DE20305313U1 - Connection device for making contact with a conductor rail and/or mounting rail has a contact spring for expanding twofold and a contact zone formed between contact studs - Google Patents

Abstract

A first contact spring (CS) (1) expands twofold. A contact zone (CZ) (5) is formed between first (3) and second (4) contact studs. On their sides opposite each other, the first CS and a second CS in the CZ are bordered by the open ends of a bridging spring (2). The contact studs interlink through a wall (8) running vertical to the contact studs. An independent claim is also included for a series terminal with an insulating case to be locked onto a mounting rail.

Description

Such a connection device - also called “connection contact” in practice - is known from DE OS 37 10 896. In the connection device shown, which is described in this document in 9 is shown, the spring of the contact shown is insufficiently secured to the contact spring in its mounting position. There is also the problem that the connection device shown cannot be easily configured as a double connection.

The invention therefore has the task the generic connection device to develop in such a way that the spring is easy to the contact spring is secured, the option should be given, the connection device with only minor design changes can also be trained as a double connection.

The invention solves this problem with the object of claim 1. Thereafter, the contact tongues by one to the Contact tongues perpendicular wall connected to each other, such that the connection area of the two contact tongues of the contact spring next to the back area the feather is arranged, being in extension of the contact tongues following recesses for the over-spring busbar sections or further contact tongues of a further contact spring are formed.

This arrangement ensures on the one hand easy assembly and a secure hold of the spring to the side of the back area the contact spring without the dimension of the over spring compared to the solution the DE OS 37 896 are changed would. About that are either a busbar and / an additional contact spring simple one-piece with only minimal material waste in the connection device integrated. It is thus also a simple connection without further ado as well as a double connection.

A particularly advantageous spring characteristic, combined with the further advantage of particularly simple manufacture just by punching out of a sheet metal strip (without an additional Bending step) results when the spring is omega-shaped is.

The connection device is suitable for use of all kinds. following applications possible and also inexpensive realized:

• - Bridge contact between two busbars of the same potential;
• - simple Execution: one-sided copper contact with many branching options and a stainless steel spring or external suspension,
• - double Execution: two-sided copper contact made with many branching options and a stainless steel spring;
• - more compact Contact that in plastic housings too can be installed symmetrically and only a very small installation space (Connection compartment) required. It will also be a high one to lead Current carrying capacity reached.
• - Earth connection bridge contact between two different potentials (potentials with one another connect to V-terminals), potential multiplication cross)
• - Earth connection contact for all Terminals with different connection systems or for any electrical earth connection systems
• - OEM contact
• - direct plug-in technology; Advantage: smallest design of the clamps possible
• - Interface contact (Solar connector) in the future Solar technology plug-in connector
• - Admission for cross-connection rails or NT busbars
• - Luster clamp.

Advantageous configurations are the subclaims refer to.

The invention also provides a terminal block with an insulating housing for snapping onto a mounting rail, which has a connection device according to the invention is provided.

The invention is explained below of embodiments with reference to the drawing described. It shows:

1 a perspective view of a first connection device;

2 a perspective view of a second connection device;

3 a perspective view of a third connection device;

4 the connection device 1 in the foot area of a terminal block for contacting a mounting rail;

5 a perspective view of a fourth connection device designed as a double connection;

6 the double connection 5 in the foot area of a terminal block for contacting a mounting rail and a busbar;

7 a fifth connection device designed as a single connection.

1 shows a connection device which is particularly suitable for contacting the edge of a hat-shaped mounting rail, a busbar or another flat-shaped conductor (see 4 and 6 ). The connection device has a contact spring 1 on which is springy from a spring 2 is enclosed, which increases the force with which the contact spring contacts a conductor.

The contact spring 1 has two opposing contact tongues 3 . 4 on between which a contact zone 5 is trained.

The contact spring 1 widens starting from the constriction, which is the contact zone 5 to con tacting of the busbar or mounting rail is defined twice, with the free ends of the contact tongues 3 . 4 an insertion mouth 6 form.

The feather 2 is omega-shaped (or in the manner of a slotted circular ring), with the free, here slightly thickened ends 11 . 12 the omega-shaped spring 2 the two contact tongues from the outside 4 . 5 to push towards each other. In this way, a high clamping force is realized, which ensures a secure hold and good contact with the mounting rail or conductor rail to be connected. The thickened ends 11 . 12 can ensure a particularly secure hold in small recesses 17 in the areas of the contact tongues facing away from one another 4 . 5 intervention.

The contact tongues 3 . 4 are made in one piece from a sheet metal strip 7 made of conductive material, preferably copper sheet, which is bent in a U-shape in the area of the contact tongues, the contact tongues 3 . 4 - viewed from the direction of insertion for the busbar - form the two longitudinal legs of the U and the transverse leg through a wall section perpendicular to the contact tongues 8th is formed, which is the two contact tongues 3 . 4 connects with each other. The vertical wall section 8th thus takes over the support of the contact tongues 3 . 4 and replaces the rear loop-shaped section required according to the prior art 9 the generic DE OS 37 10 896.

The vertical wall section 8th has several key advantages. In particular, it makes it easy to develop the contact into a double connection that also meets demanding tests. In addition, it offers the possibility of one or more track sections 9 . 10 directly in the extension of the contact tongues 3 . 4 train.

To 1 or 2 is only on one of the two contact tongues 3 or 4 a busbar section 9 or 10 and in 2 is on both reeds 3 . 4 one of the busbar sections 9 . 10 formed.

In axial extension of the contact tongues 4 . 5 are perpendicular to the central area of the connecting side wall 8th Postage or cutouts 13 . 14 in which the omega-shaped spring 2 is inserted in its lateral rear area, so that the omega-shaped spring 2 from the side in a simple way on the contact spring 1 can be pushed on and defined on the contact spring 1 is fixed laterally. Behind the cutouts 13 . 14 are in the extension of the contact tongues 3 . 4 directly the busbar sections 9 . 10 ( 1 - 3 ) and / or the contact tongues 3 ' . 4 ' a second contact spring 1' ( 5 ) formable, which can be used to form a double contact.

4 shows the installation situation in an insulating housing 18 a terminal block shown here only in sections 19 where the connector contact from 1 for contacting the side edge 20 a mounting rail 21 is being used.

The connection shown can also be easily manufactured as a double connection. To do this, it is only necessary to use a contact spring instead of the busbars 1' with further contact tongues 3 ' . 4 ' behind the recesses 13 . 14 train. Admittedly, the two integrally connected contact springs could 1 . 1' two separate omega-shaped springs 2 . 2 ' be provided (not shown here). According to a particularly preferred variant, however, the two omega-shaped feet 2 . 2 ' integrally formed by being punched from a sheet, the back areas of the omega-shaped springs 2 over a footbridge 22 are connected to one another, which in particular improves or increases the assembly and the rigidity of the arrangement.

The two contact and spring springs 1 . 1'; 2 . 2 ' at the ends of the connection device facing away from one another can be of the same size or - as in 3 shown - be dimensioned differently and can therefore also be used in a simple manner for connecting busbars or other conductors of different thicknesses. So serves after 5 and 6 the left, larger contact spring 1 for contacting the edge area 20 the mounting rail 21 and the further, smaller contact spring for contacting a busbar 23 in an insulating housing.

To 7 is the upper contact tongue in the snap-on position 4 in the mouth area 6 sectionally parallel or almost parallel to a contacting busbar, in particular a mounting rail, aligned in order to facilitate snapping onto the mounting rail.

1, 1'

contact spring

2, 2 '

by spring

3, 3 '; 4, 4 '

contact tongues

5

contact zone

6

insertion mouth

7

metal strip

8th

wall section

9 10

Busbar sections

11 12

end up

13 14

recesses

17

wells

18

Insulated

19

terminal

20

edge

21

rail

22

web

23

conductor rail

Claims (14)

Connection device for contacting a conductor, in particular a busbar and / or mounting rail, with a) at least one double-expanding contact spring ( 1 ), b) the two opposing contact tongues ( 3 . 4 ), between which a contact zone ( 5 ) is formed, c) the contact springs ( 1 . 2 ) in the contact zone ( 2 ) on their sides facing away from each other from the free ends ( 11 . 12 ) a spring ( 2 ), characterized in that d) the contact tongues ( 3 . 4 ) to the contact tongues ( 3 . 4 ) vertical wall ( 8th ) are connected to each other, e) in such a way that the connection area of the two contact tongues ( 3 . 4 ) the contact spring ( 1 ) next to the back area ( 25 ) the spring ( 2 ) is arranged, f) being in the extension of the contact tongues ( 3 . 4 ) following recesses ( 13 . 14 ) for the spring ( 2 ) Conductor rail sections or further contact tongues ( 3 ' . 4 ' ) another contact spring ( 1' ) are trained. Connection device according to claim 1, characterized in that the over-spring ( 2 ) is omega-shaped. Connection device according to claim 2, characterized in that the over-spring ( 2 ) is designed as a stamped part. Connection device according to one of the preceding claims, characterized in that the contact spring ( 1 ) in one piece from a sheet metal strip ( 7 ) is made of conductive material that is in the area of the contact tongues ( 3 . 4 ) is bent in a U-shape, the contact tongues ( 3 . 4 ) - from the direction of insertion for the conductor rail ( 23 ) seen here - form the two longitudinal legs of the U and the cross leg through the wall section perpendicular to the contact tongues ( 8th ) is formed, which is the two contact tongues 3 . 4 connects with each other. Connection device according to one of the preceding Expectations, characterized in that the connection device as a single contact is trained. Connection device according to one of the preceding Expectations, characterized in that the connection device as a double contact is trained. Connection device according to one of the preceding claims, characterized in that the connection device has two contact springs and two springs ( 2 . 2 ' ) having. Connection device according to one of the preceding claims, characterized in that the side wall ( 8th ) as the back area of two integrally connected contact springs ( 1 . 1' ) is formed, each of one of the springs ( 2 . 2 ' ) are bordered. Connection device according to one of the preceding claims, characterized in that the two springs ( 2 . 2 ' ) in one piece in their back realm by means of a web ( 22 ) are connected. Connection device according to one of the preceding claims, characterized in that the free, thickened ends ( 11 . 12 ) in recesses ( 17 ) in the areas of the contact tongues facing away from each other 4 . 5 intervention. Connection device according to one of the preceding claims, characterized in that the two contact and over-springs ( 1 . 1'; 2 . 2 ' ) are dimensioned equally at the ends of the connection device facing away from each other. Connection device according to one of the preceding claims, characterized in that the two contact and over-springs ( 1 . 1'; 2 . 2 ' ) are dimensioned differently at the ends of the connection device facing away from one another. Connection device according to one of the preceding claims, characterized in that the upper contact tongue in the snap-on position ( 4 ) in the mouth area ( 6 ) is aligned in sections parallel or almost parallel to a busbar to be contacted. Terminal block with an insulating housing for snapping onto a mounting rail ( 21 ), characterized by a connection device according to one of the preceding claims.