Terminal block with high transmission rate

The invention relates to a terminal block for high Übetragungsraten in the telecommunications and data technology, made of a plastic body with arranged in at least one row chambers for insulation displacement contact elements and arranged in the transverse walls between the chambers, axially parallel to this running slots for shrouds.

A terminal strip of the generic type is known from U.S. Patent No. 5,160,273. Here the problem of over- or crosstalk on the connected to adjacent insulation displacement contact elements cable wires by inserting a plurality of electrically conductive shielding plates between the individual pairs of insulation displacement contact elements to be solved. The problem of over or crosstalk occurs at the transmission of large information volumes by electrical lines, the information being transmitted at high frequencies. The transmission at such high frequencies generates radiation and interference between adjacent cable wires, in particular when these cable wires are closely adjacent to each other in the terminal block. By inserting the electrically conductive shield plates a greater over- or crosstalk attenuation is achieved at high transfer rates.

The known connecting bar comprises two parallel rows of chambers for insulation displacement contact elements, to which a shroud is associated with each of said opposite screen plates of the two rows are connected by a large-area connection plate, which is inserted in the corresponding lower part of the terminal block. However, the use of large-area, electrically conductive shielding plates in the terminal blocks requires an increase in the overall volume of the connecting strips and higher costs in the production of terminal blocks.

The invention is therefore based on the object to provide a terminal block, in which the arrangement of specially shaped shield plates ensures effective reduction of over- and crosstalk and a substantial simplification of the assembly of both the shielding plates and the cable wires to the insulation displacement contact elements are.

To achieve this object, the invention provides that the chambers of a terminal unit is arranged with the smallest possible distance from each other in the plastic body and the slots for receiving the shielding plates are formed in the thicker transverse wall between in each case two adjacent terminal units from the bottom side. This makes it possible, by means of only two shielding plates in a pair of low distance from each other in the plastic body chambers arranged that form a connection unit to shield. The greater distance between the chambers of adjacent terminal units reduces the risk of over- and crosstalk.

The shield plates have in a preferred embodiment at the top of a latching opening locked with a locking lug in the plastic body when inserting the shield plate into the terminal block. The shield plates are inserted from the underside of the terminal block. Furthermore, the shield plates have in the area of ​​the contact pin a cutout through which a favorable conductor guide occurs. The transmission values ​​are improved by a low affected by this measure magnetic field structure. The shield plates are connected via the contact pins and a conductor, for example, on a circuit board.

The envisaged in a preferred embodiment, forming the invention of cable lead inlet area of ​​the insulation displacement contact elements allows easier connection of wires, by the inserted manually cable wires are fixed before pressing with a tool reliably over the studs in the Implementation section.

According to a further embodiment, the shield plates of at least one chamber can be connected to each other by narrow webs inserted in grooves in the bottom of the plastic body. This design of the shield plates allows a technical and economical little expensive installation of the shield plates immediately in the upper part of the terminal block so that the arrangement of the shield plates according to the invention is also possible with wire connectors, which consist of a single row of chambers for insulation displacement contact elements and no bottom part exhibit.

Furthermore, three shield plates of two adjacent pairs of chambers by narrow webs can be bonded together to form a shield plate cage. Here, the three shield plates and connecting these narrow webs in the plane of the webs to form eight consisting of seven short sheet-metal strip.

In particularly preferred manner, in the transverse wall between two pairs each of closely adjacent chambers and a slot disposed in the transverse wall between in each case two pairs of closely adjacent chambers in each case two parallel slots for receiving the shield plates. This is a particularly compact design particularly enables a wire connector.

By paired arrangement of the chambers at a small distance from each other in a number of the plastic body, the crosstalk attenuation of the insulation displacement contact elements inserted into these chambers will be substantially improved, particularly as the distance of each pair of closely adjacent chambers of a connecting element to the adjacent pair of a further connecting element is greater than the spacing between the closely adjacent chambers. This capacity of adjacent pairs of arranged in a row insulation displacement contact elements can be further reduced and the benefits or crosstalk values ​​even further.

The invention is explained in more detail based on illustrated in the drawings embodiments of a terminal block for high transmission rates in telecommunications and data technology. Show it:<dl id="dl0001"><dt>Fig. 1</dt><dd>a top perspective view of the underside of the terminal block with introduced at different stages of screening plates,</dd><dt>FIG. 2</dt><dd>a side view of the terminal block according to Figure 1 with inserted shield plates,</dd><dt>Fig. 3</dt><dd>the top view of the underside of the terminal block according to Fig. 2,</dd><dt>Fig. 4</dt><dd>the sectional view through the connection strip according to FIG. 2 at the position of an inserted shield plate,</dd><dt>Fig. 5</dt><dd>the side view of a shield plate,</dd><dt>Fig. 6</dt><dd>the side view of an insulation displacement contact element,</dd><dt>Fig. 7</dt><dd>a partially sectioned side view of a terminal strip,</dd><dt>Fig. 8</dt><dd>is a partially sectioned end view of the terminal block according to Fig. 7,</dd><dt>Fig. 9</dt><dd>a bottom view of the terminal block according to Fig. 7.8 with shield plate cages,</dd><dt>Fig. 10</dt><dd>a bottom view of a shield plate cage, </dd><dt>Fig. 11</dt><dd>a side view of the shield plate cage of FIG. 10 and</dd><dt>Fig. 12</dt><dd>a front view of the shield plate cage of FIG. 10,.</dd></dl>

As illustrated in Figure 1, the terminal strip of a plastic body 1 is formed, comprising four terminal units 26 with two d spaced chambers second The chambers 2 are formed from the top 5 of the bar and serve for receiving insulation displacement contact elements 28. Each pair of chambers 2 of a terminal unit 26 is limited by a transverse wall 27, with the of the bottom 23, a slot 25 for inserting a shield plate 24 is arranged a contact pin 32nd The distance d between the chambers 2 of a terminal unit 26 is substantially less than the distance D between the chambers 2 of adjacent terminal units 26. The distance D is at least 1.5 times of the distance d. Each terminal unit 26 consists of a pair of chambers 2 with the insulation displacement contact elements 28 and a shield plate 24. the shield plate 24 to the left in Fig. 1 pulled shown is only necessary if a further bar is bayed. The terminal block can also be formed for each terminal unit 26 separate plastic body assemblies, which are strung together to any number of terminals 26th The plastic body 1 can be lined up with the front sides 37 either smoothly or latching elements.

In FIG. 2, the position of the insulation displacement contact elements 28 in the plastic body 1 and the spatial configuration of the individual terminal units 26 and the distances d between the chambers 2 of a terminal unit 26 and to the adjacent terminal units 26 is shown with a side view of the terminal block. The insulation displacement contact elements 28 are accessible from the top side 5 of the terminal block.

As shown in FIG. 6, the insulation displacement contact elements 28 a lead-in area 29 for cable wires not illustrated, which is formed from opposing dimples 30 on completion of a circular extension 31 upward. As a result of hand inlaid in the extension cable wire 31 is pre-fixed and can subsequently be pressed easily with a suitable tool into the clamping slot. 6

FIG. 3 shows the bottom view of the strip the position of the contact pins 33 of the insulation displacement contact elements 28 and the contact pins 32 of the shield plates 24 to each other and in relation to the underside 23 of the strip.

From Fig. 5, the shaping of the shield plates 24 can be seen. The shield plates 24 have a latch opening 34, which latch with corresponding latching lugs 35 in the upper region of the plastic body 1 (FIG. 4) .In region of the contact pins 32, a recess 36 is provided in order to ensure an optimal routing.

The position of the shield plates 24 in the plastic body 1 is shown in FIG. 4. It is clear that the contact surface of the shield plate 24 is thereby reduced. The contact pin 32 is eccentrically formed to the longitudinal axis of the shielding plate 24 so that there is sufficient space for the recess 36th

In a further embodiment of FIGS. 7 to 12 7 comprises according to FIG., Each chamber 2 a clamping slot 6 with lateral clamping webs 7 for clamping the insulation of a cable wire whose conductor is pressed into the insulation displacement contact element 3 and thereby solderless schraubfrei and be stripped is contacted with the insulation displacement contact element. 3 On the bottom 23 of the plastic body 1 made of plastic fixing pins 8 are formed, the printed circuit boards, are used to fasten the wire connector, for example.

As shown in FIGS. 7 and 9, the distance d between two immediately adjacent, for insertion of a pair of insulation displacement contact elements 3 serving clamping slots 6 is also smaller than the distance D between the clamping slot 6 of the chamber 2 of the one pair and the clamping slot 6 the chamber 2 of the adjacent pair. In the formed between two pairs of closely adjacent chambers 2 transverse wall 9 is from the bottom 21 side a slot 11 and in which arranged between two groups of closely adjacent pairs of wider transverse wall 10 are of the bottom 23 produces two slots 11 incorporated on the underside 23 the wire connector are interconnected by grooves 13,14,15 in the bottom 12, as shown in the bottom view in Fig. 9.

In the slots 11 and grooves 12 to 14 of two adjacent pairs of chambers 2 or two adjacent groups of chambers 2, a shown in FIGS. 10 to 12 shield plate cage 15 is inserted. This comprises three shield plates 16, which are here inserted in the plastic body 1 into the slots 11 between the pairs of adjacent chambers 2 from the bottom 23, and further narrow webs 17,18,19, which in the bottom grooves 12 to 14 of the plastic body 1 are engaged when the shield plates 16 are fully inserted into the corresponding slots 11th

The three shield plates 16 and the narrow webs connecting the latter 17 to 19 have in the plane of the lands 17 to 19 form an eight consisting of seven short sheet-metal strips on, as shown in Fig. 10. In this case, each of the outer shield plates 16 are each angled slightly in the diagonally opposite corners 20, as FIG. 10 shows.

Thus, the two shield plate cages 15 of the fit in Fig. 7 to 9 illustrated plastic body 1 of a core connector, closely adjacent chambers in the transverse wall 9 between the two pairs 2 a slot 11 and in the transverse wall 10 between two groups of pairs tightly juxtaposed chambers 2 each have two parallel slots 11 adapted for receiving the shield plates 16 of each shield plate cage 15th

Each of the two shield plate cages 15 has in the central region of the plastic body 1 of the wire connector in which in the transverse wall 10, two parallel slots 11 are formed for two shield plates 16, on the underside of shield plates 16 each have a Erdungsabgriff 21, as in Figure 7, is illustrated. 11 and 12 These are connected to a not shown ground point of a circuit board, not shown. The individual insulation displacement contact elements 3 have from the bottom outstanding contact pins 22 for connection with the corresponding conductor tracks of the circuit board.

LIST OF REFERENCE NUMBERS

<dl id="dl0002" compact="compact"><dt>1</dt><dd>Plastic body</dd><dt>2</dt><dd>chamber</dd><dt>3</dt><dd>Insulation displacement contact element</dd><dt>4</dt><dd>recess</dd><dt>5</dt><dd>top</dd><dt>6</dt><dd>clamping slot</dd><dt>7</dt><dd>clamping web</dd><dt>8th</dt><dd>fixing pin</dd><dt>9</dt><dd>partition</dd><dt>10</dt><dd>partition</dd><dt>11</dt><dd>slot</dd><dt>12</dt><dd>groove</dd><dt>13</dt><dd>groove</dd><dt>14</dt><dd>groove</dd><dt>15</dt><dd>Shroud cage</dd><dt>16</dt><dd>shroud</dd><dt>17</dt><dd>web</dd><dt>18</dt><dd>web</dd><dt>19</dt><dd>web</dd><dt>20</dt><dd>corner</dd><dt>21</dt><dd>Erdungsabgriff</dd><dt>22</dt><dd>Contact pin</dd><dt>23</dt><dd>bottom</dd><dt>24</dt><dd>shroud</dd><dt>25</dt><dd>slot</dd><dt>26</dt><dd>access unit</dd><dt>27</dt><dd>partition</dd><dt>28</dt><dd>Insulation displacement contact element</dd><dt>29</dt><dd>Introduction section</dd><dt>30</dt><dd>burl</dd><dt>31</dt><dd>extension</dd><dt>32</dt><dd>contact pin</dd><dt>33</dt><dd>contact pin</dd><dt>34</dt><dd>latching opening</dd><dt>35</dt><dd>locking lug</dd><dt>36</dt><dd>recess</dd><dt>37</dt><dd>front</dd></dl>