VACUUM CLEANER

Description

[0001] The invention relates to a vacuum cleaner for extracting dust generated by a machine tool, wherein the vacuum cleaner can be controlled by an electrical device in the form of the machine tool or an energy storage module for supplying electrical power to the machine tool, which has a drive motor for driving a tool holder, according to the preamble of claim 1.

[0002] Such a vacuum cleaner is known from DE 10 2012 003 073 A1. The vacuum cleaner has an external communication device designed as a module, with which it can communicate wirelessly with the machine tool, for example, a handheld power tool. To activate the dust extraction function, the machine tool or its energy storage module or battery pack sends corresponding switching signals to the vacuum cleaner. However, communication interference can occur in practice. Furthermore, other unauthorized wirelessly communicating devices, for example, other handheld power tools, can also switch the vacuum cleaner on or off.

[0003] US 2010 / 0199453 A1 relates to a vacuum system comprising a vacuum cleaner and machine tools, wherein a unique identifier is transferred from the machine tool to the vacuum cleaner.

[0004] DE 10 2013 222 313 A1 relates to a device system with two independently operable electrical devices that can be coupled to each other via a bidirectional interface in such a way that they can communicate bidirectionally with each other.

[0005] It is therefore the object of the present invention to provide an improved vacuum cleaner in comparison.

[0006] To solve the problem, a vacuum cleaner according to claim 1 and a method according to claim 14 are provided.

[0007] A fundamental aspect of the present invention is that the vacuum cleaner not only has its external communication device on board the vacuum cleaner housing, but also includes a further means of communication, namely the communication module, which is arranged outside the vacuum cleaner housing and can support or establish communication with the wireless communication interface of the electrical device, for example the machine tool or the energy storage module.

[0008] The communication module can be freely movable or, for example, attached to or attachable to the suction hose.

[0009] The vacuum cleaner is advantageously designed so that the suction inlet is connected to the suction unit via at least one filter and a suction channel arrangement. A collection bag or container, particularly designed as a filter bag, can be arranged or may be arranged in the dirt collection chamber for collecting dirt.

[0010] The drive motor of the machine tool is advantageously switchable via a switching element of the machine tool and / or the energy storage module. The wireless communication interface of the electrical device is expediently designed to send at least one registration message to the external communication device for establishing the control connection with the vacuum cleaner, depending on the switching state of the switching element. Thus, simply actuating the switching element of the machine tool is sufficient to establish the control connection with the vacuum cleaner. A separate operating element is not required for registration or establishing the control connection.

[0011] It is advantageous for the communication module to have a communication interface for wireless communication with the external communication device and / or with the wireless communication interface of the electrical device. The communication interface can be, for example, a Bluetooth interface, a WLAN interface, or the like.

[0012] The communication interface can perform both functions: communication with the external communication device located on board the vacuum cleaner housing and with the wireless communication interface of the electrical device, such as the energy storage module or machine tool. It should be noted, however, that the communication module can also have two or more different communication interfaces, one of which, for example, is for communication with the external communication device and another for communication with the electrical device. It is also possible that only one communication interface is present, either for the external communication device or for the wireless communication interface of the electrical device. Furthermore, the communication module can be connected to the vacuum cleaner via a wired or cable connection.The system communicates with the components located on board the vacuum cleaner, in particular the external communication device. For example, a communication line can run along the suction hose, on which the communication module is itself located.

[0013] An advantageous embodiment provides that the communication module can be operated as a gateway between the vacuum cleaner's external communication device and the electrical device's wireless communication interface, wherein the communication module forwards messages received by the vacuum cleaner to the electrical device and / or forwards messages received by the electrical device to the vacuum cleaner. The advantage of this is that the communication module can be located away from the vacuum cleaner housing, for example, on the suction hose, and can thus transmit messages from the electrical device to the vacuum cleaner, or from the vacuum cleaner to the electrical device, or both.Therefore, if, for example, the radio range of the external communication device or the wireless communication interface is insufficient or would potentially result in inadequate data transmission or message delivery, the gateway function of the communication module improves data exchange between the electrical device and the vacuum cleaner. It should be noted that while wireless communication with the electrical device is necessary or advantageous for the gateway function, wired communication between the vacuum cleaner housing and the communication module is also possible.

[0014] Preferably, the external communication device is provided that it is ready to establish a control connection with the electrical device in a standby mode and not ready to establish a control connection in an operating mode, and that the communication module is designed to switch the external communication device. Thus, the external communication device is not permanently ready to establish a control connection, but must be switched to a standby mode. This can be achieved, for example, additionally or instead of the communication module, by a registration control element provided on board the vacuum cleaner housing. For example, the external communication device is not ready to receive one or more registration messages from the wireless communication interface of the electrical device in the operating mode, but is ready to do so in the standby mode.

[0015] An advantageous embodiment of the invention provides that the communication module has a user-operated login control element, the activation of which causes the communication module to send a switching signal to put the external communication device into standby mode. The login control element comprises, for example, a button, a push button, a slide switch, or the like, so that it can be operated by a user. For example, it sends a corresponding control signal via the aforementioned communication interface to put the external communication device into standby mode when the login control element is activated.

[0016] A preferred embodiment provides that the communication module has at least one sensor, in particular a distance sensor and / or a motion sensor, for detecting the electrical device, especially its wireless communication interface. Using a distance sensor, motion sensor, or the like, the electrical device can be detected, for example, to determine whether it is moving relative to the communication module or what its distance is from the communication module. It is also possible for the sensor to detect the wireless communication interface of the electrical device, for example, by measuring the signal strength. The distance sensor can be, for example, an ultrasonic sensor, an optical distance sensor, or the like.

[0017] Advantageously, the at least one sensor is designed to detect relative movement between the communication module and the electrical device. For example, if the communication module and the electrical device move relative to each other, the sensor will detect this movement. Thus, if the electrical device moves towards the communication module, which is advantageously located on the suction hose, this sensor can determine that the electrical device is near the communication module, indicating that establishing or maintaining the control connection is necessary.

[0018] It is particularly preferred that the at least one sensor is designed to detect an assembly movement when attaching a suction hose to a suction outlet of the electrical device, in particular to detect a plugging-in movement. Thus, for example, when the suction hose is attached to the suction outlet of the electrical device, e.g., plugged in, twisted relative to the electrical device (e.g., with a bayonet lock), or the like, this is detected by the sensor. The sensor can also be designed to detect typical vibrations, deflections, or the like that occur specifically during the assembly movement of the suction hose to the suction outlet, e.g., a connection fitting, of the electrical device.The sensor is designed to detect at least one simultaneous movement, for example, in conjunction with a sensor or sensor transmitter located on the electrical device, the electrical device, and the communication module. Thus, if, for example, the electrical device and the communication module are moved parallel to each other, which is typical during operation or could also be a deliberate action by the operator, this is detected by the sensor.

[0019] It should be noted that the invention preferably provides a system in this embodiment that also includes the electrical device. In this case, the electrical device has a motion sensor for generating a motion signal depending on a movement of the electrical device, wherein the wireless communication interface of the electrical device is configured to send the motion signal to the communication module. If the communication module, so to speak, recognizes that it and the electrical device are being moved simultaneously by evaluating the motion signal of the electrical device, the simultaneous movement of the electrical device and the communication module can be detected. If only an assembly movement of the suction hose or the like on the electrical device needs to be detected, this can be accomplished by a single sensor on board the communication module.

[0020] As already mentioned, it is advantageous if the communication module is attached to, or can be attached to, the vacuum cleaner's suction hose. It is perfectly possible for the communication module to be permanently and inextricably attached to the suction hose.

[0021] Preferably, the communication module is arranged or can be arranged at a longitudinal end region of the suction hose, wherein the longitudinal end region is advantageously provided for connecting the suction hose to the suction housing or the machine tool or another suction hose.

[0022] One preferred option involves the vacuum cleaner or the communication module having a hose holder, such as a clamp, clip, or similar device, for the detachable attachment of the communication module to the suction hose. Hook-and-loop fasteners, other textile or plastic tapes, snap-fit ​​contours, clamping devices, or similar mechanisms are also suitable for detachably attaching the communication module to the suction hose. Alternatively, a module receptacle on the suction hose for receiving the communication module is also conceivable. For example, a plug-in receptacle or similar device could be provided on a connector of the suction hose into which the communication module can be inserted.

[0023] It is preferred that the vacuum cleaner housing has a module mount for the communication module. This allows the communication module to be positioned on the vacuum cleaner housing, for example when not in use or for special functions.

[0024] Furthermore, it is advantageous if the communication module can be arranged on or is already attached to the electrical device, for example, the energy storage module or the machine tool. The electrical device can also be provided with a corresponding module mount for the communication module.

[0025] An advantageous variant is designed if the at least one sensor is configured to detect simultaneous movement, particularly in conjunction with a sensor or sensor transmitter arranged on the electrical device, the electrical device, and the communication module. The module receptacle includes, for example, a plug-in receptacle, a plug-in holder, or the like.

[0026] According to the invention, the communication module is designed to control the vacuum cleaner independently of the electrical device and / or autonomously, for example, to switch the suction unit on and / or off. The communication module then acts as a type of remote control. In particular, it is possible for the communication module to be located away from the vacuum cleaner housing, especially on the suction hose or directly on the electrical device, in order to control the vacuum cleaner from there. The control can also include the transmission of parameters, in particular communication parameters or suction parameters (suction power, speed of the electric hand-held power tool, or the like).

[0027] The communication module advantageously has a switching element, in particular a push button, slide switch, rotary switch or the like, which can be operated or actuated by an operator. Depending on this operator action, the communication module controls the vacuum cleaner wirelessly, for example via the external communication device, or via a wired connection.

[0028] One embodiment of the invention provides that the communication module is designed as a program module containing executable program code by a processor of a computer separate from the control unit. The computer could be, for example, a smartphone, a tablet, a smartwatch, or the like. However, it is also possible for the communication module to be a smartphone, a smartwatch, or a separate computer.

[0029] Advantageously, the communication module for establishing and / or maintaining the control connection is designed to depend on the signal strength of a signal transmitted by the wireless communication interface of the electrical device, in particular a signal containing at least one registration message. For example, if the electrical device cannot transmit a minimum signal strength, it will not be accepted by the communication module for establishing or maintaining the control connection. The signal strength can be measured, for example, by the electrical device specifying a transmit signal strength in a registration message, with the communication module comparing this transmit signal strength with a receive signal strength and thereby obtaining or determining distance information for the distance between the communication module and the electrical device.

[0030] In the case of competing electrical devices for establishing the control connection, the communication module advantageously selects the device with the higher signal strength for establishing the control connection. Advantageously, the vacuum cleaner is provided with two communication modules, one of which is located near the vacuum cleaner housing, particularly on the suction hose, and the other communication module is located at an end of the suction hose farther from the vacuum cleaner housing. The communication modules communicate with each other to maintain and / or establish the control connection. The communication modules can, for example, act as gateways to bridge the communication distance between the electrical device and the vacuum cleaner housing, and thus the external communication device.

[0031] Preferably, the energy storage module comprises a module housing and an energy storage device housed within the module housing, in particular an arrangement with at least one rechargeable electrical storage cell, for providing electrical energy to power the machine tool or vacuum cleaner via supply contacts. The electrical storage cells, in particular an aggregation or an arrangement of several electrical storage cells, can be recharged, for example, by a charger. However, it is also possible that the energy storage device comprises, for example, a fuel cell or similar other electrical or chemical storage device that can ultimately provide electrical energy.

[0032] The energy storage module expediently has a module housing with a device interface for detachable connection to the machine tool. The device interfaces of the energy storage module to the machine tool or vacuum cleaner have matching supply contacts for the transmission of electrical energy and / or data contacts, in particular bus contacts, for data transmission.

[0033] A machine tool is a machine tool that generates dust and / or particles, for example, a saw, a drill, a milling machine, a grinding machine, or the like. In particular, a machine tool is a handheld machine tool. The machine tool expediently has a suction outlet, for example, a connection port, for attaching a suction hose.

[0034] The vacuum cleaner could also be generally referred to as a suction device. Naturally, the vacuum cleaner can suck up not only dust, but also larger particles produced by the machine tool.

[0035] It is preferred if the control connection can only be established or is established if the vacuum cleaner and the machine tool are connected to each other via the suction hose or a suction hose.

[0036] The machine tool and / or vacuum cleaner may be equipped with sensors or detection devices that recognize the connection of the suction hose. The control connection is only established when a suction hose is actually connected.

[0037] Exemplary embodiments of the invention are explained below with reference to the drawing. The drawing shows: Figure 1 is a perspective oblique view of a system according to the invention comprising a hand-held power tool and a vacuum cleaner; Figure 2 is a partial view approximately corresponding to detail D1 of the vacuum cleaner according to the invention. Figure 1 Figure 3 shows a perspective oblique view of a communication module of the vacuum cleaner according to Figure 1 Figure 4 shows a device interface of a machine tool according to Figure 1 Figure 5 shows an energy storage module of the system according to Figure 1 Figure 6 shows the energy storage module in oblique perspective. Figure 5 Shown from the other side in perspective, Figure 7 shows a charger for charging the energy storage module according to Figures 5 and 6, and Figure 8 shows a communication module of the system according to Figure 8. Figure 1 in perspective oblique view, Figure 9 the communication module according to Figure 8, however, with a fastening device for attachment to a schematically represented suction hose, Figure 10 a schematic functional representation of the communication module according to Figure 9, 10 Figure 11 shows a schematic circuit diagram of the energy storage module, a hand-held machine tool, and a communication module according to Figure 1 Figure 12 shows a schematic circuit diagram of the energy storage module according to Figure 4 in conjunction with the charger according to Figure 7 Figure 13 shows a perspective view of the other energy storage module according to Figure 1 in the charger according to Figure 7 attached state, Figure 14 a communication diagram between the vacuum cleaner according to Figure 1and an energy storage module, Figure 15 a schematically represented system with a vacuum cleaner arranged in a transport box and operable with an energy storage device, Figure 16 a diagram showing a relationship between a signal strength information and a response time.

[0038] Identical and similar components are subsequently identified in part by the same or similar reference symbols, indicated by the addition of A, B, etc.

[0039] A in Figure 1System 10, partially depicted schematically, comprises machine tools 20A and 20B, which are supplied with electrical energy by energy storage modules 40A and 40B. The machine tools 20A and 20B are dust- or particle-generating machine tools, and in particular handheld machine tools. For example, machine tool 20B is a grinding machine, and machine tool 20A is a saw, in particular a jigsaw, although a router or similar dust- or particle-generating electric machine tool or handheld machine tool would also be readily possible.

[0040] A drive motor 22 is arranged in a machine housing 21A, 21B of the machine tool 20A, 20B. This drive motor is designed to drive a tool holder 23A, 23B and thus a tool 38A, 38B located on the tool holder 23A, 23B. The tool 38A is, for example, a saw blade, and the tool 38B is a grinding pad. The drive motor 22 can drive the tool 23A, 38B directly or via a gearbox, e.g., a gearbox 22A for an oscillating movement.

[0041] The machine tool 20A, 20B can be switched on and off by means of a switching element 24, for example, an on / off switch. Another switching element 25 is designed, for example, as a speed controller or speed regulator. An embodiment is possible in which, for example, the speed of the drive motor 22 can be changed by a corresponding actuation stroke of the switching element 24.

[0042] The hand-held machine tool 20A, 20B has a control unit 26 for controlling the drive motor 22. The control unit 26 includes, for example, a processor 27 and a memory 28. The memory 27 stores one or more program modules 29, the program code of which can be executed by the processor 27 to control the hand-held machine tool 20A, 20B and / or to communicate with the energy storage modules 40A, 40B.

[0043] The machine tool 20A, 20B has a suction port or outlet 39 for connecting a suction hose 15, through which dust generated during operation of the tool 38A, 38B can be extracted. The suction outlet 39, for example a connection nozzle, communicates with extraction openings arranged on or in the tool 38B, which are not shown in the drawing. Thus, dust can be extracted directly from the tool 38A, 38B in a known and conventional manner.

[0044] A vacuum cleaner 70 of system 10 has a vacuum housing 71, which can be placed on a surface and / or rolled away, for example, on casters 71A, 71B. The vacuum cleaner 70 is a mobile vacuum cleaner. However, the vacuum cleaner 70 could also have the form of a stackable vacuum cleaner, i.e., a stackable housing, and / or a box-shaped form. The casters 71A, 71B are optional.

[0045] The vacuum cleaner 70 has a suction inlet 72 on the front of the vacuum cleaner housing 71, to which the suction hose 15 can be connected. The suction hose 15 extends between the machine tool 20A and the vacuum cleaner 70 with one longitudinal end 16, which is connected to the suction outlet 39A, and another longitudinal end 17, which is connected to the suction inlet 72. The machine tool 20B is connected to the vacuum cleaner 70 via a branch 18 of the suction hose 15. The branch 18 extends to the longitudinal end 16 and to a longitudinal end 19, which is connected to the suction outlet 39A of the machine tool 20B. The branch 18 of the suction hose 15 is, of course, optional. Alternatively, a suction hose can be provided that extends directly between a suction outlet 39 and the suction inlet 72 without a branch, as is known per se.

[0046] The vacuum cleaner housing 71 includes a dirt collection chamber 73, into which dust and other particles separated from a suction flow S, which is drawn in through the suction outlet 72, can be collected. A filter 74 is preferably provided above the dirt collection chamber 73. However, a filter bag suitable for collecting dirt and particles can also be arranged in the dirt collection chamber 73, either additionally or instead of the filter 74. The suction flow S, which is drawn in through the suction inlet 72, can be generated by a suction unit 75. The suction unit 75 is supplied with electrical current, for example, by means of a mains connection device 76. The mains connection device 76 includes, for example, a connection cable and a plug for connection to an electrical supply network EV, in particular with 220 V or 110 V AC.

[0047] The functions of the vacuum cleaner 70 can be controlled by a control element assembly 77. The control element assembly includes, for example, a switching element 78 with which the vacuum cleaner can be switched on or off, or switched into automatic operation, in which, for example, a current flowing via a socket 79 causes the suction unit 75 to be switched on and off. The socket 79 is expediently provided on the control element assembly 77. An electrical appliance, preferably an electric hand-held power tool 20C, can be connected to the socket 79.

[0048] The socket 79 has contacts 80, in particular sockets, into which contacts 32C of a plug 31C of the hand-held power tool 20C can be inserted. The plug 31C is attached to a connecting cable, which is part of a mains connection device 30C. When an operator activates a switching element 24 of the hand-held power tool 20C to energize its drive motor 22, which, for example, can drive a saw blade, current flows through the mains connection device 30C, supplied by the vacuum cleaner 70 via the socket 79. This current flow can be detected by a current sensor 81 in a manner known per se. A control device 86 of the vacuum cleaner 70 switches on the suction unit 75 in a manner known per se when current flows through the socket 79 and switches off the suction unit 25 when the operation of the hand-held machine tool 20C ends, i.e. when the current sensor 81 no longer detects a current flow, expediently with a run-on time.

[0049] The current sensor 82 is, for example, connected to an input / output interface 82 of the control unit 80. The input / output interface 82, for example a power electronics interface, is also used to control the suction unit 75.

[0050] The control unit 86 further comprises a processor 87 and a memory 88 in which one or more program modules 89 are stored. The at least one program module 89 contains program code that can be executed by the processor 87 and enables, among other things, one or more of the following functions.

[0051] The socket 79 can be connected to the supply network EV via the vacuum cleaner 70 or directly to the supply network EV, namely by means of the network connection device 30C.

[0052] The machine tools 20A and 20C, on the other hand, are equipped for cordless or wireless operation. They can be powered by the energy storage modules 40A and 40B.

[0053] The 40A and 40B energy storage modules are functionally similar in design, although mechanical and / or electrical differences regarding power supply capacity, voltage, or the like may exist.

[0054] The energy storage modules 40A, 40B have module housings 41A, 41B in which energy storage devices 42 are arranged. The energy storage devices 42 have one or more storage cells 43, in particular a storage cell arrangement with several storage cells 43, which are rechargeable.

[0055] A display device 44, which is optionally available on the energy storage module 40A, can indicate the charge status of the energy storage device 42, for example, acoustically and / or visually. The display device 44 includes, for example, a loudspeaker 44A, which can signal a low charge status, e.g., by means of a warning tone. Preferably, the display device 44 comprises an arrangement of one or more lights 45, for example, lights 45A, 45B, 45C, and 45D. The lights 45A-45D are preferably LEDs.

[0056] The functions of the energy storage modules 40A, 40B can be controlled by control devices 46.

[0057] The control devices 46 can be supplied with electrical energy directly by the energy storage device 42 and / or one or more of the storage cells 43. For example, supply lines 42X can be provided between the energy storage device 42 and the control device 46. A control device 46 can also include a supply module 46X for adapting a voltage or supply current provided by the energy storage device 42. Thus, each control device 46 can be supplied with electrical energy locally, regardless of whether the energy storage module 40 is connected to an electrical device, such as a charger, a machine tool, or a vacuum cleaner.

[0058] The control units 46, for example, have a processor 47 and a memory 48 in which at least one program module 49 is stored. For example, the control unit 46 can communicate with the control unit 26 of the hand-held machine tool 20A, 20B. The processor 47 can execute program code from the program modules 49, among other things to implement the functions explained in detail below.

[0059] The energy storage modules 40A, 40B can be connected to the machine tools 20A, 20B via device interfaces 30 of the machine tools 20A, 20B and device interfaces 50 of the energy storage modules 40A, 40B.

[0060] The machine tools 20A, 20B form first system components 11, the energy storage modules 40A, 40B second system components 12, which can be permanently connected to each other, so that they each form a system.

[0061] For this purpose, the device interfaces 30, 50 comprise contours that fit together in a form-fitting manner, for example, form-locking contours suitable for a rotary locking mechanism or, as in the present case, plug-in form-locking contours 51 on the device interface 50, which can be brought into form-locking engagement with plug-counter-form-locking contours 31 of the device interfaces 30, namely in the course of a plugging movement.

[0062] This plugging movement brings the device supply contacts 32 of the device interface 30 into contact with the supply contacts 52 of the device interface 50, so that electrical energy can be supplied from the energy storage device 42 via the supply contacts 52, 32 for the respective machine tool 20A, 20B, in particular its drive motor 22.

[0063] The device interfaces 30, 50 also include data contacts 33, 53 of data interfaces 34, 54, so that data communication, in particular bus communication between the system components 11, 12, is also possible.

[0064] For additional support beyond the positive locking concept based on the plug-in positive locking contours 51, 31, a fixing device 55 is provided, with which the system components 11, 12 can be fixed to one another. The fixing device 55 comprises, for example, a fixing element 56, in particular a latch, a locking element, or the like, which can be engaged with a fixing contour 35. The fixing contour 35 and the fixing element 56 are arranged on the first system component 11 and the second system component 12, whereby the reverse configuration is also readily possible. In this case, the fixing device 55 forms a locking device and / or a latching device. The fixing element 56 can be disengaged from, or optionally engaged with, the fixing contour 35 by means of an actuating element 57.For example, the fixing element 56 is a fixing projection / locking projection which can be brought into engagement with the fixing contour 35, which is designed as a fixing receptacle or recess. When the fixing device 55 enters its fixing or locking position, the plug-in form-locking contours 51 remain in engagement with the plug-in counter-form-locking contours 31, i.e., relative movement of the system components 11, 12 along the plug-in axis of the plug-in form-locking contours 51, 31 is not possible.

[0065] The actuating element 57 and / or the locking element 56 are spring-loaded into the locking position or the locked position by a spring arrangement (not visible). Thus, the locking device 55 can be moved from the locking position to the unlocked position by a simple push or press of the actuating element 57. On the energy storage module 40A, a locking element 56 and an actuating element 57 are preferably provided on opposite sides, while on the energy storage module 40B only a single push button or a single actuating element 57 is required.

[0066] The energy storage modules 40A and 40B can be charged using a charger 220. The charger 220 has a charger housing 221, which is equipped with a device interface 230. The device interface 230 has mating mating contours 231 that are positively compatible with the mating contours 51 of the energy storage modules 40A and 40B. A locking mechanism is not necessary for stationary operation. Corresponding to the device interface 50, the charger 220 also has device power supply contacts 232 and data contacts 233 of a data interface 234, preferably a bus interface. The charger 220 preferably includes a voltage converter 235, which can be supplied with electrical current via a mains connection device 236 and provides a DC voltage at the device supply contacts 232 for charging the energy storage device 42.The connector 237 forms part of a mains connection device 236 and can be arranged directly on the charger housing 221 or connected to the charger housing 221 via a cable, which is shown schematically. The connector 237 can be connected to the power supply network EV.

[0067] Data interfaces 34, 54, and 234 are bus interfaces. For example, bus interfaces or data interfaces 34, 54, and 234 are I²C bus interfaces. These bus interfaces comprise a clock line CL, a data line D, and a power supply line VD, to which data contacts 33A, 53A, and 234A are assigned; a clock line CL, to which data contacts 33B, 53B, and 233B are assigned; and a data line D, to which data contacts 33C, 53C, and 234C are assigned. The power supply line VD provides device interface 50 with an electrical supply voltage, for example, a bus voltage UB. The clock line CL provides a bus clock signal for the bus BU implemented at data interfaces 34, 54, and 234.Data is transmitted via the data line D, preferably bidirectionally from the energy storage module 40 to the machine tool 20 and vice versa and / or from the energy storage module 40 to the charger 220 and vice versa.

[0068] When the system components 11 and 12 are connected, the energy storage module 40 provides a supply voltage UV at the supply contacts 52A and 52B, which is suitable for operating the drive motor 22. The supply voltage UV is, for example, a DC voltage of 15 volts or 18 volts, but can also be any other voltage. It should be noted here that an energy supply module could, of course, also provide an AC voltage. This is not important. The control unit 26 of the machine tool 20A and 20B, hereinafter referred to simply as machine tool 20, controls the drive motor 22 depending on the actuation of the switching element 24, for example by opening or closing a switch 24A. Instead of the switch 24A, power electronics, for example a current supply unit for an electronically commutated drive motor 22, can also be provided.Furthermore, it is conceivable that the switching element 24 is directly connected in the circuit of the drive motor 22 and can thus switch it on and off. When the switch 24A is closed, current flows from the energy storage device 42 via line L1 to the drive motor 22 and from there back to the energy storage device 42 via line L2.

[0069] During a charging process, this current flow concept is exactly reversed, which can be seen from... Figure 12This becomes clear. In this case, a charging current IL flows from the voltage converter 235 via line L1 to the energy storage module 42. Supply contact 232B, like supply contact 52, is assigned to line L2, for example, a ground line. The charging process is preferably controlled by a control unit 226 of the charger 220. The control unit 226 can, for example, activate switch 238 to start or stop the charging process. To monitor the charging process, the charger 220 also communicates with the energy storage module 40, namely via the data interface 234 and the associated data contacts 233A, 233B, and 233C for the supply line VD, the clock line CL, and the data line D. Through corresponding communication on the bus BU between the charger 220 and the energy storage module 40, the state of charge of the energy storage module 42, its nominal voltage, or similar information can be queried.For controlling and monitoring the charging process, the charger 234 has, for example, a processor 27 that can execute control commands or program code from a program module 229 to control the charging process. The processor 227 is connected to a memory 228 of the control unit 226 of the charger 220, in which the program module 229 is stored.

[0070] The vacuum cleaner 70 can be controlled wirelessly or without a cable. For this purpose, the vacuum cleaner 70 has an integral external communication device 100, preferably designed as a module. The external communication device 100 can be detachably arranged in a module receptacle 90 on the vacuum cleaner housing 71. The module receptacle 90 is arranged, for example, in the area of ​​the control element assembly 77, in particular on a front panel 95 on which the control element assembly 77 is provided. When the communication module in the form of the external communication device 100 is inserted into the module receptacle 90, contacts of contact arrangements 90, 101 of the module receptacle 90 and the communication device 100 come into contact with each other. Thus, data, information, electrical supply voltage, and the like can be transmitted.For example, the control unit 86 supplies the external communication device 100 with the electrical supply voltage via the contact arrangement.

[0071] Furthermore, a data interface 83 of the control unit 86 and a data interface 108 of the external communication device 100 are connected to each other by means of the contact arrangements 101 and 91. The data interfaces 83 and 108 include, for example, a bus interface via which the external communication device 100 and the control unit 86 can communicate data and information.

[0072] Data interfaces 108 and 83, for example, implement a bus connection, in particular an I²C bus connection. Other bus communication methods are also possible. Furthermore, data interfaces 83 and 108 can also include individual data contacts, for example, for parallel data transmission.

[0073] The module receptacle 90 comprises side walls 92 extending from a base 93 of the module receptacle 90 to the front wall 50. The contact arrangement 101, projecting from a rear surface 103 of a front wall 105 of the external communication device 100, can engage with or come into contact with the contact arrangement 91 located on the base 93 of the module receptacle 90, within the module receptacle 90, i.e., in the interior space between the side walls 92 and the base 93. In this case, the side wall surfaces 101 of the front wall 105 are flush with the side walls 92, so that a front surface or the front wall 105 of the external communication device 100, as shown in Figure 1The module is shown to be flush with the front wall 95. The plug connection of the module of the external communication device 100 in the module receptacle 90 alone ensures a reliable hold. For further fixation, a fixing device, for example a locking device, clamping device or the like (not shown in the drawing), is preferably provided. In this case, a screw connection is provided. For example, one or two screw receptacles 94 are provided on the module receptacle 90, which are flush with screw receptacles 104 of the external communication device 100 when the latter is inserted into the module receptacle 90. Screws can be inserted into the screw receptacles 104, 94. Figure 1 The indicated screws are screwed in.

[0074] The vacuum cleaner 70 can be controlled wirelessly and / or without cables using the external communication device 100, for example via a wireless communication interface 60 of the energy storage module 40A or 40B.

[0075] It should be noted here that the wireless communication interface 60 is to be understood as an example of wireless control of the systems comprising system components 11 and 12, namely an energy storage module and a machine tool, respectively. For example, the machine tool 20C can be equipped with a wireless communication interface 60C to directly perform one or more of the communication functions described below, i.e., without a separate energy storage module 40, which has a wireless communication interface, to communicate wirelessly with the vacuum cleaner 70.

[0076] The external communication device 100 can be switched from a working mode, in which no control connection with the external communication device 100 can be newly established or restored, to a standby mode using a registration control element 160.

[0077] The standby mode or the operating mode is signaled visually and / or audibly by the external communication device 100. For example, a display device 114 is provided that can signal different operating modes of the external communication device 100. The display device 114 includes, for example, a light indicator, in particular an annular light indicator. The display device 114 is arranged, for example, around or on the registration control element 106. The registration control element 106 is, for example, a push button 107, around which the display device 114 preferably extends in an annular shape.

[0078] When the indicator device 114 is continuously illuminated, it signals an established control connection, i.e., the "connected" status. When the external communication device 100 is switched from operating mode to standby mode using the login control 106, the indicator device 114 illuminates, for example, in a different color or with a different movement pattern, in particular a slow, circular movement pattern. This movement pattern or the color of the indicator device 114 can depend on the type of control connection. If a control connection, as explained below, is a temporary control connection currently being established and / or already established, the indicator device 114 may, for example, have a slowly circular illuminated display. However, if a control connection is to be permanently established or established, i.e.,When the standby mode is suitable for establishing a permanent control connection, the indicator device 114 illuminates differently. For example, the circular illumination of the indicator device 114 then occurs at a higher frequency.

[0079] For a permanent control connection, a communication module 300 is provided, which preferably forms a system component of the vacuum cleaner 70 and is connected to the external communication device 100.

[0080] The communication module 300 is a communication module that is or can be arranged outside the vacuum cleaner housing 71. The communication module 100 serves to maintain and / or establish a control connection between the electrical device, in the form of one of the system components 11 and / or 12, and the vacuum cleaner 70, in particular the external communication device 100.

[0081] The communication module 300 has a module housing 301, which can be positioned on the suction hose 15. The module housing 301 conveniently has a switching element 334 on its upper surface 302, with which the suction unit 75 can be switched on and / or off. The switching element 334 ergonomically occupies a large portion of the upper surface 302, making it easy to operate. The switching element 334 is, for example, a push button, rocker switch, or the like.

[0082] The module housing 301 has a shape adapted to the suction hose 15. For example, a bottom wall 306, which rests against the outer circumference of the communication module 300 when mounted on the suction hose 15, has a rounded contour adapted to the round outer circumference of the suction hose 15. A front wall 303, a rear wall 304, and longitudinal side walls 305 extend between the bottom wall 306 and the top or top wall 302. These define an interior space in which a control unit 336 of the communication module 300 is protected.

[0083] The control unit 336, for example, has a processor 337, a memory 338 and at least one program module 339, which includes program code that can be executed by the processor 337 to perform the functions of the communication module 300, which will be explained later.

[0084] For mounting the communication module 300 on the suction hose 15, hooks 301 are provided on the longitudinal side walls 305. Thus, the module housing 301 has a hook 307 on each of its opposite sides. Each hook 307 has a hook projection 308 and a hook recess 309. The hooks 307 serve to attach a hose holder 320 (70, 870igur 8), for example, a clamp 321. The hose holder 320 has hook receptacles 323 at each of its longitudinal end regions 322, which can be engaged with the hooks 307. Of course, other fastening technologies are also possible, for example, using a hook-and-loop fastener or the like. It is also conceivable to integrate a communication module 300 at the longitudinal ends 16 and / or 17 of the suction hose 15, for example if corresponding pipe bodies are provided there, e.g. connection pieces or connection nozzles made of rubber, plastic or the like.The communication module 300 can also be glued, welded, or otherwise attached to the suction hose 15. However, this does not significantly affect the communication functions of the communication module 300. Nevertheless, the ergonomically favorable arrangement on the suction hose 15 is advantageous.

[0085] A registration control element 316 is provided for switching the external communication device 100 from operating mode to standby mode. The registration control element 316 includes, for example, a push button 317. The functions of the registration control element 316 correspond to those of the registration control element 106, so that the operator encounters virtually the same operating concept.

[0086] Accordingly, a display device 314 is designed in the same or a similar way to the display device 114. The display device 314 includes, for example, a light indicator that signals information relating to the establishment and / or the existence of a control connection between the communication module 300 and the external communication device 100.

[0087] For example, when an operator activates the login control 316, in particular by pressing the button 317, a communication interface 311, in particular a Bluetooth interface, a WLAN interface, or the like, sends a corresponding control signal, in particular a switching message SN, to the communication interface 110 to switch to standby mode. This switches the external communication device 110 into standby mode, which is signaled by the display device 314. Activating the login control 316 therefore causes the external communication device 100 to switch from operating mode to standby mode. Preferably, an encrypted and / or authenticated connection is provided between the communication module 300 and the external communication interface 110 for sending the control signal.

[0088] When the switching element 334 is actuated, the communication module 300 sends a start command or switch-on command for the suction unit 75 to the external communication device 100 and thus to the control unit 86 of the vacuum cleaner 70. Using a switching element 335, for example a rotary element, a sliding element, or the like, the communication module 300 can send a control command to the external communication device 100 and thus to the vacuum cleaner 70, which, for example, allows the speed of the suction unit 75 and / or its power to be adjusted. Therefore, the communication module 300 can serve as a remote control for the suction unit 75. A secure and / or encrypted control connection between the communication module 300 and the external communication device 100 is also advantageous for the remote control functions.

[0089] Since the communication module 300 is a system component of the vacuum cleaner 70, a control connection from the communication module 300 to the external communication device 100 is, in effect, a permanent control connection. Establishing such a control connection requires a higher degree of complexity than establishing a control connection between a system component 11 or 12 and the vacuum cleaner 70. Accordingly, for example, the registration control element 106 and / or 316 must be actuated for a longer period to authorize or register the communication module 300 with the vacuum cleaner 70 or the external communication device 100. In contrast, a registration procedure to establish a control connection between one of the system components 11 or 12, for example, the energy storage module 40, and the external communication device 100, is easier to establish, for example, by acting on the registration control element 106 and / or 316 for a shorter time.

[0090] The machine tools 20A and 20B communicate with the vacuum cleaner 70 via the energy storage modules 40A and 40B, and can control it via control connections S1 and S2. However, control commands cannot be sent directly via control connections S1 and S2, but only after prior registration / authorization of the machine tools 20A and 20B with the external communication device 100. Therefore, the respective control connection S1 and S2 must first be established before it is available for the transmission of control commands and / or message signals between the remote components 20A and 70, and 20B and 70, respectively.

[0091] The configuration is such that the machine tools 20A and 20B do not communicate directly wirelessly with the vacuum cleaner 70, but rather via their assigned and attached energy storage modules 40A and 40B. However, it is quite possible that the communication described below in connection with the wireless communication interface 60 can also be implemented with the machine tool 20B, for example directly (not shown), similar to the control connection S2, or indirectly via the communication modules 300B and 300C, as will become clearer later.

[0092] Essentially, the energy storage modules 40A and 40B act as gateways for the machine tools 20A and 20B for wireless communication, particularly in the control direction, i.e., from the machine tool 20A and 20B to the vacuum cleaner 70. However, the reverse communication direction, from the vacuum cleaner 70 to the machine tools 20A and 20B, is also possible via the "gateways" 40A and 40B.

[0093] To make these functions particularly easy to implement, the 20A and 20B energy storage modules are intelligent enough to detect, for example, whether they are connected to a device that requires or even enables wireless communication with the 70 vacuum cleaner, or to another device, such as a power tool unsuitable for vacuum cleaner operation, like a screwdriver, glue gun, or similar. Specifically, the 40A and 40B energy storage modules can detect whether they are connected to the 220 charger.

[0094] For example, the charger 220 sends a query message 700 via the bus interface BU to the control unit 46, requesting information about the current state of charge of the energy storage device 42, the state and / or maximum charging voltage for the storage cells 43, maximum charging currents, or similar parameters. The control unit 46 responds with a reply message 701 containing the relevant information. Based on the quality of the query message 700—for example, the fact that it requests the maximum permissible charging current—the energy storage module 40 can recognize that it is connected to a charger and not to an electrical device such as the machine tool 20A or 20B, which requires a wireless communication connection with a vacuum cleaner.

[0095] However, other information can also be evaluated by the energy storage module 40 to detect the connection to a charger of the type of charger 220. For example, a charging voltage UL provided by the charger 220 is higher than a supply voltage UV, which is present when an electrical load is connected between lines L1 and L2 or the supply contacts 52A, 52B.

[0096] The control unit 46 is supplied with electrical energy via the bus interface or data interface 54. The supply voltage UB2, which is provided by the charger 220 and is present at the supply line VD or data contact 53A, differs in voltage level from the supply voltage UB1, which the electric hand tool 220 provides at data contact 53A. For example, the supply voltage UB1 is 3 volts, and the supply voltage UB2 is 5 volts.

[0097] At the data interface 54, for example, a voltage measuring device 61, in particular a voltage sensor, a resistor circuit or the like, is provided to detect the different voltage levels of the voltages UB1 and UB2, so that the control device 46 can recognize whether it is connected to a charger (charger 220) or to an electrical consumer or an electrical machine tool of the type of machine tools 20A, 20B.

[0098] It is possible that the control unit 46 changes the operating mode of the wireless communication interface 60 depending on whether the energy storage module 40 is connected to a machine tool 20 or to the charger 220. For example, the control unit 46 activates the wireless communication interface 60 when the energy storage module 40 is connected to a machine tool 20, while it deactivates the wireless communication interface 60 when the energy storage module 40 is connected to the charger 220.

[0099] It is also possible that the control unit 46 does not deactivate the wireless communication interface 60 when the energy storage module 40 is connected to the charger 220, but rather changes the communication mode. For example, the wireless communication interface 60 can remain active for communication with the configuration unit 500 (to be explained later), in particular a smartphone, even when the energy storage module 40 is not connected to the machine tool 20, for example, when it is connected to the charger 220 or has no such connection. Using the configuration unit 500, for example, the smartphone, program data or the like can be transmitted to the energy storage module 40, even when it is not connected to the machine tool 20.

[0100] However, if the energy storage module 40A or 40B is connected to the machine tool 20A or 20B, wireless communication with the vacuum cleaner 70, in particular its external communication device 100, is possible without problems and simply.

[0101] A functional and communication sequence 400 begins, for example, with an operating action 401 by an operator N. The operator N of the system 10, for example, connects the vacuum cleaner 70 to the supply network EV or operates the switch or switching element 78 in such a way that the vacuum cleaner is basically ready for operation, i.e., has a function 410 "state in operation".

[0102] A control unit 117 of the external communication device 100 then switches to a state 411 in which the external communication device searches for devices already authorized to control the vacuum cleaner 70. This state 411 lasts, for example, a predetermined time, in particular one or two minutes, after which it ends. This time limitation is an option that reduces the risk of unauthorized access to the vacuum cleaner 70.

[0103] To execute this functionality and the following functionalities, the control device 116, for example, has a processor 117 for executing the program code of a program module 119, which is stored in a memory 118 of the external communication device 100.

[0104] For example, function 412 of program module 119 enables the acquisition of information from the login control element 106. Thus, if the operator, for instance, activates the login control element 106 in step 413, in particular by pressing it, function 412 reports this back to the operator N by means of an output command 414. This is done by controlling the display device 114 so that the operator can see that the external communication device 100, and therefore the vacuum cleaner 70, is ready to establish new control connections. The external communication device 100 enters a state 415, namely an operational readiness mode, in which a control connection with the external configuration device 100 can be established.

[0105] At the beginning of the functional and communication sequence 400, the communication module 400 is in a state 430 "Sleep," i.e., inactive. From this point, several scenarios are possible for establishing one of the control connections S1 or S2, the first of which is described below: For example, the operator N activates the switching element 24 of the machine tool 20A to switch it on. However, the machine tool 20A, or rather the associated energy storage module 40A, is not yet authorized to issue switching commands or control commands to switch on the suction unit 75. Such registration or authorization occurs automatically, so to speak, when the operator N simply activates the switching element 24.

[0106] When the operator N activates the switching element 24, the communication relationship between the machine tool 20A and the energy storage module 40A is activated and / or established. The energy storage module 40, i.e., each of the energy storage modules 40A, 40B, recognizes from the operating information triggered by the activation of the switching element 24 that a device suitable for establishing and using a control connection is connected to the device interface 50.

[0107] The energy storage module 40 can, for example, detect that an electrical load is connected based on the supply voltage UV. The voltage UV differs from the voltage UL of the charger 220.

[0108] Another piece of operating information can be, for example, the supply voltage UB1, which is provided by the control unit 26 at the supply line VD or the data contact 53a. The supply voltage UB1 differs from the supply voltage UB2 of the charger 220, and is in particular lower. Thus, the supply voltage UB1 also serves as an indicator of the actuation of the switching element 24.

[0109] Furthermore, initialization communication on the BU bus from the control unit 46 can be evaluated as an indicator of the activation of the data interface 54 by a device controlling the vacuum cleaner 70, i.e., the machine tool 20A or 20B (hereinafter referred to simply as machine tool 20). For example, a request message 750 can be sent from the control unit 26 to the control unit 46, querying, for instance, the available supply voltage UV of the energy storage module 40. The request message 750 can also contain data identifying the electrical device or the machine tool 20, for example, an identifier 751 that characterizes the machine tool 20A or 20B as requiring dust extraction. The request message 750 represents, for example, operational readiness information for the machine tool 20.With a reply message 752, the control unit 46 answers the request message 750 and provides the requested and / or information, for example, the state of charge of the energy storage module, etc.

[0110] Thus, triggered by the actuation of the switching element 24, the energy storage module 40 sends a registration message 440 to the external communication device 100 via the wireless communication interface 60 in a function 431, for example of the program module 419, as part of a transmission process 432.

[0111] The registration message 440 includes, for example, a broadcast sender identification 44x, i.e., a registration message addressed to multiple vacuum cleaners that are fundamentally ready to receive, not just vacuum cleaner 70. Furthermore, the registration message 440 optionally specifies an authorization parameter 442. The authorization parameter 442 includes, for example, a basic system compatibility between the energy storage module 40 or the machine tool 20 and vacuum cleaner 70. The authorization parameter 442 may, for example, include a manufacturer identifier or the like.

[0112] The external communication device 100 receives the registration message 440 using function 416. Function 416 is active for a predetermined period, for example, 500 ms to 1000 ms, because the registration procedure with the registering energy storage module 40 must be completed within this time. The external communication device 100 confirms the registration of the energy storage module 40 with a registration confirmation message 445. The registration confirmation message 445 is sent in a single step or transmission operation 417. The registration confirmation message 445 includes, for example, the address identifier 446 of the energy storage module 40 as the sender address. Optionally, further information 447, such as an access key, a password, or the like, can be included in the registration confirmation message 445.The information 447 can also, for example, indicate a required or adjustable suction power of the suction unit 75, or other similar information that is beneficial for later operation.

[0113] The registration of the energy storage module 40 with the external communication device 100 is, however, only a temporary registration necessary for current operation. Accordingly, a temporary identifier 443 is advantageously included in the registration message 440, so that the external communication device 100 knows, so to speak, that only a temporary registration or control connection is desired.

[0114] At this point, a difference becomes clear compared to the so-called permanent registration of, for example, the communication module 300. Registering the communication module 300 requires a more cumbersome or difficult operating action by the operator N, namely, for example, a longer activation of the registration control element 106 than for a temporary registration. In a standby mode for a permanent control connection or communication relationship, the external communication device 100 outputs a different signal to the display device 114 when issuing the output command 414 compared to the registration for a temporary control connection; for example, the LEDs blink faster or at a shorter frequency. Finally, in a registration message comparable to the registration message 440, the communication module 300 does not specify the temporary identifier 443, but rather a permanent identifier.

[0115] If the wireless communication interface 60 or the energy storage device 40 is successfully registered with the vacuum cleaner 70 or the external communication device 100, both components enter a state 418 "Connected". The permanently registered communication module 300 would also enter this state. It should also be noted that function 431 advantageously includes a time limit. If no registration confirmation message 445 is received within a predetermined or adjustable time, for example, 500 to 1000 ms, after switching on the switching element 24 and / or after sending the registration message 440, the registration attempt has failed.

[0116] Starting from state 418 "Connected", an authentication procedure and / or an encryption procedure is advantageously provided. The subsequently established control connection S1 or S2 should advantageously be authenticated and / or encrypted.

[0117] For example, the external communication device 100 transmits with an encryption parameter 451. If previous encryption or communication already existed between the external communication device 100 and one of the energy storage modules 40A, 40B, the external communication device 100 accesses these existing parameters. For example, the address identifier 446 and the associated encryption parameter 451 from a previously existing control connection to the energy storage module 40A, 40B are stored in memory 118 of the external communication device.

[0118] For example, it is mentioned that other address identifiers and associated encryption parameters may also be stored in memory 118, such as an address identifier 446C of the wireless communication interface 60C and an encryption parameter 451C for a control connection between the wireless communication interface 60C of the machine tool 20B and the external communication device 100.

[0119] It should also be mentioned at this point that if no encryption parameters are known for the respective energy storage module 40, the external communication device 100 sends the encryption parameter 451 or a new, different encryption parameter 456 by means of a message 455, so that encrypted communication between the components 100, 40 is possible and thus the state 421 "encrypted connection" is achieved.

[0120] Optionally, the external communication device 100, in particular its control unit 116, controls the display unit 114 (step 423A) so that it signals the existing, encrypted connection. For example, the display unit 114 then lights up continuously.

[0121] It is also possible for an energy storage module to store multiple address identifiers and / or encryption parameters. For example, energy storage module 40 or control device 46 may be configured to store address and encryption data for another vacuum cleaner not shown in the drawing, namely, for example, an address identifier 441B and an encryption parameter 451B for this other vacuum cleaner. Thus, energy storage module 40 can also access another vacuum cleaner directly when needed.

[0122] Returning to the function communication sequence 400, further communication then proceeds, for example, as follows: In a function 433 "Switch on", the energy storage module 40, in a transmission process 434, sends, for example, a control command 460 to the control unit 46, which contains a switch-on identifier 461. In addition, in an activation step 435, the control unit 46 activates the display unit 44 to indicate the established control connection S1 or S2. For example, the lights 445 then illuminate blue or in a pattern other than that used to indicate a charge level.

[0123] Upon receiving the control command 460, the external communication device 100, for example, activates the control unit 86, which in step 422 switches on the suction unit 75. Furthermore, the external communication device 100, in particular its control unit 116, activates the display unit 114 (step 423), so that it signals the activation of the suction unit 75. For example, the display unit 114 then illuminates continuously.

[0124] When the operator N releases the switching element 24, the current flow through the drive motor 22 is terminated, for example. This can be detected by the control unit 46, for example, using a corresponding current sensor 62. The supply voltage or bus voltage UB1 is also lower in this case. Furthermore, it is possible that the energy storage module 40 actively sends a message 753 "Motor switched off" via the data interfaces or bus interfaces 34, 54. One or more of these trigger events, which are triggered by the operator step 403 of the operator N, lead to a function 436 "Switch off" of the energy storage module 40. This then sends a control command 462 in a transmission process 437 to switch off the suction unit 75, preferably after a predetermined overrun time for the suction unit 75, wherein the message or control command 462 contains a switch-off identifier 463.The switch-off identifier 463 may, for example, specify a run-on time for the vacuum cleaner 70 or the suction unit 75.

[0125] The request message 750 and the message 753 form reception information EM, which the energy storage module 40 receives at the data interface 54 in order to output transmission signals SII, namely, for example, the registration message 440, at the wireless communication station 60.

[0126] For example, the reply message 445 is a received signal ESI, based on which the energy storage module 40 outputs the reply message 752 as a transmitted information SM at the data interface 54.

[0127] In function 427 "Switch off", the communication device 100 directly or via the control unit 86 controls the suction unit 75 to switch off and the display device 114 to indicate that the control has been completed. For example, function 427 sends a control command 425 to the suction unit 75 directly or via the control unit 86, namely the data interfaces 83 and 108.

[0128] When the switching element 24 of the machine tool 20 is actuated again, the energy storage module 40 can send further subsequent control commands 460 and 462 to switch the suction unit 75 on and off. Advantageously, it is provided that after a predetermined time, the respective control connection between the energy storage module and the external communication device 100 is terminated, so that, for example, the external communication device enters a state 428 (corresponding to state 411) and searches for authorized devices to establish a control connection. The energy storage module 40, on the other hand, enters a state 439, namely a "sleep" state, corresponding to state 430.When the control connection from the energy storage module 40 to the external communication device 100 or the vacuum cleaner 70 is terminated, function 436 expediently outputs this new operating state to the display device 44, for example by controlling the display device 44 in a deactivation step 438 to signal the terminated control connection. The lights 45 then, for example, no longer light up blue, but green, indicating the charge level of the energy storage device 42.

[0129] Furthermore, it is possible for the machine tool 20 to send a configuration message 754 to the energy storage module 40 via the bus BU. The configuration message 754 contains, for example, configuration data 755 for setting the vacuum cleaner 70, such as the required suction power of the vacuum unit 75, a typical particle quantity in the dust generated by the machine tool 20, etc. The energy storage module 40 preferably forwards this data via the wireless communication interface 60 to the external communication device 100 for configuring the vacuum cleaner 70, for example as a configuration message 465. The external communication device 100 forwards the configuration data 755 to the control unit 86 for further processing, in particular for suitable control of the vacuum unit 75, e.g., by means of a transmission process 437'.

[0130] It is preferred that the control device 86 and / or the external communication device 100 permanently store the configuration data 755 and assign it to the respective machine tool 20A and 20B, for example in memory 88 and / or 118.

[0131] Furthermore, it is advantageous if an operator can override the stored configuration, for example by actuating the control element arrangement 77. For example, the suction power of the suction unit 75 can be adjusted at a switching element 78A.

[0132] It is possible that suction parameters set directly on the vacuum cleaner by an operator, in particular suction parameters set on the switching element 78A or other operating elements of the control element arrangement 77, are permanently stored by the control unit 86 and / or the external communication device 100 and assigned to the respective machine tool 20A and 20B, for example in memory 88 and / or 118, when the vacuum cleaner is currently being controlled by the respective machine tool, for example one of the machine tools 20A or 20B. In this scenario, it is possible, but not absolutely necessary, for the configuration data 755 or suction parameters to be transmitted wirelessly from the machine tool 20A or 20B.

[0133] However, a control connection can also be established automatically when an energy storage module 40 and a machine tool 20 are connected. This is explained below using the example of one of the energy storage modules 40. It is also possible, for example, that the wireless communication interface 60C automatically establishes a control connection to the vacuum cleaner 70 or the external communication device 100 when the energy supply from the energy storage module 40 begins or when the module is connected to the device interface 30.

[0134] For example, the energy storage module 40 and / or the machine tool 20 can have capacitance sensors 66, 36 with which capacitances C1 and C2 between the supply contacts 32A, 32B and 52A, 52B respectively can be measured.

[0135] The capacitive conditions between lines L1 and L2, i.e., at the power supply contacts or lines, change when a respective energy storage module 40 is attached to a machine tool 20. Sensors 36 and 66 are connected to or communicate with control units 26 and 46. Thus, for example, when sensor 66 detects that the machine tool 20 is connected, i.e., that an operating state has been reached, control unit 46 can automatically send the registration message 440.

[0136] To detect a disconnection state or an operating state between an energy storage module 40 and a machine tool 20 and / or a vacuum cleaner, at least one verification message, in particular exclusively intended for checking the operating state or disconnection state, can be provided on a data interface, for example the bus interface BU. For example, a type of ping message can be provided for this purpose. The processor 27 and / or a processor 27A specifically provided for the aforementioned purpose in the machine tool 20 or the charger 220 can, in particular, cyclically send a verification message CK, based on which the energy storage module 40 recognizes, for example, whether it is connected to the machine tool 20 or the charger 220 or whether there is no connection to such a device.It is possible that processor 47 or a processor 47A specifically designated for this message is present at energy storage module 40 to receive the verification message CK. Processor 47 and / or 47A can, for example, send a response message RP in reply to the verification message CK.

[0137] It is also possible to detect by sensory means whether an energy storage module 40 and a machine tool 20 are in a separate state or in a connected operating state, namely when the device interfaces 30, 50 are connected to each other.

[0138] For example, a sensor 58 can detect the actuation of the actuator 57 of the locking device 55. When an operator presses the actuator 57, thus releasing the locking device 55, this is interpreted as a transition from the operating state to the disconnected state. In this case, the energy storage module 40, in particular the wireless communication interface 60, can automatically terminate the control connection S1 or S2. For this purpose, the wireless communication interface 60 sends, for example, a corresponding disconnect command or a disconnect message. It is particularly preferred if the vacuum cleaner 70 can also be switched off by actuating the actuator 57, since components 20 and 40 are disconnected from each other. For example, when the actuator 57 is actuated, which can be detected by the sensor 58, the control unit 46 sends the control command 462.

[0139] However, it is also possible that, for example, one or more motion sensors are provided, namely, for example, a motion sensor 59 at the energy storage module 40 and a motion sensor 59B at the machine tool 20. If the motion sensors 59, 59B signal uniform movements, the control devices 46, 26 can communicate this with each other and thereby recognize that the energy storage module 40 and the machine tool 20 are in the operating state, i.e., in the connected state.

[0140] Furthermore, it is possible, for example, for an optical sensor 68 or another proximity sensor to detect when the device interface 30 is attached to the device interface 50. The optical sensor or proximity sensor 68 is shown as an example in the energy storage module 40A according to Figure 5 shown, but could easily also be provided at the device interface 30 of the machine tool 20 (see Figure 4 ).

[0141] Similar to the proximity sensors or optical sensors 68 (ultrasound sensors, magnetic sensors, or the like may also be provided), an electrical switch 68, in particular a push-button switch or momentary switch, is also actuated when the plug-in form-lock contours 51 and 31 are engaged with each other, i.e., when the device interfaces 30, 50 are mechanically connected. The electrical switch 69 can thus also distinguish the operating state from the disconnected state of the device interfaces 30, 50 and cause the wireless communication interface 60C or the energy storage module 40 to send the login message 440.

[0142] It is also possible that the energy storage module 40 receives at least one status piece of information, in particular an error message and / or a switch position, of the electrical device and / or at least one identification piece of information, for example, a serial number, of the electrical device as part of the received information EM. For example, the energy storage module 40 can receive an error message as a status message 29C and an identification message 29D, for example, a unique identifier or serial number of the machine tool 20, from the machine tool 20. It is possible that the machine tool 20 sends this received information EM spontaneously via the data interface 54, i.e., without prior querying by the energy storage module 40 at the machine tool 20, or that the energy storage module 40 queries this received information EM from the machine tool 20.The fault information can, for example, represent overheating or electrical overload of the machine tool 20. The identification information 29D can also include a type identifier, so that, for example, the type of machine tool 20, in particular a screwdriving machine, sawing machine or the like, can be identified from the identification information 29D.

[0143] The aforementioned received information EM is, for example, not security-relevant or confidential. It is particularly advantageous if the energy storage module 40 transmits this received information EM cyclically or periodically as part of broadcast or advertising communication, and / or during the transition from the disconnected state to the operating state, i.e., when connected to the machine tool 20, especially unencrypted. Of course, encrypted communication is also possible if, for example, encryption parameters have already been exchanged between the energy storage module 40 and the configuration device 500 or another receiving device. In all the aforementioned scenarios, the configuration device 500 can, for example, receive the identification information 29D and / or the status information 29C from the energy storage module 40.

[0144] As explained, the vacuum cleaner 70 can have one or more communication modules 300. The arrangement with multiple configuration modules 300A, 300B, and 300C is optional; that is, for example, only one of these communication modules could be provided, or none at all. The vacuum cleaner 70 would still function.

[0145] The 300A communication modules can be used, via their 311 communication interfaces, to maintain or establish a control connection. For example, a control connection S6 can be established from the 20B hand-held machine tool or the 40B energy storage module to the 70 vacuum cleaner or the 100 external communication device, which is established and / or maintained at least partially by the 300B and 300C communication modules.

[0146] For example, the wireless communication interface 60C of the machine tool 20A or the wireless communication interface 60 of the energy storage module 40B can first communicate with the communication module 300 on a section S61, for example, to send the control command 460 and / or 462, i.e., to switch the vacuum unit 75 on and off. On a communication section or connection section S6.2, the communication module 300 communicates this information or control command to the communication module 300B, which in turn forwards the received control command or information on a connection section S63 to the external communication device 100 or the vacuum cleaner 70. Since the communication modules 300B and 300C are located only a short distance from the system components 20B / 40B on the one hand and the vacuum cleaner 70 on the other, respectively, the communication module 300B and 300C can be easily transmitted to the external communication device 100 or the vacuum cleaner 70.Since the communication device 100 is arranged, the connection sections S61 and S63 are short. Accordingly, the transmit power of the external communication device 100 and the wireless communication interface 60 / 60C can be particularly low.

[0147] In particular, on a short transmission path between the respective communication module 300B and the wireless communication interface 60, 60C, or between the communication module 300C and the external communication device 100, not only is the transmission power particularly low, but the security aspect is also particularly favorable. For example, the reception ranges of the communication modules 300B and 300C can be designed to be so short that interfering information from a third party or a disruptive control command is not even received and forwarded by the communication modules 300B and 330C.

[0148] Naturally, the communication modules 300B and 300C can also forward information sent by the vacuum cleaner 70 to the energy storage module 40B or the machine tool 20B; that is, they can operate unidirectionally, either from the vacuum cleaner to the machine tool or vice versa, or bidirectionally. The gateway function is conveniently bidirectional. For example, the vacuum cleaner 70 can communicate the fill level of the dirt collection chamber 73 via the control connection S6, which in this case is a signaling connection, so that the machine tool 20B can cease operation if dust removal is no longer possible.

[0149] The communication modules 300A and 300B can also easily implement a gateway function in connection with the machine tool 22A and the vacuum cleaner 70 in this way.

[0150] It is not absolutely necessary to provide two communication modules for the gateway function, one located closer to the vacuum cleaner and the other closer to the machine tool or its energy storage module. For example, a single communication module 300, such as the communication module 300A, can serve as a gateway between the external communication device 100 and the energy storage module 40A.

[0151] The communication modules 300 can also support the establishment of communication relationships, and in particular control connections. Furthermore, a communication module 300 can also be authorized for the controlling or communicating wireless connection with the external communication device 100 in the following manner.

[0152] For example, the external communication device 100 has a communication interface 109 according to a second standard that differs from the communication interface 110. For example, the first standard of the communication interface 110 is a Bluetooth, WLAN, or similar standard, while the second standard of the communication interface 109 is designed for near-field communication, for example, an RFID communication interface or an NFC communication interface.

[0153] Other components of system 10 also expediently have further communication interfaces of these second standards. For example, the communication module 300 has such a communication interface 318. The energy storage module 40 can also have such a communication interface of the second standard, namely a communication interface 67. Finally, the communication interface of the second standard can also be provided directly on or in the suction housing 71, in particular as a communication interface 84.

[0154] The communication interfaces of the second standard, for example, the near-field communication standard, serve to store and / or transmit communication parameters necessary for the control or signaling connections S1 and S2. Control connections S3 and S4 of the communication modules 300A and 300B, which control the vacuum cleaner 70 (e.g., switching the suction unit 75 on and off), can also be authorized or parameterized in this way. Finally, the gateway function, i.e., the control connection S6, can be configured using the communication interfaces of the second standard.

[0155] The following are some variations: For example, the communication parameters 85 stored in communication interface 84 and / or communication interface 109 include the address identifier 441 of the vacuum cleaner 70 and the encryption parameter 451, which are necessary to establish a control connection with the vacuum cleaner 70 or the external communication device 100. If one of the communication modules 300A, 300B, or 300C, with its communication interface 318, enters the transmission range of communication interface 109 and / or communication interface 84, it can read the communication parameters 85. The reverse is also possible, for example, that the communication parameters of communication module 300 are stored in this module and can be read by one or both of the communication interfaces 109 and 84.

[0156] In this way, the wireless communication interfaces 60 or 60C can also be configured. For example, the communication interface 37 of the machine tool 20 can read the communication parameters 85 when it is near the communication interface 84. Similarly, a respective energy storage module 40 can use its communication interface 67 to read the communication parameters 85 from or receive them from the communication interfaces 84 and / or 109.

[0157] To establish a control connection between the communication module 300 and / or the energy storage module 40B and the external communication device 100, a communication interface 909, for example in the form of an NFC or RFID transmitter, can also be implemented. The communication interface 909 is, for example, located at the longitudinal end 17 of the suction hose 15. For example, the communication interface 909 includes communication parameters for the first standard, which can be read by a corresponding reading communication interface 910 of the vacuum cleaner 70 or 870. The communication interface 909 can, for example, be an RFID tag, NFC tag, or the like. Further parameters 911 can also be stored in the communication interface 909, for example, the geometry of the suction hose 15, in particular its length and / or diameter, etc., whereby these additional parameters 911 can be read out via the communication interface 910.

[0158] It is also possible for one or more of the communication interfaces of the second standard to serve as transfer communication parameters. For example, the communication module 300B can read the communication parameters 85 directly from the suction housing 71, specifically from communication interfaces 84 and / or 109, and then transmit them to the machine tool 20B and / or the energy storage module 40B. In this case, the communication module 300B acts as an intermediate storage location for the communication parameters 85.

[0159] Another way to switch the external communication device 100 or the vacuum cleaner 70 into standby mode for establishing a control connection is, for example, implemented by an accelerometer or motion sensor 312. The accelerometer 312 sends acceleration signals to the control unit 336, which uses the motion signals or message signals from the accelerometer 312 to detect a typical connection or assembly movement of the suction hose 15 on the hand-held power tool 20A, 20B. For example, the control unit 336 uses the accelerometer 312 to detect a typical connection movement, which is a linear and / or rotational movement of a predetermined length, namely the insertion path when connecting the suction hose 15 to one of the suction outlets 39.

[0160] Furthermore, it is possible for a motion pattern to be detected using another motion sensor located on board the energy storage module or the machine tool. For example, the motion sensor 59 of the energy storage module 40 can detect a motion pattern and transmit it to the communication module 300 via the wireless communication interface 60. The communication module 300 compares the motion pattern of the motion sensor 59 with a motion pattern of the motion or acceleration sensor 312. If both motion patterns are identical, this indicates that the suction hose 15 is attached to the machine tool 20 or will be attached, for example, if the motion patterns are in the same direction but opposite. Based on this information, the communication module 300 can, for example, establish the control connection S1 or S2.The detection of the movement pattern of the accelerometer 312 and / or 59 can, for example, trigger the establishment of a respective control connection S1 or S2 and / or the pairing function, in particular the sending of the registration message 360.

[0161] For configuration and / or control, a device located outside the system (machine tool, energy storage module, suction hose, and vacuum cleaner) can also be used, for example, a configuration device 500. The configuration device 500 is, for example, a computer, in particular a smartphone, a smartwatch, a tablet computer, or the like. The configuration device 500 has a housing 501, which is mobile and independent of the suction hose 15 and vacuum cleaner 70. Furthermore, the housing 501 is not part of any of the machine tools 20 or the energy storage modules 40. However, it is conceivable that, for example, the vacuum cleaner 70 has a module receptacle 96 into which the configuration device 500, which is also suitable as a remote control, can be inserted. The configuration device 500 has a display device 502 and input means 503 for outputting information to the operator N and for inputting commands.The input devices 503 can be part of the display device 502, for example in the form of a touchpad.

[0162] The configuration device 500 comprises a control unit 506 with a processor 507 and a memory 508. One or more program modules 509 are stored in the memory 508, the program code of which is executable by the processor 507. Furthermore, a configuration module 510 is stored in the memory 508, which can be used to configure the control connections S1–S4. The configuration module 510 contains program code that is executable by the processor 507. The configuration device 500 can directly control the vacuum cleaner 70 in the manner of the communication modules 300. For this purpose, a communication interface 511 is provided, in particular a Bluetooth interface, WLAN interface, or the like, which can communicate directly with the external communication device 100. For example, input at the input devices 503 is possible in the manner of actuating one of the registration control elements 316 or 106.The configuration device 500 then executes, for example, program code of the configuration module 510 to switch the external communication device 100 into standby mode, in which the energy storage modules 40 or the tool machine 20 can be authorized to establish the control connection.

[0163] Furthermore, the configuration device 500 expediently features a configuration interface 512 with the second standard, for example, an RFID interface. Thus, the configuration device 500 can, for example, read and / or transmit the configuration parameters 85.

[0164] It should be added at this point that, of course, the machine tools 20 with their communication interfaces 37 of the wide standard and / or the energy storage modules 40 with their communication interfaces 67 can be brought directly into the vicinity of the suction housing 71 and / or the external communication device 100 in order to read out the communication parameters 85 and / or send their communication parameters there.

[0165] It should be added here that, of course, the machine tools 20 with their communication interfaces 37 of the broad standard and / or the energy storage modules 40 with their communication interfaces 67 can be brought directly into the vicinity of the vacuum cleaner housing 71 and / or the external communication device 100 in order to read the communication parameters 85 and / or send their communication parameters there. Thus, the machine tools 20 and the energy storage modules 40, as well as the vacuum cleaner 70, also form configuration modules, each with a communication interface of the first and the second communication standard.

[0166] Furthermore, the configuration device 500 is suitable, for example, for loading software or at least one program module, configuration data, or the like into one of the energy storage modules 40 and / or one of the machine tools 20. The wireless communication interfaces 60, 60C preferably communicate directly with the communication interface 511 of the configuration device 500. In this way, for example, a program module 49 can be transferred to an energy storage module 40 or a program module 29 to a machine tool 20. Furthermore, configuration data 29A, such as operating parameters and / or machine settings (maximum speeds, maximum power, service life limits, or the like), can be transferred to the machine tool 20 in this way.A program module 29 can be transmitted directly, for example via the communication interface 60 to the machine tool 20, or indirectly via an energy storage module 40, i.e. its wireless communication interface 60, and via the mutually communicating data interfaces 34, 54 from the energy storage module 40 to the machine tool 20, in particular its control unit 26.

[0167] Of course, a gateway function of a machine tool to the energy storage module is also possible, i.e., that, for example, the wireless communication interface 60C receives a program module 49 for an energy storage module 40 and transmits it to the energy storage module 40 via the data interfaces 34, 54.

[0168] Conversely, data from the machine tool 20 can be received from the energy storage module 40 and transmitted to the configuration device 500. This data could include, for example, protocol data 29B, particularly data from an error memory, a log file, or similar sources. The error memory could contain, for example, errors that occurred during the operation of the machine tool 20, such as temperature exceedances. The log file could contain, for example, data about the usage of the machine tool 20. Using the energy storage module 40, which acts as a gateway, data such as usage duration, error conditions, or similar information can be read from the machine tool 20 via the configuration device 500. The machine tool 20 does not require its own radio interface or any other wireless interface.

[0169] Control information can be sent via the control connections S1 - S6, for example, switching commands for the vacuum unit 75, dust class, speed setting, power consumption, contact pressure and particle or dust quantity of a respective machine tool 20. Furthermore, configuration of the vacuum cleaner 70 is possible, i.e., that configuration data or message data from the machine tool 20 and / or the energy storage modules 40 are transmitted to the vacuum cleaner 20 via one or more of the control connections S1 - S6, for example, run-on time after switching off the vacuum unit, power required by the vacuum unit, or the like.

[0170] The configuration device 500 could temporarily register with the external communication device 100 according to the functional and communication sequence 400. However, a permanent registration in the manner of the communication modules 300 is preferred. To authorize or register the configuration device 500 with the vacuum cleaner 70 or the external communication device 100, the registration control element 106 must be pressed and held for a long time, for example. This ensures that only an authorized and entitled device is registered.

[0171] The following is a prioritization and backup concept: Components of the system 10 permanently registered with the vacuum cleaner 70 for control are designated for priority control of the vacuum cleaner 70, e.g., the network-connected machine tool 20C, the communication modules 300, and the configuration device 500. If a switch-on or switch-off signal for the suction unit 75 is received from one of these components, this is processed by the vacuum cleaner 70, in particular its control unit 86, with priority over a corresponding control command from the machine tools 20A and 20C equipped with energy storage module 40.

[0172] Furthermore, operation of one of the control elements of the control element arrangement 77 takes precedence. Thus, if, for example, the switching element 78 is actuated, every other control connection is subordinate.

[0173] The remote controls, such as the communication modules 300 or the configuration device 500, have a one-to-one relationship with the vacuum cleaner 70. This prevents a remote control from mistakenly controlling a different vacuum cleaner. It is also always advantageous if only one machine tool with an energy storage module is authorized to control the vacuum cleaner 70 at any given time. As soon as another machine tool is authorized, the authorization of the previously authorized machine is revoked. Therefore, in this specific embodiment, only one of the control connections, S1 or S2, is possible at any given time.

[0174] Instead of or in addition to the current sensing of socket 79, a compressed air sensing system could also be provided. This would allow, for example, a compressed air-operated device, such as a grinding or polishing machine, to be connected to the vacuum cleaner 70. When this device is switched on or off, the vacuum unit 75 runs or switches off again. A corresponding compressed air sensor is provided at the connection device in this case. The connection device can be a flow-through device, meaning that compressed air is fed into the vacuum cleaner 70 on one side and simultaneously drawn off by the pneumatic machine (not shown in the drawing). Switching on a pneumatic machine or a mains-powered machine (machine tool 20C) and connecting it to the vacuum cleaner 70 has the highest priority. The communication modules 300 and the configuration device 500, as well as the switching element 78, have a medium priority.

[0175] The lowest priority is given to battery-powered machines or power tools equipped with energy storage modules 20A, 20C.

[0176] To revoke authorization or terminate a control connection S1-S6, it can be advantageously provided that this is triggered by the termination of the respective power supply. Thus, for example, if an energy storage module 40A, 40B is disconnected from the machine tool 20A, 20B, the control connections S1 or S2 are automatically terminated. Similarly, when the power supply 310 of the configuration module 300 is removed, the authorization for the vacuum cleaner 70 is automatically revoked. It is advantageous if, upon such a disconnection, the energy storage module 40 or the machine tool 20 also sends a switching command to turn off the vacuum unit 75.

[0177] A remote control, for example the communication module 300 or the configuration device 500, conveniently registers with a new identity with the external communication device 100 or the wireless interface 60 when the power supply is interrupted, for example, when the power supply 310 is removed. This allows, for example, a new encryption to be established. When a new identity is available, i.e., a new address identifier, both communication partners are ready to negotiate new encryption parameters. If competing wireless communication interfaces 60 and 60C attempt to establish a control connection with the vacuum cleaner 70 or the external communication device 100, the first wireless communication interface 60 to register is accepted.For example, if the switching element 24 of the machine tool 20A is pressed before the switching element 24 of the machine tool 20C during the standby mode of the external communication device 100, the control connection S1 is established with priority.

[0178] Furthermore, it is advantageous that, in the case of competing machines, the one that is closer to the receiving external communication device 100 can establish the control connection. In the exemplary embodiment according to Figure 1 For example, this could be the energy storage module 40A, which wants to establish the control connection S1. For example, the wireless communication interface 60 can write signal strength information 448 into the registration message 440, specifying the signal strength with which it sends the registration message 440.

[0179] Using a signal strength sensor 111, the external communication device 100 can measure the strength of the signal with which the registration message 440 is received and compare it with the signal strength information 448. From this, the control device 86 can then determine a value for the distance between components 40A and 100.

[0180] However, the wireless communication interface 60C or the energy storage module 40B are further away from the external communication device 100, and are therefore treated as secondary.

[0181] It is also possible that no signal strength information 448 is contained in the login message 440. In this situation, the sensor 111 can, for example, compare the signal strength of the login message 440 with a threshold value.

[0182] Furthermore, it is possible that the sensor 111, for example, directly compares the signal strengths of the registration messages 440 of the energy storage modules 40A and 40B and responds exclusively or earlier, i.e. with a shorter response time, to the registration message 440 that has a greater signal strength.

[0183] Prioritizing communication partners located closer to the external communication device 100 could, for example, involve the external communication device setting different response times. This is in Figure 16This is indicated. For example, a response time AS(t) is greater or less depending on a signal strength S measured by sensor 111. Thus, for example, the external communication device 100 can respond and send a reply message, such as the registration confirmation message 445, more quickly to the registration message 440 of the energy storage module 40A, which has a higher signal strength, than to a corresponding registration message 440 of the energy storage module 40B.

[0184] It is preferred that the communication parameters stored in memory 118 of the external communication device 100, for example the address identifiers 446 and 446C and the associated encryption parameters 451, 451C, are deleted after a predetermined time and / or after complete disconnection from a power supply. Similarly, in the case of the mobile device, namely, for example, the energy storage module 40A, 40B, it is advantageous that the communication parameters from memory 48 are deleted after a predetermined time and / or after disconnection from a power supply.

[0185] Furthermore, it is possible that an authorization of a mobile device, namely a machine tool 20 or an energy storage module 40, in which the external communication device is deleted, i.e., the control connections S1, S2 are considered deleted, if the respective machine tool 20, whose energy storage module 40 has switched on the vacuum cleaner 70, but another function, for example the switching element 78 or the network machine tool 20C, has switched the vacuum cleaner off again.

[0186] Furthermore, it is useful to reset the communication parameters of a mobile device that can establish a control connection in connection with a charging process; for example, when the energy storage module 40 is connected to the charger 220, parameters 441 and 451 are deleted.

[0187] By appropriately activating the registration control element 316 of the communication module 300, for example by pressing it for a sufficiently long time, a wireless communication connection can also be established between the communication module 300 and the configuration device 500, e.g. for a software update or the like.

[0188] One in the Figure 15 The system shown comprises a machine tool 20D, which is either a mains-powered machine tool or a machine tool that can be operated with an energy storage module 40D. The energy storage module 40D, as well as another energy storage module 840, which is suitable for operating a vacuum cleaner 870, are functionally equivalent to, for example, the energy storage module 40B. The design is also the same, as can be seen in the drawing.

[0189] The machine tool 20D, for example, is a grinding device for grinding a workpiece W. The machine tool 20D can be connected to the vacuum cleaner 870, namely to a suction inlet 872, by means of the suction hose 15 and the connecting piece 17.

[0190] The vacuum cleaner 870 is a stackable vacuum cleaner arranged in a stacking box. For example, it has a box-shaped vacuum cleaner housing 871, which can be stacked on, under, or inside a stack, which may also include containers for storing hand tools, machine tools (e.g., machine tool 20D), and the like. The connecting components for forming such stacks will not be discussed in detail. For example, a plurality of coupling elements 801, such as tabs, latches, or the like, for coupling with a stacked and / or understacked container, can be seen on the front of the vacuum cleaner housing 871.

[0191] Inside the vacuum cleaner housing 871, which can be closed by a lid, a suction unit 875 of the type of suction unit 75 is arranged. Furthermore, a filter 874 and a dirt collection chamber 873 are also located there, in particular in a container that can be removed from the vacuum cleaner housing 871. A device interface 830 is provided on the outside or inside of the vacuum cleaner housing 871, which is compatible with the device interface 50 of the energy storage module 840, so that the vacuum cleaner 870 can be operated with the energy storage module 840.

[0192] The energy storage module 840 can now communicate directly with the energy storage module 40D. This allows the machine tool 20D to control the energy storage module 840D via its energy storage module 40D, which in turn controls the vacuum cleaner 870 to switch the suction unit 875 on and / or off. Communication takes place via the previously described data interfaces 34 and 54 between the respective first and second system components, namely the machine tool 20D and the energy storage module 40D, and the vacuum cleaner 870 and the energy storage module 840. It should be noted here that registration using, for example, the registration message 440 is also possible with the system according to Figure 15This is possible. However, it is also possible that the 40D and 840 energy storage modules already constitute a communication pair authorized for mutual communication. Therefore, no operator intervention is necessary to establish the control connection between the vacuum cleaner and the machine tool.

[0193] It is possible that the machine tool 20 and / or the charger 220 periodically or cyclically switch on the supply voltage UB1 or supply voltage UB2, so that the energy storage module 40 recognizes that it is connected to the machine tool 20 or the charger 220, in particular to maintain a corresponding control connection with, for example, the vacuum cleaner 60 even when the machine tool 20 is switched off, or not to establish such a control connection when connected to the charger 220.

[0194] A preferred concept provides that, if an authorization already exists with a vacuum cleaner 60 or the external communication device 100, an energy storage module 40 and / or the configuration device 500 and / or at least one communication module 300 first re-establishes a connection with this vacuum cleaner, which is, so to speak, already stored. In this case, authorization is already present. In this case, the registration message 440 with the broadcast sender ID 44x is omitted, i.e., a registration message addressed to several vacuum cleaners that are, in principle, ready to receive, not just the vacuum cleaner 70. Advantageously, in this case, a registration message 440 conveniently contains an address identifier of the vacuum cleaner 70.

Claims

1. Vacuum cleaner (70, 870) for removal by suction of dust generated by a machine tool (20), wherein the vacuum cleaner (70, 870) may be driven by an electrical device, in the form of the machine tool (20) or an energy storage module (40) for supplying electrical power to the machine tool (20), which has a drive motor (22) for driving a tool holder (23) on which there is or may be mounted a tool provided for machining a workpiece (W), wherein the vacuum cleaner (70, 870) has a suction device housing (71, 871) with a dirt collecting chamber for holding dirt separated from a suction flow (S), together with a suction unit (75) for generating the suction flow (S), wherein there is on the suction device housing (71, 871) a suction inlet (72) for the connection of a suction hose (15) to create a flow connection for the suction flow (S) with the machine tool (20), wherein the vacuum cleaner (70, 870) has an external communication device (100) for a wireless control link (S1, S2) with a wireless communication interface (60, 60C) of the electrical device and to receive at least one control command, in particular for switch-on and / or switch-off of the vacuum cleaner (70, 870), in particular the suction unit (75), via the control link (S1, S2), and wherein the vacuum cleaner (70, 870) has at least one communications module (300), which is or may be located at a distance from the suction device housing (71, 871), to maintain and / or create the control link (S1, S2) of the electrical device with the vacuum cleaner (70, 870) characterised in that the communications module (300) is designed to control the vacuum cleaner independently of and / or autonomous from the electrical device, in particular to switch-on and / or switch-off the suction unit (75).

2. Vacuum cleaner (70, 870) according to claim 1, characterised in that the communications module (300) has a communications interface for wireless communication with the external communication device (100) and / or with the wireless communication interface (60, 60C) of the electrical device.

3. Vacuum cleaner (70, 870) according to claim 2, characterised in that the communications module (300) may be operated in the manner of a gateway between the external communication device (100) of the vacuum cleaner and the wireless communication interface (60, 60C) of the electrical device, wherein the communications module (300) passes on messages received from the vacuum cleaner to the electrical device and / or passes on messages received from the electrical device to the vacuum cleaner (70, 870).

4. Vacuum cleaner (70, 870) according to any of the preceding claims, characterised in that the external communication device (100) is ready in a standby mode to create the control link (S1, S2) with the electrical device and in a working mode is not ready to create the control link (S1, S2), and that the communications module (300) is designed for switching the external communication device (100), wherein it is advantageously provided that the communications module (300) has a login control unit operable by an operator, on actuation of which the communications module (300) sends a switching signal for switching the external communication device (100) into standby mode.

5. Vacuum cleaner according to any of the preceding claims, characterised in that the communications module (300) has at least one sensor (312), in particular a distance sensor and / or a movement sensor, to detect the electrical device, in particular the wireless communication interface (60, 60C) of the electrical device.

6. Vacuum cleaner according to claim 5, characterised in that the sensor or sensors (312) has or have or is or are formed by a sensor designed to detect a relative movement of the communications module (300) and of the electrical device.

7. Vacuum cleaner according to claim 6, characterised in that the sensor or sensors (312) is or are designed to detect a fitting movement on the fixing of a suction hose (15) to a suction outlet (39) of the electrical device, in particular to detect a plug-in movement, and / or that the sensor or sensors (312) is or are designed to detect a simultaneous movement, in particular in conjunction with a sensor or sensor transmitter located on the electrical device, of the electrical device and the communications module (300).

8. Vacuum cleaner according to any of the preceding claims, characterised in that the communications module (300) is or may be fitted to the suction hose (15) of the vacuum cleaner, in particular at a longitudinal end section (16, 17) of the suction hose (15) provided for connection to the suction device housing (71, 871) or the machine tool (20), wherein it is provided advantageously that it has a hose holder, in particular a clamp, for releasable fixing of the communications module (300) to the suction hose (15) or that the communications module (300) forms a permanent component of the suction hose (15), in particular being mounted on a connection piece for connection of the suction hose (15) to the electrical device or the suction connection of the vacuum cleaner (70, 870).

9. Vacuum cleaner according to any of the preceding claims, characterised in that there is provided on the suction device housing (71, 871) a module holder (90) for the communications module (300) and / or that the communications module (300) is or may be mounted on the electrical device, in particular the energy storage module (40).

10. Vacuum cleaner according to any of the preceding claims, characterised in that the communications module (300) is in the form of a program module with a program code which may be executed by a computer separate from the vacuum cleaner (70, 870), in particular a smartphone or smart watch, or that the communications module (300) is formed by a smartphone or smart watch.

11. Vacuum cleaner according to any of the preceding claims, characterised in that the communications module (300) is designed to create and / or maintain the control link (S1, S2) depending on the signal strength of a signal sent by the wireless communication interface (60, 60C) of the electrical device, in particular the login message or messages, wherein the communications module (300) expediently, in the case of electrical devices competing to create the control link (S1, S2), prefers the electrical device with the higher signal strength for creation of the control link (S1, S2).

12. Vacuum cleaner according to any of the preceding claims, characterised in that it has two communications modules (300), of which one is located in the vicinity of the suction device housing (71, 871) (70, 870), in particular on the suction hose (15), and the other communications module (300) is located on an end section of the suction hose (15) at a distance from the suction device housing (71, 871), wherein the communications modules (300) communicate with one another to maintain and / or create the control link (S1, S2).

13. System comprising a vacuum cleaner (70, 870) according to any of the preceding claims together with an electrical device of a wireless communication interface (60, 60C), wherein the electrical device expediently has a movement sensor (312) to generate a movement signal depending on a movement of the electrical device and the wireless communication interface (60, 60C) for sending the movement signal to the communications module (300).

14. Method for a vacuum cleaner (70, 870) for removal by suction of dust generated by a machine tool (20), wherein the vacuum cleaner (70, 870) may be driven by an electrical device, in the form of the machine tool (20) or an energy storage module (40) for supplying electrical power to the machine tool (20), which has a drive motor (22) for driving a tool holder (23) on which there is or may be mounted a tool provided for machining a workpiece (W), wherein the vacuum cleaner (70, 870) has a suction device housing (71, 871) with a dirt collecting chamber for holding dirt separated from a suction flow (S), together with a suction unit (75) for generating the suction flow (S), wherein there is on the suction device housing (71, 871) a suction inlet (72) for the connection of a suction hose (15) to create a flow connection for the suction flow (S) with the machine tool (20), wherein the vacuum cleaner (70, 870) has an external communication device (100) for a wireless control link (S1, S2) with a wireless communication interface (60, 60C) of the electrical device and to receive at least one control command, in particular for switch-on and / or switch-off of the vacuum cleaner (70, 870), in particular the suction unit (75), via the control link (S1, S2), and wherein the method provides for the maintenance and / or creation of the control link (S1, S2) of the electrical device with the vacuum cleaner (70, 870) by at least one communications module (300), in particular of the vacuum cleaner (70, 870), which is or may be located at a distance from the suction device housing (71, 871), characterized by control of the vacuum cleaner independent of and / or autonomous from the electrical device, in particular switching the suction unit (75) on and / or off, by means of the communication module (300).