DE102009015642A1 - Suction device with function module - Google Patents

Abstract

The invention relates to a suction device (10) for separating particles from a suction flow (13), with a suction motor (12) for generating the suction flow (13) and with a control wall (23) for operating (11). In the suction device (10) it is provided that on the operating wall (23) at least one module receptacle (30) for receiving at least one electrical and / or optical and / or acoustic function providing functional module (50a-50d) is arranged that on Module receptacle (30) an electrical connection arrangement (41) for an electrical connection of the at least one functional module (50a-50d) to the suction device (10) is arranged, and that the at least one functional module (50a-50d) by means of connecting means (52) with the Suction cup (11) is detachably connectable. The invention further relates to a functional module (50a-50d) for the suction device (10).

Description

The The invention relates to a suction device for separating particles from a suction flow, with a suction motor for generating the suction flow and with a control wall for operating the suction device having suction cup.

Such a suction device is for example off DE 101 30 995 known. At the front of the suction device, a control wall for operating the suction device is provided, which is not shown in detail in the drawing of the aforementioned document.

A Such control wall usually has an on-off switch for Switching the suction device on and off. Furthermore, can other control elements, for example for speed adjustment of the suction motor, be provided at this point. Used in the workshop area Suction units often still have a socket for Connecting an electrical tool. The functional scope of the suction device is set, however.

It is therefore the object of the present invention, a flexible Adjustment of a functional range of a suction device to allow.

to Solution of the problem is in a suction device of provided in the aforementioned type that on the operating wall at least a module receptacle for receiving at least one of an electrical and / or optical and / or acoustic function-providing functional module is arranged, that at the module receptacle an electrical connection arrangement to an electrical connection of the at least one functional module is arranged on the suction device, and that at least a functional module by means of connecting means with the sucker housing is detachably connectable. To solve the task Furthermore, a functional module according to another independent claim.

One The basic idea of the invention is that the functional module, depending on Need is interchangeable. So it's possible at different Requirements for the suction device different function modules to use. It is understood that even several module shots on a suction device according to the invention can be present.

Though In principle, it would also be conceivable to retrofit the functional module opening the suction device from the inside to arrange the operating wall. The control wall is alone because of their accessibility expediently an outer wall.

Though it would be conceivable in principle that the functional module in assembled state completely placed on the nipple housing is, d. H. does not penetrate into the nipple housing. Prefers However, an embodiment in which the module receptacle has a receiving space in which the at least one functional module is wholly or partially taken in the assembled state. The recording room is advantageously accessible from the outside. For example the receiving space is a receiving chamber or a receiving shaft.

Preferably the recording room is so deep that a front of at least a function module not or only slightly before a recording room projecting portion of the control wall protrudes. The penetration depth of the Function module thus essentially corresponds to a depth or Height of the function module. This is the function module not in front of the sucker housing, which is visually appealing is and a mechanical protection for the functional module represents.

Advantageous is also a seal assembly that the function module, the module recording or also the electrical connection arrangement as well as corresponding ones Protects contacts of the function module from environmental influences. For example, at the terminals of the terminal assembly at least one seal may be provided. It is preferred if on the outer circumference of the functional module and / or on an inner circumference the module holder is arranged a seal. The seal is preferred designed so that no dirt penetrate into the receiving space can.

The electrical connection arrangement preferably has supply contacts for supplying electrical power to the suction device connectable electrical consumer. The consumer is for example a power tool. It is understood that in addition to the at least one functional module also at least one fixed Socket on the suction device can be present, so that in present case two or more electrical connections are possible for electrical consumers.

at The supply contacts have different variants. For example, these may have a switchable switch supply contact, which can be switched on and off by a switch of the suction device is. This switch of the suction device can be a separate, specifically switch associated with the switch supply contact or in a preferred embodiment of the invention a "main switch", advantageously a switch, which is provided for switching the suction motor.

Furthermore, it is possible that the versor Contact with the contact is a continuous current contact, which is for example permanently connected to a power supply connection of the suction device, with which it can be connected to a power supply network. When the suction device is operated by means of a rechargeable battery, the continuous current contact with the rechargeable battery is permanently connected.

Farther is an automatic power supply contact appropriate, which is associated with a current sensor. If via the automatic power supply contact current flows, this current flow is detected by the current sensor.

Further Supply contacts, in combination with all aforementioned variants are useful, for example Protective earth contacts, ground contacts and the like.

about the supply contacts of the suction device can one or more power supply connections at the respective Supply module to be supplied with electrical energy, in turn an electrical consumer, for example an electric tool, is connectable. The function module can be with one or a plurality of the aforementioned supply contacts, for example the Wiring supply contact, the continuous current contact and the automatic power supply contact be connectable by means of a selector switch. It is understood that the Selector switch also only the selection of two of the three aforementioned contacts can allow. Furthermore, according to a variant the invention provides that the functional module umkonfigurierbar is such that the power supply contact by an example Reconnect from the power connections of the function model with optional at least two of the three of the aforementioned variants switch supply contact, Continuous current contact or automatic power supply contact is connectable.

The electrical connection arrangement of the suction device has expediently also suction device signal contacts and / or a wireless internal interface for communicating data signals and / or control signals to the Function module or from the respective function module. The signal contacts are expediently potential-free, including, for example a relay or the like may be provided.

The Connection of the function module with the suction device takes place expediently without tools. Conveniently, are latching means, such as latching hooks, provided. Farther For example, the connecting means may be one or more Include screws. A variant of the invention can provide that the function module deliberately fastened only by means of tools on the suction device or from this again is solvable. This can be, for example represent an improved theft protection or electric Be indicated that the supply contacts of the Suction device are not openly accessible. It understands itself that with fasteners that can only be operated with tools are, certainly also locking means or the like are used can, however, be advantageous only with a suitable Tool in a release or release position for removal of the functional module can be brought.

The Function module according to the invention provides a electrical, optical or acoustic function or any combination of it available. The function module can, for example, a Switching module be. Also display modules are appropriate.

The Function module expediently has suction device signal contacts, which can communicate with the module signal contacts, for example, to communicate data signals or Steuersig signals. The data signals are expediently bus data signals.

The Function module has in a preferred embodiment an electrical switch for turning on or off the Suction motor of the suction device. This switch is in one preferred embodiment, a signal switch, d. H. he gives a switching signal for turning on or off the suction motor to a in the suction device arranged main switch. The switching signal can transmit potential-free to the suction device become. In any case, the switching signal has expediently a lower potential than the main switch of the suction device, with which the suction motor is switched on and off.

The Function module can be a compressed air module. The functional module has, for example, a compressed air connection arrangement for connection a compressed air tool on. The compressed air connection arrangement comprises expediently compressed air connections for looping through a compressed air line supplying the compressed air tool. At least one of the compressed air connections is expediently with a quick coupling and / or a counterpart for Provided quick couplings. The compressed air functional module comprises expediently a compressed air sensor for detecting a compressed air flow, which flows through the function module. The compressed air sensor ent holds, for example, a spring-loaded Sensor body, in particular a float, in the case of compressed air actuation or when flowing through the compressed air is actuated and closes a switch, preferably a reed contact. The float can for example, be magnetic. It is understood that the compressed air sensor may also be a pressure switch by pressure is operable.

Farther it is advantageous if the function module is a current sensor for Detecting a current flowing through the functional module current flow. A potential-free switching contact is expedient. For example, if the aforementioned power supply connection a consumer is connected and this is switched on, d. H. z. B. a power tool is turned on, reports this the current sensor or the switching contact to the suction device, which then activates the suction motor. The respective sensor, For example, the compressed air sensor, the current sensor or the switching contact, are advantageous for transmitting data signals and control signals connected to the module signal contacts.

At It should be noted that the functional module also has a bus coupler for connection to a data bus of the suction device can.

The Function module includes, for example, data contacts for connection a data device to a data bus of the suction device and / or the functional module. Thus, for example, a diagnosis, Programming or calibration of the suction device and / or Function module possible. The data contacts are expediently for connection to the data bus of the suction device with the module contacts connected.

A Another variant of the invention provides that the functional module a wireless external interface for wireless communication having the functional module and / or the suction device. Thus, it is possible, for example, by means of a remote control to switch the suction device on and off, its suction power to adjust or the like.

Farther can the function module optical or acoustic output means for Output of data, such as diagnostic data of the suction device, music or the like. A variant of the invention provides that the function module compensation of noise emission of the Suction device has.

The Function module can also be a radio receiver and / or Have data reading means. The data reading means are suitable, for example for the output of in MP3 format or any other Music data format stored music data.

One inventive functional module can also be Master-slave module, with the help of which to the invention Suction device another suction device connected can be. The two suction devices can open This way at the same time switched on and off, so that their Suction power is available simultaneously. If that one Suction device is turned on, for example, detects the Current sensor in the function module of the other suction device the aforementioned suction device is connected, the current flow to the newly switched on suction device and switches as a result that the erfindungsge Permitted functional module having Suction unit also on. This then forms a slave suction device.

It It is understood that combinations of the previously explained Function variants in one and the same functional module feasible are.

The Suction device is expediently a transportable, for example, rollable and / or portable, suction device, in particular a workshop vacuum cleaner.

following Embodiments will be explained with reference to the drawing. Show it:

1 an inventive suction device in a perspective oblique view obliquely from the front,

2 a detail A of the suction device according to 1 with a compressed air function module,

3 the clipping according to 2 , but with remote function module,

4 a perspective oblique view from the front and

5 a perspective oblique view from behind the compressed air function module according to 1 . 2 .

6 a perspective oblique view from the front and

7 an oblique perspective oblique view of a module with a potential-free switching contact,

8th a function module diagonally from the front, which includes a radio receiver and an MP3 player,

9 a perspective oblique view from the rear and

10 a perspective oblique view from the front of an electric power module and

11 a perspective oblique view of the suction device according to 1 , but with remote function module and module cover covered by a panel.

Inside a teatcup 11 a suction device 10 is a naturally aspirated engine 12 for generating a suction flow 13 arranged, which has a suction inlet 14 in the nipple housing 11 is sucked. To the suction inlet 14 an unillustrated hose can be connected. Inside the sucker housing 11 there is also a filter arrangement 15 for separating particles from the suction flow 13 ,

On a top 16 of the sucker housing 11 there is a recording 17 for holding the suction hose and / or a connection cable 18 with which the suction device 10 can be connected to an electrical supply network. The suction device 10 is a portable suction device, on the underside rollers 19 . 20 are arranged. The front castors 20 are swivel castors. Furthermore, the suction device 10 on a carrying handle 21 at the top 16 be taken.

Between one the suction inlet 14 having front wall 22 and the top 16 extends a control wall 23 with controls 24 for operating the suction device 10 , The service wall 23 is suitably inclined, so that the controls 24 are easily operated from diagonally above.

The controls 24 include a switch 25 which forms, so to speak, a main switch. With the switch 25 can the suction motor 12 be switched on and off. Furthermore, an automatic mode is adjustable, wherein the suction motor 12 always runs when a connected consumer electrical power through the suction device 10 receives what will be explained later. With the help of a Saugleistungs- or speed switch 26 can be a power of the suction motor 12 be set. An adjustment switch 27 allows electrical adjustment of the suction device 10 at a respective suction inlet 14 connected suction hose. With a cleaning switch 28 is a cleaning function of the suction device 10 switchable and / or parameterizable. One firmly on the suction device 10 installed outlet 29 allows the insertion of an electrical energy consumer. The power outlet 29 is with the connection cable 18 electrically connected.

About the controls 24 also puts the suction device 10 According to the invention, optional additional functions are available which the operator can select as required:
At the control wall 23 is a module recording 30 for optional inclusion of function modules 50a . 50d which provide electrical, visual and acoustic functions.

The module holder 30 is designed in the manner of a receiving shaft, which is closed. From the control wall 23 away extending in the direction of the interior of the sucker housing 11 peripheral walls 32 . 33 to a floor 31 the module recording 30 out. Ingress of dirt through the module holder 30 in the interior of the sucker housing 11 is prevented.

As a further protective measure against the ingress of dirt into through the perimeter walls 32 . 33 and the floor 31 limited recording room 37 the module recording 30 is a seal arrangement 35 with a seal 36 intended. The seal 36 For example, an O-ring is attached to a border area 34 of the recording room 37 for example between the operating wall 23 and the perimeter walls 32 . 33 is arranged. When the function modules 50a - 50d on the sucker housing 11 are mounted, lie their front walls 51a - 51d each on the seal 36 on, so no dirt between the operating wall 23 and the respective front wall 51a - 51d in the recording room 37 penetrates. The front walls 51a - 51d cover the module holder 30 or the recording room 37 completely off.

Instead of the functional modules 50a - 50d can the module recording 30 also by a cover plate 38 be covered, the contour of the front walls 51a - 51d is similar 11 ).

The recording room 37 forms a plug-in receptacle for receiving the function modules 50a - 50d that is in the module recording 30 are easy to insert. Anyway, the functional modules 50a - 50d detachable with the sucker housing 11 connectable. In this respect, the receptacle designed as a plug-in receptacle forms 37 already a component of fasteners 52 with which the functional module 50a - 50d detachable with the sucker housing 11 is connectable.

In addition, the connecting means include 52 guide ribs 39 in front of the perimeter walls 32 . 33 project and the respective functional module 50a - 50d lead and support in the assembled state.

For captive protection of the function modules 50a - 50d include the connecting means 52 continue to screw 53 passing through screw domes 65 the functional modules 50a - 50d are plugged through, with screw receptacles 40 the module recording 30 aligned, if the respective function module 50a - 50d on the sucker 10 is mounted.

The recording room 37 has a depth that is sufficient for the front wall 51a - 51d essentially with the operating wall 23 Aligns when the respective function module 50a - 50d on the sucker 11 is attached.

Furthermore, an electrical coupling of the function modules 50a - 50d to the suction device 10 possible, for which an electrical connection arrangement 41 the module recording 30 is provided. The connection arrangement 41 includes supply contacts 42 with a continuous current contact 43 always with the connection cable 18 is connected, so that, for example, a potential of 230 V on the continuous current contact 43 is present when the connection cable 18 is connected to an electrical supply network, not shown. Furthermore, the supply contacts include 42 a switch supply contact 44 which then has a power supply potential when the switch 25 the suction engine 12 turns on, as well as an automatic power supply contact 45 which is a current sensor 46 for detecting a current flow via the automatic power supply contact 45 assigned. Furthermore, supply contacts 42a (Protective conductor / PE) as well 42b (Mass / M) Components of the supply contacts 42 ,

A data-technical or signal-technical connection between suction device and functional module 50a - 50d is about Saugge advises signal contacts 47 possible. For example, there are data contacts 48 with a data bus of the suction device 10 connected. switch contacts 49 enable a potential-free signaling of an input and output signal for switching on and off the suction motor 12 when the switch 25 on "automatic" stands.

In any case, the electrical connection arrangement allows 51 a multitude of possibilities of most diverse function modules, among which the functional modules 50a 50d are explained below:
The functional module 50a is a compressed air module for connecting a compressed air tool. The functional module 50a has a compressed air connection arrangement 54 with compressed air connections 55a . 55b , to each of which a compressed air hose can be connected. The compressed air connection 55a includes a quick release while the compressed air connection 55b so to speak forms a counterpart for a quick coupling, which is arranged on a compressed air hose, not shown. Thus, therefore, a compressed air connection via the connection arrangement 54 through the function module 50a be looped through, with a compressed air path in the function module 50a via a compressed air sensor 56 for detecting a compressed air flow leads.

The compressed air sensor 56 actuates a switch 57 that with module signal contacts 58 connected is. If the functional module 50a in the module holder 30 is plugged in, are the module signal contacts 58 with the suction device signal contacts 47 electrically connected. As a result, for example, an electrical connection between the switch 57 and the switch contacts 49 realized, so that upon actuation of the not shown, to the compressed air connection arrangement 54 connected compressed air tool the switch 57 the two switching contacts 49 bridged, what to turn on the suction motor 12 leads.

Advantageously, the electronic or electrical components of the functional module 50a in a housing 59 sheltered. The housing 59 is suitably sized so that it is on the guide ribs 39 is guided.

The functional module 50b serves for potential-free switching of the suction motor 12 , On his front wall 51b is a connector 60 arranged for insertion of a plug. The connector, which is configured here as a socket, is by means of a lid 61 Lockable and thus estimated from environmental influences.

For example, contacts 62a . 62b of the connector 60 with contacts 58b the module signal contacts 58 connected so that an electrical connection between the module signal contacts 58b and the suction-side Sauggerät signal contact clock 47 by plugging in the function module 50b in the module holder 30 can be produced.

Alternatively, however, would also be a data connection for connection to a data bus of the suction device 10 possible. These are, for example, contacts 62a . 62c by means of cables 63 . 64 with module signal contacts 58a connected when plugging in the function module 50b with the suction side data contacts 48 get in contact. Thus, for example, a parameterization, programming or diagnosis of the suction device 10 via the function module 50b possible. To the contacts 62a . 62c For example, a computer is connected to it.

For guidance on the guide ribs 39 the module recording 30 are at the screw domes 65 of the function module 50b guide projections 66 provided in the manner of lateral guide wings.

The functional module 50c is used to entertain a user of the suction device 10 , It has a radio receiver 67 as well as data reading means 68 for reading music data. In one on a front wall 51c arranged slot 72 the data reader 68 For example, a memory card (SD card, MMC card or the like) can be inserted, which the data reading means 68 read. For example, the card stores music data in MP3 format. To output the music and speech of the radio receiver 67 and the data reading means is a speaker 69 , hence an acoustic output device.

Appropriately, are also optical output means 71 , For example, an LCD display, available, for example, to display the currently set station.

The ad 70 but can also be used to output diagnostic data of the suction device 10 serve, for example, to display hours of operation, the current suction or the like. The speaker 69 can also be used for diagnostic messages, eg. B. at a maximum filling of the filter assembly 15 to issue a warning tone.

The functional module 50d has one on the front wall 51d arranged electrical power supply connection 73 for connecting an electrical load, such as an electric tool on. The power supply connection 73 includes a power outlet 74 , preferably a grounded outlet, by means of a lid 75 is lockable. The lid 75 is pivotable with respect to the front wall 51d ,

contacts 76 . 77 and 78 the socket 74 are over lines 83 with contacts 79 . 80 and 81 a connector 82 connected. The connector 82 is used to make electrical connections to the supply contacts 42 the electrical connection arrangement 41 of the suction device 10 , For example, the contact represents 79 a connection to the supply contact 42a , hence a protective conductor connection, during the contact 80 with the other supply contact 42b forms a ground connection. The contact 81 is in the inserted state of the function module 50d with the continuous current contact 43 connected. You could contact 81 at any time at one of the contact points 84 or 85 arrange to plug in the function module 50d a connection to the suction-side switch supply contact 44 or the automatic power supply contact 45 manufacture. Thus, the functional module 50d reconfigurable at any time. Also in terms of manufacturing has the wiring with free lines 83 the advantage that following a common part principle different contact points, so for example, the contact points 84 or 85 , with the power contact 78 the socket 74 are connectable.

Greater flexibility would be achieved by placing one between the contact 78 on the one hand and contact 81 as well as at the contact places 84 and 85 arranged contacts, not shown, arranges a selector switch, preferably on the front or front wall 51d is arranged so that the functional module 50d between a continuous current, an automatic mode and a switching mode is switchable.

It is understood that the term electrical connection arrangement between a suction device according to the invention and an associated likewise function module according to the invention expediently provides electrical contacts. At least for an electrical power supply of the respective functional module by the suction device electrical contact surfaces are advantageous. For a data communication, however, the electrical connection arrangement can also be designed wirelessly. If the function module then has a local power supply, for example an accumulator, not even electrical line connections or contact connections between the suction device and the functional module are necessary. For example, the functional module could 50b for wireless communication with the suction device 10 a radio module 86 to realize a wireless internal interface 87 up with a suction device 10 arranged radio module 88 communicates wirelessly, which has a wireless internal interface 89 represents. The module signal contacts 58 are then not required, at most for electrical power to the function module 50b ,

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10130995 [0002]

Claims (20)

Suction device for separating particles from a suction flow ( 13 ), with a naturally aspirated engine ( 12 ) for generating the suction flow ( 13 ) and with a control wall ( 23 ) for operating the suction device ( 10 ) having suction cup ( 11 ), characterized in that on the operating wall ( 23 ) at least one module receptacle ( 30 ) for receiving at least one function module providing an electrical and / or optical and / or acoustic function ( 50a - 50d ) is arranged that at the module receptacle ( 30 ) an electrical connection arrangement ( 41 ) to an electrical connection of the at least one functional module ( 50a - 50d ) to the suction device ( 10 ), and that the at least one functional module ( 50a - 50d ) by means of connecting means ( 52 ) with the sucker housing ( 11 ) is releasably connectable. Suction device according to claim 1, characterized in that the module receptacle ( 30 ) a recording room ( 37 ), in which the at least one functional module ( 50a - 50d ) in the suction device ( 10 ) mounted state is at least partially included. Suction device according to claim 1 or 2, characterized in that the receiving space ( 37 ) is so deep that a front side of the at least one functional module ( 50a - 50d ) in the suction device ( 10 ) mounted state not or only slightly before a the receiving space ( 37 ) surrounding part of the control wall ( 23 ) protrudes. Suction device according to one of the preceding claims, characterized in that between the nipple housing ( 11 ) and the at least one functional module ( 50a - 50d ) a sealing arrangement ( 35 ) is arranged to protect against environmental influences. Suction device according to claim 4, characterized in that the sealing arrangement ( 35 ) one between the module receptacle ( 30 ) and the at least one functional module ( 50a - 50d ), in particular between a periphery of the at least one functional module ( 50a - 50d ) and the operating wall ( 23 ) or a peripheral wall of the module receptacle ( 30 ), seal ( 36 ) and / or one on the electrical connection arrangement ( 41 ) arranged seal comprises. Suction device according to one of the preceding claims, characterized in that the electrical connection arrangement ( 41 ) Supply contacts ( 42 ) for supplying electrical power to the suction device ( 10 ) connectable electrical consumer, in particular an electric tool having. Suction device according to claim 6, characterized in that the supply contacts ( 42 ) one by a switch ( 25 ), in particular for switching the suction motor ( 12 ), the suction device ( 10 ) switchable switch supply contact ( 44 ) and / or one with a power inlet of the suction device ( 10 ) connected continuous current contact ( 43 ) and / or an automatic power supply contact ( 45 ), wherein the automatic supply contact ( 45 ) a current sensor ( 46 ) for detecting a to the automatic supply contact ( 45 ) is associated with flowing current flow. Suction device according to one of the preceding claims, characterized in that the electrical connection arrangement ( 41 ) Suction device signal contacts ( 47 ) and / or a wireless internal interface ( 89 ) for the communication of data signals, in particular bus data signals, and / or control signals to the at least one functional module ( 50a - 50d ) or of the at least one functional module ( 50a - 50d ). Suction device according to one of the preceding claims, characterized in that the connecting means ( 52 ) at least one screw ( 53 ) and / or locking means and / or a connector means, in particular that the functional module ( 50a - 50c ) as on or in the suction device ( 10 ) plug-in plug-in module and / or the module receptacle ( 30 ) is designed as a plug-in receptacle. Function module ( 50a - 50d ) for a suction device ( 10 ) according to one of the preceding claims, wherein the functional module ( 50a - 50d ) on a module receptacle ( 30 ) of the suction device ( 10 ) and with the suction device ( 10 ) by means of connecting means ( 52 ) mechanically and with an electrical connection arrangement ( 41 ) is electrically connectable and provides an electrical and / or optical and / or acoustic function. Function module according to claim 10, characterized in that it is for connection to suction device signal contacts ( 47 ) of the suction device ( 10 ) provided module signal contacts ( 58 ) and / or a wireless internal interface ( 87 ) for communicating data signals, in particular bus data signals, and / or control signals to the suction device ( 10 ) or from the suction device ( 10 ). Function module according to claim 10 or 11, characterized in that it comprises an electrical switch ( 57 ) for switching on and / or off the suction motor ( 12 ) of the suction device ( 10 ) having. Function module according to one of claims 10 to 12, characterized in that it comprises a compressed air connection arrangement ( 54 ) for connecting a compressed air tool. Function module according to one of claims 10 to 13, characterized in that it has an electrical power supply connection ( 73 ) for supplying electrical power to the suction device ( 10 ) connectable electrical consumer, in particular an electric tool having. Function module according to claim 14, characterized in that the power supply connection ( 73 ) in the suction device ( 10 ) mounted state with a by a switch ( 25 ) of the suction device ( 10 ) switchable switch supply contact ( 44 ) or with a current input of the suction device ( 10 ) connected continuous current contact ( 43 ) or with an automatic power supply contact ( 45 ) or, in particular by means of a selector switch, is connectable, wherein the automatic power supply contact ( 45 ) in the sucker housing ( 11 ) arranged current sensor ( 46 ) for detecting a to the automatic supply contact ( 45 ) is associated with flowing current flow. Function module according to one of claims 10 to 15, characterized in that it comprises a compressed air sensor ( 56 ) for detecting a functional module ( 50a - 50d ) flowing through compressed air stream and / or a current sensor for detecting a functional module ( 50a - 50d ) has flowing current flow and / or a potential-free switching contact. Function module according to one of claims 10 to 16, characterized in that the functional module ( 50a - 50d ) Data contacts for connecting a data device to a data bus of the suction device ( 10 ) and / or the functional module ( 50a - 50d ) having. Function module according to one of claims 10 to 17, characterized in that it has a wireless external interface for wireless communication with the functional module ( 50a - 50d ) and / or the suction device ( 10 ) having. Function module according to one of claims 10 to 18, characterized in that it optical and / or acoustic output means ( 69 . 71 ) for the output of data, in particular diagnostic data of the suction device ( 10 ), or music or a noise emission in particular of the suction device ( 10 ) compensating compensation noise. Function module according to one of claims 10 to 19, characterized in that it comprises a radio receiver ( 67 ) and / or data reading means ( 68 ) for in particular stored in MP3 format music data.