Electrical device as a system component for controlling a vacuum cleaner

Abstract

The invention relates to an electrical appliance as a first or second system component (11, 12) for a system (10) which comprises, as a first system component (11), a machine tool (20) or a vacuum cleaner (70, 870) and, as a second system component, an electrical energy storage module (40) for providing electrical energy for the first system component (11), wherein the system components (11, 12) have matching appliance interfaces for being detachably fastened to one another and for transmitting electrical energy from the energy storage module (40) to the machine tool (20) or the vacuum cleaner (70, 870), wherein the electrical appliance has a communication interface for a wireless control connection (S1, S2) to or from a vacuum cleaner (70, 870) for actuating the vacuum cleaner (70, 870) which is provided for vacuuming away dust which is produced by the machine tool (20) and forms either one of the two system components or is a vacuum cleaner (70, 870) which is separate from the system components (11, 12), and wherein the appliance interfaces are electrically and / or mechanically disconnected from one another in a disconnection state and are electrically and / or mechanically connected to one another in an operating state. The electrical appliance is designed to transmit or receive at least one notification message (440) for establishing the control connection (S1, S2) in the event of a changeover from the disconnection state to the operating state and / or for terminating the control connection (S1, S2) and / or for transmitting a switch-off signal for a suction assembly (75) of the vacuum cleaner (70, 870) in the event of a changeover from the operating state to the disconnection state.

Description

[0001] The invention relates to an electrical device as a first or second system component for a system, according to the preamble of claim 1.

[0002] A vacuum cleaner and an energy storage module of this type are disclosed, for example, in DE 10 2012 003 073 A1 and EP 2 628 431 A1. The known electrical device is, for example, a battery pack or a power tool that can be connected or disconnected via a plug-in connection. The battery pack or energy storage module makes it possible to control a vacuum cleaner located remotely from the electrical device, for example, turning it on or off.

[0003] However, no simple methods are described for inexpensively establishing or disconnecting the control connection.

[0004] It is therefore the object of the present invention to provide a simple operating concept for an electrical device of the type mentioned at the beginning.

[0005] To achieve the object, an electrical device according to claim 1 and a method according to claim 13 are provided.

[0006] The electrical device is an energy storage module or a machine tool. The machine tool or vacuum cleaner can be supplied with electrical energy by the energy storage module. By simply connecting or disconnecting the energy storage module to the machine tool, the functions intended to establish or terminate the control connection are triggered or executed. It is possible, but not absolutely necessary, for an operator to perform an additional operating action, for example by pressing a button suitable for authorizing or registering the control connection or triggering such authorization or registration, or the like. Simply connecting or removing the energy storage module (the second system component) from the machine tool or the vacuum cleaner (the first system component) triggers the corresponding processes.

[0007] If the electrical device is the controlling component, so to speak, namely the machine tool or the device supplying the machine tool with power, namely the energy storage module, the transition from the disconnected state to the operating state immediately results, for example, in the electrical device sending a registration message to the vacuum cleaner to establish the control connection. Separating the system components from one another can also be advantageous in this context, for example if the energy storage module is disconnected from the machine tool. In this case, the energy storage module or the machine tool sends a disconnection message to disconnect the control connection to the receiving component, in this case the vacuum cleaner. It is also advantageous in this context if, for example, the vacuum cleaner's suction unit switches off. This avoids unnecessary operation or continued operation of the vacuum cleaner.

[0008] The first system component, namely the machine tool, advantageously has a suction connection for connecting a suction hose.

[0009] If the first system component is a machine tool, it is designed to control a vacuum cleaner, which in itself does not form part of the system.

[0010] At this point, however, it should be noted that a system according to the invention advantageously comprises an electrical device and the respective other system component, so that, for example, a combination of a machine tool and an energy storage module is formed. Such a system can be expanded to include the vacuum cleaner controlled via the control connection.

[0011] The electrical device is advantageously provided with at least one sensor for detecting the operating state and / or the separation state of the device interface.

[0012] The at least one sensor can be various types of sensors. For example, a distance sensor can be provided to detect the distance between the system components. Thus, if the device interfaces are arranged at a predetermined distance from one another, the distance sensor, for example an ultrasonic sensor, a tactile sensor, or the like, can detect this distance. A plug-in movement when connecting the device interfaces or the system components can also be sensed or detected by such a distance sensor. Thus, once the plug-in movement is complete, the distance is different from that for a plug-in movement that has not yet been completed.

[0013] Furthermore, the sensor can comprise a motion sensor for detecting a relative movement of the system components to one another. If, for example, the system components are no longer movable relative to one another or only have a predetermined amount of movement, this is detected by the sensor. In this way, however, a plug-in movement of the device interfaces to one another can also be detected. If, for example, the device interfaces are moved towards one another, in particular as part of a plug-in movement, the motion sensor can detect such a relative movement. At this point, it should be mentioned that the first and the second system component advantageously have such a motion sensor. If the motion sensors detect the same movement pattern, they can, for example, detect the movement of the device interfaces towards one another and thus a fastening of the first and the second system component to one another.The relative movement detected by the motion sensor can be, for example, a rotational movement and / or a linear movement. The motion sensor can be, for example, an acceleration sensor.

[0014] However, the at least one sensor can also comprise or be formed by an optical sensor for detecting the other system component. For example, if the device interfaces mutually shade or cover each other, the optical sensor can detect the operating state.

[0015] Furthermore, it is advantageous if the at least one sensor comprises an electrical switch, for example a push-button switch, a momentary-contact switch, or the like, that can be actuated by attaching the system components to one another. This allows for a simple actuation concept, i.e., for one system component to actuate the switch located on the other system component. This can occur, for example, during a plug-in movement.

[0016] At this point, it should be mentioned that a redundant sensor concept is obviously advantageous. If multiple sensors report the same connection status of the device interfaces to each other or of the system components to each other, for example, the operating status or the disconnection status, clear and practically reliable information can be determined from at least two redundant sensor signals.

[0017] The device interfaces can be conveniently secured to one another using a fixing device. The fixing device can comprise several components, for example, a locking device, a clamping device, a locking device, or the like.

[0018] Advantageously, a mechanical actuating element, for example a push button, a slide switch, or a sliding actuating element or the like, is provided to actuate the fixing device. The fixing device, for example a locking device, can be actuated by the actuating element between a fixing position and a release position. Preferably, the actuating element can be actuated in the direction of the fixing position of the fixing device or the position of the fixing device in which the system components are fixed to one another.

[0019] At least one sensor for detecting an actuation state of the actuation element is expediently arranged on such a mechanical actuation element, for example a release button or the like. Actuation of the actuation element in the direction of releasing the securing device is evaluated or detected by the electrical device as a transition from the operating state to the disconnection state. Thus, the sensor is provided for detecting the operating state or the disconnection state of the device interfaces. When the operator releases the securing device, i.e., moves it from the locking position to the release position, this is detected by the sensor and simultaneously evaluated as a signal for a transition from the operating state to the disconnection state. Then, for example, a logoff message is sent to terminate the control connection and / or a shutdown signal is sent for a suction unit of the vacuum cleaner.The sensor can be, for example, an electrical switch, an optical sensor, a pressure sensor, or the like. Any sensor concept suitable for determining the actuation state of the actuating element can be used as such a sensor.

[0020] Preferably, the device interfaces can be secured to one another using form-fitting contours, such as plug-in projections and plug-in receptacles, recesses and projections, or the like. For example, a plug-in receptacle on one system component can be provided for a plug-in projection on the other system component.

[0021] In the electrical device, it is advantageously provided that one device interface has plug-in form-locking contours for plugging into mating plug-in form-locking contours of the other device interface along a plug-in axis, as well as electrical contacts for contacting electrical mating contacts of the other device interface to electrically connect the system components, which come into electrical contact with one another during plug-in assembly of the plug-in form-locking contours and the mating plug-in form-locking contours. Thus, the electrical contacts, for example, power supply contacts and / or data contacts, come into direct contact with one another during plug-in assembly. The contacts can be, for example, spring contacts, contact tongues, contact surfaces, or the like.The plug-in form-locking contours and the mating plug-in form-locking contours include, for example, guide ribs, plug-in receptacles and plug-in projections, guide grooves, and / or the like. Combinations are readily possible.

[0022] It is preferred if the device interface comprises a data interface, in particular a bus interface. The data interface is, for example, a bus interface, in particular an I 2< C interface. The energy storage module can exchange data with the machine tool or the vacuum cleaner via the data interface. For example, a number of storage cells, a maximum available electrical power, an electrical capacity or a charge state or the like can be queried via the data interface. Switching signals, in particular for switching off the energy storage device or the machine tool or the vacuum cleaner can also be conveniently transmitted via the data interface. However, the data interface can also comprise a parallel data interface, i.e. a plurality of data contacts are provided, each dedicated to a specific piece of information.

[0023] According to the invention, the electrical device is designed to detect the operating state and / or the disconnection state, i.e., the connection state of the device interfaces to one another, based on data traffic via the data interface. For example, if the energy storage module of the machine tool or vacuum cleaner is asked, at the start of operation, which electrical characteristics are present so that the subsequent operation of the vacuum cleaner or machine tool can be optimized, this is a signal for establishing the operating state. This can be used, for example, by the energy storage module serving as a component of the machine tool to establish the control connection.However, if data traffic is interrupted, for example, due to a disconnection between the energy storage module and the vacuum cleaner or power tool, this can also be interpreted as an indication of an incipient or already initiated disconnection state. In this case, the device according to the invention, for example, terminates the control connection and / or sends a shutdown signal for the vacuum cleaner's suction unit or the like.

[0024] The data traffic may also be data traffic specifically intended to monitor the separation status.

[0025] Preferably, at least one verification message, in particular a verification message suitable exclusively for verification, is provided to detect the operating state or the disconnection state, or both. The verification message can be a unidirectionally sent message, for example a verification message sent by the vacuum cleaner or the machine tool, based on which the energy storage module can detect whether it is connected to the vacuum cleaner or the machine tool. A dedicated communication means, for example a special controller, can be provided for sending the verification message. It is also possible, for example, for one device, in particular the energy storage module, to send a verification message and, based on a response to the verification message, to detect that it is connected to a different device, for example a vacuum cleaner or a machine tool.Thus, the separation state or operating state can be verified by sending and receiving both a verification message and a response to the verification message. The at least one verification message is preferably sent cyclically and / or at predetermined intervals.

[0026] It is preferred if the electrical device is configured to perform authentication when establishing the control connection. Authentication includes, for example, sending an identification parameter, an access password, or the like.

[0027] Furthermore, it is advantageous if the communication interface is configured for encrypted communication via the control connection. The encryption can be, for example, Diffi-Hellman encryption.

[0028] The communication interface can be, for example, a Bluetooth interface, a Wi-Fi interface, or the like. Communication within a confined space, for example, within a range of up to approximately 10 or 20 meters, i.e., the typical length of a suction hose or suction connection, is particularly advantageous.

[0029] Preferably, the energy storage module comprises a module housing and an energy storage device accommodated in the module housing, in particular an arrangement with at least one rechargeable electrical storage cell, for providing electrical energy for powering the power tool or the vacuum cleaner. The electrical storage cells, in particular an aggregation or an arrangement of several electrical storage cells, can be charged, for example, by a charger. However, it is also possible for the energy storage device to comprise, for example, a fuel cell or similar other electrical storage device or chemical storage device that can ultimately provide electrical energy.

[0030] The energy storage module expediently comprises 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 transmitting electrical energy and / or data contacts, in particular bus contacts, for transmitting data.

[0031] The machine tool is a dust and / or particle-generating machine, for example a saw, a drill, a milling machine, a grinder, or the like. In particular, the machine tool is a handheld machine. The machine tool expediently has a suction outlet, for example, a connecting piece, for connecting a suction hose.

[0032] The vacuum cleaner could also be referred to more generally as a suction device. The vacuum cleaner can, of course, suck up not only dust, but also larger particles generated by the machine tool.

[0033] It is preferred if the control connection can only be established or is established when the vacuum cleaner and the machine tool are fluidly connected to one another by means of the suction hose or a suction hose.

[0034] Sensors or detection devices can be installed on the machine tool and / or vacuum cleaner to detect the connection of the suction hose. The control connection is only established when a suction hose is actually connected.

[0035] It is advantageous for the energy storage module to receive one or more pieces of reception information from the other system component, the vacuum cleaner or the machine tool, via a data interface of the device interface, for example, a bus interface, during the transition from the disconnected state to the operating state. For example, the energy storage module can query the machine tool or vacuum cleaner for the reception information, or the machine tool or vacuum cleaner can send the reception information to the energy storage module without prior query.Preferably, the received information comprises at least one item of status information, for example error information, a switching position of a switch, for example a potentiometer, an on / off switch or the like, of the vacuum cleaner or the machine tool and / or at least one item of identification information, for example a serial number, of the vacuum cleaner or the machine tool.

[0036] One or more predetermined pieces of reception information received by the vacuum cleaner or the power tool via the data interface, in particular non-security-relevant and / or non-confidential reception information, can be readily sent, in particular unencrypted, by the energy storage module via its wireless communication interface as part of a broadcast communication, advertising communication, or the like. For example, a smartphone or other external communication device can receive status information, at least one piece of identification information, or the like from the vacuum cleaner or the power tool via the energy storage module.

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

[0038] Identical and similar components are partially provided with the same or similar reference symbols identified by the addition of A, B, etc.

[0039] One in Figure 1System 10, partially illustrated schematically, comprises machine tools 20A, 20B, which are supplied with electrical energy by energy storage modules 40A, 40B. Machine tools 20A, 20B are dust- or particle-generating machine tools, and in particular hand-held power tools. Machine tool 20B is, for example, a grinder, and machine tool 20A is a saw, in particular a jigsaw. A router or similar other dust- or particle-generating electric machine tool or hand-held power 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. It is provided for driving a tool holder 23A, 23B and thus a tool 38A, 38B arranged on the tool holder 23A, 23B. The tool 38A is, for example, a sawing tool, and the tool 38B is a sanding pad. The drive motor 22 can drive the tool 23A, 38B directly or via a gear, e.g., a gear 22A for an oscillating motion.

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

[0042] The handheld power tool 20A, 20B has a control device 26 for controlling the drive motor 22. The control device 26 comprises, for example, a processor 27 and a memory 28. One or more program modules 29 are stored in the memory 27, the program code of which can be executed by the processor 27 to control the handheld power tool 20A, 20B and / or to communicate with the energy storage modules 40A, 40B.

[0043] The machine tool 20A, 20B has an extraction port or suction 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 connecting piece, communicates with extraction openings arranged on or in the tool 38B, which are not visible in the drawing. Thus, dust can be directly extracted from the tool 38A, 38B in a 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 off, for example, on rollers 71A, 71B. The vacuum cleaner 70 is a mobile vacuum cleaner. However, the vacuum cleaner 70 could also be in the form of a stackable vacuum cleaner, thus having a stackable housing, and / or have a box-shaped configuration. The rollers 71A, 71B are optional.

[0045] The vacuum cleaner 70 has a suction inlet 72 on the front side 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 connected to the suction outlet 39A and another longitudinal end 17 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 branches to the longitudinal end 16 and to a longitudinal end 19, which is connected to the suction outlet 39A of the machine tool 20B. Of course, the branch 18 of the suction hose 15 is optional. In a manner known per se, a suction hose can also be provided which extends directly between a suction outlet 39 and the suction inlet 72 without having a branch.

[0046] A dirt collection chamber 73 is provided in the vacuum cleaner housing 71, into which dust and other particles separated from a suction stream S, which is sucked in via 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 in addition to or instead of the filter 74. The suction stream S, which is sucked in through the suction inlet 72, can be generated by a suction unit 75. The suction unit 75 is supplied with electrical power, for example, via a mains connection device 76. The mains connection device 76 comprises, for example, a connecting cable and a connecting plug for connection to an electrical supply network EV, in particular with 220 V or 110 V alternating current.

[0047] The functions of the vacuum cleaner 70 can be controlled by a control element arrangement 77. The control element arrangement comprises, for example, a switching element 78, with which the vacuum cleaner can be switched on or off or switched to automatic operation, in which, for example, a current flow via a socket 79 leads to the switching on and off of the suction unit 75. The socket 79 is expediently provided on the control element arrangement 77. An electrical load, 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 arranged on a connecting cable, which is a component of a mains connection device 30C. When an operator actuates a switching element 24 of the hand-held power tool 20C to energize its drive motor 22, with which, for example, a saw blade can be driven, current flows through the mains connection device 30C, which current is provided 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 a current flows via the socket 79 and switches off the suction unit 25 when the operation of the hand-held power tool 20C ends, i.e. when the current sensor 81 no longer detects a current flow, expediently with a follow-up time.

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

[0050] The control device 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 comprises a 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 using the network connection device 30C.

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

[0053] The energy storage modules 40A, 40B are functionally similar, although mechanical differences and / or electrical differences with regard to power supply capacity, voltage, or the like may readily 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 a plurality of storage cells 43, which are rechargeable.

[0055] Using a display device 44, which is optionally present in the energy storage module 40A, a charge level of the energy storage device 42 can be output, for example acoustically and / or visually. The display device 44 comprises, for example, a loudspeaker 44A, which can signal a low charge level, e.g., using a warning tone. The display device 44 preferably 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 have a supply module 46X for adapting a voltage provided by the energy storage device 42 or a supply current provided by the energy storage device 42. Thus, a respective control device 46 can be supplied locally with electrical energy, regardless of whether the energy storage module 40 is connected to an electrical device, for example, a charger, a power tool, or a vacuum cleaner.

[0058] The control devices 46 comprise, for example, a processor 47 and a memory 48 in which at least one program module 49 is stored. For example, the control device 46 can communicate with the control device 26 of the handheld power tool 20A, 20B. The processor 47 can execute program code of the program modules 49, among other things, to implement the functions explained in more detail below.

[0059] The energy storage modules 40A, 40B can be detachably connected to the machine tools 20A, 20B using 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 form second system components 12, which can be firmly connected to one another 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-fitting contours suitable for a rotary lock or, as in the present case, plug-in form-fitting contours 51 on the device interface 50, which can be brought into form-fitting engagement with plug-in counter-form-fitting contours 31 on the device interfaces 30, namely within the scope of a plug-in movement.

[0062] By means of this plug-in movement, device supply contacts 32 of the device interface 30 come into contact with supply contacts 52 of the device interface 50, so that electrical energy can be provided 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 further comprise data contacts 33, 53 of data interfaces 34, 54, so that data communication, in this case in particular bus communication between the system components 11, 12 is also possible.

[0064] A fixing device 55, with which the system components 11, 12 can be fixed to one another, provides additional support for the form-locking concept based on the plug-in form-locking contours 51, 31. The fixing device 55 comprises, for example, a fixing element 56, in particular a catch, a locking element or the like, which can be brought into engagement 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 the present case, the fixing device 55 forms a locking device and / or latching device. The fixing element 56 can be disengaged from, or optionally also engaged with, the fixing contour 35 using an actuating element 57.For example, the fixing element 56 is a fixing projection / locking projection that can be brought into engagement with the fixing contour 35 configured as a fixing receptacle or recess. When the fixing device 55 assumes its fixing position or locking position, the plug-in form-locking contours 51 remain in engagement with the plug-in counter-form-locking contours 31, i.e., a 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 fixing element 56 are spring-loaded into the fixing position or locking position by a spring arrangement (not visible). Thus, the fixing device 55 can be moved from the fixing position to the release position by simply pressing or touching the actuating element 57. On the energy storage module 40A, a fixing element 56 is preferably provided on opposite sides, as well as an actuating element 57, while for the energy storage module 40B, only a single pushbutton or a single actuating element 57 is necessary.

[0066] The energy storage modules 40A, 40B can be charged using a charger 220. The charger 220 has a charger housing 221 on which a device interface 230 is provided. The device interface 230 has plug-in mating positive-locking contours 231 that are positively compatible with the plug-in positive-locking contours 51 of the energy storage modules 40A, 40B. Locking is not necessary for stationary operation. Matching the device interface 50, the charger 220 also has device supply contacts 232 and data contacts 233 of a data interface 234, preferably a bus interface. A voltage converter 235 is preferably arranged in the charging device 220, which can be supplied with electrical current via a mains connection device 236 and provides a direct voltage to the device supply contacts 232 for charging the energy storage device 42.The connector plug 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 plug 237 can be connected to the supply network EV.

[0067] The data interfaces 34, 54, and 234 are bus interfaces in the present case. For example, the bus interfaces or data interfaces 34, 54, and 234 are I 2< C bus interfaces. The bus interfaces comprise a clock line CL, a data line D, and a 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 supply line VD serves to ensure that the device interface 30 or 230 of the device interface 50 provides an electrical supply voltage, for example, a bus voltage UB. A bus clock of the bus BU implemented at the data interfaces 34, 54, and 234 is provided via the clock line CL.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, 12 are connected to one another, the energy storage module 40 provides a supply voltage UV at the supply contacts 52A, 52B, which is suitable for operating the drive motor 22. The supply voltage UV is, for example, a direct voltage of 15 volts or 18 volts, but can also be a different voltage at any time. At this point, it should be mentioned that a power supply module could, of course, also provide an alternating voltage. This is not important. The control device 26 of the machine tool 20A, 20B, hereinafter referred to simply as the machine tool 20, controls the drive motor 22 depending on an actuation of the switching element 24, for example, opening or closing a switch 24A. Instead of the switch 24A, power electronics, for example a power supply device for an electronically commutated drive motor 22, can also be provided.Furthermore, it is conceivable that the switching element 24 is connected directly into 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 a line L1 to the drive motor 22 and from there back via a line L2 to the energy storage device 42.

[0069] During a charging process, this current flow concept is reversed, which can be seen from Figure 12becomes clear. In this case, a charging current IL flows from the voltage converter 235 via the line L1 to the energy storage device 42. The supply contact 232B, like the supply contact 52, is assigned to a line L2, for example a ground line. The charging process is preferably controlled by a control device 226 of the charging device 220. The control device 226 can, for example, control the switch 238 to start or end the charging process. To monitor the charging process, the charging device 220 also communicates with the energy storage module 40, namely via the data interface 234 and the data contacts 233A, 233B and 233C assigned to it for the supply line VD, the clock line CL and the data line D. Through appropriate communication on the bus BU between the charging device 220 and the energy storage module 40, for example, the charge state of the energy storage device 42, its nominal voltage or the like can be queried.To control and monitor 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 device 226 of the charger 220, in which the program module 229 is stored.

[0070] The vacuum cleaner 70 can be controlled wirelessly or without cables. For this purpose, the vacuum cleaner 70 has an external communication device 100, which is integral or preferably configured 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 arrangement 77, in particular a front wall 95 on which the control element arrangement 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 one another. This allows data, information, electrical supply voltage, and the like to be transmitted.For example, the control device 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 device 86 and a data interface 108 of the external communication device 100 are in contact with each other via the contact arrangements 101 and 91. The data interfaces 83, 108 comprise, for example, a bus interface via which the external communication device 100 and the control device 86 can communicate data and information.

[0072] The data interfaces 108, 83 implement, for example, a bus connection, in particular an I 2 < C bus connection. Other bus communications are also possible. Furthermore, the data interfaces 83, 108 can also include individual data contacts, for example, for parallel data transmission.

[0073] The module receptacle 90 comprises side walls 92 that extend from a base 93 of the module receptacle 90 to the front wall 50. In the module receptacle 90, i.e., in the interior space between the side walls 92 and the base 93, the contact arrangement 101 protruding from a rear side 103 of a front wall 105 of the external communication device 100 can engage or come into contact with the contact arrangement 91 arranged on the base 93 of the module receptacle 90. Then, the side wall surfaces 101 of the front wall 105 are aligned with the side walls 92, so that a front side or the front wall 105 of the external communication device 100, as in Figure 1shown, is aligned 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 the present case, a screw connection is provided. For example, one or two screw receptacles 94 are provided on the module receptacle 90, which are aligned with screw receptacles 104 of the external communication device 100 when the latter is accommodated in the module receptacle 90. In the screw receptacles 104, 94 Figure 1 The indicated screws are screwed in.

[0074] The vacuum cleaner 70 can be controlled wirelessly and / or wirelessly using the external communication device 100, for example through a wireless communication interface 60 of the energy storage module 40A or 40B.

[0075] At this point, it should be noted that the wireless communication interface 60 is to be understood as an example for wireless control of the systems comprising the 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 in order to directly perform one or more of the communication functions described below, i.e., to communicate wirelessly with the vacuum cleaner 70 without a respective energy storage module 40, which has a wireless communication interface.

[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 re-established or restored, to a standby mode using a login control element 160.

[0077] The standby mode or the working mode are signaled visually and / or acoustically by the external communication device 100. For example, a display device 114 is provided, which can signal various operating modes of the external communication device 100. The display device 114 comprises, for example, an illuminated display, in particular a ring-shaped illuminated display. 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 button 107, around which the display device 114 preferably extends in a ring.

[0078] If the indicator 114 is continuously illuminated, it signals an established control connection, i.e., the status "connected." If the external communication device 100 is switched from the working mode to the standby mode using the registration control element 106, the indicator 114 illuminates, for example, in a different color or with a different movement pattern, in particular with a slowly circling movement pattern. This movement pattern or the color of the indicator 114 can depend on the type of control connection. If a control connection is currently being established and / or has already been established, as explained below, the indicator 114 can, for example, have a slowly circling light representation. However, if a control connection is permanently established or is to be established, i.e.If 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 arranged or capable of being arranged outside the vacuum cleaner housing 71. The communication module 100 serves to maintain and / or establish a control connection of the electrical device in the form of one of the system components 11 and / or 12 to the vacuum cleaner 70, in particular the external communication device 100.

[0081] The communication module 300 has a module housing 301, which can be placed on the suction hose 15. The module housing 301 expediently has a switching element 334 on its upper side 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 side 302, making it easy to operate and actuate. 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 lies on 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. Extending between the bottom wall 306 and the top or upper side wall 302 are a front wall 303, a rear wall 304, and longitudinal side walls 305. These define an interior space in which a control device 336 of the communication module 300 is arranged in a protected manner.

[0083] The control device 336 has, for example, a processor 337, a memory 338 and at least one program module 339, which comprises program code that can be executed by the processor 337 to carry out 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 the 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 its longitudinal end regions 322, which can be brought into engagement with the hooks 307. Of course, other fastening technologies are also possible, for example, using a Velcro fastener or the like. It may also be 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. connecting pieces or connecting nozzles made of rubber, plastic or the like.However, the communication module 300 can also be glued, welded, or otherwise connected to the suction hose 15. However, this does not play a significant role in the communication functions of the communication module 300. However, the ergonomically favorable arrangement on the suction hose 15 is advantageous.

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

[0086] Accordingly, a display device 314 is configured identically or similarly to the display device 114. The display device 314 comprises, for example, an illuminated display that signals information related to the establishment and / or presence of a control connection between the communication module 300 and the external communication device 100.

[0087] For example, if an operator actuates the registration control element 316, in particular presses 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 for switching to standby mode, to the communication interface 110. This switches the external communication device 110 to a standby mode, which is signaled by the display device 314. Actuation of the registration control element 316 therefore results in the external communication device 100 switching from working mode to standby mode. To send the control signal, an encrypted and / or authenticated connection is preferably provided between the communication module 300 and the external communication interface 110.

[0088] Upon actuation of the switching element 334, 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 device 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, with which, for example, the speed of the suction unit 75 and / or its power can be adjusted. Thus, 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 forms a system component of the vacuum cleaner 70, a control connection from the communication module 300 to the external communication device 100 is, so to speak, a permanent control connection. Establishing such a control connection requires a greater degree of difficulty 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 time to authorize or register the communication module 300 with the vacuum cleaner 70 or the external communication device 100. A registration procedure for establishing 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, on the other hand, is easier to establish, for example, by actuating the registration control element 106 and / or 316 for a shorter time.

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

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

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

[0093] To make these functions particularly easy to implement, the energy storage modules 20A, 20B have intelligence such that they can, for example, detect whether they are connected to a device that requires or even implements wireless communication with the vacuum cleaner 70, or to another device, such as a machine tool that is not suitable for vacuum cleaner operation, such as a screwing device, a gluing machine, or the like. In particular, the energy storage modules 40A, 40B can detect whether they are connected to the charger 220.

[0094] The charger 220 sends, for example, via the bus interface BU, a query message 700 to the control device 46, with which it queries the current charge state of the energy storage device 42, the state and / or maximum charging voltage for the storage cells 43, maximum charging currents, or the like. The control device 46 responds with a response message 701 in which the corresponding information is stored. Based on the quality of the query message 700, namely, for example, the fact that a maximum permissible charging current is being queried, the energy storage module 40 can recognize that it is connected to a charger and not to an electrical load 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 such as charger 220. For example, a charging voltage UL provided by charger 220 is higher than a supply voltage UV that is present when connecting an electrical load between lines L1 and L2 or supply contacts 52A, 52B.

[0096] The control device 46 is supplied with electrical energy via the bus interface or data interface 54. The supply voltage UB2 applied to the supply line VD or the data contact 53A, which is provided by the charger 220, differs in its voltage level from the supply voltage UB1 provided by the electric hand-held power tool 220 at the data contact 53A. The supply voltage UB1 is, for example, 3 volts, and the supply voltage UB2 is 5 volts.

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

[0098] It is possible for the control device 46 to change an 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 device 46 activates the wireless communication interface 60 when the energy storage module 40 is connected to a machine tool 20, while deactivates the wireless communication interface 60 when the energy storage module 40 is connected to the charger 220.

[0099] It is also possible for the control device 46 not to deactivate the wireless communication interface 60 when the energy storage module 40 is connected to the charger 220, but to change the communication mode. For example, the wireless communication interface 60 can remain active for communication with the configuration device 500, which will be explained later, in particular a smartphone, when the energy storage module 40 is not connected to the machine tool 20, for example, is connected to the charger 220 or does not have such a connection. Using the configuration device 500, for example, the smartphone, program data or the like can be transmitted to the energy storage module 40, even if it is not connected to the machine tool 20.

[0100] However, when 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 easily and simply.

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

[0102] A control device 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, for a predetermined time, in particular one or two minutes, after which it ends again. 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 subsequent functionalities, the control device 116 has, for example, 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] A function 412 of the program module 119 enables, for example, the acquisition of information from the registration control element 106. Thus, if the operator, for example, actuates, in particular presses, the registration control element 106 in a step 413, the function 412 reports this back to the operator N using an output command 414, namely by controlling the display device 114 so that the operator sees that the external communication device 100, and thus the vacuum cleaner 70, is ready to establish new control connections. The external communication device 100 enters a state 415, namely a standby mode, in which a control connection can be established with the external configuration device 100.

[0105] At the beginning of the functional and communication sequence 400, the communication module 40 is in a "sleep" state 430, i.e., inactive. Based on this, several scenarios for establishing one of the control connections S1 or S2 are possible, a first of which is described below:

[0106] For example, operator N actuates the switching element 24 of machine tool 20A to turn it on. However, machine tool 20A or the associated energy storage module 40A is not yet authorized to issue switching commands or control commands to turn on suction unit 75. However, such registration or authorization occurs automatically, so to speak, if operator N merely actuates the switching element 24.

[0107] When operator N actuates switching element 24, the communication relationship between machine tool 20A and 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 operating information triggered by the actuation of switching element 24 that a device suitable for establishing and using a control connection is connected to device interface 50.

[0108] The energy storage module 40 can therefore, 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.

[0109] Further operating information can also be, for example, the supply voltage UB1, which is provided by the control device 26 on the supply line VD or the data contact 53a. The supply voltage UB1 differs from the supply voltage UB2 of the charger 220, and in particular is lower than it. Thus, the supply voltage UB1 also constitutes an indicator for the actuation of the switching element 24.

[0110] Furthermore, an initialization communication on the bus BU can be evaluated by the control device 46 as an indicator for 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 only as machine tool 20). For example, a request message 750 can be sent from the control device 26 to the control device 46, with which, for example, a supply voltage UV of the energy storage module 40 is requested. However, 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, 20B as a machine tool requiring dust extraction. The request message 750 represents, for example, operational readiness information of the machine tool 20.With a response message 752, the control device 46 answers the request message 750 and provides the requested and / or information, for example the charge state of the energy storage module, etc.

[0111] 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.

[0112] The registration message 440 includes, for example, a broadcast transmitter identifier 44x, i.e., a registration message addressed to multiple vacuum cleaners that are generally ready to receive, not just the vacuum cleaner 70. Furthermore, an authorization parameter 442 is optionally specified in the registration message 440. The authorization parameter 442 includes, for example, a basic system compatibility of the energy storage module 40 or the machine tool 20 with the vacuum cleaner 70. The authorization parameter 442 can include, for example, a manufacturer identifier or the like.

[0113] The external communication device 100 receives the registration message 440 using a function 416. The function 416 is active for a predetermined period of time, for example, 500 msec to 1000 msec, 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 step or transmission process 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 can be included in the registration confirmation message 445, for example, an access key, a password, or the like.However, the information 447 can also indicate, for example, a required or adjustable suction power of the suction unit 75 or similar other information favorable for later operation.

[0114] However, the registration of the energy storage module 40 with the external communication device 100 is only a temporary registration, which is necessary for current operation. Accordingly, the registration message 440 advantageously contains a temporary identifier 443, so that the external communication device 100 knows, so to speak, that only a temporary registration or temporary control connection is desired.

[0115] At this point, a difference to the so-called permanent registration of, for example, the communication module 300 becomes clear. Registering the communication module 300 requires a more complicated or difficult operating action by the operator N, namely, for example, a longer operation of the registration control element 106 than with a temporary registration. In a standby mode for a permanent control connection or communication relationship, the external communication device 100 issues a different signal for output to the display device 114 upon output command 414 than when registering for a temporary control connection, for example, a faster flashing of the LEDs or a flashing of the LEDs at a shorter frequency. Finally, in a registration message comparable to the registration message 440, the communication module 300 does not issue the temporary identifier 443, but rather a permanent identifier.

[0116] 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 "Connected" state 418. 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.

[0117] 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.

[0118] For example, the external communication device 100 transmits with an encryption parameter 451. If a previous encryption or previous communication has already occurred between the external communication device 100 and one of the energy storage modules 40A, 40B, the external communication device 100 accesses pre-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 the memory 118 of the external communication device.

[0119] By way of example, it is mentioned that other address identifiers and associated encryption parameters may also be stored in the memory 118, for example 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.

[0120] At this point, it should also be mentioned 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 using a message 455, so that encrypted communication between the components 100, 40 is possible and thus the state 421 "encrypted connection" is reached.

[0121] Optionally, the external communication device 100, in particular its control device 116, controls the display device 114 (step 423A) so that it signals the existing encrypted connection. For example, the display device 114 then lights up continuously.

[0122] It is also possible for an energy storage module to store multiple address identifiers and / or encryption parameters. For example, the energy storage module 40 or the control device 46 can be provided with the address data and encryption data of another vacuum cleaner not shown in the drawing, namely, for example, an address identifier 441B and an encryption parameter 451B of this other vacuum cleaner. Thus, the energy storage module 40 can also directly access another vacuum cleaner if necessary.

[0123] Returning to the functional communication process 400, further communication then proceeds, for example, as follows:

[0124] In a function 433 "Switch on," the energy storage module 40 sends, for example, a control command 460 containing a switch-on identifier 461 to the control device 46 in a transmission process 434. Furthermore, in an activation step 435, the control device 46 activates the display device 44 to display the established control connection S1 or S2. For example, the lights 445 then illuminate blue or in a different pattern than to indicate a charge level.

[0125] After receiving control command 460, external communication device 100, for example, controls control device 86 so that it switches on suction unit 75 in a step 422. Furthermore, external communication device 100, in particular its control device 116, controls display device 114 (step 423) so that it signals the switching on of suction unit 75. For example, display device 114 then lights up continuously.

[0126] If the operator N releases the switching element 24, for example, the current flow through the drive motor 22 is terminated. This can be detected by the control device 46, for example, using a corresponding current sensor 62. The supply voltage or bus voltage UB1 is also lower or smaller in this case. Furthermore, it is possible for the energy storage module 40 to actively send 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 N's ​​operating step 403, lead to a "switch off" function 436 of the energy storage module 40. This then sends a control command 462 to switch off the suction unit 75 in a transmission process 437, preferably after a predetermined run-on time for the suction unit 75, wherein the message or control command 462 contains a switch-off identifier 463.For example, the switch-off identifier 463 can specify a run-on time for the vacuum cleaner 70 or the suction unit 75.

[0127] 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 point 60 as a function thereof.

[0128] The response message 445 is, for example, a received signal ESI, based on which the energy storage module 40 outputs the response message 752 as a transmission information SM at the data interface 54.

[0129] In a "Switch off" function 427, the communication device 100 directly or under control of the control device 86 controls the suction unit 75 to switch off and the display device 114 to indicate the completed control. For example, the function 427 issues a control command 425 to the suction unit 75 directly or via the control device 86, namely the data interfaces 83 and 108.

[0130] 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, 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 transitions to 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, transitions to 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, the function 436 expediently outputs this new operating state to the display device 44, for example, by controlling the display device 44 using a control in a deactivation step 438 to signal the terminated control connection. The lights 45 then no longer light up blue, for example, but green, and signal the charge level of the energy storage device 42.

[0131] 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 specifies, for example, configuration data 755 for setting the vacuum cleaner 70, for example, a required suction power of the suction unit 75, a typical amount of particles 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 device 86 for further processing, in particular for suitable control of the suction unit 75, e.g., using a transmission process 437'.

[0132] It is preferred if the control device 86 and / or the external communication device 100 permanently store the configuration data 755 and associated with the respective machine tool 20A and 20B, for example in the memory 88 and / or 118.

[0133] It is also advantageous if an operator can override the stored configuration, so to speak, for example by actuating the control element arrangement 77. For example, a suction power of the suction unit 75 can be adjusted on a switching element 78A.

[0134] It is possible for suction parameters set directly by an operator on the vacuum cleaner, in particular suction parameters set on the switching element 78A or other operating elements of the operating element arrangement 77, to be stored permanently by the control device 86 and / or the external communication device 100 and assigned to the respective machine tool 20A and 20B, for example in the memory 88 and / or 118, if the vacuum cleaner is currently 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 sent wirelessly from the machine tool 20A or 20B.

[0135] However, a control connection can also be established automatically when an energy storage module 40 and a machine tool 20 are connected to one another. This is explained below using the example of one of the energy storage modules 40. However, it is also possible for the wireless communication interface 60C, for example, to automatically establish a respective control connection to the vacuum cleaner 70 or the external communication device 100 when the energy supply from the energy storage module 40 begins, so to speak, or when it is arranged at the device interface 30.

[0136] 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. The capacitive conditions change between the lines L1 and L2, i.e., at the energy-supplying contacts or the energy-supplying lines, when a respective energy storage module 40 is attached to a machine tool 20. The sensors 36, 66 are connected to the control devices 26, 46 or communicate with them. For example, the control device 46 can automatically send the registration message 440 when the sensor 66 detects that the machine tool 20 is connected, i.e., an operating state has been achieved.

[0137] To detect a separation 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 separation 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 of the machine tool 20 or the charger 220 specifically provided for the aforementioned purpose can, in particular, cyclically send a verification message CK, based on which the energy storage module 40 detects, for example, that it is connected to the machine tool 20 or the charger 220 or that there is no connection to such a device.It is possible that the processor 47 or a processor 47A specifically designated for this message is present at the energy storage module 40 to receive the verification message CK. The processor 47 and / or 47A can, for example, send a response message RP in response to the verification message CK.

[0138] It is also possible to detect by sensors in another way whether an energy storage module 40 and a machine tool 20 are in a separated state or in a connected operating state, namely when the device interfaces 30, 50 are connected to each other.

[0139] For example, a sensor 58 can sense an actuation of the actuating element 57 of the fixing device 55. If an operator presses the actuating element 57, thus intending to release the fixation of the fixing device 55, this is interpreted as a transition from the operating state to the disconnection state. In this case, the energy storage module 40, in particular the wireless communication interface 60, can, for example, automatically terminate the control connection S1 or S2. To do so, the wireless communication interface 60 sends, for example, a corresponding disconnection command or a disconnection message. It is particularly preferred if the vacuum cleaner 70 can also be switched off by actuating the actuating element 57, because the components 20 and 40 are separated from each other. For example, upon actuation of the actuating element 57, which can be detected by the sensor 58, the control device 46 sends the control command 462.

[0140] However, it is also possible that, for example, one or more motion sensors are provided, namely, for example, a motion sensor 59 in the energy storage module 40 and a motion sensor 59B in 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 device 40 and the machine tool 20 are in the operating state, ie in the state fastened to one another.

[0141] Furthermore, it is possible 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 exemplary in the energy storage module 40A according to Figure 5 but could easily also be provided at the device interface 30 of the machine tool 20 (see Figure 4 ).

[0142] Similar to the proximity sensors or optical sensors 68 (for example, ultrasonic sensors, magnetic sensors, or the like can also be provided), an electrical switch 68, in particular a pressure switch or push-button switch, is also actuated when the plug-in form-fitting contours 51 and 31 are engaged with each other, i.e., when the device interfaces 30, 50 are mechanically connected to each other. 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 registration message 440.

[0143] It is also possible for the energy storage module 40 to receive, as part of the received information EM, at least one item of status information, in particular error information and / or a switching position of a switch, of the electrical device and / or at least one item of identification information, for example a serial number, of the electrical device. For example, the energy storage module 40 can receive error information as status information 29C and identification information 29D, for example a unique identifier or a serial number of the machine tool 20, from the machine tool 20. It is possible for the machine tool 20 to send this received information EM spontaneously via the data interface 54, i.e. without prior query by the energy storage module 40 from the machine tool 20, or for the energy storage module 40 to query this received information EM from the machine tool 20.The error information may, for example, represent overheating or electrical overload of the machine tool 20. The identification information 29D may also include a type identifier, so that, for example, the type of machine tool 20, in particular a screwing device, sawing machine, or the like, can be identified from the identification information 29D.

[0144] The aforementioned received information EM is, for example, not security-relevant or to be kept secret. In particular, it is advantageous if the energy storage module 40 sends this received information EM as part of a broadcast communication or advertising communication cyclically or periodically and / or upon transition from the disconnected state to the operating state, i.e. upon connection to the machine tool 20, in particular unencrypted. Of course, encrypted communication can also take place 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 of 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.

[0145] 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. Nevertheless, the vacuum cleaner 70 would still function.

[0146] The communication modules 300A can be used to maintain or establish a control connection via their communication interfaces 311. For example, a control connection S6 can be established from the handheld power tool 20B or the energy storage module 40B to the vacuum cleaner 70 or the external communication device 100, which is established and / or maintained at least partially by the communication modules 300B and 300C.

[0147] 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 in order to send the control command 460 and / or 462, i.e. to switch the suction unit 75 on and off. On a communication section or connection section S6.2, the communication module 300 communicates this information or this control command to the communication module 300B, which in turn forwards the received control command or the received 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 only a short distance from the system components 20B / 40B on the one hand and the vacuum cleaner 70 orof the communication device 100, the connecting sections S61 and S63 are short. Accordingly, the transmission power of the external communication device 100 and the wireless communication interface 60 / 60C can be particularly low.

[0148] In particular, on a short transmission path between the respective communication module 300B and the wireless communication interface 60, 60C or 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 so short that interference from a third party or a disruptive control command is not even received and forwarded by the communication modules 300B and 300C.

[0149] Of course, 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, i.e., they can operate unidirectionally, either from the vacuum cleaner to the machine tool or vice versa, from the machine tool to the vacuum cleaner, or even bidirectionally. The gateway function is expediently bidirectional. For example, the vacuum cleaner 70 can communicate a 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, if necessary, cease operation if dust removal is no longer possible.

[0150] 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.

[0151] It is not absolutely necessary to provide two communication modules to implement the gateway function, one of which is located closer to the vacuum cleaner and the other closer to the machine tool or its energy storage module. For example, it is possible for a communication module 300, such as communication module 300A, to serve as a gateway between the external communication device 100 and the energy storage module 40A.

[0152] The communication modules 300 can also assist in establishing communication relationships, particularly 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.

[0153] 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 oriented toward near-field communication, for example, an RFID communication interface or an NFC communication interface.

[0154] Other components of system 10 also expediently have additional communication interfaces of this second standard. 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 vacuum cleaner housing 71, in particular as a communication interface 84.

[0155] 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 connections or signaling connections S1, S2. Control connections S3 and S4 of the communication modules 300A and 300B, which they use to control the vacuum cleaner 70, for example, 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.

[0156] Some variants are presented below: For example, the address identifier 441 of the vacuum cleaner 70 and the encryption parameter 451, which are necessary for establishing a control connection with the vacuum cleaner 70 or the external communication device 100, are stored as communication parameters 85 in the communication interface 84 and / or the communication interface 109. If one of the communication modules 300A, 300B, or 300C, with its communication interface 318, enters the transmission range of the communication interface 109 and / or the communication interface 84, it can read the communication parameters 85. The reverse procedure is also possible, for example, the communication parameters of the communication module 300 are stored there and can be read by one or both of the communication interfaces 109, 84.

[0157] 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 in the vicinity of the communication interface 84. A respective energy storage module 40 can also read or receive the communication parameters 85 from the communication interface 84 and / or 109 using its communication interface 67.

[0158] 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 in the form of, for example, an NFC transmitter or RFID transmitter can also be implemented. The communication interface 909 is arranged, for example, at the longitudinal end region 17 of the suction hose 15. For example, the communication interface 909 comprises 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 be, for example, an RFID tag, NFC tag, or the like. Further parameters 911 can also be stored in the communication interface 909, for example, a hose 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.

[0159] 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 cup housing 71, namely at the communication interface 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 a buffer for the communication parameters 85.

[0160] Another possibility for switching the external communication device 100 or the vacuum cleaner 70 to standby mode to establish a control connection is realized, for example, by an acceleration sensor or motion sensor 312. The acceleration sensor 312 sends acceleration signals to the control device 336, which, based on the motion signals or signaling signals from the acceleration sensor 312, detects a typical plug-in movement or assembly movement of the suction hose 15 on the handheld power tool 20A, 20B. For example, the control device 336 detects, based on the acceleration sensor 312, a typical plug-in movement, which represents a linear movement and / or rotational movement with a predetermined length, namely the plug-in path when plugging the suction hose 15 into one of the suction outlets 39.

[0161] Furthermore, it is possible for a movement pattern to be detected using another motion sensor 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 movement pattern and transmit it to the communication module 300 via the wireless communication interface 60. The communication module 300 compares the movement pattern of the motion sensor 59 with a movement pattern of the motion sensor or acceleration sensor 312. If both movement patterns are identical, this indicates that the suction hose 15 is or will be attached to the machine tool 20, for example, if the movement patterns are in the same direction but opposite directions. 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 acceleration sensor 312 and / or 59 can thus, 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.

[0162] For configuration and / or control, a device located outside the system comprising machine tool, energy storage module, suction hose, and vacuum cleaner can also be used, namely, 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. The housing 501 is also not part of one of the machine tools 20 or the energy storage modules 40. However, it would be conceivable for a module receptacle 96 to be provided on the vacuum cleaner 70, for example, 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 means 503 can be part of the display device 502, for example in the form of a touchpad.

[0163] The configuration device 500 comprises a control device 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 may be suitable for configuring the control connections S1-S4. The configuration module 510 comprises 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, for example, 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, an input to the input means 503 in the manner of an actuation of one of the registration control elements 316 or 106 is possible.The configuration device 500 then executes, for example, program code of the configuration module 510 to switch the external communication device 100 into the standby mode, in which the energy storage modules 40 or the machine tool 20 can be authorized to establish the control connection.

[0164] Furthermore, the configuration device 500 expediently has 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.

[0165] At this point, it should be added 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 cup housing 71 and / or the external communication device 100 in order to read out the communication parameters 85 and / or to send their communication parameters thereto.

[0166] At this point, it should be added 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 proximity 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 thereto. 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 second communication standards.

[0167] 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 transmitted to an energy storage module 40 or a program module 29 can be transmitted to a machine tool 20. Furthermore, configuration data 29A, for example, operating parameters and / or machine settings (maximum speeds, maximum power outputs, service life limits, or the like), for the machine tool 20 can be transmitted 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 device 26.

[0168] Of course, a gateway function of a machine tool to the energy storage module is also possible, ie, 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.

[0169] In the reverse direction, for example, data from the machine tool 20 can be received by the energy storage module 40 and transmitted to the configuration device 500, such as protocol data 29B, in particular data from an error memory, a log file, or the like. The error memory can contain, for example, errors that occurred during operation of the machine tool 20, in particular temperature exceedances or the like. The log file contains, for example, data about the use of the machine tool 20. Using the energy storage module 40, which functions as a gateway, for example, usage time, error situations, or the like can be read from the machine tool 20 using the configuration device 500. The machine tool 20 does not require its own radio interface or other wireless interface.

[0170] Control information can be sent on the control connections S1 - S6, for example switching commands for the suction unit 75, dust class, speed setting, power consumption, contact pressure and particle generation or dust generation of a respective machine tool 20. Furthermore, a configuration of the vacuum cleaner 70 is possible, ie configuration data or signal data are transmitted from the machine tool 20 and / or the energy storage modules 40 to the vacuum cleaner 20 via one or more of the control connections S1 - S6, for example run-on time after switching off the suction unit, required power of the suction unit or the like.

[0171] 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, for example, the registration control element 106 must be pressed and held. This ensures that only an authorized and authorized device is registered.

[0172] A prioritization and security concept is presented below: For priority control of the vacuum cleaner 70, the components of the system 10 that are permanently registered with the vacuum cleaner 70 for control are provided, e.g. the network-connected machine tool 20C and the communication modules 300 as well as the configuration device 500. If a switch-on signal or switch-off signal for the suction unit 75 comes from one of these components, this is treated by the vacuum cleaner 70, in particular its control device 86, with priority over a corresponding control command from the machine tools 20A and 20C equipped with the energy storage module 40.

[0173] Furthermore, operation of one of the control elements of the control element arrangement 77 takes priority. For example, if the switching element 78 is actuated, any other control connection takes precedence.

[0174] For the remote controls, such as the communication modules 300 or the configuration device 500, a one-to-one relationship with the vacuum cleaner 70 is provided. Thus, a remote control cannot mistakenly control a different vacuum cleaner. It is also always advantageous if only one machine tool with an energy storage module is authorized for the vacuum cleaner 70 and can control it. As soon as another or different machine tool is authorized, the authorization of the previously authorized machine is deleted. Thus, only one of the control connections S1 or S2 is possible in the specific embodiment.

[0175] Instead of the current detection of the socket 79, or in addition to it, a compressed air detection could also be provided. Thus, for example, a device operated with compressed air, such as a grinder or polishing machine, can be connected to the vacuum cleaner 70. When this is switched on or off, the suction unit 75 runs or is switched off again. In this case, a corresponding compressed air sensor is provided on the connection device. The connection device can be a flow device, i.e., compressed air is fed into the vacuum cleaner 70 on the one hand and tapped off, so to speak, by the compressed air machine (not shown in the drawing) on ​​the other. If a compressed air machine or mains-powered machine (machine tool 20C) is switched on and connected to the vacuum cleaner 70, this has the highest priority. The communication modules 300 and the configuration device 500, as well as the switching element 78, have a medium priority.

[0176] The lowest priority is given to battery-powered machines or machine tools 20A, 20C equipped with energy storage modules.

[0177] To revoke an authorization or to terminate a control connection S1-S6, it can advantageously be provided that this is triggered by the termination of the respective power supply. For example, if an energy storage module 40A, 40B is disconnected from the power supply of the machine tool 20A, 20B, the control connections S1 or S2 are automatically terminated. Also, if 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 the energy storage module 40 or the machine tool 20 sends a switching command to switch off the suction unit 75 upon such a disconnection.

[0178] A remote control, for example the communication module 300 or the configuration device 500, expediently logs on to the external communication device 100 or the wireless interface 60 with a new identity when the power supply is terminated, for example the power supply 310 has been removed. This allows, for example, new encryption to be set up. If a new identity is present, i.e., for example, a new address identifier is present, both communication partners are ready to negotiate new encryption parameters. If competing wireless communication interfaces 60, 60C wish to establish a control connection with the vacuum cleaner 70 or the external communication device 100, the first wireless communication interface 60 to log on 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.

[0179] 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 embodiment according to Figure 1 For example, this could be the energy storage module 40A that 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, indicating the signal strength with which it sends the registration message 440.

[0180] Using a sensor 111 measuring signal strength, 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 a distance between the components 40A and 100.

[0181] 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.

[0182] It is also possible that no signal strength information 448 is included in the registration message 440. In this situation, the sensor 111 can compare the signal strength of the registration message 440 with a threshold value, for example.

[0183] Furthermore, it is possible for the sensor 111 to directly compare, for example, the signal strengths of the registration messages 440 of the energy storage modules 40A and 40B and to respond exclusively or earlier, ie with a shorter response time, to the registration message 440 which has a greater signal strength.

[0184] Prioritizing communication partners located closer to the external communication device 100 can, for example, provide that the external communication device 100 sets different response times. This is in Figure 16indicated. For example, a response time AS(t) is greater or lesser depending on a signal strength S measured by sensor 111. For example, external communication device 100 can respond more quickly to the registration message 440 of energy storage module 40A, which has a greater signal strength, and send a response message, for example, the registration confirmation message 445, than to a corresponding registration message 440 of energy storage module 40B.

[0185] It is preferred if the communication parameters stored in the 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 the device has been completely disconnected from a power supply. It is also advantageous for the mobile device, namely, for example, the energy storage module 40A, 40B, if the communication parameters are deleted from the memory 48 after a predetermined time and / or after the device has been completely disconnected from a power supply.

[0186] Furthermore, it is possible for 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, ie that the control connections S1, S2 are considered to be 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.

[0187] Furthermore, it is expedient if the communication parameters of a mobile device that can establish a control connection are reset in connection with a charging process, so for example if the energy storage module 40 is connected to the charger 220, the parameters 441, 451 are deleted.

[0188] By correspondingly actuating the registration control element 316 of the communication module 300, for example by pressing it for a correspondingly 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.

[0189] One in the Figure 15 The system shown comprises a machine tool 20D, which is a mains-connected machine tool or a machine tool operable with an energy storage module 40D. The energy storage module 40D and another energy storage module 840, which is suitable for operating a vacuum cleaner 870, are functionally equivalent, for example, to the energy storage module 40B. The design is also evident from the drawing.

[0190] The machine tool 20D, for example, is a grinding device for grinding a workpiece W. Using the suction hose 15 and the connecting piece 17, the machine tool 20D can be connected to the vacuum cleaner 870, namely to a suction inlet 872.

[0191] 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 top of, under, or into a stack, which also includes, for example, containers for storing hand tools, machine tools, e.g., the machine tool 20D, and the like. The connecting components for forming such stacks will not be discussed in detail. For example, on the front side of the vacuum cleaner housing 871, one can see a plurality of coupling elements 801, such as tabs, bars, or the like, for coupling to a stacked container and / or a container stacked under it.

[0192] A suction unit 875 similar to the suction unit 75 is arranged in the interior of the vacuum cleaner housing 871, which can be closed by a lid. A filter 874 and a dirt collection chamber 873 are also located there, in particular in a container removable from the vacuum cleaner housing 871. A device interface 830 is provided on the outside or in the interior 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.

[0193] The energy storage module 840 can now communicate directly with the energy storage module 40D. Thus, the machine tool 20D can control the energy storage module 840D via its energy storage module 40D, which in turn controls the vacuum cleaner 870 to switch on and / or off the suction unit 875. Communication takes place via the previously explained data interfaces 34, 54 between the respective first and second system components, namely the machine tool 20D and the energy storage module 40D as well as the vacuum cleaner 870 and the energy storage module 840. At this point, it should be mentioned that the registration using, for example, the registration message 440 is also possible in the system according to Figure 15is possible. However, it is also possible that the energy storage modules 40D and 840 already constitute a communication pair authorized for mutual communication. Thus, no operator intervention is necessary to establish the control connection between the vacuum cleaner and the machine tool.

[0194] It is possible for the machine tool 20 and / or the charger 220 to switch on the supply voltage UB1 or supply voltage UB2 periodically or cyclically, so that the energy storage module 40 detects that it is connected to the machine tool 20 or the charger 220, in particular in order to maintain a corresponding control connection with, for example, the vacuum cleaner 60 in the case of the connection to the machine tool 20 even when the latter is switched off, or not to establish such a control connection in the case of the connection to the charger 220.

[0195] A preferred concept provides that an energy storage module 40 and / or the configuration device 500 and / or at least one communication module 300, if authorization already exists for a vacuum cleaner 60 or the external communication device 100, first re-establishes a connection with this, so to speak, stored vacuum cleaner. In this case, authorization already exists. In this case, the registration message 440 with the broadcast transmitter identifier 44x is omitted, i.e., a registration message that is addressed to several vacuum cleaners that are generally ready to receive, not just the vacuum cleaner 70. Advantageously, a registration message 440 in this case expediently contains an address identifier for the vacuum cleaner 70.

Claims

1. Electric apparatus as a first or second system component (11, 12) for a system comprising as a first system component (11) a machine tool (20) and as a second system component (12) an electric energy storage module (40) for providing electric energy for the first system component (11), wherein the system components (11, 12) have matching apparatus interfaces for releasable mutual attachment and for transmitting electric energy from the energy storage module (40) to the machine tool (20), wherein the electric apparatus has a communication interface for a wireless control connection (S1, S2) to or from a vacuum cleaner (70, 870) to activate the vacuum cleaner (70, 870), which is provided for extracting dust generated by the machine tool (20) and is a separate vacuum cleaner (70, 870), and wherein the apparatus interfaces are electrically and / or mechanically disconnected from each other in a disconnection state and electrically and / or mechanically connected to each other in an operating state, wherein the electric apparatus is, at a transition from the disconnection state to the operating state, equipped for sending or receiving at least one log-in message (440) for building up the control connection (S1, S2) and / or, at a transition from the operating state to the disconnection state, equipped for terminating the control connection (S1, S2) and / or for sending a disabling signal for a suction unit (75) of the vacuum cleaner (70, 870), characterised in that the apparatus interface comprises a data interface, in particular a bus interface, and in that the electric apparatus is equipped for the identification of the operating state and / or the disconnection state using a data traffic via the data interface.

2. Electric apparatus according to claim 1, characterised in that it has at least one sensor for detecting the operating state and / or the disconnection state of the apparatus interface.

3. Electric apparatus according to claim 2, characterised in that the least one sensor comprises or is represented by a sensor for the detection of at least one electric variable, in particular an electric capacitance, of the respectively other system component (11, 12), and / or in that the least one sensor comprises or is represented by a distance sensor for the detection of a mutual distance of the system components (11, 12) and / or a motion sensor for the detection of a movement of the system components (11, 12) relative to each othe and / or an optical sensor for the detection of the respectively other system component (11, 12).

4. Electric apparatus according to claim 2 or 3, characterised in that the least one sensor comprises an electric switch, in particular a pressure switch or pushbutton, which can be actuated by attaching the system components (11, 12) to each other.

5. Electric apparatus according to any of the preceding claims, characterised in that it has a mechanical actuating element, in particular a pushbutton, for actuating a fixing device, in particular a locking device, for fixing the system components (11, 12) to each other, wherein it is advantageously provided that it has at least one sensor for the detection of an actuation state of the actuating element, wherein the electric apparatus rates an actuation of the actuating element towards a release of the fixing device as a transition from the operating state to the disconnection state.

6. Electric apparatus according to any of the preceding claims, characterised in that the one apparatus interface has plug-in positive-locking contours (51) for affixing to mating plug-in positive-locking contours of the other apparatus interface along a plug-in axis and electric contacts for contacting mating contacts of the other apparatus interface for an electric connection of the system components (11, 12), which come into contact with each other at a plugging-together of the plug-in positive-locking contours (51) and the mating plug-in positive-locking contours.

7. Electric apparatus according to any of the preceding claims, characterised in that the energy storage module (40) has a module housing (41) and an energy store accommodated in the module housing (41), in particular an assembly with at least one rechargeable electric storage cell, for the provision of electric energy for the energy supply of supply contacts (52) provided on the machine tool (20) or the vacuum cleaner (70, 870).

8. Electric apparatus according to any of the preceding claims, characterised in that it comprises at least one checking message, in particular exclusively provided for checking the operating state or the disconnection state for the identification of the operating state and / or the disconnection state.

9. Electric apparatus according to any of the preceding claims, characterised in that it is equipped for an authentication when building up the control connection (S1, S2).

10. Electric apparatus according to any of the preceding claims, characterised in that the communication interface is equipped for an encrypted communication via the control connection (S1, S2).

11. Electric apparatus according to any of the preceding claims, characterised in that it forms the second system component (12) and thus an electric energy storage module (40) and is equipped for the reception of at least one reception information (EM) from the first system component (11) in connection with a transition from the disconnection state to the operating state, and in that it is equipped for the in particular encrypted sending of the at least one reception information (EM) as broadcast information or advertising information via the wireless communication interface (60).

12. System (10) comprising an electric apparatus according to any of the preceding claims and the respectively other system component (11, 12), so that a system combination of energy storage module (40) and machine tool (20) is formed, wherein it is advantageously provided that it comprises the machine tool (20) activated via the control connection (S1, S2) or the vacuum cleaner (70, 870) activated via the control connection (S1, S2).

13. Method for a system with an electric apparatus comprising as a first system component (11) a machine tool (20) and as a second system component (12) an electric energy storage module (40) for providing electric energy for the first system component (11), wherein the system component (11, 12) have matching apparatus interfaces for releasable mutual attachment and for transmitting electric energy from the energy storage module (40) to the machine tool (20), wherein the electric apparatus has a communication interface for a wireless control connection (S1, S2) to or from a vacuum cleaner (70, 870) to activate the vacuum cleaner (70, 870), which is provided for extracting dust generated by the machine tool (20) and is a separate vacuum cleaner (70, 870), and wherein the apparatus interfaces are electrically and / or mechanically disconnected from each other in a disconnection state and electrically and / or mechanically connected to each other in an operating state, wherein the method comprises: - sending or receiving, at a transition from the disconnection state to the operating state, at least one log-in message (440) for building up the control connection (S1, S2) by the electric apparatus and / or, - at a transition from the operating state to the disconnection state, by terminating the control connection (S1, S2) and / or sending a disabling signal for a suction unit (75) of the vacuum cleaner (70, 870) by the electric apparatus, wherein the apparatus interface comprises a data interface, in particular a bus interface, and wherein the electric apparatus identifies the operating state and / or the disconnection state using a data traffic via the data interface.

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