Suction unit with a suction unit transmitter and external communication device therefor

Abstract

The invention relates to a suction device (10) for separating particles from a suction stream (20), comprising a suction motor (19) for generating the suction stream (20) and a suction housing (11) in which the suction motor (19) and a dust collection chamber (15) for collecting particles separated from the suction stream (20) are arranged, wherein the suction device (10) is intended for extracting particles generated during the operation of a hand-held power tool (80) having a drive motor (81) for driving a tool (82).The suction device (10) is provided to have a suction device communication device (40; 140) for communication with an external communication device (50; 150; 250) to be operated at a distance from the suction device housing (11) in connection with the hand-held power tool (80), in particular forming a component of the hand-held power tool (80), wherein the suction device communication device (40; 140) has a suction device transmitter (41s, 141s) for sending at least one control signal (108) and / or message signal (105) to the external communication device (50; 150; 250). The invention further relates to an external communication device (50; 150; 250) for interaction with a hand-held power tool (80) and communication with such a suction device (10).

Description

[0001] The invention relates to a suction device for separating particles from a suction stream, comprising a suction motor for generating the suction stream and a suction housing in which the suction motor and a dust collection chamber for collecting particles separated from the suction stream are arranged, wherein the suction device is intended for extracting particles generated during the operation of a hand-held power tool having a drive motor for powering a tool. The invention further relates to an external communication device for interaction with a hand-held power tool and communication with such a suction device.

[0002] Such a suction device is known, for example, from DE 10 2009 015 642 A1. The suction device draws in particles via a suction hose, the suction hose of which can in turn be connected to an electric hand-held power tool in order to extract dust or particles generated by this hand-held power tool during workpiece processing, for example sawing or drilling.

[0003] A vacuum cleaner typically "listens" to whether its power is needed. For example, the power cord of a handheld power tool can be plugged into an outlet on the vacuum cleaner. A current sensor measures whether the power tool is drawing power from the outlet, indicating that the power tool is in operation. The vacuum cleaner then switches on. In this way, the power tool can influence the operation of the vacuum cleaner. In practice, however, problems occasionally arise if, for example, a filter in the vacuum cleaner becomes clogged or so heavily soiled that the extraction of particles generated by the power tool is no longer satisfactory.

[0004] It is therefore the object of the present invention to improve the usability of a suction device.

[0005] To solve the problem, a suction device of the type mentioned above is provided to have a suction device communication device for communication with an external communication device to be operated at a distance from the suction device housing in connection with the hand-held machine tool, in particular forming a component of the hand-held machine tool, wherein the suction device communication device has a suction device transmitter for sending at least one control signal and / or message signal to the external communication device.

[0006] The external communication device according to the invention for interaction with a hand-held machine tool and communication with the suction device communication device of the suction device according to the invention forms a component of the hand-held machine tool or a module connectable to the hand-held machine tool and has an external receiver for receiving the control signal and / or message signal from the suction device communication device and / or an external transmitter for sending at least one, in particular wireless, control signal and / or message signal to the suction device communication device.

[0007] The external communication device can also be located, for example, at the end of a suction hose remote from the housing of the vacuum unit. The suction hose is connected to the handheld power tool, so the external communication device, which may be designed as a module, is also connected to the handheld power tool. For example, the external communication device and the vacuum unit's communication device can communicate wirelessly. A wired connection and / or further wireless communication can then be provided between the external communication device and the handheld power tool, for example, its control unit.

[0008] A fundamental concept of the present invention is that the suction device, so to speak, influences the hand-held machine tool, which for this purpose has an external communication device, for example by issuing a message about the current operating status of the suction device and / or directly controlling the external device, the hand-held machine tool.

[0009] For example, it is possible that the control signal switches off the hand-held power tool or reduces its power if the power of the vacuum cleaner falls below a certain limit, for example because a filter of the vacuum cleaner is clogged or the like.

[0010] The signal is suitable, for example, for activating an output device on board the external communication unit and / or the handheld power tool to indicate the operating status of the vacuum unit. For instance, if the suction power is insufficient, an indicator light, particularly an LED, can be activated. If the operating status of the vacuum unit is sufficient to ensure safe operation and / or proper particle extraction in the work area of ​​the handheld power tool, a green LED will illuminate; otherwise, a red LED will light up. If the operating status of the vacuum unit is critical, a yellow LED may illuminate.

[0011] A preferred embodiment of the invention provides that the vacuum cleaner communication device can also receive messages or signals from the external communication device. Thus, not only can the vacuum cleaner influence the handheld power tool or send it messages, but conversely, the handheld power tool can also influence the vacuum cleaner, for example, by controlling it to output information from the handheld power tool and / or to influence an operating state of the vacuum cleaner. For example, the handheld power tool can increase or decrease the suction power, or perform similar actions.

[0012] The external communication device expediently communicates directly with a control unit of the hand-held power tool or forms part of such a control unit. For example, the communication can be configured so that signals or information received by the hand-held power tool's control unit are sent from the external communication device to the vacuum unit. Conversely, the external communication device forwards information, messages, signals, or the like received from the vacuum unit to the control unit and / or directly controls the control unit, for example, to increase or decrease the speed of a drive motor of the hand-held power tool, to block the drive motor if the vacuum unit's suction power is too low, or similar actions.

[0013] An advantageous method provides that the vacuum cleaner communication device sends at least one identification identifier and / or one operating parameter to the external communication device and / or receives at least one identification identifier and / or one operating parameter from the external communication device, and that the vacuum cleaner and / or the hand-held machine tool performs at least one function based on the respective identification identifier and / or operating parameter received.

[0014] The underlying principle is that the handheld power tool registers with the vacuum cleaner, and / or vice versa, sending an identification code and / or operating parameters to the other device. Based on this information, initialization is possible, allowing the vacuum cleaner to adjust its operating mode to suit the handheld power tool. For example, if the tool is a hand saw that produces a large number of particles when sawing a workpiece, the vacuum cleaner will adjust its suction power accordingly. The cleaning of the vacuum cleaner's filter can also be performed more frequently, meaning that the cleaning interval for a circular saw, for instance, is significantly shorter than for a jigsaw, which generates fewer particles during operation.It should be noted at this point that the hand-held power tool can of course be designed in different ways, for example it can include a drill, a saw, in particular a circular saw, plunge saw or the like.

[0015] It is possible that the device receiving an operating parameter or identification code—that is, the vacuum cleaner or the handheld power tool—adjusts its subsequent operation based on the received identification code or operating parameter. For example, the vacuum cleaner adjusts itself to the handheld power tool, ensuring that the suction power does not fall below a minimum or rise above a maximum. If the handheld power tool, such as a grinder or polisher, is used to process sensitive surfaces, excessive suction power can be detrimental. Conversely, insufficient suction power, a clogged filter, or similar issues on the vacuum cleaner side can lead to undesirable environmental impacts, meaning that the vacuum cleaner does not adequately remove particles from the handheld power tool's work area.This can potentially lead to health problems for the user. The invention can remedy this by enabling the vacuum device to essentially recognize which hand-held power tool is connected and adjust its operating parameters accordingly.

[0016] The measures proposed in connection with the method according to the invention and specified in the dependent claims can, of course, also be reflected in a corresponding design of the suction device, the suction device communication device, and the external communication device. For example, these devices have suitable operating resources for carrying out the respective steps, such as a microprocessor and suitable programs or the like.

[0017] Some steps according to the invention are explained below:

[0018] An advantageous measure provides that the vacuum cleaner or handheld power tool determines, based on the received operating parameter and / or identification code, whether, and under what conditions, operation of the vacuum cleaner / handheld power tool pairing is possible if it meets at least one criterion. This criterion could be, for example, a safety criterion, an environmental criterion, an occupational safety criterion, or the like. Thus, if, for instance, the vacuum cleaner cannot extract a sufficient number of particles, it is possible that the vacuum cleaner and / or handheld power tool will block subsequent operation. This protects the user.

[0019] The vacuum cleaner and / or the hand-held power tool should expediently have one or more output devices to display, for example, at least one operating parameter and / or at least one identification code and / or the aforementioned at least one criterion. The output device can also advantageously indicate whether and under what conditions the operation of the vacuum cleaner and hand-held power tool pairing, fulfilling at least one criterion, is possible. The operator thus receives feedback on what information is being exchanged and / or how subsequent operation is possible. For example, if the vacuum cleaner and the hand-held power tool are compatible, a green indicator light or similar can be activated as a visual output device.Such an output device may be provided on the hand-held machine tool and / or on the suction device, for example on the suction device communication device and / or on the external communication device.

[0020] A preferred embodiment of the invention provides that the vacuum device and / or the handheld power tool are designed to block operation with the other device if at least one criterion cannot be met. For example, if the vacuum device detects that the handheld power tool would produce too many particles that could not be extracted, the vacuum device can block its operation. Similarly, the handheld power tool can block operation if the criterion cannot be met or is not met.

[0021] While operating a vacuum cleaner and handheld power tool together is possible, certain operating or functional parameters are necessary for optimal performance. Therefore, it is advantageous if the vacuum cleaner and / or the handheld power tool are designed to allow one or more parameters to be adjusted according to at least one criterion. This would allow, for example, the vacuum cleaner to adapt its suction power to the handheld power tool. Similarly, the handheld power tool is advantageously designed so that it can only be used within a speed or working range that allows the vacuum cleaner to still extract particles to a sufficient extent, as required by the criterion.Of course, a cleaning function for cleaning a filter of the vacuum cleaner can also be set based on the working parameter, so that at least one criterion is met.

[0022] It should be noted that one embodiment of the invention provides that the handheld power tool uses data received from the vacuum device to set its own operating parameters, i.e., define a speed range, or that the vacuum device uses data received from the handheld power tool to set its own operating parameters, such as cleaning intervals, suction power, and the like. It is also possible for one device to modify the operating parameters of the other device and / or send corresponding control signals. Thus, for example, the vacuum device can send operating parameters to the handheld power tool, specifying them based on the received identification code of the handheld power tool or the received operating parameters of the handheld power tool.

[0023] The identification identifier can be designed to uniquely identify each vacuum cleaner or handheld power tool, allowing for the derivation of operating data such as performance data, power requirements, or similar information. For example, the identification identifier can specify the type of vacuum cleaner or handheld power tool. A unique identifier, occurring only once worldwide, is also possible. Naturally, the identification identifier can also be multi-part, including, for example, a type identifier for the device and a unique serial number.

[0024] Regarding the at least one operating parameter, it is possible that it is, for example, a machine tool operating parameter of the hand-held machine tool, representing a possible or current operating state during operation of the hand-held machine tool. For example, the operating parameter represents a maximum particle quantity typically or currently occurring during operation of the hand-held machine tool, a typical particle characteristic, or the like.

[0025] An operating parameter assigned to the vacuum cleaner expediently constitutes a vacuum cleaner operating parameter, representing an operating state that is currently or potentially occurring during operation of the vacuum cleaner. The vacuum cleaner operating parameter or the vacuum cleaner identification identifier can, for example, specify the suction power of the vacuum motor and / or a maximum suction flow rate and / or the remaining particle holding capacity in the dust collection chamber or in a filter within the dust collection chamber.

[0026] The suction device is expediently designed to allow the setting of at least one function of the suction device and / or the hand-held power tool based on at least one identification identifier and / or operating parameter. This may be a received or a transmitted identification identifier or an operating parameter that is received or transmitted.

[0027] For example, the suction device is designed to set its own function on the suction device itself based on the operating parameter or identification code received from the hand-held machine tool, for example, a suction power of the suction motor, a size of the suction flow, a cleaning function for cleaning a filter, or the like.

[0028] The suction device is advantageously designed as a control unit for the hand-held power tool. The suction device's communication unit is designed, for example, to send a control signal and / or a message signal, generated based on the received operating parameter and / or identification code, to the external communication unit connected to or forming part of the hand-held power tool. The control signal can be used, for example, to control a function of the hand-held power tool, such as its drive motor. The message signal is suitable, for example, for outputting information determined by the suction device's communication unit or the suction device itself, such as a warning message. The aforementioned acoustic and / or visual output devices are appropriate for this purpose.

[0029] The suction device expediently has an output device, located either on the device itself (e.g., its housing) or on board the suction device's communication unit, for displaying information determined based on the received operating parameter and the correct or received identification identifier. For example, the suction device can indicate audibly or visually when the hand-held power tool can be operated in conjunction with the suction device. Naturally, other information can also be displayed.

[0030] The external communication device can be designed, for example, as an integral part of the handheld power tool or as a module that can be connected to it. For instance, the handheld power tool might have a module slot into which the external communication device can be inserted. The external communication device could also be a component of an energy storage module, such as a battery module, for supplying electrical power to the handheld power tool.

[0031] The external communication device is expediently designed to set at least one function of the vacuum cleaner or the hand-held power tool, or both, based on at least one identification identifier or operating parameter, or both. The external communication device can set the function, for example, based on an operating parameter received from or present on board the hand-held power tool, as well as based on an identification identifier received from the vacuum cleaner or the identification identifier of the hand-held power tool itself.

[0032] The external communication device is advantageously designed to send a control signal, generated based on the received operating parameter or identification code, for setting at least one function of the vacuum cleaner, for example, to adjust the suction power of the vacuum motor, the suction flow rate or volume flow, the intervals of the vacuum cleaner's cleaning function, or the like. It is also advantageous if the external communication device is designed to send a message signal to the vacuum cleaner's communication device to output information, such as a notification. This information is determined, for example, by the external communication device, the vacuum cleaner, or both in conjunction with each other.

[0033] The external communication device is advantageously designed to receive an identification code or operating parameter from the control unit of the hand-held machine tool. The control unit of the hand-held machine tool thus determines the identification code or operating parameter and sends it to the external communication device for further processing. Conversely, it is also possible for the external communication device to communicate with the control unit of the hand-held machine tool, i.e., to forward an identification code or operating parameter received from the vacuum cleaner to the control unit of the hand-held machine tool.

[0034] The suction device according to the invention is advantageously a mobile suction device. The suction device preferably has wheels for moving across a surface. Of course, the suction device could also be a portable suction device, with or without wheels. The suction device according to the invention is advantageously not designed as a self-contained, robot-like suction device. The suction device can be carried by the operator and used on-site. Furthermore, a suction hose can advantageously be connected to the suction device.

[0035] It is preferred if no wired connection between the suction device and the external communication device is necessary. Accordingly, the external communication device and the suction device communication device can wirelessly transmit one or more operating parameters and / or one or more identification codes and / or control signals and / or alarm signals or the like from the suction device to the hand tool and / or vice versa.

[0036] Wireless means that no electrical or optical cable is required between the communication devices. In other words, it could also be described as wireless. Wired can accordingly be understood as wired if, for example, an electrical wire connection exists between the communication devices. An optical conductor is also a possible connection. The at least one connection between the communication devices can be located on or inside a suction hose between the hand-held power tool and the vacuum cleaner.

[0037] It is possible that a wired interface is provided between the hand-held machine tool or the external communication device and the vacuum cleaner communication device, which is only used as part of an identification procedure in which the two devices adjust to each other or enable operation together and then the wired interface is disconnected again so that the hand-held machine tool can be moved freely away from the vacuum cleaner.

[0038] A cable connection between the vacuum cleaner and the hand-held power tool can, for example, run in a suction hose that connects the two devices.

[0039] With wireless communication, the external communication device can be moved freely, for example, to switch the vacuum cleaner on and off or to control its performance, such as increasing or decreasing the suction power. The transmission of messages is also simplified wirelessly. Wireless communication is possible from the external communication device to the vacuum cleaner, or vice versa, or both. It goes without saying that wired communication between the vacuum cleaner and the external communication device is also possible in one direction.

[0040] A control signal or message signal can be, for example, a single electrical or optical pulse, such as a switch-on signal and a switch-off signal, but also a pulse sequence or the like. Preferably, a given signal also includes more complex messages or telegrams containing more extensive information, such as configuration data, parameterization data, identification data, operating parameters, or the like.

[0041] The wirelessly transmitted or transmissible information, such as the identification identifier or operating parameter, control signals, and / or alarm signals, may be radio signals, optical signals, or both. For example, the communication means of the vacuum cleaner communication device and the external communication device may include optical or radio communication means. The communication interface of the vacuum cleaner communication device and / or the external communication device may include, for example, a WLAN. Infrared signals are also possible. However, a line of sight is not necessary if the wireless alarm signals and / or control signals are or include radio signals.It is preferable if the radio signals are only receivable within a short range of, for example, a maximum of 2-8 meters from the vacuum cleaner, so that interference from other external communication devices is not a concern. Such a short range is generally sufficient, as the vacuum cleaner is also needed at the location of the external communication device where dust particles accumulate.

[0042] The vacuum cleaner communication device can be configured for wireless and / or wired communication with other components of the vacuum cleaner. For example, the vacuum cleaner communication device receives information from a control unit of the vacuum cleaner, which it sends as a message signal or control signal to the external communication device. It is also possible for the vacuum cleaner communication device to forward message signals and / or control signals received from the external communication device, either wired or wirelessly, to another component of the vacuum cleaner, such as the aforementioned control unit.Naturally, the vacuum cleaner communication device can also have additional intelligence or include further components, for example at least one electrical actuating or switching element for setting or switching, for example, the vacuum motor and / or at least one sensor or measuring device for detecting an operating state of the vacuum cleaner.

[0043] The vacuum cleaner communication device can form an integral part of the vacuum cleaner.

[0044] Preferably, the vacuum cleaner communication device forms a vacuum cleaner communication module or comprises a vacuum cleaner communication module in which, for example, the vacuum cleaner receiver and / or the vacuum cleaner transmitter are arranged. Advantageously, a module receptacle for the vacuum cleaner communication module is provided on the vacuum cleaner housing, to which the vacuum cleaner communication module can be detachably connected. For example, this is a module slot into which the vacuum cleaner communication module can be inserted.

[0045] The module mount expediently includes electrical module contacts for electrical connection of the vacuum cleaner communication module to electrical components of the vacuum cleaner located within the vacuum cleaner housing. However, it is also possible for the vacuum cleaner communication module to communicate wirelessly with the other components inside the vacuum cleaner housing. In this embodiment, wireless communication means, for example, a transmitter and a receiver, are expediently provided, with which the vacuum cleaner communication module communicates with at least one electrical component of the vacuum cleaner communication device located within the vacuum cleaner housing. For example, the vacuum cleaner communication module transmits the control signals, which it in turn has received wirelessly from the control unit, to the electrical component located within the vacuum cleaner housing or generates a vacuum cleaner communication signal from them.This electrical component is, for example, an electrical switch, a power control device, or the like.

[0046] The suction device according to the invention expediently comprises a charging device for charging an electrical energy storage module of a hand-held power tool. The charging device has electrical charging contacts for providing a charging voltage for the electrical energy storage module.

[0047] The vacuum cleaner communication device is expediently integrated into the charging device.

[0048] A preferred method is a so-called learning function, in which the external communication device and the vacuum unit's communication device communicate with each other to form a sender-receiver pair. This learning process, also known as a teach-in process, ensures that only paired external transmitters and vacuum unit receivers, or external receivers and vacuum unit transmitters, communicate with each other. For example, the vacuum unit's communication device and the external communication device exchange transmission parameters, authentication parameters, access codes, or similar information during a registration procedure. For instance, an operator can press a button on the external communication device and / or the vacuum unit's communication device, thus establishing a communication relationship in a known manner.

[0049] The suction device is expediently part of a system that also includes the external communication device. However, the external communication device can also be a separate unit, for example, one that is already integrated at the factory into a hand-held power tool or its energy storage module.

[0050] The following explanations refer to an external communication device that, for example, forms part of a system that includes the vacuum unit and the external communication device itself, or to an external communication device designed as a separate communication module, for example, for retrofitting an energy storage module or a hand-held power tool, or intended for mounting on a suction hose. Furthermore, the external communication device can also form an integral part of a hand-held power tool or an energy storage module. It can also be designed as an intermediate module that can be installed between an energy storage module and a hand-held power tool.

[0051] Preferably, the external communication device has at least one sensor and is designed to send control signals for operation, for example to switch the suction motor on or off, depending on sensor signals from the sensor.

[0052] Many options exist when selecting the sensor: For example, at least one sensor can be a position sensor or include a position sensor suitable for detecting the position of the external communication device. Upon a change in position, the position sensor can, for example, send a corresponding start signal, whereupon the external communication device sends the wireless control signal to switch on the vacuum motor.

[0053] It is also possible that at least one sensor includes a motion sensor for detecting movement of the external communication device.

[0054] An electrical sensor, which detects the flow of electrical current to an electrical device operated in conjunction with the vacuum cleaner, and / or a voltage sensor, which detects the electrical supply voltage applied to the device, are also advantageous. Thus, the external communication device generates a control signal to switch on the vacuum motor, for example, when the external communication device vibrates (for example, when the hand-held power tool is running). Similarly, the vacuum motor can be switched on when work area lighting is switched on, the current flow of which is detected by the current sensor.

[0055] The suction device is advantageously designed for use with a hand-held power tool that has a drive motor for powering a tool. The drive motor is, for example, a pneumatic or electric motor. The suction device is designed to extract particles generated during the operation of the hand-held power tool. The at least one sensor is advantageously configured to detect the operation of the drive motor or the hand-held power tool. The suction device forms, for example, a component of such a system, which includes the suction device and the hand-held power tool.

[0056] In connection with such a hand-held power tool, it is advantageous if the at least one sensor comprises a current sensor for detecting an electrical current flow to an electrical component of the hand-held power tool when it is in operation, for example, to the drive motor of the hand-held power tool or a work light of the hand-held power tool, and / or a voltage sensor for detecting the supply voltage present at the electrical component active when the hand-held power tool is in operation. Thus, when the drive motor is operated, this is detected by the sensor, and accordingly, wireless control signals are generated by the external communication device to switch on or increase the power of the vacuum motor.

[0057] Naturally, a speed sensor can also be provided to detect the rotational speed of the drive motor. If the drive motor is not rotating, the external communication device sends a corresponding control signal, whereupon the vacuum unit's communication device and / or the vacuum unit receiver, or the vacuum unit's control unit located on board the vacuum unit, switches off the vacuum motor. Power-dependent control is also possible. For example, if the drive motor of the hand-held power tool rotates faster, the tool operates correspondingly faster, meaning more particles need to be removed. In this case, the vacuum unit's communication device controls the vacuum unit's motor to operate at a higher power output.However, it is also possible that the opposite occurs, meaning that, for example, if the speed drops, the power of the vacuum motor is increased because a correspondingly higher chip removal or other higher particle generation is to be expected at the workplace, so the vacuum device should provide correspondingly more suction power.

[0058] It is also possible that the sensor on board the handheld power tool detects, for example, a magnetic field from the drive motor, and thus includes a magnetic sensor. The magnetic sensor could also be used to detect the switching position of a switch on the handheld power tool, which controls the drive motor or its power output.

[0059] The external communication device may also include an electrical contact or a position sensor for detecting the switching position of a switch on the hand-held machine tool, for example a push button, for switching or power control of the drive motor.

[0060] The external communication device is advantageously designed as an intermediate module that can be arranged between the housing of the hand-held power tool and an energy storage module for the electrical power supply of the hand-held power tool. This provides a particularly simple embodiment in which a known hand-held power tool can be used together with a known energy storage module. The intermediate external communication device, however, detects, for example, a current flow between the energy storage module and the hand-held power tool and accordingly generates the wireless control signals for switching on, off, or power control of the vacuum motor. Of course, other types of sensor-based detection of the operation of the hand-held power tool are also possible in this embodiment, for example, detection of vibration, movement, a change in position, or the like.Such an intermediate module can, for example, be plugged in between existing contacts of the hand-held machine tool and the energy storage module and have its own intermediate module housing. Preferably, the intermediate module is provided with positive locking contours or plug-in connectors that correspond to or are compatible with corresponding positive locking contours or plug-in connectors of the hand-held machine tool or the energy storage module.

[0061] Another preferred embodiment provides that the external communication device forms an integral part of a hand-held machine tool or an energy storage module for the electrical supply of a hand-held machine tool.

[0062] However, it is also possible for the external communication device to be subsequently attached to an external device, such as the aforementioned energy storage module, a hand-held power tool, or the like, or even to the suction hose of a vacuum cleaner. For this purpose, the external communication device preferably uses fastening means, such as one or more straps, magnetic fasteners, snap-fit ​​connectors, or the like.

[0063] It goes without saying that the external communication device can also be screwed and / or glued to another component, for example the hand-held machine tool or an energy storage module for its electrical power supply.

[0064] The external communication device may, for example, be designed as an attachment that is placed on a push button of a hand-held machine tool, or may have such an attachment.

[0065] The external communication device preferably has an interface for wireless and / or wired communication with the handheld power tool, particularly with its control unit, and / or a switching device for controlling the electrical supply voltage of the handheld power tool. Thus, the communication device can, in effect, switch the power supply, or alternatively a compressed air supply, of the handheld power tool on, off, or control it. This variant is particularly advantageous when the communication device is located on board the energy storage module. The handheld power tool and the external communication device communicate with each other, for example, via compatible wireless interfaces, such as radio interfaces, and / or have compatible module contacts, enabling wired or connected communication.

[0066] For the external communication device to operate autonomously, it is advantageous if it has an electrical energy storage device, such as a battery, accumulator, or the like. Furthermore, it is advantageous if it has an energy generation unit, such as an electric generator, which can be driven by the suction current, by movements of the external communication device, or the like.

[0067] Exemplary embodiments of the invention are explained below with reference to the drawing. The drawing shows: Figure 1 is a perspective view of a system comprising a vacuum cleaner and a hand-held power tool in the form of a saw, in particular a jigsaw, equipped with an electrical energy storage module. Figure 2 is a perspective oblique view of an upper part of a vacuum cleaner housing of the vacuum cleaner according to Figure 1 , which has a charging device, Figure 3 the suction cup housing according to Figure 2, however without charging equipment, so that a module recess is visible, approximately corresponding to a section A in Figure 2 Figure 4, the charging device according to Figure 2 , however, away from the suction device, Figure 5 module contacts of the charging device according to Figure 4 , roughly corresponding to section B in Figure 4 Figure 6 shows a view approximately corresponding to the view according to Figure 2 , however, with an energy storage module arranged on the charging device, which is shown from an oblique angle above in Figure 7 and is mounted on a hand-held power tool in the form of a screwdriver or drill in Figure 8, Figure 9 an electrical circuit diagram to illustrate a wireless control of the suction device according to Figure 1 and Figure 10 an electrical circuit diagram to illustrate a charging concept for charging an electrical energy storage module using the suction device according to Figure 1 , accordingly Figure 2 has a charging device.

[0068] A suction device 10 has a suction housing 11. The suction housing 11 comprises a lower part 12 and an upper part 13, which can be detachably connected to the lower part 12. Rollers 14 are arranged on the suction housing 11, of which the Figure 1 The front casters are 14 swivel casters. A dust collection compartment 15, for example a collection tray, is provided in the vacuum cleaner housing 11. A filter bag, for example, can be placed in the dust collection compartment 15, although the vacuum cleaner 10 can also be used without a filter bag. The dust collection compartment 15 is provided in the lower part 12. A suction inlet 17 is provided on a front wall 16 of the vacuum cleaner housing 11, to which a suction hose 18 can be connected. The suction inlet 17 opens into the dust collection compartment 15.

[0069] The electrical components of the suction device 10 are housed in a protected manner within the suction housing 11. Preferably, the electrical components are arranged in the upper part 13, for example, a suction motor 19 with which a suction flow 20 can be generated. The suction motor 19 includes, for example, a fan arrangement (not described in detail) for generating the suction flow 20.

[0070] The vacuum unit 10 can be operated in a manner known per se, for example via operating elements 21, which are arranged on a control panel 22 provided above the front panel 16. These include, for example, a main switch 23 for switching the vacuum motor 19 on or off, or a control switch 24 for adjusting the suction power of the vacuum unit 10. In addition, a socket 25 is provided into which a power cord of an electrical appliance, for example a hand-held power tool (not shown), can be plugged.

[0071] The vacuum unit 10 can be supplied with electrical energy via a schematically depicted internal energy storage device 26, for example a fuel cell or an electric battery, and / or connected to an electrical power supply network N, for example 110 V to 230 V AC, for which a connection cable 27 is provided. When not in use, the connection cable 27 and the suction hose 18 can be inserted into a receptacle 28 on a top surface 29 of the vacuum unit housing 11.

[0072] The suction hose 18 has a housing end 30, which is designed as a plug-in end and can be plugged into or onto the suction inlet 17 in a manner known per se. Its other end forms a suction end 31 and has a suction opening 32, to which, for example, a rigid suction tube, a brush, or the like can be connected, or, as in Figure 1The illustration shows, for example, a hand-held power tool 80. The hand-held power tool 80 is, for example, a jigsaw, although alternatively other saws, e.g. a circular saw, or milling machines or the like are also possible.

[0073] Although the hand-held machine tool 80 is an electric machine, meaning it has an electric drive motor 81, other drive concepts for a hand-held machine tool, for example with a pneumatic motor, are also readily possible with regard to the wireless control concept and / or signaling concept which will be explained later, especially in connection with a polishing tool or grinding tool.

[0074] The drive motor 81 powers a tool 82, for example a saw blade, with which a workpiece W can be machined. For example, the hand-held power tool 80 is used to cut a saw cut S into the workpiece W. This produces dust, which is extracted by the vacuum unit 10.

[0075] The drive motor 81 is arranged in a machine housing 83 of the hand-held machine tool 80. At a rear of the machine housing 83, a bracket 84, concealed in the drawing by an energy storage module 90, is located for holding the energy storage module 90. The bracket 84 also contains electrical contacts 85 (schematically indicated) for electrically connecting the energy storage module 90 to the electrical components inside the machine housing 83. The energy storage module 90 supplies the hand-held machine tool 80 with electrical energy, enabling it to be operated independently without a connection to an electrical power supply network, such as the power supply network N.

[0076] The hand-held power tool 80 has a dust extraction port 86, for example a connection nozzle that can be connected to the suction end 31 of the suction hose 18. Thus, the vacuum unit 10 can directly extract the dust generated during the operation of the hand-held power tool 80.

[0077] The operation and use of the hand-held power tool 80 is simplified in several ways when used in conjunction with the vacuum unit 10. Firstly, the vacuum unit 10 can be switched on and off using a wireless operating concept, eliminating the need for a cable connection. This means, for example, that the vacuum motor 19 runs or does not run when the hand-held power tool 80 is in use. Secondly, the vacuum unit 10 enables convenient charging of the energy storage module 90.

[0078] First, the wireless operation is explained: For example, an external communication device 50 is arranged at the suction end 31 of the suction hose 18, with which wireless control signals 51 can be generated to control the suction device 10, in particular to switch the suction motor 19 on and off. The external communication device 50 is attached to the suction hose 18, for example, by means of a hook-and-loop fastener or other fastening means 52. It would also be possible for the suction hose 18 to have a pocket or other receptacle in which the external communication device 50 is arranged. It is also possible for the external communication device 50 to be overmolded with the material, for example, plastic, of the suction hose 18.

[0079] The external communication device 50 includes, for example, a motion sensor 53 that reacts to movements of the suction hose 18. Thus, if the suction hose 18 is moved in the area of ​​its suction end 31, for example, if it vibrates during operation of the hand-held power tool 80, the motion sensor 53 generates a sensor signal 54. Based on the sensor signal 54, an external transmitter 55s generates the control signal 51, in this case a radio signal, which the external communication device 50 transmits via an antenna 56.

[0080] The external communication device 50 expediently has a local energy storage device 57, for example a battery and / or a storage capacitor, and / or a generator 58 for generating electrical energy. The generator 58 can, for example, be a generator that can be wirelessly charged by means of a charging device 33, in particular an inductive one, which is arranged on or in the vacuum cleaner housing 11, as indicated by an arrow PL. Furthermore, the generator 58 can also be actuated, for example, by movement. In any case, it is preferred if no wired connection is necessary between the vacuum cleaner housing 11 and the external communication device 50, although, for example, a wired connection to the electrical power supply is also possible in principle.For example, electrical charging contacts 133 can be provided as an alternative or supplement to the charging device 33 for charging an external communication device according to the invention. The charging device 33 and the charging contacts 133 form charging means 233. For example, a schematically depicted charging bay or charging receptacle 355 with the charging contacts 133 and / or the charging device 33 is provided on the upper side 29 of the suction device housing 11.

[0081] The vacuum unit 10 has an electrical vacuum unit communication device 40 with a vacuum unit receiver 41r for receiving the control signals 51 sent by the external communication device 50. The vacuum unit communication device 40 includes, for example, a vacuum unit communication module 42, which is mounted in a module receptacle 34 on the vacuum unit housing 11.

[0082] The vacuum cleaner receiver 41r receives the control signals 51, for example, via an antenna 46. The antenna 46 can, for example, protrude from a housing of the vacuum cleaner communication module 42, be integrated into it, or the like.

[0083] The module receptacle 34, for example, has a plug receptacle 35 into which a plug protrusion 43, described in more detail in connection with a charging module 60, can be inserted.

[0084] Electrical module contacts 44 are provided on the plug-in projection 43, for example, which can come into electrical contact with module contacts 36 of the module receptacle 34. The module contacts 44 are provided, for example, on a contact carrier 45, preferably designed in the form of a plug-in projection, which is intended for insertion into a plug-in receptacle 39 of the module receptacle 34. The module contacts 36, 44 are expediently proprietary contacts, i.e., not protective contacts such as those found, for example, on the plug arranged on the connecting cable 27. The module contacts 36, 44 are used for the transmission of electrical energy and / or for the transmission of control signals and / or message signals.

[0085] For example, module 34 has an essentially rectangular cross-sectional contour and is designed as a recess.

[0086] The vacuum cleaner communication module 42, for example, sends switching signals 47 via its module contacts 44 to a control unit 37, which in turn controls the vacuum motor 19, e.g., via suitable circuit breakers, semiconductors, or the like. Thus, when the vacuum cleaner receiver 41r receives a control signal 51 from the external communication unit 50, which serves to switch on the vacuum motor 19, the vacuum cleaner communication module 42 controls the control unit 37 accordingly, which in turn switches the vacuum motor 19 on, off, or adjusts its power, for example, by reducing or increasing its speed, as indicated by an arrow 48.

[0087] It is understood that such actuating devices, switches or the like may also be directly on board the suction device communication module 42, so that the intermediate connection of the control unit 37 is not necessary.

[0088] Furthermore, a variant of the invention may provide that the control unit of a vacuum cleaner integrally incorporates a wireless interface, so that a separate vacuum cleaner communication module, such as the vacuum cleaner communication module 42, is not necessary. For example, the vacuum cleaner receiver 41r could form a component of the control unit 37.

[0089] It is understood that the aforementioned modular concept is advantageous, but it is also possible that the suction device communication unit 40, for example, forms an integral part of the suction device 10. The suction device communication unit 40 can, for example, form a part of the control unit 37.

[0090] Instead of or in addition to the module contacts 36, 44, a wireless interface (radio interface or optical interface) could also be provided between the suction device communication unit 40 and the control unit 37.

[0091] A potential-free coupling between the suction device communication device 40 and the other electrical components of the suction device 10 is preferred, which can also be achieved, for example, by means of optocouplers.

[0092] Another concept provides that, for example, an external communication device 150 is arranged on board the hand-held machine tool 80, or an external communication device 250 is arranged on board the energy storage module 90, which can communicate wirelessly with the suction device communication device 40.

[0093] The external communication devices 150 and 250 can be integral components of the energy storage module 90 or the hand-held machine tool 80. However, a modular concept is also possible, meaning that, for example, the hand-held machine tool 80 and / or the energy storage module 90 can have a module receptacle in which the external communication devices 150 or 250, designed accordingly (e.g., as plug-in components), can be arranged. Furthermore, the external communication devices 150 and / or 250 can also be retrofitted to the energy storage module 90 or the hand-held machine tool 80 using fasteners such as adhesives, snap-fit ​​connectors, or the like. This allows for retrofitting.

[0094] The external communication device 150 includes, for example, a speed sensor 153 that detects the rotational speed of the drive motor 81. When the drive motor 81, and thus the hand-held power tool 80, is operating, the speed sensor 153 controls an external transmitter 155s, which may include a Bluetooth transmitter, to send control signals 151 via an antenna 156, which may be integrated into the machine housing 83. The vacuum communication device 40 then switches on the vacuum motor 19 or sends a switch-on signal to the control unit 37. If the rotational speed of the drive motor 81 increases, and the tool 82 generates even more dust while machining the workpiece W, the external communication device 150 can control the vacuum communication device 40 to increase the rotational speed of the vacuum motor 19.When the hand-held machine tool 80 is switched off, the external communication device 150 is activated to switch off the suction motor 19.

[0095] Instead of or in addition to the speed sensor 153, a magnetic sensor, a Hall sensor, or the like could also be provided. Naturally, a current sensor can also be provided on board the hand-held machine tool 80, which detects the current flow to the drive motor 81 or to a work light (not shown) of the hand-held machine tool 80, which illuminates during operation, and the external communication device 150 accordingly generates a control signal 151 to control the vacuum cleaner communication device 40. Instead of or in addition to the current sensor, a voltage sensor can also be provided, which measures a supply voltage applied to the drive motor 81 or the work light.

[0096] A schematically indicated embodiment provides that a position sensor and / or a magnetic sensor and / or an electrical switching contact or the like of another sensor 153' is arranged on a switch 87, which serves to switch on and off the drive motor 81 of the hand-held machine tool 80, which detects the position of the switch 87 or can be actuated depending on its position, so that the external communication device 150 generates the control signals 51 depending on a position of the switch 87 and thus switches the vacuum motor 19 on and / or off and / or adjusts its power using the vacuum device communication device 40.

[0097] In this context, a redundant acquisition concept should also be noted, meaning that an external communication device according to the invention can, of course, also have several sensors, switching contacts, and the like, so that it generates the control signal depending on at least two sensor signals or signals from switching contacts. For example, the external communication device 150 evaluates the sensor signals of sensors 153 and 153' and only sends the control signal 51 to switch on the vacuum motor 19 if both sensors 153 and 153' report that the drive motor 81 of the hand-held power tool 80 is running.

[0098] It is advantageous if the suction device 10 continues to run for a fixed or preferably configurable overrun time, i.e., the suction motor 19 is only switched off after a certain time, even after the hand-held power tool 80 has already been switched off. This allows dust still present in the suction hose 18 or in the vicinity of the tool 82 to be extracted, even after the hand-held power tool 80 has been switched off.

[0099] Even immediately switching on the vacuum motor 19 when the control signal 51 indicates a switch-on is not always advantageous. For example, there may be an operator error, or the hand-held power tool may not yet be engaged with the workpiece W. Accordingly, it can be advantageous if the vacuum device communication unit 40 also has a fixed or configurable switch-on delay time, so that it only switches on the vacuum motor 19 after the switch-on delay time has elapsed, once it has been activated by the control signal 51 to switch on the vacuum motor 19.

[0100] The external communication device 250 forms part of the energy storage module 90 and includes a current sensor 253, which detects current flow from the energy storage module 90 to the hand-held power tool 80, in particular its drive motor 81. When the current sensor 253 detects current flow, an external transmitter 255s generates a corresponding control signal 251 to control the vacuum cleaner communication device 40, causing it to switch on the vacuum cleaner motor 19. When the hand-held power tool 80 is switched off, the external communication device 250 sends a corresponding switch-off control signal 251, whereupon the vacuum cleaner communication device 40 switches off the vacuum cleaner motor 19.

[0101] The external communication device 250 is arranged in an energy storage housing of the energy storage module 90. It would also be possible, of course, to provide an intermediate module 100, so to speak, which is connected between the connection contacts 92 of the energy storage module 90 and the contacts 85 of the hand-held machine tool 80, in order to detect the current flow from the energy storage module 90 to the hand-held machine tool 80 or the drive motor 81 and to generate a corresponding control signal 251. The intermediate module 100 is indicated.

[0102] A preferred embodiment provides that a vacuum cleaner communication device and an external communication device, which communicate wirelessly with each other, essentially learn to each other through a learning process, e.g., a so-called teach function. This can prevent, for example, misuse or incorrect operation. For instance, during a start-up procedure, the external communication device 50 first sends a communication identifier 59 to the vacuum cleaner receiver 41r, which in turn checks, for example, using a comparison list, whether the communication identifier 59 authorizes the external communication device 50 to send the control signals 51. Thus, if, for example, several tradespeople are working on a construction site and wirelessly switch vacuum cleaners on and off with their hand tools according to the invention, interference can be prevented.

[0103] It is also possible that the vacuum cleaner communication device 40 is ready to receive the communication identifier 59, for example by pressing an electrical contact of the vacuum cleaner communication device 40 (not shown in the drawing), thus recognizing the external communication device 50, 150, 250 as an authorized external communication device and subsequently accepting the control signals 51, 151, 251 from it.

[0104] The charging module 60 can also have or form a vacuum cleaner communication device according to the invention, for example a vacuum cleaner communication device 140.

[0105] Up to now, the communication direction from the external communication device 50, 150, 250 to the suction device communication devices 40, 140 has been described in terms of controlling the suction device 10 by the external communication device 50, 150, 250.

[0106] In the communication direction from the hand-held machine tool to the vacuum unit, messages can of course also be transmitted, so that, for example, the operating status of the hand-held machine tool 80 can be displayed on board the vacuum unit 10. For example, the external communication device 150 can send a malfunction of the hand-held machine tool 80 as a message signal 101 to the vacuum unit communication device 40 via an external transmitter 155s. The vacuum unit then receives the message signal 101 via a vacuum unit receiver 41r and, for example, controls an optical display 102, such as an LED, to display the message signal 101.

[0107] Wireless communication is also advantageous between the external communication device 250, which is, for example, on board the energy storage module 90, and the charging module 60, which includes the suction device communication device 140. For example, the external communication device 250 can use an external transmitter 255s to report the charging status of the energy storage module 90 to the charging module 60 (i.e., the charging device 61) via a message signal 201. The suction device communication device 140 receives the message signal via a suction device receiver 141r. For example, an optical and / or acoustic indicator 103 can be provided on board the charging device 61 to indicate the charging status of the external energy storage module 90, which is operated on the hand-held power tool 80.

[0108] Furthermore, it is possible, for example, for the charging device 61 to control the charging of the energy storage module 90 currently being charged, depending on the signal 201. For instance, it can accelerate the electrical charging of this energy storage module 90 if the energy storage module 90, operated by the hand-held machine tool 80, rapidly loses its charge and therefore soon needs to be replaced. The external communication device 250 includes, for example, a measuring device 257 for detecting the state of charge of the energy storage module 90 and for generating the signal 201 indicating the state of charge.

[0109] Naturally, the aforementioned wireless concept can also be applied in reverse, meaning that the vacuum cleaner communication devices 40, 140 send messages or signals to the external communication devices 50, 150, 250.

[0110] For example, suction device transmitters 41s and 141s are provided on board the suction device communication equipment 40 and / or the suction device communication equipment 140, which are designed to send control signals and / or message signals to the external communication equipment 50, 150, 250.

[0111] For example, if the control unit 37 of the vacuum cleaner 10 signals to the vacuum cleaner communication unit 40 via an internal signal 147 that the dust collection chamber 15 is almost full and can therefore no longer hold any more particles, the vacuum cleaner transmitter 41s can send a message signal 105 to the external communication unit 50, which outputs the content of the message signal 105 via optical or acoustic output devices 106, such as an LED. Based on this signal output, which occurs directly at the hand-held power tool 80, the operator can recognize, for example, that he needs to empty the collection container of the vacuum cleaner 10.

[0112] The control unit 37 can therefore generate a message signal 105 or a message using the vacuum cleaner communication unit 40, which it sends via the vacuum cleaner transmitter 41s to one or more of the external communication units 50, 150, or 250. The message signal 105, which, as indicated, can also be a more complex message containing multiple pieces of information or can even comprise several separate messages, contains, for example, information about the size of the suction flow 20 and / or the suction power of the vacuum motor 19 and / or information about the fill level of the dust collection chamber 15.

[0113] The external communication devices 50, 150, or 250 can output one or more pieces of information from the message signal 105, for example, to output devices 106, which may include, for example, a light indicator (e.g., LEDs), and / or a display, and / or a loudspeaker or other acoustic output devices. Thus, if, for example, the message signal 105 indicates that the dust collection chamber 15 and / or a filter located therein (not shown in the drawing) will soon be completely full and dirty, a light indicator 107 of the external communication device 50, designed as a warning LED, can display this information.

[0114] The external communication device 150 or 250 arranged on board the energy storage module 90, the intermediate module 100, or the hand-held machine tool 80 may also include, for example, a haptic indicator, a vibration indicator, or the like to output the message signal 105. For example, an optical and / or acoustic indicator 104 and / or a vibration element 109 may be provided on board the hand-held machine tool 80 as an output device. This vibrates when the dust collection chamber 15 reaches a critical fill level and / or when the suction power of the vacuum cleaner 10 is reduced, as signaled by the message signal 105, thus indicating to the operator that they should attend to the vacuum cleaner 10 to ensure the desired suction power is available.

[0115] An even more advanced function is achieved when the suction device 10 and / or the suction device communication devices 40 or 140 directly influence the function of the hand-held power tool 80 by means of a control signal 108. For example, if the suction device 10 fails or its suction power is critically reduced, the control unit 37 can send information 147 to the suction device communication devices 40 or 140, which then generate the corresponding control signal 108 and send it to the external communication devices 50, 150, or 250. The external communication devices 150 or 250 can then directly influence the operation of the hand-held power tool 80. For example, if the suction power of the suction device 10 is unavailable or only available to a reduced extent, the control signal 108 can instruct the power of the drive motor 81 to be reduced or even switched off completely.This can, for example, prevent the user from suffering health damage from swirling particles if the vacuum cleaner 10 can no longer adequately extract the particles generated by the hand-held power tool 80.

[0116] The external communication device 250 located on board the energy storage module 90 can, for example, switch the current flow to the hand-held machine tool 80 on and off by means of a switching device 258, e.g. after being controlled by the control signal 108.

[0117] Furthermore, the external communication device 250 can, for example, have a wired or preferably wireless interface 259, e.g., a radio interface, for communication with the hand-held machine tool 80, in particular its control unit 88, e.g., to forward the control signal 108 and / or to communicate the operating parameters 450, 400 and / or the identification identifiers 410, 460. A wired interface 259 can, for example, provide that data is transmitted digitally and / or modulated via the supply lines to the hand-held machine tool 80.

[0118] The external communication device 150 is directly connected to the control system, for example, the on-board electronics, of the hand-held machine tool 80, or forms part of it, so that it can directly influence the operation of the drive motor 81, for example, by switching it off. Naturally, it is advantageous if a warning is issued beforehand so that the operator is not surprised by the aforementioned forced shutdown.

[0119] It is advantageous if the vacuum cleaner communication devices 40, 140 and / or the external communication devices 50, 150, 250, for example, have a microprocessor and / or are suitable for executing software modules with which the functions described above or below can be implemented. For example, the external communication device 50 has a microprocessor 70 which evaluates the sensor signals 54 by means of a program module 71 and, for example, controls or implements the external transmitter 55s and / or the external receiver 55r. The program module 71, as well as the communication identifier 59, is expediently stored in a memory 72.

[0120] In one function, the charging module 60 is used to charge the energy storage module 90 or other energy storage modules not shown in the drawing for hand-held machine tools, for example the hand-held machine tool 80 or one in Figure 8The illustrated hand-held power tool 180, in the form of a cordless screwdriver or drill, is provided. The charging module 60 forms a charging device 61 for charging the electrical energy storage module 90.

[0121] The charging module 60 has a holder 63 on its charger housing 62 for holding the energy storage module 90. The holder 63 includes, for example, a plug-in projection 64 which can be inserted into a plug receptacle 93 of the energy storage housing 91 or the energy storage module 90.

[0122] The bracket 63 also includes a plug-in receptacle or retaining receptacle 68 into which a plug-in projection 94 on a top surface 95 of the energy storage housing 91 can engage. The bracket 63 corresponds to the bracket 84 of the hand-held machine tool 80 or 180, i.e., it is designed for the positive-locking reception of the energy storage housing 91.

[0123] In the area of ​​the plug-in projection 64, electrical charging contacts 65 are provided to supply a charging voltage L for the electrical energy storage module 90.

[0124] The charging voltage L is, for example, a DC voltage in the range of 5 V to 25 V. In this context, it is advantageous if the charging module 60 has detection means 66 to recognize the respective type of energy storage module 90 and adjust the charging voltage L accordingly. Thus, for example, if a 12 V energy storage module is connected, the charging voltage L is set correspondingly lower, while for an energy storage module with a nominal voltage of 18 V, a correspondingly higher charging voltage L is plugged in. The detection means 66 include, for example, electrical means, optical means, or the like. It is also possible that the detection means 66 include, for example, a bus interface to communicate with a bus coupler on board the energy storage module 90 and thus acquire data from the energy storage module 90, such as its state of charge, nominal voltage, or the like.

[0125] By means of electrical adaptation devices 67, which include, for example, an electrical transformer and / or a rectifier or the like, the charging device 61 can convert a supply voltage V provided, for example, by the supply network N to the charging voltage L.

[0126] Furthermore, monitoring means 75 are advantageously provided for monitoring the charging voltage L and / or for monitoring a state of charge of the energy storage module 90, so that it is optimally charged.

[0127] The monitoring means 75 and / or detection means 66 and / or adaptation means 67 comprise, for example, a microprocessor 76 that executes program code from software modules, for example, a software module 78 stored in a memory 77. Implementing the monitoring means 75 and / or the detection means 66 and / or the adaptation means 67 in hardware is readily possible.

[0128] The charger housing 62 is partially designed similarly to the vacuum cleaner communication module 42, and thus also has a plug-in projection 43 on which module contacts 44 are provided for establishing an electrical connection with the module contacts 36 of the module receptacle 34. Thus, the adaptation means 67 arranged inside the charger housing 62 can be supplied with electrical energy by the vacuum cleaner 10, i.e., for example via the connecting cable 27, in order to provide the charging voltage L.

[0129] Additional fixing of the charging module 60 to the vacuum cleaner housing 11 or the module receptacle 34 can be achieved, for example, by screws 69, which can be screwed into corresponding screw holes 38 in the module receptacle 34. A magnetic hold, a snap-fit, or similar mechanism for the charging module 60 to the vacuum cleaner housing 11 is also readily possible, but is not shown in the drawing. The vacuum cleaner communication module 42 can also advantageously have corresponding retaining elements (screws, magnets, snap-fit ​​elements) to ensure a secure hold in the module receptacle 34.

[0130] Furthermore, it is advantageous, although not shown in the drawing, that the charging module 60 or the charging device 61 forms an integral part of the suction device 10, meaning that, for example, the charger housing 62 and the suction housing 11 are one piece.

[0131] Of course, a holder in the type of holder 63 and charging contacts in the type of charging contacts 65 can also be arranged at another location on the vacuum cleaner housing 11, for example at the top in the area of ​​the receptacle 28, where the energy storage module to be charged can be protected and is therefore less exposed than in the area of ​​the control panel 22.

[0132] The vacuum cleaner communication device 140 formed by the charging module 60 includes, for example, a vacuum cleaner receiver 141r. The charging module 60 is supplied with electrical energy, for example a supply voltage V, via the module contacts 36. A current sensor 49 on board the vacuum cleaner 10, for example as a component of or in conjunction with the control unit 37, detects, for example, whether an electrical current is flowing via the module contacts 36.

[0133] When the charging module 60 receives a control signal 51, 151, 251 to switch on the vacuum motor 19 via its vacuum receiver 141r and an antenna 146 integrated, for example, into the charger housing 62, it begins charging the energy storage module 90, thus generating the charging voltage L from the supply voltage V, so that a charging current I flows. An input current E necessary to provide the charging current I is detected by the current sensor 49. The vacuum cleaner 10 thus recognizes that an electrical consumer requires current and switches on the vacuum motor 19 accordingly, in a manner known per se.

[0134] When control signals 51, 151, 251 instruct the vacuum motor 19 to be switched off or its power reduced, the vacuum communication device 140 or the charging module 60 reduces the current supply to the energy storage module 90 or switches off the charging process, so that on the input side (supply voltage V) no input current E detectable by the current sensor 49 or an input current E below a detection threshold flows, and thus, for example, the control device 37 switches off the vacuum motor 19. In this way, the charging module 60 can, for example, simulate a mains-powered electric hand tool that is supplied with electrical energy via the vacuum device 10 – which is not actually the case.

[0135] It is also possible that the charging device 61 is supplied with electrical energy by the energy storage device 26 on board the vacuum cleaner 10. For example, the control unit 37 controls the provision of electrical energy at the module contacts 36. Preferably, the control unit 37 reduces the power output at the module contacts 36 when the vacuum motor 19 is running, and then increases it again. This reduces the load on, for example, the power supply of the vacuum cleaner 10, which provides the charging voltage L.

[0136] The suction device communication devices 40 and / or 140 located on board or connected to the suction device 10 and the external communication devices 50, 150, 250 are also suitable for a registration procedure in which the suction device 10 sends at least one operating parameter 400 and / or at least one identification identifier 410 to the external device, for example the hand-held machine tool 80 and / or its energy storage module 90, and / or in the reverse direction the device to be connected to the suction device 10, for example the hand-held machine tool 80 or its energy storage module 90, sends at least one operating parameter 450 and / or at least one identification identifier 460 to the suction device 10, so that only matching pairs of suction device and hand-held machine tool are used and / or the operating parameters of the suction device 10 and the hand-held machine tool 80 or 180 are set in such a way thatthat optimal operation of the respective hand-held power tool 80 or 180 is possible with the suction device 10.

[0137] If, for example, the suction power of the vacuum unit 10 is insufficient for operating the hand-held power tool, the vacuum unit 10 can be prevented from being used in conjunction with the hand-held power tool 80 by following the procedure described in detail below. However, if the suction power is sufficient for, for example, the hand-held power tool 180, the vacuum unit 10 and the hand-held power tool 180 can be used together.

[0138] Furthermore, it is advantageously possible for the vacuum unit 10 and the respective connected hand-held power tool 80 or 180 to coordinate their respective performance by one device registering with the other device and / or vice versa.

[0139] It should be noted at this point that while wireless communication between the hand-held machine tools 80 and 180 on the one hand and the vacuum cleaner 10, in particular its vacuum cleaner communication devices 40, 140, is advantageous, it does not preclude the possibility that wired communication, at least in one direction (from the vacuum cleaner to the hand-held machine tool or vice versa), is within the scope of the invention, particularly for the application or identification procedure described below, but also for sending message signals and / or control signals. In other words, communication can be wired in one direction, i.e., from the vacuum cleaner to the hand-held machine tool, and wireless in the opposite direction, or vice versa.

[0140] For example, at least one communication line 300, such as an electrical line and / or an optical conductor, runs in the suction hose 18 for this purpose. On the one hand, the suction unit communication devices 40 and / or the control unit 37, or another component on board the suction unit 10, are connected to this communication line in order to communicate with the hand-held machine tool 80 or 180. On the side of the hand-held machine tool 80 or 180, for example, the external communication device 150 or 250 can be connected to the at least one communication line 300.

[0141] For example, the external communication device 150 or 250 sends the identification identifier 460, which identifies the hand-held machine tool 80, to the suction device 10.

[0142] The vacuum device communication device 40 receives the identification identifier 460 and forwards it, for example, to the control device 37, which uses the identification identifier 460 to recognize, for example, the type of hand-held machine tool 80, for example, what quantity of particles is to be expected from this hand-held machine tool 80, what suction power is to be provided accordingly by the vacuum device 10, or the like.

[0143] The control unit 37 accordingly adjusts the function of the suction device 10, for example in such a way that the suction power of the suction motor 19 can be adjusted on the control switch 24, but not below a limit value that enables reliable extraction of the particles produced by the hand-held machine tool 80.

[0144] It is also possible for the control unit 37 to check whether operation of the hand-held machine tool 80 with the suction device 10 is possible at all, provided that at least one criterion is met. For example, if it is necessary for the suction device 10 to provide explosion protection in conjunction with the respective hand-held machine tool and / or a minimum predetermined extraction capacity of the suction device 10 is required for the minimum criterion to be met, the control unit 37 can determine whether the identification code 460 is specified in a table 430, which contains several identification codes. If this is the case, the control unit 37 enables the suction device 10 to be operated with the hand-held machine tool 80.

[0145] Depending on the tool 82 used on the hand-held machine tool 80, the type of particles can also vary, for example, comprising larger or smaller chips. Accordingly, it is advantageous for the hand-held machine tool 80 to send information about the tool 82 used to the vacuum cleaner communication devices 40 or 140, for example, as an operating parameter 450. Depending on the nature of the particles represented by the operating parameter 450, the control unit 37 can, for example, set cleaning intervals for a cleaning device 9 that cleans a filter 8 located upstream of the vacuum motor 19.

[0146] It is also advantageous for the hand-held machine tool 80 if the vacuum unit 10 registers itself, so to speak, before operation begins. For example, the vacuum unit communication device 40 sends an identification identifier 410 of the vacuum unit 10 and / or at least one operating parameter 400 to the hand-held machine tool 80.

[0147] For example, a control unit 88 on board the hand-held power tool 80 uses a check table to verify whether the identification code 410 classifies the suction device 10 in such a way that it can be used in conjunction with the hand-held power tool 80. Only then does the control unit 88 enable the drive motor 81. Otherwise, the control unit 88 blocks the drive motor 81, thus preventing, for example, health problems for a user of the hand-held power tool 80 caused by particles that are not extracted.

[0148] Based on the operating parameter 400, the suction unit 10 can, for example, inform the hand-held power tool 80 about the available suction power. The hand-held power tool 80 then reduces, for example, the maximum speed of the drive motor 81, so that even at the highest speed of the drive motor 81 adjustable via switch 87, the suction power of the suction unit 10 is sufficient to reliably extract all particles, or at least substantially all particles, from the working area of ​​the hand-held power tool 80.

[0149] Furthermore, the external communication devices 150 or 250 and / or the suction device communication devices 40 or 140 can, based on the respective received identification identifier, if the 410, 460 and / or the received operating parameters 400, 450, directly generate control signals and / or message signals and send them to the other communication devices.

[0150] For example, if the identification code 410 assigns the vacuum cleaner 10 to a specific performance class, the external communication devices 150 and / or 250 can use the identification code 410 to determine, for example, that the vacuum cleaner 10 must deliver a certain performance level and accordingly send a control signal 351, which instructs the vacuum cleaner 10 to set a specific performance level as a minimum level adjustable on the control switch 24. Of course, instead of the control signal 351, a message signal 352 can also be generated, which is displayed, for example, on the display 102.

[0151] The suction device 10 or the suction device communication devices 40, 140 can also be configured in this way. For example, the suction device communication devices 40, 140 and / or the suction device 10, for example the control unit 37, determine, based on the identification identifier 460 or the operating parameter 450, which speeds of the drive motor 81 of the hand-held machine tool 80 are to be set or adjustable and accordingly send a control signal 353 and / or a message signal 354 to the external communication devices 150 or 250. The control signal 353 instructs these to, for example, inform the control unit 88 which power settings of the drive motor 81 are to be adjustable at the switch 87.The information from message signal 354 is displayed, for example, on display 104, so that the operator knows which performance ranges should preferably be set on the hand-held machine tool 80 and / or which tools can be used, or the like.

Claims

1. Suction device (10) for separating particles from a suction stream (20), comprising a suction motor (19) for generating the suction stream (20) and a suction housing (11) in which the suction motor (19) and a dust collection chamber (15) for collecting particles separated from the suction stream (20) are arranged, wherein the suction device (10) is intended for extracting particles generated during the operation of a hand-held power tool (80) having a drive motor (81) for driving a tool (82), characterized by the fact thatThe suction device communication device (40; 140) has a communication device (40; 140) for communication with an external communication device (50; 150; 250) to be operated at a distance from the suction device housing (11) in connection with the hand-held machine tool (80), in particular forming a component of the hand-held machine tool (80), wherein the suction device communication device (40; 140) has a suction device transmitter (41s, 141s) for sending at least one control signal (108) and / or message signal (105) to the external communication device (50; 150; 250).

2. Suction device (10) according to claim 1, characterized by the fact that the suction device communication device (40; 140) comprises a suction device receiver (41r, 141r) for receiving control signals (51; 151, 251) and / or message signals (101, 201) sent by the external communication device (50; 150; 250).

3. Suction device (10) according to claim 1 or 2, characterized by the fact thatthe suction device communication device (40; 140) is designed for wireless and / or wired communication with the external communication device (50; 150; 250).

4. Suction device (10) according to one of the preceding claims, characterized by the fact that the suction device communication device (40; 140) is designed to send a warning signal to the external communication device (50; 150; 250) and / or a control signal that changes an operating state of the hand-held machine tool (80).

5. Suction device (10) according to one of the preceding claims, characterized by the fact that the suction device communication device (40; 140) is designed to send and / or receive at least one identification identifier (410, 460) and / or one operating parameter (400, 450) to or from the external communication device (50; 150; 250).

6. Suction device (10) according to claim 5, characterized by the fact thatit is designed to set at least one function of the suction device (10) and / or the hand-held machine tool (80) using at least one identification identifier (410, 460) and / or the operating parameter (400, 450).

7. Suction device (10) according to claim 5 or 6, characterized by the fact thatThe vacuum cleaner communication device (40; 140) is designed to send a control signal (351, 353) and / or a message signal (352, 354) to the external communication device (50; 150; 250) based on the received operating parameter (400, 450) and / or the received identification identifier (410, 460), wherein the control signal (351, 353) is advantageously provided for setting at least one function of the hand-held machine tool (80), in particular for controlling the drive motor (81) of the hand-held machine tool (80), and / or the message signal (352, 354) is advantageously provided for outputting information determined by the vacuum cleaner communication device (40; 140) or the vacuum cleaner (10), in particular a warning message.

8. External communication device (50; 150; 250) for interaction with a hand-held machine tool (80) and for communication with a vacuum device communication device (40; 140) of a vacuum device (10) according to one of the preceding claims, wherein the external communication device (50; 150; 250) forms a component of the hand-held machine tool (80) or is a module connectable to the hand-held machine tool (80), characterized by the fact that it has an external receiver (55r, 155r, 255r) for receiving the control signal (108) and / or message signal (105) from the suction device communication unit (40; 140) and / or an external transmitter (55s, 155s, 255s) for sending at least one wireless control signal (51, 151, 251) and / or message signal (101, 201) to the suction device communication unit (40; 140).

9. External communication device (50; 150; 250) according to claim 8, characterized by the fact thatit has an electrical energy storage device (57) and / or an energy generation unit, in particular an electrical generator (58) which can be driven by movements of the external communication device (50; 150; 250) or the suction current (20), so that it is designed to be self-sufficient, without an external power supply, for sending and / or receiving the at least one control signal (51; 151, 251) or message signal.

10. External communication device according to one of claims 8 or 9, characterized by the fact thatit is designed as an intermediate module (100) that can be arranged between a housing of a hand-held machine tool (80) and an energy storage module (90) for the electrical supply of the hand-held machine tool (80) and / or that it forms a component of a hand-held machine tool (80) or an energy storage module (90) for the electrical supply of a hand-held machine tool (80), in particular designed as a module, and / or that it has an interface (259) for communication with the hand-held machine tool (80), in particular wireless communication with its control unit (88), and / or that it has a switching device (258) for switching an electrical supply voltage or compressed air supply to the hand-held machine tool (80).

11. External communication device according to one of claims 8 to 10, characterized by the fact thatit is designed to send and / or receive at least one identification identifier (410, 460) and / or one operating parameter (400, 450) to or from the vacuum cleaner communication device (40; 140).

12. External communication device according to claim 11, characterized by the fact that it is designed to set at least one function of the suction device (10) and / or the hand-held machine tool (80) using at least one identification identifier (410, 460) and / or the operating parameter (400, 450).

13. External communication device according to claim 11 or 12, characterized by the fact thatit is designed to receive at least one identification identifier (410, 460) or operating parameter (400, 450) or both from a control unit (88) of the hand-held machine tool (80) and / or to send at least one identification identifier (410, 460) and / or operating parameter (400, 450) to the control unit (88) of the hand-held machine tool (80).

14. External communication device according to one of claims 8 to 13, characterized by the fact thatit is designed to control the hand-held machine tool (80), in particular a control unit (88) of the hand-held machine tool (80), and / or to enable communication between the hand-held machine tool (80), in particular with its control unit (88), using the control signal (108) and / or message signal (105) received from the vacuum communication unit (40; 140), and / or it is capable of being controlled by the hand-held machine tool (80), in particular its control unit (88), to send the control signal (51, 151, 251) and / or message signal (101, 201) to the vacuum communication unit (40; 140).

15. External communication device according to one of claims 8 to 14, characterized by the fact that it has a particularly acoustic and / or optical output means for outputting information received from the suction device communication device (40; 140), in particular the control signal (108) and / or message signal (105).