EP3111515B1 - Terminal strip and terminal strip block - Google Patents

Description

The invention relates to a terminal for snapping onto a mounting rail. Furthermore, the invention relates to a terminal block.

Electrical terminal blocks have been known for decades and are used millions of times in the wiring of electrical systems and equipment. The terminal blocks are usually snapped onto mounting rails, which in turn are often arranged in a plurality in a control cabinet. As conductor connection elements predominantly screw terminals or tension spring terminals are used in terminal blocks. In addition, however, cutting terminals or leg spring terminals can be used.

The basic type of terminal block is the connection terminal, which has at least two conductor connection elements which are electrically connected to one another via an electrically conductive connection rail, the busbar. In addition to this basic type, which is often referred to as a through terminal, there are a variety of different types of terminal block, which are specially adapted to the particular application. As an example, protective conductor terminals, disconnect terminals and test terminals may be mentioned here.

document WO 2013/167256 discloses the features of the preamble of independent claim 1.

Particularly in the case of terminal blocks which are used in power converter measuring circuits for power generation, transmission and distribution, it is often possible to implement various switching, separating and testing tasks. There are various accessories, such as test sockets, fixed Bridges or jumpers that can be mounted in terminal blocks and electrically connected to the busbar. With the help of the fixed bridges can be realized in a simple manner a potential distribution between adjacent terminal blocks. Jumpers are used to electrically connect two or more adjacent terminal blocks as needed so that there is a possibility to short-circuit a connected current transformer.

The invention is based on the object to provide a terminal block or a terminal block available, which or which has an improved functionality.

The object is achieved with the features of independent claim 1. Advantageous embodiments and advantageous developments of the invention are specified in the dependent claims.

The terminal block according to the invention comprises a terminal housing having a first terminal side and a second terminal side, a bus bar arranged in the terminal housing, and at least two conductor terminal elements arranged in the terminal housing for connecting at least one conductor to the busbar, wherein at each of the two terminal sides of Terminal housing each having a first functional shaft with at least one connector terminal receiving area and at least a second functional shaft with at least one Schraubanschlussaufnahmebereich are arranged, wherein for each Steckanschlussaufnahmebereich and for each Schraubanschlussaufnahmebereich in the busbar Connection area is formed, wherein the function shafts of a connection side are spaced apart such that at least one plug connection in the first function shaft and at least one screw connection in the second function shaft can be accommodated simultaneously on one connection side.

The terminal block according to the invention makes it possible to arrange at the same time one or more plug-in connections and one or more screw connections to the busbar at the function shafts of one connection side. By now given way to connect one or more plug-in connections and one or more screw parallel to each other on the terminal sides of the terminal housing, the functionality compared to conventional terminal blocks can be significantly increased, in which per connection side only one or more plug-in connections or one or more screw electrically can be arranged contacting. In this way, also the flexibility of the terminal can be increased, since a user can assemble the terminal block with screw terminals and plug connections depending on the needs and intended use, without being limited in a combination of the plug connections and screw connections. For each connection side, the first function shaft with at least one plug connection receiving area and the second function shaft with at least one Schraubanschlussaufnahmebereich with a sufficiently large distance from each other, so that the plug connections and the screw terminals without hindering each other in the respective

Function shafts or the respective receiving areas of the Function shafts of a connection side can be inserted and mounted. In the Steckanschlussaufnahmebereichen the plug-in connections can be arranged quickly and easily, so that by means of the plug connections a rapidly variable connection can be formed. This gives the user the option of packaging a possibly partially pre-assembled terminal block flexibly with plug-in connections. The screw connections can already be prefabricated in the screw connection areas by the manufacturer, so that connections can be formed by means of the screw connections, which can be permanently installed.

It is preferably provided that a partition wall is arranged at least transversely to the longitudinal extension of the terminal block between the first functional shaft and the second functional shaft of a connection side, wherein the partition wall is preferably placed on an edge of the functional ducts. The partition wall thus preferably forms an extension at least to one wall of the function shafts, wherein the partition wall can preferably be formed directly on a wall of the function shafts having the edge. The partition thus preferably projects beyond the edge of the function shafts. The partition wall is preferably placed there on the edge of the function shafts, where the function shafts are open and the plug-in connections and / or screw connections can be introduced into the respective function shaft. Through the partition, the air and creepage distances between the function shafts can be increased. In addition, the partition wall can extend a guide in particular of a plug connection over the wall of the guide shafts, so that, depending on the length of the dividing wall by means of the dividing wall, a guide of a plug connection can be formed over a large part or over the entire length of the plug connection. Due to the improved guidance, for example, tilting of a plug connection in the plug connection receiving region of a first function shaft can be prevented. In addition, an optical separation of the functional shafts of a connection side can also be formed by the partition, so that the different function shafts of a connection side can be visually more easily distinguished from one another by the partition wall.

In order to further facilitate insertion of a plug connection into a plug connection receiving area of a function shaft, the partition wall can have an insertion bevel. The insertion bevel is preferably formed on an upper end of the dividing wall in a plug-in connection of a plug-in connection in a plug-in terminal receiving area. The insertion bevel may preferably have an angle of 45 °.

Further, the partition may preferably have a guide groove. The guide groove can preferably be brought into engagement with a guide web formed on a plug-type connection, so that when a plug-in connection is inserted into a funnel, the plug-in connection is safely and specifically introduced into the funnel without the risk of tilting of the plug-in connection via the guide web engaging in the guide groove of the partition can be. The guide groove and the guide bar may, for example, also be dovetail-shaped.

The divider wall may extend over one or more areas of the edge of the function wells. For example, the partition may be U-shaped and thus extend over three adjacent areas of the edge of the function shafts. The partition can thus extend in addition to their arrangement transversely to the longitudinal extension of the terminal block in the longitudinal extension of the terminal. On the one hand, this makes it possible to further improve the guidance of the plug connection and / or the screw connection into the guide shafts. On the other hand, the air and creepage distances can be improved by the arrangement of the partition in the longitudinal extension of the terminal block between adjacent terminal blocks arranged.

The terminal block can be used for example in current transformer measuring circuits or voltage transformer measuring circuits, wherein the terminal block can then be designed as a disconnect terminal or transducer disconnect terminal. If the terminal block is formed as a disconnect terminal or transducer disconnect terminal, then the busbar is preferably formed of a first of the first terminal side associated busbar piece and a second of the second terminal side associated busbar piece, wherein a longitudinal circuit breaker between the two busbar pieces can be stored and wherein the two Busbar pieces in a first position of the longitudinal circuit breaker connected to each other and can be separated from each other in a second position of the circuit breaker.

The object of the invention is further achieved by means of a terminal block, which has at least two as described above, off and further educated, side by side aufrastbare on a DIN rail terminal blocks.

The invention will be explained in more detail with reference to the accompanying drawings with reference to preferred embodiments.

Fig. 1

eine schematische perspektivische Darstellung eines aus mehreren Reihenklemmen ausgebildeten Reihenklemmenblocks mit mehreren noch nicht montierten Steckanschlüssen,

Fig. 2

eine schematische perspektivische Darstellung des in Fig. 1 gezeigten Reihenklemmenblocks mit montierten Steckanschlüssen,

Fig. 3

eine schematische perspektivische Darstellung des in Fig. 1 gezeigten Reihenklemmenblocks mit mehreren noch nicht montierten Schraubanschlüssen,

Fig. 4

eine schematische perspektivische Darstellung des in Fig. 1 gezeigten Reihenklemmenblocks mit montierten Schraubanschlüssen,

Fig. 5

eine schematische Draufsicht auf eine Längsseite einer Reihenklemme mit an der Reihenklemme montierten Steckanschlüssen und Schraubanschlüssen, und

Fig. 6

eine weitere schematische Draufsicht auf eine Längsseite einer Reihenklemme mit an der Reihenklemme montierten Steckanschlüssen und Schraubanschlüssen.

Show it

Fig. 1

a schematic perspective view of a plurality of terminal blocks formed terminal block with a plurality of not yet mounted plug-in connections,

Fig. 2

a schematic perspective view of the in Fig. 1 shown terminal block with mounted sockets,

Fig. 3

a schematic perspective view of the in Fig. 1 shown terminal block with several not yet mounted screw terminals,

Fig. 4

a schematic perspective view of the in Fig. 1 shown terminal block with mounted screw terminals,

Fig. 5

a schematic plan view of a longitudinal side of a terminal with at the terminal block mounted plug connections and screw connections, and

Fig. 6

a further schematic plan view of a longitudinal side of a terminal with mounted on the terminal plug and screw terminals.

Fig. 1 shows a terminal block 10 with six juxtaposed on a mounting rail 11 terminal blocks 12. The terminal blocks 12 are each in the form of a disconnect terminal, which are used in particular as a transducer disconnect terminal in current transformer measuring circuits of power generation and distribution formed.

The terminal blocks 12 each have a terminal housing 13 which is formed of an insulating material, for example plastic.

Each terminal housing 13 has a first terminal region 14, a second terminal region 15 and a switching region 16, wherein the switching region 16 is formed in the longitudinal extension of a terminal block 12 between the two terminal regions 14, 15.

Within the terminal housing 13, a bus bar 17 is arranged, which extends along the two connection areas 14, 15 and the switching area 16. The busbar 17 is formed from a first, the first terminal side 14 associated busbar piece 17a and a second, the second terminal side 15 associated busbar piece 17b, wherein the two busbar pieces 17a, 17b lie in a plane. In the switching area 16, a longitudinal circuit breaker 18 between the two busbar pieces 17a, 17b slidably mounted in the terminal housing 13. In Fig. 1 - 6 the longitudinal circuit breaker 18 is shown in a position in which the two busbar pieces 17a, 17b are interconnected via the longitudinal circuit breaker 18 by the longitudinal disconnector 18 overlaps or overlaps both an end of the first busbar piece 17a and an end of the second busbar piece 17b.

In each case a conductor connecting element 19 is arranged on the two busbar pieces 17a, 17b of the busbar 17, wherein a conductor can be inserted into the conductor connecting elements 19 via conductor lead-in openings 20 formed in the terminal housing 13 in order to electrically connect the conductors to the busbar 17 by means of the conductor connecting elements 19 to contact. The conductor connection elements 19 are in the in Fig. 1 - 6 shown embodiments designed as screw connection.

On each of the two connection sides 14, 15 of the terminal housing 13, a first functional shaft 21 and a second functional shaft 22 are formed. The first functional shaft 21 of both the first connection side 14 and the second connection side 15 has in each case two plug connection receiving regions 23a, 23b arranged one behind the other in the longitudinal extension of the terminal 12, into each of which a plug connection can be inserted and installed. The second functional shaft 22 of both the first connection side 14 and the second connection side 15 has one each Screw terminal receiving portion 24, in which a screw can be inserted and mounted. The first functional shaft 21 of the first connection side 14 is thus constructed identical to the first functional shaft 21 of the second connection side 15. Furthermore, the second functional shaft 22 of the first connection side 14 is thus constructed identical to the second functional shaft 22 of the second connection side 15.

For each plug-in terminal receiving area 23a, 23b and for each screw terminal receiving area 24, a terminal area, for example in the form of an opening, is formed in the bus bar 17 so that a plug-in terminal inserted into a plug-in terminal receiving area 23a, 23b and a screw terminal receiving area 24 are inserted Screw terminal can be electrically contacted in each case with the busbar 17 via the connection areas.

At the in Fig. 1 - 6 shown terminal blocks 12, all function shafts 21, 22 are equipped at the same time with plug connections or screw terminals, so that for example the first function slot 21 of the first terminal side 14 at two Steckanschlussaufnahmebereichen 23a, 23b one or two plug connections and the second function slot 22 of the first connection side 14 at the same time Can accommodate screw without the screw and the connectors interfere with each other or interfere. To achieve this, the function shafts 21, 22 of a connection side 14, 15 are sufficiently far apart. The two Function shafts 21, 22 of a connection side 14, 15 are arranged one behind the other in the longitudinal extension of the terminal block 12.

Between the two function shafts 21, 22 of a connection side 14, 15 a partition 25 is arranged in each case. At least one region of the partition wall 25 is arranged transversely to the longitudinal extent of the terminal block 12. The partition wall 25 projects beyond an edge 26, 27 of the functional shafts 21, 22, so that the partition wall 25 forms an extension at least to one wall of the functional shafts 21, 22 by placing the partition 25 on the edge 26, 27 of the functional shafts 21, 22 ,

The partition 25 has an insertion bevel 28 at its upper end. Furthermore, the partition 25 has a guide groove 29, which extends in the insertion direction 30 of a plug connection.

At the in Fig. 1 - 6 As shown, the partition wall 25 is U-shaped, wherein the partition 25 extends over three adjacent, mutually angled portions of the edge 26 of the first functional shaft 21. The partition wall 25 thus extends in addition to its arrangement transversely to the longitudinal extension of the terminal block 12 in the longitudinal extension of the terminal block 12th

In Fig. 1 Various plug connections, in particular two plug-in bridges 31, a switch bridge 32 and a test plug socket 33, are shown prior to mounting in the terminal blocks 12 of the terminal block 10. In Fig. 2 These are the plug-in connectors, the two jumpers 31, the switch jumper 32 and the test plug socket 33 in the plug connection receiving areas 23a, 23b of the first function shafts 21 of the two connection sides 14, 15 inserted and mounted.

In Fig. 3 Screw connections are shown in the form of mutually bridged screws 34, which, as in Fig. 4 is shown, can be screwed into the Schraubanschlussaufnahmebereiche 24 of the second function shafts 22. Two or more arranged in a row screws 34 are formed as a Schaltschraubbrücke 36 for generating a current transformer short circuit, wherein the screws 34 are connected to each other here via a bridgework 37. The bridge combs 37 can be opened in the terminal assembly and locked in an open position. Furthermore, in Fig. 3 and 4 a test socket screw 35 is shown, which can be screwed in place of a screw 34, as also in Fig. 4 is shown.

Fig. 5 shows an embodiment in which a plug connection in the form of a jumper 31 and in the second functional shaft 22 of the first connection side 14 at the same time a screw in the form of a test socket screw 35 is mounted on the first connection side 14 in the first functional shaft 21. At the second connection side 15, a switching screw bridge 36 is mounted as a screw connection only in the second function shaft 22.

In Fig. 6 a further embodiment is shown in which at the first connection side 14 in the first functional shaft 21, a plug connection in the form of a switching bridge bridge 32 and in the second functional shaft 22 of the first connection side 14 at the same time a screw in the form of a test socket screw 35 is mounted. On the second connection side 15, two plug-in connections in the form of a jumper 31 and a plug-in test plug socket 33 are mounted in the first functional shaft 21 and in the second functional shaft 22 of the second connection side 15 at the same time a Schaltschraubbrücke 36 is mounted as a screw. LIST OF REFERENCE NUMBERS Modular terminal block 10 rail 11 terminal 12 terminal housing 13 First connection side 14 Second connection side 15 shifting region 16 conductor rail 17 First busbar piece 17a Second busbar piece 17b Longitudinal separation switch 18 Conductor connection element 19 Conductor insertion opening 20 First functional shaft 21 Second functional shaft 22 Plug connector receiving area 23a, 23b Schraubanschlussaufnahmebereich 24 partition wall 25 edge 26 edge 27 chamfer 28 guide 29 plug-in direction 30 jumper 31 Switching plug bridge 32 test socket 33 screw 34 Prüfbuchsenschraube 35 Shift switch robbery Bridge 36 bridge comb 37

Claims (7)

1. Terminal strip (12) for latching onto a carrier rail (11), comprising
   a terminal housing (13) having a first connection side (14) and a second connection side (15),
   a busbar (17) which is arranged in the terminal housing (13), and
   at least two conductor connection elements (19), which are arranged in the terminal housing (13), for connecting in each case at least one conductor to the busbar (17),
   wherein in each case one first function shaft (21) with at least one plug connection receiving region (23a, 23b) and at least one second function shaft (22) with at least one screw connection receiving region (24) are arranged on each of the two connection sides (14, 15) of the terminal housing (13),
   wherein a connection region is formed for each plug connection receiving region (23a, 23b) and for each screw connection receiving region (24) in the busbar (17),
   wherein the function shafts (21, 22) of one connection side (14, 15) are arranged in a manner spaced apart from one another in such a way that at least one plug connection can be received in the first function shaft (21) and at least one screw connection can be received in the second function shaft (22) at the same time on one connection side (14, 15).
2. Terminal strip (12) according to Claim 1, characterized in that a separating wall (25) is arranged at least transverse to the longitudinal extent of the terminal strip (12) between the first function shaft (21) and the second function shaft (22) of one connection side (14, 15), wherein the separating wall (25) is placed on an edge (26, 27) of the function shafts (21, 22).
3. Terminal strip (12) according to Claim 2, characterized in that the separating wall (25) has an insertion bevel (28).
4. Terminal strip (12) according to Claim 2 or 3, characterized in that the separating wall (25) has a guide groove (29).
5. Terminal strip (12) according to one of Claims 2 to 4, characterized in that the separating wall (25) is of U-shaped design.
6. Terminal strip (12) according to one of Claims 1 to 5, characterized in that the busbar (17) is formed from a first busbar piece (17a) which is associated with the first connection side (14) and from a second busbar piece (17b) which is associated with the second connection side (15), wherein a longitudinal isolator switch (18) is displaceably mounted between the two busbar pieces (17a, 17b) in the terminal housing (13), wherein the two busbar pieces (17a, 17b) are connected to one another in a first position of the longitudinal isolator switch (18) and are isolated from one another in a second position of the longitudinal isolator switch (18).
7. Terminal strip block (10) comprising at least two terminal strips (12) which can be latched onto a carrier rail (11) next to one another and are formed according to one of Claims 1 to 6.

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