EP3380278B1 - System formed by at least one hand-held power tool, at least one first interface, and at least one electrotechnical product - Google Patents

Description

The present invention relates to a system according to claim 1.

Electrical hand machine tools are known in principle and are supplied with power via a mains connection. An example is known from the US2014159662A1 , Alternatively, cordless tools allow a high degree of flexibility when working, as they are particularly independent of mains power. In this way, for example, external work can also be carried out conveniently, so that when a handheld power tool is operated, it is often intended to use battery packs.

Electrotechnical products, in particular unmotorized electrotechnical products, such as, for example, a charger for a battery pack of a hand tool, a construction site radio, a measuring device or a construction spotlight are known in principle and are generally supplied with power via a mains connection. Alternatively, cordless tools allow a high degree of flexibility when working, as they are particularly independent of mains power. In this way, for example, outdoor work can also be carried out comfortably, so that battery packs are often provided for when the electrotechnical product is in operation. An electrical hand machine tool differs in particular from an electrotechnical product that is used in the handicraft area is that, in contrast to the hand tool machine, the electrotechnical product has no motor and is therefore unmotorized.

Such battery packs are generally known and have rechargeable batteries, generally a plurality of battery cells connected in parallel and / or series connection. In the course of this application, a battery pack is to be understood as meaning a battery pack that preferably consists of several electrically interconnected battery cells, which can store electrical energy and which supplies the energy required for operating a hand-held power tool. For example, three cylindrical Li-ion cells connected in series with, for example, 3.6 V each to a total voltage of 10.8 V may be provided.

Hand-held power tools are known from the prior art, which use a communication interface in the form of an infrared transmission device, for example, for the transmission of data, parameters or the like. Corresponding data can be exchanged between handheld power tools and an external interface by means of this infrared transmission device. It proves to be disadvantageous that such infrared transmission devices can only be used to a limited extent, since on the one hand obstacles can be arranged between the handheld power tool and the external interface, which prevent transmission, or a movement of the user at least temporarily interrupts the corresponding connection. In addition, the infrared connection can only be used for limited ranges. In the case of permanently integrated infrared transmission devices, it proves disadvantageous that an exchange of the infrared transmission devices is often not possible and / or the exchange process is complex and cost-intensive.

In general, products from the artisan sector with communication interfaces have the disadvantage that the communication interfaces are permanently installed or integrated in the respective product, such as in EP 2 680 093 A2 described. The disadvantage of this is that each product must have its own communication interface, which represents a high cost factor and, in the event of a defect in the communication interface, makes replacement either complex and cost-intensive or not possible at all.

The object of the present invention is to provide a communication interface which can be used flexibly in different products from the craft sector.

This object is achieved by a system according to claim 1. Advantageous refinements, variants and developments of the invention can be found in the subclaims.

According to the invention, a system is disclosed with at least one handheld power tool, the handheld power tool being a Has housing with a handle and a drive motor arranged in the housing, wherein the drive motor is coupled to a tool holder. The tool holder is provided for receiving or non-rotatably attaching an insert tool to the hand machine tool. For example, the insert tool can be a drill for a drilling machine, a cutting disc for an angle grinder or a saw blade for a circular saw. The system comprises at least one first interface, the first interface being designed to receive information from at least one second external interface and / or to send it to at least one second external interface. The system further comprises at least one electrotechnical product, in particular an electrotechnical product without a drive motor, with a housing. According to the invention, it is provided that the housing of the hand-held power tool and the housing of the electrotechnical product each have a receiving opening, the first interface being removably arranged in the receiving openings. Furthermore, the receiving opening can be closed releasably by a cover, the cover closing off the housing from the outside. In this way, the first interface can be detachably attached to the hand-held power tool and the electrotechnical product, the receiving opening enabling simple and inexpensive replacement of the first interface arranged in the housing of the hand-held power tool and the electrotechnical housing. Because the first interface can be installed in all handheld power tools and electrical engineering products according to the invention, a first interface is advantageously sufficient to expand all handheld power tools and electrical engineering products with the functions of the first interface, since the first interface can be used in the handheld power tool to be used or electrotechnical product can be attached. In other words, the first interface is designed to be exchangeable between the at least one handheld power tool and the at least one electrotechnical product of the system.

The handheld power tool or the electrotechnical product also advantageously has a control unit within the housing. The control unit can on the one hand be in contact with the drive motor and / or with the transmission and / or with a battery pack electronics of a battery pack or a measurement electronics of a measuring device and on the other hand with the are in electronic and / or mechanical contact with the first interface and receive and / or send information from the first interface.

The housing of the handheld power tool and / or the housing of the electrotechnical product can comprise an interface housing, which is formed in one piece with the respective housing. Advantageously, the interface housing forms the receiving opening directly in the housing wall of the handheld power tool and / or the electrotechnical product, wherein the receiving opening can be pot-shaped or box-shaped with a peripheral side wall and a bottom surface. It is particularly advantageous that a pot-shaped receiving opening has an almost circular opening, which additionally stiffens the housing of the hand-held power tool and / or the electrotechnical product, which is basically weakened by the opening. The interface housing, in particular the bottom surface of the interface housing, also has at least one opening for the passage of connecting elements, for example at least one electrical line in the direction of other electrical components, such as, for example, the control electronics, measurement electronics, and / or the battery pack electronics. Alternatively or additionally, it is conceivable that such an opening is formed in the region of the side wall. In this way, an electrical connection between the first interface and the electrical components of the handheld power tool and / or the electrotechnical product can advantageously be established.

Alternatively, the interface housing can be formed in two parts with the housing of the handheld power tool and / or the electrotechnical product, and an interface housing for receiving the interface can be arranged in the receiving opening. In a particularly preferred embodiment, the interface housing forms an independent module with the first interface and the cover, which module can be detachably inserted within the receiving opening. In particular, the cover and the interface housing can be configured in one part, alternatively also in two parts, the module being inserted into the receiving opening of the handheld power tool and / or the electrical product and being detachably fastened, for example, by a screw connection between the receiving opening and the interface housing, or by other connecting elements , In this way, the entire first interface is particularly compact and can be quickly and easily in the handheld power tool and / or assemble, replace and / or retrofit in the electrotechnical product. In this way, an exchange and / or repair can be carried out quickly, easily and inexpensively.

The interface housing can be fastened in the housing of the hand-held power tool and / or the electrotechnical product, or alternatively it can also be inserted into the receiving opening and only held in the receiving opening with the aid of the cover. Preferably, the first interface is largely free of play, for example by means of a click connection, arranged in the receiving opening so that no rattling noises or the like can occur and inadvertent loosening of the first interface is also prevented during operation. It is also advantageous if the receiving opening or the interface housing are designed such that the first interface can only be introduced in one way, so that the contact board or the first interface is incorrectly installed within the receiving opening of the handheld power tool and / or the electrotechnical product can be safely prevented.

The cover is advantageously curved in such a way that it follows the contour of the housing wall and is flush with it. The cover can be made from different plastic materials such as polyamide 6, polyamide 66, PC (polycarbonate), ABS (acrylonitrile-butadiene-styrene copolymer) or from a material mix of different plastics, and / or glass fiber reinforced. The cover preferably has the same material as the housing of the handheld power tool and / or the electrotechnical product.

In order to enable safe but easy access to the receiving opening and the first interface arranged therein, it is advantageous if the cover is rotatably locked, in particular by means of a screw or bayonet lock. A further embodiment is a cover which is pivotably mounted about a pivot axis and which can be releasably locked to the housing on the side of the cover opposite the pivot axis by latching, screwing, jamming or clamping. In this way, a possible falling off of the cover from the housing or a loss of the cover can be effectively counteracted. The lid can also have a slot-shaped depression, which means that the lid can be easily opened by means of a coin or a screwdriver. The bayonet catch is easy to use actuate and still ensures a secure closure of the receiving opening. Additionally or alternatively, the cover can also be attached to the housing by means of at least one connecting element, in particular by means of at least one screw.

The first interface preferably has a radio module, in particular the first interface consists of a radio module, the radio module being a radio signal based on electromagnetic waves, for example a Bluetooth signal, in particular a Bluetooth low energy signal, a WLAN signal or an NFC signal receives and / or sends. The radio module is an electrotechnical component that is used to establish a communication link over a radio network in a wide variety of areas. For example, radio modules are already used for applications in the so-called machine-to-machine (M2M) environment, such as in the field of industrial automation, in motor vehicles to support applications in the field of telematics or for remote access Consumption meters such as electricity, gas or water meters. In general, the use of a radio module makes it possible to carry out wireless data transmission over a radio network, which in particular avoids the effort required for cabling that would otherwise be required. In this way, transmission of data, parameters or the like from and to an external second interface can be made possible with a simple design effort.

A WLAN module, for example an 868 MHz module or a 915 MHz module, or else a Bluetooth module can be used as a preferred exemplary embodiment of such a radio module. Other types of radio modules can also be used. The radio network can be a communication network of any wireless communication standard, such as WLAN (Wireless Local Area Network), Bluetooth, GSM (Global System for Mobile Communications), GPRS (General Packet Radio Service) or UMTS (Universal Mobile Telecommunications) System). In addition, particularly in the field of industrial automation, wireless communication networks with a comparatively short range, which are also specially adapted to the corresponding requirements and are also referred to as "wireless personal area networks (WPAN)", are increasingly being used. Examples of this are radio networks according to one of the standards IEEE 802.15.4 or WirelessHART.

An active radio module advantageously sends out a signal every eight seconds. Alternatively and depending on the energy supply, the signal can also be sent at shorter or longer intervals. In particular in the case of an energy supply by a second energy store, which is assigned to the radio module or the first interface, the radio signal can be emitted, for example, every ten, 20 or 30 seconds, whereas in the case of an energy supply by the first energy store, which is assigned to the hand-held power tool or the electrotechnical product is, the radio module sends out a signal every four or even every second. The corresponding radio module of the transmission device can in particular be connected in series with the drive control, a measuring device for measuring various system variables, or the like. Such system variables are, for example, the motor speed of the drive motor, a torque, a direction of rotation, etc. for the handheld power tool, a volume for the construction site radio, a charge level of the battery pack, a luminosity of a construction site spotlight or a measurement variable of a measuring device.

In order to be able to supply the first interface with sufficient power in a simple manner, it is provided according to a preferred development of the invention that the radio module, in particular the first interface, is supplied with energy via the power supply of the hand tool or the electrotechnical product. This is ensured by means of a detachable connection of the first interface to the first energy store. The first energy store is to be understood in particular to mean the power supply and / or the energy store of the handheld power tool and / or the electrotechnical product. The power supply can take place via a mains cable.

Alternatively, it is conceivable for the radio module to have a second energy store, which is arranged within the interface housing, the radio module being connected to the first energy store and / or to the second energy store. The first interface can advantageously consist of the radio module and the second energy store. According to the invention it is provided that the radio module in the case in which the power supply of the hand tool and / or the electrotechnical product is available and has sufficient energy, via the power supply of the hand tool and / or the electrotechnical product with energy is supplied; and in any other case is supplied via the second energy store. In this way, a power supply to the radio module can be guaranteed at all times.

Furthermore, it is advantageous if the second energy store is connected to the radio module by means of plug or touch contacts, and if the first interface also has a resilient action in the form of an elastic element, thereby ensuring reliable electrical contacting. In principle, it can be provided that an elastic element, for example a spring element, is arranged between the cover and the second energy store or between the bottom surface of the receiving opening and the second energy store in order to close the second energy store against the contact connections provided within the first interface when the cover is closed to press. Such a second energy store, for example a button battery, is advantageously interchangeable. According to the invention, this can be achieved by opening the lid, so that a user can remove the second energy store through the opening from the receiving opening and replace it with a full or charged second energy store. By closing the cover again, the second energy store is safely stored within the receiving opening. In this way, an exchange of the entire first interface together with the radio module is avoided and safe operation of the first interface is ensured in a simple manner for a long time.

Alternatively, the second energy storage device can also be designed to be rechargeable, the second energy storage device being electrically connected or connectable to an energy supply for the hand-held power tool and / or the electrotechnical product, in order to ensure charging of the second energy storage device. If the handheld power tool and / or the electrotechnical product has a second energy store in the form of a battery pack or a mains plug, the second energy store of the first interface is again the energy provided by the power supply or the battery pack of the handheld machine tool and / or the electrotechnical product rechargeable. In this case, a control unit is advantageously provided within the first interface, which charges the second energy store of the first interface as a function of the energy supply of the handheld power tool and / or the electrotechnical product and / or merely supplies the energy of the first interface via the energy supply of the Handheld machine tool and / or the electrotechnical product enables, whereby permanent operation of the first interface can be guaranteed in a simple manner.

It is also advantageous if the first interface has at least one contact board, in which case the contact board electrically connects the radio module and the control unit of the hand-held power tool and / or the electrotechnical product to one another and enables wired or wireless data exchange. Furthermore, the contact board can provide additional space for accommodating additional electrical units, such as for the control unit mentioned above. In this regard, the contact board has at least one, preferably two connecting elements, for example plug connectors for plug contacts, at least one connecting element ensuring the data exchange and / or the energy supply with or by the control unit of the hand-held power tool and / or the electrotechnical product and / or a further connecting element for data exchange and / or ensures the energy supply from the contact board to the radio module via a touch contact, for example a SIM card contact.

In an alternative embodiment, the first interface does not have its own contact board, in which case the radio module and / or the second energy storage device are directly electrically connected wirelessly or by wire to a contact element on the tool side. In a further embodiment, it is also possible to arrange the first interface within the receiving opening without contacting the handheld power tool and / or the electrotechnical product, so that the handheld power tool and / or the electrotechnical product can at least be located by means of the radio module.

The first interface preferably also has at least one damping element, in particular a viscoelastic element, which is advantageously ring-shaped, for example in the form of an O-ring or web, and is elastically deformable. The damping element can be formed in one piece with the interface housing, with the receiving opening, with the cover, and / or with the contact board, or as a separate component. The damping element is preferably arranged between the cover and the contact board or the radio module. Alternatively or additionally, the damping element can also be between the contact board or the radio module and the bottom surface or the side wall of the receiving opening. This ensures that the first interface within the receiving opening and / or within the interface housing is reliably protected from external influences.

The contact board is advantageously fastened within the receiving opening or within the interface housing by means of latching, the holding force being able to be ensured by the damping element. Correspondingly, the receiving opening and / or the interface housing can have a plurality of different latching elements, by means of which the first interface or a single component thereof can be locked in the interface housing or within the receiving opening and can be fastened largely without play.

Furthermore, it is possible for alignment elements, for example ribs and webs, to be arranged inside the receiving opening and / or on the first interface or the interface housing, by means of which an unambiguous arrangement or alignment of the first interface or the interface housing within the receiving opening can be made possible. Incorrect installation can thus be prevented in a simple manner.

The system according to the invention can also be provided in a tool system. Accordingly, a system together with an external unit, which has a second interface, which in turn is designed to receive and / or send information from the first interface, forms a further subject of the invention. According to the invention, it can be provided that the external unit is a smartphone, an electronic data processing system.

This system, in particular a tool system, enables a safe exchange of data, parameters or the like between the electrical product, the hand-held power tool and the external unit with simple constructional effort and over greater distances, as a result of which control of the operating modes and / or retrieval of the hand-held power tool and the electrotechnical product can be facilitated. Furthermore, by means of an electrotechnical product according to the invention or in a system according to the invention, several electrotechnical products can be grouped and operated together by means of the external second interface and the respective radio module.

It is particularly advantageous that the electrotechnical products can communicate directly with one another by means of the external second interface and / or via their radio modules.

A handheld power tool is generally understood to mean all handheld power tools with a tool holder which can be set in motion, for example in rotation and / or vibration and which can be driven by a drive motor, such as, for example, screwdrivers, cordless drills, impact drills, multi-function tools and / or drill drivers. In this context, transmission of electrical energy is to be understood in particular to mean that the hand power tool is supplied with energy via a rechargeable battery and / or via a power cable connection.

In principle, lithium-ion cells can be used as battery cells for a battery pack, since it is possible, particularly in the case of lithium-ion cells, to combine several battery cells into battery cell blocks in which several battery cells are connected in parallel.

The electrotechnical product can also be used as a measuring device, in particular an unmotorized measuring device, such as in DE 10 2012 210 009 A1 is described in the form of a locating device. A measuring device can generally comprise at least one housing in which the measuring unit is accommodated and a display unit, for example in the form of a display. The measuring unit can have measuring electronics and measuring elements, which can be designed, for example, to detect objects enclosed in walls, to measure distances, to record environmental parameters such as the temperature, the air humidity, the brightness, the composition of the air, etc. and via the To present the display unit to the user.

The electrotechnical product can be designed as a portable electrotechnical product, as a hand-held lighting device, in particular as a construction spotlight, as a construction site radio, as a measuring device or as a charger for a battery pack of a hand-held power tool, the radio module, the type of electrotechnical product and / or the components used therein, how the type of battery pack, the type of built-in lamps or the like can be identified using a transmitted code.

Further features, possible applications, advantages and refinements of the invention result from the following description of the exemplary embodiments of the invention, which are shown in the figures. The description, the associated figures and the claims contain numerous features in combination. A person skilled in the art will also consider these features, in particular also the features of various exemplary embodiments, individually and combine them into useful further combinations. It should be noted here that the features shown are only descriptive and can also be used in combination with features of other developments described above and are not intended to restrict the invention in any way.

drawings

Fig. 1

eine Seitenansicht einer Handwerkzeugmaschine mit einer ersten Ausführungsform einer in die Aufnahmeöffnung eingesetzten ersten Schnittstelle;

Fig. 2

eine perspektivische Ansicht der Handwerkzeugmaschine aus Fig. 1 mit Explosionsansicht der eingesetzten ersten Schnittstelle;

Fig. 3

eine Detailansicht der ersten Schnittstelle aus Figur 2;

Fig. 4

eine Schnittansicht durch eine Aufnahmeöffnung entlang der Achse y aus Fig. 1 mit einer zweiten in die Aufnahmeöffnung eingesetzten Ausführungsform einer ersten Schnittstelle;

Fig. 5

eine Schnittansicht durch eine Aufnahmeöffnung entlang der Linie A-A aus Fig. 1 mit der ersten in die Aufnahmeöffnung eingesetzten Ausführungsform einer ersten Schnittstelle;

Fig. 6

eine Schnittansicht durch eine Aufnahmeöffnung entlang der Linie A-A aus Fig. 1 mit einer dritten in die Aufnahmeöffnung eingesetzten Ausführungsform einer ersten Schnittstelle;

Fig. 7

eine perspektivische Ansicht einer Kontaktplatine einer ersten Schnittstelle;

Fig. 8

eine perspektivische Ansicht eines Systems mit einer Handwerkzeugmaschine, elektrotechnischen Erzeugnissen und einer ersten Schnittstelle.

The invention is explained in more detail below on the basis of preferred exemplary embodiments. The drawings are schematic and show:

Fig. 1

a side view of a hand tool with a first embodiment of a first interface inserted into the receiving opening;

Fig. 2

a perspective view of the hand machine tool Fig. 1 with an exploded view of the first interface used;

Fig. 3

a detailed view of the first interface Figure 2 ;

Fig. 4

a sectional view through a receiving opening along the axis y from Fig. 1 with a second embodiment of a first interface inserted into the receiving opening;

Fig. 5

a sectional view through a receiving opening along the line AA Fig. 1 with the first embodiment of a first interface inserted into the receiving opening;

Fig. 6

a sectional view through a receiving opening along the line AA Fig. 1 with a third embodiment of a first interface inserted into the receiving opening;

Fig. 7

a perspective view of a contact board of a first interface;

Fig. 8

a perspective view of a system with a hand machine tool, electrical engineering products and a first interface.

The Figure 1 shows an electrical device designed as a handheld power tool 300, which is designed, for example, as a cordless drill. Accordingly, the handheld power tool 300 is mechanically and electrically connected to a battery pack 100 for the mains-independent power supply in the illustrated embodiment. It is pointed out, however, that the present invention is not limited to cordless drills, but rather can be used with different handheld power tools 300 that are operated with a battery pack 100. Handheld power tool 300 has a gear 330, not shown, arranged in a housing 305 for transmitting a torque generated by a drive motor 335, also not shown, to a drive shaft rotating about an axis of rotation x, to which a tool holder 320 is attached, and a handle 315. The handheld power tool 300 has a control unit 370 within the housing 305, which is in electronic and / or mechanical contact with the drive motor 335 and / or the transmission 330. The handle 315 serves as a support surface for a hand of an operator of the handheld power tool 300 and generally has a longitudinal axis y, a front side 317 that points along an axis x in the direction of the tool holder 320, a rear side 316, and two side surfaces 318. The in Figure 1 The battery pack 100 shown is designed as a sliding battery pack. When attaching the battery pack 100 to the hand tool 300 provided on the hand tool 300 receiving means, for. B. guide grooves and guide ribs, engaged with corresponding guide elements 110 of the battery pack 100, the battery pack 100 is inserted in a sliding direction along the receiving means of the handle 315, and wherein the battery pack 100 along a lower, substantially perpendicular to the longitudinal direction y of Handle 315 aligned outer surface of the handle 315 is pushed into the battery pack holder of a handheld power tool 300. In the in the Figure 1 In the position shown, the battery pack 100 is fastened to the handle 315 of the handheld power tool 300 and locked by locking means. The locking means include, inter alia, a locking element and an actuating element 220. By actuating the actuating means 220, the battery pack 100 can be released from the handle 315 of the handheld power tool 300.

The handle 315 also has a receiving opening 307 for receiving a first interface 380. The first interface 380 is designed to receive information and to send it to a control unit 370 arranged within the housing 305 and / or to a second external second interface, not shown. The receiving opening 307 is arranged in an area below an operating element 310 for switching on and off or for controlling the drive motor 335 on one of the two side surfaces 318. In this way, the operation of the handheld power tool 300 is not disturbed by the arrangement of the receiving opening 307. The receiving opening 307 is pot-shaped in the embodiment shown. Alternatively, the receiving opening 307 can also have other embodiments, for example a box-shaped one.

The cup-shaped receiving opening 307 shown has a circumferential side wall 385 and a bottom surface 381. This has the particular advantage that the almost circular receiving opening 307 additionally stiffens the housing 305 of the handheld power tool 300, which is basically weakened by the receiving opening 307. The receiving opening 307 can be closed by means of a cover 308. The cover 308 is curved so that it follows a contour of the housing 350 and is flush with it. Correspondingly, the cover 308 can be made from different plastic materials such as PA6 (Gebamid B), PA6.6 (Gebamid A), PC (polycarbonate), ABS (acrylonitrile-butadiene-styrene copolymer), or from a material mix of different plastics, and / or glass fiber reinforced, it is advantageous if the cover 308 has the same material as the housing 305 and the handle 315 of the handheld power tool 300.

In order to enable secure but easy access to the receiving opening 307 and the first interface 380 arranged therein, the cover 308 a slot-shaped depression 309. Through the slot-shaped recess 309, the cover 308 can be opened, for example, by means of a coin or a screwdriver. The lid 308 is in the in the Figures 2 and 3 Embodiments shown rotatably locked, especially via a bayonet lock. As in the Figures 8 9 and 9, the cover 308 can also be locked on the housing 305 by means of at least one connecting element 306, in particular by means of at least one screw. Another embodiment, not shown, is a hinged lid which is pivotably mounted about a pivot axis and which can be releasably locked on the housing 305 on the side opposite the pivot axis by latching, screwing, jamming or clamping. Such a cover 308 can prevent the cover 308 from falling off or losing it.

In Figure 2 10 is a perspective view of the handheld power tool 300 from Figure 1 is shown, in particular a first interface 380 detachably inserted into the receiving opening 307 is shown in an exploded view. In the embodiment variant shown, the first interface 380 essentially has a damping element 388, a second energy store 384, a radio module 382, a contact board 386 and, in the embodiment shown, also the cover 308.

The receiving opening 307 can, as in Figure 3 and 5 shown, form an interface housing 389 in one piece with the housing 305. Alternatively, interface housing 389, as in FIG Figure 4 and 6 shown, formed in two parts and releasably inserted together with the cover 308 as a module in the receiving opening 307 of the hand tool. The interface housing 389 can be fastened in the housing 305 of the hand power tool or alternatively also inserted into the receiving opening 307 and can only be held in the receiving opening 307 with the aid of the cover 308. The first interface 380 is largely free of play, for example by means of a click connection, arranged in the receiving opening 307, as a result of which rattling noises or the like can be avoided and inadvertent loosening of the first interface 380 can be prevented.

The interface housing 389 also has a bottom surface 381 with at least one opening 390 for the passage of connecting elements 387, for example at least one electrical line or a plug contact, in the direction of other electrical components, such as for example the Control electronics 370 and / or the battery pack electronics 800. In principle, but not shown, such an opening 390 can alternatively or additionally also be formed in the region of the side wall 385.

The first interface 380 and in particular the radio module 382 can be supplied with energy by means of a detachable connection of the first interface 380 to the power supply and / or the first energy store of the hand tool 300 (not shown). Alternatively and as shown in the figures, the first interface 380 has a second energy store 384, which, in the embodiment shown, is designed as a button battery and is parallel within the interface housing 389 directly on the radio module 382 and between the cover 308 and the radio module 382 in its main extension plane is arranged to the longitudinal axis y of the handheld power tool 300.

To lock the second energy store 384, the first interface 380 has at least one elastic element, the elastic element being arranged, for example, in the form of a spring element between the cover 308 and the second energy store 384 and / or between a bottom surface 381 of the interface housing 289 and the contact board 386 can be in order to press the second energy store 384 with the cover 308 closed against the contact connections provided within the first interface 380, as a result of which reliable electrical contacting can be ensured.

The second energy store 384 is exchangeable, this being made possible by opening the cover 308. By closing the cover 308, the second energy store 384 is securely stored within the receiving opening 307. An exchange of the entire first interface 380 together with radio module 382 is bypassed in this way and safe operation of the first interface 380 is ensured in a simple manner for a long time.

Alternatively, the second energy store 384 can also be designed to be rechargeable, the second energy store 384 being electrically connected or connectable to an energy source, for example the battery pack 100 or the power supply connection of the hand power tool 300, in order to ensure that the second energy store 384 is charged. Depending on the energy supply of handheld power tool 300, second energy store 384 of first interface 380 is charged and / or Energy supply of the first interface 380 is made possible directly via the energy supply of the hand power tool 300. In this way, permanent operation of the first interface 380 can be ensured in a simple manner.

In Figure 3 is the first interface 380 out Figure 2 presented in detail and from a different perspective. The radio module 382 is designed to receive and / or transmit a radio signal, for example a Bluetooth signal, a WLAN signal, an acoustic signal. Correspondingly, the radio module 382 contacts the control unit 370, the battery pack electronics 800, and / or various measuring devices for measuring tool variables via a wireless or wired connection. Such tool variables are, for example, the motor speed of the drive motor, a torque, a direction of rotation, etc. Advantageously, an active radio module 382 sends out a signal every ten seconds. Alternatively, the signal can also be transmitted at shorter intervals, for example every four seconds, or at longer intervals, for example every 20 or 30 seconds.

Furthermore, the contact board 386 has electrical units, connection elements 383, such as a SIM card contact and / or a connector 387, for the data exchange with the radio module 382 and / or with the control unit 370 of the handheld power tool 300 and / or the battery pack electronics 800 of the battery pack 100 to ensure. In an alternative embodiment (not shown), the first interface 380 does not have its own contact board 386, in which case the radio module 382 and / or the second energy store 384 are directly electrically connected wirelessly or by wire to a tool-side contact element.

The damping element 388 can be a viscoelastic element which is advantageously ring-shaped, for example in the form of an O-ring or web, and is elastically deformable. The damping element 388 can be formed in one piece with the interface housing 389, with the receiving opening 307, with the cover 308 and / or with the contact board 386, or as a separate component. In the in the Figures 2 to 5 In the embodiment variant shown, the damping element 388 is arranged between the cover 308 and the radio module 382 or the second energy store 384. As in Figure 6 and in detail in Figure 7 illustrated, the damping element 388 can also between the contact board 386 and a bottom surface 381 of the Interface housing 389 may be arranged. The damping element 388 ensures that the first interface 380 within the receiving opening 307 and / or within the interface housing 389 is reliably protected against external influences.

In Figure 5 is a sectional view through the receiving opening 307 along the line AA from Fig. 1 shown, wherein the interface housing 389 is integrally formed with the housing 305. The receiving opening 307 is pot-shaped and has the side wall 385 and a bottom surface 381. The first interface 380 is in the receiving opening 307 Figure 3 introduced, the first interface 380 having the cover 308, the damping element 388, the second energy store 384, and the radio module 382 and the contact board 386. Furthermore, one of the plug connectors 387 protrudes through the opening 390 in the bottom surface 381 in order to make contact with a contact element (not shown) of the handheld power tool 300. The receiving opening 307 and the first interface 380 are covered by the detachable cover 308. The cover 308 is curved in such a way that it follows the contour of the housing wall and is flush with it. The damping element 388 is in the in Figure 5 shown embodiment between the cover 308 and the second energy storage 384 arranged.

In contrast to that in Figure 5 illustrated second embodiment has the in Figure 6 Third variant shown is a sectional view through the receiving opening 307 along the line AA Fig. 1 , whereby the interface housing 389 is formed in two parts and is detachably inserted together with the cover 308 as a module in the cup-shaped receiving opening 307 of the handheld power tool 300. The damping element 388 is in the in Figure 6 shown embodiment between the bottom surface 381 and the contact board 386.

In Figure 7 The contact board 386 is shown together with the damping element 388 in a perspective view. The damping element 388 is designed in one piece and in a ring and is applied directly to a first side of the contact board 386. A connecting element 383 is arranged on a second side of the contact board 386.

In Fig. 8 is a system consisting of a hand-held power tool 300, a first interface 380 and an electrotechnical product 100 in the form of a hand-held lighting device 100a, a charger 100b, and a construction site radio 100c and a measuring device 100d. Handheld power tool 300 and the electrotechnical products each have a cover 308, which covers a receiving opening 307 of the respective housing. The receiving opening 307 is provided for receiving the first interface 380, which is exemplary according to the embodiment Fig. 3 is formed with a damping element 388, a radio module 382, a contact board 386 and connecting elements 387. This embodiment is only described by way of example; an alternative embodiment of the first interface 380 already described in connection with the handheld power tool 300 is also conceivable. By removing the cover 308, the receiving opening 307 of the hand-held power tool 300 or one of the electrotechnical products 100a, 100b, 100c, 100d is exposed in such a way that the first interface 380 can be arranged in it and closed again via the cover 308. The first interface 380 can advantageously be accommodated by an interface housing 389, which is essentially identical in the hand-held power tool 300 and the electrical engineering products 100a, 100b, 100c, 100d. A single first interface 380 can advantageously be arranged in each handheld power tool 300 or electrotechnical product 100a, 100b, 100c, 100d of the system. In this context, essentially identical should be understood to mean that the first interface 380 in each handheld power tool 300 of the system and in each electrotechnical product 100a, 100b, 100c, 100d can be included in such a way that at least one electrical connection, in particular via electrical lines, can be produced between the first interface 380 and the handheld power tool 300 and / or one of the electrotechnical products 100a, 100b, 100c, 100d. The interface 380 is designed to receive information and to send it to a control unit 370 arranged within the housing 305 and / or to a second external interface, not shown. If the first interface 380 is in the inserted state in the receiving opening 307 of the handheld power tool 300 or in the receiving opening 307 of one of the electrotechnical products 100a, 100b, 100c, 100d, system variables, commands, data or parameters of the system can, for example, be transmitted via the radio module 382 of the first Interface 380 can be transmitted and / or received to an external unit 900 with a second interface 980. The range of functions of the handheld power tool 300 or the electrotechnical product 100a, 100b, 100c, 100d is thereby advantageously expanded. For example, it is conceivable that in the inserted state of the first interface 380 in the handheld power tool 300 or the electrotechnical product 100a, 100b, 100c, 100d the operating state of the hand machine tool 300 or the electrotechnical product 100a, 100b, 100c, 100d can be activated or deactivated via the second interface 980.

Also shown is a tool case 100e, consisting of a housing with a case base and a case lid, which enclose a tool receiving area. The tool case has, for example, a receptacle opening 307 with a cover 308 on the outer surface of its case cover and can thus also be expanded with additional functions provided by the first interface 380.

In addition to the described and illustrated embodiments, further embodiments are conceivable, which can include further modifications and combinations of features.

Claims (18)

1. System composed of at least one hand-held power tool (300), comprising a housing (305), having a handle (315), a drive motor (335) arranged in the housing (305), wherein the drive motor (335) is coupled to a tool receiver, and at least one first interface (380), wherein the first interface (380) is designed to receive information from at least one second, external interface (980) and/or to send information to at least one second, external interface (980), and at least one electrotechnical product (100a, 100b, 100c, 100d), in particular without a drive motor, comprising a housing (120), characterized in that the housing (305) of the hand-held power tool (300) and the housing (120) of the electrotechnical product (100a, 100b, 100c, 100d) each have a receiving opening (307), and the receiving openings (307) can be releasably closed by a cover (308); and wherein the cover (308) closes the housing (305) outwardly, and the first interface (380) can be removably arranged in the receiving openings (307).
2. System according to Claim 1, characterized in that an interface housing (389), for receiving the first interface (380), is arranged in the receiving opening (307) of the hand-held power tool (300) and/or of the electrotechnical product (100a, 100b, 100c, 100d).
3. System according to Claim 2, characterized in that at least one opening, for the through passage of connection elements (387) is arranged in the interface housing (389), which opening is realized to establish an electrical connection between the first interface (380) and electrical components hand-held power tool (300) or of the electrotechnical product (100a, 100b, 100c, 100d).
4. System according to Claim 2 or 3, characterized in that the interface housing (389) is realized so as to constitute a single piece with the housing (305) of the hand-held power tool (300) and/or of the electrotechnical product (100a, 100b, 100c, 100d).
5. System according to any one of Claims 2 to 4, characterized in that the interface housing (389) is realized so as to constitute two pieces with the housing (305) of the hand-held power tool (300) and/or of the electrotechnical product (100a, 100b, 100c, 100d).
6. System according to any one of Claims 2 to 4, characterized in that the interface housing (389), together with the first interface (380) and the cover (308), forms a module that can be releasably attached in the region of the receiving opening (307).
7. System according to any one of Claims 1 to 6, characterized in that the cover (308) has a slot-type depression (309).
8. System according to any one of Claims 1 to 7, characterized in that the cover (308) is locked on the housing (305) in a rotatory manner, in particular via a screwed, hinged or bayonet closure (304), or by means of at least one connection means (306), in particular by means of at least one screw.
9. System according to any one of Claims 1 to 8, characterized in that the first interface (380) has a radio module (382).
10. System according to any one of Claims 1 to 9, characterized in that the first interface (380) has a second energy storage device (384) and/or is supplied with energy via a first energy storage device of the hand-held power tool (300) or of the electrotechnical product (100a, 100b, 100c, 100d).
11. System according to Claim 10, characterized in that the second energy storage device (384) is replaceable and/or rechargeable.
12. System according to any one of Claims 1 to 11, characterized in that the first interface (380) has at least one contact printed circuit board (386).
13. System according to any one of Claims 1 to 12, characterized in that the first interface (380) is connected in a wired manner or wirelessly to a control unit (370) and/or to battery-pack electronics (800) of a battery pack (100) for the purpose of data exchange.
14. System according to any one of Claims 1 to 13, characterized in that the first interface (380) has at least one damping element (388), in particular a viscoelastic element.
15. System according to any one of Claims 1 to 14, characterized in that the damping element (388) is arranged between the cover (308) and the radio module (382) and/or between the interface (380) and a base surface (381) of the interface housing (389).
16. System according to any one of Claims 1 to 15, characterized in that the interface (380) receives and/or sends a radio signal, a Bluetooth signal, in particular Bluetooth low energy signal, a WLAN signal, an optical signal or an acoustic signal.
17. Tool system having a system according to any one of Claims 1 to 16 and having an external unit (900), characterized in that the external unit (900) comprises the second interface (980), which is designed to receive information from the first interface (380) and/or to send information to the first interface (380).
18. Tool system according to Claim 17, characterized in that the external unit (900) is a smartphone or an electronic data processing system.

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