portions disposed side-by-side for the cables, and with apered sleeves surrounding the latter for clamping the screen meshing. The sleeves may be provided with lugs, and the receiving portions may be provided with latches for pressing the lugs in.

The screen plates and the cable holders may be made, e.g. of metal or metalized plastic.

In the embodiment in which the screen plates provided at the ends with said latch shoulders are provided with screen tappings for inserting the screen tappings of plugs to be inserted into the terminal bank.

Reference is made, in particular, to the screen tappings provided at the screen plates for inserting the screen tappings of screened plugs to be inserted into the terminal bank. Thereby, not only the permanent wiring of a cable pair to the terminal bank, separately from the permanent wiring of another cable pair, is screened, but in addition, the wiring of a plug serving for connecting other services is also screened, the potential of the screen of the cable pairs being immediately forwarded to the potential of the plug.

In the following, the invention will be described in more detail, with reference to a preferred embodiment for the communication and data technique represented in the drawings. There are: Fig. 1 a top view of the termination device, partially sectional, Fig. 2 a cross-section of the termination device with a plug being disposed in front thereof, Fig. 3 an exploded view of the termination device, and Fig. 4 an enlarged detail of a cable holder with associated sleeve in an enlarged representation.

The termination device 1 for the communication and data teohnique is composed of a terminal bank 2 with four screen devices 3 of two sareen plates 4 each and a cable holder 5 for two supplied cables 6, 7, and of a bank holder 8 of a U-shaped wire guide body 9 with five web plates 10 and a base body 11 with two front plates 12. For inserting the termination device 1,' a front plate 13 ia provided, through which plugs 14 with insertion tongues 15 can be inserted into the terminal bank 2.

The terminal bank 2 comprises a plastic body 16 with non-shown contact elements being inserted one behind the other in a longitudinal direction, said contact elements generally being adapted as outting and clamping contact elements and comprising a non-shown centre tapping for inserting the insertion tongues 15 of a plug 14. The plastio body 16 comprises, at its two longitudinally spaced ends, clamping pieces 17 for attaching the terminal bank 3 at the non-shown section bars of a base structure.

The base body 11 of the terminal holder 8 comprises four transverse guiding portions 18 arranged slde-by-side for receiving one oable holder 5 each and the two front plates 12 including, at their ends projecting over the base body 11, one pair each of spaced clamping pieces 19, which are flush, in an assembled termination device, with the clamping pieces 17 of the terminal bank 2, and which oan be snapped, together therewith, onto the non-shown section bars of the base structure. The V-shaped wire guide body 9 engages, with ist U-shaped web plates 10, between the two front plates 12 of the base body 11. Thereby, on either side of the V-shaped wire guide body 9 and between two adjacent web plates 10 each, guide channels for the cables 6, 7 and the cable wires 20 thereof are formed, which are connected to the non-^shown cutting and clamping contact elements of the terminal bank 2, as is shown in Figs. 1 and 2. Simultaneously, two adjacent web plates 10 each serve for receiving two opposed screen plates 4, as is shown in Fig. 2 .

Each cable holder 5 is provided with two tapered receiving portions 21 disposed side-by-side, into which are inserted tapered sleeves 22, which are slid onto the cables 6, 7. When inserting the tapered sleeve 22 into the respective receiving portion 21 , the screen meshing of the respective cable 6, 7 is placed around the tapered sleeve 21 and is pressed into the tapered receiving portion 21 of the cable holder 5. Lugs 23 configured on the cylindrical portion of the outside of the sleeve 22 will then come into engagement with latohes 24 on the cylindrical portion of the receiving portion 21. Thereby, a solid, conduotive connection between the screen meshing of the cable 6, 7 and the cable holder 5 is established. The latter is of metal or of metallized plastic, in order to forward the potential of the screen meshing.

A cable holder 3 configured in this way with two cables 6, 7 and the respective sleeves.22 is inserted into a transverse guiding portion 18 of the base body 11 of the bank holder 6, and the cables 6, 7 are fixed at a cable support portion 25 being part of the base body 11.

The cable holders 5 are provided, on both front sides, with latch brackets 27, into which engage latch lugs 28 having a recess at one end of the screen plates 4. The screen plates 4 surround, with a projecting portion 29, the terminal bank 2 and the aable wires 20 connected thereto, and are latched, at the other end, with latch shoulders 30 for latching into latch grooves 32 formed at the front sides 31 of the U-shaped web plates 10, as is shown in Fig. 2. The screen plates 4 are provided, at their ends provided with latch shoulders 30, with ecreen tappings 26 for inserting the screen tappings 34 of the screened plugs 14 to be inserted into the terminal bank 2, as is shown in Fig, 2. Thereby, the screen tappings 26 of the screen plates 4 engage through an opening 33 of the front plate 13. - 6 -

Claims

1. A termination device for the communication and data technique, comprising a terminal bank having several contact elements inserted one behind the other in a longitudinal direction thereto for terminating cables provided with a screen meshing and supplied transversely to the longitudinal direction of the terminal bank, and a screen device for the cables, characterized by that for two cables each opposedly connected with their cable wires to the terminal bank and provided with a screen meshing, a screen device disposed transversely to the longitudinal direction and on either side of the terminal bank parallely to the cable wires is provided.

2. A termination device according to claim 1, characterized by that the screen device is formed of a cable holder receiving the cables and the screen meshings. thereof, and of two screen plates engaging thereinto and disposed on either side of the terminal bank, said screen plates being received by a bank holder surrounding the terminal bank.

3. A termination device according to claim 2, characterized by that the bank holder is formed of a base body provided with U-shaped transverse guiding portions for receiving the cable holders and with front plates, and of a V-shaped wire guide body disposed underneath the terminal bank having spaced U-shaped web plates for front-side latching of the screen plates, the wire guide body being received, with its web plates, between the front plates of the base body.

4. A termination device according to claim 3, ed, at one end, with latch lugs for engaging into latch brackets at the front sides of the cable holders, and at the other end, with latch shoulders for latching into latch grooves formed at the front sides of the U-shaped web plates.

5. A termination device according to claim 3 or 4, characterized by that the cable holders are provided with two tapered receiving portions disposed side-by-side for the cables, and with tapered sleeves surrounding the latter for clampint the screen meshing.

6. A termination device according to claim 5, characterized by that the sleeves are provided with lugs, and that the receiving portions are provided with latches for pressing the lugs in.

7. A termination device according to any of claims 2 to 6, characterized by that the screen plates and the cable holders are made of metal or metalized plastic. A termination device according to anyh of claims 2 to 7, characterized by that the screen plates provided at their ends with said latch shoulders, are provided with screen tappings for inserting the screen tappings of plugs to be inserted into the terminal bank.