DE202016101995U1 - Device for electrically conductive connection of an electronics unit with a mounting rail and electronic device with an electronic unit and such a device - Google Patents

Abstract

Device for the electrically conductive connection of an electronics unit to a mounting rail (2), wherein the device comprises a contact element and a contact terminal, which are electrically conductively connected to each other, wherein the electronics unit in a housing (5) of an electronic device (1) is arranged and the Support rail (2) at least one leg (3, 4), wherein the contact element with the electronic unit and the contact terminal with a leg (3, 4) of the support rail (2) is electrically conductively connected, characterized in that the contact element as a spring clip ( 12) at least one spring tab (13) is formed, which accommodates the electronics unit partially in the installed position of the device (10).

Description

The invention relates to a device for electrically conductive connection of an electronic unit with a mounting rail, wherein the device comprises a contact element and a contact terminal, which are electrically conductively connected to each other, wherein the electronic unit is arranged in a housing of an electronic device and the support rail has at least one leg wherein the contact element with the electronic unit and the contact terminal with a leg of the support rail is electrically conductively connected.

Furthermore, the invention relates to an electronic device for placement on a mounting rail with at least one leg, wherein the electronic device has a housing in which an electronic unit is arranged.

Electronic devices for placement on a mounting rail, in particular a so-called DIN rail, have long been known and are used in various embodiments and for various purposes. Similar to electrical terminal blocks, which are usually also snapped onto mounting rails, such electronic devices have at least two conductor connection elements, being used as a conductor connection elements predominantly screw or spring terminals.

A device with the features of the protection claim 1 and an electronic device with the features of the protection claim 11 are made DE 10 2009 008 386 B4 known. The contact element between an electronic unit and a support rail forming device is preferably formed integrally as a metal stamped part and has a web-like contact element with solder pins, which are electrically connected by means of a solder connection to the electronic unit. It is thus necessary to solder the contact element in the region of the solder pins for producing an electrically conductive connection with the electronics unit, which makes the production or assembly expensive.

The object of the invention is to improve a device described above so that their assembly is simplified and their properties are generally improved.

This object is achieved in a device of the type described in the present invention, characterized in that the contact element is designed as a spring clip with at least one spring tab which accommodates the electronics unit partially in the installed position of the device.

The device thus requires no solder joint, but the connection between the contact element and the electronics unit is effected in a simple manner that the electronics unit is inserted during assembly with its electrical contact area in the formed as a spring terminal contact element and thus reliably contacted. A soldering process is therefore not required.

In a particularly preferred embodiment, it is provided that the device is formed in one piece, which simplifies the production. Basically, of course, a multi-piece training is possible.

In a further advantageous embodiment, it is provided that the contact terminal is formed at least partially sharp-edged, the sharp-edged area contacted in mounting position of the device a leg of the support rail. If the electronic device with the device on a mounting rail, in particular a DIN rail, plugged or pushed, the sharp-edged area is used, e.g. penetrate any oxide layers on the rail and to ensure a perfect electrical contact.

In a particularly preferred embodiment it is provided that the contact terminal has a first and a second contact arm, wherein the second contact arm has a first web and a second web, which are connected to a substantially C-shaped configured connecting element. In this case, the first contact arm preferably extends substantially transversely to a longitudinal direction of the first web of the second contact arm. The overall C-shaped second contact arm thus engages around the hat or mounting rail, so that both the free end of the first contact arm and the second contact arm come into contact with the bearing on the mounting rail.

In this embodiment, it is preferably provided that at least the first contact arm has the sharp-edged region, which is e.g. Any oxide layers can penetrate the top hat rail.

Particularly preferably, it is provided that the second contact arm is formed at least two layers. Due to this two-layer design, the contact arm has two contact surfaces to the mounting rail, which favors a secure contact.

In order to achieve the two-ply, it is preferably provided that the first web of the second contact arm has at least one bending edge. The second contact arm is then formed approximately symmetrically to the bending edge and two layers around the Bending edge bent. Through this two-ply training in conjunction with the C-shape, the contact terminal on the one hand resilient properties that allow a resilient clamping on the mounting rail, but on the other hand, a sufficient basic stiffness and robustness.

In order to realize these different wall thickness ranges, it may alternatively also be provided that the device is used e.g. is formed from a profile band with different wall thickness ranges, wherein the wall thickness of the second contact arm is greater than the de spring tab. Alternatively, a uniform material thickness can also be provided.

Furthermore, it is preferably provided that a transverse web is arranged with a locking tab on the second web of the second contact arm. The locking tab serves to secure the device to the housing of the electronic device after the device has been inserted. In this case, the locking tab protrudes through an opening in the housing to the outside and by turning its free end, the device is connected to the housing.

The invention also relates to an electronic device for placement on a mounting rail with two legs, wherein the electronic device has a housing in which an electronic unit is arranged. In this case, the electronic unit on a device of the type described above.

The invention is explained in more detail below by way of example with reference to the drawing. This shows in

1 a mounted on a mounting rail electronic device with weggelas senem housing cover,

2 the electronic device after 1 with housing cover,

3 the electronic device after 1 and 2 from behind,

4 an enlarged detail of the 3 .

5 a perspective view of a first embodiment of the front direction,

6 a punching blank for the device according to 5 before bending and

7 a perspective view of a second embodiment of the device according to the invention.

In the 1 to 4 is a common with 1 designated electronic device shown. This electronic device 1 is on a mounting rail 2 snapped.

The mounting rail 2 has two outwardly facing legs 3 . 4 on. Such a mounting rail 2 is generally referred to as DIN rail, wherein the inventive electronic device 1 Not only for such hat rails, but for example, for C-shaped, G-shaped and flat mounting rails or PCBs can be used. The electronic device 1 has a housing 5 on, which may consist of two housing halves, for example, wherein a housing half a in 1 not shown housing cover 6 is.

Inside the case 5 an electronic unit is arranged, which in the example shown from a printed circuit board 7 with thereon arranged electronic components. The electronic device 1 has at its two end faces conductor connection elements 8th on, which may be formed, for example, as screw terminals. Alternatively, the conductor connection elements 8th also be designed in a different connection technology, for example as tension spring terminals or plug-in spring terminals. The individual conductor connection elements 8th are arranged in the embodiment in several rows stepped stacked one above the other. To generate an electrically conductive connection between the circuit board 7 or one on the circuit board 7 arranged conductor track and the mounting rail 2 is in the foot area 9 of the housing 5 a device according to the invention 10 arranged, which will be described in more detail below.

The device 10 persists in the embodiment 5 and 6 from a single punched, electrically conductive metal part, this punched blank 11 will be out of the 6 illustrated flat stamped position in the device 10 according to 5 bent.

For electrical contacting of the device 10 with the circuit board 7 has the device 10 First, a contact element, which as a spring clip 12 is trained. The spring clamp 12 is in adaptation to the thickness of the circuit board 7 dimensioned, so that in each case an electrical contact of the spring clip 12 in the area of at least one spring tab 13 is guaranteed. The electrical contact between the device 10 and the electronics unit 7 is thus made in a simple manner by the fact that the device 10 with the spring clip 12 on the circuit board 7 is postponed. The spring clamp 12 can also have two spring tabs.

The device 10 also indicates contacting the DIN rail 2 or a thigh 3 or 4 (in the 1 to 4 the Contacting the thigh 4 ) A contact terminal, which in the embodiment a first contact arm 14 and a second contact arm 15 having. The first contact arm 14 is essentially rigid and connects to the spring clip 12 at. In this case, the first contact arm 14 at its free end a sharp-edged area 16 on which serves, when plugging or pushing the device 10 on the mounting rail 2 eg any oxide layers on the mounting rail 2 or their thighs 3 or 4 to penetrate and to ensure electrical contact.

The second contact arm 15 the device 10 has a first footbridge 17 and a second jetty 18 on, which via a substantially C-shaped ausgestaltetes connecting element 19 are integrally connected to each other. Due to the C-shaped design of the contact element, this is resilient and can thus be easily attached to the respective leg 4 (or 3 ) of the mounting rail 2 Fasten.

At the second jetty 18 the second contact arm is a crosspiece 20 with a side locking tab 21 arranged. In mounting position, this locking tab engages 21 through a slot-shaped opening 22 of the housing 5 of the electronic device 1 to the outside and is freiendseitig bent over to the outside, as best of 4 can be seen.

It is preferably provided that the second contact arm (webs 17 . 18 and fasteners 19 ) have a greater wall thickness than the first contact arm 14 and the spring clip 12 ,

This is according to the embodiment 5 and 6 provided that the second contact arm is formed in two layers. This is the punching blank 11 one at the first footbridge 17 adjacent bending edge 23 formed substantially symmetrical, ie both the first web 17 as well as the second footbridge 18 as well as the connecting element 19 and the crossbar 20 are formed in two layers. The punched blank 11 therefore points symmetrically to the bending line 22 the aforementioned elements, these elements are in the 6 denoted by the suffix "a" or "b". Only the locking tab 21 is single-layered, ie only at the crosspiece 20b molded to ensure easy turning for locking.

The device 10 to 5 and 6 is thus formed as a stamped and bent part. To increase the wall thickness in the region of the contact element, the contact element is formed in two layers in the manner described above.

In 7 is an alternative embodiment of the device 10 illustrated, wherein the same reference numerals as in the preceding figures are related. In contrast to the embodiment according to 5 and 6 is the device 10 formed from a profile band with different wall thickness ranges, wherein the wall thickness of the second contact arm (first web 17 , second footbridge 18 , Connecting element 19 and crossbar 20 ) is greater than the wall thickness of the first contact arm 14 and the spring clip 12 , Otherwise, the device is different 10 to 7 Not.

Of course, the invention is not limited to the illustrated embodiments. Further embodiments are possible without departing from the basic idea. Thus, the device according to the invention is suitable 10 not only for contacting a DIN rail, but also, for example, for C-shaped or G-shaped support rails, flat strips, circuit boards and the like.

LIST OF REFERENCE NUMBERS

1

electronic device

2

rail

3, 4

Leg of the mounting rail

5

casing

6

housing cover

7

circuit board

8th

Conductor connection elements

9

footer

10

contraption

11

punched blank

12

spring clip

13

spring shackle

14

first contact arm

15

second contact arm

16

sharp-edged area

17, 17a, 17b

first jetty

18, 18a, 18b

second bridge

19, 19a, 19b

connecting element

20, 20a, 20b

crosspiece

21

locking tab

22

opening

23

bending edge

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102009008386 B4 [0004]

Claims (11)

Device for the electrically conductive connection of an electronics unit to a mounting rail ( 2 ), wherein the device comprises a contact element and a contact terminal, which are electrically conductively connected to each other, wherein the electronic unit in a housing ( 5 ) of an electronic device ( 1 ) is arranged and the mounting rail ( 2 ) at least one leg ( 3 . 4 ), wherein the contact element with the electronic unit and the contact terminal with a leg ( 3 . 4 ) of the mounting rail ( 2 ) is electrically conductively connectable, characterized in that the contact element as a spring clip ( 12 ) at least one spring tab ( 13 ) is formed in the installed position of the device ( 10 ) partially accommodates the electronics unit. Device according to claim 1, characterized in that the device ( 10 ) is integrally formed. Apparatus according to claim 1 or 2, characterized in that the contact terminal is formed at least partially sharp-edged, wherein the sharp-edged area ( 16 ) in the installation position of the device ( 10 ) a thigh ( 3 . 4 ) of the mounting rail ( 2 ) contacted. Apparatus according to claim 3, characterized in that the contact terminal a first contact arm ( 14 ) and a second contact arm ( 15 ), wherein the second contact arm ( 15 ) a first bridge ( 17 ) and a second bridge ( 18 ), which with a substantially C-shaped connecting element ( 19 ) are connected. Device according to claim 4, characterized in that the first contact arm ( 14 ) substantially transversely to a longitudinal direction of the first web ( 17 ) of the second contact arm ( 15 ). Device according to claim 4 or 5, characterized in that at least the first contact arm ( 14 ) a sharp-edged area ( 16 ) having. Device according to one or more of claims 4 or 5, characterized in that the second contact arm ( 15 ) is formed at least two layers. Apparatus according to claim 7, characterized in that the first web ( 17 ) of the second contact arm ( 15 ) at least one bending edge ( 23 ) having. Device according to one or more of claims 3 to 6, characterized in that it is formed from a profile band with different wall thickness ranges, wherein the wall thickness of the second contact arm ( 15 ) larger than that of the spring tab ( 13 ). Device according to one or more of claims 4 to 9, characterized in that on the second web ( 18 ) of the second contact arm ( 15 ) a crossbar ( 20 ) with a locking tab ( 21 ) is arranged. Electronic device for mounting on a mounting rail with at least one leg, wherein the electronic device has a housing ( 5 ), in which an electronic unit is arranged, characterized in that the electronic unit comprises a device ( 10 ) according to one or more of claims 1 to 10.

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