DE102010008536B4 - Electrical connection device - Google Patents

Abstract

An electrical connection device, comprising a first flat contact element (10) having a flat contact region (12) and a second flat contact element (24) having a flat contact region (26), wherein for connecting the contact region (12) of the first flat contact element (10) to the Contact region (26) of the second flat contact element (24) is a sleeve-shaped connecting element (34) is provided which in a contacting state of the contact region (12) of the first flat contact element (10) with the contact region (26) of the second flat contact element (24) the contact region (12) of the first flat contact element (10) and the contact region (26) of the second flat contact element (24) at least partially surrounds such that the contact regions (12, 26) lie substantially flat against each other, wherein for applying a contact force, the connecting element (34) at least two spring-trained finger elements (40), and the finger elements (40) are each provided on the connecting element (34) such that upon insertion of the contact region (12) of the first flat contact element (10) has a free end (44) of a finger element (40) from an interior (50) of the connecting element (34) is deflectable away, so that the contact region (12) of the first flat contact element (10) can be inserted into the connecting element (34).

Description

The invention relates to an electrical connection device, which can be used in particular for the transmission of high currents.

Such electrical connection devices can be designed, for example, as flat plug contacts or as round plug contacts, in which the contact point is essentially rotationally symmetrical.

From the DE 10 2008 009 357 A1 an electrical connection device in the form of a blade terminal contact is known, which has a flat contact with a contact tulip and a contact blade with a predetermined blade thickness, wherein the flat contact for receiving the contact blade with the predetermined blade thickness is suitable. A provided for contacting force is applied by a arranged on the contact tulip spring. The over-spring surrounds the contact tulip from the outside to ensure the required contact force can. The contact tulip has a plurality of contact fingers, in which the flat contact can be inserted. On the contact fingers of the contact tulip over-spring fingers of the over-spring are pushed to apply a contact force on the contact fingers and thus on the inserted contact blade. The contact tulip is formed such that it has a free opening dimension corresponding to the width of the contact blade. Only by the over-spring the appropriate Tulpenöffnungsmaß and thus the necessary contact force are set. The over-spring has the same number of finger pairs as the contact tulip. Due to the formation of a contact area as a contact tulip and the provision of a correspondingly formed contact tulip spring is a high manufacturing cost in the preparation of such a connection device necessary, which also due to the many individual components of such a connection device, a high degree of material is required.

From the EP 0 829 928 A2 is an electrical one. A connector housing is known, with a connection housing for a motor vehicle, to which at least two parts of the group comprising an integrated fuse, a connector, a diode and a short-circuit pin assembly and a similar part having contacts and tabs are attachable.

From the US 5 503 565 A a receptacle for power distribution systems for modular wall panels is known.

From the US 5 655 927 A a connection box from a vehicle power supply is known.

The object of the invention is therefore to provide an electrical connection device available, which is characterized by a reduced manufacturing cost, a lower cost of materials and thus by reducing the cost of production.

The object is achieved by the features of claim 1. Advantageous embodiments of the invention are specified in the dependent claims.

The electrical connection device according to the invention has a first flat contact element having a flat contact area and a second flat contact element having a flat contact area, a connecting element being provided for connecting the contact area of the first flat contact element to the contact area of the second flat contact element contacting state of the contact region of the first flat contact element with the contact region of the second flat contact element at least partially surrounds the contact region of the first flat contact element and the contact region of the second flat contact element, wherein for applying a contact force, the connecting element has at least two spring-trained finger elements.

The flat contact elements are preferably made of a conductive material, preferably copper. By means of the connecting element according to the invention, it is possible, two flat contact elements, each having a flat, d. H. Having substantially flat, trained contact area to be able to contact each other in a simple manner without a contact area of the two flat contact elements must be designed as a contact tulip. As a result, particularly flat trained connection devices can be realized, which only require a small space requirement. In addition, the production cost of such an electrical connection device can be substantially reduced. Furthermore, the connection device according to the invention is characterized by the provision of areal trained contact areas of the flat contact elements by simply formed contours, whereby the necessary in the manufacture of the connection device material requirements can be reduced, which in turn allows reduced manufacturing costs.

The connecting element is sleeve-shaped, so that in a contacting state, that is in the state in which the contact region of the first flat contact element makes contact with the contact region of the second flat contact element, at least partially surrounds or surrounds the contact regions of the two flat contact elements. For this purpose, the two flat contact elements are each introduced into the connecting element with their two contact areas, so that the flat contact elements can contact one another via their contact areas within the connecting element, in that the contact areas lie substantially flat against each other. The application of a contact force in order to be able to realize a sufficient contact between the two contact regions of the two flat contact elements is realized by at least two finger elements formed on the connecting element, in that these finger elements are resilient, so that they act on the contact regions of the flat contact elements introduced into the connecting element can apply a force by which the contact areas, preferably with one of their longitudinal side surfaces, can be pressed together. By providing at least two spring-trained finger elements, a sufficiently large contact force can be applied, which can be applied according to the formation of the finger elements on the connecting element targeted to the contact areas of the flat contact elements to ensure the safest possible contact, so that it is possible To transfer the highest possible currents during the contacting.

According to an advantageous embodiment of the invention, the connecting element has a front side and a rear side, wherein the finger elements are formed on the front side of the connecting element. The front side and the rear side of the connecting element are spaced from one another preferably parallel to each other and form an interior, which is bounded by the front and back of the connecting element, in which the two spring contact elements can be introduced with their contact areas for contacting. The rear side of the connecting element is preferably designed in the form of a closed surface. The front side, however, is preferably not formed in the form of a closed surface, but it preferably has one or more openings in the region where the at least two resiliently formed finger elements are formed. As a result, the resiliently formed finger elements are preferably provided on one and the same side of the connecting element, so that a uniform contact force can be applied from one side to the contact areas of the spring contact elements provided within the connecting element. The finger elements are preferably arranged parallel to one another on the front side of the connecting element, wherein in the contacting state the contact areas of the spring contact elements are clamped between the closed rear side and the finger elements provided on the front side in order to be able to ensure secure contacting.

The finger elements preferably each have a first end connected to the connecting element and a free second end opposite to the first end, wherein the finger elements are each inclined from their first end towards their second end in the direction of the interior of the connecting element. Characterized in that the finger elements each have a firmly connected end and a free end, the finger elements are resiliently formed by the free second end is pivotally mounted relative to the fixedly connected first end. By means of the free second end, the contact force of a finger element can be applied to the contact regions of the two spring contact elements. For this, the finger elements are formed biased and extend from its first end to its second end in the direction of the interior of the connecting element, so that when inserting the contact areas of the spring contact elements in the interior of the connecting element, the finger elements can be deflected against the spring force of the finger elements, thereby a sufficiently large contact force can be applied from the finger elements to the contact areas of the spring contact elements. The deflection of the finger elements during insertion of the contact regions of the spring contact elements in the interior of the connecting element takes place in this case directed away from the interior of the connecting element.

According to a further advantageous embodiment of the invention, the finger elements are provided on the connecting element such that they are in the direction of insertion of the contact area of the first flat contact element are deflectable in the connecting element. When inserting the contact region of the first flat contact element, the free end of a finger element is preferably deflected or bent away in the insertion direction of the contact region of the first flat contact element away from the interior of the connecting element, so that the contact region of the first flat contact element can be inserted into the connecting element and preferably between the contact region of the second flat contact element and the finger elements of the connecting element can be inserted. The fact that the finger elements are provided on the connecting element such that they can be deflected in the insertion direction of the contact region of the first flat contact element in the connecting element, only relatively small insertion forces are necessary when inserting the contact region of the first flat contact element in the connecting element, since the finger elements of the connecting element open such that a force component in the insertion direction or in the insertion direction of the contact region of the first flat contact element shows. Thereby, both the plugging and the removal of a spring contact element can be facilitated, whereby the ease of use of the electrical connection device is increased.

The contact region of the first flat contact element preferably has at least two contact fingers, wherein in the contacting state, the contact fingers are preferably in contact with the finger elements of the connection element. The areally formed contact region of the first flat contact element is preferably designed like a lamella in the form of the at least two contact fingers, in that the preferably flat surface of the contact region of the first flat contact element has a plurality of slot-shaped openings for forming the contact fingers. When inserting the contact region of the first flat contact element into the interior of the connecting element, the contact fingers of the contact region of the first flat contact element preferably slide along the finger elements of the connecting element. Preferably, the finger elements of the connecting element are arranged to the contact fingers of the contact region of the first flat contact element such that they overlap in the contacting state, so that in the contacting state, the finger elements can apply a contact force directly on the contact fingers of the first flat contact element, which in turn has the contact force can transmit the contact region of the second flat contact element. By the sliding of the contact fingers along the finger elements during insertion and also again pulling out of the contact region of the first flat contact element of the connecting element, a smooth insertion without high expenditure of force is possible. In addition, by forming two or more contact fingers on the contact region of the first flat contact element, a plurality of contact points can be made available, whereby the necessary contact force for contacting the two contact regions of the two flat contact elements can be reduced.

Furthermore, it is preferably provided that the number of finger elements of the connecting element corresponds to the number of contact fingers of the contact area of the first flat contact element. This makes it possible to apply as uniform a contact force as possible to the contact areas of the flat contact elements to be contacted.

Advantageously, the contact fingers each have a free end, wherein the free end has beveled edge regions. The free end of the contact fingers is the area over which the contact fingers are inserted into the connecting element, and thus the area of a contact finger, which first slides along a finger element of the connecting element. Characterized in that these free ends of the contact fingers have beveled edge regions, the insertion of the contact region of the first spring contact element can be facilitated in the connecting element. The contact fingers preferably have both at the edge regions of the underside and the top of a contact finger bevelled surfaces, so that when inserting the contact fingers in the connecting element, the contact fingers both along the preferably already inserted into the connecting element contact area of the second flat contact element and along the finger elements be pushed or can slide along these surfaces. As a result, the forces necessary for introducing the contact region of the first flat contact element can be reduced. The bevelled edge regions may be formed, for example, in the form of a chamfer or in the form of rounded edges.

The contact region of the second flat contact element preferably has a curvature directed in the contacting state in the direction of the contact region of the first flat contact element. Because the curvature is aligned in the contacting state in the direction of the contact region of the first flat contact element, the curvature is preferably designed such that it implements the contacting of the contact region of the second flat contact element with the contact region of the first flat contact element. The curvature preferably extends in its length transversely to the longitudinal orientation of the contact fingers of the contact region of the first flat contact element, so that the curvature extends over the entire width of the contact region of the first flat contact element and thus over all formed on the contact region of the first flat contact element contact fingers, creating a safe and uniform contact between the contact areas of the flat contact elements are guaranteed. The curvature is preferably formed in the form of a wave of the flat formed contact region of the second flat contact element. The contact fingers of the contact region of the first flat contact element preferably contact the contact region of the second flat contact element directly in the region of the curvature. The provision of a curvature has the advantage over a completely flat contact surface, that in this case tolerances and angular offsets between the contact region of the first flat contact element and the Contact region of the second flat contact element can be compensated, so that a clear contact between the contact regions of the two flat contact elements can be ensured.

The contact region of the second flat contact element preferably has a free end, on which a chamfer is formed. The bevel is preferably formed on the edge region of the contact region of the second flat contact element, along which the first flat contact element can be pushed with its contact region on the contact region of the second flat contact element. The chamfer is preferably formed at the edge region of the free end, in that the edge region or the edge of the edge region is chamfered or rounded. As a result, the insertion of the contact region of the second flat contact element relative to the contact region of the first flat contact element and / or to the connecting element can be simplified.

Furthermore, it is preferably provided that the connecting element is formed from an insulated material. The connecting element is preferably made of a non-conductive material, so that the connecting element is not used for the transmission of flowing currents, but only for applying a contact force to the contact areas of the spring contact elements.

For applying a contact force to the contact regions of the spring contact elements, it is preferably provided that the connecting element is formed of a resilient material. The connecting element is preferably made of a spring steel.

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

Show it:

1 a schematic perspective view of the electrical connection device according to the invention in a non-contacting state in a front view;

2 a schematic perspective view of in 1 shown electrical connection device according to the invention in a contacting state;

3 a schematic perspective view of in 1 shown electrical connection device according to the invention in a contacting state in a rear view; and

4 a schematic representation of in 2 shown inventive electrical connection device in a plan view.

1 shows an inventive electrical connection device in a kind of exploded view with a first flat contact element 10 which has a flat trained contact area 12 which has five contact fingers 14 having. The contact fingers 14 are just trained and means in the contact area 12 provided slot-shaped openings 16 separated from each other, with the individual contact fingers 14 parallel to each other and have the same length to each other. The contact fingers 14 are at a first end 18 fixed to the flat contact element 10 connected. The first end 18 opposite are the contact fingers 14 one free second end each 20 on, with this free second end 20 at its edge areas 48 , both on the front and on the back of a contact finger 14 having bevelled surfaces. Furthermore, on the first flat contact element 10 several solder pins 22 formed, via which the first flat contact element 10 For example, on a circuit board, not shown here, can be arranged.

1 further shows a second flat contact element 24 which has a flat trained contact area 26 wherein the area formed contact area 26 is formed as a one-piece surface, along which in the form of a wave, a curvature 28 is trained. The vault 28 extends in its length transverse to the longitudinal orientation of the contact fingers 14 of the contact area 12 of the first spring contact element 10 , Adjacent to the contact area 26 has the second flat contact element 24 a conductor connection area 30 on, which is formed in the embodiment shown here in the form of a tongue on which, for example by means of a clamping sleeve system, not shown, a conductor can be connected. Furthermore, a conductor connection by spring force or other conductor connection systems is also possible here. Between the conductor connection area 30 and the contact area 26 is also a Leiterdurchsteckschutz 32 provided, which is formed in the form of a web, which at an angle, preferably at an angle of 90 °, to the contact area 26 the second flat contact element 24 is trained.

For connecting the contact area 12 of the first flat contact element 10 with the contact area 26 the second flat contact element 24 is a connecting element 34 provided, which is sleeve-shaped and in the contacting state shown here, the contact area 12 of the first flat contact element 10 and the contact area 26 the second flat contact element 24 at least partially encloses. The connecting element 34 has a front 36 and a back 38 on, being between the front 36 and the back 38 an interior 50 is formed in the form of a cavity in which the contact areas 12 . 26 the flat contact elements 10 . 24 can be inserted for contacting. The backside 38 is formed as a closed surface. The front 36 has one through a border 52 trained opening 54 on, being at the border 52 finger elements 40 are formed, which are different from the border 52 in the opening 54 extend into it. The border 52 is along the peripheral surface of the front 36 of the connecting element 34 educated. The finger elements 40 are resilient and each have a on the border 52 the front 36 tailed first end 42 and the first end 42 opposite second free end 44 on, with the finger elements 40 each from their first end 42 towards her second end 44 in the direction of the interior 50 of the connecting element 34 are formed inclined.

In 2 - 4 the connection device according to the invention is shown in a contacting state, wherein the contact area 12 of the first flat contact element 10 and the contact area 24 the second flat contact element 26 in the interior 50 of the connecting element 34 is introduced. To transfer one, as in 1 shown, non-contacting state in one, as in 2 - 4 shown, contacting state is preferably first the contact area 26 the second flat contact element 24 in the connecting element 34 inserted, preferably such that the contact area 26 in the interior 50 at the back 38 of the connecting element 34 is applied. Subsequently, the contact area 12 or the contact fingers 14 of the first flat contact element 10 between the contact area 26 the second flat contact element 24 and the finger elements 40 of the connecting element 34 inserted, in which case the contact fingers 14 along the finger elements 40 of the connecting element 34 slide, so that they are arranged one above the other in the contacting state. When inserting the contact fingers 14 in the connecting element 34 become the finger elements 40 in the insertion direction of the contact finger 14 in the connecting element 34 with her free end 44 from the interior 50 of the connecting element 34 deflected away, leaving them in contact with each other 14 open to the contact fingers 14 of the contact area 12 of the first flat contact element 10 to be able to record.

In the embodiment shown here corresponds to the number of contact fingers 14 the number of finger elements 40 of the connecting element 34 , In the contacting state are the contact fingers 14 on the vault 28 of the contact area 26 the second flat contact element 24 to ensure a secure contact. For simplified insertion of the contact area 12 of the first flat contact element 10 along the contact area 26 the second flat contact element 24 indicates the contact area 26 at its free end 56 a chamfer 46 on, by means of which the insertion of the contact area 26 can be simplified by, for example, the beveled edge areas 48 the contact finger 14 over the chamfer 46 of the contact area 26 the second flat contact element 24 can slide.

In 3 is the in 2 shown inventive electrical connection device shown in a rear side view, wherein the connecting element 34 with his back 38 is shown. The backside 38 is formed here by means of puzzle-shaped punched out closed. The connecting element 34 is preferably made of a resilient metal strip which is bent in such a box-shaped that it is on the back 38 can be closed by means of this puzzle-shaped punching shown here and so one through the front 36 and the back 38 formed interior 50 formed.

4 shows a plan view of the in 2 and 3 shown electrical connection device in the contacting state, in which case the orientation of the finger elements 40 from the first end 42 towards their second end 44 with a slope towards the interior 50 of the connecting element 34 to a contact force on the introduced into the connecting element contact areas 12 . 26 the flat contact elements 10 . 24 to be able to apply is recognizable. In addition, it can be seen here that the electrical connection device according to the invention is characterized by a particularly flat configuration, whereby it can be used in particular where only a small space is available.

The spring contact elements 10 . 24 as well as the connecting element 34 may be arranged in an insulating housing, not shown here, for example, a desired positioning and alignment of the spring contact element 10 . 24 and the connecting element 34 to ensure each other.

LIST OF REFERENCE NUMBERS

10

First flat contact element

12

contact area

14

contact fingers

16

opening

18

First end

20

Second end

22

solder pin

24

Second flat contact element

26

contact area

28

bulge

30

Solder contacts

32

Head-through protection

34

connecting element

36

front

38

back

40

finger member

42

First end

44

Second end

46

chamfer

48

border area

50

inner space

52

border

54

opening

56

Free end

Claims (10)

Electrical connection device, having a flat contact area ( 12 ) having first flat contact element ( 10 ) and a flat trained contact area ( 26 ) having second flat contact element ( 24 ), wherein for connecting the contact area ( 12 ) of the first flat contact element ( 10 ) with the contact area ( 26 ) of the second flat contact element ( 24 ) a sleeve-shaped connecting element ( 34 ) is provided, which in a contacting state of the contact area ( 12 ) of the first flat contact element ( 10 ) with the contact area ( 26 ) of the second flat contact element ( 24 ) the contact area ( 12 ) of the first flat contact element ( 10 ) and the contact area ( 26 ) of the second flat contact element ( 24 ) at least partially encloses such that the contact areas ( 12 . 26 ) lie substantially flat against each other, wherein for applying a contact force, the connecting element ( 34 ) at least two spring-trained finger elements ( 40 ), and the finger elements ( 40 ) in each case on the connecting element ( 34 ) are provided that when inserting the contact area ( 12 ) of the first flat contact element ( 10 ) a free end ( 44 ) of a finger element ( 40 ) from an interior ( 50 ) of the connecting element ( 34 ) is deflectable away so that the contact area ( 12 ) of the first flat contact element ( 10 ) in the connecting element ( 34 ) can be inserted. Electrical connection device according to claim 1, wherein the connecting element ( 34 ) a front side ( 36 ) and a back ( 38 ), wherein the finger elements ( 40 ) on the front side ( 36 ) of the connecting element ( 34 ) are formed. Electrical connection device according to one of the preceding claims, wherein the finger elements ( 40 ) each one on the connecting element ( 34 ) connected first end ( 42 ) and the first end ( 42 ) opposite second end ( 44 ), which has the free end ( 44 ), wherein the finger elements ( 40 ) each from its first end ( 42 ) towards its free second end ( 44 ) in the direction of an interior ( 50 ) of the connecting element ( 34 ) are inclined. Electrical connection device according to one of the preceding claims, wherein the contact region ( 12 ) of the first flat contact element ( 10 ) at least two contact fingers ( 14 ), wherein in the contacting state, the contact fingers ( 14 ) touching the finger elements ( 40 ) of the connecting element ( 34 ). Electrical connection device according to claim 4, wherein the number of finger elements ( 40 ) of the connecting element ( 34 ) the number of contact fingers ( 14 ) of the contact area ( 12 ) of the first flat contact element ( 10 ) corresponds. Electrical connection device according to claim 4 or 5, wherein the contact fingers ( 14 ) each have a free end ( 20 ), wherein the free end ( 20 ) bevelled edge areas ( 48 ) having. Electrical connection device according to one of the preceding claims, wherein the contact region ( 26 ) of the second flat contact element ( 24 ) one in the contacting state in the direction of the contact area ( 12 ) of the first flat contact element ( 10 ) directed curvature ( 28 ) having. Electrical connection device according to one of the preceding claims, wherein the contact region ( 26 ) of the second flat contact element ( 24 ) has a free end at which a chamfer ( 46 ) is trained. Electrical connection device according to one of the preceding claims, wherein the connecting element ( 34 ) is formed of an insulating material. Electrical connection device according to one of the preceding claims, wherein the connecting element ( 34 ) is formed of a resilient material.

Images