SK106996A3 - Extensible communications switching installation - Google Patents

Abstract

The communications switching installation described is made up of several (2) modules containing the subscriber-line and junction-line circuits and their associated control unit plus coupling field. Each module (2) is, in itself, a complete communications switching installation. The base plate (1) can be fitted with a connection circuit board which connects all the modules (2) and which links the control units of the modules (2) to a common bus system and to the power supply. Another module (6) is connected as supply unit and can also be connected to the connection circuit board in order to allow the operating power to be fed in. The modules (2 and 6) can be designed as sheet metal housings, thus largely preventing magnetic fields radiating from them. The subscriber and junction lines are connected up by means of connection circuit boards which can also be mounted on the base plate and which are fitted with a contact plug for connection to a module (2).

Description

Expandable PBX

Technical field

The invention relates to an expandable PBX consisting of a wall cabinet for a plurality of building blocks which are interconnectable via a common linker, the linker being connected to a wall box base plate.

BACKGROUND OF THE INVENTION

Such a PBX is already known. German Offenlegungsschrift No. 40 39 502 discloses a wall cabinet for a small communication switchboard in which a pre-wiring connector is fastened to a base box of a wall cabinet. The individual assemblies are connected to each other via this pre-drilling connector via respective sockets. In a conventional wall cabinet, the individual assemblies are clad with a metal cabinet to achieve electromagnetic compatibility (EMC). Placing individual link lines in a common cabinet limits the possibilities of expanding a conventional communication switchboard.

SUMMARY OF THE INVENTION The object of the invention is to arrange a control panel of the kind mentioned in such a way that it is expandable.

According to the invention, this object is achieved by the fact that each group of connection lines and connections, including for a group of individual individual control devices, forms a closed metal housing module with a connection plug and other plugs, the power supply and control device connection is transferred via another plug to the bus. system, the cabinet has a base plate with a connecting line, the connection to the bus system and the power supply being provided through sockets for other plugs carrying the connecting line, whereby several modules can be connected to the connecting line.

SUMMARY OF THE INVENTION

Expandable PBX consisting of a wall cabinet for multiple building groups that are

Also interconnectable via a common linker, the linker being connected to the base plate of the wall cabinet, according to the connection group and the corresponding group / plug-shaped module and the other invention, in that for each connection line, including for an individual closed box control unit, the connection box, the power supply and the control device connection are made via another plug to the bus system, the wall cabinet has a base plate with a connector, the connection to the bus system and the power supply being made through sockets for other plugs carrying the connector, several modules can be connected.

By using completely self-contained modules thanks to the individual module control unit, the control panel can be easily expanded by adding additional modules.

The invention is illustrated, but not limited, by the following examples.

List of pictures

In FIG. 1 is a perspective axonometric view of the overall configuration In FIG. 2 is a perspective view of a base plate In FIG. 3 is a perspective view of a base plate with mounted conductor plates In FIG. 4 is a view of a busbar with a divider In FIG. 5 is a view of a busbar without a divider In FIG. 6 is a module in a perspective view

Examples

Modules 2 and 6 can be plugged onto the base plate 1, which is shown without busbars and connecting bars (Fig. 1). In the above embodiment, it is assumed that the base plate 1 is adapted to four modules 2. However, it is possible to imagine the base plate 1 for a plurality of modules. When the modules are plugged into the base plate 1, the whole group can be closed by inserting the cap 3. ·

Each module 2 contains, in terms of its function, all components for the construction of a separate control panel, for example for ordering long distance calls. This includes, for example, connecting and connecting lines, control devices and terminal blocks. For further construction of module 2, reference is made to P 43 42 740.5, so that a detailed description of the construction of modules 2 is not provided. The modules 2 and 6 are formed as closed metal cabinets, preferably made of sheet steel.

The module carries two plugs on the side facing the base plate 1, with one plug providing connection to the connection and connection circuits and a second plug providing connection to the bus system and power supply. Depending on the type of construction, it is now possible to insert up to four modules 2, in which case the base plate 1 can be used to extend an existing remote switching center if the other base unit 1 comprises at least one network module 6 whose dimensions correspond equally to the module 2. According to the arrangement, the control devices of the modules 2 can now carry out only control functions which relate to the module itself, but it is also conceivable that the control device of one module acts not only for the respective module but can also act for other modules, division of tasks for individual control devices. Thus, for example, one or more control devices used for connecting processes and a second non-connecting control device may be disposed on the marches. The communication between the controllers takes place via a bus system.

The base plate 1 shown in FIG. 2 is a one-piece embodiment and is made of an electrically non-conductive plastic. It is also conceivable to design this base plate of sheet steel.

On the base 26 of the base plate 1 there are a plurality of vein clamps 15 and cable clamps 16 (FIG. 2), which secure the cables passing through the cable glands 14, at the edge of the partition 21. The support tabs 17 of the base 26 serve as In order to accommodate the busbars, a space is provided between the underside of the linkers and the base 26 in which the cables can be laid. The busbars 7 lying on the mounting plates 17 are on one side held down by the projections 18 and on the other side by elastic clips 19 of corresponding shape (FIG. 3). In addition, a stop 31 serves to fasten each busbar 7. By pressing the spring clips 19, the busbar 7 can easily be removed from the base plate 1 again. The connector 8 is held similarly, lies on the other bearing surfaces 21 and is held down by the projections arranged on the partition 21, while retaining the other spring clips 22 on the opposite side. again.

The busbar 7 may be similar to the first busbar 4 provided with a divider 9, the connection between the divider 9 and the connection plug 12 being made by a corresponding conductor on the underside of the busbar. Externally connected connecting cables for the connecting and connecting lines are led through the cores from the interstices between the busbars 7 and are always laid on the divider 9 (FIG. 4).

If there is a separate divider outside the wall cabinet, it can lead the corresponding connection cable to the second busbar 5, whereby the cable is fastened to it by the corresponding clips 11.

Here, the cable 10 can be connected to the connection plug 12.

the busbar 5 must be unconditionally connected, it can be a plate instead of a module 2

In this case, the second need not be designed as a board with the corresponding dimensions printed (Fig. 5).

As already mentioned above, the network module 6 is also used. In this case, no busbar is required, since the network cable led by the cable gland 14 is connected directly to the network module 6.

The link 8 serves to supply power to the modules 2a for connection to the bus system. For this purpose, the connector 8 is provided with female connectors (not shown) which are arranged on the connector 8 for one module each so that they align with the respective connection plugs 12. The different height of the busbar 7 and the connector 8 is compensated by the connection plugs 12 being arranged so that the top side thereof is flush with the top side of the respective socket on the connector 8. The connector 8 is provided on both its sides with one connector 13, by means of which an electrical connection with the connector 8 of the adjacent base plate 1 is ensured.

The modules are to be connected to the connection sockets of the busbar 7 and to the corresponding connectors of the connector 8, respectively.

In the final position, the respective elastic clip 20 always engages in the opening 24 in the front wall 25 of the module 2. By deflecting the elastic clip 20, this fastening can be released again. Since the network module 6 has the same external construction as the module 2 (except for the missing connection plug), the network modules G are fastened by means of spring clips 20 in the manner described.

To attach the base plate 1 to the wall, the base 26 is provided with fixing holes 30. On the upwardly facing hooks 28, which are on the upside-down side of the base plate 1 when it is fixed to the wall, it is possible to hang the cap 3. the opposite side (bottom) of the base plate 1, which fits resiliently into the recess (not shown) in the cap 3.

Industrial usability

An expandable PBX consisting of a wall cabinet for a plurality of building blocks that can be connected to each other via a common linker, the linker being connected to the wall box base plate.

Claims (10)

PATENT CLAIMS An expandable PBX consisting of a wall cabinet for a plurality of building blocks interconnectable via a common linker, the linker being connected to a wall box base plate, characterized in that for each group of connection and connection lines, including a group the respective individual control device consists of a module (2) in the form of a closed metal box with a plug and other plugs, the power supply and the control device connection is transferred through another plug to the bus system, the wall cabinet has a base plate (1) with a connector (8); wherein the connection to the bus system and the power supply is provided via sockets for additional plugs which carry the connector (8), wherein several modules (2) can be connected to the connector (8). An expandable PBX according to claim 1, characterized in that the module (2) is designed as a network element (6). The extensible PBX according to claim 1 or 2, characterized in that the connector (8) has at least one side accessible to the connector (13), connectable to the connector of another directly adjacent to the arranged base plate (1). Extendable PBX according to claims 1 to 3, characterized in that for the module (2) there is an individual busbar (7) on the base plate (1) with a connection plug (12). Extendable PBX according to claims 1 to 4, characterized in that the busbar (7) has a divider (9) An expandable PBX according to claims 1 to 5, characterized in that the busbar (7) is held at a certain distance from the base (26) of the base plate (1) by projections (18) with resilient clips (19) fixed to the base (26). 26), while lying on the support surfaces (17). An expandable PBX according to claim 6, characterized in that vein clips (15) and cable clips (16) are arranged in the space between the busbar (7) and the base (26). The extensible PBX according to claims 1 to 7, characterized in that the linker (8) is held by further resilient clips (22) mounted on the base (26) while lying on the second receiving pads (27). The extensible PBX according to claims 1 to 8, characterized in that the connection plugs (12) align with the connectors of the connector (8) at the same height. Extendable PBX according to claims 1 to 9, characterized in that the module housing (2) is provided on both end walls (25) with one opening (24), which fits into the busbar (7) when the module (2) is plugged in. ) and a connector (8) an elastic clip (20) attached to the base (26).