EP1928059B1 - Auxiliary connection for terminal blocks - Google Patents

Abstract

The auxiliary connection (1) has an insulator housing (2), in which a connector (6) for realizing a line connection is arranged. The connector is connected with a screw and socket arrangement (8), which has a screw (9) and a socket (12) that is designed for contacting an opening of a terminal block and for conductively contacting a bus bar and/or an interconnection unit of the terminal block . The socket is designed in an exchangeable manner, so that an additional connection is formed by exchange of the socket for contacting the socket with the interconnection unit. An independent claim is also included for a system of auxiliary connections.

Description

The invention relates to an additional connection for terminal blocks according to the preamble of claim 1.

The state of the art is the US Pat. No. 6,443,783 B1 called, which shows a connection box with a plurality of screw terminals, and the GB 1,203,921 showing a terminal block.

If a supply voltage for supplying electrical equipment, e.g. Of small systems with monitoring modules or sockets or the like. To be tapped, this is associated with the prior art with a considerable effort.

Against this background, it is the object of the invention to provide an easily manageable additional connection for terminal blocks, with which the problems described above are subsequently solved without loosening the existing conductor connections.

The invention solves this problem by the subject matter of claim 1 and the subject of claim 12.

Advantageous embodiments can be found in the dependent claims.

The additional connection according to the invention is easy to handle and thus allows in a simple and safe way even on already installed and wired terminal blocks the tap of a supply voltage.

It is by the chosen design by replacing only a few elements - sleeve and / or screw - an adaptation to different heights of terminal blocks or terminal blocks with and without transverse distribution element realized.

Fig. 1a,b

jeweils eine perspektivische Ansicht eines ersten Zusatzanschlusses, einmal mit einem aufgeklappten und einmal mit einem geschlossenen Gehäuse;

Fig.2

eine perspektivische Ansicht eines zweiten Zusatzanschlusses mit aufgeklapptem Gehäuse;

Fig.3

eine perspektivische Ansicht eines dritten Zusatzanschlusses mit aufgeklapptem Gehäuse; und

Fig.4a,b

jeweils eine perspektivische Ansicht einer Reihenklemme mit einem Zusatzanschluss;

The invention will be explained in more detail by means of exemplary embodiments with reference to the drawing. Show it:

Fig. 1a, b

in each case a perspective view of a first additional connection, once with an unfolded and once with a closed housing;

Fig.2

a perspective view of a second auxiliary terminal with unfolded housing;

Figure 3

a perspective view of a third auxiliary terminal with unfolded housing; and

4a, b

in each case a perspective view of a terminal block with an additional connection;

Fig. 1 shows an additional terminal 1 for terminal blocks, which comprises an insulating 2, which in turn has two about a film hinge 3 with each other pivotable and collapsible housing parts 4, 5. The housing parts 4, 5 are latched to each other here on latching pin 20 and corresponding recesses 21.

In the insulating housing 2, a connection 6 for the realization of a conductor connection is arranged, which is preferably designed as a screw connection. A realization in other connection technology, such as spring connection, direct plug-in technology or as an IDC connection would alternatively also be conceivable.

The conductor connection 6 is conductively connected via a busbar piece 7 to a screw / sleeve arrangement 8. For this purpose, the busbar piece 7 has a recess or a bore (not visible here), which passes through a screw 9, wherein the screw head 10 comes to rest on the busbar. On the Screw shaft 11 is placed on the side facing away from the screw head 9 side of the busbar piece 7, a sleeve 12, which may be screwed onto the screw shaft 11, for example, so that it is held captive, or which may alternatively be attached to the screw shaft 11.

The screw 9 and the sleeve 12 extend through a collar-like projection 13 of the insulating material through to the outside.

The additional connection has in the mounted state substantially an L-shape, wherein the longitudinal leg of the L by the collar-like projection 13 and the screw shaft 11 and the protruding sleeve 12 are formed.

The transverse leg, however, serves as a support on the terminal block. It has a lateral opening 14, through which a conductor can be guided into the conductor connection 6. A further opening 22 on the upper side of the housing 2 serves to actuate the screw connection 6. The screw connection 6 can also be designed as a drawbar connection, which is designed such that it receives uncrimped or crimped conductor ends or sleeves.

The screw head 10 of the screw 9 is accessible through a further opening 15 in the insulating housing and there rotatable with a tool.

To realize a branching power supply, the auxiliary connection is merely connected to a terminal 16a or 16b (see FIG Fig. 4 ), so that the projection 13 and protruding from this screw shaft 11 in a corresponding opening of the terminal 16 a or 16 b - see Fig. 4 - intervene. The screw is then screwed into an internally threaded opening in a power rail 17 of the terminal block, wherein the sleeve 12 is pressed against the bus bar 17 in order to realize a good contact, which allows the tapping of a supply voltage ( Fig. 4b ).

Optionally or alternatively, the screw tip 11 can be screwed into a likewise provided with internal thread opening of a cross-connecting element 18 for cross-connection with other terminal blocks in the direction of assembly of the support rail 19 ( Fig. 4a ), so that the sleeve 12 is pressed against the cross-connecting element 18.

In this way, the screw tip either directly contacts the bus bar 17 in the terminal block 16, which may be formed, for example, as a feed terminal or as a feed-through terminal or protective conductor terminal ( Fig. 4 ), and / or the transverse connection 18, so that the auxiliary connection 1 can be universally used in a simple manner both on terminal blocks 16a, b with and without cross-connection element or device 18. It is only necessary to replace the sleeve 12 on the screw 9 against another - shorter sleeve 12 -.

Different lengths of additional terminals 1, however, can be easily realized by selecting or a corresponding screw length of the screw 9, which is a comparison of Fig. 1 to 3 shows.

A secure anti-rotation when using the additional connections is ensured by Verdrehschutzelemente 23, which are provided on the housing 2 and, for example, engage in recesses of the terminal block.

The invention thus also provides an advantageous system of additional connections, wherein the additional connections of the system each have a screw / sleeve arrangement 8 with screws 9 and / or sleeves 12 of different lengths.

reference numeral

Second line

1

Insulated

2

film hinge

3

housing parts

4, 5

connection

6

Busbar piece

7

Screw / sleeve arrangement

8th

screw

9

screw head

10

screw shaft

11

shell

12

approach

13

opening

14

opening

15

terminals

16a, b

conductor rail

17

Cross connection element

18

rail

19

latching pin

20

recesses

21

opening

22

anti-rotation

23

Claims (11)

1. Auxiliary connection (1) for terminal blocks having an insulator housing (2), in which is arranged a connector (6) for realising a conductor connection, which is connected to a screw/sleeve arrangement (8) in a conductive manner, which has a screw (9) and a sleeve (12), which is designed for engagement with an opening of a terminal block (16) and for conductively connecting a bus bar (17) and/or a transverse connecting element (18) of the terminal block.
2. Auxiliary connection according to claim 1, characterised in that the sleeve (12) is designed in an exchangeable manner, so that the auxiliary connection is designed for contacting a terminal block (16) with the transverse connecting element (18) or without the transverse connecting element (18) by exchange of the sleeve (12).
3. Auxiliary connection according to claim 1 or 2, characterised in that the complete screw/sleeve arrangement (8) is designed in an exchangeable manner, so that the auxiliary connection can be used for terminals (16) having differents height by exchange of the sleeves (12) and the screws (9).
4. Auxiliary connection according to one of the preceding claims, characterised in that the sleeve is screwed onto a screw shaft (11).
5. Auxiliary connection according to one of the preceding claims 1 to 3, characterised in that the sleeve (12) is placed on the screw shaft (11).
6. Auxiliary connection according to one of the preceding claims 1 - 5, characterised in that the screw (9) and the sleeve (12) extend outwardly through a collar-shaped shoulder (13) of the insulator housing.
7. Auxiliary connection according to one of the preceding claims 1 -6, characterised in that it essentially has an L-shape in the mounted state, wherein a longitudinal leg of the L is formed by the collar-like shoulder (13) and the screw shaft (11) and the projecting sleeve (12).
8. Auxiliary connection according to claim 7, characterised in that the transverse leg serves for the support on the terminal block and has an opening (14), through which a conductor can be guided into the conductor connection (6).
9. Auxiliary connection according to one of the preceding claims 1 - 8, characterised in that the housing (2) has two housing parts (4, 5) pivotable with one another via an integral hinge, and which can be locked together in the mounted state.
10. Auxiliary connection according claim 9, characterised in that the housing (2) has a protection (23) against rotation.
11. System of several auxiliary connections according to one or several of the previous claims 1 - 10, wherein different auxiliary connections of the system respectively have a screw/sleeve arrangement (8) with screws (9) and/or sleeves (12) having different lengths.

Images