DE10351479B4 - Device system with electrical equipment mounted on a mounting rail and BUS cable - Google Patents

Abstract

Device system, consisting of several electrical devices, which are detachably mounted on a mounting rail, preferably a top hat rail, and are electrically connected to one another via a bus line provided on the mounting rail for data and energy transmission, the electrical devices on the bus line Device contacts on the facing side and the BUS line have line contacts corresponding to these device contacts, characterized in that the BUS line consists of a plurality of BUS elements (20) which can be strung together and which on the side facing the device contacts (41, 51) extend in the longitudinal direction of the rail have extending, flat contact plates (21c) as line contacts and have plug springs pointing in the longitudinal direction of the rail on one end face and plug receptacles (21b) corresponding to the plugs (21a) on the opposite end face, the contact plates (21c) with the respective plugs (21a) and plug receptacles (21b) el are electrically connected, and that the device contacts (41, 51) of the electrical devices (30) on the contact plates (21c) of the BUS elements (20) are contact springs (41, 51) which are pretensioned.

Description

The invention relates to a device system referred to in the preamble of claim 1 Art.

Such systems consist of a number of electrical or electronic devices that are electrically connected to each other or to external supply, control and display devices via a bus, a so-called BUS line. Such device systems are preferably used in a control cabinet or distribution housing for electrical installations of building system technology or for the electrical installation of machinery or equipment in the industrial sector.

In order to enable a quick installation or a simple replacement of devices, mounting rails are preferably with U-shaped cross-section, so-called top hat rails, common to which the electrical devices are snapped with located at its base clamping and snap devices, as z. In DE 44 02 002 A1 is shown.

The electrical connection of these electrical equipment is used for all devices passing through BUS line, the contact of adjacent electrical equipment is made by means provided on the side surface of the housing BUS contacts or BUS terminals.

This arrangement has the disadvantage that the electrical connection is interrupted when one of the electrical devices mounted on the busbar is removed.

This problem will after the in DE 297 13 960 U1 described proposal achieved in that the BUS conductors are arranged in a separate base part on which the housing of the electrical device is placed and which is connectable to the mounting rail. This solution is quite expensive.

After another suggestion, as in DE 195 24 123 C1 is described, a collecting line is arranged in the DIN rail designed as a support rail, which has on the side facing the electrical devices in the rail longitudinal direction extending, slot-like openings, in which the individual conductors of a BUS line are arranged. The electrical devices have on their underside projecting contact pins, which dive when placing the electrical device on the support rail in the slot-like openings and get in contact with the conductors of the manifold. In this solution, the contact is not without problems, since the electrical devices are used in the usual construction of the clamping device about an axis extending in the longitudinal direction of the rail pivot. For this reason, both the contact pins of the electrical equipment and the slots of the busbar are arranged obliquely according to the pivoting path. Nevertheless, a relatively exact positioning of the device when mounting on the mounting rail is necessary. In addition, the contact elements, in particular the contact pins, are relatively susceptible.

As a further prior art, the DE 37 40 290 C2 and the DE 198 05 065 A1 called.

With the present invention, based on this solution, a more robust device system is to be created, which moreover has a high degree of variability.

This object is achieved with a device system characterized according to claim 1. In this device system, which has in a known manner mountable on a DIN rail electrical equipment, which are connected to one another via a bus bar provided on the BUS line, two modules are provided according to the invention substantially, which can be combined with each other in a variety of ways.

• 1. Aneinander reihbare BUS-Elemente zur Herstellung der BUS-Leitung. Diese BUS-Elemente weisen auf einer Stirnseite Steckerfedern und auf der anderen Stirnseite Steckeraufnahmen auf, so dass die BUS-Elemente aneinander steckbar sind. Außerdem besitzen sie auf ihrer der Geräteunterseite zugewandten Seite sich in Schienenlängsrichtung erstreckende, flächige Kontaktbleche, welche elektrisch mit den Steckerfedern bzw. Steckeraufnahmen verbunden, vorzugsweise mit diesen einstückig sind.
• 2. Vorzugsweise in Kontaktfederblöcken zusammengefasste Kontaktfedern, welche an der Unterseite der elektrischen Geräte angeordnet sind, wobei bei montierten elektrischen Gerten die Kontaktfedern unter Vorspannung auf den Kontaktblechen der BUS-Elemente aufliegen. Diese Konstruktion gestattet, die elektrischen Geräte problemlos auf die Tragschiene aufzusetzen bzw. von dieser abzuheben. Auch lassen sich die elektrischen Gerte entsprechend der Länge der Kontaktbleche der BUS-Elemente in Schienenlängsrichtung ohne Verlust des elektrischen Kontaktes verschieben.

These modules are:

• 1. Rectangular BUS elements for the production of the BUS line. These BUS elements have plug connectors on one end side and plug receptacles on the other end side, so that the BUS elements can be plugged together. In addition, they have on their underside facing the device side extending in the rail longitudinal, flat contact plates, which are electrically connected to the plug springs or plug receptacles, preferably with these in one piece.
• 2. Preferably in contact spring blocks summarized contact springs, which are arranged on the underside of the electrical equipment, wherein the electrical contact springs mounted contact springs under bias on the contact plates of the BUS elements. This design allows the electrical equipment easily put on the support rail or to lift it off. Also, the electrical devices according to the length of the contact plates of the bus elements in the rail longitudinal direction can be moved without loss of electrical contact.

Constructive embodiments of the BUS elements are the subject of claims 1 to 6.

After the proposal according to claim 7, the same BUS elements and the production serve an internal BUS line, via which device components of a single electrical device are connected to each other.

If the BUS elements according to claim 8 dimensioned so that they protrude on both sides of the device housing, can also be connected in a conventional manner individual adjacent devices electrically.

The configuration of the second module important for the invention, namely the so-called contact spring block, is the subject matter of claims 9 to 11.

In order to reduce the production costs, both BUS elements and the contact spring block, as proposed in claim 12, can be produced in insert technology.

According to this technique, the line sections of the BUS elements or the contact springs of the contact spring blocks are inserted in the form of a punched grid in the injection mold and molded with electrically insulating plastic, followed by the separation by means of a punching process for the preparation of the individual line sections or contact springs. This separation process can preferably take place within the injection mold or outside in a separate cutting tool.

The device system according to the invention can be varied manifold because of its modular structure with low production costs.

The BUS elements are adapted to the generally standardized housing dimensions. But they can also be combined with devices that have greater width. The contacting of the device contacts on the line contact surfaces allows easy assembly and disassembly, since the devices do not need to be positioned exactly.

In addition, let the BUS elements according to the invention realize a high level of insulation between the conductors of the BUS line, so that the BUS line is also suitable as a power bus for normal mains voltages up to 250 volts.

The object of the invention is explained below with reference to preferred embodiments, which are illustrated in the drawings, in detail. In the drawings show

1 perspective view of a top-hat rail into which the BUS line composed of BUS elements is inserted,

2 perspective view of individual parts of the BUS elements, namely

2.1 Upper part of the insulating body,

2.2 Line sections of the BUS element,

2.3 Lower part of the insulating body,

3 perspective view of the contact spring block and its individual parts according to a first embodiment, namely

3.1 Contact spring housing,

3.2 Middle part of the contact spring housing,

3.3 Contact springs,

3.4 End part of the housing,

3.5 complete contact spring block

4 to 6 Contact spring block according to a second embodiment, namely

4 perspective view of several juxtaposed contact spring blocks,

5 perspective view of a contact spring block with the cover removed,

6 Front view of the contact block according to 5 .

7 perspective view of a top-hat rail with BUS line and an electrical device to be placed on the DIN rail with the housing open and a contact spring block without contact spring housing mounted on the printed circuit board,

8th Detail A off 7 in an enlarged view,

9 perspective view of an electrical device with BUS elements according to the invention, which form internal BUS lines and with contact spring blocks shown open,

10 enlarged detail B off 9 .

11 Long section of a plurality of electrical devices, which are arranged in the form of individual plug-in modules in a common housing and are electrically connected to one another via inventive BUS elements,

12 enlarged detail C off 11 .

13 enlarged detail D off 11 .

14 Top view of two DIN-mounted electrical devices according to 11 , each consisting of four individual plug-in modules,

15 Longitudinal section of an electrical device in which the application of the inventive BUS elements for producing an external BUS line and for producing an internal BUS line is illustrated, wherein the contact spring blocks are shown without housing,

16 enlarged detail E off 15 and

17 enlarged partial section of an electrical device with the contact spring block according to 5 and 6 ,

In the following description, like parts are designated by like numerals.

1 shows a standard mounting rail, namely a DIN rail 10 according to IEC EN 60715. Such hat rails are used for the installation of electrical equipment for both industrial and domestic purposes.

For electrical connection of in 1 not shown device is inserted into the DIN rail, a BUS line according to the invention from individual BUS elements 20 is composed. On the left in 1 If such a BUS element is shown in the uninstalled state.

2 illustrates the items of this BUS element 20 , namely the insulating body consisting of electrically insulating material with upper part 22 and lower part 23 in which the line sections 21 are to be inserted. After inserting these line sections 21 in the lower part 23 becomes the shell 22 snapped, the lower part 23 undercut catch noses 22a of the top 22 provide a lock. The in guide bridges 23a of the lower part 23 engaging locking lugs 22a of the top 22 ensure accurate positioning.

The top 22 has breakthroughs 22c on, in which the contact plates 21c the line sections 21 are stored for a contact from above.

latch hook 25 at the in 2.3 left front side engage in coupling two BUS elements intended in notches 26 one, which are located in the area of the right front.

On both sides of the lower part 23 the insulating body provided springs 24 are supported during mounting in the DIN rail 10 (see. 1 ) on the inside of the vertical walls of the DIN rail 10 non-positively, leaving the bus elements 20 Although easy to assemble and disassemble and axially displaceable in the rail direction, but are adequately defined.

As 2.2 makes clear, the line ends 21 on one side in plugs 21a and on the opposite side in this corresponding, fork-shaped plug receptacles 21b , The plugs 21a are protected in the final assembled state of the insulating located in chambers, which through chamber walls 23b , the deck area 23c of the lower part 23 and the top surface 22d of the top 22 are limited. When two BUS elements are connected, the plug receptacles engage 21b in these chambers and include on both sides and electrically contact the plug 21a , guide webs 23d care together with the locking hooks 25 for easy coupling of adjacent BUS elements.

Another component which is important for the variability of the system according to the invention is the contact spring block 40 respectively. 50 as he is in the 3 respectively. 4 to 6 is shown. The contact spring block 40 respectively. 50 is the counterpart to the BUS elements 20 ,

In the embodiment according to 3 it consists of an electrically insulating contact spring housing 42 , in which the contact springs 41 inserted and in this with the also made of plastic middle part 43 and end part 44 are fixed. The contact springs 41 show at your in 3 bottom end contact surfaces 41a on which the mating contacts to the contact surfaces 21c the line sections 21 in the BUS element 20 represent.

At their upper ends are the contact springs 41 with right-angled solder pins 41b equipped, which the electrical connection z. B. serve on a circuit board. The contact springs 41 be after insertion in the Kontaktfedergehause 42 and the middle part 43 with the end part 44 set, wherein detents 44b at the end part 44 in the spring housing 42 engage with restraint.

On its outside has the end part 44 integrally molded mounting pins 44a , with which the contact spring block 40 on another electrical component, eg. B. a circuit board can be attached. The lower ends of the contact springs 41 are U-shaped so that they are spring loaded on the contact plates 21c the BUS elements can rest.

Improved contact allows the second embodiment of a contact spring block, as in the 4 to 6 is illustrated. In this contact spring block 50 are in contact spring housing 52 two approximately symmetrical contact springs 51 arranged, which at the bottom, the contact surface 51a having end U-shaped, with V-shaped centers 51b in laterally projecting solder pins 51c pass. The latter are in the upper part of the contact spring housing 52 inserted and through the aufzusetzenden cover 53 established.

On the bottom has the contact spring housing 52 a breakthrough 52a on, through which the lower ends of the contact springs 51 with their contact surfaces 51a protrude, with their outer ends at the inward edge 52b of the contact spring housing 52 support resiliently.

This design of the contact spring block allows larger spring travel than the spring training of the contact spring block 40 ,

With the 7 and 8th the application of the inventive bus elements for forming an external line bus is shown, with which electrical devices are interconnected. These electrical devices 30 have in known manner on their underside a clamping device with which they on the DIN rail 10 be snapped up. In the DIN rail 10 is the BUS line according to 1 arranged, which is composed of individual BUS elements.

The on a circuit board 33 arranged circuit of the electrical device 30 is with a contact spring block 40 connected. The contact spring block 40 , its contact springs 41 with the contact surfaces 41a sticking out, penetrates the breakthrough 34 of the device housing 31 ,

As especially the enlarged representation in 8th makes clear, come the contact surfaces 41a after placing and latching the electrical device 30 on the DIN rail 10 at the contact surfaces 21c the bus elements 20 to the plant. Because both the contact sheets 21c as well as the contact surfaces 41a have a certain extent in the long direction, it comes down to a very precise positioning of the electrical devices 30 on the DIN rail 10 not on. Rather, these devices can be moved to a limited extent in the rail longitudinal direction, without thereby affecting the electrical contact between the device 30 and the BUS line is impaired.

It is also possible to have one of several on the DIN rail 10 disassembled devices without interrupting the connection to the other devices.

The same BUS element 20 but with minor modifications can also be used to make an internal BUS line for the electrical equipment. This application is with the 9 and 10 illustrated.

As these show, are at the bottom of the electrical device between circuit board 33 such BUS elements 20 provided on which the contact springs 41 the contact spring blocks 40 lie electrically conductive. The contact spring block 40 in turn are with the solder pins 41b or fixing pins 44a and snap hooks 44c with the circuit boards 33 electrically conductive and mechanically connected.

Another application of the inventive BUS elements for the preparation of an internal BUS line, but which is led to the outside, is with the 11 to 14 illustrated.

Again, these are in the lower range of electrical appliances 30 BUS elements 20 intended. They are in the same way as based on 9 and 10 described, with the help of the contact spring blocks 40 electrically with the circuit of the circuit board 33 connected. To establish electrical connection to adjacent devices, the two-sided ends of the BUS elements pass through 20 breakthroughs 32 the device housing 31 so the plugs 21a a BUS element 20 with the plug receptacles 21b an adjacent BUS element 20 can be brought by lateral collapse of the devices in engagement.

In order to release a single device from a device group, in this case the devices must be at the joint on the DIN rail 10 be pushed apart, which is easily possible thanks to the inventive design of the BUS elements and the contact springs.

With the in the 15 and 16 The apparatus shown illustrates the application of the inventive bus elements for generating both an external and an internal BUS line.

The external BUS line is replaced by the one in the DIN rail 10 located BUS elements 20 formed, which the electrical connection of all electrical appliances 30 and other external supply and control devices.

The internal BUS line is formed by the in 15 and 16 overhead BUS elements 20 , These BUS elements can either be on the PCB 33 located device blocks are connected to each other or, if these bus elements, as in the 11 to 14 shown is from the device housings 31 led out to establish the connection to neighboring devices.

The electrical connection of the printed circuit board 33 to the BUS elements 20 takes place with the contact spring blocks described above 40 , An improved and more variable coupling is with the in the 4 to 6 illustrated contact spring blocks 50 possible, as can be seen from the sectional view in 17 evident. Such contact spring blocks 50 are in the lower part of the device housing 31 on the circuit board 33 attached and with their tracks by means of solder pins 51c electrically connected.

The two inside the spring house 52 located about V- or W-shaped contact springs 51 lie with their contact surfaces 51a springy on the contact surfaces 21c the one in the BUS element 20 arranged line sections 21 on. Because inside the spring housing 52 electrically non-interconnected contact springs 51 with own solder pins 51c are provided, the realization of two separate current paths is possible. For this purpose, the inside of the bus element 20 located line section 21 at 21d interrupted, so that the plug receptacles 21b with the top solder pin 51c and the plugs 21a with the solder pins below 51c electrically via the respective contact springs 51 are connectable.

The contact spring block 50 also offers the possibility of interrupted and uninterrupted BUS lines within a block or BUS element 20 to combine. For the not to interrupting bus line is in the contact spring block 50 only one of the two contact springs 51 mounted and in the BUS element 20 the interruption 21d omitted. As a result, for example, the combination of a power bus with continuous lines and a data bus with interrupted lines can be realized.

LIST OF REFERENCE NUMBERS

10

Support rail, DIN rail

20

BUS element

21

line section

21a

plug

21b

plug receptacle

21c

Contact sheet (or contact surface)

21d

interruption

22

Upper part of the insulating body

22a

locking lugs

22b

guide tabs

22c

breakthroughs

22d

cover surface

23

Lower part of the insulating body

23a

guide webs

23b

chamber walls

23c

Flat deck

23d

guide webs

24

feathers

25

latch hook

26

rest

30

electric device

31

casing

32

Openings of the device housing

33

circuit board

34

breakthrough

40

Contact spring block

41

contact springs

41a

Contact Flat

41b

solder pin

42

Contact spring housing

43

midsection

44

end

44a

fastening pins

44b

locking lugs

44c

snap hooks

50

Contact spring block

51

contact springs

51a

contact area

51b

centerpiece

51c

PC pins

52

Contact spring housing

52a

breakthroughs

52b

edge

53

cover

Claims (11)

Device system consisting of several electrical devices that are detachably mounted on a mounting rail, preferably a top hat rail, and electrically connected to each other via a provided on the mounting rail BUS line for data and energy transfer, the electrical equipment on the bus line facing side device contacts and the BUS line these device contacts corresponding line contacts have, characterized in that the BUS line of a plurality of mutually reihbare BUS elements ( 20 ), which on the device contacts ( 41 . 51 ) facing side extending in the longitudinal direction rail contact plates ( 21c ) have as line contacts and on a front side in the rail longitudinal direction facing plug springs and on the opposite end of the plugs ( 21a ) corresponding plug receptacles ( 21b ), wherein the contact sheets ( 21c ) with the respective plugs ( 21a ) and plug receptacles ( 21b ) are electrically connected, and that the device contacts ( 41 . 51 ) of electrical equipment ( 30 ) on the contact sheets ( 21c ) of the BUS elements ( 20 ) preloaded contact springs ( 41 . 51 ) are. Device system according to claim 1, characterized in that the BUS elements ( 20 ) of the BUS line in each case an insulating body ( 22 . 23 ) in which the out of line contact ( 21c ), Plug ( 21a ) and plug receptacle ( 21b ) existing one-piece pipe sections ( 21 ) are embedded. Device system according to claim 1 or 2, wherein the mounting rail is designed as DIN rail, characterized in that the width of the BUS elements ( 20 ) the clear width of the DIN rail ( 10 ) and the length of the BUS elements ( 20 ) of the housing width of the DIN rail ( 10 ) snap-on electrical appliances ( 30 ), the BUS elements ( 20 ) in the DIN rail ( 10 ) are displaceable in the longitudinal direction, but held non-positively. Device system according to claim 3, characterized in that the BUS elements ( 20 ) on both sides of the insulating body ( 23 ) with this one-piece springs ( 24 ), which on the DIN rail ( 10 ) under bias. Device system according to one of claims 1 to 4, characterized in that the plug receptacles ( 21b ) are fork-shaped and the plugs ( 21a ) of the fork-shaped plug receptacles ( 21b ) in the coupled state of two BUS elements ( 20 ) are covered on both sides, electrically conductive. Device system according to one of claims 1 to 5, characterized in that the BUS elements ( 20 ) in the region of a front side on both sides latching hook and in the region of the opposite end side of this latching hook ( 25 ) corresponding notches ( 26 ) for the releasable coupling of adjacent BUS elements ( 20 ). Device system according to one of claims 1 to 6, characterized in that the BUS elements ( 20 ) for the manufacture of an adjacent electrical appliance ( 30 ) connectable BUS line are usable, the device housing ( 31 ) opposing breakthroughs ( 32 ) through which the plugs ( 21a ) on the one hand and the plug receptacles ( 21b ) are passed on the other hand, and that the circuit of the electrical equipment ( 30 ) Contact springs ( 41 ), which are electrically conductive on the contact plates ( 21c ) of the components ( 20 ) rest. Device system according to one of claims 1 to 7, characterized in that the contact springs ( 41 ) for forming a contact spring block ( 40 ) in an insulating body ( 42 to 44 ) are embedded, which with these one-piece locking lugs ( 44b ) and snap hooks ( 44c ) for mounting the contact spring block ( 40 ) on a printed circuit board ( 33 ) of the electrical device ( 30 ), wherein solder pins ( 41b ) of the contact springs ( 41 ) the insulating body ( 42 to 44 ) near the detents ( 44b ). Device system according to claim 8, characterized in that in a contact spring housing ( 52 ) two contact springs ( 51 ) whose contact surfaces ( 51a ) on electrically non-interconnected areas of the line sections ( 21 ) of the BUS element ( 20 ) rest. Device system according to claim 9, characterized in that the contact springs ( 51 ) are bent approximately V-shaped and on the BUS element ( 20 ) side facing a U-shaped rounded arm on the contact plates ( 21c ) of the line sections ( 21 ), and on the opposite side solder pins ( 51c ) for the electrical connection. Device system according to one of claims 1 to 10, characterized in that the BUS elements ( 20 ) and / or the contact spring blocks ( 40 . 50 ) in insert technique, namely by encapsulation of the line sections ( 21 ) or the contact springs ( 41 . 51 ) forming stamped grid are made.

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